CN216554681U

CN216554681U - Check valve with control oil circuit pressure

Info

Publication number: CN216554681U
Application number: CN202122482614.6U
Authority: CN
Inventors: 朱英路; 黄建东; 曹飞
Original assignee: Zaozhuang Jingxin Coal Mine Machinery Manufacturing Co ltd
Current assignee: Zaozhuang Jingxin Coal Mine Machinery Manufacturing Co ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-05-17
Anticipated expiration: 2031-10-15

Abstract

The utility model discloses a check valve with function of controlling pressure of an oil circuit, which comprises a pipe body, a pressing sleeve, a limiting sleeve, an adjusting sleeve, an external connecting pipe and a spring, wherein an internal groove is formed in the middle of the inside of the pipe body, a sealing ring is fixed at one end of the inside of the internal groove, the pressing sleeve is slidably installed in the internal groove, oil inlets are formed in one end of the pressing sleeve in an annular array mode, the limiting sleeve is fixed at one end, deviating from the sealing ring, of the inside of the internal groove, one end of the limiting sleeve is fixed on a side block of the inside of the internal groove, a movable groove is formed in one end of the pipe body, the adjusting sleeve is inserted into the movable groove, the inner end of the adjusting sleeve is connected with the bottom end of the inside of the pressing sleeve through the spring, frame plates are distributed in an annular array mode at an opening in the inside of the adjusting sleeve, the external connecting pipe is installed at one end of the movable groove of the pipe body in a threaded mode, and a pressing pipe is slidably installed in the external connecting pipe. The utility model has the advantages of adjustable oil pressure coefficient, improved practicability and internal limit, prevention of deviation and ensured use quality.

Description

Check valve with control oil circuit pressure

Technical Field

The utility model relates to the technical field of check valve equipment, in particular to a check valve capable of controlling oil way pressure.

Background

The check valve is commonly called as a check valve, fluid can only flow along the water inlet, and the medium at the water outlet cannot flow back. Check valves are also known as check valves or check valves. For preventing reverse flow of oil in hydraulic systems or for preventing reverse flow of compressed air in pneumatic systems. The one-way valve has a straight-through type and a right-angle type. The straight-through one-way valve is installed on the pipeline by threaded connection. The right-angle check valve has three forms of threaded connection, plate connection and flange connection. The one-way valve has a straight-through type and a right-angle type. The straight-through one-way valve is installed on the pipeline by threaded connection. The right-angle check valve has three forms of threaded connection, plate connection and flange connection. A pilot operated check valve, also called a holding valve or a pressure retaining valve, is the same as the check valve and prevents the reverse flow of oil. However, when reverse flow of oil flow is required in the hydraulic circuit, the control oil pressure can be used to open the check valve to allow flow in both directions. The hydraulic control one-way valve adopts a conical valve core, so that the sealing performance is good. When the oil circuit is required to be sealed, the valve can be used as one-way locking of the oil circuit to play a pressure maintaining role.

The existing check valve cannot effectively adjust oil pressure in the process of controlling an oil way, controls the stability of the oil pressure through a preset spring elastic coefficient, cannot perform later-stage regulation and teaching and has poor practicability; and the inside of the existing check valve does not have a limiting and fixing structure, and the position of the valve core is easy to deviate after long-term use, so that the sealing performance is influenced, and the use quality is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a check valve with control oil circuit pressure, which has the advantages of adjustable oil pressure coefficient, improved practicability and internal limit, prevention of deviation and guarantee of use quality, and solves the problems that the prior equipment cannot carry out later-stage adjustment, is poor in practicability and easy to deviate internally and affects the use quality.

In order to achieve the purpose, the utility model provides the following technical scheme: a one-way valve with function of controlling pressure of oil circuit comprises a pipe body, a pressing sleeve, a limiting sleeve, an adjusting sleeve, an external connecting pipe and a spring, wherein a built-in groove is arranged in the middle of the inside of the pipe body, and one end of the inner part of the built-in groove is fixed with a sealing ring, the pressing sleeve is slidably arranged in the built-in groove, and one end of the pressing sleeve is provided with oil inlets in an annular array, the limiting sleeve is fixed at one end of the inner part of the built-in groove, which is far away from the sealing ring, one end of the limiting sleeve is fixed on the edge block of the inner part of the built-in groove, one end of the pipe body is provided with a movable groove, the adjusting sleeve is inserted in the movable groove, the inner end of the adjusting sleeve is connected with the inner bottom end of the pressing sleeve through a spring, frame plates are distributed at the inner opening of the adjusting sleeve in an annular array mode, the outer connecting pipe is installed at one end of the movable groove of the pipe body in a threaded mode, the inner portion of the outer connecting pipe is slidably installed with a pressing pipe, and the outer end of the pressing pipe is attached to the frame plates.

Preferably, one end of the oil inlet of the pressing sleeve is attached to the sealing ring, one end of the opening of the pressing sleeve is inserted into the limiting sleeve, and the limiting sleeve is matched with the pressing sleeve.

