CN2208127Y

CN2208127Y - Liquid-flow valve

Info

Publication number: CN2208127Y
Application number: CN 94203198
Authority: CN
Inventors: 刘铮
Original assignee: Individual
Current assignee: Liu Zheng
Priority date: 1994-02-04
Filing date: 1994-02-04
Publication date: 1995-09-20
Anticipated expiration: 2004-02-04

Abstract

The utility model discloses a liquid-flow valve, mainly comprising a main liquid-flow passage and a control section. The liquid-flow valve also comprises a main liquid-flow outlet pipe (1), a valve body (2), a connecting pipe (3), a valve cover (4), a connecting pipe (5), a controller (6), a connecting pipe (7), a piston upper chamber (8), a piston (9), a seal ring (10), a liquid-flow seal disc (11), a piston lower chamber (12), a main liquid-flow inlet pipe outlet (13) and a main liquid-flow inlet pipe (14). The liquid-flow valve utilizes the piston which can slide up and down in the chamber of a valve body as an executive element, liquid flow is controlled by the self liquid pressure of the pipe through the controller, and operation with labor saving is convenient, sensitive and reliable. The controller of the liquid-flow valve can adopt different forms as requirements such as manual form, electric control form, air control form, etc. Therefore, the liquid-flow valve can be manipulated in a long distance or controlled with centralization, and the liquid-flow valve can be also connected with other control equipment for controlling liquid flow automatically.

Description

Liquid-flow valve

The utility model relates to a kind of liquid flow control valve.

In present employed big liquid flow control valve door, generally the screw mandrel gate valve of Cai Yonging is to utilize the rising of flashboard or descend to open or cut out pipeline liquid stream.It has a screw mandrel that handle is housed to link to each other with flashboard.Handle by the turn screw mandrel makes screw mandrel drive flashboard rising or decline.Thereby the open and close of liquid stream in the controlling plumbing fixtures.For this valve, manual operation is not only required great effort greatly, and unlatching or closing motion are slow, when if screw mandrel is subjected to corrosion serious, operate more difficult, particularly be difficult to requirement according to production application, realize remote-controlled operation or to a plurality of valves concentrate control and be connected with other control apparatus, according to the command signal that control apparatus sends, pipeline liquid stream is controlled automatically.

The purpose of this utility model is to provide a kind of new fluid valve.Its opening and closing, not only convenient and strength-saving, and be active in one's movements.And can be according to the requirement of production application, carry out remote-controlled operation, a plurality of valve centralized control and be connected with other control apparatus, liquid stream is controlled automatically.

For achieving the above object, the utility model changes the valve body structure of traditional screw mandrel gate valve into the valve body structure of piston type valve plate.And by a controller being set, the opening and closing that the ingenious hydraulic pressure that utilizes the interior liquid of pipeline to flow self comes control valve.The operator only needs controller is operated opening and closing with regard to controllable valve, and rapid operation is convenient.Because controller has the selection of various ways such as manual, automatically controlled, gas control according to production requirement, therefore this invention just can utilize electricity or gas to realize remote-controlled operation easily, or a plurality of valves are concentrated control, and the signal of accepting other control apparatus output is controlled automatically to liquid stream.

This model utility mainly partly is made up of control part and main liquid chunnel.Flow to pipe by main liquid, main liquid outlet pipe and connect the passage that the two piston cavity constitutes is the passage that main liquid stream is flowed through.The outlet end that main liquid flows to pipe stretches in the piston cavity, and the piston that utilizes an energy to move up and down in piston cavity covers pushes down or leave this outlet end to block or to open main flow channel.Finish the task of opening and closing master liquid stream.Controlling the part that this piston moves has been exactly moving part, and it is mainly flow to pipe and be formed by connecting with piston upper chamber, main liquid outlet pipe, main liquid respectively by three tubules by the controller of a likeness in form three-way valve.This controller has " unlatching ", " closing " and " stablizing " three gears.Its major function is when opening piston upper chamber and main liquid to be flow to the pipe connection.When " closing ", piston upper chamber is communicated with main liquid outlet pipe.And when " stablizing " shelves, piston upper chamber is not communicated with any pipeline in the external world.Fluid valve is in concrete the use, and because of pipeline liquid stream has certain hydraulic coupling, and the main liquid of the fluid valve liquid pressure that flows to mouth of pipe place is greater than the liquid pressure at main liquid outflow opening place.When controller flows to pipe when communicating with main liquid outlet pipe or main liquid respectively with piston upper chamber, the liquid pressure size in the piston upper chamber also changes, the pressure values of the liquid in pipe that trend is connected with it.The variation of liquid pressure in the piston upper chamber makes piston be subjected to downward hydraulic coupling and also and then changes.When piston was subjected to downward active force greater than the active force that makes progress, piston moved down and covers main liquid and flow to the pipe outlet, and downward active force moves valve opening during less than the active force that makes progress on the piston.During throttle down controller is placed " closing " shelves, liquid pressure communicates and increases because of itself and main liquid flow to pipe in the piston upper chamber.When it increased to piston and is subjected to downward active force greater than the active force that makes progress, piston moved down and covers main liquid and flow to the pipe outlet, blocking-up liquid stream, valve closing.During Open valve, controller is placed " unlatching " shelves, the piston upper chamber liquid pressure diminishes because of it communicates with main liquid outlet pipe, and piston is subjected to downward hydraulic coupling and diminishes thereupon.The active force that makes progress that is subjected to when piston is during greater than downward active force, move away the outlet that main liquid flows to pipe on the piston, valve is opened, if also need the fluid flow size is controlled, then when valve in above-mentioned unlatching or close and proceed to when requiring flow, controller is placed " stablizing " shelves, at this moment do not communicate because of piston upper chamber with extraneous other any pipe, intracavity liquid can not flow out or flow to, it is motionless that piston will be fixed on a certain position, thereby make the flow quantity size be controlled at required value, like this, the operator only needs controller is operated, and just can open, close with stabilizing solution and flow.

