CN108501216A - Plasterboard foaming mixing equipment and method for mixing - Google Patents
Plasterboard foaming mixing equipment and method for mixing Download PDFInfo
- Publication number
- CN108501216A CN108501216A CN201810169569.9A CN201810169569A CN108501216A CN 108501216 A CN108501216 A CN 108501216A CN 201810169569 A CN201810169569 A CN 201810169569A CN 108501216 A CN108501216 A CN 108501216A
- Authority
- CN
- China
- Prior art keywords
- mixing
- foaming agent
- pump
- foaming
- mixing machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005187 foaming Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims description 10
- 239000004088 foaming agent Substances 0.000 claims abstract description 74
- 239000006260 foam Substances 0.000 claims abstract description 22
- 239000002002 slurry Substances 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000010440 gypsum Substances 0.000 claims description 17
- 229910052602 gypsum Inorganic materials 0.000 claims description 17
- 239000002994 raw material Substances 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 14
- 241000132536 Cirsium Species 0.000 abstract description 7
- 239000011148 porous material Substances 0.000 abstract description 6
- 230000003247 decreasing effect Effects 0.000 abstract description 5
- 230000005587 bubbling Effects 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 230000001413 cellular effect Effects 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 description 4
- 241000197194 Bulla Species 0.000 description 3
- 208000002352 blister Diseases 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003752 improving hair Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
Classifications
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Nozzles (AREA)
Abstract
The plasterboard foaming mixing equipment of the present invention, foaming agent storage tank pump by foaming agent conveyance conduit successively foamed dose of pump, foaming mixing pump, a pair of of air exercise and are connected to mixing machine, and clear water entrance, compressed air inlet are connected between foaming agent pump and foaming mixing pump；The outlet of foaming agent conveyance conduit is arranged on the outside of mixing machine discharge port；The point of addition of foaming agent is exported from mixing machine internal adjustment to mixing machine, and export direction and mixing machine rotation direction are tangent, ensure that the mixed effect of foaming agent and slurry, while being decreased foaming agent and being lost in mixing machine internal foam；Pass through the adjustment and control of foamed system, Thistle board plate core is transformed into cellular air pore structure from closely knit stingy pore structure, weight is reduced under the premise of ensureing panel strength and adhesive property, improve toughness, it overcomes poor toughness, be easy the shortcomings of moisture absorption and deformation, foaming effect can be improved, improve bubbling efficiency.
Description
Technical field
The present invention relates to a kind of plasterboard foaming mixing equipment and method for mixing.
Background technology
Plasterboard material generally reaches the effect for mitigating weight, improving sound insulation value, enhancing toughness by adding foaming agent
Fruit, foaming agent be added in other raw material in mixing machine mix after from mixing machine outlet get after, into formation system at
Type, conventional foaming agents adding mouth are arranged inside mixing machine, and foaming agent is in mixing machine with other raw material one in mixing machine
Mixing is played, and foaming agent is with other raw material that foaming agent will produce certain loss in mixed process in mixing machine, influences to foam
The uniformity of efficiency and plate core stomata.
Invention content
It can improve foaming effect the technical problem to be solved by the invention is to provide a kind of, improve the gypsum of bubbling efficiency
Plate foaming mixing equipment and method for mixing.
The plasterboard foaming mixing equipment of the present invention, including raw material mixing machine, mixing machine are connected with foaming agent storage tank,
It is characterized in that：Foaming agent storage tank passes through foaming agent conveyance conduit successively foamed dose of pump, foaming mixing pump, a pair of of air exercise pump connection
To mixing machine, clear water entrance, compressed air inlet are connected between foaming agent pump and foaming mixing pump；Foaming agent delivery pipe is said
Mouth is arranged on the outside of mixing machine discharge port；
Abacus is arranged in the foaming agent conveyance conduit outlet, and multiple discharge holes are evenly arranged on orifice plate；
The pair of air exercise pump includes the first opposite air exercise pump of direction of rotation, the second air exercise pump；
The mixing machine is drum mixer, and foaming agent conveyance conduit is set with mixing machine linkage section along mixing machine tangential direction
It sets；
The foaming agent conveyance conduit discharging direction is consistent with mixing machine direction of rotation；
The first air exercise pump is that power frequency operates in the pair of air exercise pump, and the second air exercise pump frequency is 38Hz；
The invention further relates to a kind of plasterboard method for mixing, it is characterised in that：Include the following steps：
A. gypsum slurry delivers into mixing machine and is stirred；
B. start foaming agent pump, by foaming agent raw material by foaming agent storage tank by pipeline to the mixing pump that foams, while it is defeated
Enter compressed air, clear water, air exercise pump air exercise foaming is delivered to after foaming mixing pump mixing；
C. gypsum slurry is added to from the outside of mixing machine discharge port in gypsum slurry from mixing machine discharge hole for discharge, foaming agent；
