CN201386837Y

CN201386837Y - One-way ball valve

Info

Publication number: CN201386837Y
Application number: CN200920041783U
Authority: CN
Inventors: 张同伟; 汪涌; 孟海萍
Original assignee: Jiangsu Sunpower Solar Technology Co Ltd
Current assignee: Jiangsu Sunpower Solar Technology Co Ltd
Priority date: 2009-04-03
Filing date: 2009-04-03
Publication date: 2010-01-20
Anticipated expiration: 2019-04-03

Abstract

The utility model provides a one-way ball valve, comprising a valve body, a valve core, a handle and a valve pole; the valve core is connected with the valve pole which is provided with the handle, the valve body is provided with an inlet hole and an outlet hole, the valve core is connected in the valve body and is provided with a through hole which has the same coaxial core with the outlet hole of the valve body, and the inlet hole and the outlet hole of the valve body are threaded holes, a valve cover is arranged at the position of the inlet hole of the valve body, the valve cover is connected with the inlet hole of the valve body by threads, the valve cover is provided with a through hole which is communicated with the outlet hole of the valve body, and the outer end of the through hole is provided with threads; the through hole of the valve core is fixedly provided with a check level at one end of the outlet hole of the valve body, a spring is sheathed on the check level, one end of the spring is leaned against at the position of the inner plane of the check level, and the other end thereof is fixedly connected with a choke plug. The structure of the one-way valve is combined to the position of the valve core of the ball valve, the structure is simple and compact, and the installation is convenient, therefore, the one-way ball valve has a switch function of a pipeline system, and has a function of the one-way valve, thereby leading parts on the assembly of the pipeline system to be reduced and saving the cost.

Description

Non-return valve

Technical field

The utility model relates to pipe-line system valve fittings, particularly non-return valve.

Background technique

Usually valve is the device that is adjusted in gas mobile in the pipeline or liquid discrepancy, various valves have been developed according to purpose and the purposes used, general ball valve is built-in with the ball member that connects to a direction, the stream of the pipeline about just switch is connected easily by handle roating sphere member,, in use in order to prevent that no fluid from flowing backwards, also one-way valve to be installed in the pipeline, just can satisfy the demand, therefore both increase cost, make troubles to operation again.

Summary of the invention

It is a kind of simple in structure, compact, easy for installation that the purpose of this utility model is to provide, and can play on-off action in pipeline, can prevent the non-return valve that fluid flows backwards again.

The utility model is that to address the above problem the technological scheme of taking be a kind of non-return valve, comprise valve body, spool, handle and valve rod, spool and the valve rod load that handle is housed, valve body has the inlet hole and the exit orifice of coaxial inner conductor, spool is installed in the valve body, and is provided with the through hole with the exit orifice coaxial inner conductor of valve body, and its innovative point is:

The inlet hole and the exit orifice of a, valve body are tapped hole;

The inlet hole place of b, valve body is provided with valve gap, and valve gap is threaded with the inlet hole of valve body, and valve gap has the through hole that communicates with the valve outlet hole, and the outer end of through hole has screw thread;

The through hole of c, spool is fixed with check lever at exit orifice one end of valve body, is set with spring on the check lever bar, and an end of spring is against the inner plane place of check lever, and the other end is fixedlyed connected with plug.

Between the valve gap at described spool and valve body inlet hole place sealing gasket is arranged.

Be provided with seal ring between described valve rod and the valve body.

After the utility model adopts said structure, the inlet hole place of valve body is provided with the valve gap of band screw, not only easy for installation, and can enlarge using scope, when pipeline is not a straight pipeline, needing under the situation of setting angle, we only need take off valve gap, change the valve gap that can adapt to setting angle band elbow, just can be convenient to use the utility model.Pass through handle with sleeve in the use, spherical valve core is rotated, play the effect of pilot line switch, and in opening state, when the export pipeline internal pressure too high and when causing that fluid flows backwards, fluid will promote plug in the valve core through hole to the importer to moving, and the through hole of the valve gap at plug and valve body inlet hole place offseted, promptly block fluid inlet, the fluid of backflow can't be passed through, after the loine pressure mitigation was stable, fluid reduced the pressure of plug, then under the effect of the spring on the check lever, plug sets back, then the pipeline inner fluid also recovers normally to enter from inlet hole, and exit orifice is discharged, and the utility model just not only plays the effect that on-off action has also played an one-way valve like this.

Description of drawings

Fig. 1 is the structural representation of a kind of non-return valve of the utility model;

Fig. 2 is the B-B sectional view of Fig. 1;

Fig. 3 is the C-C sectional view of Fig. 2;

Fig. 4 is the A-A sectional view of Fig. 1;

Fig. 5 is the structural representation of ball core among Fig. 1;

Fig. 6 is the D-D sectional view of Fig. 5;

Fig. 7 is the structural representation of plug among Fig. 1;

Fig. 8 is the structural representation of check lever among Fig. 1;

Fig. 9 is the left view of Fig. 8.

