CN113754504B

CN113754504B - Production method for glue-ejecting agent

Info

Publication number: CN113754504B
Application number: CN202111157349.2A
Authority: CN
Inventors: 赵宏; 刘波; 李西勤; 赵震玮
Original assignee: National University of Defense Technology
Current assignee: National University of Defense Technology
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-08-09
Anticipated expiration: 2041-09-30
Also published as: CN113754504A

Abstract

The invention relates to a production method for an elastic glue agent, which comprises the following steps: s1, mixing and stirring a reducing agent, an oxidizing agent and an adhesive according to a preset proportion, and spraying liquid into a mixed material containing the reducing agent, the oxidizing agent and the adhesive in the mixing and stirring process; wherein the reducing agent, the oxidizing agent, and the binder are all solid powders; s2, screening and mixing the mixed materials; s3, carrying out extrusion forming on the mixed material subjected to screening and mixing treatment to obtain a primary forming material; s4, screening the primary molding material; s5, polishing the primary molding material after the screening treatment to obtain a secondary molding material; s6, dehumidifying and drying the secondary molding material; s7, coating the secondary molding material subjected to dehumidification and drying treatment to obtain a tertiary molding material; and S8, dehumidifying and drying the three-time molding material to obtain a finished product. The invention has high production safety.

Description

Production method for glue-ejecting agent

Technical Field

The invention relates to a production method for an elastic glue agent.

Background

The explosives and powders belong to flammable and explosive dangerous goods, so that significant production risks exist in the traditional production, and particularly, more and more automatic equipment are introduced to replace manpower along with the requirement of large-scale production at the present stage, and although the production efficiency of the automatic equipment is high, more dust is generated in the production process, and the dust is very dangerous for the automatic equipment. Specifically, in the production process, because the power source generally adopts electric equipment, and the electric equipment has the conditions of electric leakage, electric sparks and the like after long-time operation, serious production accidents are easily caused under the condition of lacking of protection. In addition, since there are cases where friction, volatilization, etc. are not scheduled during transportation/storage of explosives and powders, it is also one of the reasons that safety accidents are very likely to occur. Thus. At present, 4 improved requirements are provided for explosives and powders in the world, 1, the production process is safe, 2, the transportation process is safe, 3, the storage process is safe, 4, and the use process is safe. There is no solution to achieve the above requirements.

Disclosure of Invention

The invention aims to provide a production method for an elastic glue agent.

In order to achieve the above object, the present invention provides a method for producing an elastic rubber compound, comprising:

s1, mixing and stirring a reducing agent, an oxidizing agent and an adhesive according to a preset proportion, and spraying liquid into a mixed material containing the reducing agent, the oxidizing agent and the adhesive in the mixing and stirring process; wherein the reducing agent, the oxidizing agent, and the binder are all solid powders;

s2, screening and mixing the mixed material;

s3, carrying out extrusion forming on the mixed material subjected to screening and mixing treatment to obtain a primary forming material;

s4, screening the primary molding material;

s5, polishing the primary molding material after the screening treatment to obtain a secondary molding material;

s6, dehumidifying and drying the secondary molding material;

s7, coating the secondary molding material subjected to dehumidification and drying treatment to obtain a tertiary molding material;

and S8, dehumidifying and drying the three-time molding material to obtain a finished product.

According to an aspect of the present invention, in the step S1, in the step of spraying a liquid into the mixture including the reducing agent, the oxidizing agent, and the binder during the mixing, the liquid is at least one of an aqueous inorganic solution, an aqueous organic solution, and water.

According to an aspect of the present invention, in the step of spraying a liquid into the mixture including the reducing agent, the oxidizing agent and the binder during the mixing and stirring, the amount of the liquid sprayed into the mixture is less than 40% by mass of the mixture in step S1.

According to an aspect of the present invention, in step S1, the mixture is formed as a loose powder after the mixing and stirring are completed.

According to an aspect of the present invention, in the step of screening and mixing the mixture in step S2, a drum screening machine is used to perform the screening and mixing process.

The drum screening machine is coaxially provided with a plurality of drum mesh screens.

According to an aspect of the present invention, in the step of screening the primary molded material in step S4, the screened defective primary molded material is returned to step S3 to be re-extruded.

According to an aspect of the present invention, in the step of coating the secondary molding material after the dehumidifying and drying process to obtain the tertiary molding material in step S7, the secondary molding material after the dehumidifying and drying process is sent to a coating drum machine, and a moisture-proof agent is sprayed to the secondary molding material.

According to one aspect of the present invention, in step S7, the moisture-proof agent is added in an amount of 10% or less by mass based on the mass of the over-molded material.

According to one aspect of the invention, the inorganic solution is: a salt solution or an alkaline solution;

the aqueous organic solution is alcohol.

According to an aspect of the invention, further comprising:

and S9, sealing and packaging the obtained finished product, and outputting the finished product after automatic stacking.

According to the scheme of the invention, the wet mixing of the raw materials is realized by spraying the liquid in the raw material mixing process, the generation of dust is effectively reduced, the safety of the material mixing process is greatly improved, and the production safety of the invention is further effectively improved.

According to the scheme of the invention, the explosion-proof walls which are continuous in the annular shape are arranged to surround and arrange the units, so that the production safety of the explosion-proof wall is greatly improved, and the units are integrated in one continuous explosion-proof wall, so that the occupied field of a production line is effectively reduced, and the utilization efficiency of space is effectively improved.

According to the scheme of the invention, the power source of each unit is arranged on the outer side of the explosion-proof wall, so that safety accidents caused by the fact that the power source is easy to generate heat, generate electric sparks and the like in the long-time operation process are effectively avoided, and the scheme is beneficial to effectively improving the production safety.

According to the scheme of the invention, the automatic production from the feeding to the finished product packaging process is realized by adopting the automatic production line, the manual participation is effectively reduced, and further, under the condition of ensuring the production efficiency, the manpower is saved and the safety risk of the production process is effectively reduced. In addition, through the automatic operation mode, each production link is effectively concentrated to a smaller area to be realized, the space required by gunpowder production is effectively reduced, the production cost is greatly saved, and the waste of land resources is avoided.

According to one scheme of the invention, the explosion-proof wall is of a multilayer structure with the vacuum cavity, so that the negative pressure explosion-proof effect is realized while the multilayer physical explosion-proof effect is realized, and the explosion-proof and earthquake-proof effects of the invention are effectively improved. Specifically, under the condition of having the vacuum cavity, when the impacted surface is broken, under the negative pressure action of the vacuum environment, the impact is further reduced, the impact is effectively weakened, the other side surface of the explosion-proof wall has the capacity of fully resisting the impact, the effect that the other side surface is broken by the impact can be effectively avoided, and the production safety of the explosion-proof wall is greatly improved. In addition, the explosion-proof wall is simple in structure, the number of layers of the side surface layer can be increased and/or the interval between the side surface layers can be adjusted according to requirements, and the explosion-proof wall can be applied to different production requirements, so that the application range and the use flexibility of the explosion-proof wall are effectively improved.

According to one scheme of the invention, the wet preparation of the materials is realized in the production process, so that the safety of the production process is effectively improved. Meanwhile, a coating layer is formed by coating the outer surface of the material, so that the impact sensitivity and the friction sensitivity between the materials are reduced to a certain range under the condition of a moisture-proof effect, and the high safety is realized in the processes of transportation, storage and use.

Drawings

FIG. 1 is a block diagram schematically illustrating the steps of a production process according to one embodiment of the present invention;

FIG. 2 is a block diagram schematically illustrating the construction of an automated manufacturing line according to one embodiment of the present invention;

fig. 3 is a view schematically showing the construction of an explosion proof wall according to an embodiment of the present invention;

FIG. 4 is a block diagram schematically illustrating a dosing unit according to an embodiment of the present invention;

FIG. 5 is a block diagram schematically illustrating a compounding unit according to an embodiment of the present invention;

FIG. 6 is a top view schematically illustrating a mixing unit according to an embodiment of the present invention;

FIG. 7 is a block diagram schematically illustrating a mixing roller according to an embodiment of the present invention;

FIG. 8 is a block diagram schematically illustrating a mixing roller according to another embodiment of the present invention;

fig. 9 is a structural view schematically showing a counter roller pressing unit according to an embodiment of the present invention;

fig. 10 is a side view schematically showing a counter-roller pressing unit according to an embodiment of the present invention;

FIG. 11 is a block diagram schematically illustrating a discharge hopper according to an embodiment of the present invention;

FIG. 12 is a block diagram schematically illustrating a discharge hopper according to another embodiment of the present invention;

fig. 13 is a structural view schematically showing a first dehumidifying and drying unit according to an embodiment of the present invention;

FIG. 14 is a block diagram schematically illustrating a first material guide structure, in accordance with one embodiment of the present invention;

fig. 15 is a block diagram schematically illustrating a second dehumidifying and drying unit according to an embodiment of the present invention;

fig. 16 is a structural view schematically showing a second material guide structure according to an embodiment of the present invention.

Detailed Description

The present invention is described in detail below with reference to the drawings and the specific embodiments, which are not repeated herein, but the embodiments of the present invention are not limited to the following embodiments.

As shown in fig. 2, according to an embodiment of the present invention, a method for producing an ammunition of the present invention includes:

s1, mixing and stirring a reducing agent, an oxidizing agent and an adhesive according to a preset proportion, and spraying liquid into a mixed material containing the reducing agent, the oxidizing agent and the adhesive in the mixing and stirring process; wherein the reducing agent, the oxidizing agent and the adhesive are all solid powder;

s2, screening and mixing the mixed materials;

s4, screening the primary formed material;

s6, dehumidifying and drying the secondary molding material;

According to an embodiment of the present invention, in the step of spraying the liquid into the mixture including the reducing agent, the oxidizing agent and the binder during the mixing and stirring, the liquid is at least one of an aqueous inorganic solution, an aqueous organic solution and water in step S1. In this embodiment, the inorganic substance solution is: a salt solution (sodium chloride solution, potassium chloride solution) or an alkaline solution (calcium hydroxide solution); the aqueous organic solution may be an alcohol (the concentration of alcohol may be adjusted as desired to within a reasonable safety range).

