CN111791340A - A surfactant interpolation device for production of water-fast gypsum board - Google Patents
A surfactant interpolation device for production of water-fast gypsum board Download PDFInfo
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- CN111791340A CN111791340A CN202010618013.0A CN202010618013A CN111791340A CN 111791340 A CN111791340 A CN 111791340A CN 202010618013 A CN202010618013 A CN 202010618013A CN 111791340 A CN111791340 A CN 111791340A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/50—Producing shaped prefabricated articles from the material specially adapted for producing articles of expanded material, e.g. cellular concrete
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
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Abstract
The embodiment of the invention discloses a surfactant adding device for producing a water-resistant gypsum board, which comprises a water conveying pipe and a feeding pipe which are sequentially sleeved from inside to outside, wherein a water conveying cavity for containing water is formed inside the water conveying pipe; the outer side wall of the water pipe extends outwards to form a plurality of water outlet through pipes with downward openings, and the water outlet through pipes are arranged at equal intervals along the circumferential direction of the water pipe; the water inlet of the water outlet through pipe is also provided with a pressurizing channel for opening or closing the water outlet through pipe, and when the water pressure in the water conveying pipe is greater than a preset value, the pressurizing channel is opened. The uniform foaming and mixing of the surfactant are realized, and the quality of the gypsum board is effectively improved.
Description
Technical Field
The embodiment of the invention relates to the field of gypsum board production devices, in particular to a surfactant adding device for producing a water-resistant gypsum board.
Background
The water-resistant paper-surface gypsum board is a gypsum board prepared by taking building gypsum as a main raw material and adding a certain amount of processing aids such as surfactant and the like into a gypsum core material, and the gypsum core material is foamed to form a foamed board by introducing gas, so that the quality of the board is greatly influenced by the quality of the foaming process.
However, in the prior art, the surfactant in the gypsum board is often added by directly adding the surfactant and an auxiliary agent such as a foam stabilizer into the mixed slurry and introducing gas for foaming, however, because the surfactant generally has a hydrophilic group and a hydrophilic oil group, the surfactant is often difficult to be stably and uniformly mixed into the slurry due to the difference of the slurry uniformity and the difference of the bonding density in the bonding process in the actual mixing process, so that the density of foaming pores is easily uneven, and the generated pores contain large pores, thereby causing poor quality of the whole gypsum board. If the surfactant and water and the like are premixed and then mixed with the slurry, the production time is greatly increased, and in the mixing process, the problem of poor mixing of the surfactant still exists in the mixing process due to the hydrophilic property of the hydrophilic group and the tension change of the water body after the surfactant is added.
Disclosure of Invention
Therefore, the embodiment of the invention provides a surfactant adding device for producing a water-resistant gypsum board, wherein in the surfactant adding process, water is pressurized to a certain set value and then is sprayed out and mixed with a surfactant, so that the influence of the change of the surface tension of water bodies on the water bodies in the mixing process of the water bodies and the surfactant is overcome to a certain extent, the mixing proportion of the water bodies and the surfactant is relatively uniform, the blending effect of the water bodies and the surfactant is further improved by adding air on the basis, and emulsification is carried out, so that the uniform mixing of the gas is effectively ensured, the uniformity of foaming pores of the whole gypsum board can be improved, and the pores are formed into fine small bubbles.
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, the surfactant adding device for producing the water-resistant gypsum board comprises a water conveying pipe and a feeding pipe which are sequentially sleeved from inside to outside, wherein a water conveying cavity for containing water is formed inside the water conveying pipe, a pressurizing assembly capable of moving along the inner wall of the water conveying pipe is further hermetically connected to the inner side wall of the water conveying pipe, a feeding cavity for adding the surfactant is formed between the water conveying pipe and the feeding pipe, and the bottom end of the feeding cavity is communicated with an air-entrapping emulsification structure; wherein the content of the first and second substances,
the outer side wall of the 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 water conveying pipe;
the water inlet of the water outlet through pipe is also provided with a pressurizing channel for opening or closing the water outlet through pipe, and when the water pressure in the water conveying pipe is greater than a preset value, the pressurizing channel is opened.
As a preferable scheme of the present invention, the water outlet pipe includes a first pipe body and a second pipe body sequentially communicated with the water pipe, the first pipe body extends along a horizontal direction, and the second pipe body is inclined downward toward the feeding pipe;
the water outlet through pipe is communicated with the side wall of the water delivery pipe and is positioned on one side of the water delivery pipe close to the bottom, and the bottom of the feeding cavity is positioned below the bottom of the water delivery cavity.
