CN2713233Y

CN2713233Y - Hydraulic control valve

Info

Publication number: CN2713233Y
Application number: CN 200420077579
Authority: CN
Inventors: 张骥
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-07-12
Filing date: 2004-07-12
Publication date: 2005-07-27
Anticipated expiration: 2014-07-12

Abstract

The utility model discloses a hydraulic control valve, comprising a water-inlet valve body, a water-outlet valve body and a valve shaft. The water-inlet valve body is provided with a connecting opening communicated with the inlet of a controlling pipe, and the controlling pipe is provided with a first controlling ring and a second controlling ring. A working chamber is arranged in the water-outlet valve body, and the working chamber is communicated with the controlling pipe positioned between the first controlling ring and the second controlling ring. The right end of the valve shaft is right and left slideably inserted into the right side wall of the working chamber, the middle part of the valve shaft is provided with a piston, and the right side wall of the valve shaft positioned in the piston and the working chamber is sheathed with a spring. The outer cycle of the piston can be matched with the inner cycle of a cylinder liner in a sliding mode, and a sealing element is provided between the matching surfaces. A cylinder liner is arranged at the left end of the inside of the working chamber, the left end surface of the piston is provided with a sealing ring, and the sealing ring is matched with the water discharging outlet of the water-inlet valve body. The aim of the utility model is to provide ahydraulic control valve with small flow-resisting coefficient, large flow coefficient and strong pitting-resistant ability. The liquid dielectric can flow stable.

Description

Hydraulic control valve

Technical field

The utility model relates to a kind of hydraulic control valve.

Background technique

Hydraulic control valve is a kind of pressure that utilizes the liquid medium that transmits in the pipeline, realizes valve opening, closes or regulate and control the valve of aperture size by means of hydraulic control valve inner carrier driving mechanism.Existing hydraulic control valve is to utilize single piston drive, and along the Vertical direction of main valve liquid inlet and outlet axis, hydraulic control valve is opened or closed to the pressure that acts on piston by change.And open or close hydraulic control valve along the Vertical direction of main valve liquid inlet and outlet axis, it is bigger to cause flowing medium in the pipeline to be the variation of turbulent flow and flow velocity, and area of passage is little, therefore cause serious cavitation erosion in the valve body, flow coefficient is little, flow resistance coefficient is big, and is easy to cause the high vibration of pipe-line system.

The model utility content

The purpose of this utility model provides the hydraulic control valve that a kind of flow resistance coefficient is little, flow coefficient big, the anti-cavitation ability is strong, liquid medium is steadily flow through.

For achieving the above object, the utility model provides a kind of hydraulic control valve, comprise into water valve body, water outlet valve body and valve shaft, the water inlet valve body has the connection mouth that communicates with the pilot line import, on pilot line, have first control ring and second control ring, be provided with active chamber in the described water outlet valve body, active chamber communicates with pilot line between first control ring and second control ring, can be inserted into slidably about the right-hand member of described valve shaft on the right side wall in the active chamber, the middle part of valve shaft is equipped with piston, be set with spring between the right side wall on the valve shaft in piston and active chamber, the cylindrical of piston can match with the interior circle of cylinder sleeve slidably, be provided with Sealing between its fitting surface, described cylinder sleeve is installed in the left end in the active chamber, the left side of described piston is provided with seal ring, and seal ring matches with the drain opening of described water inlet valve body.

Hydraulic control valve of the present utility model, wherein said seal ring adopt pressing plate to fix, and the drain opening place of described water inlet valve body is set with valve seat, and described seal ring matches with the right side of valve seat.

Hydraulic control valve of the present utility model, the left end of wherein said piston withstands on the right-hand member of described pressing plate, the left end of pressing plate withstands on the shaft shoulder of described valve shaft, the right-hand member of described piston adopts the nut location of two spinnings on described valve shaft, and described water inlet valve body adopts a plurality of bolts to link to each other with described water outlet valve body.

Hydraulic control valve of the present utility model, the middle part of the drain opening of wherein said water inlet valve body is provided with supporting frame, can be inserted on the supporting frame slidably about the left end of described valve shaft.

Hydraulic control valve described in the utility model, the liquid inlet and outlet of its valve body is on the same axis, the variation of passing the moving direction of flowing medium of valve body and flow velocity is less, area of passage in the valve body is not less than the area of liquid in-out mouth, the characteristics that volume is little, flow resistance coefficient is little, flow coefficient is big so hydraulic control valve of the present utility model has, the anti-cavitation ability strong, can make liquid medium steadily flow through.

Below in conjunction with accompanying drawing hydraulic control valve of the present utility model is described in further detail.

Description of drawings

Fig. 1 is the main pseudosection of hydraulic control valve described in the utility model.

Embodiment

Referring to Fig. 1, hydraulic control valve described in the utility model, comprise into water valve body 1, water outlet valve body 10 and valve shaft 2, water inlet valve body 1 adopts 4-8 bolt 13 to link to each other with water outlet valve body 10, water inlet valve body 1 has the connection mouth that communicates with pilot line 20 imports, on pilot line 20, have first control ring 21 and second control ring 22, be provided with active chamber 23 in the water outlet valve body 10, active chamber 23 communicates with pilot line 20 between first control ring 21 and second control ring 22, can be inserted into slidably about the right-hand member of valve shaft 2 on the right side wall in the active chamber 23, the middle part of valve shaft 2 is equipped with piston 6, be set with spring 9 between the right side wall on the valve shaft 2 in piston 6 and active chamber 23, the cylindrical of piston 6 can match with the interior circle of cylinder sleeve 7 slidably, be provided with Sealing 12 between its fitting surface, cylinder sleeve 7 is installed in the left end of active chamber interior 23, the left side of piston 6 is provided with seal ring 4, seal ring 4 adopts pressing plate 3 fixing, drain opening place at water inlet valve body 1 is set with valve seat 5, and seal ring 4 matches with the right side of valve seat 5.

