CN219171202U - Device capable of continuously extruding gypsum-based material - Google Patents
Device capable of continuously extruding gypsum-based material Download PDFInfo
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Abstract
The utility model discloses a device capable of continuously extruding gypsum-based materials, which belongs to the technical field of building material preparation and comprises a mixed dry material storage box, an annular conveying belt, a water adding device, a wet material storage box and an extruder; the discharge port of the mixed dry material storage box is connected with one end of the annular conveying belt; the feeding port of the wet material storage box is connected with the other end of the annular conveying belt, the extruder is connected with the discharging port of the wet material storage box, the water adding device is arranged above the top surface of the annular conveying belt and is positioned on the side of the mixed dry material storage box, which is close to the wet material storage box, and the discharging port of the mixed dry material storage box is provided with a flow limiting device. The device changes the traditional stirring mode of the gypsum-based material, enables the gypsum-based material added with water to enter the extruder before initial setting, and solves the problems that the gypsum-based material in the prior art is difficult to stir uniformly due to quick setting, the water content is not distributed uniformly, the mechanical parameters of the finished product are not high, and the cleaning is difficult after the stirring is finished.
Description
Technical Field
The utility model belongs to the technical field of building material preparation, and particularly relates to a device capable of continuously extruding gypsum-based materials.
Background
The gypsum building materials mainly comprise energy-saving hollow building blocks, gypsum solid bricks, gypsum fiber boards and other gypsum products, and the other gypsum products mainly comprise gypsum roof tiles, wallboards and the like. Gypsum-based materials are materials for making gypsum building materials, including dry materials and water. The dry material comprises gypsum and a second material, wherein the second material comprises one or more of cement, fly ash, lightweight aggregate and nonmetal fibers.
Gypsum is not well utilized at present as waste desulfurization gypsum generated after desulfurization of power plant soot, and the continuous increase of the waste occupies space and pollutes environment, so that the waste becomes a difficult problem of enterprises. Therefore, the national initiative is advocated to comprehensively utilize chemical gypsum such as industrial waste residue desulfurized gypsum, phosphogypsum and the like. Meanwhile, the state has made legal regulations that the use of sintered clay solid red bricks as building materials is prohibited in building construction. At present, gypsum powder is used for making bricks, and almost all other cementing materials are used as main materials, and gypsum is used as auxiliary materials to form a mixed solid brick; the cost is increased by adding high-price cement and high-coagulation raw materials into industrial slag gypsum; the method has the advantages that the method completely uses industrial gypsum as the raw material of the brick to produce the solid brick, and the prior unit attempts are all made because the physical strength can not meet the requirement or the freeze thawing detection can not meet the standard, and the solid brick can not be marketed; some of the gypsum plaster is prepared by mixing other cementing materials with gypsum powder, producing and forming by a slurry method and then sintering, and has high production cost and no profit.
The gypsum building materials mainly comprise energy-saving hollow building blocks, gypsum solid bricks, gypsum fiber boards, decorative gypsum laths, gao Wa and other gypsum products. When developing the novel wall material for the building, the wall product with lower compressive strength, larger drying shrinkage and poorer engineering application effect is eliminated, and the production and the use of the small-sized expanded perlite concrete block and the sintered clay product are limited, in particular to the non-energy-saving wall material with large heat transfer coefficient. The existing gypsum block production is the slurry casting method wet production, a large amount of water is needed in the wet production, more than 65% of water is needed to be added into each ton of dry powder for mixing to make the slurry uniform, namely the wet production called casting molding, and the product is also needed to be dried after molding, thus the gypsum block belongs to a high-energy-consumption product; the product has poor energy-saving effect and is produced by slurry casting (wet method); therefore, the change of the dry humidity of the periphery is fatal to the strength of the gypsum block after forming the wall.
