CN216519788U

CN216519788U - Check valve convenient to maintain

Info

Publication number: CN216519788U
Application number: CN202122566451.XU
Authority: CN
Inventors: 季昌城
Original assignee: Wuhu Huayi Valve Manufacturing Co ltd
Current assignee: Wuhu Huayi Valve Manufacturing Co ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-05-13
Anticipated expiration: 2031-10-25

Abstract

The utility model discloses a check valve convenient to maintain, which comprises a valve body, wherein one side of the lower end of the valve body is provided with an input port communicated with the inside of the valve body, the other side of the lower end of the valve body is provided with an output port communicated with the inside of the valve body, the inner side of an upper port of the valve body is provided with a rotating seat, the rotating seat is connected with a threaded sealing cover, and the threaded sealing cover is provided with a rotating assembly for rotating the threaded sealing cover; through the rotation seat that sets up, elasticity buckle and rotary rod, can be when needs are maintained the check valve, dismantle the screw thread closing cap and get off, scratch out the rotary rod from elasticity buckle when dismantling, then pull two rotary rods and rotate the screw thread closing cap, and then can dismantle the screw thread closing cap and get off, need not the carrying tool during dismantlement, through pull the rotary rod bare-handed can, then the convenience is maintained the check valve and is overhauld.

Description

Check valve convenient to maintain

Technical Field

The utility model relates to the technical field of valves, in particular to a check valve convenient to maintain.

Background

The check valve is a valve whose opening and closing piece is a circular valve clack and can be operated by its self-weight and medium pressure to block back flow of medium. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). The valve is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. Otherwise, the valve is closed when the medium flows backwards. The existing check valve is of an integrally formed structure, if the check valve fails, the check valve is not favorable for maintenance and is troublesome to maintain and check.

The prior patent CN201820962619.4 proposes a fluorine-lined check valve convenient for maintenance, which is convenient for installation and disassembly between a cover plate and a valve body and convenient for workers to maintain the valve by adding a first mounting plate, a second mounting plate, a screw rod and a solenoid; through adding recess and lug, improve the stability that first mounting panel and second mounting panel were installed respectively on apron and valve body, avoid the position of first mounting panel and second mounting panel to take place the skew for the stability of connecting between apron and the valve body improves.

However, the check valve has certain defects in use, when the check valve is detached for maintenance, a tool for detaching the screw cap needs to be carried with a user, the check valve is quite inconvenient, meanwhile, the spring in the check valve can cause the elastic force to fall after being used for a long time, the check valve cannot compress the spring to improve the elastic force, when the elastic force cannot push the valve clack to close the valve port, the check valve can fail to play a check function, and therefore the check valve convenient for maintenance is provided.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide a check valve which is easy to maintain, so as to solve the problems suggested in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme:

a check valve convenient to maintain comprises a valve body, wherein one side of the lower end of the valve body is provided with an input port communicated with the interior of the valve body, the other side of the lower end of the valve body is provided with an output port communicated with the interior of the valve body, the inner side of an upper port of the valve body is provided with a rotating seat, the rotating seat is connected with a threaded sealing cover, and a rotating assembly used for rotating the threaded sealing cover is arranged on the threaded sealing cover;

the valve body is internally provided with a valve hole at a position above the input port, and the threaded sealing cover is internally provided with a check assembly matched with the valve hole.

As a further scheme of the utility model: the runner assembly rotates the position of seat fixed connection in screw thread closing cap both sides respectively including rotating the seat, two, it is connected with the rotary rod all to rotate in the seat to rotate, the position that the valve body both sides are located and rotate the seat below all is equipped with elastic buckle for fix the rotary rod.

As a still further scheme of the utility model: the non return subassembly is including the installation pipe, the position of installation pipe fixed connection in the middle of the screw thread closing cap, the inside sliding connection of installation pipe has the sliding block, fixedly connected with slip post in the middle of the terminal surface under the sliding block, the position fixedly connected with and the valve opening matched with case that the installation pipe was worn out to slip post lower extreme, the position that the inside of installation pipe lies in the sliding block top is equipped with the spring, installation pipe upper end still is equipped with the adjusting part that is used for adjusting spring force.

As a still further scheme of the utility model: the adjusting component comprises a threaded seat, the threaded seat is fixedly connected to the upper end of the installation pipe, a threaded rod is connected to the inner thread of the threaded seat, a pressing block is connected to the lower end of the threaded rod, and a handle is fixedly connected to the upper end of the threaded rod.

