CN219472823U - Self-adjusting stop check valve - Google Patents

Abstract

The utility model discloses a self-adjusting stop check valve, which comprises a valve body and a valve rod arranged in the valve body and in threaded connection with the valve body, wherein a liquid inlet and a liquid outlet which are mutually communicated are formed in the bottom of the valve body, a containing space is formed in the valve body, a valve core is arranged in the containing space and can only vertically slide in the containing space, when the valve core slides to the bottom of the containing space, the liquid inlet and the liquid outlet are separated, and the bottom end of the valve rod can be abutted with the valve core. The beneficial effects of the utility model are mainly as follows: the valve core has the stop function of closing the valve, the opening height of the valve core is controlled to adjust the medium flow, and the valve core also has the function of preventing medium backflow, so that the three functions of stopping, stopping and adjusting are realized on the same valve, the valve is multipurpose, the pipeline operation space is saved, and the production and manufacturing cost is reduced.

Description

Self-adjusting stop check valve

Technical Field

The utility model relates to a stop check valve, in particular to a self-adjusting stop check valve.

Background

At present, a stop regulating valve and a check valve are often used in production pipelines in the industries of petroleum, chemical industry and the like, so that the functions of stopping, regulating and checking are respectively realized. And the stop regulating valve and the check valve are adopted respectively, so that a large pipeline space is occupied, the operation is inconvenient, and the production cost is increased.

For example, CN108361423a discloses a nuclear first-class large-caliber electric bellows angle stop check valve comprising a valve body, a valve seat, a valve cover, a valve clack moving component, a valve rod, a bellows sealing component, a bracket, an electric device and a buffer mechanism; the valve clack movement assembly comprises a valve clack, a guide sleeve and an anti-rotation mechanism, and the corrugated pipe sealing assembly comprises a corrugated pipe, a graphite ring, a filler and a winding gasket; the valve seat is arranged inside the valve body, the valve cover is arranged on the valve body, the electric device is connected with the valve cover through a support, the electric device is connected with the valve rod through a buffer mechanism, the lower end of the valve rod is connected with the lower part of the corrugated pipe through welding, the anti-rotation pin sequentially penetrates through the valve clack and the guide sleeve, the top end of the guide sleeve is connected with the bottom end of the corrugated pipe support through a bolt, and the flange of the corrugated pipe support is connected with the bottom surface of the valve cover through a bolt. However, the device has a complex structure, is time-consuming and labor-consuming to assemble, is driven by an electric device, has high cost, is unfavorable for mass production, and has larger limitation.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides a self-adjusting stop check valve.

The aim of the utility model is achieved by the following technical scheme:

the utility model provides a self-interacting formula stop check valve, includes the valve body and sets up in it with its spiro union's valve rod, feed liquor mouth and the liquid outlet of intercommunication each other have been seted up to the bottom of valve body, be equipped with a accommodation space in the valve body, be equipped with a case in the accommodation space, the case only can be in vertical slip in the accommodation space, works as the case slides to the accommodation space bottom is time, will cut off between feed liquor mouth and the liquid outlet, the bottom of valve rod can with case butt.

Preferably, a piston is arranged on the valve core, the piston comprises a large-diameter end and a small-diameter end which are integrally formed, the outer diameter of the large-diameter end is equal to the diameter of the accommodating space, and the small-diameter end is in threaded connection with the valve core and is locked through a pin.

Preferably, a through groove is formed in the piston, and the valve rod can penetrate through the through groove and is abutted with the valve core.

Preferably, the bottom of the valve rod is fixedly provided with a high-hardness impact-resistant pad.

Preferably, the valve body is fixedly provided with a sealing seat, the valve rod is provided with a sealing ring integrally formed with the valve rod, and the sealing ring can be abutted with the sealing seat.

Preferably, the valve body comprises an upper valve body and a lower valve body which are arranged in a vertically separated mode, and the upper valve body is connected with the lower valve body through bolts.

The beneficial effects of the utility model are mainly as follows:

1. the valve core has the stop function of closing the valve, the opening height of the valve core can be controlled to adjust the medium flow, and the valve core also has the function of preventing medium backflow, so that the three functions of stopping, stopping and adjusting are realized on the same valve, the valve is multipurpose, the pipeline operation space is saved, and the production and manufacturing cost is reduced;

2. the valve core can only vertically slide in the accommodating space, so that the operating force of the valve during opening and closing can be reduced, the purpose of self-balancing is achieved, and the valve core is flexible to open and close, simple and convenient to operate and wide in applicability, particularly under the condition of high medium pressure;

3. compared with the existing stop check valve, the valve has the advantages of compact structure, reasonable design, low manufacturing cost and convenient installation and maintenance.

Drawings

The technical scheme of the utility model is further described below with reference to the accompanying drawings:

fig. 1: the preferred embodiment of the present utility model is a schematic structural diagram.

Detailed Description

The present utility model will be described in detail below with reference to specific embodiments shown in the drawings. The embodiments are not limited to the present utility model, and structural, methodological, or functional modifications of the utility model from those skilled in the art are included within the scope of the utility model.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

As shown in fig. 1, the utility model discloses a self-adjusting stop check valve, which comprises a valve body 1 and a valve rod 2 arranged in the valve body and in threaded connection with the valve body, wherein a liquid inlet 11 and a liquid outlet 12 which are mutually communicated are formed in the bottom of the valve body 1.