As a preferable scheme of the present invention, the pressurizing channel at least includes an enclosing baffle disposed in the water conveying cavity and enclosing the water inlet of the water outlet through pipe, a plurality of water outlet holes corresponding to the water inlet are formed on a side surface of the enclosing baffle close to a central axis of the water conveying cavity, an elastic blocking piece is disposed between each group of corresponding water outlet holes and the water inlet, and one side surface of the elastic blocking piece is hinged to an inner side wall of the enclosing baffle.
As a preferable aspect of the present invention, an elastic membrane for closing the water outlet hole is attached to one side of the water outlet hole close to the water outlet through pipe, and a through mesh is formed at a position of the elastic membrane located at an outer periphery of the water outlet hole.
As a preferable aspect of the present invention, the through mesh encloses the water outlet hole and is formed in an annular structure;
and the through holes in the through net form honeycomb-shaped hole bodies, and the number of the through holes on one side of the annular structure far away from the hinged end of the elastic baffle sheet is larger than that of the through holes on one side close to the hinged end.
As a preferable scheme of the present invention, the water pipe is rotatably disposed with respect to the feeding pipe, and a thread-shaped guide groove is formed on an inner wall of the feeding pipe and extends obliquely downward in a vertical direction.
As a preferable scheme of the invention, the gas-entrapping emulsification structure at least comprises an emulsification pump and a gas-entrapping assembly, a feed inlet of the emulsification pump is communicated with the bottom end of the feeding cavity, the gas-entrapping assembly at least comprises a gas supply unit and an annular gas-entrapping spout located at the communication position of the emulsification pump and the feeding cavity, and the annular gas-entrapping spout is arranged in a surrounding manner along the circumferential direction.
In a preferred embodiment of the present invention, the nozzle direction of the annular gas filling nozzle is inclined upward toward the extension direction of the axis of the feed inlet.
As a preferable scheme of the present invention, the pressurizing assembly includes a pressurizing block attached to an inner wall of the water pipe, a pump rod disposed on the pressurizing block, and an air pump disposed on the pump rod;
the upper part of the water outlet through pipe extends outwards from the peripheral surface of the water conveying pipe to form a placing plate, and the pump rod is connected with a barrel which surrounds the peripheral surface of the placing plate and at least partially extends upwards.
As a preferable aspect of the present invention, the placement plate is inclined obliquely downward from inside to outside.
The embodiment of the invention has the following advantages:
1. the pressurizing assembly and the pressurizing channel are matched to pressurize the water body in the water pipe to a certain degree, and after the pressure reaches a preset value, the pressurizing channel is opened, and the water in the water pipe is sprayed out and mixed, so that the preset value can be adaptively adjusted according to the using amount and the characteristics of the surfactant, and an ideal blending effect is achieved;
2. further, the gas-entrapping emulsification structure is communicated in the system after blending, and through the uniform addition of gas, the gas is effectively and uniformly mixed, and meanwhile, the gas is blown in to further accelerate the molecular motion and further emulsify, so that the uniform stability of the bubbles of the prepared gypsum board is effectively 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 structural diagram of a surfactant adding apparatus according to an embodiment of the present invention;
FIG. 2 is a partial schematic structural view of portion A of FIG. 1 according to the present invention;
fig. 3 is a schematic partial structural diagram of an elastic membrane according to an embodiment of the present invention.
In the figure:
1-water conveying pipe; 2-a feed pipe; 3-a pressurizing assembly; 4-air-entrapping emulsification structure;
11-a water delivery cavity; 12-water outlet through pipe; 13-a pressurized channel; 14-placing a plate;
121-a first tube; 122-a second tube;
131-enclosing baffle plate; 132-water outlet; 133-an elastic baffle sheet; 134-an elastic membrane; 135-through holes;
21-a feeding cavity; 22-a guide groove;
31-pressing blocks; 32-pump rod; 33-an air pump; 34-a cylinder body;
41-an emulsification pump; 42-an air entrainment assembly;
421-a gas providing unit; 422-annular 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. 1-3, the invention provides a surfactant adding device for water-resistant gypsum board production, which comprises a water pipe 1 and a feeding pipe 2 which are sequentially sleeved from inside to outside, wherein a water conveying cavity 11 for containing water is formed inside the water pipe 1, a pressurizing assembly 3 capable of moving along the inner wall of the water pipe 1 is further hermetically connected to the inner side wall of the water pipe 1, a feeding cavity 21 for adding a surfactant is formed between the water pipe 1 and the feeding pipe 2, and the bottom end of the feeding cavity 21 is communicated with an air-entrapping emulsification structure 4; wherein the content of the first and second substances,
a plurality of water outlet through pipes 12 with downward openings are formed in the feeding cavity 21 in an outward extending manner on the outer side wall of the water pipe 1, and the water outlet through pipes 12 are arranged at equal intervals along the circumferential direction of the water pipe 1;
the water inlet of the water outlet through pipe 12 is further provided with a pressurizing channel 13 for opening or closing the water outlet through pipe 12, and when the water pressure in the water conveying pipe 1 is greater than a preset value, the pressurizing channel 13 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 adjustment of the pressurizing channel 13 can be further used to adjust the output water pressure according to the performances of different surfactants, so that the sprayed water can be relatively uniformly mixed into the surfactants.
