CN220910524U - Right-angle one-way valve with pressure relief function - Google Patents

Abstract

The utility model provides a right angle check valve with pressure release function, including the valve body, be equipped with the inner chamber in the valve body, and be equipped with the main valve port in the inner chamber, the inner chamber includes out the liquid chamber and goes into the liquid chamber, go out the liquid chamber and go into the liquid chamber and be equipped with liquid outlet and income liquid mouth respectively, the valve body is equipped with the valve gap, valve gap screw-thread fit has the intubate, intubate internal thread fit has the spacing pipe, be equipped with pressure release ball and pressure release spring in the intubate, the pressure release ball is leaned on the pressure release valve port that seals to be equipped with, it is equipped with roof pressure spring and slide plug to go out the liquid chamber, roof pressure spring is leaned on between slide plug and valve gap, the slide plug is equipped with the centre tank, be equipped with liquid flow hole and stand respectively at the centre tank, the stand is used for inserting intubate inner end and roof pressure release ball, have the function of unidirectional control and safe release.

Description

Right-angle one-way valve with pressure relief function

Technical Field

The utility model relates to the field of control valves, in particular to a right-angle one-way valve with a pressure relief function.

Background

The one-way valve is used for controlling one-way delivery of liquid flow in a pipeline, the existing one-way valve is single in function, one-time complex assembly only plays a role in check, and the one-way valve is automatically controlled according to internal pressure difference, and damage is easily caused when the internal pressure is overlarge, so that normal work is affected.

Disclosure of Invention

In order to solve the problems, the utility model provides a right-angle one-way valve with a pressure relief function, which comprises:

The utility model provides a right angle check valve with pressure release function, includes the valve body, be equipped with the inner chamber in the valve body, and in be equipped with the main valve port in the inner chamber, the inner chamber is including being located play liquid chamber and the income liquid chamber of main valve port both sides, go out liquid chamber with go into being equipped with respectively in liquid chamber with the liquid outlet and the income liquid mouth of one side of valve body, the valve body in the outer end of play liquid chamber is equipped with the valve gap, valve gap screw-thread fit has the intubate, intubate female screw-thread fit has the spacing pipe, be equipped with pressure release ball and relief spring in the intubate, spacing pipe, pressure release spring, pressure release ball are in proper order supported and are leaned on the cooperation, pressure release ball is supported and is sealed the relief valve port that the intubate inner end was equipped with, play liquid chamber is equipped with the roof pressure spring and is used for propped and is closed the smooth plug of valve port, roof pressure spring cover is established outside the intubate and is propped between the smooth plug with the centre tank that roof pressure spring is propped against the side of centre tank the side and tank bottom are equipped with liquid and stand respectively, the stand is used for inserting in the stand and is pressed to the intubate.

Preferably, the liquid inlet cavity is further provided with a control liquid outlet, a piston is slidably matched between the control liquid outlet and the liquid inlet, the piston is provided with a push rod for pushing the sliding plug, the piston is controlled to move through transfusion and liquid discharging operation of the control liquid outlet, so that the top cover is pushed against or separated from the sliding plug, after the sliding plug is pushed down, the main valve opening is in a normally open state for liquid flow, liquid can be fed from the original liquid outlet and discharged from the liquid inlet, backflow is realized, and the liquid can be used for reversely cleaning foreign matters sealed inside.

Preferably, a limiting shoulder is arranged between the piston and the liquid inlet in the liquid inlet cavity, and the limiting shoulder is used for forming the propping limiting of the piston, so that the sliding plug is prevented from being directly propped up or the pressure release structure is indirectly damaged due to excessive movement of the ejector rod.

Preferably, the valve body is provided with an end cover in the liquid inlet cavity, so that the piston is convenient to install.

Preferably, the inner end of the end cover is provided with a truncated cone-shaped limiting end, the limiting end forms a propping limit of the piston, and the control liquid port is positioned at the side of the limiting end, so that the control liquid port cannot be blocked by the piston.