The valve body 1 is internally provided with a containing space 3, the containing space 3 is internally provided with a valve core 4, the valve core 4 can only vertically slide in the containing space 3, when the valve core 4 slides to the bottom of the containing space 3, the liquid inlet 11 and the liquid outlet 12 are separated, and the bottom end of the valve rod 2 can be abutted with the valve core 4. In the above, the valve core can only vertically slide in the accommodating space, so that the operating force of the valve during opening and closing can be reduced, the purpose of self-balancing is achieved, and the valve core is flexible to open and close, simple and convenient to operate and wide in applicability, especially under the condition of high medium pressure.

Further, the valve core 4 is provided with a piston 41, the piston 41 includes a large diameter end 411 and a small diameter end 412 which are integrally formed, the outer diameter of the large diameter end 411 is equal to the diameter of the accommodating space 3, and the small diameter end 412 is in threaded connection with the valve core 4 and is locked by a pin 42. The piston 41 is provided with a through groove 43, and the valve rod 2 can penetrate through the through groove 43 and abut against the valve core 4, so as to drive the valve core 4 to move up and down, and regulate the flow of the medium. The valve core has a cut-off function of closing the valve, the opening height of the valve core can be controlled to adjust the medium flow, and the valve core also has a function of preventing medium backflow, so that the three functions of cut-off, check and adjustment are realized on the same valve, the valve is multipurpose, the pipeline operation space is saved, and the production and manufacturing cost is reduced;

the bottom of the valve rod 2 is fixedly provided with a high-hardness impact-resistant pad 21, so that damage to the valve rod can be reduced, and the service life of the valve can be prolonged.

The valve body 1 is fixedly provided with a sealing seat 5, the valve rod 2 is provided with a sealing ring 22 integrally formed with the valve rod, and the sealing ring 22 can be abutted with the sealing seat 5, so that medium leakage is prevented.

The valve body 1 comprises an upper valve body 13 and a lower valve body 14 which are arranged in a vertically separated mode, and the upper valve body 13 and the lower valve body 14 are connected through bolts 15.

The working process of the utility model is briefly described below:

the medium flows in from the liquid inlet 11 and flows out from the liquid outlet 12. When the valve rod 2 drives the valve core 4 to move to the bottommost part, the valve is in a state. When the valve rod 2 moves upwards and is positioned above, the valve core 4 is jacked up by the acting force of the medium, and the valve is in an open state.

When the valve is in an open state, when the liquid outlet pressure is higher than the liquid inlet pressure, namely the medium is in a reflux state, the valve core automatically falls back by means of self weight and medium acting force, medium reflux is blocked, and a non-return effect is achieved. The opening height of the control valve rod 2 can adjust the medium flow, and when the valve core 4 is at the uppermost position, namely after the valve is fully opened, the medium flow is in the maximum state.

It should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined as appropriate to form other embodiments that will be understood by those skilled in the art.

The above list of detailed descriptions is only specific to practical embodiments of the present utility model, and they are not intended to limit the scope of the present utility model, and all equivalent embodiments or modifications that do not depart from the spirit of the present utility model should be included in the scope of the present utility model.

Claims (6)

1. Self-interacting formula stop check valve, including valve body (1) and set up in it with its spiro union valve rod (2), inlet (11) and liquid outlet (12) of intercommunication each other have been seted up to the bottom of valve body (1), its characterized in that: be equipped with an accommodation space (3) in valve body (1), be equipped with a case (4) in accommodation space (3), case (4) only can be in vertical slip in accommodation space (3), when case (4) slip extremely when accommodation space (3) bottom is cut off between inlet (11) and liquid outlet (12), the bottom of valve rod (2) can with case (4) butt.

2. The self-regulating, shut-off check valve of claim 1, wherein: the valve core (4) is provided with a piston (41), the piston (41) comprises a large-diameter end (411) and a small-diameter end (412) which are integrally formed, the outer diameter of the large-diameter end (411) is equal to the diameter of the accommodating space (3), and the small-diameter end (412) is in threaded connection with the valve core (4) and is locked through a pin (42).

3. The self-regulating, shut-off check valve of claim 2, wherein: the piston (41) is provided with a through groove (43), and the valve rod (2) can penetrate through the through groove (43) to be abutted with the valve core (4).

4. A self-regulating stop check valve according to claim 3, wherein: the bottom of the valve rod (2) is fixedly provided with a high-hardness impact-resistant pad (21).

5. The self-regulating, shut-off check valve of claim 1, wherein: the valve is characterized in that a sealing seat (5) is fixedly arranged on the valve body (1), a sealing ring (22) integrally formed with the valve rod (2) is arranged on the valve rod, and the sealing ring (22) can be abutted to the sealing seat (5).

6. The self-regulating, shut-off check valve of claim 1, wherein: the valve body (1) comprises an upper valve body (13) and a lower valve body (14) which are vertically arranged in a separated mode, and the upper valve body (13) and the lower valve body (14) are connected through bolts (15).