CN111791370B - Water-resistant gypsum board production system and production method - Google Patents

Water-resistant gypsum board production system and production method Download PDF

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Publication number
CN111791370B
CN111791370B CN202010618014.5A CN202010618014A CN111791370B CN 111791370 B CN111791370 B CN 111791370B CN 202010618014 A CN202010618014 A CN 202010618014A CN 111791370 B CN111791370 B CN 111791370B
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water
pipe
cavity
gypsum
communicated
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CN111791370A (en
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李明明
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Gucheng New Building Materials Ltd
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Gucheng New Building Materials Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/38—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions wherein the mixing is effected both by the action of a fluid and by directly-acting driven mechanical means, e.g. stirring means ; Producing cellular concrete
    • B28C5/381—Producing cellular concrete
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/38—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions wherein the mixing is effected both by the action of a fluid and by directly-acting driven mechanical means, e.g. stirring means ; Producing cellular concrete
    • B28C5/381—Producing cellular concrete
    • B28C5/386—Plants; Systems; Methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/38—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions wherein the mixing is effected both by the action of a fluid and by directly-acting driven mechanical means, e.g. stirring means ; Producing cellular concrete
    • B28C5/381—Producing cellular concrete
    • B28C5/386—Plants; Systems; Methods
    • B28C5/388—Methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/0007—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/12—Supplying or proportioning liquid ingredients
    • B28C7/126—Supply means, e.g. nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/12—Supplying or proportioning liquid ingredients
    • B28C7/126—Supply means, e.g. nozzles
    • B28C7/128—Nozzles; Valves; Valve-actuating means
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B11/00—Calcium sulfate cements
    • C04B11/02—Methods and apparatus for dehydrating gypsum
    • C04B11/022—Simultaneous dehydrating of gypsum and slaking of lime

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Accessories For Mixers (AREA)

Abstract

The embodiment of the invention discloses a water-resistant gypsum board production system and a production method, wherein the system comprises a mixing device, a gypsum material adding device, a waterproof agent adding device, a clear water adding device and a processing aid adding device which are communicated with a feeding hole of the mixing device, and a surfactant adding device communicated with a discharging hole of the mixing device; the gypsum material adding device comprises a gypsum bearing cavity and a heating assembly which is arranged outside the gypsum bearing cavity and used for heating the gypsum bearing cavity, the bottom end of the gypsum bearing cavity is communicated with the feeding hole, the top end of the gypsum bearing cavity is communicated with the bottom surface of the mixing device through a steam collecting unit, and the steam collecting unit is used for bottom blowing of a mixture in the mixing device; the discharge port at least comprises a discharge port and a charging port, and the surfactant adding device is communicated with the charging port. The method has the advantages that material agglomeration is avoided, the mixed material has good uniform dispersion, the prepared gypsum board has dense bubbles, and the water resistance is effectively improved.

Description

Water-resistant gypsum board production system and production method
Technical Field
The embodiment of the invention relates to the field of gypsum board production processes, and particularly relates to a water-resistant gypsum board production system and a production method.
Background
The water-resistant paper-surface gypsum board is made up by using building gypsum as main raw material and adding a certain quantity of water-proofing agent, surfactant and other assistants into the gypsum core material to make the gypsum possess a certain water-proofing property.
In the production process of the gypsum board, the added raw materials mainly comprise the calcined gypsum, and the calcined gypsum is easy to absorb water and damp under the conventional conditions, so that the calcined gypsum is not easy to store, and in the actual production process, the calcined gypsum is often required to be dehydrated at high temperature before use, so that the operation is complex, the production efficiency is reduced, the energy loss in the high-temperature dehydration process is large, and the production cost is further improved. Meanwhile, a waterproof agent and a surfactant are required to be added in the production process of the gypsum board, the waterproof agent and the surfactant are directly mixed with the gypsum, water and the like in a conventional mode and mixed in a mixing device, and the waterproof agent and the surfactant are usually hydrophobic or contain oleophylic groups in the structure, so that the waterproof agent and the surfactant are easy to repel water in the mixing process to cause agglomeration, and finally, the obtained gypsum slurry has poor material dispersibility and causes the problem of unstable board quality.
Disclosure of Invention
To this end, the embodiment of the invention provides a production system and a production method of a water-resistant gypsum board, wherein a gypsum material adding device is directly arranged to comprise a heating component, thereby heating the gypsum materials, the whole operation process can be carried out in the same production system by combining the processes of mixing materials and the like, greatly improving the production efficiency, meanwhile, the steam generated after heating is collected and the mixture in the mixing device is subjected to bottom blowing, thereby not only effectively utilizing the heat energy, and the molecular motion in the mixture is accelerated, the uniform dispersion is improved, the waterproof agent and the surfactant are further added near the feed inlet and the discharge outlet respectively, the phenomenon of agglomeration of the waterproof agent and the surfactant is avoided, and simultaneously, the surfactant is added near the discharge port, so that the stability of the foaming process is guaranteed not to be damaged, the compactness of the obtained gypsum board interface is further improved, and the water resistance of the gypsum board is effectively improved.
In order to achieve the above object, an embodiment of the present invention provides the following:
in one aspect of the embodiment of the invention, a water-resistant gypsum board production system is provided, which comprises a mixing device provided with a feeding hole and a discharging hole, a gypsum material adding device, a waterproof agent adding device, a clear water adding device and a processing aid adding device which are communicated with the feeding hole of the mixing device, and a surfactant adding device communicated with the discharging hole of the mixing device; wherein,
the gypsum material adding device comprises a gypsum bearing cavity and a heating assembly which is arranged outside the gypsum bearing cavity and used for heating the gypsum bearing cavity, the bottom end of the gypsum bearing cavity is communicated with the feeding hole, the top end of the gypsum bearing cavity is communicated with the bottom surface of the mixing device through a steam collecting unit, and the steam collecting unit is used for bottom blowing of a mixture in the mixing device;
the discharge port at least comprises a discharge port and a charging port, and the surfactant adding device is communicated with the charging port.
