CN2833271Y

CN2833271Y - Pneumatic pipe stop valve

Info

Publication number: CN2833271Y
Application number: CN 200520118746
Authority: CN
Inventors: 张德鑫; 张凯
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-09-13
Filing date: 2005-09-13
Publication date: 2006-11-01
Anticipated expiration: 2015-09-13

Abstract

The utility model relates to a pneumatic pipeline stop valve which is mainly composed of a valve body A (1) and a valve body A (2), wherein inner cavities of the valve body A (1) and the valve body A (2) are provided with a fusiform double-diversion valve clack (12) and a hollow piston (22) which move in an air cylinder cavity (25) in double directions. The push of compressed air causes the hollow piston (22) and the fusiform double-diversion valve clack (12) to contact or separate to closing and opening the stop valve. The utility model has the advantages of simple structure, low cost, simple use, maintenance and repair, reliable and flexible structure work and long service life, and is used for automated devices, such as an air separation device, a chemical industry device, a water treatment device, etc.

Description

The Pneumatic pipe stop valve

Technical field

The utility model relates to a kind of stop valve, and referring to adopt fixed spindle flap and box type piston to add seal ring moving valve seat especially is the stop valve of main structure.

Background technique

Currently marketed pneumatic valve has butterfly valve, ball valve, cylinder cut-out valve or the like, its working principle mostly is that common valve commonly used is removed manual piece, loading onto pneumatic assembles, slow motion in the use, be out of order easily, volume is big, and the connecting rod position easily produces medium and leaks outside, wearing and tearing are big, and working life is short.

The current industrial pipeline adopts control and telecontrol engineering automatically, if the special use that the design of valve can one considers that make it organically become the industrial pipeline isolated plant of control automatically, this is the current task of top priority.

Summary of the invention

According to background technique, the purpose of this utility model is to provide a kind of core of stop valve to adopt fixed spindle flap and box type piston to add the structural type of seal ring moving valve seat, the control unit straight line motion, the gas control pipe break valve of rigidity sealing.

To achieve these goals, the utility model is achieved through the following technical solutions:

A kind of Pneumatic pipe stop valve, mainly form by valve A (1) and valve B (2), wherein: an external end of valve A (1) is provided with moving flange plate (11), be shaped on the two water conservancy diversion flaps (12) of spindle in its body, the external the other end is valve A connecting end (13), it is provided with valve A Sealing (14), and is shaped on tapped hole A (15); An external end of valve B (2) is shaped on fixed flange (21), the external the other end is shaped on valve B connecting end (26), and it is provided with valve B Sealing (23), and is shaped on tapped hole B (24), box type piston (22) is set in its body, and it is provided with piston seal (27); Valve A (1) and valve B (2) are connected to become the integral body of stop valve by bolt (16), box type piston (22) can be two-way mobile in the cylinder chamber (25) that is formed by valve A (1) and valve B (2), can contact with the two water conservancy diversion flaps (12) of spindle, also can break away from the two water conservancy diversion flaps (12) of spindle, tapped hole A (15) and tapped hole B (24) communicate with cylinder chamber (25).

Owing to adopted technique scheme, the utlity model has following advantage and effect:

1, the utility model structural type novelty, employing be rigidity sealing, wear and tear easily unlike soft sealing, control unit is a straight line motion, rather than rotatablely moves, and is therefore also not easy to wear.

2, the utility model is not subjected to the influence of pressure medium, can reduce to minimum to the flow resistance of medium.

3, the utility model is simple in structure, and be several times of plain edition pneumatic valve working life, and working service is repaired simple and easy.

Description of drawings

Fig. 1 is the utility model general structure cross-sectional schematic

Embodiment

Illustrate by Fig. 1, a kind of Pneumatic pipe stop valve, mainly form by valve A 1 and valve B 2, wherein: an external end of valve A 1 is provided with moving flange plate 11, be shaped on the two water conservancy diversion flaps 12 of spindle in its body, the external the other end is a valve A connecting end 13, and it is provided with valve A Sealing 14, and is shaped on tapped hole A15; An external end of valve B 2 is shaped on fixed flange 21, and the external the other end is shaped on valve B connecting end 26, and it is provided with valve B Sealing 23, and is shaped on tapped hole B24, and box type piston 22 is set in its body, and it is provided with piston seal 27; Valve A 1 and valve B 2 are connected to become the integral body of stop valve by bolt 16, box type piston 22 can be two-way mobile in the cylinder chamber 25 that is formed by valve A 1 and valve B 2, can contact with the two water conservancy diversion flaps 12 of spindle, also can break away from the two water conservancy diversion flaps 12 of spindle, tapped hole A15 and tapped hole B24 communicate with cylinder chamber 25.

Other knows that when cylinder chamber 25 was connected pressurized air, box type piston 22 moved with the two water conservancy diversion flaps 12 of spindle to valve B 2 directions and is separated from, and forms an annulus by tapped hole A15, and medium can stitch thus and pass through.

When cylinder chamber 25 was connected pressurized air, box type piston 22 moved with the two water conservancy diversion flaps 12 of spindle to valve A 1 direction and contacts by tapped hole B24, the annulus blocking-up, and medium stops to flow.So action can make the utility model form cutting and stream medium.

Valve A 1 of the present utility model can be made into steel part or foundry goods with valve B 2, also can be made into working of plastics.

The utility model is applicable to automation equipments such as air-separating plant, chemical industry, water treatment.

Claims

1, a kind of Pneumatic pipe stop valve, mainly form by valve A (1) and valve B (2), it is characterized in that: an external end of valve A (1) is provided with moving flange plate (11), be shaped on the two water conservancy diversion flaps (12) of spindle in its body, the external the other end is valve A connecting end (13), it is provided with valve A Sealing (14), and is shaped on tapped hole A (15); An external end of valve B (2) is shaped on fixed flange (21), the external the other end is shaped on valve B connecting end (26), and it is provided with valve B Sealing (23), and is shaped on tapped hole B (24), box type piston (22) is set in its body, and it is provided with piston seal (27); Valve A (1) and valve B (2) are connected to become the integral body of stop valve by bolt (16), box type piston (22) can be two-way mobile in the cylinder chamber (25) that is formed by valve A (1) and valve B (2), can contact with the two water conservancy diversion flaps (12) of spindle, also can break away from the two water conservancy diversion flaps (12) of spindle, tapped hole A (15) and tapped hole B (24) communicate with cylinder chamber (25).

2, Pneumatic pipe stop valve according to claim 1 is characterized in that: valve A (1) can be made into steel part or foundry goods with valve B (2), also can be made into working of plastics.