Embodiment

The embodiment who provides below in conjunction with accompanying drawing describes in further detail the utility model.

Referring to Fig. 1,2,3,4,5,6,7,8,9, a kind of non-return valve, comprise valve body 1, spool 4, handle 3 and valve rod 9, spool 4 and valve rod 9 loads that handle 3 is housed, valve body 1 has the inlet hole 1-1 and the exit orifice 1-2 of coaxial inner conductor, and spool 4 is installed in the valve body 1, and be provided with the through hole 4-1 with the exit orifice 1-2 coaxial inner conductor of valve body 1, its innovative point is: the inlet hole 1-1 and the exit orifice 1-2 of valve body 1 are tapped hole; The inlet hole 1-1 place of valve body 1 is provided with valve gap 2, and valve gap 2 is threaded with the inlet hole 1-1 of valve body 1, and valve gap 2 has the through hole 2-1 that communicates with valve body 1 exit orifice 1-2, and the outer end of through hole 2-1 has screw thread; The through hole 4-1 of spool 4 is fixed with check lever 7 at the exit orifice 1-2 of valve body 1 end, is set with spring 6 on the check lever bar 7, and an end of spring 6 is against the inner plane 7-1 place of check lever 7, and the other end is fixedlyed connected with plug 8.The valve gap 2 of the through hole 2-1 that this kind structure is provided with at the inlet hole 1-1 place of valve body 1, because it is not only easy for installation that the outer end of through hole 2-1 has screw thread, and can enlarge using scope, when pipeline is not a straight pipeline, needing under the situation of setting angle, we only need take off valve gap 2, change a valve gap 2 that can adapt to setting angle band elbow, just can use the utility model; Threaded inlet hole 1-1, exit orifice 1-2 is convenient to the installation with pipe-line system; The check lever 7 that spool 4 is provided with, spring 6 and plug 8 play the effect of one-way valve in pipe-line system, can prevent that fluid from flowing backwards; With the valve rod 9 of spool 4 loads in the rotation of handle 3, can drive spool 4 and rotate, play the effect of pipe switch.

In order further to guarantee the sealing of pipe-line system, between the valve gap 2 at the inlet hole 1-1 place of described spool 4 and valve body 1 sealing gasket 5 is arranged.

Be provided with seal ring 10 between valve rod 9 and the valve body 1.

Non-return valve of the present utility model in use, select for use suitable valve gap with appropriate being installed in the pipeline of non-return valve of the present utility model as required, rotatable handle 3 at first in the work, drive valve rod 9 makes spool 4 rotations with its load, the passage of spool 4 is communicated with the import and export of valve body 1, be that pipeline is in opening state, fluid enters through spool 4 from the inlet hole 1-1 of valve body 1 in the pipeline, exit orifice 1-2 to valve body 1 discharges, pipe-line system is unimpeded, when the outlet end hydrodynamic pressure raises the generation reflux state, fluid will promote plug 8 among the spool 4 through hole 4-1 to the importer to moving, and the entrance point endoporus of plug 8 with spool offseted, promptly block fluid inlet, the fluid of backflow can't be passed through, when system pressure recovers normal, the backpressure of plug 8 reduces, and returns to the home position under the effect of the spring 6 of suit on the check lever 7, be that pipeline inlet is unimpeded, system recovery flows to normally.The utility model is combined in the spool place of ball valve with the structure of one-way valve, and is simple in structure, compact, easy for installation, can play the on-off action of pipe-line system, can play the effect of one-way valve again, makes in the preparation of pipe-line system to have reduced parts, saved cost.

Claims

1, a kind of non-return valve, comprise valve body (1), spool (4), handle (3) and valve rod (9), spool (4) and valve rod (9) load that handle (3) are housed, valve body (1) has the inlet hole (1-1) and the exit orifice (1-2) of coaxial inner conductor, spool (4) is installed in the valve body (1), and is provided with and the through hole (4-1) of exit orifice (1-2) coaxial inner conductor of valve body (1), it is characterized in that:

The inlet hole (1-1) and the exit orifice (1-2) of a, valve body (1) are tapped hole;

The inlet hole (1-1) of b, valve body (1) locates to be provided with valve gap (2), valve gap (2) is threaded with the inlet hole (1-1) of valve body (1), valve gap (2) has the through hole (2-1) that communicates with valve body (1) exit orifice (1-2), and the outer end of through hole (2-1) has screw thread;

The through hole (4-1) of c, spool (4) is fixed with check lever (7) at exit orifice (1-2) end of valve body (1), be set with spring (6) on the check lever (7), one end of spring (6) is against the inner plane (7-1) of check lever (7) and locates, and the other end is fixedlyed connected with plug (8).

2, non-return valve according to claim 1 is characterized in that: between the valve gap (2) that described spool (4) and valve body (1) inlet hole (1-1) are located sealing gasket (5) is arranged.

3, non-return valve according to claim 1 is characterized in that: be provided with seal ring (10) between described valve rod (9) and the valve body (1).