As a preferable scheme of the invention, the mixing device at least comprises a mixing cavity and a discharging channel formed by extending outwards from the side surface of the mixing cavity along the horizontal direction, the discharging port is positioned on the end surface of the discharging channel far away from the mixing device, and a through charging port is formed on the side surface of the discharging channel;
the feed inlet is positioned on the top surface of the mixing cavity.
As a preferable scheme of the invention, the steam collecting unit comprises a steam channel and a gas-liquid separator which are communicated with each other from the gypsum bearing cavity to the mixing device, the clear water adding device at least comprises a heat exchanger, a liquid outlet of the gas-liquid separator is communicated with a hot fluid inlet of the heat exchanger, and a hot fluid outlet is communicated with the gypsum bearing cavity;
and a gas outlet in the gas-liquid separator is communicated with the mixing device through a throttle valve.
As a preferred scheme of the invention, the gypsum bearing cavity comprises a first cavity and a second cavity which are sequentially formed from top to bottom, and the first cavity and the second cavity are separated by a partition board with a through hole;
the upper surface of the isolation plate is also provided with a drainage groove with a part of the drainage groove being sunken downwards, the side wall of the first cavity extends inwards to form a drainage tube communicated with a hot fluid outlet of the heat exchanger, and one end of the drainage tube, which is far away from the hot fluid outlet, extends into the drainage groove.
As a preferable scheme of the invention, an air-entrapping ring pipe used for ventilating the mixing device is further formed on the outer peripheral surface of the charging port in a surrounding manner, and the air-entrapping ring pipe is communicated with the gas providing unit through a throttle valve;
the air charging annular pipe is provided with vent holes which are distributed at equal intervals along the circumferential direction.
As a preferable scheme of the present invention, the bottom blowing holes are communicated with the bottom surfaces of the mixing cavity and the discharging channel, and the aperture of the bottom blowing hole on the discharging channel is smaller than the aperture of the bottom blowing hole on the mixing cavity.
As a preferred scheme of the invention, the waterproof agent adding device comprises a first water conveying pipe and a first feeding pipe, wherein a first water conveying cavity is formed inside the first water conveying pipe and can be arranged in a self-rotating manner, the first feeding pipe is sleeved outside the first water conveying pipe, an accommodating cavity is formed between the first feeding pipe and the first water conveying pipe, a penetrating water outlet assembly is formed on the side wall of the first water conveying pipe, an opening is formed on the side wall of the accommodating cavity below the water outlet assembly, an emulsifying structure is communicated with the opening, an extrusion disc is further arranged at the bottom of the first water conveying pipe, and the extrusion disc and at least part of the opening are positioned on the same horizontal plane;
the inner wall of the first water pipe is hermetically connected with a sealing block which can move on the inner wall of the first water pipe along the vertical direction, the sealing block is connected with a telescopic rod, and one end of the telescopic rod, far away from the sealing block, is connected with a first air pump for pushing the telescopic rod to move;
the outer wall of the first water delivery pipe extends along the circumferential direction to form a circle of annular bottom plate, the telescopic rod extends outwards to form an annular cylinder wall, and the annular cylinder wall and the bottom plate are matched to form a material containing cavity with an opening on the upper surface.
As a preferred embodiment of the present invention,
the surfactant adding device comprises a second water pipe and a second feeding pipe which are sequentially sleeved from inside to outside, a second water conveying cavity for containing water is formed inside the second water pipe, a pressurizing assembly capable of moving along the inner wall of the second water pipe is further connected to the inner side wall of the second water pipe in a sealing mode, a feeding cavity for adding a surfactant is formed between the second water pipe and the second feeding pipe, and the bottom end of the feeding cavity is communicated with an air-entrapping emulsification structure; wherein,
the outer side wall of the second water conveying pipe extends outwards to form a plurality of water outlet through pipes which are positioned in the feeding cavity and have downward openings, and the water outlet through pipes are arranged at equal intervals along the circumferential direction of the second water conveying pipe;
and a pressurizing channel for opening or closing the water outlet through pipe is further arranged at the water inlet of the water outlet through pipe, and when the water pressure in the second water conveying pipe is greater than a preset value, the pressurizing channel is opened.
In another aspect of the embodiments of the present invention, there is also provided a method for producing a water-resistant gypsum board using the production system described above, including:
s100, heating the gypsum material adding device until the steam flow in the steam collecting unit reaches a preset value;
s200, introducing hot air into a mixing device for bottom blowing, and adding gypsum materials, clear water, a waterproof agent and a processing aid into the mixing device from a feeding hole for mixing to obtain a premix;
s300, pushing the premix towards a discharge port of the mixing device, adding a surfactant through a feeding port when the premix is pushed to the discharge port, and blowing air towards the mixing device from the peripheral surface of the feeding port.
In a preferred embodiment of the present invention, in step S200, the adding process further comprises mixing the waterproofing agent with pressurized water in advance, and then blending with the gypsum material, clean water and the processing aid.
In a preferred embodiment of the present invention, the surfactant is a surfactant paste mixed with pressurized water and compressed air.