The utility model has the advantages that: by changing valve body structure form and control mode, utilize the pressure of liquid self in the pipeline to come valve is operated, not only convenient and strength-saving, and it is reliable to be active in one's movements, also can be according to the production application requirement, carry out remote-controlled operation, a plurality of valve centralized control and link, liquid stream is controlled automatically with other control apparatus.

Further specify the concrete structure and the working principle of this valve below in conjunction with accompanying drawing.

(Fig. 1) be the valve body structure schematic representation of fluid valve.

(Fig. 2) be the simple structure schematic representation of the type hand controller of fluid valve.

(Fig. 3) be controller when " closing " state, the schematic representation of internal path situation.

(Fig. 4) be the schematic representation of controller internal path situation when " unlatching " state.

(Fig. 5) be controller when " stablizing " state, the schematic representation of internal path situation.

In Fig. 1, (1) is main liquid outlet pipe, and (2) are valve body, (3) be the connecting tube of controller and main liquid outlet pipe, (4) are valve gap, and (5) are the connecting tube of controller and piston upper chamber, (6) be controller, (7) are the connecting tube that controller and main liquid flow to pipe, and (8) are piston upper chamber, (9) be piston, (10) be seal ring, (11) are the current seal disc, and (12) are piston upper chamber, (13) be the outlet that main liquid flows to pipe, (14) are that main liquid flows to pipe.

Wherein, main liquid outlet pipe (1), main liquid flow to pipe (14) and piston cavity of resorption (12) constitutes main liquid chunnel.Main liquid flows to the outlet (13) of pipe (14) and stretches in the piston upper chamber (12), and port is parallel with the lower end surface of piston (9).During Open valve, main liquid stream flows to pipe (14) from main liquid and advances, and is flowed out by main liquid outlet pipe (1) through the piston cavity of resorption.During throttle down, piston moves down, and covers at main liquid to flow in the outlet (13) of pipe blocking-up liquid stream.Controller (6) flows to pipe (14) with main liquid respectively by three pipelines, main liquid outlet pipe (1), and the continuous control section that forms of piston upper chamber (8), be responsible for the hydraulic pressure in the piston upper chamber is regulated, moving up and down of control piston, stretch into respectively with the mouth of pipe that main liquid flows to connecting tube (7) that pipe (14) communicates and the connecting tube (3) that communicates with main liquid outlet pipe (1) wherein that main liquid flows to pipe and main liquid outlet pipe inside is a bit of, and pipe end has angle, it is facing to the liquid flow path direction that the angle direction flows in the pipe at main liquid, in main liquid outlet pipe, be, help the quick outflow of liquid in the piston upper chamber like this or flow to pipe flowing in the piston upper chamber from main liquid along the liquid flow path direction.Whole valve body can be cast also and can be welded.Piston cavity inwall and piston should be taked anticorrosive measure, make the opening and closing difficulty with anti-corrosion.The lower end surface of piston (9) is fixed with a seal disc (11) that plays the sealing flow action, and available rubber or other material are made, and mainly is in order to make the better effects if of piston blocking-up current.Piston can slide up and down in cavity.