The utility model has the following beneficial effects: when the liquid inlet continuously feeds liquid, the liquid flow pushes up the sliding plug to open the main valve port, the top pressure spring is compressed, the liquid flow is discharged to the liquid outlet, when the pressure in the inner cavity is overlarge due to continuous liquid feeding, the pressure relief ball is pushed up by the liquid flow to open the pressure relief valve port, or the sliding plug moves to further compress the top pressure spring to push up the pressure relief ball, so that the inner liquid is sequentially discharged to the cannula and the limiting pipe to realize pressure relief, and when the inner pressure of the liquid inlet cavity is insufficient, the sliding plug seals the main valve port under the action of the top pressure spring to prevent backflow and realize the unidirectional control effect.

Drawings

Fig. 1 is a schematic view of the internal structure of a valve body according to an embodiment.

Fig. 2 is a schematic diagram of the internal structure principle of the embodiment.

Fig. 3 is a schematic diagram illustrating a pressure release state according to an embodiment.

1. A valve body; 2. a main valve port; 3. a liquid outlet cavity; 4. a liquid inlet cavity; 5. a liquid outlet; 6. a liquid inlet; 7. a valve cover; 8. a cannula; 9. a limiting tube; 10. a pressure relief ball; 11. a pressure relief spring; 12. a pressure relief valve port; 13. a pressing spring; 14. a sliding plug; 15. a central slot; 16. a liquid flow hole; 17. a column; 18. a control liquid port; 19. a piston; 20. a push rod; 21. a limit shoulder; 22. an end cap; 23. and a limiting end.

Description of the embodiments

The utility model will be further described with reference to figures 1 to 3 and examples.

The utility model provides a right angle check valve with pressure release function, including the valve body, be equipped with the inner chamber in the valve body, and be equipped with the main valve port in the inner chamber, the inner chamber is including the play liquid chamber and the income liquid chamber that are located main valve mouth both sides, go out liquid chamber and go into liquid chamber be equipped with respectively and be located the liquid outlet and the income liquid mouth of valve body with one side, the valve body is equipped with the valve gap in the outer end of play liquid chamber, valve gap screw-thread fit has the intubate, intubate female screw-thread fit has the spacing pipe, be equipped with pressure release ball and pressure release spring in the intubate, spacing pipe, pressure release spring, pressure release ball is propped in proper order and is leaned against the cooperation, pressure release ball is propped against the pressure release valve port that seals the intubate inner end and is equipped with, the liquid chamber is equipped with the roof pressure spring and is used for propping against the sliding plug that seals the valve port, the sliding plug is equipped with the centre tank that is used for roof pressure spring to prop against outside the intubate, be equipped with hydraulic hole and stand respectively in the side and tank bottom of centre tank.

The liquid inlet cavity is also provided with a control liquid outlet, a piston is slidably matched between the control liquid outlet and the liquid inlet, the piston is provided with a push rod for pushing the sliding plug, the piston is controlled to move through the transfusion of the control liquid outlet and the liquid discharge, so that the top cover is pushed or separated from the sliding plug, after the sliding plug is pushed down, the main valve opening is used for supplying liquid flow in a normally open state, liquid can be discharged from the original liquid outlet and the liquid inlet, backflow is realized, and the liquid can be used for reversely cleaning foreign matters plugged inside; a limiting shoulder is arranged between the piston and the liquid inlet in the liquid inlet cavity and is used for forming the propping limit of the piston, so that the sliding plug is prevented from being directly propped against or the pressure release structure behind the sliding plug is prevented from being indirectly damaged due to excessive movement of the ejector rod; the valve body is provided with an end cover in the liquid inlet cavity, so that the piston is convenient to install, the inner end part of the end cover is provided with a truncated cone-shaped limiting end, the limiting end forms the propping limit of the piston, and the control liquid port is positioned at the side of the limiting end, so that the control liquid port cannot be blocked by the piston.