The embodiment of the invention has the following advantages:
1) the gypsum material adding device is directly arranged to comprise the gypsum bearing cavity and the heating assembly, the gypsum is converted into the calcined gypsum in a heating mode, and the conversion degree is judged by measuring the flow of the steam in the communicated steam collecting unit, so that the production efficiency is effectively improved, and the stability of the product is greatly ensured;
2) the introduction of the steam collecting unit realizes the effective utilization of heat energy, and the heat energy is used for bottom blowing the mixture, so that the conversion from the heat energy to potential energy is realized, the molecular motion rate is improved, and the uniform dispersion of the mixed materials is further improved;
3) the surfactant is added near the discharge port, so that the surfactant and the waterproof agent are added in different spaces step by step, the foaming stability of the surfactant is improved, the agglomeration of the surfactant and the waterproof agent is avoided, and the uniform dispersibility of the mixed material is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic diagram of a water-resistant gypsum board production system provided by an embodiment of the present invention;
FIG. 2 is a partial top view of a spacer provided in accordance with an embodiment of the present invention;
FIG. 3 is a schematic structural view of a waterproofing agent adding apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a surfactant adding apparatus according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a rotating disk according to an embodiment of the present invention;
fig. 6 is a schematic partial structure view of a material guide plate according to an embodiment of the present invention;
FIG. 7 is a schematic view of a partial structure of a feeding tube according to an embodiment of the present invention;
FIG. 8 is a partial structural view of part A of FIG. 3 or FIG. 4;
fig. 9 is a schematic partial structural view of an elastic membrane according to an embodiment of the present invention.
In the figure:
1-a mixing device; 2-a gypsum material adding device; 3-a waterproofing agent adding device; 4-clear water adding device; 5-a processing aid adding device; 6-surfactant adding device; 7-a steam collection unit;
11-a feed inlet; 12-a discharge hole; 13-a mixing chamber; 14-a discharge channel; 15-bottom blowing hole;
121-outlet port; 122-a feed port;
21-a gypsum bearing cavity; 22-a heating assembly;
211-a first cavity; 212-a second cavity; 213-a separation plate; 214-through hole; 215-drainage groove; 216-a draft tube;
41-heat exchanger;
411-hot fluid inlet; 412-hot fluid outlet;
61-air-filling ring pipe;
71-a steam channel; 72-gas-liquid separator;
721-a liquid outlet; 722-a gas outlet;
81-a first water delivery pipe; 82-a first feed tube; 83-an emulsifying structure; 84-an extrusion disc;
811-a first water delivery lumen; 812-a water outlet assembly; 813-base plate; 814-crushing knife roll;
8121-a first tube; 8122-a second tube; 8123-enclosure baffle; 8124-water outlet; 8125-elastic baffle plate; 8126-elastic diaphragm; 8127-a through-hole;
821-an accommodating cavity; 822-an opening; 823-extension section;
841-rotating rod; 842-rotating disc;
8421-arc drainage frame; 8422-beater bars; 8423-a main runner; 8424-auxiliary launders; 8425-scraper;
851-a sealing block; 852-a telescopic rod; 853-a first air pump; 854 — an annular cylinder wall; 855-material containing cavity; 856-material guide plates;
8561-ribs;
91-a second water delivery pipe; 92-a second feed tube; 93-a pressing assembly; 94-air-entrapping emulsification structure;
911-a second water delivery cavity; 912-water outlet through pipe;
9121-a third tube; 9122-a fourth tube;
921-feeding chamber; 922-a guide groove;
931-pressing block; 932-a pump rod; 933-second air pump; 934-cylinder body;
941-emulsion pump; 942-an air entrainment assembly;
9421-gas supply unit; 9422-ring air-entrapping spout.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. 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.
As shown in fig. 1 and 2, the present invention provides a water-resistant gypsum board production system, which comprises a mixing device 1 formed with a feed inlet 11 and a discharge outlet 12, a gypsum material adding device 2, a waterproof agent adding device 3, a clear water adding device 4 and a processing aid adding device 5 communicated with the feed inlet 11 of the mixing device 1, and a surfactant adding device 6 communicated with the discharge outlet 12 of the mixing device 1; wherein,
the gypsum material adding device 2 comprises a gypsum bearing cavity 21 and a heating assembly 22 which is arranged on the outer side of the gypsum bearing cavity 21 and used for heating the gypsum bearing cavity 21, the bottom end of the gypsum bearing cavity 21 is communicated with the feeding hole 11, the top end of the gypsum bearing cavity 21 is communicated with the bottom surface of the mixing device 1 through a steam collecting unit 7, and the steam collecting unit 7 is used for bottom blowing of a mixture in the mixing device 1;
the discharge port 12 at least comprises a discharge port 121 and a charging port 122, and the surfactant adding device 6 is communicated with the charging port 122.
The arrangement leads the surfactant adding device 6 to be communicated with the discharge hole 12, thereby avoiding the problem that the surfactant adding device and the waterproof agent are easy to agglomerate because the surfactant adding device and the waterproof agent are directly contacted at the feed hole 11; meanwhile, the waterproof agent is mixed with gypsum, water and the like to a certain extent in the earlier stage, and is fed through a feeding port 122 arranged on the discharge port 12 on the basis, so that the foaming stability of a surfactant system is effectively ensured, the compactness of a gypsum board interface is further improved, the using amount of the surfactant system can be reduced on the premise of ensuring the foaming effect, and the influence of the change of surface tension on the mixing effect caused by adding a large amount of surfactant is further avoided; simultaneously bear the weight of the chamber 21 through the gypsum and directly heat to steam that produces after the heating is collected and is blown from the bottom to compounding device 1, has not only improved production efficiency, and the effective conversion of energy, the establishment of the whole system of collection and utilization, further guarantees the homodisperse of compounding, improves the quality of whole gypsum panel.
