CN113509996A

CN113509996A - Fish feed production system based on kitchen waste biological treatment

Info

Publication number: CN113509996A
Application number: CN202110940272.XA
Authority: CN
Inventors: 孟行健; 魏道春; 王玉峰; 李孝振
Original assignee: Anhui Kunjian Biotechnology Co ltd
Current assignee: Anhui Kunjian Biotechnology Co ltd
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2021-10-19

Abstract

The invention relates to a fish feed production system based on kitchen waste biological treatment, which comprises: crushing equipment, extrusion dehydration equipment, a biochemical reaction cabin, drying equipment, grinding equipment and granulation equipment. The milling equipment is used for milling the dried materials in the drying equipment. The milling equipment comprises a crushing mechanism and a grinding mechanism. And the crushing mechanism is used for crushing the material dried by the drying equipment. The crushing mechanism comprises a crushing barrel, a crushing motor, a cutting knife and a crushing right shaft. The crushing shaft is coaxially and rotatably arranged inside the crushing barrel. The crushing motor is used for driving the crushing shaft to rotate. A plurality of cutting knives are fixed on the material crushing shaft in a spiral mode along the axial direction of the material crushing shaft. The grinding mechanism is used for grinding the materials which are crushed by the crushing mechanism. The production system can crush the caked dry materials and then grind the caked dry materials, so that powdery materials can be obtained, granulation of the powdery materials is facilitated, and the caked dry materials are beneficial to digestion and absorption of fishes.

Description

Fish feed production system based on kitchen waste biological treatment

Technical Field

The invention relates to the technical field of kitchen waste biological treatment, in particular to a fish feed production system based on kitchen waste biological treatment.

Background

The kitchen waste is a domestic waste formed by residents in the process of domestic consumption, and various organic substances contained in the kitchen waste are extremely easy to corrode in summer; at present, the domestic treatment method of the kitchen waste mainly comprises a chemical treatment method and a biological treatment method. The chemical treatment method uses a chemical reaction to decompose organic substances in the kitchen waste by adding chemical substances, and then buries the kitchen waste. The method has the advantages of simplicity and high efficiency, and has the defects that a large amount of useful substances in the kitchen waste are wasted and secondary pollution is easily caused. The biological treatment method is to convert the kitchen waste into fertilizer or feed for agriculture and breeding through some treatment processes. The method conforms to the guidelines of reduction, harmlessness and reclamation.

In the process of converting kitchen waste into fish feed by using a biological treatment method at present, the fish feed prepared from the kitchen waste has the problems that material particles are large, so that the kitchen waste is inconvenient to granulate and fish digestion is inconvenient.

Disclosure of Invention

Therefore, the invention provides a fish feed production system based on kitchen waste biological treatment, aiming at the problems that in the process of converting kitchen waste into fish feed by using the existing biological treatment method, the fish feed made of the kitchen waste has large material particles, so that the food waste is inconvenient to granulate and the fish is inconvenient to digest.

A fish feed production system based on kitchen waste biological treatment, which comprises: crushing equipment, extrusion dehydration equipment, a biochemical reaction cabin, drying equipment, grinding equipment and granulation equipment. The crushing device is used for crushing the material to be treated. The extrusion dehydration equipment is used for carrying out extrusion dehydration on the materials crushed by the crushing equipment. The biochemical reaction cabin is used for carrying out microbial treatment on the material output by the dehydration extrusion equipment. The drying equipment is used for drying the materials after the microbial treatment of the biochemical reaction cabin. The milling equipment is used for milling the dried materials in the drying equipment. And the granulating equipment is used for granulating the powder material generated by the grinding equipment. The milling equipment comprises a crushing mechanism and a grinding mechanism.

And the crushing mechanism is used for crushing the material dried by the drying equipment. The crushing mechanism comprises a crushing cylinder, a crushing motor, a cutting knife and a crushing shaft. The crushing shaft is coaxially and rotatably arranged inside the crushing barrel. The crushing motor is arranged on the crushing barrel and is used for driving the crushing shaft to rotate. The cutting knife is provided with a plurality ofly, and a plurality of cutting knives are fixed on the bits of broken glass axle along the axial spiral of bits of broken glass axle.

The grinding mechanism is used for grinding the materials which are crushed by the crushing mechanism. The grinding mechanism comprises a grinding cylinder, a grinding roller and a grinding motor. The inside top-down of grinding vessel divide into feeding chamber, grinding chamber and material collecting chamber in proper order, and material collecting chamber, grinding chamber, the coaxial setting of pan feeding chamber three and communicate each other. The grinding roller is coaxially and rotatably arranged in the grinding cavity. The grinding motor is installed in the grinding cylinder and is used for driving the grinding roller to rotate. A grinding space is formed between the peripheral wall of the grinding roller and the grinding cavity. The end face clearance of the grinding space is gradually reduced from top to bottom. The peripheral wall of the grinding roller is provided with threads and used for enabling the materials in the grinding space to move to the material collecting cavity in a directional mode through rotating the grinding roller.

In one embodiment, the spitwading mechanism further comprises an electrically operated valve. The electric valve is arranged in the outlet of the crushing cylinder, and the outlet of the crushing cylinder is communicated with the feeding cavity of the grinding cylinder.

In one embodiment, the grinding cylinder is also internally provided with a collecting channel. The collecting channel is positioned above the collecting cavity and is communicated with the collecting cavity. The grinding cylinder is positioned on the inner wall of the grinding cavity and is provided with a plurality of through holes communicated with the collecting channel, and the aperture of each through hole is the same as the size of the gap at the minimum end of the grinding space.

In one embodiment, the grinding roller is cylindrical. The inner space of the grinding cavity is in a round table shape, and the caliber of the grinding cavity is gradually reduced from top to bottom.

In one embodiment, the grinding roller is in a circular truncated cone shape, and the section radius of the grinding roller is gradually increased from top to bottom. The inner space of the grinding cavity is cylindrical.

In one embodiment, the grinding mechanism further comprises a cleaning assembly for cleaning the plurality of through holes. The cleaning assembly comprises a cleaning brush and a lifting unit. The cleaning brush is in a circular tube shape and is coaxially arranged inside the collecting channel. The brush hair setting of clearance brush is in the one side that the clearance brush faced the grinding roller, and the brush hair of clearance brush can stretch into in every through-hole. The lifting unit is fixed in the collecting channel and is used for driving the cleaning brush to move along the axial direction of the grinding roller.

In one embodiment, the kitchen waste biological treatment-based fish feed production system further comprises a pelleting device. The granulation apparatus comprises: granulation case, extrusion mechanism, clearance mechanism, roll surface monitoring subassembly, controller. The top of the granulation box is provided with a feeding port.

The extrusion mechanism comprises an extrusion motor and two extrusion rollers matched with each other. The extrusion motor is installed on the granulation box and is used for driving the extrusion roller to rotate. The extrusion roller is rotatably arranged in the granulating box. The axial directions of the two squeeze rollers are arranged in parallel, and the two ends are aligned. The tangent position of the two extrusion rollers is positioned below the feeding port.

