CN217422285U

CN217422285U - Anti-impact lifting check valve

Info

Publication number: CN217422285U
Application number: CN202221615354.3U
Authority: CN
Inventors: 王明华; 邹挺勇
Original assignee: Positive Ball Valve Group Co ltd
Current assignee: Positive Ball Valve Group Co ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2022-09-13
Anticipated expiration: 2032-06-24

Abstract

The utility model discloses an impact-proof lifting check valve, including valve body, valve gap and valve clack, be provided with inlet channel, drain passage and lie in the valve port that both junctions formed in the valve body, the valve gap is fixed in the valve body upper end, the valve clack is located the valve port top and is provided with first compression spring between valve clack and the valve gap, the valve clack is close to the one end of valve port and is provided with the sealing and the diameter of sealing is greater than the valve port diameter, the sealing periphery is provided with the buffering subassembly, the buffering subassembly has contraction state and expansion state in the valve clack lift process, when the buffering subassembly is in the expansion state the lower extreme of buffering subassembly is located the below of sealing, when the buffering subassembly is in the contraction state the lower extreme of buffering subassembly is parallel and level with the sealing terminal surface; the utility model discloses can reduce the impact to the sealed face of valve clack, the noise reduction prolongs the life of valve clack, guarantees the leakproofness between valve clack and the valve body simultaneously.

Description

Anti-impact lifting check valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to an impact-proof over-and-under type check valve.

Background

The lift check valve is a valve which automatically opens and closes a valve clack by medium flowing and is used for preventing medium from flowing backwards, and is also called a check valve, a one-way valve, a reverse flow valve and a back pressure valve, the check valve belongs to an automatic valve and mainly has the main functions of preventing medium from flowing backwards, preventing a pump and a driving motor from reversing and discharging container medium, the check valve can also be used for supplying pipelines for an auxiliary system with pressure possibly rising to exceed system pressure, the check valve can be mainly divided into a swing check valve (rotating according to gravity) and a lift check valve (moving along an axis), but the current lift check valve has unreasonable structural design and only adopts a simple cylindrical core body to be matched with a valve seat, so that the single matching mode is poor in sealing performance, the valve clack and the valve seat are easily caused to form a gap, and the medium flowing backwards jacks up the valve clack, the function of preventing the backflow of the medium is disabled.

Patent CN209494980U discloses a take emergent function's over-and-under type check valve, including the check valve body, valve gap and valve clack, this internal inlet channel and the liquid outlet channel of setting up of check valve, the intersection of inlet channel and liquid outlet channel forms the check valve mouth, the lower extreme of valve gap is provided with the fixed block, the upper end middle part of fixed block sets up vertical through-hole one, the lower extreme middle part of fixed block is provided with vertical through-hole two, be provided with the fall way in the vertical through-hole one, the fall way closes with the fixed block soon and is connected, be provided with the lifter in the vertical through-hole two, the top of lifter is provided with the anticreep ring, the lower extreme of lifter is connected with the upper end center of valve clack, set up the spring between fixed block and the valve clack, set up on the check valve mouth with valve clack under the terminal surface matched with notch.

The above patents have disadvantages: the valve clack resets under the effect of spring in above-mentioned structure, and valve clack and the sealed cooperation of disk seat, valve clack strike the valve body in long-term when the up-and-down motion and can cause certain damage, and secondly, the sealed effect at connection position is not enough to some extent, and the valve clack can produce great noise at closed in-process and valve body striking, makes the improvement based on this problem.

Disclosure of Invention

The utility model aims at overcoming the defects existing in the prior art and providing an anti-impact lifting check valve.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides an impact-proof lifting type check valve, includes valve body, valve gap and valve clack, be provided with inlet channel, liquid outlet channel in the valve body and be located the valve port that both intersections formed, the valve gap is fixed in the valve body upper end, the valve clack is located valve port top and is provided with compression spring between valve clack and the valve gap, the valve clack is close the one end of valve port and is provided with sealing part and the diameter of sealing part is greater than the valve port diameter, the sealing part periphery is provided with the buffering subassembly, the buffering subassembly has contraction state and expanded state at valve clack lift in-process, when the buffering subassembly is in the expanded state the lower extreme of buffering subassembly is located the below of sealing part, when the buffering subassembly is in the contraction state the lower extreme and the sealing part terminal surface parallel and level of buffering subassembly.