Of course, in a further preferred embodiment, in order to enable the surfactant adding device 6 to better achieve mixing uniformly during the adding process through the discharge hole 12, the mixing device 1 at least comprises a mixing cavity 13 and a discharge channel 14 formed by extending outwards from the side surface of the mixing cavity 13 along the horizontal direction, the discharge port 121 is located on the end surface of the discharge channel 14 far away from the mixing device 1, and a through feeding port 122 is formed on the side surface of the discharge channel 14; the feed inlet 11 is located on the top surface of the mixing cavity 13. Of course, a gap may be provided between the inlet port 122 and the outlet port 121 to allow for better even mixing of the foaming agent system and to improve the foaming properties of the gypsum board monolith.
In another preferred embodiment of the present invention, from the viewpoint of further increasing the molecular movement rate, the steam collecting unit 7 may be further configured to include a steam passage 71 and a gas-liquid separator 72, which are arranged to communicate with the mixing device 1 from the gypsum bearing chamber 21, and the steam passage and the gas-liquid separator 72 are separated by the gas-liquid separator 72 to obtain a high-temperature gas phase and a high-temperature liquid phase, the high-temperature liquid phase is further communicated with the heat exchanger 41 and exchanges heat with the clean water for mixing flowing through the heat exchanger 41, the high-temperature liquid phase after heat exchange is changed into a low-temperature liquid phase, and further flows into the gypsum bearing chamber 21 for secondary heating, so as to realize circulation of the liquid, and from another viewpoint, the problem that the crystal water in the gypsum is dehydrated too much to become calcined gypsum due to long-time heating in the gypsum bearing chamber 21 is also avoided, and the high-temperature liquid phase collected here is not directly added into the mixing device 1 for mixing, only heat exchange is carried out, and the condition that the quality of the plate is poor due to impurities in a high-temperature liquid phase is avoided. High-temperature gas phase is further pressurized through a throttle valve and is introduced into the mixing device 1 to realize bottom blowing through the bottom of the mixing device 1, so that the molecular motion rate of the mixture in the whole mixing device 1 is accelerated, and the dispersibility of the mixture is ensured.
Of course, it should be further noted that the side wall of the gypsum bearing cavity can be communicated with a gypsum feeding channel, so that the continuous feeding can be realized after the gypsum of the previous batch is processed, and the continuous operation can be realized. Of course, the gypsum material adding device 2, the waterproof agent adding device 3, the clear water adding device 4 and the processing aid adding device 5 can be respectively provided with valves between the mixing device 1 according to actual conditions, so as to realize the opening or closing of the feeding passage according to the conditions.
Further, in order to avoid the influence of the recycled low-temperature liquid phase on the gypsum, the gypsum bearing cavity 21 includes a first cavity 211 and a second cavity 212 sequentially formed from top to bottom, and the first cavity 211 and the second cavity 212 are separated by a partition plate 213 with a through hole 214 formed therein;
the upper surface of the partition plate 213 is further formed with a drainage groove 215 which is partially recessed downward, the sidewall of the first cavity 211 is inwardly extended to form a drainage tube 216 which is communicated with a hot fluid outlet 412 of the heat exchanger 41, and one end of the drainage tube 216, which is far away from the hot fluid outlet 412, is extended into the drainage groove 215.
In another preferred embodiment of the present invention, in order to enable the surfactant adding device 6 to effectively flush the surfactant system into the mixing device 1, and avoid the surfactant system from being only melted into the peripheral part of the mixture, the outer peripheral surface of the charging port 122 is further surrounded with a gas-filling loop 61 for ventilating the mixing device 1, and the gas-filling loop 61 is communicated with the gas supply unit through a throttle valve;
the air-entrapping ring pipe 61 is formed with vent holes arranged at equal intervals in the circumferential direction.
In a more preferred embodiment, the bottom blowing holes 15 are communicated with the bottom surfaces of the mixing cavity 13 and the discharging channel 14, and the diameter of the bottom blowing holes 15 on the discharging channel 14 is smaller than that of the bottom blowing holes 15 on the mixing cavity 13.
The water repellent agent adding apparatus 3 may be a water repellent agent system, that is, a water-emulsified water repellent agent, and similarly, the surfactant system may be a surfactant agent emulsified by mixing water with compressed air.
Specifically, as shown in fig. 3 and fig. 5 to fig. 9, the waterproof agent adding device 3 includes a first water pipe 81 which is formed with a first water conveying cavity 811 inside and is capable of rotating, and a first feeding pipe 82 which is sleeved outside the first water pipe 81, an accommodating cavity 821 is formed between the first feeding pipe 82 and the first water pipe 81, a through water outlet assembly 812 is formed on a side wall of the first water pipe 81, an opening 822 is formed on a side wall of the accommodating cavity 821 located below the water outlet assembly 812, an emulsifying structure 83 is communicated with the opening 822, an extruding tray 84 is further disposed at the bottom of the first water pipe 81, and the extruding tray 84 and at least a part of the opening 822 are located on the same horizontal plane;
a sealing block 851 capable of moving on the inner wall of the first water pipe 81 along the vertical direction is hermetically connected to the inner wall of the first water pipe 81, an expansion link 852 is connected to the sealing block 851, and a first air pump 853 for pushing the expansion link 852 to move is connected to one end, far away from the sealing block 851, of the expansion link 852;
a ring-shaped bottom plate 813 is formed on the outer wall of the first water pipe 81 in an extending manner along the circumferential direction, an annular cylinder wall 854 is formed on the telescopic rod 852 in an extending manner, and the annular cylinder wall 854 is matched with the bottom plate 813 to form a material containing cavity 855 with an open mouth on the upper surface.