In order to make the pressurizing channel 13 capable of adjusting the water pressure, in a preferred embodiment of the present invention, specifically, the pressurizing channel 13 at least includes a surrounding baffle 131 disposed in the water delivery cavity 11 and surrounding the water inlet of the water outlet pipe 12, and of course, a water flow channel is formed by the cooperation between the inner side wall of the water delivery pipe 1 and the surrounding baffle 131. A plurality of water outlet holes 132 corresponding to the water inlets one by one are formed on the side surface of the enclosing baffle 131 close to the central axis of the water delivery cavity 11, and it should be further described that a water flow channel formed between the enclosing baffle 131 and the inner side wall of the water delivery pipe 1 is divided into a plurality of chambers, and each chamber is provided with a group of water inlets and water outlet holes 132 correspondingly, so that the volume of the channel between each group of water inlets and water outlet holes 132 is fixed, and the water pressure entering each water inlet is basically consistent.
Furthermore, an elastic baffle sheet 133 is arranged between each group of corresponding water outlet holes 132 and the corresponding water inlet, and one side surface of the elastic baffle sheet 133 is hinged to the inner side wall of the enclosing baffle 131. With such an arrangement, it is possible to pressurize the water in the water delivery cavity 11, so as to flush the hinged elastic baffle 133 through water pressure after flowing through the water outlet hole 132, so as to achieve the limitation of the water pressure through the adjustment of the static friction force at the rotation position of the hinge, which can be understood and achieved 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 baffle 133 when not in use, an elastic membrane 134 for closing the water outlet hole 132 is attached to one side of the water outlet through pipe 12 in the water outlet hole 132, and a through net is formed at a position of the elastic membrane 134 at the periphery of the water outlet hole 132. By adopting the arrangement, the elastic membrane 134 can be directly attached to the water outlet hole 132 on the premise of nonuse, so that the water outlet hole 132 is blocked; when the in-process that uses, elastic diaphragm 134 is washed away to water pressure, and elastic diaphragm 134 and the inside wall that is provided with apopore 132 and encloses and close baffle 131 are formed with between and hold the chamber, and water flows through the net that link up to through the compression to the water flow that links up the net, realize hydraulic further adjustment.
In a further preferred embodiment, the through-mesh encloses the water outlet hole 132 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 135 in the penetrating net are preferably formed as honeycomb-shaped cells, and the number of the through holes 135 in the ring structure is larger on the side away from the hinge end of the elastic flap 133 than on the side close to the hinge end. The setting mode of the honeycomb-shaped hole body can realize the adjustment of water pressure and ensure the uniform distribution of water, and through the further adjustment of the number of the through holes 135, the impact force of water used by the elastic retaining sheet 133 can be conveniently opened, thereby avoiding the great reduction of the water pressure.
In another preferred embodiment of the present invention, the water outlet pipe 12 includes a first pipe 121 and a second pipe 122 sequentially connected to the water pipe 1, the first pipe 121 extends along a horizontal direction, and the second pipe 122 is inclined downward toward the feeding pipe 2;
the water outlet through pipe 12 is communicated with the side wall of the water delivery pipe 1 and is positioned on one side of the water delivery pipe 1 close to the bottom, and the bottom of the feeding cavity 21 is positioned below the bottom of the water delivery cavity 11. 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 realize effective contact mixing in the whole contact process, the water pipe 1 is rotatably arranged relative to the feeding pipe 2, and a thread-shaped guide groove 22 is formed on the inner wall of the feeding pipe 2 and extends downward in a vertical direction. Through the setting of rotation formula, at the rotation in-process of raceway 1, it drives out water siphunculus 12 and realizes the rotation, and then realizes certain stirring effect, and the rivers that have certain pressure in the water siphunculus 12 of going out 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 active in the feeding chamber 21 better. On this basis, the thick liquids after the even mixing because of the relative increase of density itself, it outwards gets rid of to the inner wall of filling pipe 2 on, further can be through the guide of guiding groove 22, introduces to the bottom of filling pipe 2 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-filling emulsification structure 4 at least comprises an emulsification pump 41 and a gas-filling assembly 42, a feed port of the emulsification pump 41 is communicated with a bottom end of the feeding cavity 21, the gas-filling assembly 42 at least comprises a gas providing unit 421 and an annular gas-filling spout 422 located at a communication position of the emulsification pump 41 and the feeding cavity 21, and the annular gas-filling spout 422 is arranged to surround in a circumferential direction. Of course, the annular gas filling nozzle 422 may be further formed as a circular truncated cone, and the sectional area of the communication part with the feeding cavity 21 is smaller than the sectional area of the end far away from the feeding cavity 21, so as to further pressurize the introduced gas, thereby increasing the spraying distance of the gas and realizing the uniformity of gas mixing.