The left end of piston 6 withstands on the right-hand member of pressing plate 3, and the left end of pressing plate 3 withstands on the shaft shoulder of valve shaft 2, and the right-hand member of piston 6 adopts nut 11 location of two spinnings on described valve shaft 2.

For bigbore hydraulic control valve, can be provided with supporting frame 14 at the middle part of drain opening of water inlet valve body 1, make about the left end of valve shaft 2 and can be inserted into slidably on the supporting frame 14.

Described front valve shell 1 has the connection mouth with pilot line 20, the liquid entering hole that is pilot line 20 is out in the higher hydraulic control valve inlet of pressure, on pilot line 20, have first control ring 21 and second control ring 22, described first control ring 21 is needle-valve, stop valve or other pilot valve, second control ring 22 is ball valve, one-way valve, solenoid valve or is other pilot valve, has passage and be connected with active chamber 23 between two control rings.

Below hydraulic control valve of the present utility model is analyzed as follows:

1, the full-gear of valve

When first control ring 21 on the pilot line 20 and second control ring 22 all are in opening state, because the area of passage of control ring 22 greater than the area of passage of control ring 21, at this moment, does not have pressure substantially in the active chamber 23.When liquid medium enters the hydraulic control valve import, promptly apply enough upstream pressure P1 and give pressing plate 3, overcome the active force of spring, valve will be opened, and in fact, the active force of spring is very little, it only plays a part auxiliary, and therefore, the active force of unlatching is greater than the active force of closing.

First control ring 21 on pilot line 20 is opened, when the second system ring 22 is closed, because the liquid entering hole of pilot line 20 is out in the higher hydraulic control valve inlet of pressure, simultaneously because piston 6 bears the area of passage S of the area of pressure greater than water inlet valve body 1 liquid entering hole in active chamber 23, under the higher pressure effect, the liquid that flows to the active chamber 23 that communicates with pilot line 20 by control ring 21 can increase gradually, in spring 9 and active chamber 23 under the acting in conjunction of liquid pressure, make the left end motion of piston 6 towards the pressure lower pressure, drive pressing plate 3 simultaneously towards one end motion of water inlet valve body 1 liquid entering hole, valve seat 5 on making pressing plate 3 and being fixed on water valve body 1 into matches, and makes hydraulic control valve be in full closing state.

Hydraulic control valve of the present utility model, by changing control ring 21, the control ring 22 on the pilot line 20, can make it become decompression venting valve, remote control float valve, slowly closed silencing check valve, hydro electric brake control valve, flow control valve, pressure release and hold valves such as pressing safety valve, two altitude valves, emergency shut-in valve, the alarm valve that drenches with rain.

Embodiment recited above is described preferred implementation of the present utility model; be not that design of the present utility model and scope are limited; do not breaking away under the utility model design proposal prerequisite; common engineers and technicians make the technical solution of the utility model in related domain various modification and improvement; all should fall into protection domain of the present utility model; the technology contents that the utility model is asked for protection all is documented in claims.

Claims

1. hydraulic control valve, comprise into water valve body (1), water outlet valve body (10) and valve shaft (2), water inlet valve body (1) has the connection mouth that communicates with pilot line (20) import, on pilot line (20), have first control ring (21) and second control ring (22), it is characterized in that: be provided with active chamber (23) in the described water outlet valve body (10), active chamber (23) communicates with the pilot line (20) that is positioned between first control ring (21) and second control ring (22), can be inserted into slidably about the right-hand member of described valve shaft (2) on the right side wall in the active chamber (23), the middle part of valve shaft (2) is equipped with piston (6), be positioned on the valve shaft (2) between the right side wall of piston (6) and active chamber (23) and be set with spring (9), the cylindrical of piston (6) can match with the interior circle of cylinder sleeve (7) slidably, be provided with Sealing (12) between its fitting surface, described cylinder sleeve (7) is installed in the left end in the active chamber (23), the left side of described piston (6) is provided with seal ring (4), and seal ring (4) matches with the drain opening of described water inlet valve body (1).

2. according to the described hydraulic control valve of claim 1, it is characterized in that described seal ring (4) adopts pressing plate (3) fixing, the drain opening place of described water inlet valve body (1) is set with valve seat (5), and described seal ring (4) matches with the right side of valve seat (5).

3. according to the described hydraulic control valve of claim 2, it is characterized in that the left end of described piston (6) withstands on the right-hand member of described pressing plate (3), the left end of pressing plate (3) withstands on the shaft shoulder of described valve shaft (2), the right-hand member of described piston (6) adopts nut (11) location of two spinnings on described valve shaft (2), and described water inlet valve body (1) adopts a plurality of bolts (13) to link to each other with described water outlet valve body (10).

4. according to claim 1 or 2 or 3 described hydraulic control valves, it is characterized in that the middle part of the drain opening of described water inlet valve body (1) is provided with supporting frame (14), can be inserted into slidably on the supporting frame (14) about the left end of described valve shaft (2).