Through such mode of setting, when promoting telescopic link 852, the water in first water delivery chamber 811 extrudes through apopore subassembly 812 through the loading of pressure, meanwhile, annular cylinder wall 854 moves down, flourishing material chamber 855 volume diminishes, the waterproofing agent that wherein holds overflows, and with water mix the back get into hold the chamber 821, after the whipping homogeneity through extrusion dish 84 simultaneously, by extrusion to opening 822, get into emulsification structure 83 after the further extrusion transmission of opening 822 and emulsify, thereby guarantee the improvement of the homogeneity of the combined material among the emulsification process, and then improve the whole water resistance of gypsum board.
Of course, effective homogenization of water and the waterproofing agent can be achieved to a greater extent by the pressing and beating of the bottom pressing plate 84, in a more preferred embodiment of the present invention, since the waterproofing agent is often a water repellent, in order to make the proportion of the waterproofing agent and the inner wall of the first feeding pipe 82 relatively uniform during the mixing process, further, the upper end surface of the annular cylinder wall 854 is obliquely and downwardly extended toward the inner side wall of the first feeding pipe 82 to form a material guide plate 856, and a plurality of raised ribs 8561 are formed on the material guide plate 856 along the extending direction, the inner portions of the ribs 61 85are hollow, and one side of the ribs 8561 away from the annular cylinder wall 854 is open; a water outlet hole assembly 812 is correspondingly arranged right below each rib 8561. Through the introduction of the material guide plate 856 and the even distribution of the ribs 8561, the waterproof agent is uniformly dispersed and falls in the falling process.
In a more preferred embodiment, the water outlet assembly 812 at least includes a first pipe 8121 and a second pipe 8122 sequentially connected to the side wall of the first water pipe 81, the first pipe 8121 extends along a horizontal direction, the second pipe 8122 inclines upwards towards the side wall of the first feeding pipe 82, and the open end of the second pipe 8122 is connected to the inside of the rib 8561. Further, through the arrangement, water and the waterproof agent are introduced into the material guide plate 856 to be fed, so that the uniformity of the amount and the dispersity of the water and the waterproof agent in the falling and mixing process is ensured. The addition amount of water and the waterproofing agent can be adaptively adjusted by adjusting the diameter of the hollow hole body inside the rib 8561 and the distance between the two ribs 8561.
Further, a pressurized channel may be introduced into the outlet assembly 812 to further increase the supply water pressure. Specifically, the pressurizing channel at least includes a surrounding baffle 8123 disposed in the first water delivery cavity 811 and surrounding the water inlet of the water outlet assembly 812, and of course, a water flow channel is formed by cooperation between an inner sidewall of the first water delivery pipe 81 and the surrounding baffle 8123. A plurality of water outlet holes 8124 corresponding to the water inlets one to one are formed in the side surface of the enclosing baffle 8123 close to the central axis of the first water delivery cavity 811, and it should be further described that a water flow channel formed between the enclosing baffle 8123 and the inner side wall of the first water delivery pipe 81 is partitioned into a plurality of chambers, and each chamber is provided with a group of water inlets and water outlet holes 8124 correspondingly, so that the volume of the channel between each group of water inlets and water outlet holes 8124 is fixed, and the water pressure entering each water inlet is basically consistent. It should be noted that the water inlet of the water outlet assembly 812, i.e. the connection of the first water pipe 81, enters the first pipe 8121.
Furthermore, an elastic baffle 8125 is arranged between each group of corresponding water outlet holes 8124 and the corresponding water inlet, and one side surface of the elastic baffle 8125 is hinged to the inner side wall of the enclosing baffle 8123. With such an arrangement, it is possible to pressurize the water in the first water conveying cavity 811, so as to flush the hinged elastic baffle 8125 through water pressure after flowing through the water outlet hole 8124, so as to achieve the limitation of the water pressure through the adjustment of the static friction at the rotation of the hinge, which can be understood and realized by those skilled in the art, for example, through the adjustment of the material between the contact surfaces of the hinge.
In a more preferred embodiment, in order to better guide the water flow and avoid the problem that the water flow easily enters the water flow channel and permeates through the gap of the elastic barrier 8125 when not in use, an elastic membrane 8126 for closing the water outlet hole 8124 is attached to one side of the water outlet hole 8124 close to the water outlet hole assembly 812, and a through net is formed in the elastic membrane 8126 at the position of the outer periphery of the water outlet hole 8124. By adopting the arrangement, the elastic membrane 8126 can be directly attached to the water outlet 8124 on the premise of nonuse, so that the water outlet 8124 is blocked; when the water pressure adjusting device is used, the elastic membrane 8126 is flushed by water pressure, an accommodating cavity is formed between the elastic membrane 8126 and the inner side wall of the enclosing baffle 8123 provided with the water outlet 8124, water flows out through the through net and is compressed of the through net to the water body flow, and further adjustment of the water pressure is achieved.
In a further preferred embodiment, the through net encloses the water outlet aperture 8124 and is formed as an annular structure. The arrangement of the annular structure can better realize the uniform conversion from pressure to thrust.
Meanwhile, it should be noted that the through holes 8127 in the penetrating net are preferably formed as honeycomb-shaped holes, and the number of the through holes 8127 in the ring structure is larger on the side far from the hinged end of the elastic baffle 8125 than on the side near to the hinged end. The honeycomb-shaped hole body is arranged in a mode that water pressure can be adjusted, water can be uniformly distributed, the number of the through holes 8127 is further adjusted, impact force of water used by the elastic separation blades 8125 can be conveniently flushed away, and accordingly water pressure is prevented from being greatly reduced.