The patent with publication number CN101172796A discloses a production process of a full-dry desulfurization gypsum building material product, which comprises the following steps: (1) Taking desulfurized gypsum, phosphogypsum or natural gypsum as raw materials, and drying and calcining at 150-250 ℃ for 20-30 minutes; generating mixed phase powder consisting of high-strength anhydrous gypsum powder and semi-hydrated gypsum powder; sieving through a sieve of 40-80 meshes; (2) Adding 10% -20% of water and 1% -5% of inorganic silicon waterproof agent into the high-strength anhydrous gypsum powder and semi-hydrated gypsum mixed phase powder obtained in the step (1), and mixing and stirring to enable the mixture to be still in a dry powder state after stirring; (3) Conveying the mixed dry powder obtained in the step (2) into a paving machine, and paving the materials according to the thickness of a die by the paving machine; (4) And (3) pressing at high pressure, and forming under the pressure of 30-50 kg/cm < 2 >, so as to obtain the high-density gypsum building material products, namely the desulfurized gypsum hollow block, the gypsum solid brick and the gypsum fiber board. The disadvantage is that only the dry powder added with 20% of water can bear high-pressure pressing to obtain the gypsum product with high density; when the aqueous solution is added to 25%, the material will flow under pressure and cannot withstand high pressure. The dry powder material is completely adopted for pressing, and the water quantity required by the full efficient solidification of the gypsum product cannot be met, so that the mechanical parameters of the product cannot reach the highest value. The spreading machine is adopted to spread materials according to the thickness of the die, the materials are pressed under high pressure, the extrusion mode can not be adopted for production, and the production efficiency is low.
The patent with publication number CN101138863A discloses a method for producing gypsum building products by extrusion process, which comprises the steps of preparing gypsum extrusion materials, selecting an extruder with a structure consisting of a mixing section 1, a buffer section 2, an extrusion section 3 and a forming machine head 4, and three major parts of production process steps. The device has the defects that the water adding device 5 is arranged at the inlet of the extrusion section 3, and the extrusion is immediately carried out after the water adding device adds water, so that the uneven mixing of water and powder is not easy to ensure due to the small space of the extrusion section, the heat dissipation is poor, and the mechanical parameters of the produced product are uneven. In addition, the production process needs to use a coagulation regulator, and the cost is high.
The desulfurization gypsum of the thermal power plant is used as waste generated after the desulfurization of the power plant soot, the waste is not well utilized at present, and the continuous increase of the waste occupies space and pollutes the environment, so that the waste becomes a difficult problem of enterprises. Therefore, the national initiative is advocated to comprehensively utilize chemical gypsum such as industrial waste residue desulfurized gypsum, phosphogypsum and the like. Wang Yongsheng (China building technology, 2017, 2 nd stage) discloses the initial setting and final setting time of desulfurization gypsum of three power plants, wherein the initial setting time of the desulfurization gypsum is 1 part, 3 seconds to 1 minute, 18 seconds, and the final setting time is 4 minutes to 4 minutes, 26 seconds. If the dry building material containing the desulfurized gypsum is put into a stirrer and added with water for stirring, the gypsum absorbs water rapidly while stirring, local water absorption often forms a large-viscosity lump, and the larger the lump is adhered to the blades, four walls and shafts of the stirrer, the thicker the lump is, so that the cleaning is difficult. Moreover, the initial setting and final setting time of the desulfurized gypsum after water absorption is only a few minutes, and the desulfurized gypsum cannot be uniformly stirred and conveyed on a production device within a few minutes. Therefore, in the prior art, a device for manufacturing the continuously extrudable desulfurized gypsum building material by adopting a semi-dry process technology.
Disclosure of Invention
The utility model aims to provide a device capable of continuously extruding gypsum-based materials, which is characterized in that the gypsum-based materials with optimal water supply and uniform water supply are obtained by a method of supplying water to a thin layer outside a stirrer by dry materials of the gypsum-based materials, the gypsum-based materials with uniform water supply are supplied to an extruder for extrusion in a short time, and the problems that the gypsum-based materials in the prior art are difficult to stir, the water content distribution is uneven after mixing, the mechanical parameters of finished products are low, and cleaning is difficult after completion of stirring are solved.
The technical scheme adopted by the utility model is as follows.
