CN210716137U

CN210716137U - Check joint for valve body lubrication

Info

Publication number: CN210716137U
Application number: CN201921843166.4U
Authority: CN
Inventors: 朱海涛
Original assignee: Changzhou Haiying Hardware Technology Co ltd
Current assignee: Changzhou Haiying Hardware Technology Co ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-06-09
Anticipated expiration: 2029-10-30

Abstract

The utility model discloses a non-return joint for lubricating a valve body, which comprises a shell, an upper limiting piece and a lower limiting piece, wherein a through circulation channel is arranged in the shell, the top part of the shell is in threaded connection with a cover cap, the inside of the circulation channel is provided with the upper limiting piece and the lower limiting piece, the upper limiting piece comprises an upper limiting bracket and an upper limiting seat, the lower limiting piece comprises a lower limiting bracket and a lower limiting seat, the upper end in the circulation channel is provided with an upper sphere, the bottom of the upper sphere is fixedly provided with the upper limiting bracket, the bottom of the upper limiting bracket is fixedly provided with a lower sphere through a primary spring, the utility model has simple structure, realizes double-layer sealing protection of the joint, the upper limiting piece and the lower limiting piece limit the sphere, and avoids the damage of the spring deformation caused by the overlarge compression deformation of the spring in the joint due to the overlarge pressure of a grease gun, guarantee the leakproofness and the life of joint, the practicality is stronger.

Description

Check joint for valve body lubrication

Technical Field

The utility model relates to a non return connects, in particular to non return connects for valve body is lubricated belongs to the non return and connects technical field.

Background

Generally, joints are arranged on various large-sized valve bodies, the joints play a role in communicating the valve bodies with grease injection equipment, and are key connecting parts for injecting lubricant into the valve bodies to protect the internal structures of the valve bodies to normally work.

The mode that connects at present and adopt sealed block seals the joint, and this kind of is sealed can receive the liquid impact force inside the block when the valve body is excreted, along with increase, the sealing performance reduction of time, and sealed effect is unsatisfactory, and the practicality is relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a lubricated non return joint of using of valve body has solved the problem that prior art exists.

In order to solve the above-mentioned technique and connect the mode that adopts the sealing cap at present and seal the joint, this kind of sealed inside liquid impact force that can receive of cap when the valve body excretes, along with increase, the sealing performance of time reduce, the unsatisfactory problem of sealed effect, the utility model provides a following technical scheme:

the utility model relates to a lubricated non return of using of valve body connects, including casing, last spacing piece and lower spacing piece, the circulation passageway that link up is seted up to the inside of casing, the top threaded connection of casing has the block, the inside of circulation passageway is provided with spacing piece and lower spacing piece, go up the spacing piece and include spacing support and last spacing seat down, spacing piece includes spacing support and lower spacing seat down, the inside upper end of circulation passageway is provided with the spheroid, go up spheroidal bottom fixed mounting and have last spacing support, the bottom of going up spacing support has lower spheroid through one-level spring fixed mounting, spacing support is down gone up to spheroidal bottom fixed mounting down, the bottom of spacing support is passed through the interior bottom fixed mounting of second grade spring and circulation passageway down.

As a preferred technical scheme of the utility model, go up spacing support and constitute by a support section of thick bamboo and limiting plate with lower spacing support, a support section of thick bamboo fixed mounting is between spheroid and spring, equal fixed mounting has the limiting plate on the relative both sides of a support section of thick bamboo.

As a preferred technical scheme of the utility model, go up the spacing seat and be provided with two, two with the equal symmetry of spacing seat down go up spacing seat fixed mounting on the circulation passageway inner wall between the limiting plate of last spacing support and one-level spring, two spacing seat fixed mounting is down on the circulation passageway inner wall between the limiting plate of spacing support and the second grade spring.

As a preferred technical scheme of the utility model, the circulation passageway is set up by the different access connection of two sections diameters, just the top of circulation passageway is provided with primary seal terminal surface, and two sections access connection departments are provided with secondary seal terminal surface, go up spheroidal last sphere and the laminating setting of primary seal terminal surface, spheroidal last sphere and the laminating setting of secondary seal terminal surface down.

As an optimized technical proposal of the utility model, the inner wall of the circulation channel is provided with a wear-resistant spraying layer.

As an optimized technical scheme of the utility model, be provided with external connection screw thread on the outer wall of casing lower extreme.