Controller 6 is important component parts of fluid valve, it has manually, and is automatically controlled, various ways such as gas control, Fig. 2 is a kind of simple structure schematic representation of personal control, in Fig. 2, (21) are the interface that links to each other with main liquid outlet pipe, and (22) are body, (23) be cock, (24) be miniature lever, (25) are diaphragm seal, and (26) are the locking screw lid.(27) for flowing to the interface that pipe links to each other with main liquid, (28) are the interface that links to each other with piston upper chamber.During throttle down, miniature lever (24) to " closing " shelves in the turn cock (23), the through hole that has in the cock will connect the interface (27) of main liquid outlet pipe to be connected with the interface that is connected piston upper chamber (28), as shown in Figure 3.At this moment, the liquid that main liquid flows in the pipe (14) will flow in the piston upper chamber (8) at low pressure place by controller, make hydraulic pressure increase in the piston upper chamber, it also increases the downward hydraulic coupling of piston, when piston was subjected to downward active force greater than the active force that makes progress, piston moved down, and covers the outlet (13) that main liquid flows to pipe, blocking-up liquid stream, throttle down.When opening valve, the handle in the turn cock (23) is to " unlatching " shelves, and the outlet (21) that at this moment connects main liquid outlet pipe will be connected with the outlet that is connected piston upper chamber (28), as shown in Figure 4.Liquid in the piston upper chamber (8) will flow out to the main liquid outlet pipe (1) at low pressure place, and hydraulic pressure reduces in the piston upper chamber, and the active force downward to piston also reduces thereupon.When piston is subjected to upwards active force greater than downward active force, move on the piston, the outlet (13) that main liquid flows to pipe is opened, and valve is finished breakdown action.When needs are controlled flow quantity, at above-mentioned valve opening or when being closed to required flow quantity size, handle on the controller (24) is threaded to " stablizing " shelves, at this moment, connect main liquid outlet pipe outlet (21) on the controller, connect main liquid flow to the outlet (27) of pipe and connect the outlet (28) of piston upper chamber not connected, as shown in Figure 5.Liquid can not flow to and can not flow out in the piston upper chamber, and piston is fixed on certain position and moves also on not and do not move down.Thereby make flow quantity be controlled at certain value.

If will carry out remote-controlled operation or a plurality of valves are carried out centralized control to fluid valve, and fluid valve linked to each other with other control apparatus, realization is during to the automatic control of liquid stream, personal control can be changed to electrically-controlled controller, carry out remote-controlled operation with electrical signal, to a plurality of valve centralized control, or allow controller accept the electrical signal that other control apparatus sends, liquid stream is controlled automatically.Simple electrically-controlled controller can be made up of an automatically controlled three-way valve and an automatically controlled stop valve.Automatically controlled stop valve is connected on automatically controlled three-way valve and the pipeline that piston upper chamber is communicated with, and the connection of three outlets of automatically controlled three-way valve should make: when pressing " unlatching " button, piston upper chamber (8) communicates with main liquid outlet pipe (1); When pressing the Close button, piston upper chamber (8) flows to pipe (14) with main liquid and communicates; When pressing " stablizing " button, the stop valve action cuts off the piston intracavity liquid with extraneous.Thereby make this electrically-controlled valve normally control valve unlatching, close and the stabilizing solution flow, and can carry out remote-controlled operation, to a plurality of valve centralized control with accept the signal that other control apparatus sends, liquid stream is controlled automatically.

In the special place that can not use electrically-controlled controller.Can use the gas control controller to meet the demands, its working principle is similar to above-mentioned controller.Just using gas instead replaces electricity to carry out control operation.

Claims

1, a kind of fluid valve, mainly by main liquid outlet pipe, main liquid flows to pipe for it, and piston cavity, piston and controller are formed, and it is characterized in that:

A: whole valve is made up of main liquid chunnel and control section.

B: finish the task of closing and opening liquid stream as actuator with piston (9).

C, the opening and closing that utilize controller (6) to rely on the fluid pressure of liquid self in the pipeline to come control valve.

D: the outlet end (13) that main liquid flows to pipe stretches in the piston cavity, and port is parallel with piston lower surface.

E, controller (6) can adopt manually according to the practical application needs, the controller of forms such as automatically controlled or gas control.

2, according to claim 1 described fluid valve, it is characterized in that: controller (6) mainly is made up of body (22) and the cock (23) that has a through hole, by the turn cock to diverse location.Make the outlet (28) that is connected with piston upper chamber (8) on the controller respectively with the outlet that is connected main liquid outlet pipe (21) be connected the outlet (27) that main liquid flows to pipe and communicate, perhaps make these three outlets not connected.

3,, it is characterized in that controller (6) has " unlatching " " to close " and " stablizing " three gears, wherein " stablizes " gear and is used for flow quantity is controlled according to claim 1 described fluid valve.

4,, it is characterized in that piston (9) lower end surface as actuator is fixed with a current seal disc (11) according to claim 1 described fluid valve.

5,, it is characterized in that controller (6) and main liquid flow to connecting tube (3) that pipe (14) and main liquid outlet pipe (1) communicate and connecting tube (7) and all stretches into main liquid respectively and flow in pipe and the main liquid outlet pipe a bit of according to claim 1 described fluid valve.And have angle at pipe end, it is facing to the liquid flow path direction that the angle direction flows in the pipe at main liquid, is to carry the liquid flow path direction in main liquid outlet pipe.