D. gypsum slurry, foaming agent are delivered to formation system molding.
The plasterboard foaming mixing equipment and method for mixing of the present invention, has the advantages that：
1. the point of addition of foaming agent is exported from mixing machine internal adjustment to mixing machine, export direction and mixing machine rotation direction
It is tangent, it ensure that the mixed effect of foaming agent and slurry, while decreasing foaming agent and being lost in mixing machine internal foam；
2. the outlet for the pipeline that foams is changed to the baffle being made of several mesh by original straight-through pipe, on the one hand can make
The mixed effect of foaming agent and gypsum slurry is more preferable；On the other hand the pressure that can increase foaming agent outlet exports mixing machine
There is certain cleaning action.
It pumps 3. former foam Preparation equipment is two air exercises, is operated with power frequency, we fight each other second pump frequency tune now
It is whole to arrive 38Hz, foam inside pressure is changed, vesicle is made to be easier to be fused into bulla.
By the adjustment and control of foamed system, Thistle board plate core is transformed into cellular from closely knit stingy pore structure
Air pore structure effectively reduces the weight of plank under the premise of ensureing panel strength and adhesive property, assigns simultaneously
The excellent toughness of Thistle board overcomes previous Thistle board poor toughness, is easy the shortcomings of moisture absorption and deformation, can improve hair
Effect is steeped, bubbling efficiency is improved.
Description of the drawings
Fig. 1 is that foaming agent inlet in the prior art is arranged in mixing machine internal structure schematic diagram；
Fig. 2 is the plasterboard foaming mixing equipment planar structure schematic diagram of the embodiment of the present invention；
Fig. 3 is plasterboard foaming mixing equipment foaming agent conveyance conduit outlet and the mixing machine pelvic outlet plane knot of the embodiment of the present invention
Structure schematic diagram；
Fig. 4 is the orifice plate planar structure signal of the foaming agent conveyance conduit outlet of plasterboard of embodiment of the present invention foaming mixing equipment
Figure.
Specific implementation mode
The mixing equipment as shown, a kind of plasterboard foams, including raw material mixing machine 1, mixing machine 1 are connected with foaming agent
Storage tank 6, foaming agent storage tank 6 are connected by foaming agent conveyance conduit 9 successively foamed dose of pump 7, foaming mixing pump 8, a pair of of air exercise pump
It is connected to mixing machine 1, clear water entrance 5, compressed air inlet 4 are connected between foaming agent pump 7 and foaming mixing pump 8；Foaming agent is defeated
The outlet of pipeline 9 is sent to be arranged on the outside of the discharge port of mixing machine 1, the point of addition of foaming agent is from 1 internal adjustment of mixing machine to mixed
Conjunction machine exports, and ensure that the mixed effect of foaming agent and slurry, while decreasing foaming agent and being lost in mixing machine internal foam.
Abacus is arranged in the outlet of foaming agent conveyance conduit 9, and multiple discharge holes are evenly arranged on orifice plate；On the one hand can make
The mixed effect of foaming agent and gypsum slurry is more preferable；On the other hand the pressure that can increase foaming agent outlet exports mixing machine
There is certain cleaning action.
A pair of air exercise pump includes first opposite the 3, second air exercise of air exercise pump pump 2 of direction of rotation, the first air exercise pump 3 therein
It is operated for power frequency, the second air exercise 2 frequencies of pump are 38Hz, and the air exercise pump that a pair of of direction is opposite, frequency is different changes foam inside
Pressure makes vesicle be easier to be fused into bulla.
A pair of air exercise pump the first air exercise the 3, second air exercise of pump pump 2 is all centrifugal pump, and operation principle is：First air exercise pump 3 will
The mixture of foaming agent, water and compressed air is transported to the outlet of the second air exercise pump 2, and mixture hits the leaf of the second air exercise pump 2
Wheel, generates fine and closely woven uniform unstable foam, and foam is gone out from the import of the second air exercise pump 2 until mixing machine discharge port position
It sets, is sufficiently mixed with slurry.
The effect of different frequency：The frequency for reducing the second air exercise pump 2 is mainly the pressure reduced in pipeline, improves foaming agent
Mixture impact force further decreases the stability of foam, improves degrees of fusion of the foam in slurry, and then generate uniform bee
Nest shape structure.
Mixing machine 1 is drum mixer, and foaming agent conveyance conduit 9 is with mixing machine linkage section along the tangent line side of mixing machine 1
To setting, 9 discharging direction of foaming agent conveyance conduit is consistent with mixing machine direction of rotation；1 turn of foaming agent export direction and mixing machine
Dynamic direction is tangent, ensure that the mixed effect of foaming agent and gypsum slurry, while decreasing foaming agent and being steeped inside mixing machine
Foam loses.
