CN210790788U

CN210790788U - Check valve, clutch and dismouting frock

Info

Publication number: CN210790788U
Application number: CN201921787111.6U
Authority: CN
Inventors: 黄晓艳; 孔振东; 鲁成瑞; 郑慧慧
Original assignee: Shandong Lingong Construction Machinery Co Ltd
Current assignee: Shandong Lingong Construction Machinery Co Ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-06-19
Anticipated expiration: 2029-10-23

Abstract

The utility model discloses a check valve, clutch and dismouting frock relates to valve technical field. The check valve comprises a valve seat and a separation piece, wherein the valve cavity is formed in the valve seat, the periphery of the separation piece is in threaded connection with the inner wall of the valve cavity, the valve seat can be stably connected with the separation piece, and the separation piece can be prevented from falling off from the valve seat. In addition, an operator can utilize the dismounting tool to realize the dismounting of the separation piece and the valve seat, the outer side surface of the separation piece is provided with a groove, the cross section of the groove is polygonal, the shape and the size of the cross section of the dismounting head of the dismounting tool are the same as those of the cross section of the groove, when the separation piece and the valve seat are required to be dismounted, the operator only needs to mount the dismounting head into the groove, and then the dismounting tool is rotated, so that the quick dismounting of the separation piece and the valve seat can be realized. The service life of the clutch can be effectively prolonged. The disassembly and assembly tool is used for realizing quick and convenient disassembly and assembly of the blocking piece and the valve seat.

Description

Check valve, clutch and dismouting frock

Technical Field

The utility model relates to the technical field of valves, especially, relate to a check valve, clutch and dismouting frock.

Background

The double-cavity piston type clutch can effectively solve the problem of large impact when the clutch is jointed, and the one-way valve is an important structure on the double-cavity piston and can ensure that oil in the inner cavity of the piston is quickly discharged when the piston returns. Fig. 1 is a schematic structural diagram of a check valve 100 'provided in the prior art, the check valve 100' of the prior dual-cavity piston includes a valve seat 1 ', a linear baffle 2', and a ball 3 ', wherein the valve seat 1' is provided with a valve cavity 11 ', the valve cavity 11' is of a stepped hole structure, one end of the valve cavity 11 'is communicated with a piston inner ring cavity 200', and the other end of the valve cavity 11 'is communicated with a piston outer ring cavity 300'. The ball 3 ' is arranged in the through hole with larger size of the valve cavity 11 ', the diameter of the through hole with smaller size of the valve cavity 11 ' is smaller than that of the ball 3 ', the linear baffle 2 ' is clamped in the through hole with larger size of the valve cavity 11 ', and the linear baffle 2 ' can prevent the ball 3 ' from falling out of the valve cavity 11 '.

In order to ensure the tight connection between the linear baffle 2 'and the valve cavity 11', the linear baffle 2 'is clamped with the valve cavity 11' through friction force, but due to processing errors and long-term oil impact, the linear baffle 2 'often breaks away from the valve seat 1', and the double-cavity piston type clutch is damaged.

In order to solve the problems, in the conventional check valve, the outer periphery of the linear baffle 2 'is provided with an external thread, the inner wall of the valve cavity 11' is provided with an internal thread, and the linear baffle 2 'is connected with the valve cavity 11' through the threads, but the linear baffle 2 'and the valve cavity 11' are inconvenient to assemble and disassemble and are inconvenient for operators to operate.

Therefore, it is highly desirable to provide a check valve that can achieve quick assembly and disassembly of the baffle plate and the valve seat and can prevent the baffle plate from falling off the valve seat.

SUMMERY OF THE UTILITY MODEL

A first object of the utility model is to provide a check valve, can realize blocking the quick assembly disassembly who keeps off piece and disk seat and can avoid blocking the piece and drop from the disk seat.

A second object of the present invention is to provide a clutch, which can be used as a check valve to prolong the service life of the clutch.

A third object of the utility model is to provide a dismouting frock for carrying out the dismouting to the check valve, can realize blocking piece and the quick convenient dismouting of disk seat.