Through the arrangement, the liquid is sprayed in the raw material mixing process, so that the wet mixing of the raw materials is realized, the generation of dust is effectively reduced, the safety of the material mixing process is greatly improved, and the production safety of the invention is further effectively improved.

According to one embodiment of the present invention, in the step of spraying the liquid into the mixture including the reducing agent, the oxidizing agent and the binder during the mixing and stirring, the amount of the liquid sprayed into the mixture is less than 40% by mass of the mixture in step S1. In this embodiment, the mixture formed after the mixing and stirring is a loose powder, i.e., the mixture is changed from a dry material to a mixture with more water, and the mixture is loose and does not cake.

According to an embodiment of the present invention, in the step of screening and mixing the mixed material in step S2, a drum screening machine is used to perform the screening and mixing process. In the present embodiment, a plurality of drum screens are provided coaxially with the drum screen machine. The loose mixed materials are further screened by the drum screening machine, so that the materials can be further scattered and distributed, and the materials are more uniformly mixed.

It should be noted that the adhesive used in the present invention needs to show stronger viscosity with time, i.e. stronger viscosity with a longer time, so that there is no or weak viscosity from step S1 to step S2, so that the material will not agglomerate in the mixing stage, which is beneficial to ensure the uniformity of the material, and the viscosity will gradually become stronger with time during the forming process after the completion of mixing, preferably showing stronger viscosity after the preparation of the dehumidified and dried secondary formed material, tertiary formed material or finished product.

According to one embodiment of the present invention, in the step of screening the primary molded material in step S4, the screened defective primary molded material is returned to step S3 to be re-extruded.

According to an embodiment of the present invention, in the step of coating the secondary molding material after the dehumidifying and drying process to obtain the tertiary molding material in step S7, the secondary molding material after the dehumidifying and drying process is transferred to a coating drum machine, and a moisture-proof agent is sprayed to the secondary molding material. In the present embodiment, the moisture-proofing agent is added in an amount of 10% by mass or less of the secondary molding material.

Through spraying the dampproof agent at the post forming material surface, can effectively realize the dampproofing effect of material, and set up the volume of spraying of dampproof agent in above-mentioned within range, effectively guaranteed under the effect of dampproofing effect, can make the material surface have certain elasticity, make the friction and collision between material and the material weaken, the security of material has been improved, still can not make the dampproof agent exert an influence to the effect of material simultaneously, the use validity of material has been guaranteed promptly, the security of material transportation process has still been guaranteed.

According to an embodiment of the present invention, further comprising:

To further illustrate the present invention, further details are provided in connection with an automated production line for the inventive elasto-pharmaceutical composition.

As shown in fig. 2, according to an embodiment of the present invention, an automatic production line for ammunition of the present invention includes: the device comprises a batching unit 1 for storing and distributing raw materials in proportion, a mixing unit 2 for receiving and mixing the raw materials output by the batching unit 1, a first screening unit 3 for screening the mixed materials output by the mixing unit 2, a double-roller extruding unit 4 for extruding and forming the mixed materials output by the first screening unit 3, a second screening unit 5 for screening the formed materials output by the double-roller extruding unit 4, at least one polishing unit 6 for polishing the surface of the formed materials output by the second screening unit 5, at least one first dehumidifying and drying unit 7 for dehumidifying and drying the formed materials polished by the polishing unit 6, at least one spraying unit 8 for spraying a blocking agent on the formed materials dehumidified and dried by the first dehumidifying and drying unit 7, at least one second dehumidifying and drying unit 9 for dehumidifying and drying the formed materials output by the spraying unit 8, a packaging unit 10 for packaging the formed material output by the second dehumidifying and drying unit 9, and an explosion-proof wall 1 a.

In the present embodiment, the explosion-proof wall 1a is arranged in an annular continuous manner and is sealed around the automatic production line, so that the batching unit 1, the mixing unit 2, the first screening unit 3, the roller extrusion unit 4, the second screening unit 5, the polishing unit 6, the first dehumidifying and drying unit 7, the spraying unit 8, the second dehumidifying and drying unit 9 and the packaging unit 10 can be enclosed inside the explosion-proof wall 1 a.

In the present embodiment, a plurality of openable and closable relief ducts are provided at intervals in the blast wall 1a to perform functions such as equipment inspection and maintenance.

According to the invention, the automatic production from the feeding to the finished product packaging process is realized by adopting the automatic production line, the manual participation is effectively reduced, and further, the labor is saved and the safety risk in the production process is effectively reduced under the condition of ensuring the production efficiency. In addition, through the automatic operation mode, each production link is effectively concentrated to a smaller area to be realized, the space required by gunpowder production is effectively reduced, the production cost is greatly saved, and the waste of land resources is avoided.

According to the invention, the production safety of the invention is greatly improved by arranging the annular continuous explosion-proof wall 1a to surround each unit, and the mode of integrating each unit in one continuous explosion-proof wall effectively reduces the occupied field of a production line and effectively improves the utilization efficiency of space.

As shown in fig. 2, according to an embodiment of the present invention, the dispensing unit 1, the mixing unit 2, the first sieving unit 3, the pair-roller extruding unit 4, the second sieving unit 5, the polishing unit 6, the first dehumidifying and drying unit 7, the spraying unit 8, the second dehumidifying and drying unit 9, and the packing unit 10 are all located outside the blast wall 1 a.

Through the setting, the power supply setting of each unit is in the outside of blast wall 1a, has effectively avoided the power supply to generate heat easily, the incident that arouses under the circumstances such as production electric spark, and then is beneficial to the production security that effectively improves this scheme at long-time operation in-process.

As shown in fig. 3, according to one embodiment of the present invention, the explosion-proof wall 1a has a multi-layered structure. In the present embodiment, the blast wall 1a includes: a first side layer 1a1, a second side layer 1a 2. In the present embodiment, the first side sheet 1a1 and the second side sheet 1a2 are provided at a distance from each other. In this embodiment, the thicknesses of the first side layer 1a1 and the second side layer 1a2 are smaller than the distance between the first side layer 1a1 and the second side layer 1a 2. Therefore, a certain safety distance is formed between the first side surface layer 1a1 and the second side surface layer 1a2, and the second side surface layer 1a2 can further play a role in protection under the condition that the first side surface layer 1a1 is damaged by impact, so that the safety of the whole explosion-proof wall 1a is guaranteed.

In the present embodiment, the first side surface layer 1a1 and the second side surface layer 1a2 are made of tempered explosion-proof glass. In this embodiment, toughened explosion-proof glass also adopts multilayer structure to make, still is provided with the glue film between its adjacent two-layer glass layer promptly to guarantee toughened explosion-proof glass's whole barrier propterty. In the embodiment, the first side surface layer 1a1 and the second side surface layer 1a2 are both made of tempered explosion-proof glass with the above-mentioned multilayer structure, so that the protection performance of the explosion-proof wall 1a of the invention is greatly improved.

As shown in fig. 3, according to an embodiment of the present invention, the blast wall 1a further includes: a top layer 1a3 and a bottom layer 1a 4. In this embodiment, the top layer 1a3 is fixedly attached to the upper ends of the first side layer 1a1 and the second side layer 1a2, respectively, and the bottom layer 1a4 is fixedly attached to the lower ends of the first side layer 1a1 and the second side layer 1a2, respectively. In this embodiment, the first side layer 1a1, the second side layer 1a2, the top layer 1a3, and the bottom layer 1a4 enclose a closed cavity 1a5, and the cavity 1a5 is evacuated to form a vacuum environment. In the present embodiment, the top layer 1a3 and the bottom layer 1a4 are made of tempered explosion-proof glass having the same structure as the first side layer 1a1 and the second side layer 1a 2.

In the present embodiment, the first side layer 1a1 and the second side layer 1a2 are disposed at intervals, and support is optionally disposed randomly or regularly, so as to support the first side layer 1a1 and the second side layer 1a2 between the first side layer 1a1 and the second side layer 1a 2. In the present embodiment, the support may be a support with certain elasticity, which is used to play a certain role in buffering when the explosion-proof wall 1a is impacted, so as to further improve the effects of explosion and shock resistance.

According to the invention, the explosion-proof wall 1a is arranged into a multilayer structure with a vacuum cavity, so that the negative pressure explosion-proof effect is realized while the multilayer physical explosion-proof effect is realized, and the explosion-proof and earthquake-proof effects of the invention are effectively improved. Specifically, under the condition of having a vacuum cavity, when the impacted surface is broken, under the negative pressure action of the vacuum environment, the impact is further reduced, the impact is effectively weakened, so that the other side surface of the explosion-proof wall 1a has the capacity of fully resisting the impact, the effect of effectively preventing the other side surface from being broken by the impact can be realized, and the production safety of the explosion-proof wall is greatly improved. In addition, the explosion-proof wall is simple in structure, the number of layers of the side surface layer can be increased and/or the interval between the side surface layers can be adjusted according to needs, so that the explosion-proof wall can be applied to different production needs, and the application range and the use flexibility of the explosion-proof wall are effectively improved.