In a further preferred embodiment, in order to effectively achieve the squeezing effect, the squeezing disk 84 includes a rotating rod 841 connected to the bottom of the first water pipe 81, and a rotating disk 842 disposed on an outer surface of the rotating rod 841, and an outer side surface of the rotating disk 842 is located outside the outer side surface of the material guide plate 856 in a vertical direction.
In a further preferred embodiment, in order to effectively stir the mixture of the water-repellent agent and the water, the rotating disc 842 includes a plurality of arc-shaped drainage frames 8421 extending from the outer surface of the rotating rod 841 in the horizontal direction, and a plurality of stirring rods 8422 extending from the side surfaces of the arc-shaped drainage frames 8421, wherein a main flow groove 8423 is formed on the upper surface of each arc-shaped drainage frame 8421 in the extending direction of the arc-shaped drainage frame 8421, and a plurality of auxiliary flow grooves 8424 located between two adjacent stirring rods 8422 are further communicated with the main flow groove 8423.
Certainly, a plurality of here arc drainage frame 8421's lateral wall contacts with the inside wall of first filling tube 82 respectively to realize the scraping effect, further, in order to realize diversified whipping and scraping and push away the effect, it is a plurality of arc drainage frame 8421 follows the outer peripheral face of dwang 841 is crisscross arranges, and extends the setting in order along vertical direction, just keep away from in the arc drainage frame 8421 the one end of dwang 841 still is formed with scraper 8425, just scraper 8425 with the inside wall of first filling tube 82 contacts.
In a more preferred embodiment, the bottom plate 813 is inclined downward from the inside to the outside.
In order to avoid the separation of the annular cylinder wall 54 from the bottom plate 13 and achieve effective sealing therebetween, the top end and the bottom end of the annular cylinder wall 854 extend inward to form a limiting plate, and a crushing knife roller 814 also extends from the outer side wall of the first water conveying pipe 81 above the bottom plate 813. Of course, the contact surface between the annular cylinder wall 854 and the bottom plate 813 can be further formed with a sealing film, so that even during the relative movement between the two, no obvious leakage problem occurs.
In a further preferred embodiment, the crushing cutter roller 814 is spirally disposed on an outer sidewall of the first water pipe 81. So that the waterproofing agent can be further dispersed to some extent during the rotation of the first water transport pipe 81, particularly for the powdered type of waterproofing agent.
In order to make the ground paste after mixing and beating distribute more evenly, opening 822 extends outward along the direction of transmission and is formed with extending section 823, just it is protruding to be formed with bellied broken tooth along the direction of transmission on extending section 823's the inner wall, just the protruding cross-section of broken tooth is triangle-shaped.
Further, as shown in fig. 4, 8 and 9, the surfactant adding device 6 herein includes a second water pipe 91 and a second feeding pipe 92 which are sequentially sleeved from inside to outside, and the inside of the second water pipe 91 is formed into a second water pipe cavity 911 for containing water, a pressurizing assembly 93 capable of moving along the inner wall of the second water pipe 91 is further hermetically connected to the inner side wall of the second water pipe 91, a feeding cavity 921 for adding a surfactant is formed between the second water pipe 91 and the second feeding pipe 92, and the bottom end of the feeding cavity 921 is communicated with an air-entrapping emulsification structure 94; wherein,
a plurality of water outlet through pipes 912 with downward openings are formed by extending the outer side wall of the second water conveying pipe 91 outwards and are positioned in the feeding cavity 921, and the water outlet through pipes 912 are arranged at equal intervals along the circumferential direction of the second water conveying pipe 91;
the water inlet of the water outlet through pipe 912 is further provided with a pressurizing channel for opening or closing the water outlet through pipe 912, and when the water pressure in the second water pipe 91 is greater than a preset value, the pressurizing channel is opened.
Through the arrangement mode, the problem that the distribution of the surfactant in the mixed material is still uneven due to the influence on the surface tension of water in the mixing process of the surfactant and the water in the conventional mixing process is solved, and in case of uneven mixing, the problem of uneven mixing is difficult to directly improve in a subsequent mixing mode such as stirring due to the existence of the surface tension. Meanwhile, the corresponding output water pressure can be adjusted according to the performances of different surfactants by further adjusting the pressurizing channel, so that the sprayed water can be relatively uniformly mixed into the surfactants.
Needless to say, the configuration of the pressurizing path in this embodiment refers to the configuration of the pressurizing path provided in the waterproofing agent adding apparatus 3, and will not be described in detail.
In another preferred embodiment of the present invention, the water outlet pipe 912 includes a third pipe body 9121 and a fourth pipe body 9122 sequentially connected to the second water pipe 91, the third pipe body 9121 extends along a horizontal direction, and the fourth pipe body 9122 is inclined downward toward the second feeding pipe 92;
the water outlet through pipe 912 is communicated with the side wall of the second water conveying pipe 91 and is positioned on one side of the second water conveying pipe 91 close to the bottom, and the bottom of the feeding cavity 921 is positioned below the bottom of the second water conveying cavity 911. Due to the structural arrangement, certain circulation paths can be reserved better after water is mixed with the surfactant, and more effective mixing is facilitated.
