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Integral molding method of pressure-change gas-exhaust type air vent

A technology of integral molding and exhaust channels, applied in the direction of prefabricated components, etc., can solve the problems of material cost, labor cost increase, easy falling off, etc., and achieve the effect of not easy falling off, saving material cost and labor cost

Inactive Publication Date: 2008-10-08
张琦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the above-mentioned direct press-in method, the guide pipe and Venturi plate are easy to fall off during the pipeline handling and installation; the above-mentioned bolt fixing method will increase the cost of materials and labor

Method used

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  • Integral molding method of pressure-change gas-exhaust type air vent
  • Integral molding method of pressure-change gas-exhaust type air vent
  • Integral molding method of pressure-change gas-exhaust type air vent

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Embodiment 1: Integral molding method of a pressure-changing air-drawing exhaust channel provided with a guide pipe and a Venturi plate

[0032] The specific steps of this embodiment are as follows, as Figure 1 to Figure 16 Shown:

[0033] 1. See figure 1 with figure 2 , use cement mortar material to make semi-finished guide pipe 1, and when semi-finished guide pipe 1 is hardened, the inner surface of semi-finished guide pipe 1 is smooth and flat, and welded mesh is placed on the outer surface as structural reinforcement material 2 of cement mortar, and reinforcement material 2 is laid out The area is greater than the peripheral surface of the semi-finished guide tube 1, and the air outlet end face 101 of the semi-finished guide tube 1 is equal to the thickness of the finished guide tube;

[0034] 2. On the flat and smooth concrete ground 5, two side molds 3 and two end frame molds 4 of the exhaust duct formwork are supported, such as image 3 with Figure 4 show...

Embodiment 2

[0041] Embodiment 2: Integral molding method of the pressure-changing air-drawing type exhaust channel whose pressure-changing component is a Venturi plate

[0042] The concrete steps of this embodiment are as follows:

[0043] 1. Two side molds and two end frame molds are supported on the flat and smooth concrete ground or bottom mold;

[0044] 2. Set the pipe wall of the intake surface of the exhaust duct as the side close to the ground, and wipe the cement mortar on the pipe wall of the intake surface of the exhaust duct to meet the thickness requirements of the pipe wall;

[0045] 3. Wipe the cement mortar on the pipe wall on both sides of the exhaust duct. After meeting the thickness requirements of the pipe wall, set up the Venturi plate bottom form. Place the prepared flat top form on the opening surface of the plate, smooth the cement mortar on the flat top form and make it integrated with the cement mortar on the pipe walls on both sides of the exhaust duct as a whol...

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PUM

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Abstract

The invention relates to a method for integrally forming a variable-pressure draft type exhaust port; cement mortar materials are used for manufacturing the exhaust port as well as manufacturing a variable-pressure component in the process of manufacturing the exhaust port so as to make an integral molding of the variable-pressure component; the variable-pressure component is a deflection tube and / or a venturi plate. The method for integrally forming the variable-pressure draft type exhaust port is applicable to the manufacturing of the exhaust port of a kitchen or a toilet, the manufacturing cost is lower, moreover the obtained extract port is combined firmly with the variable-pressure component which is uneasily dropped off.

Description

technical field [0001] The invention relates to a method for manufacturing a pressure-changing air-drawing exhaust duct used in kitchens and toilets. Background technique [0002] The cement mortar thin-wall exhaust pipes used in kitchens and toilets are made of cement mortar materials for supporting molds on the ground. The pressure-changing exhaust type exhaust channel is provided with a pressure-changing component in the exhaust pipe----a guide pipe and / or a Venturi plate. At present, the guide pipes and Venturi plates of pressure-variable exhaust pipes are all prefabricated finished products. They are directly pressed into the thin-walled pipe wall of cement mortar when making the exhaust pipe, or guide the finished product after the pipe is hardened. The tube and Venturi plate are fixed on the tube wall with bolts. Using the above-mentioned direct pressing method, the guide pipe and the Venturi plate are very easy to fall off during the pipeline handling and installat...

Claims

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Application Information

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IPC IPC(8): B28B21/70B28B21/74
Inventor 张琦
Owner 张琦