Referring to fig. 2 and 4, according to an embodiment of the present invention, the dispensing unit 1 includes: a plurality of batching boxes 11, a batching control mechanism 12 for controlling the batching boxes 11 to output materials quantitatively, a batching power source 13 for driving the batching control mechanism 12 to act, and a batching transmission device 14. In this embodiment, the setting that a plurality of batching boxes 11 were arranged in proper order, the setting of batching control mechanism 12 and each batching box 11 one-to-one is in the below of batching box 11, and batching transmission device 14 is located the below of batching control mechanism 12, and then can realize that the material is delivered to the material output of batching transmission device 14 on in order to realize the batching process under the quantitative control effect of batching control mechanism 12 in the batching box.

Referring to fig. 2 and 4, in the present embodiment, a plurality of batching boxes 11 are independent from each other, and each batching box 11 is used for loading raw materials for producing the ammunition (i.e. a formed gunpowder), wherein the raw materials comprise an oxidizing agent, a reducing agent and a binding agent. In this embodiment, the oxidant, the reductant, and the binder are solid powdery materials, and are loaded in different batching boxes 11 respectively, and the batching control mechanism 12 under each batching box 11 is adjusted by a preset blanking proportion, so that different materials can be continuously conveyed to the batching transmission device 14 in proportion under the driving of the batching power source 13.

In the present embodiment, the batching control mechanism 12 is implemented by a mechanical structure, and the batching power source 13 is driven to operate, so that the batching power source 13 can be arranged outside the blast wall 1a, which is further beneficial to improving the production safety of the present invention.

In this embodiment, the ingredient transferring device 14 may be a belt transferring device. In this embodiment, can be through the setting batching transmission device 14 with batching box 11 one-to-one in the below of batching box 11, also can only set up a batching transmission device 14 and receive the material that a plurality of batching boxes 11 were exported simultaneously, and its specific setting mode can set up as required, no longer gives details here.

Referring to fig. 2, 5 and 6, according to an embodiment of the present invention, the step of mixing the materials in step S1 is implemented by using a mixing unit 2, wherein the mixing unit 2 receives the materials output by the ingredient conveying device 14 to mix the materials, so as to output the mixed materials.

Referring to fig. 2, 5 and 6, according to an embodiment of the present invention, the mixing unit 2 includes: the mixer 21, compounding power supply 22, compounding speed reducer 23, water gaging bin 24. In the present embodiment, the mixer 21 and the water measuring bin 24 are located inside the blast wall 1 a; the mixing power source 22 and the mixing speed reducer 23 are located outside the blast wall 1 a. In the embodiment, the mixing speed reducer 23 is connected with the mixer 21 by a detachable mixing extension shaft 25; a mixing extension shaft 25 is provided through the blast wall 1 a. In this embodiment, the water measuring chamber 24 is used for containing a preselected and prepared solution.

Through the arrangement, the mixing speed reducer 23 is connected with the mixer 21 through the extension shaft, so that the spacing distance between the mixing speed reducer 23 and the mixer 21 can be effectively increased, the electrical isolation between the mixer 21 and the mixing power source 22 can be effectively realized, and the production safety of the mixer is improved.

In addition, the extension shaft is arranged to be detachable, so that the mounting difficulty can be effectively reduced, and the mounting efficiency is improved.

According to an embodiment of the invention, the mixing extension shaft 25 may be provided with a sliding seal at the location where it passes through the blast wall 1 a.

Through adopting and setting up sliding seal spare in compounding extension shaft 25 passes the position of blast wall 1a, can make blast wall 1a play the supporting role to compounding extension shaft 25, and then it is favourable to the stable rotation of the axis body of extension.

Referring to fig. 2, 5 and 6, according to an embodiment of the invention, the mixer 21 includes: a mixing bin 211, a mixing roller 212, a mixing transmission mechanism 213 and a mixing spray device 214. In the present embodiment, the mixing roller 212 is located in the mixing bin 211, and two opposite ends are respectively rotatably connected to the mixing bin 211; the mixing transmission mechanism 213 is connected to the mixing extension shaft 25 and the mixing roller 212, respectively. In this embodiment, the mixing power source 22 is in transmission connection with the mixing speed reducer 23, and the mixing extension shaft 25 is in transmission connection with the mixing speed reducer 23, so that the mixing transmission mechanism 213 can be driven, and the mixing roller 212 is driven to rotate to realize the mixing effect of the materials. In the present embodiment, at least one mixing roller 212 is provided. In the present embodiment, the mixing spray device 214 is fixedly supported on the mixing bin 211 and located above the mixing roller 12, and is used for spraying liquid (such as water, sodium chloride solution, calcium hydroxide solution, alcohol, etc.) during the mixing process to achieve liquid mixing of the materials. In this embodiment, the compounding spray device 214 is connected to the water sump 24.

In the present embodiment, when the mixing roller 212 is provided in plural (for example, two), it is disposed in parallel in the mixing bowl 211.

Referring to fig. 2, 5 and 6, according to an embodiment of the invention, the mixing roller 212 includes: a drum 2121 and a mixing blade 2122 provided on the drum 2121. In this embodiment, the compounding blade 2122 is at least one continuous helical blade; alternatively, the mixing blade 2122 is a plurality of independent blades regularly arranged on the drum 2121, and the mixing blade 2122 is disposed obliquely with respect to the axial direction of the drum 2121.

According to one embodiment of the invention, only one mixing roller 212 is arranged in the mixing bowl 211. The helical blade is also a continuous helical blade. In this embodiment, the helical blades are fixedly attached to the roller 2121 and positioned around the outside of the roller 2121 (as shown in FIG. 7). Of course, the number of the helical blades may be provided in plural (for example, two, three, etc.), and when the number of the helical blades is provided in plural, the helical blades are spaced apart from each other and are continuously helically provided outside the roller 2121. When there are a plurality of helical blades, the heights of the respective helical blades with respect to the roller 2121 are different.

Through the setting, the compounding effect has effectually been strengthened, and especially a plurality of helical blade set up to high difference, have further effectively eliminated the adhesion of material between helical blade to produce the axial extrusion effect of cylinder, make the compounding effect better.

According to another embodiment of the invention, only one mixing roller 212 is arranged in the mixing bowl 211. The helical blade is also a continuous helical blade. In the present embodiment, the helical blade is circumferentially disposed outside the roller 2121 with a space from the roller 2121, and is fixedly connected to the roller 2121 by a rod-shaped connecting member (see fig. 8). Of course, the number of the helical blades may be provided in plural (for example, two, three, etc.), and when the number of the helical blades is provided in plural, the helical blades are spaced apart from each other and are continuously helically provided outside the roller 2121. When the number of the helical blades is plural, the heights of the respective helical blades with respect to the roller 2121 are different.

Through the setting, the compounding effect has effectually been strengthened, and especially a plurality of helical blade set up to high difference, have further effectively eliminated the adhesion of material between helical blade to produce the axial extrusion effect of cylinder, make the compounding effect better. In addition, through this kind of unsettled setting that has the interval of helical blade can effectively avoid the material at the adhesion of helical blade root, and then is useful with the even of material to effectively guaranteeing the unanimity of each composition proportion in the misce bene.

According to another embodiment of the invention, when the mixing roll 212 is provided in plurality, the rotation directions of the adjacent mixing rolls 212 are opposite, and the inclination directions of the mixing blades 2122 on the adjacent mixing rolls 212 are symmetrical (see fig. 6).

Through the arrangement, the uniformity during material mixing is effectively guaranteed, and the material mixing effect is further effectively improved.

Referring to fig. 2, 5 and 6, according to an embodiment of the present invention, a mixing power source 22 is disposed at one side of a mixing reducer 23 in parallel with the mixing reducer 23. In the present embodiment, a belt transmission is adopted between the mixing power source 22 and the mixing speed reducer 23.

Through the arrangement, the size in the vertical direction can be effectively reduced by arranging the power sources side by side in the horizontal direction, so that the height of the whole equipment can be effectively reduced, the equipment is simpler to arrange and install, the power sources can be conveniently and remotely arranged, the influence of electric sparks generated in the power sources on the operation safety of the whole equipment is avoided, and the use safety of the invention is effectively improved.

Through the arrangement, the belt transmission mode is adopted, the structure is simple, in the operation process, the mixing power source 22 is electrically insulated from other structures due to the insulating property of the belt, and the use safety of the mixing power source is further improved.

Referring to fig. 2, 5 and 6, according to an embodiment of the present invention, the mixing unit 2 further includes: a compounding conveyor 26. In this embodiment, the material mixing and conveying device 26 is a belt conveying device, and is disposed below the outlet of the material mixing bin 211, so that the material can be directly conveyed to the first screening unit 3 by the material mixing and conveying device 26 after the material mixing is completed, so as to perform the next screening and material mixing operation.

As shown in fig. 2, according to an embodiment of the present invention, the step of sieving and mixing the mixed materials is implemented based on the first sieving unit 3 in step S2. The first sieving unit 3 comprises: a first roller screening machine 31, a first roller speed reducer 32 and a first roller power source 33. In the present embodiment, the first drum screen 31 is located inside the blast wall 1a, and the first drum reducer 32 and the first drum power source 33 are located outside the blast wall 1 a. In the present embodiment, the first drum reducer 32 and the first drum screening machine 31 are detachably connected by a first drum extension shaft 34; a first drum extension shaft 34 is provided through the blast wall 1 a.

According to one embodiment of the invention, the first drum screen 31 has a multi-layer screen drum. In this embodiment, first cylinder screening machine 31 includes that two-layer screen cylinder carries out coaxial setting, has the spaced between the adjacent two-layer screen cylinder, can make on the material of upper screen cylinder falls lower floor's screen cylinder after through like this, has guaranteed the layering whereabouts of multilayer screen cylinder material when rotating, has further realized more careful material mixing effect. In this embodiment, the mesh openings of each layer of screen drum may be the same in size, and in order to realize that the falling time of the material on the lower layer of screen drum has a certain delay with the falling time of the material on the upper layer of screen drum, the mesh openings of each layer of screen drum in two adjacent layers may be arranged in a staggered manner. Of course, the mesh openings of each layer of screen drum can be set to be different, for example, the mesh openings of the upper layer screen drum are set to be larger, and the mesh openings of the lower layer screen drum are set to be smaller, so that the blanking speed of the lower layer screen drum can be delayed to further realize finer material mixing.