But continuous extrusion gypsum-based material device, its characterized in that: comprises a mixed dry material storage box, an annular conveyer belt, a water adding device, a wet material storage box and an extruder; the discharge port of the mixed dry material storage box is connected with one end of the annular conveying belt; the feeding port of the wet material storage box is connected with the other end of the annular conveying belt, the extruder is connected with the discharging port of the wet material storage box, the water adding device is arranged above the top surface of the annular conveying belt and is positioned on the side of the mixed dry material storage box, which is close to the wet material storage box, and the discharging port of the mixed dry material storage box is provided with a flow limiting device.
As the preferable technical scheme, one end of the annular conveying belt is positioned below a discharge hole of the mixed dry material storage box, and the other end of the annular conveying belt is positioned above a feed hole of the wet material storage box.
As the preferable technical scheme, the annular conveying belt is arranged on the driving wheel and the driven driving wheel, and the driving wheel and the driven driving wheel are arranged on the annular conveying belt bracket.
As the preferable technical scheme, the mixed dry material storage box is arranged on a mixed dry material storage box bracket; the wet material storage box is arranged on the wet material storage box bracket.
As the preferable technical proposal, a plurality of spray heads are arranged on the water adding device; the water adding device is arranged on the water adding device bracket.
As a preferable technical scheme, the material of the annular conveying belt is nonmetal.
As the preferable technical scheme, baffles are respectively arranged on two sides of the long edge of the top surface of the annular conveying belt.
As a preferable technical scheme, the flow limiting device comprises a blocking plate, wherein the blocking plate is arranged on the side, close to the water adding device, of a discharge hole of the mixed dry material storage box, and the bottom surface of the blocking plate is not contacted with the top surface of the annular conveying belt; the blocking plate is positioned between the two baffles.
As a preferred solution, the blocking plate is perpendicular to the long side of the top surface of the endless conveyor belt.
As a preferable technical scheme, the blocking plate is connected with a discharge hole of the mixed dry material storage box through a height adjusting device.
The method for preparing the gypsum-based material by adopting any one of the continuous extrusion gypsum-based material devices is characterized by comprising the following steps:
step 1: uniformly mixing gypsum-based dry materials, and placing the mixed dry materials into a mixed dry material storage box, wherein the gypsum-based dry materials comprise calcined gypsum powder;
step 2: the gypsum-based material dry material enters the top surface of the annular conveying belt through a discharge hole of the mixed dry material storage box, and forms a dry material layer on the top surface of the annular conveying belt along with the movement of the annular conveying belt; adding water to the dry material layer through a water adding device; the wet material layer formed by the dry material after water is added enters a wet material storage box, and the wet material in the wet material storage box enters an extruder to be extruded.
The time from the feeding of the dry gypsum-based material from the discharge port of the dry mix storage tank to the top surface of the endless conveyor belt to the feeding of the dry gypsum-based material from the top surface of the endless conveyor belt to the extruder is no more than 15 seconds. The gypsum-based dry material also comprises a second material, wherein the second material comprises one or more of cement, fly ash, lightweight aggregate and nonmetal fibers.
The beneficial effects of the utility model are as follows:
1. before the gypsum-based dry materials are uniformly mixed, water is not added; the thin-layer dry material is fed with water in the movement of the conveying belt, and stirring is not carried out in the water feeding process, so that the defects that the plaster in the dry material is stirred when meeting water, the plaster is easy to adhere to blades, four walls, shafts and the like of a stirring device after being hydrated, the cleaning is difficult, and the water feeding is uneven in the prior art are overcome.
2. The water supply process is completed on the annular conveyer belt, and the heat dissipation is uniform.
3. The gypsum-based dry material can be continuously conveyed to the mixed dry material storage box, water is continuously added through the water adding device to form wet material with uniform water supply, the wet material is continuously conveyed into the extruder, and the whole device can realize continuous production.
4. The water consumption can be accurately controlled by adjusting the feeding amount of the water feeding device and the feeding speed of the conveying belt, the water consumption is controllable, the water feeding is uniform, and the mechanical parameters of the manufactured product are good.
