CN2460818Y

CN2460818Y - Controllable check valve

Info

Publication number: CN2460818Y
Application number: CN 00264309
Authority: CN
Inventors: 耿利平; 程亚光
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-12-04
Filing date: 2000-12-04
Publication date: 2001-11-21
Anticipated expiration: 2010-12-04

Abstract

The utility model discloses a controllable check valve which is composed of a valve body, a flexible fulcrum, a stiff fulcrum, a valve base, a valve core, a lever, and an upper and a lower controllable workpieces. Based on the structure that the valve core is movably mounted on a pin shaft of the flexible fulcrum and the leverage theory that the lever moves up and down on the rigidity fulcrum, the purposes that a container can store and feed liquid and the controllable check valve can control the fluid level in the container to close or discharge liquid by turns are achieved. The utility model has the advantages of simple production, easy installation and operation, low cost and long service life, etc., and is an ideal bidirectional controllable check valve.

Description

Controllable check valve

The utility model relates to a kind of controllable check valve in the pipe-line for conveying liquids, is specially adapted to do automatic control of liquid level in the container.

People realize that automatic control of liquid level mostly adopts ball-cock assembly in the container at present, and this float valve can only be closed feed pathway, can not emit liquid through float valve, makes that so controlled process pipe design is complicated, and the manufacturing equipment installation cost increases.

The purpose of this utility model be to avoid the deficiency in the above-mentioned background technology and provide a kind of and can be used for liquid storage, feed flow is closed and emit the hocket controllable check valve of liquid level control in the container of liquid, and the utility model also to have a processing and fabricating simple, with low cost, characteristics such as long service life.

The purpose of this utility model is achieved in that it is by valve body 1, flexible point 2, valve seat 3, lever 4, rigidity fulcrum 5, spool 6, controlled parts 7 are formed up and down.Wherein flexible point 2, valve seat 3, rigidity fulcrum 5 are cast into an overall structure with valve body 1, flexible point 2 casts in the valve body 1 valve pipe, valve seat 3 casts in the valve body 1 valve mouth of pipe, rigidity fulcrum 5 casts in the outer downside of valve body 1 valve pipe, spool 6 upper ends with bearing pin be movably arranged on the flexible point 2, the valve plate of spool 6 is movably arranged on interior valve seat 3 valve ports of valve body 1, lever 4 usefulness bearing pins are movably arranged on the rigidity fulcrum 5, controlled parts 7 are installed down with fastening piece in lever 4 upper ends, and lever 4 lower ends are close to and are mounted on the spool 6 valve plates outsides.

The utility model is compared background technique following advantage:

1. the utility model has been made flexible point 2, rigidity fulcrum 4 and lever 4 parts, makes in the container liquid level control carry out liquid storage, feed flow and reaches and close and emit the liquid controlled purpose that hockets.

2. all parts of the utility model adopt brass material to make, and long service life reduces maintenance load and maintenance expenses.

3. the utility model processing and fabricating is simple, and is with low cost, and fitting operation is simple and easy.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is a mounting structure schematic representation of the present utility model.

With reference to Fig. 1, the utility model is by valve body 1, flexible point 2, valve seat 3, lever 4, rigidity fulcrum 5, spool 6, controlled parts 7 are formed up and down.Wherein flexible point 2, valve seat 3, rigidity fulcrum 5 are cast into an overall structure with valve body 1.Flexible point 2 casts in the valve body 1 valve pipe, and its effect is the moving fulcrum of opening or closing as spool 6.Valve seat 3 casts in the valve body 1 valve mouth of pipe, and its effect is to open or the cut-off valve doorway as spool 6.Rigidity fulcrum 5 casts in the outer downside of valve body 1 valve pipe, and its effect is to make the up and down fixed support of lever 4.Embodiment's valve body 1, flexible point 2, valve seat 3, rigidity fulcrum 5 adopt a founding of brass material casting to form.The utility model spool 6 upper ends are movably arranged on flexible point 2 with bearing pin, and the valve plate of spool 6 is movably arranged on the valve port of the valve seat 3 in the valve body 1, is processed into the drive fit enclosed construction, and embodiment adopts brass material to be machined to garden plate stick harness structure.The utility model lever 4 usefulness bearing pins are movably arranged on the rigidity fulcrum 5, controlled parts 7 are installed down with fastening piece in lever 4 upper ends, lever 4 lower ends are close on the valve plate outside that is mounted on spool 6, the active force that moves up and down owing to controlled parts 7 about lever 4 upper ends, lever 4 lower ends are also moved up and down, the effect of making controllable check valve is played in moving up and down the unlatching that drives spool 6 or closing of lever 4 lower ends.Embodiment's lever 4 adopts 3 millimeters thick copper rod materials of φ to process.Controlled up and down parts 7 embodiments adopt float to make, and lean on the buoyancy of float that lever 4 is moved up and down, and controlled up and down parts 7 also can adopt other mechanical force to realize that lever 4 moves up and down.Valve body 1 can be cast into the specification of the size that varies in size, and satisfies requirements of different users.

The utility model action principle is as follows: valve seat 3 valve ports of controllable check valve valve body 1 are installed in the controlled container, the in addition outlet end worm structure of valve body 1 with confess liquid line and link to each other.When the pressure in the valve body 1 is lower than pressure in the container, small pressure reduction gets final product, spool 6 will be opened, thereby the liquid in the controlled container can flow out smoothly, liquid in the container descends gradually, the float of controlled up and down parts 7 also drops to lower position with the liquid level face, the float of controlled up and down parts 7 descends to driving on lever 4 lower ends and moves, move on lever 4 lower ends and make the unlatching of spool 6 slits bigger, lever 4 lower ends move up and down high low degree and the interior liquid level rise and fall degree of container is proportional, then also with the unlatching of spool 6 and to close size proportional, liquid in container can flow out smoothly.When the pressure in the valve body 1 was higher than container inner pressure, because the position-limiting action of lever 4 lower ends, spool 6 can not be closed immediately.Liquid in the valve body 1 will flow in the container by spool 6, liquid level in the container will improve constantly, thereby the float of controlled up and down parts 7 come-up drives lever 4 upper ends and moves up, then lever 4 lower ends downward move, lever 4 lower ends move down and make between spool 6 and the valve seat 3 that to open the slit more and more littler, close until spool 6 and valve seat 3, blocking-up liquid enters in the container, realize the control of liquid level, so the utility model can be realized the control that liquid in container flows into, can realize the control that liquid in container flows out again.

Claims

1. controllable check valve, it comprises valve body (1), controlled up and down parts (7), it is characterized in that it also comprises flexible point (2), valve seat (3), lever (4), rigidity fulcrum (5), spool (6), flexible point (2) wherein, valve seat (3), rigidity fulcrum (5) is cast into an overall structure with valve body (1), flexible point (2) casts in valve body (1) the valve pipe, valve seat (3) casts in valve body (1) the valve mouth of pipe, rigidity fulcrum (5) casts in the outer downside of valve body (1) valve pipe, spool (6) upper end is movably arranged on the flexible point (2) with bearing pin, the valve plate of spool (6) is movably arranged on valve seat (3) valve port in the valve body (1), lever (4) is movably arranged on the rigidity fulcrum (5) with bearing pin, controlled parts (7) are installed down with fastening piece in lever (4) upper end, and lever (4) lower end is close on the valve plate outside that is mounted on spool (6).