It should be noted that, when the multi-layer screen drum is used, the mixing effect of the materials can be further adjusted by adjusting the dislocation position of the meshes, and the mixing effect can be set based on actual needs, which is not described in detail herein. In addition, when more layers of screen drums are required to be arranged, the screen drums can be adaptively adjusted by combining the modes of mesh size, mesh dislocation positions and the like, as long as the required effect can be achieved.

Through the arrangement, the material mixing effect is further realized by adopting the drum screening machine with the multiple layers of screen drums, the main effect of the material mixing machine is to eliminate the phenomenon of uneven material mixing generated by caking materials, so that loose powdery mixed materials output by the material mixing unit can be further uniformly distributed in the screening process in a mode of upper and lower layer screening, and a better material mixing effect is achieved. In addition, under the rolling action of the upper screen drum, the crushing and dispersion of the caked materials are facilitated, and a better mixing effect is also achieved.

As shown in fig. 2, according to one embodiment of the invention, the first screening unit 3 further comprises: and the first screening and conveying device 35 is used for conveying the screened and mixed materials out. In this embodiment, the first screening conveyor 35 is a belt conveyor.

As shown in fig. 2, according to an embodiment of the present invention, a stock bin 36 is provided between the first sieving unit 3 and the counter-roll extruding unit 4 for storing the mixed material output from the first sieving unit 3 and for controlling the amount of the mixed material fed to the counter-roll extruding unit 4. In the present embodiment, the waiting bin 36 is used for receiving the material conveyed by the first screening conveyor 35 and storing and conveying the material to the double-roll extrusion unit 4.

The material waiting bin can realize the buffer separation effect between the material mixing process and the material forming process, effectively ensures that the upstream material mixing process and the downstream granulation forming process are normally carried out simultaneously, effectively ensures the production continuity of the invention, and improves the production efficiency of the invention.

Referring to fig. 2, 9 and 10, in step S3, the step of extruding the mixed material after the sieving and mixing process to obtain the primary molded material is performed by the pair-roller extruding unit 4. In the present embodiment, the counter-roller pressing unit 4 includes: a granulator 41, a granulator speed reducer 42 connected with the granulator 41, and a granulator power source 43 connected with the granulator speed reducer 42. In the present embodiment, the pelletizer 41 is located inside the blast wall 1a, and the pelletizer decelerator 42 and the pelletizer power source 43 are located outside the blast wall 1 a. In the present embodiment, the pelletizer decelerator 42 is detachably connected to the pelletizer 41 by the pelletizer extension shaft 44, and the pelletizer extension shaft 44 is disposed through the blast wall 1 a.

In the present embodiment, the counter-roller pressing unit 4 further includes: a granulation conveying device 45 arranged below the granulator 41, and a feed conveying device 46 for conveying material to the granulator 41. In the present embodiment, the feeding and conveying device 46 is used for receiving the material from the material bin 36 and sending the material to the pelletizer 41 for extrusion pelletizing.

In the present embodiment, the pelletizer power source 43 is provided on one side of the pelletizer decelerator 42 in the horizontal direction.

Through the arrangement, the size in the vertical direction can be effectively reduced by the mode of arranging the granulator power source 43 side by side in the horizontal direction, so that the height of the whole equipment can be effectively reduced, the equipment is simpler to arrange and install, the granulator power source 43 can be conveniently arranged in a long distance, the influence of electric sparks generated by the granulator power source 43 on the operation safety of the whole equipment is avoided, and the use safety of the granulator power source 43 is effectively improved.

In the present embodiment, the pelletizer power source 43 and the pelletizer decelerator 42 are belt-conveyed.

Through the arrangement, the belt transmission mode is adopted, the structure is simple, in the operation process, the granulator power source 43 is electrically insulated from other structures due to the insulation of the belt, and the use safety of the granulator power source is further improved.

Referring to fig. 9 and 10, according to an embodiment of the present invention, the pelletizer 41 includes: a hopper 411, a prilling assembly 412 located below the hopper 411, a crushing assembly 413 located below the prilling assembly 412, and an exit hopper 414 located below the crushing assembly 413. In this embodiment, the hopper 411 is a hollow cylindrical body, and has openings at opposite ends thereof. In this embodiment, the hopper 411 has a tapered structure with a large opening at the upper end and a small opening at the lower end, and the small opening end can smoothly feed the material into the hopper 411. In this embodiment, the granulation conveying device 45 is located below the discharge hopper 414, and the material output by the discharge hopper can be directly sent to the next process by the granulation conveying device 45, so that the production efficiency is greatly improved.

Referring to fig. 9 and 10, according to one embodiment of the present invention, the pelletizing assembly 412 includes: two rollers 4121 arranged side by side. In the present embodiment, the rollers 4121 are formed in a cylindrical shape as a whole, and the material flowing down from above is fed between the two rollers 4121, and the material is pressed and integrated by the rotation of the two rollers to form a granular material.

In the present embodiment, the surface of the roller 4121 is regularly provided with the recesses 4121a, and the recesses 4121a have a regular-shaped arrangement. For example, to extrude spherical particles, each depression on the surface of each roller 4121 is in a regular hemispherical shape, so that when the two rollers rotate relatively to extrude a material, a complete spherical material can be extruded based on the depressions 4121a on the surfaces of the two rollers. When materials with different shapes need to be extruded by the roller, the corresponding shape of the concave 4121a on the surface of the roller can be changed correspondingly, and the details are not repeated.

In this embodiment, adjacent rollers 4121 are connected to the pelletizer extension shaft 44, respectively, and the rotation directions of the adjacent rollers 4121 are opposite.

Through the arrangement, the two rollers can effectively extrude the material in a pair of rollers, so that the strength and the surface quality of the formed material are improved, and the efficiency of finished products is effectively improved.

In the present embodiment, the interval between the adjacent rollers 4121 is adjustable. In this embodiment, a slidable rail may be provided on the supporting seat on which the rollers 4121 are mounted, for adjusting the horizontal position of at least one of the rollers 4121, so that the interval between adjacent rollers 4121 can be realized, and after the adjustment is completed, the position can be fixed, thereby facilitating the stable operation of the apparatus.

Referring to fig. 9 and 10, according to one embodiment of the present invention, the crushing assembly 413 comprises: two crushing rollers 413a arranged side by side and with adjustable spacing. In the present embodiment, the crushing roller 413a includes: a rotating member 4131, a lever 4132 disposed on a surface of the rotating member 4131. In the present embodiment, one end of the lever 4132 is fixed to the rotor 4131, and the other end freely extends in the radial direction of the rotor 4131. In the present embodiment, a plurality of rows of the lever bodies 4132 are provided at equal intervals in the circumferential direction of the rotor 4131, and a plurality of lever bodies 4132 are provided at equal intervals in each row; the two adjacent rows of the lever bodies 4132 are arranged to be offset from each other in the axial direction of the rotary member 4131.

In the present embodiment, the rotation directions of the two crushing rollers 413a are also opposite, and the rod body 4132 is also misaligned during the rotation of the two crushing rollers 413a to prevent interference.

In this embodiment, the rotating member 4131 is connected to the granulating assembly 412 by the transmission member 133 for the synchronous operation of the crushing assembly 413 and the granulating assembly 412.

Through the above arrangement, after the granulating component 412 is subjected to double-roller extrusion molding on materials, part of the materials can be adhered, so that the adhered materials are dispersed through the rod body 4132 in the rotating process of the crushing component 413 below, and the output materials are kept in a granular shape as far as possible. Thereby effectively ensuring the forming effect of the invention.

Through the setting, the rod body is arranged to be staggered, and the material uniform dispersion is realized.

Referring to fig. 9 and 10, according to an embodiment of the present invention, the discharge hopper 414 is a hollow cylinder with two opposite ends open, and the upper end opening of the discharge hopper 414 is larger than the lower end opening and has a conical structure. In the present embodiment, the opening size of the lower end opening of the hopper 414 is adjustable.

Through the arrangement, the control on the caliber of the discharging end of the discharging hopper 414 is effectively realized, so that the accuracy of the discharging position can be effectively ensured, and the discharging stability of the invention is further ensured.

As shown in fig. 9, 10 and 11, according to an embodiment of the present invention, the lower end opening of the discharge hopper 414 is rectangular, and at least one side of the lower end opening is movable for adjusting the size of the lower end opening. In the present embodiment, the four side walls of the discharge hopper 414 are all hard and are movably connected to each other by a connecting member, and when the size of the outlet at the lower end needs to be adjusted, the size of the opening can be adjusted by the position, length, etc. of the connecting member. Or, two opposite side walls in the discharge hopper 414 are soft, the other two side walls are hard, the four side walls are sequentially connected, the soft side walls are oppositely arranged, the hard side walls are oppositely arranged, and then an adjustable pull rod structure 414a is adopted to be connected with the hard side walls, wherein one hinged end of the pull rod is connected with one hard side wall, the other movable end is connected with the other hard side wall, and the adjustment of the opening size is realized by adjusting the position of the movable end. It should be noted that the pull rod structure 414a can also be a combination of a screw and a nut, and the size of the opening can be adjusted by the position of the nut by connecting one end of the screw to one of the rigid side walls and the other end of the screw through the other rigid side wall, see fig. 11. Of course, the pull rod structure 414a may also be configured to have other structures, so as to achieve the corresponding functions, which will not be described herein again.