In a more preferred embodiment, in order to achieve effective contact mixing in the whole contact process, the second water pipe 91 is rotatably disposed relative to the second feeding pipe 92, and a thread-shaped guide groove 922 is formed on the inner wall of the second feeding pipe 92 and extends downward in a vertical direction. Through the setting of rotation formula, at the rotation in-process of second raceway 91, it drives out water siphunculus 912 and realizes the rotation, and then realizes certain stirring effect, and the rivers that have certain pressure in the play water siphunculus 912 of this moment flow out, not only itself has great potential energy, and rotates the further improvement that can realize the ascending potential energy of horizontal direction in-process to make it all mix with the surfactant of reinforced chamber 921 better. On this basis, the thick liquids after the even mixing are because density relative increase, and it is outwards got rid of to the inner wall of second filling pipe 92 on, and further can be introduced to the bottom of second filling pipe 92 through the guide of guide groove 922 to, the thick liquids after having avoided the mixed influence to the mixing process between unmixed surfactant agent and the pressurized water.
In another preferred embodiment of the present invention, the gas-filled emulsification structure 94 at least comprises an emulsification pump 941 and a gas-filling assembly 942, wherein the feed port of the emulsification pump 941 is communicated with the bottom end of the feeding cavity 921, the gas-filling assembly 942 at least comprises a gas supply unit 9421 and an annular gas-filling nozzle 9422 located at the communication position of the emulsification pump 941 and the feeding cavity 921, and the annular gas-filling nozzle 9422 is circumferentially enclosed. Of course, the annular gas filling nozzle 9422 may be further formed as a circular truncated cone, and the cross-sectional area of the connection portion with the feeding cavity 921 is smaller than the cross-sectional area of the end far away from the feeding cavity 921, so as to further pressurize the introduced gas, thereby increasing the spraying distance of the gas and achieving the uniformity of gas mixing.
In a more preferred embodiment, the nozzle direction of the annular gas-filling nozzle 9422 is directed obliquely upwards in the direction of the axis of the feed opening.
The pressurizing assembly 93 may adopt any suitable pressurizing manner, for example, in a preferred embodiment, the pressurizing assembly 93 includes a pressurizing block 931 attached to an inner wall of the second water duct 91, a pump rod 932 arranged on the pressurizing block 931, and a second air pump 933 arranged on the pump rod 32;
a placing plate is further formed by extending the outer peripheral surface of the second water delivery pipe 91 outwards above the water outlet through pipe 912, and a cylinder 934 which surrounds the outer peripheral surface of the placing plate and at least partially extends upwards is further connected to the pump rod 932. Place board and barrel 934 to and the cooperation setting of pump pole 932, make and to form one and bear the weight of the chamber, can put into the surfactant active and bear the weight of the chamber, preferably, pump pole 932 outside and cooperation are provided with the telescopic sleeve, in order to avoid surfactant active and pump pole 932 direct contact to cause the influence to pump pole 932. In the in-service use process, when needing to exert pressure to water, pump lever 932 pushes down, drives barrel 934 and pushes down to reduce the volume of whole load-bearing cavity, in the in-process of water injection to feeding chamber 921, surfactant also falls into feeding chamber 921, realizes going on in step of the two.
Further, the placing plate inclines downwards from inside to outside.
The invention also provides a production method of the water-resistant gypsum board by adopting the production system, which comprises the following steps:
s100, heating the gypsum material adding device until the steam flow in the steam collecting unit reaches a preset value;
s200, introducing hot air into a mixing device for bottom blowing, and adding gypsum materials, clear water, a waterproof agent and a processing aid into the mixing device from a feeding hole for mixing to obtain a premix;
s300, pushing the premix towards a discharge port of the mixing device, adding a surfactant through a feeding port when the premix is pushed to the discharge port, and blowing air towards the mixing device from the peripheral surface of the feeding port.
Of course, a flow meter may be further provided in the steam collecting unit at a side close to the gypsum material adding device to monitor whether it reaches a preset value. Similar other ways that can be used by those skilled in the art can be used herein.
In a further preferred embodiment, in step S200, the adding process further comprises mixing the waterproofing agent with pressurized water in advance to form a waterproofing agent system, and then blending with the gypsum material, the clear water and the processing aid.
Likewise, in another preferred embodiment of the present invention, the surfactant is a surfactant paste mixed with pressurized water and compressed air.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (9)

1. The production system of the water-resistant gypsum board is characterized by comprising a mixing device (1) provided with a feeding hole (11) and a discharging hole (12), a gypsum material adding device (2), a waterproof agent adding device (3), a clear water adding device (4) and a processing aid adding device (5) which are communicated with the feeding hole (11) of the mixing device (1), and a surfactant adding device (6) communicated with the discharging hole (12) of the mixing device (1); wherein,
the gypsum material adding device (2) comprises a gypsum bearing cavity (21) and a heating assembly (22) which is arranged on the outer side of the gypsum bearing cavity (21) and used for heating the gypsum bearing cavity (21), the bottom end of the gypsum bearing cavity (21) is communicated with the feeding hole (11), the top end of the gypsum bearing cavity (21) is communicated with the bottom surface of the mixing device (1) through a steam collecting unit (7), and the steam collecting unit (7) is used for bottom blowing of a mixture in the mixing device (1);
the discharge hole (12) at least comprises a discharge port (121) and a charging port (122), and the surfactant adding device (6) is communicated with the charging port (122);
the waterproof agent adding device (3) comprises a first water conveying pipe (81) and a first feed pipe (82), wherein a first water conveying cavity (811) is formed inside the first water conveying pipe, the first feed pipe (82) is sleeved outside the first water conveying pipe (81), an accommodating cavity (821) is formed between the first feed pipe (82) and the first water conveying pipe (81), a through water outlet hole assembly (812) is formed in the side wall of the first water conveying pipe (81), an opening (822) is formed in the side wall of the accommodating cavity (821) below the water outlet hole assembly (812), an emulsifying structure (83) is communicated with the opening (822), a squeezing disc (84) is further arranged at the bottom of the first water conveying pipe (81), and the squeezing disc (84) and at least part of the opening (822) are located on the same horizontal plane;
a sealing block (851) capable of moving on the inner wall of the first water pipe (81) along the vertical direction is hermetically connected to the inner wall of the first water pipe (81), an expansion link (852) is connected to the sealing block (851), and a first air pump (853) for pushing the expansion link (852) to move is connected to one end, far away from the sealing block (851), of the expansion link (852);
the outer wall of the first water pipe (81) extends along the circumferential direction to form a ring-shaped bottom plate (813), the telescopic rod (852) extends outwards to form a ring-shaped barrel wall (854), and the ring-shaped barrel wall (854) and the bottom plate (813) are matched to form a material containing cavity (855) with an opening on the upper surface.