Working principle: when the liquid inlet continuously feeds liquid, the liquid flow pushes up the sliding plug to open the main valve port, the jacking spring is compressed, the liquid flow is discharged to the liquid outlet, when the pressure in the inner cavity is overlarge due to continuous liquid feeding, the pressure relief ball is pushed up by the liquid flow to open the pressure relief valve port, or the sliding plug moves to further compress the jacking spring to push up the pressure relief ball, so that the inner liquid is sequentially discharged to the cannula and the limiting pipe to realize pressure relief, when the inner pressure in the liquid inlet cavity is insufficient, the sliding plug seals the main valve port under the action of the jacking spring, the effect of unidirectional control is realized by preventing backflow, in addition, the piston moves to enable the top cover to push up or separate from the sliding plug through controlling the liquid inlet transfusion and the liquid discharging operation, after pushing down the sliding plug, the liquid can be fed from the original liquid outlet and discharged from the liquid inlet to realize backflow, and the effect of cleaning foreign matters plugged inside can be used for cleaning.

It is apparent that the above examples of the present utility model are merely illustrative of the present utility model and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary or impossible to exemplify all embodiments herein. And obvious changes and modifications which come within the spirit of the utility model are desired to be protected.

Claims (5)

1. Right-angle check valve with pressure release function, its characterized in that: comprises a valve body (1), an inner cavity is arranged in the valve body (1), a main valve port (2) is arranged in the inner cavity, the inner cavity comprises a liquid outlet cavity (3) and a liquid inlet cavity (4) which are arranged at two sides of the main valve port (2), the liquid outlet cavity (3) and the liquid inlet cavity (4) are respectively provided with a liquid outlet (5) and a liquid inlet (6) which are arranged at the same side of the valve body (1), the valve body (1) is provided with a valve cover (7) at the outer end of the liquid outlet cavity (3), a cannula (8) is in threaded fit with the valve cover (7), a limiting pipe (9) is in threaded fit with the cannula (8), the pressure release ball (10) and the pressure release spring (11) are arranged in the insertion tube (8), the limiting tube (9), the pressure release spring (11) and the pressure release ball (10) are sequentially in propping fit, the pressure release ball (10) is propped against and seals a pressure release valve port (12) arranged at the inner end part of the insertion tube (8), the liquid outlet cavity (3) is provided with a propping spring (13) and a sliding plug (14) for propping and sealing the valve port, the propping spring (13) is sleeved outside the insertion tube (8) and propped against between the sliding plug (14) and the valve cover (7), the sliding plug (14) is provided with a central groove (15) for propping against by the propping spring (13), the side face and the bottom of the central groove (15) are respectively provided with a liquid flow hole (16) and a stand column (17), and the stand column (17) is used for being inserted into the inner end part of the insertion pipe (8) and propping up the pressure relief ball (10).

2. The right angle check valve with pressure relief function according to claim 1, wherein: the liquid inlet cavity (4) is further provided with a control liquid port (18), a piston (19) is slidably matched between the control liquid port (18) and the liquid inlet port (6), and the piston (19) is provided with a push rod (20) for pushing the sliding plug (14).

3. A right angle check valve with pressure relief function according to claim 2, wherein: a limiting shoulder (21) is arranged between the piston (19) and the liquid inlet (6) in the liquid inlet cavity (4), and the limiting shoulder (21) is used for forming propping limiting of the piston (19).

4. A right angle check valve with pressure relief function according to claim 2, wherein: the valve body (1) is provided with an end cover (22) in the liquid inlet cavity (4).

5. The right angle check valve with pressure relief function according to claim 4, wherein: the inner end part of the end cover (22) is provided with a truncated cone-shaped limiting end (23), the limiting end (23) forms the propping limit of the piston (19), and the control liquid port (18) is positioned at the side of the limiting end (23).