CN214743375U

CN214743375U - Check valve with exhaust structure

Info

Publication number: CN214743375U
Application number: CN202121199748.0U
Authority: CN
Inventors: 颜土富; 朱建武; 王建; 邱士军; 陈婷婷
Original assignee: Leo Group Zhejiang Pump Co Ltd
Current assignee: Leo Group Zhejiang Pump Co Ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2021-11-16
Anticipated expiration: 2031-05-31

Abstract

The utility model belongs to the technical field of the valve, refer in particular to a take exhaust structure's check valve, connect and the case including the check valve, the inside cavity of check valve joint forms fluid passage, the case sets up and seals and open fluid passage in fluid passage, the check valve of case below connects and is equipped with the gas passage that the intercommunication check valve connects the outside in, be equipped with the spherical rolling piece that seals and open gas passage in the gas passage. The utility model discloses be equipped with exhaust structure, effectively exhaust the pump body, solved the water pump because of the exhaust difficulty that outlet pipe ponding caused and the unable problem of going out water of secondary work that leads to.

Description

Check valve with exhaust structure

The technical field is as follows:

the utility model belongs to the technical field of the valve, refer in particular to a take exhaust structure's check valve.

Background art:

the stop valve can be installed usually to the water pump delivery port, prevents that the water in the outlet pipe from backflowing after the water pump shuts down, but the water in the outlet pipe also can make some bad water pumps of exhaust can't go out water at the secondary during operation.

The invention content is as follows:

the utility model aims at providing a take exhaust structure's check valve, it is equipped with exhaust structure, effectively exhausts to the pump body, has solved the problem that the water pump can't go out water because of the exhaust difficulty that outlet pipe ponding caused and the secondary work that leads to.

The utility model discloses a realize like this:

a check valve with an exhaust structure comprises a check valve joint and a valve core, wherein a fluid channel is formed in the check valve joint in a hollow mode, the valve core is arranged in the fluid channel and used for closing and opening the fluid channel, an air channel communicated with the outer side of the check valve joint is arranged in the check valve joint below the valve core, and a spherical rolling piece used for closing and opening the air channel is arranged in the air channel.

In the check valve with the exhaust structure, the gas channel is communicated with the outer side of the check valve joint through the gas outlet hole formed in the side wall of the check valve joint, the upper end of the gas channel is provided with the conical surface with the radius being small at the top and large at the bottom, and the spherical rolling part is abutted against the conical surface to seal the gas channel.

In the check valve with the exhaust structure, the check block for limiting the spherical rolling piece in the gas channel is arranged below the gas channel.

In the check valve with the exhaust structure, more than two check blocks are uniformly distributed on the circumference of each check block, the inner side surfaces of the check blocks are arc surfaces, and the radius of each arc surface is smaller than that of each spherical rolling element.

In the check valve with the exhaust structure, a valve seat for limiting the valve core upwards and a limiting step for limiting the valve core downwards are arranged in the check valve joint, a return spring is arranged between the valve seat and the valve core, and an O-shaped ring sleeved on the valve core is arranged between the valve core and the inner wall surface of the check valve joint.

In the above-mentioned check valve with an exhaust structure, the valve core includes a sealing portion and a guide portion arranged on the sealing portion, the O-ring is sleeved on the sealing portion, the return spring is sleeved on the guide portion, the valve seat is provided with a guide hole, and the upper end of the guide portion is slidably arranged in the guide hole.

In the check valve with the exhaust structure, the upper end of the check valve connector is connected with the water outlet pipe, the lower end of the check valve connector is connected with the loose connector, and the loose connector is screwed on the water outlet of the water pump.

In the check valve with the air discharge structure, the material of the ball rolling member is steel, iron, aluminum or glass.

Compared with the prior art, the utility model outstanding advantage is:

1. the check valve joint below the valve core of the utility model is internally provided with the gas channel communicated with the outside of the check valve joint, and the gas channel is internally provided with the spherical rolling piece for closing and opening the gas channel, so that the pump body is effectively exhausted, and the problems of difficult exhaust caused by water accumulation of the water outlet pipe of the water pump and incapability of water discharge in secondary work are solved;

2. the utility model discloses a gas passage upper end is equipped with the big conical surface about the radius, spherical rolling member seals gas passage with the conical surface is inconsistent, seals effectually.

Description of the drawings:

fig. 1 is a cross-sectional view of the present invention;

fig. 2 is an exploded view of the present invention.

Reference numerals: 1. a check valve fitting; 11. a fluid channel; 12. a gas channel; 13. an air outlet; 14. a conical surface; 15. a stopper; 16. an inner side surface; 17. a limiting step; 2. a valve core; 21. a sealing part; 22. a guide portion; 3. a spherical rolling member; 4. a valve seat; 41. a guide hole; 5. a return spring; 6. an O-shaped ring; 7. a flexible joint.

The specific implementation mode is as follows:

the invention will now be further described with reference to specific embodiments, with reference to figures 1-2:

a check valve with an exhaust structure comprises a check valve joint 1 and a valve core 2, wherein a fluid channel 11 is formed in the check valve joint 1 in a hollow mode, the valve core 2 is arranged in the fluid channel 11 and used for closing and opening the fluid channel 11, an air channel 12 communicated with the outer side of the check valve joint 1 is arranged in the check valve joint 1 below the valve core 2, and a spherical rolling piece 3 used for closing and opening the air channel 12 is arranged in the air channel 12.