Through the arrangement, the size of the opening at the lower end of the discharge hopper is adjusted by adopting the pull rod structure, the adjusting mode is convenient and flexible, the control stability is good, the adjusting accuracy is excellent, the opening at the lower end of the discharge hopper can be well matched with the conveying unit, and the use flexibility of the invention is improved.

As shown in fig. 12, according to another embodiment of the present invention, the lower end opening of the hopper 414 is circular or elliptical, the sidewall of the hopper 414 is soft, and a strap 414b for adjusting the size of the lower end opening is provided on the sidewall of the hopper 414. In this embodiment, the size of the lower end opening can be easily adjusted by adjusting the position of the hook on the strap 414 b. In this embodiment, the position of the lower end of the strap 414b may be adjusted as needed to meet the requirements. In this embodiment, the shape of the lower end opening may be set to other shapes, which is not described herein.

Through the arrangement, the discharge hopper with the soft round opening is simpler in structure, convenient to install and use and easy to replace. In addition, the mode of adjusting the size of the opening through the binding band is convenient and flexible. In addition, through the whole soft play hopper, still can not produce the rigidity contact with the material of whereabouts, the effectual broken granule that has reduced is useful to the finished product yield of guaranteeing the material.

As shown in fig. 2, the step of screening the primary molded material in step S4 is implemented by the second screening unit 5. In this embodiment, the second sieving unit 5 comprises: a second drum screening machine 51, a second drum speed reducer 52 and a second drum power source 53. In the present embodiment, the second drum screen 51 is located inside the blast wall 1a, and the second drum reducer 52 and the second drum power source 53 are located outside the blast wall 1 a. In the present embodiment, the second drum reducer 52 and the second drum screening machine 51 are detachably connected by a second drum extension shaft 54; a second drum extension shaft 54 is provided through the blast wall 1 a.

As shown in fig. 2, according to one embodiment of the present invention, a second drum sizer 51 is used to receive the molding material conveyed by the granulation conveying device 45 of the double-roll extrusion unit 4. In this embodiment, the second drum sifter 51 has at least one layer of screen drum, the mesh openings of which are adapted to the diameter of the particles to be obtained, in order to sift out the larger particles of molding material to obtain molding material of an acceptable size.

As shown in fig. 2, according to one embodiment of the invention, the second screening unit 5 further comprises: a second screening conveyor 55. The material screened by the second drum screener 51 is delivered via a second screening conveyor 55.

As shown in fig. 2, according to one embodiment of the invention, the second screening unit 5 further comprises: a third screening conveyor 56. The unqualified materials screened by the second roller screening machine 51 are sent back to the material waiting bin 36 through the third screening conveying device 56 to be sent to the roller extrusion unit 4 again for re-granulation, so that the materials are recycled.

As shown in fig. 2, according to an embodiment of the present invention, a metering bin 57 is provided between the second sieving unit 5 and the polishing unit 6 for storing the molding material output from the second sieving unit 5 and for controlling the amount of the molding material delivered to the polishing unit 6. In this embodiment, the accept material from the second screen conveyor 55 is sent to the dosing bin 57. The redistribution of the molding materials is realized through the metering bin, and the continuous polishing of the subsequent polishing units 6 can be ensured.

The metering bin can realize the buffer separation effect between the extrusion granulation process of the materials and the polishing process of the materials, effectively ensures that the upstream granulation process and the downstream granulation process are normally carried out simultaneously, effectively ensures the production continuity of the invention, and improves the production efficiency of the invention.

As shown in fig. 2, in step S5, the step of polishing the primary molded material after the sieving process to obtain the secondary molded material is implemented by the polishing unit 6. In the present embodiment, the polishing unit 6 includes: a polisher 61, a polisher reducer 62 connected to the polisher 61, and a polisher power source 63 connected to the polisher reducer 62. In the present embodiment, polisher 61 is located inside explosion-proof wall 1a, and polisher reducer 62 and polisher power source 63 are located outside explosion-proof wall 1 a; the polisher reducer 62 is connected with the polisher 61 by a detachable polisher extension shaft 64. In the present embodiment, the polishing machine 61 is a disk pelletizer, and the surface shaping of the granular material produced by the pelletizer 41 is realized by the rotation of the disk, so that the surface of the granular material is more regular and smooth, which is beneficial to improving the surface quality of the final finished product.

As shown in fig. 2, according to an embodiment of the present invention, the polishing unit 6 further includes: a polishing feed conveyor 65 and a polishing discharge conveyor 66. In the present embodiment, the polishing feeding and conveying device 65 is used for receiving the material output from the measuring bin 57 and conveying the material to the polishing machine 61 for polishing operation, and the polishing discharging and conveying device 66 is used for conveying the polished molding material to the first dehumidifying and drying unit 7 for the first dehumidifying and drying of the molding material.

Referring to fig. 2, 13 and 14, according to an embodiment of the present invention, the step of performing the dehumidification and drying process on the secondary molded material in step S6 is implemented by the first dehumidification and drying unit 7. In the present embodiment, the first dehumidifying and drying unit 7 includes: the system comprises a hollow first housing 71, a plurality of first conveyors 72 arranged in the first housing 71, a first material guiding structure 73 arranged in the hollow first housing 71, a first dehumidifying device 74, a first feeding mechanism 75 and a first discharging mechanism 76. In the present embodiment, the plurality of first conveyors 72 are arranged in series at intervals in the vertical direction of the first housing 71, and the conveying directions of the adjacent first conveyors 72 are opposite. In this embodiment, the first conveyors 72 are parallel to each other and arranged at intervals in the vertical direction, and are divided into multiple layers of transmission from top to bottom, and through the opposite transmission directions between the adjacent first conveyors 72, the material can be input from one end of the uppermost first conveyor 72, and finally output from one end of the lowermost first conveyor 72, so that the long-distance transmission of the material in the first shell 71 in the limited space is realized, and the dehumidification effect on the material is further ensured. In this embodiment, one side of the first casing 71 is provided with an access door for facilitating the internal maintenance of personnel, thereby effectively improving the reliability of the use of the scheme.

In the present embodiment, the first feeding mechanism 75 receives the polishing material conveyed by the polishing discharge conveyor 66.

As shown in fig. 2, 13, and 14, in the present embodiment, the first discharge mechanism 76 is disposed below the output end of the lowermost first conveyor 72; the first material guiding structure 73 is arranged below the output ends of the remaining first conveyors 72; the first feeding mechanism 75 is disposed above the input end of the uppermost first conveyor 72. In this embodiment, the first feeding mechanism 75 feeds the material to the uppermost first conveyor 72, and then the material fed by the upper first conveyor 72 is transferred to the lower first conveyor 72 through the transitional turning of the first material guiding structure 73, and the material is finally sent to the first discharging mechanism 76 through the reciprocating transportation, so that the dried material is discharged.

Through the arrangement, the optimized treatment of the drying process in a limited space is realized through the combined action of the feeding mechanism, the discharging mechanism, the multilayer conveyor and the material guiding structure, and the drying efficiency is effectively ensured under the condition of effectively improving the space utilization rate.

Through the arrangement, the number of the conveying machines and the number of the material guide structures can be increased or decreased according to needs, and the applicability of the conveying machine is greatly improved.

Referring to fig. 2, 13 and 14, according to an embodiment of the present invention, the plurality of first conveyors 72 in the first housing 71 may be connected through a transmission structure, and the driving of the plurality of first conveyors 72 may be realized by driving one of the first conveyors 72 to be connected. Of course, the first conveyors 72 may be driven individually, and may be selectively provided as needed.

Referring to fig. 13 and 14, according to one embodiment of the present invention, the first material guiding structure 73 includes: a first chute 731, and a first link 732 that is provided at the bottom of the first chute 731 and is capable of extending and retracting. In this embodiment, one end of the first slideway 731 is hinged to the rotating shaft of the upper first conveyor 72 through a connecting arm, and the other end is a free end extending obliquely in a direction close to the lower first conveyor 72, and the free end is spaced from or in contact with the lower first conveyor 72. In this embodiment, a baffle is arranged at the end of the first slide 731 connected to the rotating shaft of the first conveyor 72 for stopping the flying of the material, so that the safety of the present scheme is greatly improved. In this embodiment, the width of the first chute 731 is adapted to the width of the first conveyor 72, so as to completely receive the material conveyed by the upper first conveyor 72 and smoothly convey the material to the lower first conveyor 72. In this embodiment, one end of the first link 732 is hinged to the bottom of the first slideway 731, and the other end is hinged to a side wall of the first housing 71.

Through the arrangement, the first slide 731 arranged in an inclined mode can smoothly receive materials of the first conveyor 72 on the upper layer, the materials can slide downwards to the first conveyor 72 on the lower layer along the inclined surface of the first slide 731 when contacting the first slide 731, and therefore the rapid and stable material conveying is guaranteed.

Through the arrangement, when one end of the first slide 731 is hinged to the upper first conveyor 72, the interval between the first slide 731 and the upper first conveyor 72 is controlled within a small range, so that materials can be conveyed in sequence conveniently, the accumulation of the materials can be effectively inhibited, the adhesion of material pieces is avoided, and the quality of finished products is guaranteed.

Through the arrangement, when the end part of the first slideway 731 is in contact with the first conveyor 72, the reverse scattering of materials can be effectively avoided, and the device is favorable for ensuring the rapid and stable material conveying.

As shown in fig. 13 and 14, according to an embodiment of the present invention, the first link 732 includes: a first rod portion 7321, a second rod portion 7322, and a first sliding sleeve 7323. In this embodiment, the first rod part 7321, the second rod part 7322, and the first sliding sleeve 7323 are coaxially connected; the first rod part 7321 is slidably connected to the first sliding sleeve 7323, and the second rod part 7322 is slidably connected or fixedly connected to the first sliding sleeve 7323.