In a more preferred embodiment, the nozzle direction of the annular gas-entraining jet 422 is inclined upwards towards the extension of the axis of the feed opening.
The pressurizing assembly 3 may adopt any suitable pressurizing manner, for example, in a preferred embodiment, the pressurizing assembly 3 includes a pressurizing block 31 attached to the inner wall of the water pipe 1, a pump rod 32 disposed on the pressurizing block 31, and an air pump 33 disposed on the pump rod 32;
a placing plate 14 is further formed by extending the upper portion of the water outlet pipe 12 outward from the outer circumferential surface of the water pipe 1, and a cylinder 34 which surrounds the outer circumferential surface of the placing plate 14 and at least partially extends upward is further connected to the pump rod 32. The cooperating arrangement of the plate 14 and the barrel 34, and the pump rod 32, are such that a load-bearing chamber is formed into which the surfactant can be placed, and preferably a telescopic sleeve is provided outside and cooperating with the pump rod 32 to avoid the influence of direct contact between the surfactant and the pump rod 32 on the pump rod 32. In the in-service use process, when needing to exert pressure to water, pump rod 32 pushes down, drives barrel 34 and pushes down to reduce the volume of whole bearing chamber, in the in-process that water sprays to feeding chamber 21, surfactant agent also falls into feeding chamber 21, realizes going on in step of the two.
Further, the placement plate 14 is inclined obliquely downward from the inside to the outside.
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 (10)
1. The surfactant adding device for the production of the water-resistant gypsum board is characterized by comprising a water conveying pipe (1) and a feeding pipe (2) which are sequentially sleeved from inside to outside, wherein a water conveying cavity (11) for containing water is formed inside the water conveying pipe (1), a pressurizing assembly (3) capable of moving along the inner wall of the water conveying pipe (1) is further hermetically connected to the inner side wall of the water conveying pipe (1), a feeding cavity (21) for adding a surfactant is formed between the water conveying pipe (1) and the feeding pipe (2), and the bottom end of the feeding cavity (21) is communicated with an air-entrapping emulsification structure (4); wherein the content of the first and second substances,
the outer side wall of the water pipe (1) extends outwards to form a plurality of water outlet through pipes (12) which are positioned in the feeding cavity (21) and have downward openings, and the water outlet through pipes (12) are arranged at equal intervals along the circumferential direction of the water pipe (1);
the water inlet of the water outlet through pipe (12) is also provided with a pressurizing channel (13) for opening or closing the water outlet through pipe (12), and when the water pressure in the water conveying pipe (1) is greater than a preset value, the pressurizing channel (13) is opened.
2. The surfactant adding device for the production of water-resistant gypsum boards as claimed in claim 1, wherein the water outlet pipe (12) comprises a first pipe (121) and a second pipe (122) which are sequentially communicated from the water pipe (1), the first pipe (121) extends along the horizontal direction, and the second pipe (122) is inclined downwards towards the feeding pipe (2);
the water outlet through pipe (12) is communicated with the side wall of the water conveying pipe (1) and is positioned on one side, close to the bottom, of the water conveying pipe (1), and the bottom of the feeding cavity (21) is positioned below the bottom of the water conveying cavity (11).
3. The surfactant adding device for the production of water-resistant gypsum boards as claimed in claim 1 or 2, wherein the pressurizing channel (13) at least comprises an enclosing baffle (131) which is arranged in the water delivery cavity (11) and encloses the water inlet of the water outlet through pipe (12), a plurality of water outlet holes (132) which are in one-to-one correspondence with the water inlet are formed in the side surface of the enclosing baffle (131) close to the central axis of the water delivery cavity (11), an elastic baffle (133) is arranged between each group of corresponding water outlet holes (132) and the water inlet, and one side surface of the elastic baffle (133) is hinged to the inner side wall of the enclosing baffle (131).