The invention further relates to a kind of plasterboard method for mixing, include the following steps：
A. gypsum slurry delivers into mixing machine and is stirred；
B. start foaming agent pump, by foaming agent raw material to foaming agent storage tank by pipeline to the mixing pump that foams, while it is defeated
Enter compressed air, clear water, air exercise pump air exercise foaming is delivered to after foaming mixing pump mixing；
C. gypsum slurry is added to from the outside of mixing machine discharge port in gypsum slurry from mixing machine discharge hole for discharge, foaming agent；
D. gypsum slurry, foaming agent are delivered to formation system molding.
The plasterboard foaming mixing equipment and method for mixing of the present invention, has the advantages that：
The point of addition of foaming agent is exported from mixing machine internal adjustment to mixing machine, export direction and mixing machine rotation direction phase
It cuts, ensure that the mixed effect of foaming agent and slurry, while decreasing foaming agent and being lost in mixing machine internal foam；
The outlet for the pipeline that foams is changed to the baffle being made of several mesh by original straight-through pipe, on the one hand can make hair
The mixed effect of infusion and gypsum slurry is more preferable；On the other hand the pressure that can increase foaming agent outlet has mixing machine outlet
Certain cleaning action.
Former foam Preparation equipment pumps for two air exercises, is operated with power frequency, we adjust the second air exercise pump frequency now
To 38Hz, foam inside pressure is changed, vesicle is made to be easier to be fused into bulla.
By the adjustment and control of foamed system, Thistle board plate core is transformed into cellular from closely knit stingy pore structure
Air pore structure effectively reduces the weight of plank under the premise of ensureing panel strength and adhesive property, assigns simultaneously
The excellent toughness of Thistle board overcomes previous Thistle board poor toughness, is easy the shortcomings of moisture absorption and deformation, can improve hair
Effect is steeped, bubbling efficiency is improved.
Claims (7)
- The mixing equipment 1. a kind of plasterboard foams, including raw material mixing machine, mixing machine are connected with foaming agent storage tank, and feature exists In：Foaming agent storage tank is connected to mixing by foaming agent conveyance conduit successively foamed dose of pump, foaming mixing pump, a pair of of air exercise pump Machine is connected with clear water entrance, compressed air inlet between foaming agent pump and foaming mixing pump；Foaming agent conveyance conduit outlet setting On the outside of mixing machine discharge port.
- 2. plasterboard foaming mixing equipment according to claim 1, it is characterised in that：The foaming agent conveyance conduit outlet is set It is equipped with orifice plate, multiple discharge holes are evenly arranged on orifice plate.
- 3. plasterboard foaming mixing equipment according to claim 1, it is characterised in that：The pair of air exercise pump includes rotation side To the first opposite air exercise pump, the second air exercise pump.
- 4. plasterboard foaming mixing equipment according to claim 1, it is characterised in that：The mixing machine mixes for cylindrical shape Machine, foaming agent conveyance conduit are arranged with mixing machine linkage section along mixing machine tangential direction.
- 5. plasterboard foaming mixing equipment according to claim 1, it is characterised in that：Foaming agent conveyance conduit discharging side To consistent with mixing machine direction of rotation.
- 6. plasterboard foaming mixing equipment according to claim 1, it is characterised in that：First air exercise in the pair of air exercise pump Pump is that power frequency operates, and the second air exercise pump frequency is 38Hz.