5. The time from the feeding of the dry gypsum-based material from the feeding hole of the dry mixed material storage box to the top surface of the annular conveying belt to the feeding of the dry gypsum-based material from the top surface of the annular conveying belt to the extruding machine is not more than 15 seconds, and the mechanical parameters of the manufactured product are good before the primary setting of the calcined gypsum.
6. The maintenance time of the finished product made of wet materials can be reduced by precisely controlling the water consumption.
Drawings
FIG. 1 is a schematic view of the structure of example 1 of the apparatus for continuously extruding gypsum-based material of the present utility model.
Fig. 2 is a partial enlarged view of a portion B of fig. 1.
Fig. 3 is a partial enlarged view of a portion C of fig. 1.
Fig. 4 is a cross-sectional view of the continuously extrudable gypsum-based material apparatus of fig. 1 taken along line A-A'.
Fig. 5 is a partial enlarged view of a portion D of fig. 4.
Fig. 6 is a schematic structural view of example 2 of the continuously extrudable gypsum-based material apparatus of the present utility model.
Fig. 7 is a partial enlarged view of a portion E of fig. 6.
Fig. 8 is a schematic structural view of example 3 of the continuously extrudable gypsum-based material apparatus of the present utility model.
Fig. 9 is a partial enlarged view of the portion F of fig. 8.
Fig. 10 is a partial enlarged view of a portion G of fig. 8.
FIG. 11 is a schematic view of the structure of example 4 of the apparatus for continuously extruding gypsum-based material of the present utility model.
Fig. 12 is a partial enlarged view of the H portion of fig. 11.
Wherein: a mixed dry material storage box-1; a discharge hole-10 of the mixed dry material storage box; a mixed dry material storage box bracket-11; an endless conveyor belt-2; the top surface of the annular conveying belt is 20; a driving wheel-21; a passive drive wheel-22; an endless conveyor belt holder-23; a water adding device-3; a nozzle-31; a water adding device bracket-32; an extruder-4; wet material storage box-5; a feed inlet-51 of the wet material storage box; a discharge hole-52 of the wet material storage box; wet material storage box bracket-53; a baffle-6; a height adjusting device-7; and a blocking plate-8.
Detailed Description
The utility model will now be further described with reference to the drawings and examples.
Example 1. As shown in fig. 1-5, the gypsum-based material device capable of continuously extruding comprises a mixed dry material storage box 1, an annular conveying belt 2, a water adding device 3, a wet material storage box 5 and an extruder 4; the discharge port 10 of the mixed dry material storage box is connected with the left end of the annular conveying belt 2; the feed inlet 51 of wet material storage box links to each other with the right-hand member of annular conveyer belt 2, and extruder 4 links to each other with the discharge gate 52 of wet material storage box, and the water adding device 3 sets up in the top of the top surface 20 of annular conveyer belt and is located the wet material storage box 5 side that is close to of dry material storage box 1, is equipped with flow limiting device on the discharge gate 10 of dry material storage box.
One end of the annular conveying belt 2 is positioned below the discharge port 10 of the mixed dry material storage box, and the other end of the annular conveying belt 2 is positioned above the feed port 51 of the wet material storage box.
The endless conveyor belt 2 is made of nonmetallic materials. The nonmetal is rubber.
The two sides of the long side of the top surface 20 of the annular conveying belt are respectively provided with a baffle plate 6.
The flow limiting device comprises a blocking plate 8, the blocking plate 8 is arranged on the side, close to the water adding device 3, of the discharge hole 10 of the mixed dry material storage box, and the bottom surface of the blocking plate 8 is not contacted with the top surface 20 of the annular conveying belt; the blocking plate 8 is located between the two baffles 6.
The blocking plate 8 is perpendicular to the long side of the top surface 20 of the endless conveyor.
The method for preparing the gypsum-based material by adopting any one of the continuous extrusion gypsum-based material devices is characterized by comprising the following steps:
step 1: uniformly mixing gypsum-based material, and placing the mixed material into a mixed material storage box 1, wherein the gypsum-based material comprises calcined gypsum powder;
step 2: the gypsum-based material dry material enters the top surface 20 of the annular conveying belt through the discharge port 10 of the mixed dry material storage box, and forms a dry material layer on the top surface of the annular conveying belt 2 along with the clockwise movement of the annular conveying belt 2 under the blocking of the blocking plate 8; adding water to the dry material layer through a water adding device 3; the wet material layer formed by the dry material after water addition enters a wet material storage box 5 from the right end of the annular conveying belt 2, and the wet material in the wet material storage box 5 enters an extruder 4 to be extruded.
