CN2603261Y

CN2603261Y - Power-saving stop-valve/check-valve

Info

Publication number: CN2603261Y
Application number: CN 03226746
Authority: CN
Inventors: 宁顺成
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-01-13
Filing date: 2003-01-13
Publication date: 2004-02-11
Anticipated expiration: 2013-01-13

Abstract

The utility model relates to a labor-saving stop valve/check valve which is mainly composed of a piston arranged in an inner chamber of a valve body, wherein the inner chamber of the valve body is partitioned into an inflow chamber and an outflow chamber by a flow opening of a piston sluice; the upper end of the piston is contacted with the circumambient wall of the inner chamber of the piston in a slippage mode, and a slippage closed opening is formed; the inner chamber of the piston above the slippage closed opening is a pressure chamber. The utility model is characterized in that a regulation chamber which is additionally arranged in the valve body above the pressure chamber is communicated with the pressure chamber, an auxiliary piston which is connected with the valve body by screw threads is arranged in the regulation chamber, and one end of an auxiliary piston rod extends outside the valve body and is connected with a regulation handle; an axial through hole is arranged in the center of the piston, and the inflow chamber is communicated with the outflow chamber via the axial through hole, the pressure chamber, a flow opening of an auxiliary piston sluice, the regulation chamber and an auxiliary passage in the valve body, and a spring bulb stopper is arranged in the auxiliary passage in the valve body. The stop valve of the utility model has the advantages of labor saving during operation and simple structure; a sealing ring is not easily damaged, and the utility model can also be used as a check valve.

Description

The laborsaving stop valve safety check of holding concurrently

Technical field:

The utility model relates to a kind of pipeline piston valve, the particularly stop valve safety check of holding concurrently.

Background technique:

Existing stop valve, its structure has been that the piston of lock stream seal action directly connects with lever operated part, piston had both been done upper and lower motion and had been rotated again, the sealing difficulty, cooperate tightly more than the former seal ring quantity and with piston rod, therefore surface friction drag is big, and is very painstaking when rotatable handle opens or closes valve.Fragile and normal must the replacing of seal ring.

Summary of the invention:

The purpose of this utility model is to put forward a kind of disadvantage that overcomes existing stop valve, operates light and handy labour-saving stop valve.

Technical solution of the present utility model is a kind of laborsaving stop valve safety check of holding concurrently, mainly, piston constitutes by being installed in the body cavity, piston brake head piece separator valve intracoelomic cavity is the influent stream chamber and goes out to flow the chamber, the piston upper end touches with all wall slips of piston cavity, form sliding sealed mouth, the piston cavity of sliding sealed mouth top is a pressure chamber, there is the chamber of adjusting to be communicated with in addition in the valve body of pressure chamber top with pressure chamber, regulate auxiliary piston is installed in the chamber, auxiliary piston and valve body scyewed joint, auxiliary piston rod one end stretches out valve body and connects regulating handle outward, there is axial hole at the piston center, and the influent stream chamber is through this axial hole, pressure chamber, auxiliary piston lock head piece, regulate the chamber, accessory channel in the valve body with go out to flow the chamber and be communicated with.

Description of drawings:

Fig. 1 is the laborsaving stop valve check valve structure schematic representation of holding concurrently

Embodiment:

The utility model further specifies as follows in conjunction with specific embodiments referring to accompanying drawing:

A kind of laborsaving stop valve safety check of holding concurrently, mainly, piston [2] constitutes by being installed in valve body [3] inner chamber, lock head piece [15] the separator valve intracoelomic cavity of piston [2] is influent stream chamber [1] and goes out to flow chamber [13], piston [1] upper end contacts with all wall slips of piston cavity and forms sliding sealed mouth [12], the piston cavity of sliding sealed mouth [12] top is pressure chamber [11], [10] are communicated with pressure chamber [11] through the duct in the valve body of pressure chamber [11] top adjusting chamber [7] in addition, L shaped accessory channel [9] is arranged in the valve body, connect to be communicated with and regulate chamber [7] and pressure chamber [11], regulate the auxiliary piston [4] that is equipped with in the chamber [7] with valve body [3] scyewed joint, auxiliary piston [4] constitutes auxiliary piston lock head piece with duct [10], the outer regulating handle [5] that connects of valve body [3] is stretched out in auxiliary piston [4] piston rod upper end, has seal ring [6] to cooperate connection between the piston rod of auxiliary piston [4] and valve body [4].

Be provided with a spring bulb stopper [8] in the L shaped accessory channel [9] in L shaped corner.

There is axial hole [14] at piston [2] center.The auxiliary piston lock head piece that influent stream chamber [1] is located through axial hole [14], pressure chamber [11], duct [10], regulate chamber [7], L shaped accessory channel [9] and go out to flow chamber [13] connection and be communicated with.Constitute and be communicated with influent stream chamber [1] and the earial drainage bypass that goes out to flow chamber [13].

The utility model working principle is as follows:

Going out to flow between chamber [1] and influent stream chamber [13] has the earial drainage bypass, and it is by the axial hole [14] on the piston [7], and pressure chamber [11], duct [10], adjusting chamber [7], L shaped accessory channel [9] connection constitute; In addition, it is more much smaller than main piston [2] that the auxiliary piston [4] that operating grip [5] connects bears the area of hydraulic pressure, the water pressure of bearing accordingly also can be much smaller, so operating grip [5] turn-offs piston [2] lock stream or open, and promptly turn-offs or laborsaving especially when opening stop valve.

Because in the L shaped accessory channel [9] spring bulb stopper [8] is arranged in the valve body, it plays a part an one-way valve, stop the middle liquid stream in stream chamber [13] to return influent stream chamber [1], so, but the double as safety check effect again of the utility model stop valve.

In sum, the utility model stop valve advantage is a rapid operation, and is simple in structure, and seal ring is not fragile, but the double as safety check is used simultaneously.

Claims

1, a kind of laborsaving stop valve safety check of holding concurrently, mainly, piston constitutes by being installed in the body cavity, piston brake head piece separator valve intracoelomic cavity is the influent stream chamber and goes out to flow the chamber, the piston upper end touches with all wall slips of piston cavity, form sliding sealed mouth, the piston cavity of sliding sealed mouth top is a pressure chamber, it is characterized in that having the chamber of adjusting to be communicated with in addition in the valve body of pressure chamber top with pressure chamber, regulate auxiliary piston is installed in the chamber, auxiliary piston and valve body scyewed joint, auxiliary piston rod one end stretches out valve body and connects regulating handle outward, there is axial hole at the piston center, and the influent stream chamber is through this axial hole, pressure chamber, auxiliary piston lock head piece, regulate the chamber, accessory channel in the valve body with go out to flow the chamber and be communicated with.

2, the laborsaving stop valve according to claim 1 safety check of holding concurrently is characterized in that being provided with a spring bulb stopper in the accessory channel in its valve body.