CN210716138U

CN210716138U - Double-ball non-return joint with good sealing performance

Info

Publication number: CN210716138U
Application number: CN201921843996.7U
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 double-ball non-return joint with good sealing performance, which comprises an outer shell, a wear-resistant sealing component, an upper ball body and a lower ball body, wherein an inner cavity is arranged inside the outer shell, an inlet is arranged at the top of the outer shell, an outlet is arranged at the bottom of the outer shell, the inlet and the outlet are respectively communicated with two ends of the inner cavity, the inner cavity is formed by the communication of two sections of first circular channels and second circular channels with different diameters, the first circular channel and the second circular channel and the first circular channel and the inlet are connected through transition channels with conical structures, the wear-resistant sealing component is arranged inside the inner cavity, the structure of the utility model is simple, the ball body is attached with a sealing washer on the inner cavity, the purpose of double-ball non-return of the joint is achieved, the elasticity of the sealing washer and a spring ensures that the ball body is more, and the repeated collision friction loss of the ball body and the inner wall of the joint is reduced.

Description

Double-ball non-return joint with good sealing performance

Technical Field

The utility model relates to a non return connects, in particular to double ball non return that leakproofness is good connects 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 double ball non return that connects the adoption at present connects can connect inside removal through two spheroids under the effect of spring for connect and open or sealed, and the spheroid relapse with the inner wall collision friction who connects interior cavity, the loss is great, and after the inner wall of cavity and spheroid wearing and tearing to a certain extent, the support of spring no longer makes spheroid and interior cavity laminating, influences the effect and the life that connect double ball seal, and the practicality is relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a two ball non return that the leakproofness is good connects has solved the problem that prior art exists.

In order to solve the two balls non return that the above-mentioned technique connects the adoption at present and to connect the inside removal through two spheroids under the effect of spring for connect and open or seal, and the spheroid relapse with the inner wall collision friction who connects interior cavity, the loss is great, after the inner wall and the spheroid wearing and tearing of interior cavity reached certain degree, the support of spring no longer made spheroid and interior cavity laminating, the influence connects the sealed effect of two balls and life's problem, the utility model provides a following technical scheme:

the utility model relates to a double-ball non-return joint with good sealing performance, which comprises an outer shell, a wear-resistant sealing component, an upper ball body and a lower ball body, wherein the inner part of the outer shell is provided with an inner cavity, the top part of the outer shell is provided with an inlet, the bottom part of the outer shell is provided with an outlet, the inlet and the outlet are respectively communicated with the two ends of the inner cavity, the inner cavity is formed by communicating two sections of first circular channels and second circular channels with different diameters, the first circular channels and the second circular channels and the first circular channels and the inlet are connected through transition channels with conical structures, the wear-resistant sealing component is arranged inside the inner cavity, the end of the first circular channel, which is close to the inlet, is provided with the upper ball body, the end of the second circular channel, which is far away from the outlet, is provided with the lower ball body, and the upper ball body, one end of the interior of the second circular channel, which is close to the outlet, is fixedly provided with a lower spring, and the lower spring is fixedly connected with the lower ball body through a support.

As a preferred technical scheme of the utility model, wear-resisting seal assembly includes draw-in groove and seal ring, the draw-in groove has all been seted up on the transition passageway inner wall of import lower extreme inner wall and below and on the transition passageway inner wall of first circular passageway lower extreme inner wall and below, there is seal ring inside the draw-in groove through hexagon socket head cap screw fixed mounting.

As a preferred technical scheme of the utility model, the diameter of first circular passageway is less than the diameter of the circular passageway of second, go up spheroidal diameter and be less than spheroidal diameter down, and the spring natural state down goes up spheroidal upper end and spheroidal upper end down and sets up with corresponding seal ring laminating respectively.

As a preferred technical scheme of the utility model, seal ring adopts NBR nitrile rubber sealing material to make.

As a preferred technical scheme of the utility model, go up the spring and all adopt the cylinder spring setting with lower spring, the diameter of export is less than the diameter of lower spring.