The number of cleaning mechanisms is matched with the number of extrusion rollers. Each cleaning mechanism corresponds to one of the extrusion rollers and is used for cleaning the roller surface of the extrusion roller. Each cleaning mechanism comprises a mounting plate, a brush and a telescopic piece. The hairbrush is fixed on the mounting plate, and the extending direction of the hairbrush is parallel to the axial direction of the extrusion roller. The length of the brush in the extending direction is not less than the axial length of the squeeze roller. The mounting plate is arranged in the granulating box and can move to enable the brush to contact or separate from the roller surface of the extrusion roller. The extensible member is fixed on the granulation box and is used for driving the mounting plate to move.

The number of roll surface monitoring assemblies is matched with the number of squeeze rolls. Each roll surface monitoring assembly corresponds to one of the squeeze rolls and is used to monitor the roll surfaces of the squeeze rolls. Each roll surface monitoring assembly comprises an image acquisition module, an image processing module and a data transmission module. The image acquisition module is arranged on the inner wall of the granulation box and is used for acquiring a corresponding roller surface image in a preset roller surface area in real time. The image processing module is used for preprocessing the roller surface images and respectively extracting the color feature, the texture feature and the brightness feature of each roller surface image. The image processing module is also used for carrying out weighted fusion on the color feature, the texture feature and the brightness feature to form a fusion feature. The image processing module acquires a material region image in the roller surface image through fusion characteristics and calculates a material region S_AIn the collected roll surface area S_BThe calculation formula of the ratio O in (1) is O ═ S_A/S_B. The data transmission module is used for sending the ratio O. And

the controller comprises a receiving module, a judging module and a feedback module. The receiving module is used for receiving the proportion O sent by the roller surface monitoring component. The proportion O includes proportion one O1 and proportion two O2 corresponding to the two press rolls, respectively. The judging module is used for respectively judging whether the first ratio O1 and the second ratio O2 are larger than a preset ratio, and when any one of the first ratio O and the second ratio O2 is larger than the preset ratio, the feedback module controls the corresponding cleaning mechanism to enter a cleaning mode so as to clean the squeeze roller.

In one embodiment, when any one of the occupation ratios O is smaller than a preset ratio, the feedback mode controls the corresponding cleaning mechanism to enter the standby mode. The cleaning mode is that the brush is contacted with the roller surface of the corresponding squeeze roller. The standby mode is that the brushes are separated from the roller surfaces of the corresponding squeezing rollers.

In one embodiment, a first support frame is fixed in the crushing barrel. The top end of the crushing shaft is rotatably connected with the top wall of the crushing barrel, and the bottom end of the crushing shaft is rotatably connected with the supporting frame. The crushed aggregates motor is installed at the top of the crushed aggregates barrel, and the output end of the crushed aggregates motor passes through the top wall of the crushed aggregates barrel and is fixed with the crushed aggregates shaft.

In one embodiment, a second support frame is fixed in the aggregate cavity. The grinding motor is fixed on one side of the support frame far away from the grinding roller. The top wall of the grinding cylinder at one end of the grinding roller is rotatably connected with the grinding roller through a bearing and a second support frame, and the output end of the grinding motor is fixedly connected with one end of the grinding roller.

Has the advantages that:

1. this production system carries out preliminary breakage through the dry material of crushed aggregates mechanism with the caking earlier for cubic material after the breakage satisfies the grinding requirement, can reduce grinding device and take place because the equipment that cubic material volume is great and cause damages, then grinds the processing through the material after the grinding mechanism to the breakage, thereby can obtain the powdered material that accords with the requirement. In the grinding process, at the uniform velocity of grinding roller through ordering about, because set up screw thread on the grinding roller, pile up originally and receive vertical decurrent effect at the cubic material of grinding space entrance, constantly move down in grinding the space, at the in-process that moves down, the material of caking receives the rubbing motion of squeeze roll and grinding intracavity wall and rolls, it is the material of littleer particle diameter to be ground, and because at the in-process that moves down, the clearance in grinding the space is more and more littleer, can make the material constantly receive further grinding, finally satisfy required particle size's powdered material. On one hand, the granulation of the subsequent materials can be facilitated, so that the subsequent granular materials can be conveniently transported and stored. On the other hand, after the powdery material is subsequently processed into particles, when the fish feed is thrown to fish, the material is soaked in water and keeps a certain shape, after the fish eat the powdery material, the material is turned into paste, the contact area between the powdery material and the fish digestive juice is increased, and therefore the powdery material is beneficial to the digestion and absorption of the fish feed after the fish eat the powdery material.

2. This production system's granulation equipment is through setting up clearance mechanism, and the brush can strike off remaining clout in the roll surface and the granulation recess of squeeze roll when contacting with the pivoted squeeze roll to can carry out effectual clearance to the roll surface and the granulation recess of squeeze roll, and then improve the efficiency and the granulation quality of follow-up granulation. Can calculate the material area in the roll surface area of gathering in real time through setting up roll surface monitoring subassembly and account for the ratio, thereby can judge whether current squeeze roll needs the clearance, and then realize the in good time clearance to the squeeze roll, both can avoid remaining the clout on the squeeze roll to cause the influence to the quality of follow-up extrusion granule after accumulating a certain amount, can avoid the brush to clean the squeeze roll wearing and tearing that lead to again to the squeeze roll for a long time, can also reduce the roller scurf that mix with in the extrusion granule, further promoted the granulation quality to roll-type extrusion granulator.

3. This production system's granulation equipment's squeeze roll's axial length and pan feeding mouth's extension length match each other, get into the granulation case along the pan feeding mouth of rectangular shape through letting the powder material that is not extruded, can make the powder material distribute all over between two squeeze rolls along the axial of squeeze roll to avoid the powder to a certain extent along the uneven phenomenon of squeeze roll axial distribution, and then reduce the degree that the local emergence deformation of squeeze roll used for a long time.

4. This production system's granulation equipment judges clearance mechanism through setting up the controller and whether need clean, then through calculating the difference of real-time distance and predetermineeing the distance, can realize that the brush can be comparatively accurate when getting into clean mode stop with the state of squeeze roll contact to clean the roll surface of squeeze roll. When the squeeze rollers do not need to be cleaned, the hairbrushes can be far away from the corresponding squeeze rollers and are not in contact with each other, and mutual influence is reduced.

5. This production system's granulation equipment is through setting up pan feeding mechanism, when refining pole is rotatory and one of them plectrum claw stretches in the pan feeding mouth, two plectrums claws adjacent with this plectrum claw can link to each other and form a separation district with the pan feeding fill inner wall, and the powder material in the separation district can not drop easily into the pan feeding mouth. Consequently when the refining rod drives a plurality of stirring claw dwang, pile up all the other powder materials inside going into the hopper and can not fall into the pan feeding mouth without stirring to realized even unloading, effectively controlled the ration and all with the distribution of the powder material that gets into extrusion mechanism, and then improved extrusion mechanism's extrusion quality.

6. This production system's granulation equipment is through setting up collecting box one, collecting box two and stock guide, because clearance mechanism can carry out timely cleanness to the roll surface of squeeze roll, and the remaining clout on roll surface breaks away from and falls from the roll surface once the cleanness of brush, and this embodiment is through addding the stock guide for accept these clouts that fall, thereby with these clouts from the granulation incasement via opening one leading-in to collecting box two. And because the biochemical properties of the excess materials in the whole extrusion process and the cleaning process can not be obviously changed, the excess materials can be timely collected and recycled, thereby avoiding waste and further conforming to the resource policy.