In this embodiment, when the first sliding sleeve 7323 is slidably connected to the first rod part 7321 and the second rod part 7322, a limiting structure is provided at each of two opposite ends of the first sliding sleeve 7323 to limit the maximum distance between the first rod part 7321 and the second rod part 7322.

According to another embodiment of the present invention, when the first sliding sleeve 7323 is fixedly connected with the second rod portion 7322, it can be fixedly connected by welding to be integrally provided. In this embodiment, a limiting structure is disposed at one end of the first sliding sleeve 7323 slidably connected to the first rod portion 7321 to limit the maximum moving distance of the first rod portion 7321.

As shown in fig. 13, according to an embodiment of the present invention, the first conveyor 72 further includes: a first rotating member 721 and a first belt 722 surrounding the first rotating member 721. In the present embodiment, the driving device is connected to the first rotating member 721. In the present embodiment, the first protrusions 7221 are regularly or randomly provided on the first belt 722 disposed adjacent to the free end of the first slide 731. In the present embodiment, the height of the first projection 7221 is greater than the spaced distance between the free end of the first slideway 731 and the first conveyor belt 722.

In this embodiment, the first conveyor 722 is a chute belt. Through the arrangement, the air permeability of the first conveyor belt 722 is effectively enhanced, and the drying efficiency of the invention is greatly improved. In the present embodiment, the first protrusions 7221 may be formed in a shape of a strip, a granule, a column of protrusions, etc., may be formed of a different wear-resistant material from the first belt 722, and may be detachably or fixedly attached to the surface of the first belt 722 by bonding, riveting, etc.

Through the arrangement, the first protrusions 7221 arranged on the first conveyor belt 722 can abut against the end parts of the slide ways when the first conveyor belt 722 passes through the first slide way 731, so that the slide ways can have small swing amplitude, the slide ways can have a vibration effect, downward conveying of materials is effectively accelerated, and the feeding efficiency of the feeding device is effectively improved. In addition, through the vibration effect of slide, still can break up the effect to the material production, can effectively avoid the bonding of granule material, it is beneficial to the product yield of guaranteeing the material.

As shown in fig. 13, according to an embodiment of the present invention, the first feeding mechanism 75 includes: a first feeding tank 751, a first feeding pipe 752 provided at one side of the first feeding tank 751. In this embodiment, the first feeding pipe 752 is disposed obliquely, and has one end connected to the lower end of the first feeding box 751 and the other end extending into the first housing 71 and located above the input end of the uppermost first conveyor 72 in the first housing 71. In the present embodiment, the first feeding pipe 752 is a straight pipe having a rectangular cross section. In the present embodiment, the bottom of the first feeding box 751 is inclined, and the inclination angle of the bottom is consistent with the inclination angle of the first feeding pipe 752; at this time, the bottom of the first feed bin 751 is disposed flush with the bottom of the first feeding pipe 752.

Through the arrangement, the first feeding mechanism 75 adopts the combined arrangement mode of the first feeding box 751 and the first feeding pipe 752, which is beneficial to the sealing performance of the whole shell, is beneficial to blocking the entering of outside air, and is further beneficial to ensuring the drying effect of the drying device.

With the above arrangement, the bottom of the first feeding box 751 is inclined, which is beneficial to the downward movement of the material, so that the material can be conveniently fed to the first feeding pipe 752 and smoothly fed to the conveying unit, which is beneficial to ensure the efficient and smooth feeding of the present invention. In addition, the arrangement of the inclination angle of the bottom of the first feeding box 751 and the inclination angle of the first feeding pipe 752 in a flush manner is beneficial to further ensure stable and efficient feeding.

As shown in fig. 13, according to an embodiment of the present invention, a first feeding port 7511 is provided at a position where the first feeding tank 751 is connected to the first feeding pipe 752. In this embodiment, a first baffle 7512 which is matched in shape with the first feeding port 7511 is hinged to one side of the first feeding port 7511. In this embodiment, an elastic returning member is provided at a position where the first shutter 7512 is hinged to the first feeding port 7511, and controls opening and closing of the first shutter 7512. In this embodiment, the elastic force of the elastic restoring member can be adjusted or replaced as needed. When there is not the material in first feed box 751, under the effect that the elasticity resets, first baffle 7512 is in the state of closing first pay-off mouth 7511, when the weight of the accumulational material in first feed box 751 can reach and overcome the elasticity that the elasticity resets and provide, can push away first baffle 7512 under the effect of material weight and realize falling smoothly of material, and first pay-off mouth 7511 opens at this moment and is in stable feeding state. And when the weight of the material in the first feeding box 751 is smaller than the elastic force of the elastic reset piece, the elastic reset piece can generate reset action under the action of the elastic force, and the closing state of the first feeding port 7511 is realized again.

Through the arrangement, the first baffle 7512 is arranged at the position of the first feeding port 7511, so that the closed state of the feeding port can be kept under the non-feeding state, the tightness of the whole system is further ensured, and the drying effect of the drying device is ensured. In addition, the mode of opening and closing the feeding port is realized through the simple mechanical structure, and the safety of the invention in the production process is greatly ensured.

As shown in fig. 13, according to an embodiment of the present invention, the first discharging mechanism 76 includes: a hollow first discharging body 761, and a second shutter 762 provided in the first discharging body 761. In this embodiment, the first discharge body 761 is a cylindrical body with both ends open. In this embodiment, the first discharging body 761 may be a tapered cylinder to ensure that the opening at the upper end thereof is larger, so as to receive more materials, which is beneficial to ensure stable discharging of the whole system.

In this embodiment, the second shutter 762 includes: a plurality of first baffle assemblies 7621. In this embodiment, the plurality of first baffle assemblies 7621 are sequentially hinged to the side wall of the first discharging body 761 along the circumferential direction of the first discharging body 761 to close the first discharging body 761. In this embodiment, an elastic restoring member is provided at a hinge position of the first shutter assembly 7621 and the first discharging body 761, for controlling opening and closing of the first shutter assembly 7621. In this embodiment, each first baffle assembly 7621 is provided as a fan-shaped structure, and the side edges of each first baffle assembly 7621 are annularly spliced into a cone-shaped structure around the central axis of the first discharging body 761, which are sequentially contacted with each other, so as to perform the function of movable opening and closing. When the material falls to second baffle 762 and under accumulating a certain amount of state, the elastic force of the elasticity piece that resets of first baffle subassembly 7621 and main part hookup location can be overcome to the weight of material, thereby make first baffle subassembly 7621 overturn downwards, thereby realize opening of second baffle 762, in order to realize the output of material, when the elastic force that the elasticity piece resets is not enough overcome to the volume of material, each first baffle subassembly 7621 then resets under the elastic force effect that the elasticity resets, in order to realize reclosing of second baffle 762.

Through the arrangement, the closed state of the main body can be maintained in a non-discharging state through the arrangement of the second baffle 762, so that the airtightness of the whole system is further ensured, and the drying effect of the drying machine is ensured. In addition, the mode of opening and closing the feeding port is realized through the simple mechanical structure, and the safety of the invention in the production process is greatly ensured.

Through the arrangement, the second baffle 762 is set to be in a conical structure, more materials can be gathered at the central position, so that the smooth opening of the second baffle 762 is facilitated, and the discharging effect of the invention is effectively ensured.

As shown in fig. 13, according to an embodiment of the present invention, the first dehumidifying apparatus 74 includes: at least one dehumidifier 741. In the present embodiment, the dehumidifier 741 is provided on one side or opposite sides in the transport direction of the first transporter 72. In the present embodiment, a dehumidifier 741 may be optionally provided above each of the first conveyors 72.

Through the arrangement, the dehumidifier 741 is adopted for dehumidifying the materials, so that moisture in the air can be absorbed more quickly, a faster dehumidifying effect is realized, the materials are not required to be heated directly, and the production safety of the invention is effectively ensured.

As shown in fig. 13, according to an embodiment of the present invention, the first housing 71 is made of explosion-proof tempered glass.

Through the arrangement, the use safety of the anti-explosion toughened glass is effectively ensured. In addition, the structural operation state in the whole system can be clearly seen, and the method is beneficial to ensuring the operation reliability of the invention.

As shown in fig. 13, according to an embodiment of the present invention, the first dehumidifying and drying unit 7 further includes: a first dehumidifying drying conveyor 77. In the present embodiment, a first dehumidifying and drying conveyor 77 is located below the first discharging mechanism 76 for conveying the dehumidified and dried molding material to the material spraying unit 8 for further processing.

According to an embodiment of the present invention, the number of the first dehumidifying and drying units 7 may be the same as the number of the polishing units 6, and when the polishing units 6 are provided in multiple numbers (e.g., two, three, etc.), the first dehumidifying and drying units 7 are correspondingly provided to achieve the synchronous polishing and drying, thereby ensuring the production efficiency of the present invention.

As shown in fig. 2, in step S7, the coating process is performed on the secondary molded material after the dehumidification drying process to obtain the tertiary molded material, which is implemented by the material spraying unit 8. In the present embodiment, the material spray unit 8 includes: a coating drum 81, a drum reducer 82 connected with the coating drum 81, a power source 83 for a drum machine connected with the drum reducer 82, and a spraying device. In this embodiment, the coating drum 81 is located inside the explosion-proof wall 1a, and the drum reducer 82 and the drum motor power source 83 are located outside the explosion-proof wall 1 a. In this embodiment, the drum reducer 82 is removably coupled to the coating drum 81 by a drum extension shaft 84.