Preferably, the spring passes the inside of stop collar, and spring and stop collar looks adaptation, the circulation mouth has been seted up to the inner of adjusting collar, and the spring is located the circulation mouth outside.

Preferably, the inner wall of the external connecting pipe is provided with a sliding groove, the outer side of the pressing pipe is fixed with a sliding block, the sliding block is slidably mounted in the corresponding sliding groove, and the pressing pipe is matched with the opening of the adjusting sleeve in size.

Preferably, the movable groove is matched with the adjusting sleeve, and the built-in groove is matched with the pressing sleeve and the limiting sleeve.

Compared with the prior art, the utility model has the following beneficial effects: the two ends of the tube body of the device are respectively connected with an oil tube and an external tube, the external end of the external tube connected with the external tube by screw thread is pressed after the external tube thread enters the external tube, the top end pressing frame plate of the pressing tube drives the adjusting sleeve to displace in the movable groove, the adjusting sleeve presses the pressing sleeve to be attached to the sealing ring by the extrusion of the inner side spring to realize oil circuit sealing, the length of the spring is changed when the adjusting sleeve displaces, the elastic coefficient of the spring is changed, oil enters through one end of the sealing ring of the tube body during the use process, the port of the pressing sleeve is extruded by the oil pressure, the pressing sleeve slides in the internal groove after the pressure reaches the elastic coefficient value of the spring, the limiting is carried out by the limiting sleeve during the displacement of the pressing sleeve, the derailment of the connecting part caused by overlarge pressure is avoided, the oil enters the inner side of the pressing sleeve through the oil inlet, enters the adjusting sleeve from the circulation port after passing through the limiting sleeve, and then the oil enters the external tube after passing through the interior of the external tube, when the oil pressure is less than the elasticity coefficient value of spring, then press the cover to seal sealing washer department, prevent the oil feed, this device simple structure, easy and simple to handle, through the design of adjustable oil pressure, reinforcing device practicality, built-in limit structure avoids the inner structure skew that long-term use caused simultaneously, ensures the use quality.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of the structure of the adjusting sleeve of the present invention;

fig. 3 is a schematic view of the pressing sleeve structure of the present invention.

In the figure: 1. a pipe body; 2. a seal ring; 3. pressing the sleeve; 4. a built-in groove; 5. a limiting sleeve; 6. an adjusting sleeve; 7. a movable groove; 8. an external connection pipe; 9. a frame plate; 10. a flow port; 11. an edge block; 12. a spring; 13. an oil inlet; 14. and (6) pressing the pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides an embodiment: a check valve with function of controlling pressure of an oil way comprises a pipe body 1, a pressing sleeve 3, a limiting sleeve 5, an adjusting sleeve 6, an external connecting pipe 8 and a spring 12, wherein an internal groove 4 is arranged in the middle of the inside of the pipe body 1, and one end of the inner part of the built-in groove 4 is fixed with a sealing ring 2, a pressing sleeve 3 is arranged in the built-in groove 4 in a sliding way, and one end of the pressing sleeve 3 is provided with oil inlets 13 in an annular array, the stop collar 5 is fixed at one end deviating from the sealing ring 2 in the built-in groove 4, one end of the oil inlet 13 of the pressing sleeve 3 is attached to the sealing ring 2, one end of the opening of the pressing sleeve 3 is inserted on the stop collar 5, the limiting sleeve 5 is matched with the pressing sleeve 3, the spring 12 penetrates through the limiting sleeve 5, the spring 12 is matched with the limiting sleeve 5, the inner end of the adjusting sleeve 6 is provided with a circulation port 10, and the spring 12 is positioned outside the circulation port 10, and one end of the position-limiting sleeve 5 is fixed on the edge block 11 inside the built-in groove 4.

Activity groove 7 has been seted up to the one end of

body

1, 6 pegs graft at activity inslot 7 insidely of adjusting collar, the inner of adjusting collar 6 is connected with the inside bottom of pressing cover 3 through spring 12, the inside opening part annular array distribution of adjusting collar 6 has frame plate 9, the 7 one end of activity groove at body 1 are installed to external 8 screw threads of taking over, the inside slidable mounting of external 8 has presses pipe 14, and press the outer end of pipe 14 and laminate mutually with frame plate 9, the spout has been seted up to the inner wall of external 8 of taking over, the outside of pressing pipe 14 is fixed with the slider, and slider slidable mounting is in the spout that corresponds,

press pipe

14 and 6 opening part size looks adaptations of adjusting collar.