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

The utility model provides a two ball non return that leakproofness is good connects. Compared with the prior art, the method has the following beneficial effects:

the double-ball non-return joint with good sealing performance is simple in structure and convenient to use, an upper ball body and a lower ball body which are arranged inside an inner cavity body through an upper spring and a lower spring are arranged, clamping grooves are formed in a transition channel on the inner wall of the lower end of an inlet and below the inner wall of the lower end of a first circular channel and a transition channel below the inner wall of the lower end of the first circular channel, sealing washers made of NBR nitrile rubber sealing materials are fixedly arranged inside the clamping grooves through inner hexagonal bolts, under the natural no-external-force state, the upper ends of the upper ball body and the lower ball body are attached to the sealing washers on the inner wall of the inner cavity body through supporting balance between the upper spring and the lower spring, the double-ball non-return purpose of the joint is achieved, the existing joint is changed to adopt a discharge end cover design, the elasticity of the sealing washers and the springs enables the ball, the effect of joint double-ball sealing is improved, the leakage of the joint is prevented when the discharge is carried out, and 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 view of the present invention in a sealed state;

fig. 2 is a schematic structural view of the present invention in an open state;

FIG. 3 is an enlarged view of the point A of FIG. 1 according to the present invention;

fig. 4 is a schematic structural view of a sealing gasket of the present invention;

fig. 5 is a schematic structural view of the inner cavity of the present invention.

In the figure: 1. an outer housing; 2. an inner cavity; 21. a first circular channel; 22. a second circular channel; 23. A transition passage; 3. a wear seal assembly; 31. a card slot; 32. a sealing gasket; 33. a hexagon socket head cap screw; 4. an inlet; 5. an outlet; 6. an upper sphere; 7. a lower sphere; 8. an upper spring; 9. a support; 10. and a lower spring.

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 fig. 1-5, the utility model relates to a double ball check joint with good sealing performance, which comprises an outer shell 1, a wear-resistant sealing component 3, an upper ball body 6 and a lower ball body 7, an inner cavity 2 is arranged in the outer shell 1, an inlet 4 is arranged on the top of the outer shell 1, an outlet 5 is arranged on the bottom of the outer shell 1, the inlet 4 and the outlet 5 are respectively communicated with two ends of the inner cavity 2, the inner cavity 2 is formed by communicating two sections of a first circular channel 21 and a second circular channel 22 with different diameters, the first circular channel 21 and the second circular channel 22 and the first circular channel 21 and the inlet 4 are connected through a transition channel 23 with a conical structure, the wear-resistant sealing component 3 is arranged in the inner cavity 2, the upper ball body 6 is arranged at one end of the first circular channel 21 close to the inlet 4, the end, far away from the outlet 5, of the inside of the second circular channel 22 is provided with a lower ball body 7, the upper ball body 6 is fixedly connected with the lower ball body 7 through an upper spring 8, the end, near the outlet 5, of the inside of the second circular channel 22 is fixedly provided with a lower spring 10, and the lower spring 10 is fixedly connected with the lower ball body 7 through a support 9.

The wear-resistant sealing assembly 3 comprises a clamping groove 31 and a sealing washer 32, the clamping groove 31 is formed in the inner wall of a transition channel 23 at the lower end of the inlet 4 and below the inner wall of the transition channel 23 and the inner wall of a transition channel 23 at the lower end of the first circular channel 21 and below the inner wall of the transition channel, the clamping groove 31 is internally and fixedly provided with the sealing washer 32 through an inner hexagon socket head cap screw 33, the ball body and the washer are more tightly attached due to the elasticity of the sealing washer 32 and a spring, the ball body can be protected by the washer, the repeated collision friction loss of the ball body and the inner wall of the joint inner cavity 2 is reduced, the double-ball sealing effect of the joint is improved, the service life of the double-ball sealing joint is prolonged, the diameter of the first circular channel 21 is smaller than that of the second circular channel 22, the diameter of the upper ball body 6 is, the sealing washer 32 is made of NBR nitrile rubber sealing material, is wear-resistant and good in sealing performance, the upper spring 8 and the lower spring 10 are both arranged by cylindrical springs, the diameter of the outlet 5 is smaller than that of the lower spring 10, the deformation stability of the lower spring 10 is guaranteed, external threads are arranged on the outer wall of the lower end of the outer shell 1, and a connector can be conveniently installed on a valve body through threads.