In this embodiment, the coating drum 81 is used for receiving the dried molding material from the first dehumidifying and drying conveyor 77 and performing a coating process on the coating drum 81 to achieve a moisture-proof layer on the outer surface of the molding material. In this embodiment, the spraying device sprays the liquid moisture-proof agent to the material in the coating drum 81 during the operation of the coating drum 81, so that the material forms a coating (i.e., a moisture-proof layer) on the surface during the rolling process.

As shown in fig. 2, according to an embodiment of the present invention, the material spraying unit 8 further includes: coating material output device 85. In the present embodiment, the molding material coated in the coating drum 81 is delivered to the second dehumidifying and drying unit 9 by the coating material output device 85 to realize the second dehumidifying and drying of the molding material, so that the outer coating of the molding material is dried and molded, and the material is effectively coated.

According to an embodiment of the present invention, the number of the spraying units 8 may be the same as the number of the first dehumidifying and drying conveyors 77.

Referring to fig. 2, 15 and 16, according to an embodiment of the present invention, in step S8, the step of performing the dehumidification and drying process on the tertiary molding compound to obtain the finished product is implemented by the second dehumidification and drying unit 9. In the present embodiment, the second dehumidification drying unit 9 includes: a hollow second housing 91, a plurality of second conveyors 92 disposed within the second housing 91, a second material guide structure 93 disposed within the hollow second housing 91, a second dehumidification device 94, a second feed mechanism 95, and a second discharge mechanism 96. In the present embodiment, the plurality of second conveyors 92 are arranged in a row at intervals in the vertical direction of the second housing 91, and the conveying directions of the adjacent second conveyors 92 are opposite. In this embodiment, the second conveyors 92 are parallel to each other and spaced in the vertical direction, and are divided into multiple layers of transmission from top to bottom, and through the opposite transmission direction between the adjacent second conveyors 92, the material can be input from one end of the uppermost second conveyor 92, and finally output from one end of the lowermost second conveyor 92, so that the long-distance transmission of the material in the second shell 91 in the limited space is realized, and the dehumidification effect on the material is further ensured. In this embodiment, one side of second casing 91 is provided with the access door for make things convenient for personnel to carry out the inside maintenance, the effectual use reliability that improves this scheme.

In this embodiment, the second feeding mechanism 95 receives the molding material from the coating material output device 85.

In the present embodiment, the second discharge mechanism 96 is disposed below the output end of the lowermost second conveyor 92; the second material guiding structure 93 is arranged below the output ends of the remaining second conveyors 92; the second feeding mechanism 95 is disposed above the input end of the uppermost second conveyor 92. In this embodiment, the second feeding mechanism 95 conveys the material to the uppermost second conveyor 92, and then the material conveyed by the upper second conveyor 92 can be transferred to the lower second conveyor 92 through the transitional turning of the second material guiding structure 93, and finally the material is conveyed to the second discharging mechanism 96 through the reciprocating transportation, so that the dried material is discharged.

Through the arrangement, the number of the conveyors and the number of the material guide structures can be increased or decreased according to needs, and the applicability of the invention is greatly improved.

Referring to fig. 2, 15 and 16, according to an embodiment of the present invention, the plurality of second conveyors 92 in the second housing 91 may be connected through a transmission structure, and the driving of the plurality of second conveyors 92 may be realized by driving one of the second conveyors 92 to be connected. Of course, the second conveyors 92 may be driven individually, and may be selectively provided as needed.

Referring to fig. 15 and 16, according to an embodiment of the present invention, the second material guiding structure 93 includes: a second slide 931 and a second link 932 which is provided at the bottom of the second slide 931 and is capable of extending and retracting. In this embodiment, one end of the second sliding channel 931 is hinged to the rotating shaft of the upper second conveyor 92 through a connecting arm, and the other end is a free end extending obliquely in a direction approaching the lower second conveyor 92, and the free end is spaced from or in contact with the lower second conveyor 92. In this embodiment, a baffle is disposed at the end of the second slide 931 connected to the rotating shaft of the second conveyor 92, so as to prevent the material from flying out, thereby greatly improving the safety of the present solution. In the present embodiment, the width of the second chute 931 is matched with the width of the second conveyor 92, so as to completely receive the material conveyed by the upper second conveyor 92 and smoothly convey the material to the lower second conveyor 92. In the present embodiment, the second link 932 has one end hinged to the bottom of the second slideway 931 and the other end hinged to the side wall of the second casing 91.

Through the arrangement, the second slide channel 931 arranged in an inclined mode can smoothly receive materials of the upper layer second conveyor 92, the materials can slide downwards to the lower layer second conveyor 92 along the inclined surface of the second slide channel 931 when contacting the second slide channel 931, and therefore the rapid and stable material conveying is guaranteed.

Through the above arrangement, when one end of the second slide channel 931 is hinged to the upper layer second conveyor 92, the interval between the second slide channel 931 and the upper layer second conveyor 92 is controlled within a smaller range, so that the materials can be conveyed in sequence conveniently, the accumulation of the materials can be effectively inhibited, the bonding of the material pieces is avoided, and the quality of finished products is guaranteed.

Through the above arrangement, when the end of the second slideway 931 contacts the second conveyor 92, the material can be effectively prevented from reversely scattering, which is beneficial to ensuring the rapid and stable material conveying.

Referring to fig. 15 and 16, according to an embodiment of the present invention, the second link 932 includes: a third rod portion 9321, a fourth rod portion 9322 and a second sliding sleeve 9323. In the present embodiment, the third rod portion 9321, the fourth rod portion 9322 and the second sliding sleeve 9323 are coaxially connected; the third rod portion 9321 is slidably connected to the second sliding sleeve 9323, and the fourth rod portion 9322 is slidably connected or fixedly connected to the second sliding sleeve 9323.

In this embodiment, when the second sliding sleeve 9323 is slidably connected to the third rod portion 9321 and the fourth rod portion 9322, respectively, a limiting structure is provided at each of two opposite ends of the second sliding sleeve 9323 for limiting the maximum distance between the third rod portion 9321 and the fourth rod portion 9322.

According to another embodiment of the present invention, when the second sliding sleeve 9323 is fixedly connected with the fourth rod portion 9322, it can be fixedly connected by welding to be integrally provided. In this embodiment, a limiting structure is disposed at one end of the second sliding sleeve 9323 slidably connected to the third rod portion 9321 for limiting the maximum moving distance of the third rod portion 9321.

Referring to fig. 15 and 16, according to an embodiment of the present invention, the second conveyor 92 further includes: a second rotating member 921, and a second conveyor belt 922 surrounding the second rotating member 921. In the present embodiment, the driving device is connected to the second rotating member 921. In the present embodiment, the second conveyor belt 922 disposed adjacent to the free end of the second slide 931 is provided with the second protrusions 9221 regularly or randomly. In the present embodiment, the height of the second projection 9221 is greater than the spaced distance between the free end of the second slide 931 and the second conveyor belt 922.

In this embodiment, the second conveyor belt 922 is a chute belt. Through the arrangement, the air permeability of the second conveyor belt 922 is effectively enhanced, and the drying efficiency of the drying machine is greatly improved. In this embodiment, the second protrusions 9221 may be configured as strips, granules, columns, etc., which may be made of different wear-resistant materials from the second conveyor 922, and may be detachably disposed on the surface of the second conveyor 922 or may be fixed by bonding, riveting, etc.

Through the arrangement, the second protrusions 9221 arranged on the second conveyor belt 922 can abut against the end portions of the slide ways when the second conveyor belt 922 passes through the second slide ways 931, so that the slide ways can swing less, the slide ways can have a vibration effect, downward conveying of materials is effectively accelerated, and feeding efficiency is effectively improved. In addition, through the vibration effect of slide, still can break up the effect to the material production, can effectively avoid the bonding of granule material, it is beneficial to the product yield of guaranteeing the material.

As shown in fig. 15, according to an embodiment of the present invention, the second feeding mechanism 95 includes: a second feeding box 951, and a second feeding pipe 952 arranged at one side of the second feeding box 951. In this embodiment, the second feeding pipe 952 is disposed obliquely, and has one end connected to the lower end of the second feeding box 951 and the other end extending into the second housing 91 and located above the input end of the uppermost second conveyor 92 in the second housing 91. In the present embodiment, the second feed pipe 952 is a straight pipe having a rectangular cross section. In this embodiment, the bottom of the second feeding box 951 is inclined, and the inclination angle of the bottom is consistent with that of the second feeding pipe 952; at this time, the bottom of the second feeding box 951 is disposed flush with the bottom of the second feeding pipe 952.

Through the arrangement, the second feeding mechanism 95 adopts a combined arrangement mode of the second feeding box 951 and the second feeding pipe 952, so that the sealing performance of the whole shell is facilitated, the entering of outside air is blocked, and the drying effect of the shell is further ensured.

Through the arrangement, the bottom of the second feeding box 951 is inclined, so that the materials can move downwards, the materials can be conveniently conveyed to the second feeding pipe 952 and smoothly conveyed to the transmission unit, and efficient and smooth feeding of the feeding device is guaranteed. In addition, with the setting of flushing that the inclination of second feeding case 951 bottom is unanimous with the inclination of second conveying pipe 952, it is beneficial to further guarantee to stabilize the efficient feeding.

As shown in fig. 15, according to an embodiment of the present invention, a second feed port 9511 is provided at a position where the second feed tank 951 is connected to the second feed pipe 952. In this embodiment, a third baffle 9512 is hinged to one side of the second feed port 9511 and has a shape corresponding to the second feed port 9511. In this embodiment, an elastic reset member is provided at a position where the third shutter 9512 is hinged to the second feeding port 9511, and is used to control opening and closing of the third shutter 9512. In this embodiment, the elastic force of the elastic restoring member can be adjusted or replaced as needed. When there is not the material in second feeding case 951, under the effect that the elasticity resets, third baffle 9512 is in the state of closing second pay-off mouth 9511, when the weight of the accumulational material can reach the elastic force that overcomes the elasticity and reset and provide in second feeding case 951, can push away the smooth whereabouts that third baffle 9512 realized the material under the effect of material weight, and second pay-off mouth 9511 opens this moment and is in stable feeding state. And after the weight of material at second feeding case 951 is less than the elastic force that the elasticity resets the piece, the elasticity resets the piece and can produce the action that resets under the effect of elastic force, realizes the closed condition to second pay-off mouth 9511 again.