The movable groove 7 is matched with the adjusting sleeve 6, the built-in groove 4 is matched with the pressing sleeve 3 and the limiting sleeve 5, two ends of a pipe body 1 of the device are respectively connected with an oil pipe and an external pipe 8, the external pipe 8 is connected with the external pipe in a threaded manner, the external pipe threads enter the external pipe 8 and then extrude the pressing pipe 14, the top end of the pressing pipe 14 extrudes a frame plate 9 to drive the adjusting sleeve 6 to move in the movable groove 7, the adjusting sleeve 6 extrudes through an inner side spring 12 to enable the pressing sleeve 3 to be attached to a sealing ring 2 to realize oil circuit sealing, when the adjusting sleeve 6 displaces, the length of the spring 12 changes, the elastic coefficient of the spring 12 changes, oil enters through one end of the sealing ring 2 of the pipe body 1 in the using process, the port of the pressing sleeve 3 is extruded through oil pressure, after the pressure reaches the elastic coefficient value of the spring 12, the pressing sleeve 3 slides in the built-in groove 4, and the pressing sleeve 3 is limited by the limiting sleeve 5 in the displacement process, avoid the derailment of the connection position because of the too big pressure that causes, it is inboard that oil gets into pressure sleeve 3 through oil inlet 13, get into adjusting collar 6 from circulation opening 10 after through stop collar 5, rethread pressing pipe 14 makes oil go into external pipeline through 8 inside postings of external takeovers, be less than the elasticity coefficient value of spring 12 when the oil pressure, then press sleeve 3 to seal 2 departments of sealing washer, prevent the oil feed, this device simple structure, and is easy and simple to handle, design through adjustable oil pressure, strengthen the device practicality, built-in limit structure simultaneously, avoid the inner structure skew that long-term use caused, ensure the use quality.

The working principle is as follows: in the working process of the utility model, two ends of a pipe body 1 of the device are respectively connected with an oil pipe and an external connecting pipe 8, the external connecting pipe 8 is connected with the external pipe by screw threads, the external pipe threads enter the external connecting pipe 8 and then extrude a pressing pipe 14, the top end of the pressing pipe 14 extrudes a frame plate 9 to drive an adjusting sleeve 6 to displace in a movable groove 7, the adjusting sleeve 6 extrudes through an inner side spring 12 to enable a pressing sleeve 3 to be attached to a sealing ring 2 to realize oil circuit sealing, when the adjusting sleeve 6 displaces, the length of the spring 12 changes, the elastic coefficient of the spring 12 changes, oil enters through one end of the sealing ring 2 of the pipe body 1 in the using process and extrudes a port of the pressing sleeve 3 through oil pressure, when the pressure reaches the elastic coefficient of the spring 12, the pressing sleeve 3 slides in an internal groove 4, the pressing sleeve 3 is limited through a limiting sleeve 5 in the displacement process, the derailment of a connecting part caused by overlarge pressure is avoided, and the oil enters the inner side of the pressing sleeve 3 through an oil inlet 13, get into adjusting collar 6 from circulation port 10 behind 5 through stop collar, rethread pressure pipe 14 makes oil pass through and goes into external pipeline after 8 are inside, is less than the elasticity coefficient value of spring 12 when the oil pressure, then presses cover 3 to seal 2 departments of sealing washer, prevents the oil feed. The above is the working principle of the present invention.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a check valve with control oil circuit pressure, includes body (1), pressure cover (3), stop collar (5), adjusting collar (6), external pipe (8) and spring (12), its characterized in that: the pipe body is characterized in that a built-in groove (4) is formed in the middle of the inside of the pipe body (1), a sealing ring (2) is fixed at one end of the inside of the built-in groove (4), a pressing sleeve (3) is slidably mounted in the built-in groove (4), oil inlets (13) are formed in an annular array at one end of the pressing sleeve (3), a limiting sleeve (5) is fixed at one end of the inside of the built-in groove (4) and away from the sealing ring (2), one end of the limiting sleeve (5) is fixed on a side block (11) inside the built-in groove (4), a movable groove (7) is formed in one end of the pipe body (1), an adjusting sleeve (6) is inserted into the movable groove (7), the inner end of the adjusting sleeve (6) is connected with the bottom end of the inside of the pressing sleeve (3) through a spring (12), an annular array frame plate (9) is distributed at an inner opening of the adjusting sleeve (6), and an external connecting pipe (8) is mounted at one end of the movable groove (7) of the pipe body (1) in a threaded manner, the inside slidable mounting of external pipe (8) has and presses pipe (14), and presses the outer end of pipe (14) and laminate mutually with frame plate (9).

2. The check valve with control oil line pressure of claim 1, characterized in that: one end of an oil inlet (13) of the pressing sleeve (3) is attached to the sealing ring (2), one end of an opening of the pressing sleeve (3) is inserted into the limiting sleeve (5), and the limiting sleeve (5) is matched with the pressing sleeve (3).

3. The check valve with control oil line pressure of claim 1, characterized in that: spring (12) pass the inside of stop collar (5), and spring (12) and stop collar (5) looks adaptation, circulation mouth (10) have been seted up to the inner of adjusting collar (6), and spring (12) are located circulation mouth (10) outside.

4. The check valve with control oil line pressure of claim 1, characterized in that: the inner wall of the external connecting pipe (8) is provided with a sliding groove, the outer side of the pressing pipe (14) is fixed with a sliding block, the sliding block is slidably mounted in the corresponding sliding groove, and the pressing pipe (14) is matched with the opening of the adjusting sleeve (6) in size.

5. The check valve with control oil line pressure of claim 1, characterized in that: the movable groove (7) is matched with the adjusting sleeve (6), and the built-in groove (4) is matched with the pressing sleeve (3) and the limiting sleeve (5).