As a still further scheme of the utility model: and a sealing ring is arranged at the side position of the upper port of the valve hole.

As a still further scheme of the utility model: and the input port and the output port are both provided with connecting flanges.

As a still further scheme of the utility model: and anti-skid patterns are engraved on the surface of the rotating rod.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, through the arranged adjusting assembly, the spring can be compressed when the adjusting assembly is used, so that the elastic force of the spring is improved, when the elastic force of the spring is weakened due to long-time use, the pressing block can be lowered by rotating the handle to compress the spring, so that the pressure applied by the spring to the sliding block can be improved to a certain extent, and further, the valve core can work normally, so that the service life of the spring can be effectively prolonged, and the complicated process and unnecessary waste caused by spring replacement can be avoided.

2. According to the check valve, the threaded sealing cover can be detached when the check valve needs to be maintained through the rotating seat, the elastic buckle and the rotating rods, the rotating rods are pulled out of the elastic buckle during detachment, then the two rotating rods are pulled to rotate the threaded sealing cover, and further the threaded sealing cover can be detached.

Drawings

Fig. 1 is a schematic view of a check valve for easy maintenance.

Fig. 2 is a schematic view showing a structure of what is in a check valve for easy maintenance.

Fig. 3 is a schematic view showing the structure of what is in a check valve for easy maintenance.

Wherein: 1. a valve body; 2. an input port; 3. a connecting flange; 4. an output port; 5. elastic buckle; 6. rotating the rod; 7. a rotating seat; 8. a threaded seat; 9. a handle; 10. a threaded rod; 11. sealing the cover by screw threads; 12. briquetting; 13. a spring; 14. a slider; 15. installing a pipe; 16. a valve core; 17. a seal ring; 18. a valve bore; 19. a sliding post.

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.

Example 1

Referring to fig. 1-3, in an embodiment of the present invention, a check valve convenient to maintain includes a valve body 1, an input port 2 communicated with an inside of the valve body 1 is disposed on one side of a lower end of the valve body 1, an output port 4 communicated with the inside of the valve body 1 is disposed on the other side of the lower end of the valve body 1, a rotating seat 7 is disposed on an inner side of an upper port of the valve body 1, a threaded seal cover 11 is connected to the rotating seat 7, and a rotating assembly for rotating the threaded seal cover 11 is disposed on the threaded seal cover 11; a sealing ring 17 is arranged at the side position of the upper port of the valve hole 18; the ports of the input port 2 and the output port 4 are both provided with connecting flanges 3; the sealing ring 17 can improve the sealing performance of the connection between the valve core 16 and the valve hole 18.

The rotating assembly comprises rotating seats 7, the two rotating seats 7 are respectively and fixedly connected to the positions on the two sides of the threaded sealing cover 11, rotating rods 6 are respectively and rotatably connected in the rotating seats 7, and elastic buckles 5 are respectively arranged at the positions, below the rotating seats 7, on the two sides of the valve body 1 and used for fixing the rotating rods 6; through the rotation seat 7 that sets up, elastic buckle 5 and rotary rod 6, can be when needs are maintained the check valve, dismantle screw thread closing cap 11, scratch out rotary rod 6 from elastic buckle 5 when dismantling, then pull two rotary rods 6 and rotate screw thread closing cap 11, and then can dismantle screw thread closing cap 11, need not the instrument of carrying during the dismantlement, through bare-handed pull rotary rod 6 can, then the convenience is maintained the check valve and is overhauld.

A valve hole 18 is formed in the valve body 1 above the input port 2, and a check assembly matched with the valve hole 18 is arranged in the threaded sealing cover 11; the non return subassembly includes installation pipe 15, installation pipe 15 fixed connection is in the position in the middle of the screw thread closing cap 11, the inside sliding connection of installation pipe 15 has sliding block 14, fixedly connected with slip post 19 in the middle of the terminal surface under sliding block 14, the position fixedly connected with that the installation pipe 15 was worn out to slip post 19 lower extreme and valve opening 18 matched with case 16, the inside position that is located sliding block 14 top of installation pipe 15 is equipped with spring 13, installation pipe 15 upper end still is equipped with the adjusting part that is used for adjusting spring 13 elasticity.