7. The granulating equipment of the production system is provided with the screen, the vibrating motor, the third collecting box and the fourth collecting box, one part of materials discharged from the extruding mechanism and the cleaning mechanism is extruded into granular materials, and the granular materials can be further refined and packaged subsequently to finally become finished fish feed. And the other part is the residual materials cleaned by the cleaning mechanism and the powder which is not extruded and formed by the extruding mechanism, when the residual materials fall on the screen, a directional vibration wave is formed on the screen through the vibration of the vibration motor, and some large residual materials are directly vibrated into small blocks due to the fact that the large residual materials do not have the stability of spherical particles and fall into the collecting box III together with other powder from the screen holes on the screen. And the granular materials remained above the screen are always remained above the screen and gradually move to the opening II because the diameter of the granular materials is larger than the preset aperture of the screen, and finally fall into the collection box IV. Therefore, the materials derived by the extruding mechanism and the cleaning mechanism can be primarily screened, and substances which do not meet the requirements, such as most of powder, excess materials and the like, can be filtered, so that the yield is improved, and the time cost consumed by subsequent fine screening is saved.

Drawings

Fig. 1 is a schematic perspective view of a milling apparatus of a fish feed production system based on kitchen waste biological treatment in embodiment 1 of the present invention;

FIG. 2 is an internal schematic view of the spitwad mechanism of FIG. 1;

fig. 3 is a schematic perspective view of the particle shaft of fig. 2;

FIG. 4 is a schematic cross-sectional view of the grinding mechanism of FIG. 1;

FIG. 5 is a front view of the grinding roll of FIG. 4;

FIG. 6 is a schematic perspective view of the grinding roll of FIG. 5 (threads of the grinding roll, and bristles of the cleaning brush are not shown);

FIG. 7 is a schematic perspective view of the grinding cylinder of FIG. 4;

FIG. 8 is a schematic block diagram of a granulating apparatus in example 2 of the present invention;

fig. 9 is a schematic perspective view of a granulating device of the kitchen waste biological treatment-based fish feed production system in fig. 8;

FIG. 10 is a schematic perspective view of the internal structure of the granulation tank of FIG. 9;

FIG. 11 is a schematic sectional front view of the granulation apparatus of FIG. 9;

fig. 12 is a schematic perspective view of a granulation apparatus of a fish feed production system based on kitchen waste biological treatment in accordance with embodiment 3 of the present invention;

FIG. 13 is a schematic sectional front view of the granulation apparatus of FIG. 12;

FIG. 14 is an enlarged view taken at A in FIG. 13;

fig. 15 is a schematic perspective view of a pelleting device for producing fish feed based on biological treatment of kitchen waste in embodiment 4 of the invention;

FIG. 16 is a schematic sectional front view of the granulation apparatus of FIG. 15;

fig. 17 is a schematic perspective view of a pelleting device for producing fish feed based on biological treatment of kitchen waste in embodiment 5 of the invention;

fig. 18 is a schematic sectional front view of the granulation apparatus of fig. 17. .

Description of the main elements

1. A granulation box; 101. a feeding port; 102. a chute; 103. a first opening; 104. a second opening; 2. an extrusion mechanism; 21. an extrusion motor; 22. a squeeze roll; 221. a half ball socket; 3. a cleaning mechanism; 31. mounting a plate; 32. a brush; 33. a telescoping member; 4. a roll surface monitoring assembly; 41. an image acquisition module; 42. an image processing module; 43. a data transmission module; 5. a controller; 51. a receiving module; 52. a judgment module; 53. a feedback module; 6. a feeding mechanism; 61. feeding into a hopper; 62. a refining assembly; 621. a material homogenizing rod; 622. a material poking claw; 623. a drive motor; 8. a first collecting box; 9. a second collecting box; 10. a material guide plate; 11. screening a screen; 12. a vibration motor; 13. a third collecting box; 14. a fourth collecting box; 15. a support block; 16. a damping spring; 17. a distance sensing component; 181. crushing the material barrel; 182. a material crushing motor; 183. a cutting knife; 184, a first electrode; a shredder shaft; 185. an electromagnetic valve; 191. a grinding cylinder; 1911. a feeding cavity; 1912. a grinding chamber; 1913. a material collecting cavity; 1914. a collection channel; 1915. a through hole; 192. a grinding roller; 193. grinding the motor; 194. cleaning a brush; 195. a lifting unit; 201. a first support frame; 202. and a second support frame.

The present invention is described in further detail with reference to the drawings and the detailed description.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Example 1

This embodiment provides a fish feed production system based on kitchen garbage biological treatment, it includes: crushing equipment, extrusion dehydration equipment, a biochemical reaction cabin, drying equipment, grinding equipment and granulation equipment.

Crushing equipment (not shown) is used to crush the material to be treated. In this embodiment, can adopt sorting equipment to carry out manual work and machine separation to the kitchen garbage of treating earlier, select debris such as plastic bag, ladle, instant noodle bucket that mix with in the sorting kitchen garbage, remain the organic matter rubbish that can carry out biological treatment. The crushing device can adopt an existing crusher (such as a double-roller crusher) and can crush and cut the food clusters or other solid compositions in the kitchen waste so as to facilitate subsequent treatment.

The squeezing and dewatering device (not shown) is used for squeezing and dewatering the materials crushed by the crushing device. In this embodiment, since the kitchen waste contains a large amount of liquid, such as wet waste of fruit peel, vegetable leaves, etc., and the broken kitchen waste needs to be in a proper humidity range to facilitate the biochemical reaction, the kitchen waste needs to be squeezed and dehydrated to create proper conditions for the fermentation of the strains for subsequent biological treatment, thereby completing the rapid fermentation. In addition, the liquid separated from the wet garbage can be subjected to harmless treatment such as oil-water separation, so that the standard of discharge can be achieved.

The biochemical reaction cabin is used for carrying out microbial treatment on the material output by the dehydration extrusion equipment. In this embodiment, the extruded and dehydrated material can be stacked in a degradation bin for biological fermentation. Each biochemical reaction cabin can be also provided with an electric heating constant temperature system, so that the temperature suitable for the survival and fermentation of zymophyte can be kept in the degradation cabin on one hand, and various germs and parasites in the kitchen waste materials can be effectively killed on the other hand. In other embodiments, a stirring system can be further equipped in the biochemical reaction chamber to regularly stir the materials in the degradation chamber, so that the reaction efficiency of fermentation is improved.

The drying equipment is used for drying the materials after the microbial treatment of the biochemical reaction cabin. In this embodiment, because fish fodder finished product is the particulate matter to in fish throw something and feed, and before the graininess fish fodder was made, need carry out drying process to the material of caking, in order to make things convenient for follow-up powderization to handle, on the other hand is owing to moisture is dried in the material after the drying, can effectively prevent the rotten of material in the follow-up production process, prolongs the shelf life of material.

Referring to fig. 1, the production system further includes a powder grinding device for grinding the dried material in the drying device. The milling equipment includes: crushing mechanism, grinding mechanism.

Referring to fig. 2 and 3, the crushing mechanism is used for crushing the material dried by the drying device. The crushing mechanism comprises a crushing cylinder 181, a crushing motor 182, a cutting knife 183 and a crushing shaft 184. The crushing shaft 184 is coaxially rotatably installed inside the crushing cylinder 181. A shredder motor 182 is mounted to the shredder barrel 181 and is used to drive the shredder shaft 184 for rotation. The cutting knives 183 are provided in plural, and the plural cutting knives 183 are fixed on the crushing shaft 184 spirally along the axial direction of the crushing shaft 184. The cutting knife 183 can be detachably mounted on the crushing shaft, so that the passivated cutting knife 183 can be replaced regularly, and the crushing effect of the crushing mechanism is maintained.

A first support frame 201 can be fixed in the crushing barrel 181. The top end of the crushing shaft 184 can be rotatably connected with the top wall of the crushing cylinder 181, and the bottom end of the crushing shaft 184 can be rotatably connected with the first support frame 201. A scrap motor 182 is mounted on top of the scrap barrel 181 with the output of the scrap motor 182 passing through the top wall of the scrap barrel 181 and secured to a scrap axle 184. In other embodiments, the spitwad mechanism may also include an electrically actuated valve 185. An electrically operated valve 185 may be provided in the outlet of the grinding cylinder 181.

In this embodiment, most of the dried material in the drying device is in a lump state, and if some large material is directly ground, it may cause damage to the components in the grinding mechanism, which is not favorable for the grinding process. Therefore, it is necessary to crush the above-mentioned large materials into smaller materials with a certain particle size. In-process that crushed aggregates mechanism carried out the fragmentation and handles, the caking material after the drying is put in crushed aggregates section of thick bamboo 181 from the entry of crushed aggregates section of thick bamboo 181, and when crushed aggregates motor 182 ran, its output ordered about crushed aggregates axle 184 high-speed rotation in crushed aggregates section of thick bamboo 181 to it is high-speed rotatory to drive a plurality of cutting knives 183, carries out the fragmentation cutting to the dry caking material. What need to explain here is because a plurality of cutting knives 183 are spiral arrange on crushed aggregates axle 184, when a plurality of cutting knives 183 are rotatory cutting material, can also provide vertical ascending lifting force for the cubic material that sinks the end because of the action of gravity originally risees, thereby lasts, abundant cutting fragmentation to the material of a section of thick bamboo interior low department, promotes the fragmentation effect.

Referring to fig. 4, the grinding mechanism is used for grinding the material after the material crushing mechanism is crushed. The grinding mechanism includes a grinding cylinder 191, grinding rollers 192, and a grinding motor 193.

The interior of the grinding cylinder 191 is sequentially divided into a feeding cavity 1911, a grinding cavity 1912 and a collecting cavity 1913 from top to bottom, and the collecting cavity 1913, the grinding cavity 1912 and the feeding cavity 1911 are coaxially arranged and are communicated with each other. The outlet of the grinding cylinder 181 may be in communication with the feed chamber 1911 of the grinding cylinder 191. After the uncrushed material is put into the milling drum 181 and crushing is started, the electric valve 185 may be opened after a predetermined time, so that the crushed material is conveyed to the feeding cavity 1911 of the grinding drum 191. In this embodiment, the feeding speed of the crushed material into the milling tube 191 can be controlled by two ways, one is to control the opening size of the electric valve 185, and the other is to control the opening and closing frequency of the electric valve 185.

Referring to fig. 5, 6 and 7, the grinding roller 192 is coaxially and rotatably installed in the grinding chamber 1912, a top of the grinding roller 192 may be provided with a hemispherical block or a conical block matching with the grinding roller 192, and the grinding roller 192 may be disposed below the electric valve 185, so that the material in the electric valve 185 may slide down around the top of the grinding roller 192 when falling on the grinding roller 192. A grinding motor 193 is installed in the grinding cylinder 191 and drives the grinding roller 192 to rotate. A grinding space is formed between the peripheral wall of the grinding roller 192 and the grinding chamber 1912. The end face clearance of the grinding space is gradually reduced from top to bottom. It should be noted here that the maximum size of the crushed material is smaller than the end gap at the largest end of the grinding space, thereby facilitating the first time the material enters the grinding drum 191 to enter the entrance of the grinding space. The peripheral wall of the grinding roller 192 is threaded and is used to directionally move the material in the grinding space to the material collection chamber 1913 by rotating the grinding roller 192. After the material after the breakage is thrown into grinding vessel 191, through operation grinding motor 193, make grinding motor 193 order about grinding roller 192 at the uniform velocity and rotate, because set up the screw thread on grinding roller 192, pile up the cubic material of grinding the space entrance originally and receive vertical decurrent effect, constantly move down in grinding the space, in the in-process that moves down, the material of caking receives the rubbing motion of squeeze roll 192 and grinding chamber 1912 inner wall and rolls, it grinds the material of littleer particle diameter to be become, and because at the in-process that moves down, the clearance in grinding the space is littleer and more, can make the material constantly receive further grinding, finally satisfy the powdered material of required particle diameter size. In other embodiments, the depth of the grinding space and the gap size of the grinding space may be adapted to the desired particle size of the powder to be granulated into fish feed, so that powder materials of different particle sizes may be ground.

In this embodiment, a second support frame 202 may be secured within the collection chamber 1913. The grinding motor 193 may be fixed on a side of the support frame away from the grinding roller 192. The top wall of the grinding cylinder 191 at one end of the grinding roller 192 is rotatably connected with the grinding roller 192 through a bearing and a second support frame 202, and the output end of the grinding motor 193 can be fixedly connected with one end of the grinding roller 192. A protective cover may be disposed outside the grinding motor 193 to prevent the grinding motor 193 from being damaged by the ground fine powder.

Since there may be powder particles that are not yet ground while the material is in the grinding space, these powder particles, if present in large quantities and occupying space volume, will interfere with the grinding of other bulk materials. Therefore, in this embodiment, the grinding cylinder 191 may further be provided with a collection channel 1914 therein. A collection channel 1914 is located above the collection chamber 1913 and communicates therewith. The grinding cylinder 191 is located on the inner wall of the grinding chamber 1912 and can be provided with a plurality of through holes 1915 communicated with the collecting channel 1914, and the aperture of each through hole 1915 is the same as the gap size of the minimum end of the grinding space. A plurality of through holes 1915 are distributed circumferentially along the inner wall of the grinding chamber 1912 and then linearly along the axial direction of the grinding chamber 1912. While the material is in the grinding space, the powder particles in the material can directly enter the through holes 1915, then enter the collecting channel 1914 from the through holes 1915, and finally fall into the collecting cavity 1913 in the downward movement process. Thus, the grinding efficiency of the material can be further improved.

In this embodiment, the grinding rollers 192 may be disposed in a circular truncated cone shape, and the cross-sectional radius of the grinding rollers 192 gradually increases from top to bottom. The interior space of the grinding chamber 1912 is cylindrical. Of course, in other embodiments, the grinding roller 192 may be cylindrical. The inner space of the polishing cavity 1912 is circular truncated cone-shaped, and the caliber of the polishing cavity 1912 gradually decreases from top to bottom.

