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Pneumatic gate valve

A technology of pneumatic rams and rams, applied in the direction of sliding valves, valve details, valve devices, etc., can solve the problems of affecting the sealing performance of ram valves and the inability to remove deposited materials, and achieve the effect of increasing the cleaning range

Active Publication Date: 2012-06-20
LANZHOU NONGZHIPIN ECOLOGICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the installation position of the purging device of the gate valve in the prior art is symmetrically arranged along the periphery of the valve body. The removal of the deposited material, which affects the sealing of the gate valve, and then provides a pneumatic gate valve that can completely remove the deposited material in the cavity of the gate valve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 Shown is a structural diagram of the pneumatic gate valve of the present invention. The pneumatic gate valve in this embodiment includes a cylinder 1 and a piston 3 located in the cylinder 1 for resetting the position of the piston 3. A biasing force component 4; a power medium inlet and outlet 2 is provided on the cylinder body 1 below the piston 3, and the power medium inlet and outlet 2 is connected with an external air source;

[0039]A valve body 5 is connected to the cylinder body 1, a valve chamber 10 is provided at one end of the valve body 5 close to the cylinder body 1, and a gate chamber 16 is provided at the other end inside the valve body 5;

[0040] The valve body 5 is provided with a material inlet 6 and a material outlet 7, and the material inlet 6 and the material outlet 7 are communicated to form a blanking cavity 17, and the blanking cavity 17 and the material outlet 7 are connected. The gate cavity 16 is arranged vertically and comm...

Embodiment 2

[0051] Such as image 3 Shown is the structural diagram of the pneumatic gate valve provided with the air sealing device according to the present invention. Compared with the pneumatic gate valve described in embodiment 1, the gate cavity 16 is set to be rectangular in this embodiment ;

[0052] The upper side wall of the gate cavity 16 is provided with an air-tight groove 12, and an air-tight device for fixing and limiting the gate 9 is arranged inside the air-tight groove 12, and the air-tight groove 12 is connected with the set The air-tight air inlet 14 on the valve body 5 is connected; the central axis of the third purge air inlet 113 is located in the opening extension area of ​​the air-tight groove 12 close to the opening groove of the valve cavity 10 Inside; the central axis of the first purge air inlet 111 is located in the opening extension area of ​​the air seal groove 12 close to the opening groove in the opposite direction of the valve cavity 10; the air seal dev...

Embodiment 3

[0059] Such as Figure 5 Shown is the structural diagram of the gate valve provided with the scraping device according to the present invention, in this embodiment, on the basis of the structure of the foregoing embodiment 1 or embodiment 2, on one side of the gate valve There is a groove that can be embedded in the scraping device; in this embodiment, the groove is selected to be an annular groove; the scraping device is in contact with the side wall of the shutter 9, and here, the The side wall of the gate 9 refers to the side of the gate valve facing the feed inlet 6 ; the scraping device described in this embodiment is selected as a sealing strip 15 .

[0060] When the pneumatic gate valve described in this embodiment is working, the sealing strip 15 will scrape off the material particles on the gate 9 in the process of sliding relative to the gate 9 to avoid the Material particles enter the valve body 5 along with the shutter 9 .

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Abstract

The invention discloses a pneumatic gate valve. The invention is characterized in that the gate plate cavity of the pneumatic gate valve is square, and under the same working stroke, the discharge amount is multiple times of that of a round gate valve; meanwhile, a first blow air inlet, a second blow air inlet, a third blow air inlet and a fourth blow air inlet are formed on three side walls of the corresponding gate plate cavity outside a valve body; and along the flowing direction of the air flow in the gate plate cavity, the inlet air at the fourth blow air inlet on the first side wall reaches the first blow air inlet, the inlet air at the first blow air inlet reaches the second blow air inlet, the inlet air at the second blow air inlet reaches the third blow air inlet, and the inlet air at the third blow air inlet returns to the first side wall again. As the air flow forms a circulating air flow on the periphery of a material channel along the flowing direction, the problem of dead angle among the blow air inlets of the gate plate valve in the prior art is solved, the materials in the gate plate cavity can be thoroughly cleared and the sealing performance of the gate plate valve is improved.

Description

technical field [0001] The invention relates to a gate valve, in particular to a pneumatic gate valve used in an ash conveying system. technical background [0002] The gate valve is a kind of valve commonly used in the conveying pipeline, which is used to connect and cut off the discharge of materials. The opening and closing part in the gate valve is the gate. The opening and closing of the gate valve in the traditional technology, when the gate valve in the traditional technology is in use, because the material is accumulated on the gate valve and then blanked after the gate valve is opened, a small part of the As the gate valve is opened, the material will adhere to the gate plate and move along with it, which will cause the material to move into the valve cavity and deposit. Long-term accumulation will cause a gap between the gate plate and the valve cavity when it is closed, affecting the The sealing effect of the gate valve will cause the valve cavity of the gate val...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K3/02F16K3/18F16K3/30F16K3/312F16K27/04
Inventor 马月鲤王守东冯治聪王彦江
Owner LANZHOU NONGZHIPIN ECOLOGICAL TECH CO LTD
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