According to the utility model, through the arrangement of the adjusting assembly, the spring 13 can be compressed when in use, so that the elasticity of the spring 13 is improved, the service life of the spring 13 can be effectively prolonged, and the complicated process and unnecessary waste caused by replacing the spring 13 are avoided.

The adjusting part comprises a threaded seat 8, the threaded seat 8 is fixedly connected to the upper end of the mounting pipe 15, a threaded rod 10 is connected to the threaded seat 8 through internal threads, a pressing block 12 is connected to the lower end of the threaded rod 10, and a handle 9 is fixedly connected to the upper end of the threaded rod 10.

When the spring 13 is weakened due to long-term use, the handle 9 can be rotated to lower the pressing block 12 to compress the spring 13, so that the pressure applied by the spring 13 to the sliding block 14 can be increased to a certain degree, and the valve core 16 can work normally.

Example 2

The difference from example 1 is: anti-skid patterns are engraved on the surfaces of the rotating rods 6; through the anti-skidding decorative pattern that sets up on the surface of rotary rod 6, the frictional force on multiplicable rotary rod 6 surface avoids appearing the phenomenon of skidding for holding rotary rod 6.

The working principle of the utility model is as follows: when the check valve is maintained, the rotating rods 6 are pulled out of the elastic buckles 5, then the two rotating rods 6 are pulled to rotate the threaded sealing cover 11, so that the threaded sealing cover 11 can be detached, the check valve is convenient to maintain, when the spring 13 is weakened due to long-time use, the pressing block 12 can be lowered to compress the spring 13 by rotating the handle 9, the pressure applied by the spring 13 to the sliding block 14 can be further improved to a certain degree, the valve core 16 can normally work, and the service life of the spring 13 can be effectively prolonged.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. Although the present description is described in terms of embodiments, not every embodiment includes only one technical solution, and such description of the embodiments is merely for clarity, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. The utility model provides a check valve convenient to maintain, includes valve body (1), valve body (1) lower extreme one side is equipped with input port (2) with the inside intercommunication of valve body (1), valve body (1) lower extreme opposite side is equipped with delivery outlet (4) with the inside intercommunication of valve body (1), its characterized in that: a rotating seat (7) is arranged on the inner side of an upper port of the valve body (1), a threaded sealing cover (11) is connected onto the rotating seat (7), and a rotating assembly used for rotating the threaded sealing cover (11) is arranged on the threaded sealing cover (11);

the valve is characterized in that a valve hole (18) is formed in the position, located above the input port (2), in the valve body (1), and a check assembly used for being matched with the valve hole (18) is arranged in the threaded sealing cover (11).

2. The check valve convenient to maintain as claimed in claim 1, wherein the rotating assembly comprises two rotating seats (7), the two rotating seats (7) are respectively and fixedly connected to positions at two sides of the threaded cover (11), a rotating rod (6) is rotatably connected in each rotating seat (7), and elastic buckles (5) are arranged at positions at two sides of the valve body (1) below the rotating seats (7) and used for fixing the rotating rod (6).

3. The check valve convenient to maintain as claimed in claim 1, wherein the check assembly comprises a mounting tube (15), the mounting tube (15) is fixedly connected to a position in the middle of the threaded cover (11), a sliding block (14) is slidably connected inside the mounting tube (15), a sliding column (19) is fixedly connected to the middle of the lower end face of the sliding block (14), a valve core (16) matched with the valve hole (18) is fixedly connected to a position where the lower end of the sliding column (19) penetrates out of the mounting tube (15), a spring (13) is arranged at a position above the sliding block (14) inside the mounting tube (15), and an adjusting assembly for adjusting the elasticity of the spring (13) is further arranged at the upper end of the mounting tube (15).

4. The check valve convenient for maintenance of claim 3, characterized in that the adjusting component comprises a threaded seat (8), the threaded seat (8) is fixedly connected at the upper end of the mounting tube (15), a threaded rod (10) is connected in the threaded seat (8), a pressing block (12) is connected at the lower end of the threaded rod (10), and a handle (9) is fixedly connected at the upper end of the threaded rod (10).

5. The maintenance-convenient check valve according to claim 1, wherein a seal ring (17) is provided at an upper port side position of the valve hole (18).

6. A non-return valve for facilitating maintenance according to claim 1, characterized in that the inlet (2) and outlet (4) ports are provided with connecting flanges (3).

7. A non-return valve for facilitating maintenance according to claim 2, characterized in that the surface of the rotating rod (6) is engraved with anti-slip pattern.