To achieve the purpose, the utility model adopts the following technical proposal:

a check valve comprises a valve seat and a blocking piece, wherein a valve cavity is formed in the valve seat, the periphery of the blocking piece is connected with the inner wall of the valve cavity through threads, a groove is formed in the outer side face of the blocking piece, and the cross section of the groove is polygonal.

Preferably, the cross section of the groove is a regular polygon.

Preferably, the cross section of the groove is in a regular hexagon shape.

Preferably, the inner wall of the valve seat is provided with a limiting part in an inward protruding manner, and the limiting part can limit the blocking piece to be separated from the valve cavity.

Preferably, the stopper portion is integrally formed with the valve seat.

Preferably, the periphery of the blocking piece is provided with an external thread, the inner wall of the valve cavity is provided with an internal thread matched with the external thread, and the connection length of the external thread and the internal thread is 5-7 mm.

Preferably, the check valve further comprises a round ball, a through hole is formed in the bottom wall of the groove, and the diameter of the round ball is larger than that of the through hole.

A clutch comprising a one-way valve as described above.

The disassembly and assembly tool is used for disassembling and assembling the one-way valve and comprises a handle and a disassembly head which are connected, and the shape and the size of the cross section of the disassembly head are the same as those of the cross section of the groove.

Preferably, the disassembly and assembly tool further comprises a pressing piece, the handle, the pressing piece and the disassembly and assembly head are sequentially connected, and the size of the cross section of the pressing piece is larger than that of the cross section of the groove.

The utility model has the advantages that:

the utility model provides a check valve includes the disk seat and separates to keep off the piece, has seted up the valve pocket on the disk seat, separates the periphery that keeps off the piece and passes through threaded connection with the inner wall of valve pocket, can realize the disk seat and separate the connection that keeps off the piece more firm, can avoid separating to keep off the piece and drop from the disk seat. In addition, an operator can utilize the dismounting tool to realize the dismounting of the separation piece and the valve seat, the outer side surface of the separation piece is provided with a groove, the cross section of the groove is polygonal, the shape and the size of the cross section of the dismounting head of the dismounting tool are the same as those of the cross section of the groove, when the separation piece and the valve seat are required to be dismounted, the operator only needs to mount the dismounting head into the groove, and then the dismounting tool is rotated, so that the quick dismounting of the separation piece and the valve seat can be realized.

The utility model provides a clutch includes above check valve, can effectively improve clutch's life.

The utility model provides a dismouting frock for to the check valve dismouting as mentioned above, be used for realizing blocking piece and the quick convenient dismouting of disk seat.

Drawings

FIG. 1 is a cross-sectional view of a prior art check valve;

fig. 2 is a cross-sectional view of the check valve provided by the present invention;

FIG. 3 is a functional schematic diagram of the installation of the diaphragm on the valve seat using an installation tool;

FIG. 4 is an enlarged view of a portion of FIG. 2 at A;

fig. 5 is a schematic structural view of the barrier member provided by the present invention;

fig. 6 is a cross-sectional view at B-B in fig. 5.

Wherein:

100' -a one-way valve; 200' -a piston inner ring cavity; 300' -a piston outer ring cavity;

1' -a valve seat; 11' -a valve cavity; 2' -a baffle plate; 3' -spheres;

100-a one-way valve; 200-piston inner ring cavity; 300-piston outer ring cavity; 400, disassembling and assembling the tool;

1-a valve seat; 11-a valve cavity; 111-internal screw thread; 2-a barrier; 21-a groove; 211-a bottom wall; 2111-a through hole; 22-external thread; 3-a limiting part; 4-round balls;

401-a handle; 402-a disassembly head; 403-pressing element.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To one of ordinary skill in the art.