2. A water-resistant gypsum board production system according to claim 1, wherein the mixing device (1) at least comprises a mixing cavity (13) and a discharge channel (14) formed by extending outwards from the side surface of the mixing cavity (13) along the horizontal direction, the discharge port (121) is positioned on the end surface of the discharge channel (14) far away from the mixing device (1), and the side surface of the discharge channel (14) is provided with a through feeding port (122);
the feed inlet (11) is positioned on the top surface of the mixing cavity (13).
3. A water-resistant gypsum board production system according to claim 1 or 2, wherein the steam collecting unit (7) comprises a steam channel (71) and a gas-liquid separator (72) which are communicated from the gypsum bearing cavity (21) to the mixing device (1), the clear water adding device (4) at least comprises a heat exchanger (41), a liquid outlet (721) of the gas-liquid separator (72) is communicated with a hot fluid inlet (411) of the heat exchanger (41), and a hot fluid outlet (412) is communicated with the gypsum bearing cavity (21);
and a gas outlet (722) in the gas-liquid separator (72) is communicated with the mixing device (1) through a throttle valve.
4. A water-resistant gypsum board production system according to claim 3, wherein the gypsum bearing cavity (21) comprises a first cavity (211) and a second cavity (212) which are sequentially formed from top to bottom, and the first cavity (211) is separated from the second cavity (212) by a partition board (213) formed with a through hole (214);
the upper surface of the isolation plate (213) is also provided with a drainage groove (215) which is partially concave downwards, the side wall of the first cavity body (211) extends inwards to form a drainage pipe (216) communicated with a hot fluid outlet (412) of a heat exchanger (41), and one end of the drainage pipe (216) far away from the hot fluid outlet (412) extends into the drainage groove (215).
5. A water-resistant gypsum board production system according to claim 3, wherein the outer periphery of the feeding port (122) is further surrounded with an air-feeding loop (61) for feeding air into the mixing device (1), and the air-feeding loop (61) is communicated with a gas supply unit through a throttle valve;
the air-entrapping ring pipe (61) is provided with vent holes which are distributed at equal intervals along the circumferential direction.
6. A water-resistant gypsum board production system according to claim 2, wherein the mixing chamber (13) and the bottom surface of the discharge channel (14) are communicated with a bottom blowing hole (15), and the diameter of the bottom blowing hole (15) on the discharge channel (14) is smaller than that of the bottom blowing hole (15) on the mixing chamber (13).
7. The water-resistant gypsum board production system according to claim 1, wherein the surfactant adding device (6) comprises a second water pipe (91) and a second feeding pipe (92) which are sequentially sleeved from inside to outside, a second water conveying cavity (911) for containing water is formed inside the second water pipe (91), a pressurizing assembly (93) capable of moving along the inner wall of the second water pipe (91) is further hermetically connected to the inner side wall of the second water pipe (91), a feeding cavity (921) for adding a surfactant is formed between the second water pipe (91) and the second feeding pipe (92), and an air-entrapping emulsification structure (94) is communicated with the bottom end of the feeding cavity (921); wherein,
the outer side wall of the second water pipe (91) extends outwards to form a plurality of water outlet through pipes (912) which are positioned in the feeding cavity (921) and have downward openings, and the water outlet through pipes (912) are arranged at equal intervals along the circumferential direction of the second water pipe (91);
the water inlet of the water outlet through pipe (912) is further provided with a pressurizing channel (913) for opening or closing the water outlet through pipe (912), and when the water pressure in the second water conveying pipe (91) is larger than a preset value, the pressurizing channel (913) is opened.
8. A method of producing water-resistant gypsum board using the production system according to any one of claims 1 to 7, comprising:
s100, heating the gypsum material adding device until the steam flow in the steam collecting unit reaches a preset value;
s200, introducing hot air into a mixing device for bottom blowing, and adding gypsum materials, clear water, a waterproof agent and a processing aid into the mixing device from a feeding hole for mixing to obtain a premix;
s300, pushing the premix towards a discharge port of the mixing device, adding a surfactant through a feeding port when the premix is pushed to the discharge port, and blowing air towards the mixing device from the peripheral surface of the feeding port.
9. The method for producing a water-resistant gypsum board according to claim 8, wherein in the step S200, the step of adding further comprises mixing a water-proofing agent with pressurized water in advance, and then blending with the gypsum material, clean water and processing aid; the surfactant is a surfactant paste mixed with pressurized water and compressed air.
CN202010618014.5A 2020-06-30 2020-06-30 Water-resistant gypsum board production system and production method Active CN111791370B (en)

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CN111187049A (en) * 2018-11-14 2020-05-22 北新建材（嘉兴）有限公司 Light water-resistant gypsum board and production method and production equipment thereof

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EP0543767A1 (en) * 1991-11-20 1993-05-26 Mitsubishi Jukogyo Kabushiki Kaisha Method of producing solid moldings from a by-product of wet limestone-gypsum desulfurization of flue gas
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