In this embodiment, the grinding mechanism may further include a cleaning assembly for cleaning the plurality of through holes 1915. The cleaning assembly includes a cleaning brush 194 and a lifting unit 195. The cleaning brush 194 is in the shape of a circular tube, and the cleaning brush 194 is coaxially disposed inside the collection passage 1914. The bristles of the cleaning brush 194 are disposed on the side of the cleaning brush 194 facing the grinding roll 192, and the bristles of the cleaning brush 194 can protrude into each of the through holes 1915 (note: the bristles of the cleaning brush 194 are not shown in fig. 4 and 6). The lifting unit 195 is fixed inside the collection passage 1914, and is used to drive the cleaning brush 194 to move in the axial direction of the grinding roller 192. In this embodiment, the lifting unit 195 may be symmetrically disposed within the collection channel 1914, and the lifting unit 195 may be an electric push rod having an extended end fixed to the cleaning brush. In other embodiments, a pneumatic or hydraulic cylinder may be used. The cleaning brush 194 may be periodically lifted and lowered in the collection passage 1914 by controlling the operation of the lifting unit 195. While the grinding mechanism grinds, the cleaning brush 194 periodically scrapes the openings and inner walls of the plurality of through holes 1915, thereby facilitating the discharge of the powdery material in the through holes 1915 from the through holes 1915 to the collection passage 1914, and finally falls into the collection chamber 1913. On the one hand, the ejection of compact efficiency of powdered material can be improved to cleaning brush 194, and on the other hand, cleaning brush 194 can also avoid the through-hole to take place to block up.

And the granulating equipment is used for granulating the powder material generated by the grinding equipment. The granulating equipment can adopt the existing screw granulator and can also adopt a double-roller granulator.

Example 2

Referring to fig. 8 and 9, the present embodiment provides a fish feed production system based on kitchen waste biological treatment. The present embodiment is different from embodiment 1 in that the present embodiment refines the structure of the granulation apparatus based on embodiment 1. In this embodiment, the granulation apparatus includes: the device comprises a granulation box 1, an extrusion mechanism 2, a cleaning mechanism 3, a roller surface monitoring assembly 4 and a controller 5.

The top of the granulation box 1 is provided with a feeding port 101. The powder ground by the grinding device can enter the inside of the granulation tank 1 through the feed opening 101, so as to be extruded and granulated. In this embodiment, the feeding port 101 is formed in a strip shape.

As shown in fig. 10, the pressing mechanism 2 includes a pressing motor 21 and two pressing rollers 22 matched with each other. A pressing motor 21 is mounted on the granulation tank 1 and is used to drive the rotation of the pressing roller 22. The squeezing motor 21 may be an existing speed reduction motor, and may provide a greater torque to the squeezing roller 22 when driven, thereby improving the squeezing effect. When the two squeezing rollers 22 are driven by the squeezing motor 21, the two squeezing rollers 22 may be driven by the two squeezing motors 21, or one motor may be used, and then the two squeezing rollers 22 are driven by some transmission means (e.g., a gear train). The squeeze roller 22 is rotatably installed inside the granulation tank 1. The two squeeze rolls 22 are arranged in parallel with each other in the axial direction, and are aligned at both ends. The tangency of the two squeeze rollers 22 is below the inlet 101. It should be noted here that the rotation directions of the two squeeze rolls 22 are opposite, and the rotation directions of the two squeeze rolls 22 are opposite when viewed from above the squeeze rolls 22; in addition, the two press rolls 22 are substantially tangential with a certain gap, and the respective rotations of the two press rolls do not affect each other. In this embodiment, the axial length of the squeeze roller 22 matches with the extension length of the feeding port 101, and the powder material which is not squeezed enters the granulation box 1 along the elongated feeding port 101, so that the powder material can be distributed between the two squeeze rollers 22 along the axial direction of the squeeze roller 22, thereby avoiding the phenomenon of uneven axial distribution of the powder along the squeeze roller 22 to a certain extent, and further reducing the degree of deformation of the local part of the squeeze roller 22 after long-time use.

In this embodiment, each squeeze roll 22 may have a plurality of dimples 221 formed thereon. There is a one-to-one correspondence between the half ball sockets 221 on the two pressing rollers 22. The plurality of hemispherical dimples 221, which correspond to each other one by one, can form a plurality of spherical pressing spaces by rotating the two pressing rollers 22. When the powder material falls between the two pressing rollers 22, the powder falling between the corresponding two ball sockets is pressed in the spherical pressing space, thereby forming spherical granular material. The extrusion grooves on the extrusion roll 22 in this embodiment are formed in a hemispherical shape, so that the extruded material is a material close to a spherical shape, while in other embodiments, the extrusion grooves may be formed in a cylindrical shape, so that the particles at the extrusion position are close to a cylindrical shape, and the adaptability adjustment can be made according to the production requirement. After the extrusion rollers 22 are used for a long time, the half ball sockets 221 on the two extrusion rollers 22 may be misaligned, thereby deteriorating the granulation quality, and for this, the circumferential angle between the two extrusion rollers 22 and the distance between the two extrusion rollers 22 may be adjusted by using the existing alignment adjustment device (not shown), thereby overcoming the above problems.

As shown in fig. 11, the number of cleaning mechanisms 3 matches the number of squeeze rolls 22. Each cleaning mechanism 3 corresponds to one of the press rolls 22 and is used to clean the roll surface of the press roll 22. Each cleaning mechanism 3 comprises a mounting plate 31, a brush 32, and a telescopic member 33. The fur brush 32 is fixed to the mounting plate 31, and the extension direction of the fur brush 32 and the axial direction of the pressing roller 22 are parallel to each other. The length of the fur brush 32 in the extending direction is not less than the axial length of the press roll 22. The mounting plate 31 is disposed in the granulation tank 1 and can move to make the brush 32 contact with or separate from the surface of the extrusion roller 22, in this embodiment, two sliding grooves 102 can be respectively opened on two sides of the inner wall of each granulation tank 1, and two ends of each mounting plate 31 can be respectively connected with two sliding grooves 102 in a sliding manner. The telescopic member 33 is fixed to the granulation tank 1 and is used to drive the movement of the mounting plate 31. In this embodiment, the telescopic member 33 can be an electric push rod, the extension end of which can pass through the granulation tank 1 and is fixedly connected with the corresponding mounting plate 31, so as to push the mounting plate to slide along the extension direction of the chute 102. In other embodiments, the telescopic member 33 may be replaced by an air cylinder or a hydraulic cylinder, and the specific adopted type may be replaced according to the relevant equipment of the production site.

Because the fish fodder that kitchen garbage made, its powdered raw materials are when carrying out the extrusion granulation process, can remain some clouts on squeeze roll 22, can cause obvious influence to follow-up extrusion granule's shape, structural strength after accumulating the clout of certain degree on squeeze roll 22's roll surface, in order to avoid this kind of influence, this embodiment sets up roll surface monitoring component 4 in granulation box 1, detect to the remaining clout of roll surface, and timely control clearance mechanism 3 cleans squeeze roll 22's roll surface.

In this embodiment, the number of roll surface monitoring assemblies 4 matches the number of squeeze rolls 22. Each roll surface monitoring assembly 4 corresponds to one of the press rolls 22 and is used to monitor the roll surface of the press roll 22. Each roll face monitoring assembly 4 includes an image acquisition module 41, an image processing module 42, and a data transmission module 43. In the present embodiment, the roll surface monitoring unit 4 may be an existing monitoring camera apparatus.

The image acquisition module 41 is installed on the inner wall of the granulation tank 1 and is used for acquiring a corresponding roller surface image in a preset roller surface area in real time. In this embodiment, the roll surface image may be processed by setting the region of interest, and in the image acquired by the image acquisition module 41, only the image about the roll surface is retained, so as to avoid the influence of other captured images (for example, the inner wall of the granulation tank 1) on the subsequent roll surface image processing.

The image processing module 42 is configured to pre-process the roll surface images and extract color features, texture features, and brightness features of each roll surface image. In this embodiment, when the image processing module 42 extracts the color feature of each roll surface image, the roll surface image may be eroded and expanded, and the cavity may be filled to eliminate noise, so as to obtain a color histogram of the roll surface image, where the color histogram is widely applied to image processing. In this embodiment, the roll surface image may be converted into a grayscale to obtain an LBP map, so as to obtain an LBP histogram, where an LBP operator is a global feature and may describe texture features of the image. As for the extraction of the luminance features, it can be extracted by using an existing image recognition technology.

The image processing module 42 is further configured to perform weighted fusion of the color feature, the texture feature, and the luminance feature to form a fused feature. The image processing module 42 obtains the material area image in the roller surface image by fusing the characteristics and calculates the material area S_AIn the collected roll surface area S_BThe calculation formula of the ratio O in (1) is O ═ S_A/S_B. The data transmission module 43 is configured to send the ratio O. In this embodiment, the roll surface may be made of silver gray metal, and since the color, texture and brightness of the residue left on the roll surface are different from those of the roll surface, and the extracted features have different weights for the final fusion features, it is necessary to form the fusion features for a plurality of featuresAnd performing weighted fusion on the individual features to improve the accuracy of the formation of the fused features and further improve the calculation precision of the ratio O.

The controller 5 includes a receiving module 51, a judging module 52, and a feedback module 53. The receiving module 51 is used for receiving the proportion O sent by the roll surface monitoring assembly 4. The proportion O includes proportion one O1 and proportion two O2 corresponding to the two press rolls 22, respectively. The determination module 52 is configured to determine whether the ratio O1 and the ratio O2 are greater than a predetermined ratio, respectively, and when any ratio O is greater than a predetermined ratio, the feedback module 53 controls the corresponding cleaning mechanism 3 to enter the cleaning mode to clean the squeeze roller 22. In this embodiment, the size of the preset ratio can be determined by empirical values, and a plurality of sets of control experiments can be performed, wherein the amount of the residual material on the roll surface in each set of experiments is different, and an appropriate value is finally determined as a reference for the preset ratio by observing the influence on the quality of the extruded particles caused by different residual material amounts.

In this embodiment, when any one of the occupation ratios O is smaller than the preset ratio, the feedback mode controls the corresponding cleaning mechanism 3 to enter the standby mode. The brush 32 is in contact with the surface of the corresponding pressing roller 22 in the cleaning mode, and in the cleaning mode, the brush 32 is in contact with the surface of the pressing roller 22, and since the pressing roller 22 is cleaned while operating, the brush 32 is in a relatively stationary state, and the pressing roller 22 rotates, so that relative movement is generated between the brush 32 and the pressing roller 22, and most of the residual material on the surface of the roller can be scraped. The brush 32 of this embodiment uses soft bristles that contact the ball-and-socket halves 221 on the roll surface and are slightly bent when in contact with the roll surface and slightly pressed. The standby mode is a mode in which the brushes 32 are disengaged from the roll surfaces of the corresponding squeeze rolls 22.

The reason why the ratio O is larger than the predetermined ratio is that the fur brush 32 can effectively clean the squeeze roller 22, but the fur of the squeeze roller 22 is easily worn when rubbed by foreign matters for a long time, which may cause the fur to be thin and the extruded particles to have roller dust. Therefore, the roller surface monitoring assembly 4 is arranged, so that the influence on the quality of subsequent extruded particles caused by residual materials accumulated to a certain amount on the extruding roller 22 can be avoided, the abrasion of the extruding roller 22 caused by the long-time cleaning of the extruding roller 22 by the brush 32 can be avoided, roller leather chips mixed in the extruded particles can be reduced, and the granulation quality of the roller type extruding granulator is further improved.

In this embodiment, the granulation apparatus may further comprise a distance sensing assembly 17. The number of distance sensing assemblies 17 matches the number of cleaning mechanisms 3. Each set of distance sensing assemblies 17 is mounted on one of the mounting plates 31 and is used to detect the real-time distance between that mounting plate 31 and the corresponding squeeze roll 22. The controller 5 is also used for controlling the telescopic member 33 to extend and contract according to the real-time distance. The embodiment also provides a control method for controlling the cleaning mechanism 3 to clean by the controller 5, which comprises the following steps:

(1) acquiring a real-time distance; also acquiring a preset distance between the mounting plate 31 and the corresponding squeeze roller 22 when the cleaning mechanism 3 enters the cleaning mode;

(2) judging whether the cleaning mechanism 3 needs to enter a cleaning mode, if so, executing the step (3);

(3) calculating a difference value between the preset distance and the real-time distance, and inquiring a difference value-expansion amount comparison table according to the difference value to obtain the expansion amount corresponding to the difference value;

(4) the expansion member 33 is controlled to expand and contract according to the expansion amount.

Whether this embodiment needs to clean through judging clearance mechanism 3, then through calculating the difference between real-time distance and the distance of predetermineeing, can realize that brush 32 can be comparatively accurate when getting into clean mode stay in the state with squeeze roll 22 contact to clean the roll surface of squeeze roll 22. When squeeze roll 22 need not clean, brush 32 is kept away from squeeze roll 22, and the two do not contact, can effectively avoid brush 32 to clean squeeze roll 22 that leads to for a long time to squeeze roll 22 and wear, can also reduce the roller scurf that mix with in the extrusion granule, further promoted the granulation quality to roll-type extrusion granulator.

Example 3

Referring to fig. 12, the present embodiment provides a fish feed production system based on kitchen waste biological treatment. In this embodiment, on the basis of embodiment 2, the granulation apparatus may further include a feeding mechanism 6.

Referring to fig. 13 and 14, the feeding mechanism 6 is disposed at the top of the granulation tank 1. The feeding mechanism 6 comprises a feeding hopper 61 and a material homogenizing assembly 62. The interior of the hopper 61 communicates with the inlet 101. The homogenizing assembly 62 is disposed above the feed inlet 101. The refining assembly 62 includes a refining bar 621, a plurality of scraping claws 622, and a drive motor 623. The driving motor 623 is provided on the input hopper 61. One end of the homogenizing rod 621 is fixedly connected with an output shaft of the driving motor 623. In this embodiment, the driving motor 623 may be a stepping motor, and the controller 5 controls the output end of the driving motor 623 to rotate at a predetermined rotation speed. The faster the preset rotation speed, the higher the blanking efficiency, and vice versa.

A plurality of material stirring claws 622 can be fixed on the homogenizing rod 621 along the circumferential direction of the homogenizing rod 621 at equal intervals, and when the homogenizing rod 621 rotates and one of the material stirring claws 622 extends into the feeding port 101, two material stirring claws 622 adjacent to the material stirring claw 622 can just contact with the inner wall of the feeding hopper 61 and form a blocking area. It should be noted that the contact between the pusher dog 622 and the feeding hopper 61 means that there is no relative friction between the two and the powder does not fall from between the two.

In this embodiment, the powder material to be extruded is stacked in the feeding hopper 61, and the driving motor 623 is controlled to drive the plurality of material stirring claws 622 to rotate according to the preset rotating speed by the material homogenizing rod 621. The section of the claw 622 may be crescent, with one concave end and the other convex end. Therefore, the concave surface of each material poking claw 622 pokes a certain amount of powder material before extending into the material inlet 101, and then pokes a certain amount of powder material into the material inlet 101 and falls into the extruding mechanism 2. Since when the refining bar 621 rotates and one of the material shifting claws 622 extends into the material inlet 101, the two material shifting claws 622 adjacent to the material shifting claw 622 can just contact with the inner wall of the material inlet 61 to form a blocking area, and the powder material in the blocking area cannot easily fall into the material inlet 101. Consequently when even material pole 621 drives a plurality of claw 622 dwangs of dialling, pile up all the other powder materials inside going into hopper 61 and do not stir and can not fall into pan feeding mouth 101 to realized even unloading, effectively controlled the ration and all with the distribution of the powder material that gets into extrusion mechanism 2, and then improved extrusion mechanism 2's extrusion quality.

Example 4

Referring to fig. 15 and 16, the present embodiment provides a fish feed production system based on kitchen waste biological treatment. In this embodiment, on the basis of embodiment 2 or embodiment 3, the granulation apparatus may further include a first collecting box 8, a second collecting box 9, and a material guiding plate 10.

The first collecting box 8 is positioned below the material falling point of the extruding mechanism 2, and the collecting box can be movably arranged in the granulation box 1, so that the collecting box can be conveniently taken out from the inside of the granulation box 1 when the collecting box is full of storage.

Two sides of the granulation box 1 can be respectively provided with an opening 103. The material guide plates 10 may be provided in two numbers, and are all disposed in the granulation tank 1. One end of each material guide plate 10 is a material receiving end, and the other end is a material discharging end. The receiving end of each guide plate 10 is used for receiving excess material generated when the excess material is cleaned by one of the cleaning mechanisms 3. The discharge end of each guide plate 10 is inclined downward and extends out of an opening one 103. Two collecting boxes 9 are arranged and are respectively fixed on two sides of the outside of the granulation box 1. The two second collecting boxes 9 are respectively positioned below the material falling points at the discharging ends of the two material guide plates 10 and are used for collecting excess materials.

In this embodiment, the cleaning mechanism 3 can clean the surface of the squeeze roller 22 at a proper time, and the residual materials on the surface of the roller are separated from the surface of the roller and fall down through the cleaning of the brush 32, while the embodiment adds the material guiding plate 10 for receiving the fallen residual materials, so as to guide the residual materials from the granulation box 1 to the collecting box 9 through the opening one 103. And because the biochemical properties of the excess materials in the whole extrusion process and the cleaning process can not be obviously changed, the excess materials can be timely collected and recycled, thereby avoiding waste and further conforming to the resource policy.

Example 5

Referring to fig. 17 and 18, the present embodiment provides a fish feed production system based on kitchen waste biological treatment. This embodiment is based on embodiment 2 or embodiment 3, and the granulation apparatus may further include a screen 11, a vibration motor 12, a third collection tank 13, and a fourth collection tank 14.

A screen 11 is installed in the granulation tank 1 below the pressing mechanism 2 and the cleaning mechanism 3. One end of the granulation box 1 can be provided with a second opening 104. One end of the screen mesh 11 extends out of the second opening 104. In this embodiment, the height of the second opening 104 is greater than that of the screen 11, which not only facilitates the screen 11 to protrude, but also facilitates the material on the screen 11 to be discharged out of the granulation tank 1 through the second opening 104. The vibrating motor 12 is installed on the screen mesh 11 and is used for moving the material on the screen mesh 11 to one end of the screen mesh 11 extending out of the second opening 104 in a single direction through vibration. . The third collecting box 13 is arranged in the granulation box 1 and is positioned below the material falling point of the sieve holes of the sieve mesh 11. The collecting box IV 14 is arranged at one side outside the granulating box 1 and is positioned below a material falling point at one end of the screen mesh 11, which extends out of the opening II 104.

The inner wall of the granulation box 1 can be respectively and fixedly connected with at least four supporting blocks 15. A damping spring 16 may be fixed to each support block 15. The bottom of the screen 11 may be fixed with a plurality of damper springs 16.

In this embodiment, the material discharged from the extruding mechanism 2 and the cleaning mechanism 3 is partially extruded granular material, and the granular material can be further refined and packaged to finally become finished fish feed. The other part is the residual materials cleaned by the cleaning mechanism 3 and the powder which is not extruded and formed by the extruding mechanism 2, when the residual materials fall on the screen mesh 11, a directional vibration wave is formed on the screen mesh 11 through the vibration of the vibration motor 12, and some large residual materials are directly vibrated into small blocks due to the fact that the large residual materials do not have the stability of spherical particles and fall into the collecting box 13 together with other powder from the sieve holes on the screen mesh 11. The granular material retained above the screen 11, which is larger than the preset aperture of the screen 11, is retained on the screen 11 and gradually moves to the second opening 104, and finally falls into the fourth collection box 14.

Therefore, this embodiment carries out a preliminary screening to the material that extrusion mechanism 2 and clearance mechanism 3 were derived, can filter most powder and clout etc. and the material that does not meet the requirements to improved the yields, saved subsequent fine screening and consumed the time cost.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A fish feed production system based on kitchen waste biological treatment, which comprises:

a crushing device for crushing a material to be treated;

the extrusion dehydration equipment is used for extruding and dehydrating the materials crushed by the crushing equipment;

the biochemical reaction cabin is used for carrying out microbial treatment on the material output by the dehydration extrusion equipment;

the drying equipment is used for drying the material subjected to the microbial treatment in the biochemical reaction cabin;

the grinding equipment is used for grinding the materials dried by the drying equipment;

the granulating equipment is used for granulating the powder material generated by the grinding equipment;

characterized in that, the milling equipment includes:

the crushing mechanism is used for crushing the material dried by the drying equipment; the crushing mechanism comprises a crushing barrel (181), a crushing motor (182), a cutting knife (183) and a crushing shaft (184); the crushing shaft (184) is coaxially and rotatably arranged inside the crushing barrel (181); a crushing motor (182) is arranged on the crushing barrel (181) and is used for driving a crushing shaft (184) to rotate; the cutting knives (183) are arranged in a plurality, and the cutting knives (183) are spirally fixed on the crushing shaft (184) along the axial direction of the crushing shaft (184);

the grinding mechanism is used for grinding the material which is crushed by the crushing mechanism; the grinding mechanism comprises a grinding cylinder (191), a grinding roller (192) and a grinding motor (193); the interior of the grinding cylinder (191) is sequentially divided into a feeding cavity (1911), a grinding cavity (1912) and a material collecting cavity (1913) from top to bottom, and the material collecting cavity (1913), the grinding cavity (1912) and the feeding cavity (1911) are coaxially arranged and are communicated with one another; an abrasive roll (192) is coaxially and rotatably mounted in the abrasive chamber (1912); the grinding motor (193) is arranged in the grinding cylinder (191) and is used for driving the grinding roller (192) to rotate; a grinding space is formed between the peripheral wall of the grinding roller (192) and the grinding cavity (1912); the end surface clearance of the grinding space is gradually reduced from top to bottom; the peripheral wall of the grinding roller (192) is provided with threads and is used for enabling the materials in the grinding space to be directionally moved to the material collecting cavity (1913) by rotating the grinding roller (192).