Through the arrangement, the third baffle 9512 is arranged at the position of the second feeding port 9511, so that the closed state of the feeding port can be kept under the non-feeding state, the tightness of the whole system is further ensured, and the drying effect of the drying device is further ensured. In addition, the mode of opening and closing the feeding port is realized through the simple mechanical structure, and the safety of the invention in the production process is greatly ensured.

As shown in fig. 15, according to an embodiment of the present invention, the second discharging mechanism 96 includes: a hollow second outlet body 961, and a fourth baffle 962 disposed within the second outlet body 961. In the present embodiment, the second discharging body 961 is a cylindrical body with both ends open. In this embodiment, the second discharging body 961 may be a cone-shaped cylindrical body to ensure that the opening at the upper end thereof is larger, so as to receive more materials, which is beneficial to ensure stable discharging of the whole system.

In the present embodiment, the fourth shutter 962 includes: a plurality of second baffle members 9621. In this embodiment, a plurality of second baffle assemblies 9621 are sequentially hinged to the side wall of the second discharging body 961 along the circumferential direction of the second discharging body 961 for closing the second discharging body 961. In this embodiment, an elastic reset member is provided at a hinge position of the second shutter assembly 9621 and the second discharging body 961 to control opening and closing of the second shutter assembly 9621. In this embodiment, each second baffle assembly 9621 is configured as a fan-shaped structure, and the side edges of each second baffle assembly 9621 are sequentially connected and annularly spliced to form a conical structure around the central axis of the second discharging main body 961, so as to perform the movable opening and closing function. When the material falls onto the fourth baffle 962 and accumulates a certain amount, the weight of the material can overcome the elastic force of the elastic reset piece at the connecting position of the second baffle 9621 and the main body, so that the second baffle 9621 is turned downwards, the fourth baffle 962 is opened, the material is output, and when the amount of the material is not enough to overcome the elastic force of the elastic reset piece, each second baffle 9621 is reset under the elastic force action of the elastic reset piece, and the fourth baffle 962 is closed again.

Through the arrangement, the fourth baffle 962 can keep the closed state of the main body in the state of no discharging, which is beneficial to further ensuring the tightness of the whole system, thereby being beneficial to ensuring the drying effect of the invention. In addition, the mode of opening and closing the feeding port is realized through the simple mechanical structure, and the safety of the invention in the production process is greatly ensured.

Through the arrangement, the fourth baffle 962 is in a conical structure, so that more materials can be gathered at the central position, the smooth opening of the fourth baffle 962 is facilitated, and the discharging effect of the invention is effectively ensured.

As shown in fig. 15, according to an embodiment of the present invention, the second dehumidifying apparatus 94 includes: at least one dehumidifying dryer 941. In the present embodiment, the dehumidifying dryer 941 is disposed at one side or opposite sides of the conveying direction of the second conveyor 92. In the present embodiment, a dehumidifying dryer 941 may be optionally disposed above each second conveyor 92.

Through the arrangement, the dehumidification dryer 941 is used for dehumidifying materials, so that moisture in air can be absorbed more quickly, a faster dehumidification effect is achieved, the materials do not need to be heated directly, and the production safety of the dehumidification dryer is effectively guaranteed.

As shown in fig. 15, according to an embodiment of the present invention, the second housing 91 is made of explosion-proof tempered glass.

As shown in fig. 15, according to an embodiment of the present invention, the second dehumidifying and drying unit 9 further includes: a second dehumidifying drying conveyor 97. In the present embodiment, a second dehumidifying and drying conveyor 97 is located below the second discharging mechanism 96 for conveying the dehumidified and dried molding material to the packaging unit 10 for further packaging.

According to an embodiment of the present invention, the number of the second dehumidifying and drying units 9 may be the same as the number of the material spraying units 8, and when the material spraying units 8 are provided in multiple numbers (e.g., two, three, etc.), the second dehumidifying and drying units 9 are also correspondingly provided, so as to implement synchronous operation of the two processes, thereby ensuring the production efficiency of the present invention.

In this embodiment, since the moisture-proof agent is mainly used to perform the moisture-proof drying process during the process of performing the moisture-proof drying process on the tertiary molding material in step S8, the drying time of the material in the second moisture-proof drying unit 9 is shorter than that in the first moisture-proof drying unit. And the corresponding second dehumidifying and drying unit 9 can also achieve the effect of short time by controlling the operation speed of the structure or reducing the length of the conveyor.

As shown in fig. 2, in step S9, the steps of hermetically sealing and packaging the obtained finished product, and automatically outputting after stacking are performed based on the packaging unit 10. In the present embodiment, the packaging unit 10 includes: an automatic packaging machine 101 and an automatic palletizer 102. In the embodiment, the automatic packaging machine 101 automatically packs and boxes the materials conveyed by the second dehumidifying and drying conveyor 97, and then conveys the materials to the automatic stacking machine 102 through the conveying device for automatic stacking, and then conveys the materials to the outside of the blast wall 1a, thereby completing the production of the sealant.

In the present embodiment, the automatic packaging machine 101 has a packaging machine power source 1011, and the packaging machine power source 1011 is similarly disposed outside the blast wall 1a and connected to the automatic packaging machine 101 by a connecting structure.

In the present embodiment, the automatic stacker 102 has a stacker power source 1021, and the stacker power source 1021 is also provided outside the blast wall 1a and connected to the automatic stacker 102 by a connection structure.

According to one embodiment of the invention, when the batching unit 1, the mixing unit 2, the first screening unit 3, the pair-roller extruding unit 4, the second screening unit 5, the polishing unit 6, the first dehumidifying and drying unit 7, the spraying unit 8, the second dehumidifying and drying unit 9 and the packaging unit 10 are respectively connected with an external power source through a connecting piece (such as an extension shaft) penetrating through the explosion-proof wall 1a, a sliding sealing structure is arranged between the connecting piece (such as the extension shaft) and the explosion-proof wall 1 a.

Through the arrangement, the sliding sealing structure is arranged, so that gaps generated when the connecting piece penetrates through the explosion-proof wall 1a are effectively eliminated, and the use safety of the whole device is effectively guaranteed. Meanwhile, the explosion-proof wall 1a can also play a supporting role on the input shaft by arranging the sliding sealing structure, so that the rotation stability of the prolonged shaft body is further favorable. In addition, can not produce the restriction to the axial and the direction of rotation of input shaft when setting up sliding seal structure, and then beneficial to guaranteeing the normal rotation of axis body.

The foregoing is merely exemplary of particular aspects of the present invention and devices and structures not specifically described herein are understood to be those of ordinary skill in the art and are intended to be implemented in such conventional ways.

The above description is only one embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for producing an elastomeric compound, comprising:

s1, mixing and stirring a reducing agent, an oxidizing agent and an adhesive according to a preset proportion, spraying liquid into a mixed material containing the reducing agent, the oxidizing agent and the adhesive in the mixing and stirring process, and forming the mixed material into loose powder after the mixing and stirring are finished; wherein the reducing agent, the oxidizing agent, and the binder are all solid powders;

s2, screening and mixing the mixed material; wherein, a roller sieving machine is adopted for sieving and mixing treatment;

the roller screening machine is coaxially provided with a plurality of roller screens; wherein, the meshes of the adjacent roller screens are arranged in a staggered way or the sizes of the meshes of the adjacent roller screens are different;

s4, screening the primary molding material;

s5, polishing the primary molding material after the screening treatment to obtain a secondary molding material; polishing the primary molding material based on a polishing unit; the polishing unit includes: the polishing machine, the polishing machine speed reducer connected with the polishing machine and the polishing machine power source connected with the polishing machine speed reducer are used;

the polishing machine is a disc granulator and is used for carrying out rolling polishing on the primary molding material;

s6, dehumidifying and drying the secondary molding material;

s7, coating the secondary molding material subjected to dehumidification and drying treatment to obtain a tertiary molding material; coating the secondary molding material based on a material spraying unit; the material spraying unit comprises: the coating device comprises a coating drum, a drum speed reducer connected with the coating drum, a drum machine power source connected with the drum speed reducer and a spraying device;

the coating drum receives the secondary molding material after the dehumidification and drying treatment, and the spraying device sprays liquid moisture-proof agent to the secondary molding material in the coating drum so as to form a coating on the surface of the secondary molding material in the rolling process;

2. The production method according to claim 1, wherein in step S1, in the step of spraying a liquid into the mixture containing the reducing agent, the oxidizing agent and the binder during mixing and stirring, the liquid is at least one of an aqueous inorganic solution, an aqueous organic solution and water.

3. The production method according to claim 1 or 2, wherein in step S1, in the step of spraying a liquid into a mixture containing the reducing agent, the oxidizing agent and the binder during mixing and stirring, an amount of the liquid sprayed into the mixture is less than 40% by mass of the mixture.

4. The method of claim 3, wherein in the step of screening the primary molded material in step S4, the screened defective primary molded material is returned to step S3 to be re-extruded.

5. The production method according to claim 4, wherein in step S7, the moisture-proof agent is added in an amount of 10% or less by mass based on the mass of the overmold.

6. The production method according to claim 2, characterized in that the inorganic substance solution is: a salt solution or an alkaline solution;

the aqueous organic solution is alcohol.

7. The production method according to claim 1, further comprising: