CN212775744U

CN212775744U - Leakage-proof one-way valve

Info

Publication number: CN212775744U
Application number: CN202020950339.9U
Authority: CN
Inventors: 姚晓峰; 左超杰
Original assignee: Suzhou Yuanshang Precision Machinery Co ltd
Current assignee: Suzhou Yuanshang Precision Machinery Co ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2021-03-23
Anticipated expiration: 2030-05-29

Abstract

The utility model discloses a prevent leaking check valve, including disk seat, case, valve barrel and elastic component, the disk seat is equipped with oil inlet and oil-out, and the case is acceptd in the disk seat and is sealed with disk seat line contact, and disk seat and valve barrel fixed connection are sealed, and the elastic component both ends are contradicted with case and valve barrel respectively, forms the oil pocket between case and the valve barrel, and the case still is equipped with the side opening, and side opening and oil-out and oil pocket intercommunication when fluid is reverse when flowing in from the oil-out, oil pocket pressure increase, impels case and disk seat closer contact, prevents to leak.

Description

Leakage-proof one-way valve

Technical Field

The utility model relates to a check valve especially relates to a prevent leaking check valve.

Background

The common check valve is also called check valve, short for check valve, and is used to control the unidirectional flow of oil and stop when the direction is reversed. Common one-way valves can be divided into a cone valve type and a ball valve type according to different valve core structures. The working principle is that the hydraulic pressure acting on the valve core is used for controlling the valve core to open or close.

The one-way valve on the market at present has the loss of forward flow resistance, poor reverse sealing performance and leakage.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a leakage-proof one-way valve with small forward flowing resistance loss and good reverse sealing performance.

The purpose of the utility model is realized by adopting the following technical scheme:

the utility model provides a prevent leaking check valve, includes disk seat, case, valve barrel and elastic component, the disk seat is equipped with oil inlet and oil-out, the case accept in the disk seat and with disk seat line contact is sealed, the disk seat with valve barrel fixed connection is sealed, the elastic component both ends respectively with the case reaches the valve barrel is contradicted, the case reaches form the oil pocket between the valve barrel, the case still is equipped with the side opening, the side opening with the oil-out reaches the oil pocket intercommunication, when the reverse follow of fluid the oil-out flows in, oil pocket pressure increases, promotes the case with disk seat inseparabler contact prevents to leak.

Further, the valve seat is provided with an abutting portion, the valve core is provided with a cone, and the abutting portion is in line contact with the cone to form sealing.

Further, the interference part is located between the oil inlet and the oil outlet.

Further, the elastic member is located in the oil chamber.

Further, the elastic member is a spring.

Furthermore, the valve sleeve is provided with an internal thread, the valve seat is provided with an external thread, and the internal thread is matched with the external thread to fixedly connect the valve sleeve with the valve seat.

Further, the valve core is provided with an accommodating cavity, the valve sleeve is provided with an installation cavity, and the accommodating cavity is communicated with the installation cavity to form the oil cavity.

Further, the accommodating cavity is communicated with the side hole.

Compared with the prior art, the utility model discloses form the oil pocket between the case and the valve barrel of preventing leaking the check valve, the case still is equipped with the side opening, and side opening and oil-out and oil pocket intercommunication when fluid is reverse to flow in from the oil-out, oil pocket pressure increase, and the more in close contact with of promotion case and disk seat prevents to leak.

Drawings

FIG. 1 is a perspective view of the leakproof one-way valve of the present invention;

fig. 2 is a cross-sectional view of the leak-resistant check valve of fig. 1.

In the figure: 10. a valve seat; 11. an oil inlet; 12. an oil outlet; 13. a contact part; 20. a valve core; 21. a cone; 22. an accommodating cavity; 23. a side hole; 30. a valve housing; 31. a mounting cavity; 40. an elastic member.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when a structure is referred to as being "secured to" another structure, it can be directly on the other structure or intervening structures may also be present, secured by the intervening structures. When a structure is referred to as being "connected" to another structure, it can be directly connected to the other structure or intervening structures may also be present. When a structure is referred to as being "disposed on" another structure, it can be directly on the other structure or intervening structures may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 2, in order to illustrate an embodiment of a leak-proof check valve according to the present invention, the leak-proof check valve includes a valve seat 10, a valve core 20, a valve sleeve 30 and an elastic member 40.