The utility model discloses a theory of operation: as shown in fig. 1, when the water pump works for the second time, because there is air in the pump body, the water pressure is not large, the ball-shaped rolling element 3 falls to open the air channel 12, and the air is discharged from the air channel 12 to the outside of the check valve joint 1; when the gas in the pump body is exhausted, the spherical rolling element 3 is pushed up by the water pressure to seal the gas channel 12, at the moment, the water cannot flow out from the gas channel 12, and the water pressure is large enough to flow out from the fluid channel 11 because no gas exists in the pump body. The utility model discloses be equipped with exhaust structure, solved the water pump because of the exhaust difficulty that outlet pipe ponding caused and the unable problem of going out water of secondary work that leads to.

As shown in fig. 1, the structure of the gas passage 12 and the arrangement position of the ball rolling elements 3 are: the gas channel 12 is communicated with the outer side of the check valve joint 1 through a gas outlet hole 13 formed in the side wall of the check valve joint 1, a conical surface 14 with a small radius at the top and a large radius at the bottom is arranged at the upper end of the gas channel 12, the spherical rolling part 3 abuts against the conical surface 14 to seal the gas channel, and the sealing effect is good.

As shown in fig. 1 and 2, in order to prevent the ball rollers 3 from leaving the air passage 12 when the water pump stops operating, a stopper 15 for limiting the ball rollers 3 in the air passage 12 is provided below the air passage 12.

As shown in fig. 1 and 2, the structure of the stopper 15: more than two stop dogs 15 are uniformly distributed on the circumference, the inner side surface 16 of each stop dog 15 is an arc surface, and the radius of each arc surface is smaller than that of the spherical rolling element 3. The stop block 15 has simple structure and good limiting effect. In this embodiment, there are two blocks 15 distributed on the circumference.

The valve element 2 is arranged as shown in fig. 1: a valve seat 4 for limiting the valve core 2 upwards and a limiting step 17 for limiting the valve core 2 downwards are arranged in the check valve joint 1, and a return spring 5 is arranged between the valve seat 4 and the valve core 2; in order to better seal the fluid channel 11, an O-ring 6 sleeved on the valve core 2 is arranged between the valve core 2 and the inner wall surface of the check valve joint 1.

In order to guide the movement of the valve element 2, as shown in fig. 1 and 2, the valve element 2 includes a sealing portion 21 and a guiding portion 22 disposed on the sealing portion 21, the O-ring 6 is sleeved on the sealing portion 21, the return spring 5 is sleeved on the guiding portion 22, the valve seat 4 is provided with a guiding hole 41, and the upper end of the guiding portion 22 is slidably disposed in the guiding hole 41.

As shown in fig. 1, the connection structure of the check valve joint 1: the upper end of the check valve joint 1 is connected with a water outlet pipe, the lower end of the check valve joint 1 is connected with a movable joint 7, and the movable joint 7 is screwed on a water outlet of the water pump. The check valve joint 7 is arranged at the water outlet of the water pump through the movable joint 7, and is convenient to install.

Further, the material of the ball rolling elements 3 is steel, iron, aluminum or glass. In this embodiment, the spherical rolling member 3 is a steel ball, and is wear-resistant, good in sealing effect and long in service life.

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A check valve with a venting structure, comprising a check valve joint (1) and a valve core (2), wherein the check valve joint (1) is internally hollow to form a fluid passage (11), and the valve core (2) is arranged in the fluid passage (11) and closes and opens the fluid passage (11), and is characterized in that: an air channel (12) communicated with the outer side of the check valve joint (1) is arranged in the check valve joint (1) below the valve core (2), and a spherical rolling piece (3) for closing and opening the air channel (12) is arranged in the air channel (12).

2. The check valve with a venting structure as defined in claim 1, wherein: the gas channel (12) is communicated with the outer side of the check valve joint (1) through a gas outlet hole (13) formed in the side wall of the check valve joint (1), a conical surface (14) with a small radius at the upper part and a large radius at the lower part is arranged at the upper end of the gas channel (12), and the spherical rolling part (3) and the conical surface (14) are in contact with each other to seal the gas channel (12).

3. The check valve with a venting structure as set forth in claim 1 or 2, wherein: a stop block (15) for limiting the spherical rolling piece (3) in the gas channel (12) is arranged below the gas channel (12).

4. The check valve with a venting structure as defined in claim 3, wherein: the circumference of the stop block (15) is uniformly distributed with more than two, the inner side surface (16) of the stop block (15) is an arc surface, and the radius of the arc surface is smaller than that of the spherical rolling element (3).

5. The check valve with a venting structure as defined in claim 1, wherein: the check valve is characterized in that a valve seat (4) for limiting the valve core (2) upwards and a limiting step (17) for limiting the valve core (2) downwards are arranged in the check valve joint (1), a return spring (5) is arranged between the valve seat (4) and the valve core (2), and an O-shaped ring (6) sleeved on the valve core (2) is arranged between the valve core (2) and the inner wall surface of the check valve joint (1).

6. The check valve with a venting structure as defined in claim 5, wherein: the valve core (2) comprises a sealing portion (21) and a guide portion (22) arranged on the sealing portion (21), the sealing portion (21) is sleeved with an O-shaped ring (6), the guide portion (22) is sleeved with a return spring (5), a guide hole (41) is formed in the valve seat (4), and the upper end of the guide portion (22) is slidably arranged in the guide hole (41).

7. The check valve with a venting structure as defined in claim 1, wherein: the lower end of the check valve joint (1) is connected with a loose joint (7), and the loose joint (7) is screwed on a water outlet of the water pump.