The utility model provides a non return connects for valve body is lubricated. Compared with the prior art, the method has the following beneficial effects:

the check joint for lubricating the valve body is simple in structure and convenient to use, double-layer sealing protection of the joint is realized under the action of a first-stage spring and a second-stage spring by installing the ball body and the lower ball body in a circulation channel of the joint, grease injection lubricating treatment is convenient to be carried out on the valve body by installing the joint on the valve body, an upper limiting piece and a lower limiting piece are arranged in the circulation channel, the upper limiting piece is used for limiting and supporting a limiting plate on an upper limiting support, the lower limiting piece is used for limiting and supporting a limiting plate on a lower limiting support, after the ball body moves downwards to a certain degree, when lubricant can circulate in the circulation channel, the ball body does not move any more, the phenomenon that the compression deformation of the spring in the joint is too large and the deformation of the spring is damaged due to overlarge pressure of a grease injection gun is avoided, the attaching degree between the ball body reset by the spring and a sealing, the practicability is stronger.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a structural sectional view of the housing of the present invention;

fig. 3 is a schematic view of the internal structure of the flow channel of the present invention;

fig. 4 is a schematic structural view of the upper limit bracket and the lower limit bracket of the present invention.

In the figure: 1. a housing; 2. a flow-through channel; 21. primary sealing the end face; 22. sealing the end face for the second time; 3. capping; 4. an upper limiting member; 41. an upper limiting bracket; 42. an upper limiting seat; 5. a lower retainer; 51. a lower limiting bracket; 52. a lower limit seat; 6. an upper sphere; 7. a lower sphere; 8. a primary spring; 9. a secondary spring; 10. a support cylinder; 11. a limiting plate; 12. and external connecting threads.

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.

Example (b): as shown in figures 1-4, the utility model relates to a check joint for lubricating a valve body, which comprises a shell 1, an upper limiting piece 4 and a lower limiting piece 5, a through flow channel 2 is arranged in the shell 1, a cap 3 is connected with the top of the shell 1 in a threaded manner, an upper limiting piece 4 and a lower limiting piece 5 are arranged in the flow channel 2, the upper limiting piece 4 comprises an upper limiting bracket 41 and an upper limiting seat 42, the lower limiting member 5 comprises a lower limiting bracket 51 and a lower limiting seat 52, an upper ball 6 is arranged at the upper end inside the flow channel 2, the bottom of the upper sphere 6 is fixedly provided with an upper limiting bracket 41, the bottom of the upper limiting bracket 41 is fixedly provided with a lower sphere 7 through a primary spring 8, the bottom of the lower sphere 7 is fixedly provided with a lower limiting bracket 51, and the bottom of the lower limiting bracket 51 is fixedly arranged with the inner bottom of the circulation channel 2 through a secondary spring 9.

The upper limiting support 41 and the lower limiting support 51 are composed of a supporting cylinder 10 and a limiting plate 11, the supporting cylinder 10 is fixedly installed between a ball body and a spring, the two opposite sides of the supporting cylinder 10 are respectively and fixedly provided with the limiting plate 11, the upper limiting seat 42 and the lower limiting seat 52 are respectively and symmetrically arranged two, the upper limiting seat 42 is fixedly installed on the inner wall of the circulation channel 2 between the limiting plate 11 of the upper limiting support 41 and the primary spring 8, the lower limiting seat 52 is fixedly installed on the inner wall of the circulation channel 2 between the limiting plate 11 of the lower limiting support 51 and the secondary spring 9, the movement process of the ball body is limited, the limitation on the compression of the spring is achieved, the excessive deformation of the spring caused by the excessive grease injection pressure is avoided, the circulation channel 2 is formed by connecting two sections of channels with different diameters, and the top end surface of the circulation channel 2 is provided with a primary sealing end surface 21, two sections channel connection departments are provided with secondary seal terminal surface 22, go up the last sphere and the laminating setting of primary seal terminal surface 21 of spheroid 6, and the last sphere and the laminating setting of secondary seal terminal surface 22 of lower spheroid 7, double-deck sealed protectiveness is better, the inner wall of circulation passageway 2 is provided with wear-resisting spraying layer, improves circulation passageway 2's wear resistance, be provided with external connection screw thread 12 on the outer wall of casing 1 lower extreme, conveniently carry out the threaded mounting between butt joint and the valve body.