Specifically, when the utility model is used, firstly, the outer shell 1 is installed on the valve body through the external thread, the grease injecting gun is installed through the inlet 4 and the non-return joint, the lubricant is injected into the inner cavity 2 of the joint through the grease injecting gun through the inlet 4, the upper ball 6 in the first circular channel 21 is pressed by the fluid injected by the grease injecting gun, so that the upper ball 6 moves to one side far away from the inlet 4, thereby compressing the upper spring 8 between the upper ball 6 and the lower ball 7, the upper spring 8 is compressed to generate deformation to push the lower ball 7 to move to one side far away from the first circular channel 21, and the lower spring 10 is compressed through the bracket 9, because of the natural no external force state, the upper end of the upper ball 6 and the upper end of the lower ball 7 are both attached to the sealing washer 32 on the inner wall of the inner cavity 2 by utilizing the supporting balance between the upper spring 8 and the lower spring 10, and under, the ball body moves and is separated from the sealing washer 32, so that the lubricant enters the first circular channel 21 and the second circular channel 22 and is finally discharged from the outlet 5 to enter the interior of the valve body, the aim of lubricating the valve body is achieved, the purpose of double-ball non-return of the joint is achieved, the existing joint adopts a discharge end cover design is changed, as the clamping grooves 31 are respectively arranged on the inner wall of the lower end of the inlet 4 and the transition channel 23 below the inner wall of the lower end of the first circular channel 21, the sealing washer 32 made of NBR nitrile rubber sealing material is fixedly arranged in the clamping grooves 31 through the hexagon socket head cap screw 33, the elasticity of the sealing washer 32 and the spring ensures that the ball body is more tightly attached to the sealing washer, the sealing washer can protect the ball body, the repeated, after the grease is injected, under the action of spring reset, the upper ends of the upper ball body 6 and the lower ball body 7 are pressed with the sealing washer 32 again, leakage of the joint during discharge is prevented, and the practicability is higher.

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 double-ball non-return joint with good sealing performance is characterized by comprising an outer shell (1), a wear-resistant sealing component (3), an upper ball body (6) and a lower ball body (7), wherein an inner cavity (2) is formed in the outer shell (1), an inlet (4) is formed in the top of the outer shell (1), an outlet (5) is formed in the bottom of the outer shell (1), the inlet (4) and the outlet (5) are respectively communicated with two ends of the inner cavity (2), the inner cavity (2) is formed by communicating two sections of first circular channels (21) and second circular channels (22) with different diameters, the first circular channels (21) and the second circular channels (22) and the first circular channels (21) and the inlet (4) are connected through transition channels (23) of a conical structure, the wear-resistant sealing component (3) is arranged in the inner cavity (2), the ball-shaped water-saving device is characterized in that one end, close to the inlet (4), of the inner portion of the first circular channel (21) is provided with an upper ball body (6), one end, far away from the outlet (5), of the inner portion of the second circular channel (22) is provided with a lower ball body (7), the upper ball body (6) is fixedly connected with the lower ball body (7) through an upper spring (8), one end, close to the outlet (5), of the inner portion of the second circular channel (22) is fixedly provided with a lower spring (10), and the lower spring (10) is fixedly connected with the lower ball body (7) through a support (9).

2. The double-ball check joint with good sealing performance as claimed in claim 1, wherein the wear-resistant sealing component (3) comprises a clamping groove (31) and a sealing washer (32), the clamping groove (31) is formed in the inner wall of the lower end of the inlet (4) and the inner wall of the transition passage (23) below the inner wall, the inner wall of the lower end of the first circular passage (21) and the inner wall of the transition passage (23) below the inner wall, and the sealing washer (32) is fixedly mounted in the clamping groove (31) through an inner hexagon bolt (33).

3. The double-ball check joint with good sealing performance as claimed in claim 2, wherein the diameter of the first circular channel (21) is smaller than that of the second circular channel (22), the diameter of the upper ball body (6) is smaller than that of the lower ball body (7), and the upper end of the upper ball body (6) and the upper end of the lower ball body (7) are respectively attached to the corresponding sealing gaskets (32) in a natural state of the spring.

4. A double ball check joint with good sealing performance as claimed in claim 3, wherein the sealing washer (32) is made of NBR nitrile rubber sealing material.

5. The double-ball check joint with good sealing performance as claimed in claim 1, wherein the upper spring (8) and the lower spring (10) are arranged by cylindrical springs, and the diameter of the outlet (5) is smaller than that of the lower spring (10).

6. The double ball check joint with good sealing performance as claimed in claim 1, wherein the outer wall of the lower end of the outer shell (1) is provided with external threads.