Bentonite waterproof board and method and special device for manufacturing same

A technology of bentonite and waterproof board, which can be used in protection devices, chemical instruments and methods, natural mineral layered products, etc., and can solve difficulties. Increase project cost and other issues to achieve the effect of improving paving efficiency, saving materials and reducing project cost

Inactive Publication Date: 2010-11-17
北京建都设计研究院有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional bentonite waterproof board is filled with modified sodium bentonite into honeycomb paper, and used as a waterproof material in engineering by using stable expansion. Due to the limited thickness and area, the application is limited. At present, two sides are generally used. The bentonite is sandwiched in the middle of the non-woven fabric. The upper and lower layers of non-woven fabric and the sandwiched bentonite are fixed by acupuncture to prevent the bentonite from moving in the middle. The width of this waterproof material can reach 2-4 meters, and the length of each roll is More than 30 meters, due to the heavy weight, it is difficult to pave, and the thickness can only be 5mm. If it is thicker, it will not be pierced and cannot be fixed. However, the waterproof requirement is 10-15mm or even thicker, so the only way to increase the number of layers is to increase the number of layers. Difficult paving, large investment, slow construction progress, and high project cost. In order to prevent the contact between high-alkaline bentonite and cement, a layer of plastic film should be added between the bentonite waterproof material and cement in the current project. A process also increases the project cost

Method used

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  • Bentonite waterproof board and method and special device for manufacturing same
  • Bentonite waterproof board and method and special device for manufacturing same
  • Bentonite waterproof board and method and special device for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] combine image 3 Schematic diagram of special equipment of the present invention and Figure 4The schematic diagram of the bentonite pretreatment equipment shown further explains: to produce bentonite waterproof board products with a thickness of 20mm, a board length of 2440mm, a width of 1220mm, and an overlapping edge of 50mm, a shaping device composed of a pressure belt machine, a retaining roller and a side plate is used, and the belt width is 1220mm+ The width of the overlapping side is 50mm×2, which is 1320mm, the length of the side plate is 2440mm+50mm, which is 2490mm, the two ends are chamfered at 25×45°, and the thickness is 20mm, while the thickness of the partition is 20mm, the length is 1270mm, and the width is 50mm.

[0034] The bentonite powder is evenly added with a length of 10mm glass fiber when running on the screw agitating conveyor 6, and then methyl cellulose is made into a 1% aqueous solution and sprayed on the surface of the bentonite and glass f...

Embodiment 2

[0039] With the equipment and bentonite pretreatment equipment and method of embodiment 1, produce thickness 15mm, board length 2000mm, the waterproof board product of 80mm of overlapping edge, select the shaping device that horizontal belt conveyor, pressure belt conveyor, retaining roller and side plate are formed, belt The width is 1320mm, the actual plate width is 1160mm, the side plate length is 2000mm+80mm, which is 2080mm, the height is 15mm, the partition height is 15mm, the length is 1240mm, and the width is 80mm.

[0040] When the bentonite powder is running on the screw agitating conveyor, evenly add plant fibers with a length of 15 mm, and then use carboxymethyl cellulose to make a 2% aqueous solution and spray it on the surface of the homogenized bentonite for humidification treatment, with a moisture content of 9%. , and then transported to the bentonite filler bin 7 for subsequent use, and then by the method of embodiment 1 and special equipment, the bottom layer...

Embodiment 3

[0042] The bentonite powder is stirred and conveyed on the screw conveyor, and the man-made fibers with a length of 12 mm are evenly added, and then ethyl cellulose is made into a 3% aqueous solution and sprayed on the surface of the homogenized bentonite for humidification treatment. The moisture content is 8%, and then transported to the bentonite filling bin for later use,

[0043] Select a sizing device composed of a horizontal belt conveyor, a pressure belt conveyor and a non-transmission belt, cancel the side plates or partitions of the sizing device in Example 1, and then install non-woven fabrics on the retaining rollers on both sides of the pressure section of the upper and lower belts. Driving belt (not shown in the figure) forms pressure chamber simultaneously, and the plate produced at this moment is continuous, needs to set up cutting machine after upper and lower belt, cuts plate according to required length, all the other are with the method and special equipment...

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Abstract

The invention relates to a waterproof board made of bentonite. The invention is characterized in that the surface layer of a mainboard is provided with non-woven fabrics and the bottom layer thereof is provided with plastic films or woven fabrics; fibers are uniformly blended between the surface layer and the bottom layer; the bentonite is humidified by cellulose aqueous solution; the surface layer, the bentonite and the bottom layer are processed into an integral mainboard through mechanical pressurizing; and lapping edges extend from the two adjacent edges of the plastic films or woven fabrics on the bottom layer or the four edges of the mainboard are assembled into a plane interface or concave and convex falcon mouths are arranged at the two side ends of the mainboard. The waterproof board has the advantages and effects of one-step molding, randomly adjustable thickness, high paving efficiency, simplified flow, lowered construction costs, good production environment protection and continuous, mechanical and automatic production.

Description

technical field [0001] The invention relates to a waterproof board, in particular to a waterproof board made of bentonite, which belongs to the field of building material waterproofing. [0002] The invention also relates to a manufacturing method and a special device for the waterproof board. Background technique [0003] The traditional bentonite waterproof board is filled with modified sodium bentonite into honeycomb paper, and used as a waterproof material in engineering by using stable expansion. Due to the limited thickness and area, the application is limited. At present, two sides are generally used. The bentonite is sandwiched in the middle of the non-woven fabric. The upper and lower layers of non-woven fabric and the sandwiched bentonite are fixed by acupuncture to prevent the bentonite from moving in the middle. The width of this waterproof material can reach 2-4 meters, and the length of each roll is More than 30 meters, due to the heavy weight, it is difficult...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D31/02E02D31/04E04B1/66B32B19/06
Inventor 安保良
Owner 北京建都设计研究院有限责任公司
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