The present embodiment provides a clutch, which is a dual chamber piston type clutch, and the clutch includes a check valve 100 as shown in fig. 2, and the check valve 100 can ensure the effect that oil in a piston inner ring cavity 200 is rapidly discharged to a piston outer ring cavity 300 when a piston of the dual chamber piston type clutch is returned. As shown in fig. 2, the check valve 100 includes a valve seat 1, a blocking member 2 and a ball 4, a valve cavity 11 is formed in the valve seat 1, the valve cavity 11 is of a stepped hole structure and includes a through hole with a smaller diameter and a through hole with a larger diameter which are communicated with each other, an end of the through hole with the smaller diameter is communicated with a piston inner ring cavity 200, an end of the through hole with the larger diameter is communicated with a piston outer ring cavity 300, and a conical surface is arranged at a connecting position of the through hole with the larger diameter and the through hole with the smaller diameter. The round ball 4 is arranged in a through hole with a larger size of the valve cavity 11, the diameter of a through hole with a smaller diameter is smaller than that of the round ball 4, the baffle piece 2 is arranged in the through hole with a larger size of the valve cavity 11, and the baffle piece 2 can prevent the round ball 4 from being separated from the through hole with a larger diameter. When the double-cavity piston type clutch is engaged, the ball 4 is tightly pressed on the conical surface of the straight through hole with larger diameter, and oil in the outer ring cavity 300 of the piston cannot enter the inner ring cavity 200 of the piston through the one-way valve 100. When the double-cavity piston type clutch is separated, the one-way valve 100 on the piston is opened, oil in the piston inner ring cavity 200 can enter the piston outer ring cavity 300 through the one-way valve 100, and quick oil return of the double-cavity piston type clutch is achieved.

As shown in fig. 2, the check valve 100 includes a valve seat 1 and a blocking member 2, a valve cavity 11 is formed in the valve seat 1, and the periphery of the blocking member 2 is in threaded connection with the inner wall of the valve cavity 11, so that the valve seat 1 and the blocking member 2 can be stably connected, the blocking member 2 can be prevented from falling off from the valve seat 1, and the service life of the dual-cavity piston clutch is prolonged. In addition, the outer side surface of the barrier 2 is provided with a groove 21, the cross section of the groove 21 is polygonal, and the present embodiment further provides a disassembling tool 400 as shown in fig. 3, which is used for disassembling the check valve 100, the disassembling tool 400 includes a handle 401 and a disassembling head 402 that are connected, and the shape and size of the cross section of the disassembling head 402 are the same as the shape and size of the cross section of the groove 21. When the barrier member 2 needs to be detached from the valve seat 1, an operator only needs to mount the detaching head 402 into the groove 21 and then rotate the detaching handle 401, so that the barrier member 2 can be rapidly detached from the valve seat 1.

As shown in fig. 3, the outer periphery of the blocking member 2 is provided with an external thread 22, the inner wall of the valve seat 1 is provided with an internal thread 111 matched with the external thread 22, the connection length between the external thread 22 and the internal thread 111 is 5 mm-7 mm, and the external thread 22 and the internal thread 111 are longer in connection length, so that the valve seat 1 and the blocking member 2 can be stably connected, the blocking member 2 mounted on the valve seat 1 is prevented from falling off in the use process, and the normal use of the dual-cavity piston clutch is further ensured.

As shown in fig. 3-4, the dismounting tool 400 further includes a pressing element 403, the handle 401, the pressing element 403, and the dismounting head 402 are connected in sequence, and the size of the cross section of the pressing element 403 is larger than that of the cross section of the groove 21. When the blocking piece 2 is installed in place, the end face of the valve seat 1 and the end face of the blocking piece 2 are spaced by L, wherein L is 1.5 mm-3 mm in length approximately, when the disassembling and assembling tool 400 is used for installing the blocking piece 2, the pressing piece 403 can extrude the section of material, after the extruded material deforms, a limiting part 3 which is inwards and convexly arranged on the inner wall of the valve seat 1 is formed, and the limiting part 3 can limit the blocking piece 2 to be separated from the valve cavity 11. The check valve 100 of the present embodiment is secured by the threads and the stopper 3 to prevent the diaphragm 2 from being removed from the valve chamber 11. When the disassembling tool 400 is used for installing the barrier piece 2, the disassembling tool 400 can form the limiting part 3 integrated with the valve seat 1, the operation is simple, and the installation efficiency of the check valve 100 can be improved.