The valve seat 10 is provided with an oil inlet 11, an oil outlet 12 and an abutting portion 13. An oil inlet 11 is located at the end of the valve seat 10. The oil outlet 12 is located at the side of the valve seat 10. The number of the oil inlets 11 is one, and the number of the oil outlets 12 is multiple. The plurality of oil outlets 12 are evenly distributed on the side of the valve seat 10. The cross section of the abutting part 13 is a right angle. The abutting portion 13 is located between the oil inlet 11 and the oil outlet 12. The tail of the valve seat 10 is provided with external threads.

The valve body 20 is provided with a cone 21, a housing chamber 22, and a side hole 23. The cone 21 is located at the end edge of the spool 20. The cross section of the cone 21 is a diagonal line. The extending direction of the side hole 23 is perpendicular to the extending direction of the housing chamber 22. The side hole 23 communicates with the housing chamber 22.

The valve housing 30 is provided with a mounting chamber 31. The inner wall of the end of the valve housing 30 is provided with an internal thread. The elastic member 40 is a spring.

When assembling the leak-proof check valve, the valve element 20 is mounted on the valve seat 10. The elastic member 40 has both ends received in the receiving cavity 22 of the valve core 20 and the mounting cavity 31 of the valve sleeve 30, respectively. The valve seat 10 and the valve sleeve 30 are connected in a sealing way through threads. The housing chamber 22 and the mounting chamber 31 form an oil chamber.

When the leakproof one-way valve is used, when oil enters from the oil inlet 11 and reaches the lowest opening pressure, the valve core 20 moves to the right, the collision part 13 is separated from the cone 21, the oil flows out from the oil outlet 12, and the loss of positive flowing pressure exists in the process. When oil enters from the oil outlet 12, the oil flows into the oil chamber from the side hole 23, the pressure of the oil chamber is increased, and the valve core 20 is pushed to be in closer contact with the valve seat 10, so that leakage is prevented.

By the above design, a small spring force can be set as much as possible, and the reverse sealing performance can be ensured.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, all according to the equivalent modifications and evolutions of the present invention, which are made to the above embodiments by the essential technology, and all belong to the protection scope of the present invention.

Claims

1. The utility model provides a prevent leaking check valve, includes disk seat, case, valve barrel and elastic component, the disk seat is equipped with oil inlet and oil-out, its characterized in that: the valve element is contained in the valve seat and is in line contact sealing with the valve seat, the valve seat is fixedly connected with the valve sleeve and is sealed, two ends of the elastic part are respectively abutted against the valve element and the valve sleeve, an oil cavity is formed between the valve element and the valve sleeve, the valve element is further provided with a side hole, the side hole is communicated with the oil outlet and the oil cavity, when oil flows in from the oil outlet reversely, the pressure of the oil cavity is increased, the valve element is pushed to be in closer contact with the valve seat, and leakage is prevented.

2. A leak resistant one way valve as defined in claim 1 wherein: the valve seat is provided with a collision part, the valve core is provided with a cone, and the collision part is in line contact with the cone to form sealing.

3. A leak-resistant one-way valve as defined in claim 2, wherein: the collision part is located between the oil inlet and the oil outlet.

4. A leak resistant one way valve as defined in claim 1 wherein: the elastic member is located in the oil chamber.

5. A leak resistant one way valve as defined in claim 1 wherein: the elastic piece is a spring.

6. A leak resistant one way valve as defined in claim 1 wherein: the valve sleeve is provided with an internal thread, the valve seat is provided with an external thread, and the internal thread is matched with the external thread to fixedly connect the valve sleeve with the valve seat.

7. A leak resistant one way valve as defined in claim 1 wherein: the valve core is provided with an accommodating cavity, the valve sleeve is provided with an installation cavity, and the accommodating cavity is communicated with the installation cavity to form the oil cavity.

8. A leak resistant one way valve as defined in claim 7 wherein: the accommodating cavity is communicated with the side hole.