2. The kitchen waste biological treatment-based fish feed production system according to claim 1, characterized in that the crushing mechanism further comprises an electrically operated valve (185); an electric valve (185) is arranged in an outlet of the crushing barrel (181), and the outlet of the crushing barrel (181) is communicated with a feeding cavity (1911) of the grinding barrel (191).

3. The kitchen waste biological treatment-based fish feed production system according to claim 1, wherein a collection channel (1914) is further formed inside the grinding cylinder (191); the collecting channel (1914) is positioned above the collecting cavity (1913) and is communicated with the collecting cavity; the grinding cylinder (191) is positioned on the inner wall of the grinding cavity (1912) and is provided with a plurality of through holes (1915) communicated with the collecting channel (1914), and the aperture of each through hole (1915) is the same as the size of the gap at the minimum end of the grinding space.

4. The kitchen waste biological treatment-based fish feed production system according to claim 3, characterized in that the grinding roller (192) is cylindrical; the inner space of the grinding cavity (1912) is in a circular truncated cone shape, and the caliber of the grinding cavity (1912) is gradually reduced from top to bottom.

5. The kitchen waste biological treatment-based fish feed production system according to claim 3, wherein the grinding roller (192) is in a circular truncated cone shape, and the section radius of the grinding roller (192) is gradually increased from top to bottom; the inner space of the grinding chamber (1912) is cylindrical.

6. The kitchen waste biological treatment-based fish feed production system according to claim 5, characterized in that the grinding mechanism further comprises a cleaning assembly for cleaning the plurality of through holes (1915); the cleaning assembly comprises a cleaning brush (194) and a lifting unit (195); the cleaning brush (194) is in a circular tube shape, and the cleaning brush (194) is coaxially arranged inside the collecting channel (1914); the bristles of the cleaning brush (194) are arranged on one side, facing the grinding roller (192), of the cleaning brush (194), and the bristles of the cleaning brush (194) can extend into each through hole (1915); an elevating unit (195) is fixed inside the collecting channel (1914) and is used for driving the cleaning brush (194) to move along the axial direction of the grinding roller (192).

7. The kitchen waste biological treatment-based fish feed production system according to claim 1, wherein said pelleting equipment comprises:

the top of the granulating box (1) is provided with a feeding port (101);

the extrusion mechanism (2) comprises an extrusion motor (21) and two extrusion rollers (22) matched with each other; the extrusion motor (21) is arranged on the granulation box (1) and is used for driving the extrusion roller (22) to rotate; the extrusion roller (22) is rotatably arranged in the granulating box (1); the axial directions of the two extrusion rollers (22) are arranged in parallel, and the two ends are aligned; the tangency position of the two extrusion rollers (22) is positioned below the feeding port (101);

cleaning mechanisms (3) the number of which matches the number of the squeezing rollers (22); each cleaning mechanism (3) corresponds to one of the extrusion rollers (22) and is used for cleaning the roller surface of the extrusion roller (22); each cleaning mechanism (3) comprises a mounting plate (31), a brush (32) and a telescopic piece (33); the hairbrush (32) is fixed on the mounting plate (31), and the extending direction of the hairbrush (32) is parallel to the axial direction of the extrusion roller (22); the length of the brush (32) along the extending direction is not less than the axial length of the squeezing roller (22); the mounting plate (31) is arranged in the granulating tank (1) and can move to enable the brush (32) to contact or separate from the roller surface of the extrusion roller (22); the telescopic piece (33) is fixed on the granulation box (1) and used for driving the mounting plate (31) to move;

roll surface monitoring assemblies (4) the number of which is matched with the number of the extrusion rolls (22); each roll surface monitoring assembly (4) corresponds to one of the extrusion rolls (22) and is used for monitoring the roll surface of the extrusion roll (22); each roll surface monitoring assembly (4) comprises an image acquisition module (41), an image processing module (42) and a data transmission module (43); the image acquisition module (41) is arranged on the inner wall of the granulation box (1) and is used for acquiring a corresponding roller surface image in a preset roller surface area in real time; the image processing module (42) is used for preprocessing the roller surface images and respectively extracting the color feature, the texture feature and the brightness feature of each roller surface image; the image processing module (42) is further configured to perform weighted fusion of the color feature, the texture feature, and the luminance feature to form a fused feature; the image processing module (42) acquires a material area image in the roller surface image through the fusion characteristics and calculates a material area S_AIn the collected roll surface area S_BThe calculation formula of the ratio O in (1) is O ═ S_A/S_B(ii) a The data transmission module (43) is used for sending the occupation ratio O; and

a controller (5) comprising a receiving module (51), a judging module (52) and a feedback module (53); the receiving module (51) is used for receiving the occupation ratio O sent by the roll surface monitoring component (4); the ratio O comprises a ratio one O1 and a ratio two O2 corresponding to the two squeeze rollers (22), respectively; the judging module (52) is used for respectively judging whether the proportion one O1 and the proportion two O2 are larger than a preset proportion, and when any proportion O is larger than a preset proportion, the feedback module (53) controls the corresponding cleaning mechanism (3) to enter a cleaning mode so as to clean the squeezing roller (22).

8. The kitchen waste biological treatment-based fish feed production system according to claim 7, wherein when any one of said occupancy ratios O is less than said preset ratio, said feedback mode controls the corresponding cleaning mechanism (3) to enter a standby mode; the cleaning mode is that the brush (32) is contacted with the roll surface of the corresponding extrusion roll (22); the standby mode is that the brushes (32) are separated from the roller surfaces of the corresponding squeezing rollers (22).

9. The kitchen waste biological treatment-based fish feed production system according to claim 1, wherein a first support frame (201) is fixed in the crushing cylinder (181); the top end of the crushing shaft (184) is rotationally connected with the top wall of the crushing barrel (181), and the bottom end of the crushing shaft (184) is rotationally connected with the first support frame (201); the crushing motor (182) is arranged at the top of the crushing barrel (181), and the output end of the crushing motor (182) penetrates through the top wall of the crushing barrel (181) and is fixed with the crushing shaft (184).

10. The kitchen waste biological treatment-based fish feed production system according to claim 1, wherein a second support frame (202) is fixed in the material collection cavity (1913); the grinding motor (193) is fixed on one side of the support frame far away from the grinding roller (192); the top wall of a grinding cylinder (191) at one end of the grinding roller (192) is rotatably connected with the grinding roller (192) through a bearing and a second support frame (202), and the output end of a grinding motor (193) is fixedly connected with one end of the grinding roller (192).