For ease of understanding, the process of mounting the diaphragm 2 to the valve seat 1 will be described with reference to fig. 3 and 4:

as shown in fig. 3, an operator firstly extends a mounting and dismounting head 401 of the mounting and dismounting tool 400 into the groove 21 for positioning the mounting and dismounting tool 400, the operator then screws the handle 401 to screw the blocking member 2 into the valve seat 1, when the blocking member 2 is screwed into the valve seat 1 to a certain depth, the operator continues to screw the handle 401, the pressing member 403 can crush and deform a part of the material of the valve seat 1, so as to form a limiting portion 3 as shown in fig. 4, the thickness of the limiting portion 3 is 0.5mm to 2mm, and the limiting portion 3 with the thickness can further effectively prevent the blocking member 2 from coming off from the valve seat 1.

As shown in fig. 5, the cross section of the groove 21 is a regular polygon, and the mounting/dismounting head 402 can be inserted into the groove 21 at various angles to match with the groove 21, so that the alignment efficiency of the groove 21 and the mounting/dismounting head 402 can be improved, and the mounting/dismounting efficiency of the barrier member 2 and the valve seat 1 can be improved. The regular polygon can be a regular triangle, a square, a regular pentagon, a regular hexagon, etc. Regular polygon in this embodiment is preferably regular hexagon, and the contact surface of dismouting head 402 and recess 21 is more, can effectively reduce the contact pressure of single contact surface, and dismouting head 402 can avoid the contact surface of dismouting head 402 to be squashed in the course of the work, guarantees the longer life of dismouting head 402.

As shown in fig. 5 and 6, the bottom wall 211 of the groove 21 is provided with four through holes 2111, oil in the piston inner ring cavity 200 can enter the piston outer ring cavity 300 through the through holes 2111, wherein the diameter of the ball 4 is set to be larger than that of the through holes 2111, so that the ball 4 can be prevented from flowing out of the valve seat 1 along with the oil from the valve seat 1. In addition, as shown in fig. 5, the four through holes 2111 are uniformly distributed along the circumferential direction of the barrier member 2, so that the oil can stably pass through the barrier member 2, the force applied to the barrier member 2 is balanced, and the service life of the barrier member 2 is prolonged. In other embodiments, the number of the through holes 2111 is not limited to four, and may be one, two, three, or more.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, there may be variations in the specific implementation and application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. The check valve comprises a valve seat (1) and a blocking piece (2), wherein a valve cavity (11) is formed in the valve seat (1), the periphery of the blocking piece (2) is in threaded connection with the inner wall of the valve cavity (11), and the check valve is characterized in that a groove (21) is formed in the outer side face of the blocking piece (2), and the cross section of the groove (21) is polygonal.

2. A non-return valve according to claim 1, characterised in that the cross-section of the groove (21) is a regular polygon.

3. A non-return valve according to claim 2, characterised in that the cross-section of the recess (21) is regular hexagonal.

4. The check valve according to claim 1, characterized in that the inner wall of the valve chamber (11) is provided with a limiting part (3) protruding inwards, and the limiting part (3) can limit the separation of the barrier member (2) from the valve chamber (11).

5. A non-return valve according to claim 4, characterised in that the stop (3) is formed integrally with the valve seat (1).

6. The check valve according to claim 1, characterized in that the outer circumference of the barrier member (2) is provided with an external thread (22), the inner wall of the valve seat (1) is provided with an internal thread (111) matched with the external thread (22), and the connection length of the external thread (22) and the internal thread (111) is 5 mm-7 mm.

7. The check valve according to claim 1, wherein the check valve (100) further comprises a ball (4), a through hole (2111) is opened in the bottom wall (211) of the groove (21), and the diameter of the ball (4) is larger than that of the through hole (2111).

8. A clutch, characterized in that it comprises a one-way valve (100) according to any one of claims 1 to 7.

9. A disassembling and assembling tool is characterized in that the disassembling and assembling tool is used for disassembling and assembling the check valve (100) according to any one of claims 1 to 7, the disassembling and assembling tool (400) comprises a handle (401) and a disassembling head (402) which are connected, and the shape and the size of the cross section of the disassembling head (402) are the same as those of the cross section of the groove (21).

10. The disassembly and assembly tool of claim 9, wherein the disassembly and assembly tool (400) further comprises a pressing piece (403), the handle (401), the pressing piece (403) and the disassembly head (402) are connected in sequence, and the size of the cross section of the pressing piece (403) is larger than that of the cross section of the groove (21).