The time from the entry of the gypsum-based material dry material into the top surface 20 of the endless conveyor belt from the discharge port 10 of the mixed dry material storage tank to the entry of the gypsum-based material dry material into the extruder 4 from the top surface 20 of the endless conveyor belt is no more than 8 seconds. The gypsum-based dry material also comprises a second material, wherein the second material comprises cement, fly ash and glass fiber. The water was added in an amount of 33% of the total weight of the wet mass. The thickness of the dry layer formed on the endless conveyor belt 2 was 1.5mm. By adopting the technical scheme, the extruded wallboard can be packaged, transported and used in 36 hours, so that the airing time is greatly reduced.
The beneficial effects of this embodiment are as follows:
1. before the gypsum-based dry materials are uniformly mixed, water is not added; the thin-layer dry material is fed with water in the movement of the conveying belt, and stirring is not carried out in the water feeding process, so that the defects that the plaster in the dry material is stirred when meeting water, the plaster is easy to adhere to blades, four walls, shafts and the like of a stirring device after being hydrated, the cleaning is difficult, and the water feeding is uneven in the prior art are overcome.
2. The water supply process is completed on the annular conveyer belt, and the heat dissipation is uniform.
3. The gypsum-based dry material can be continuously conveyed to the mixed dry material storage box, water is continuously added through the water adding device to form wet material with uniform water supply, the wet material is continuously conveyed into the extruder, and the whole device can realize continuous production.
4. The water consumption can be accurately controlled by adjusting the feeding amount of the water feeding device and the feeding speed of the conveying belt, the water consumption is controllable, the water feeding is uniform, and the mechanical parameters of the manufactured product are good.
5. The time from the feeding of the dry gypsum-based material from the feeding port 10 of the dry mix storage box to the top surface 20 of the annular conveyor belt to the feeding of the dry gypsum-based material from the top surface 20 of the annular conveyor belt to the extruder 4 is not more than 15 seconds, and the mechanical parameters of the finished product are good.
6. The maintenance time of the finished product made of wet materials can be reduced by precisely controlling the water consumption.
Example 2. As shown in fig. 6-7, the blocking plate 8 is connected with a discharge hole 10 of the mixed dry material storage box through a height adjusting device 7. By means of the height adjustment means 7, the distance between the blocking plate 8 and the top surface 20 of the endless conveyor can be controlled, thereby controlling the thickness of the layer of dry material formed on the top surface of the endless conveyor 2. The material of the conveyor belt 2 is polyurethane. The addition amount of water was 38% of the total weight of the wet material. 2% of nonmetallic fiber by weight percent of dry materials, and the balance of second materials. The second material is cement, fly ash and lightweight aggregate. Non-metallic fiber is polyvinyl alcohol fiber and delaunay fiber.
Example 3. As shown in fig. 8 to 10, this embodiment is different from embodiment 1 in that: the annular conveyer belt 2 is arranged on the driving wheel 21 and the driven driving wheel 22, and the driving wheel 21 and the driven driving wheel 22 are arranged on the annular conveyer belt bracket 23; the mixed dry material storage box 1 is arranged on a mixed dry material storage box bracket 11; the wet material storage box 5 is arranged on the wet material storage box bracket 53; the water adding device 3 is provided with a plurality of spray heads 31; the watering device 3 is mounted on a watering device holder 32. The addition amount of water is 35% of the total weight of the wet material. 1-5% of non-metal fiber by weight percent of dry material, and the balance of second material. The second material is cement, fly ash and lightweight aggregate. Nonmetallic fibers include cellulose fibers, glass fibers.
Example 4. As shown in fig. 11 to 12, this embodiment is different from embodiment 1 in that: the annular conveyer belt 2 is arranged on the driving wheel 21 and the driven driving wheel 22, and the driving wheel 21 and the driven driving wheel 22 are arranged on the annular conveyer belt bracket 23; the mixed dry material storage box 1 is arranged on a mixed dry material storage box bracket 11; the wet material storage box 5 is arranged on the wet material storage box bracket 53; the water adding device 3 is provided with a plurality of spray heads 31; the watering device 3 is mounted on a watering device holder 32. The addition amount of water is 32% of the total weight of the wet material. 5% of non-metal fiber by weight percent of dry material and the balance of second material. The second material is cement, fly ash and lightweight aggregate. The nonmetallic fibers include polypropylene fibers.
The above-mentioned embodiments are only for understanding the present utility model, and are not intended to limit the technical solutions described in the present utility model, and a person skilled in the relevant art may make various changes or modifications, and all equivalent changes or modifications are intended to be included in the scope of the present utility model. The present utility model is not described in detail in the present application, and is well known to those skilled in the art.
Claims (10)
1. But continuous extrusion gypsum-based material device, its characterized in that: comprises a mixed dry material storage box (1), an annular conveying belt (2), a water adding device (3), a wet material storage box (5) and an extruder (4); a discharge hole (10) of the mixed dry material storage box is connected with one end of the annular conveying belt (2); the feeding port (51) of the wet material storage box is connected with the other end of the annular conveying belt (2), the extruder (4) is connected with the discharging port (52) of the wet material storage box, the water adding device (3) is arranged above the top surface (20) of the annular conveying belt and is positioned on the side, close to the wet material storage box (5), of the dry material storage box (1), and the discharging port (10) of the dry material storage box is provided with a flow limiting device.
2. The continuously extrudable gypsum-based material apparatus of claim 1, wherein: one end of the annular conveying belt (2) is positioned below a discharge hole (10) of the mixed dry material storage box, and the other end of the annular conveying belt (2) is positioned above a feed hole (51) of the wet material storage box.
3. The continuously extrudable gypsum-based material apparatus of claim 1, wherein: the annular conveying belt (2) is arranged on the driving wheel (21) and the driven driving wheel (22), and the driving wheel (21) and the driven driving wheel (22) are arranged on the annular conveying belt bracket (23).
4. The continuously extrudable gypsum-based material apparatus of claim 1, wherein: the mixed dry material storage box (1) is arranged on the mixed dry material storage box bracket (11); the wet material storage box (5) is arranged on the wet material storage box bracket (53).
5. The continuously extrudable gypsum-based material apparatus of claim 1, wherein: a plurality of spray heads (31) are arranged on the water adding device (3); the water adding device (3) is arranged on the water adding device bracket (32).
6. The continuously extrudable gypsum-based material apparatus of claim 1, wherein: the annular conveying belt (2) is made of nonmetal.
7. The continuously extrudable gypsum-based material apparatus as recited in any one of claims 1-6, wherein: the two sides of the long side of the top surface (20) of the annular conveying belt are respectively provided with a baffle plate (6).
8. The continuously extrudable gypsum-based material apparatus of claim 7, wherein: the flow limiting device comprises a blocking plate (8), the blocking plate (8) is arranged on the side, close to the water adding device (3), of a discharge hole (10) of the mixed dry material storage box, and the bottom surface of the blocking plate (8) is not contacted with the top surface (20) of the annular conveying belt; the blocking plate (8) is positioned between the two baffle plates (6).
9. The continuously extrudable gypsum-based material apparatus of claim 7, wherein: the blocking plate (8) is perpendicular to the long side of the top surface (20) of the endless conveyor belt.
10. The continuously extrudable gypsum-based material apparatus of claim 7, wherein: the blocking plate (8) is connected with a discharge hole (10) of the mixed dry material storage box through a height adjusting device (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222942063.1U CN219171202U (en) | 2022-11-05 | 2022-11-05 | Device capable of continuously extruding gypsum-based material |
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| CN202222942063.1U CN219171202U (en) | 2022-11-05 | 2022-11-05 | Device capable of continuously extruding gypsum-based material |
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