Specifically, when the utility model is used, firstly, the non-return joint is installed on the valve body through the external connecting thread 12 on the shell 1, under the non-grease injection state, the first-level spring 8 and the second-level spring 9 inside the joint flow channel 2 are in the natural no-external force state and are supported by the springs, the upper end of the upper ball 6 is abutted on the first sealing end surface 21, the upper end of the lower ball 7 is abutted on the second sealing end surface 22, the double-layer sealing of the joint internal flow channel 2 is realized through the attachment of the ball end surface and the sealing end surface of the flow channel 2, when the valve body is excreted, the liquid enters the flow channel 2 from the bottom of the joint and impacts the bottom of the lower ball 7, so that the lower ball 7 is more closely attached to the second sealing end surface 22, during grease injection, the cover cap 3 on the shell 1 is opened, the grease injection gun is installed with the upper end of the joint, the lubricant is injected into the flow channel 2 from, the upper ball body 6 in the circulation channel 2 is pressed by the fluid injected by the grease gun, so that the upper ball body 6 moves to one side far away from the grease gun, thereby compressing the first-stage spring 8 between the upper ball body 6 and the lower ball body 7, the first-stage spring 8 is compressed to deform and then push the lower ball body 7 to move to one side far away from the upper ball body 6, and compressing the second-stage spring 9, the upper ball body 6 and the lower ball body 7 move, so that the ball bodies are separated from the sealing end face, namely, the ball bodies and the circulation channel 2 are in an opening state, the lubricant can circulate in the circulation channel 2, and the purpose of lubricating the valve body is achieved, because the upper limiting support 41 is fixedly installed at the bottom of the upper ball body 6, the lower limiting support 51 is fixedly installed at the bottom of the lower ball body 7, the limiting support is composed of a support cylinder 10 and a limiting plate 11, and the two upper limiting seats 42 are fixedly installed on the inner wall, two lower limit seat 52 fixed mounting are on the 2 inner walls of circulation passageway between limiting plate 11 of lower limit support 51 and the second grade spring 9, it supports to last limiting plate 11 spacing on the spacing support 41 to go up limiting seat 42, lower limit seat 52 is to limiting plate 11 spacing support on the spacing support 51 down, make the spheroid move down after the certain degree, when emollient can circulate in circulation passageway 2, the spheroid no longer moves, the too big spring compression deformation that leads to of joint that avoids annotating the too big influence of fat rifle pressure is impaired, make the laminating degree reduce between spheroid and the seal face through spring reset, guarantee the leakproofness and the life that connect, the practicality is stronger.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The check joint for lubricating the valve body is characterized by comprising a shell (1), an upper limiting piece (4) and a lower limiting piece (5), a through circulation channel (2) is formed in the shell (1), a cover cap (3) is connected to the top of the shell (1) in a threaded manner, the upper limiting piece (4) and the lower limiting piece (5) are arranged in the circulation channel (2), the upper limiting piece (4) comprises an upper limiting support (41) and an upper limiting seat (42), the lower limiting piece (5) comprises a lower limiting support (51) and a lower limiting seat (52), an upper sphere (6) is arranged at the upper end of the interior of the circulation channel (2), the upper limiting support (41) is fixedly installed at the bottom of the upper sphere (6), and a lower sphere (7) is fixedly installed at the bottom of the upper limiting support (41) through a primary spring (8), the bottom of the lower sphere (7) is fixedly provided with a lower limiting support (51), and the bottom of the lower limiting support (51) is fixedly arranged with the inner bottom of the circulation channel (2) through a secondary spring (9).

2. The check joint for lubricating the valve body according to claim 1, wherein the upper limiting bracket (41) and the lower limiting bracket (51) are both composed of a supporting cylinder (10) and a limiting plate (11), the supporting cylinder (10) is fixedly installed between the ball body and the spring, and the limiting plates (11) are fixedly installed on two opposite sides of the supporting cylinder (10).

3. The check joint for lubricating the valve body according to claim 2, wherein the upper limiting seat (42) and the lower limiting seat (52) are symmetrically provided with two, the two upper limiting seats (42) are fixedly mounted on the inner wall of the flow channel (2) between the limiting plate (11) of the upper limiting bracket (41) and the primary spring (8), and the two lower limiting seats (52) are fixedly mounted on the inner wall of the flow channel (2) between the limiting plate (11) of the lower limiting bracket (51) and the secondary spring (9).

4. The check joint for lubricating the valve body according to claim 1, wherein the flow passage (2) is formed by connecting two passages with different diameters, a primary sealing end surface (21) is arranged at the top end of the flow passage (2), a secondary sealing end surface (22) is arranged at the joint of the two passages, an upper spherical surface of the upper sphere (6) is attached to the primary sealing end surface (21), and an upper spherical surface of the lower sphere (7) is attached to the secondary sealing end surface (22).

5. Check joint for lubrication of valve bodies according to claim 1, characterised in that the inner wall of the flow channel (2) is provided with a wear resistant spray coating.

6. A check joint for lubrication of a valve body according to claim 1, wherein an external connection thread (12) is provided on an outer wall of a lower end of the housing (1).