4. The surfactant adding device for the production of the water-resistant gypsum board as claimed in claim 3, wherein an elastic membrane (134) for closing the water outlet hole (132) is attached to one side of the water outlet hole (132) close to the water outlet through pipe (12), and a through net is formed in the elastic membrane (134) at the outer periphery of the water outlet hole (132).
5. The surfactant adding device for the production of water-resistant gypsum board as claimed in claim 4, wherein said through net encloses said water outlet hole (132) and is formed in an annular structure;
and the through holes (135) on the through net are formed into honeycomb-shaped hole bodies, and the number of the through holes (135) on one side of the annular structure far away from the hinged end of the elastic baffle sheet (133) is larger than that on one side close to the hinged end.
6. The surfactant adding device for the production of the water-resistant gypsum board as claimed in claim 1 or 2, wherein the water pipe (1) is rotatably arranged relative to the feeding pipe (2), and a thread-shaped guide groove (22) is formed on the inner wall of the feeding pipe (2) and extends downwards obliquely along the vertical direction.
7. The surfactant adding device for the production of the water-resistant gypsum board according to claim 1 or 2, wherein the air-entrapping emulsification structure (4) at least comprises an emulsification pump (41) and an air-entrapping assembly (42), a feed inlet of the emulsification pump (41) is communicated with a bottom end of the feeding cavity (21), the air-entrapping assembly (42) at least comprises a gas providing unit (421) and an annular air-entrapping nozzle (422) located at a communication position of the emulsification pump (41) and the feeding cavity (21), and the annular air-entrapping nozzle (422) is arranged in a surrounding manner along the circumferential direction.
8. The surfactant adding device for the production of water-resistant gypsum boards as claimed in claim 7, wherein the nozzle direction of the annular air-entraining nozzle (422) is inclined upward toward the extension direction of the axis of the feed inlet.
9. The surfactant adding device for the production of water-resistant gypsum boards as claimed in claim 1 or 2, wherein the pressurizing assembly (3) comprises a pressurizing block (31) attached to the inner wall of the water pipe (1), a pump rod (32) arranged on the pressurizing block (31), and an air pump (33) arranged on the pump rod (32);
a placing plate (14) is formed by extending the upper part of the water outlet through pipe (12) outwards from the outer peripheral surface of the water conveying pipe (1), and a cylinder (34) which is enclosed on the outer peripheral surface of the placing plate (14) and at least partially extends upwards is connected to the pump rod (32).
10. The surfactant adding device for the production of water-resistant gypsum board as claimed in claim 9, wherein said placing board (14) is inclined obliquely downward from inside to outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010618013.0A CN111791340B (en) | 2020-06-30 | 2020-06-30 | A surfactant interpolation device for production of water-fast gypsum board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010618013.0A CN111791340B (en) | 2020-06-30 | 2020-06-30 | A surfactant interpolation device for production of water-fast gypsum board |
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| Publication Number | Publication Date |
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| CN111791340A true CN111791340A (en) | 2020-10-20 |
| CN111791340B CN111791340B (en) | 2021-08-20 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07223212A (en) * | 1993-07-12 | 1995-08-22 | Bpb Ind Plc | Method and device for manufacturing multilayer plaster board |
| CN104984698A (en) * | 2015-07-13 | 2015-10-21 | 山东科技大学 | Hydraulic pressurizing-feeding secondary foam generation apparatus |
| CN206767628U (en) * | 2017-04-23 | 2017-12-19 | 高邮市汉升高分子材料有限公司 | A kind of plasticizer quantitative adding device |
| CN210261089U (en) * | 2019-06-18 | 2020-04-07 | 四川省什邡市农科化工有限公司 | Polymer surfactant feeding device |
| 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 |
-
2020
- 2020-06-30 CN CN202010618013.0A patent/CN111791340B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07223212A (en) * | 1993-07-12 | 1995-08-22 | Bpb Ind Plc | Method and device for manufacturing multilayer plaster board |
| CN104984698A (en) * | 2015-07-13 | 2015-10-21 | 山东科技大学 | Hydraulic pressurizing-feeding secondary foam generation apparatus |
| CN206767628U (en) * | 2017-04-23 | 2017-12-19 | 高邮市汉升高分子材料有限公司 | A kind of plasticizer quantitative adding device |
| 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 |
| CN210261089U (en) * | 2019-06-18 | 2020-04-07 | 四川省什邡市农科化工有限公司 | Polymer surfactant feeding device |
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| CN111791340B (en) | 2021-08-20 |
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