- 7. a kind of plasterboard method for mixing for the mixing equipment that foamed using plasterboard described in claim 1~7, it is characterised in that： Include the following steps：A. gypsum slurry delivers into mixing machine and is stirred；B. start foaming agent pump, by foaming agent raw material to foaming agent storage tank by pipeline to the mixing pump that foams, while it is defeated Enter compressed air, clear water, air exercise pump air exercise foaming is delivered to after foaming mixing pump mixing；C. gypsum slurry is added to from the outside of mixing machine discharge port in gypsum slurry from mixing machine discharge hole for discharge, foaming agent；D. gypsum slurry, foaming agent are delivered to formation system molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810169569.9A CN108501216A (en) | 2018-03-01 | 2018-03-01 | Plasterboard foaming mixing equipment and method for mixing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810169569.9A CN108501216A (en) | 2018-03-01 | 2018-03-01 | Plasterboard foaming mixing equipment and method for mixing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108501216A true CN108501216A (en) | 2018-09-07 |
Family
ID=63377080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810169569.9A Pending CN108501216A (en) | 2018-03-01 | 2018-03-01 | Plasterboard foaming mixing equipment and method for mixing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108501216A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110788996A (en) * | 2019-10-31 | 2020-02-14 | 淮南北新建材有限公司 | Gypsum board core micropore foaming system and method |
| CN111791370A (en) * | 2020-06-30 | 2020-10-20 | 故城北新建材有限公司 | Water-resistant gypsum board production system and production method |
| CN112318701A (en) * | 2020-11-05 | 2021-02-05 | 泰山石膏(包头)有限公司 | Preparation method of light gypsum plasterboard |
| CN113942120A (en) * | 2021-11-18 | 2022-01-18 | 北新集团建材股份有限公司 | Foaming and mixing system for desulfurized gypsum slurry |
| CN114368065A (en) * | 2021-12-15 | 2022-04-19 | 广东天凛高新科技有限公司 | Cast-in-place wall gypsum foam adding device and adding method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201410700Y (en) * | 2009-03-25 | 2010-02-24 | 泰山石膏股份有限公司 | Paperbacked plasterboard combined dynamic foaming device |
| CN104308991A (en) * | 2014-09-03 | 2015-01-28 | 河南华泰建材开发有限公司 | Foam concrete density automatic control system and method based on PLC technology |
| CN204544016U (en) * | 2015-02-12 | 2015-08-12 | 镇江北新建材有限公司 | A kind of sparger |
| CN205148613U (en) * | 2015-11-06 | 2016-04-13 | 李秀平 | Mixer blender |
| WO2017081803A1 (en) * | 2015-11-13 | 2017-05-18 | 株式会社日立産機システム | Gas compressor |
| CN107030856A (en) * | 2017-05-09 | 2017-08-11 | 宁波北新建材有限公司 | A kind of method for improving gypsum board manufacture foam stability |
| CN107521029A (en) * | 2016-06-21 | 2017-12-29 | 中国科学院成都有机化学有限公司 | A kind of melamine foam microwave continuous foaming preparation system and method |
| CN206937630U (en) * | 2017-07-19 | 2018-01-30 | 泰山石膏（辽宁）有限公司 | A kind of online foam device of gypsum board manufacture |
-
2018
- 2018-03-01 CN CN201810169569.9A patent/CN108501216A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201410700Y (en) * | 2009-03-25 | 2010-02-24 | 泰山石膏股份有限公司 | Paperbacked plasterboard combined dynamic foaming device |
| CN104308991A (en) * | 2014-09-03 | 2015-01-28 | 河南华泰建材开发有限公司 | Foam concrete density automatic control system and method based on PLC technology |
| CN204544016U (en) * | 2015-02-12 | 2015-08-12 | 镇江北新建材有限公司 | A kind of sparger |
| CN205148613U (en) * | 2015-11-06 | 2016-04-13 | 李秀平 | Mixer blender |
| WO2017081803A1 (en) * | 2015-11-13 | 2017-05-18 | 株式会社日立産機システム | Gas compressor |
| CN107521029A (en) * | 2016-06-21 | 2017-12-29 | 中国科学院成都有机化学有限公司 | A kind of melamine foam microwave continuous foaming preparation system and method |
| CN107030856A (en) * | 2017-05-09 | 2017-08-11 | 宁波北新建材有限公司 | A kind of method for improving gypsum board manufacture foam stability |
| CN206937630U (en) * | 2017-07-19 | 2018-01-30 | 泰山石膏（辽宁）有限公司 | A kind of online foam device of gypsum board manufacture |
Non-Patent Citations (2)
| Title |
|---|
| 邓想珍、赖寿宏: "《异步电动机变频调速系统及其应用》", 30 September 1992, 华中理工大学出版社, pages: 113 - 114 * |
| 闫友静、于世峰、张贺: "纸面石膏板板芯气孔结构的影响因素及控制", 《新型建筑材料》, vol. 44, no. 2017, 25 October 2017 (2017-10-25), pages 77 - 80 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110788996A (en) * | 2019-10-31 | 2020-02-14 | 淮南北新建材有限公司 | Gypsum board core micropore foaming system and method |
| CN111791370A (en) * | 2020-06-30 | 2020-10-20 | 故城北新建材有限公司 | Water-resistant gypsum board production system and production method |
| CN111791370B (en) * | 2020-06-30 | 2021-10-19 | 故城北新建材有限公司 | Water-resistant gypsum board production system and production method |
| CN112318701A (en) * | 2020-11-05 | 2021-02-05 | 泰山石膏(包头)有限公司 | Preparation method of light gypsum plasterboard |
| CN112318701B (en) * | 2020-11-05 | 2022-04-19 | 泰山石膏(包头)有限公司 | Preparation method of light gypsum plasterboard |
| CN113942120A (en) * | 2021-11-18 | 2022-01-18 | 北新集团建材股份有限公司 | Foaming and mixing system for desulfurized gypsum slurry |
| CN114368065A (en) * | 2021-12-15 | 2022-04-19 | 广东天凛高新科技有限公司 | Cast-in-place wall gypsum foam adding device and adding method |
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