As a preferred technical scheme of the utility model, the diameter of sealing is less than the diameter of valve clack, the one end and the valve clack terminal surface fixed connection of buffering subassembly.

As a preferred technical scheme of the utility model, the buffering subassembly includes a plurality of groups buffering retaining rings, every group the buffering retaining ring includes a plurality of rubber columns that distribute along sealing part circumferencial direction equidistance and connects the rubber strip of adjacent rubber column lateral wall, wherein is close the buffering retaining ring and the valve clack fixed connection of valve clack one side, is separated by certain distance, every group between the adjacent buffering retaining ring fixedly connected with second compression spring between the rubber column of buffering retaining ring and the adjacent rubber column of buffering retaining ring.

As a preferred technical scheme of the utility model, the bonnet bottom is provided with the mounting disc, the lower extreme of mounting disc distributes along circumference equidistance has a plurality of fixed columns, every be provided with the spring groove in the fixed column, first compression spring's one end fixed connection is in the spring inslot, first compression spring's the other end and valve clack up end fixed connection.

As an optimal technical scheme of the utility model, form the passageway that slides that is used for supplying the valve clack motion between valve gap and the valve body, the passageway that slides is located the valve port top, the inboard width of the passageway that slides equals with the diameter of valve clack.

As an optimized technical scheme of the utility model, the valve clack upper end is seted up flutedly.

As an optimal technical scheme of the utility model, valve body top and bottom outer wall are provided with the strengthening rib.

As a preferred technical scheme of the utility model, both ends cover is equipped with the blotter about the valve body, the blotter includes that rubber sleeve and rubber sleeve intussuseption are filled with and inhale the sound sponge.

As an optimal technical scheme of the utility model, the valve clack is made for graphite material.

Compared with the prior art, the beneficial effects of the utility model are that: through the sealing at the valve clack periphery set up the buffering subassembly, be in the expansion state to the in-process that the contraction state changed (valve clack opens the process of closing promptly), the buffering subassembly is preferred to reduce the impact of valve clack closure in-process with the contact of valve body inner wall, terminal surface parallel and level under the lower terminal surface of buffering subassembly and the sealing of valve clack, valve clack and the sealed cooperation valve body runner of valve port are closed this moment, compare in traditional over-and-under check valve, it is little to have the noise, long service life, sealed effectual advantage.

Drawings

FIG. 1 is a sectional view of the present embodiment;

FIG. 2 is a schematic view of the structure of the valve flap in the present embodiment;

FIG. 3 is a schematic view of another view of the valve flap of the present embodiment;

fig. 4 is an enlarged view of a portion a of fig. 1.

Reference numerals: 1. a valve body; 2. a valve cover; 3. a valve clack; 4. a liquid inlet channel; 5. a liquid outlet channel; 6. a valve port; 7. a first compression spring; 8. a sealing part; 9. a buffer assembly; 10. a buffer retainer ring; 11. a rubber column; 12. a rubber strip; 13. a second compression spring; 14. mounting a disc; 15. fixing a column; 16. a spring slot; 17. a slipping channel; 18. a groove; 19. reinforcing ribs; 20. a cushion pad; 21. a rubber sleeve; 22. sound absorbing sponge.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand, the present invention will be further explained below with reference to the following embodiments and the accompanying drawings, but the following embodiments are only the preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in fig. 1 to 4, an anti-impact lift check valve comprises a valve body 1, a valve cover 2 and a valve flap 3, wherein a liquid inlet channel 4, a liquid outlet channel 5 and a valve port 6 formed at the intersection of the two are arranged in the valve body 1, the valve cover 2 is fixed at the upper end of the valve body 1, the valve flap 3 is positioned above the valve port 6, a first compression spring 7 is arranged between the valve flap 3 and the valve cover 2, one end of the valve flap 3 close to the valve port 6 is provided with a sealing part 8, the diameter of the sealing part 8 is larger than that of the valve port 6, a buffer assembly 9 is arranged at the periphery of the sealing part 8, the buffer assembly 9 has a contraction state and an expansion state in the lifting process of the valve flap 3, the lower end of the buffer assembly 9 is positioned below the sealing part 8 when the buffer assembly 9 is in the expansion state, the lower end of the buffer assembly 9 is flush with the end surface of the sealing part 8 when the buffer assembly 9 is in the contraction state, the valve flap 3 is made of graphite material in the embodiment, has certain elastic compensation function and good sealing effect.

Through 8 peripheries at the sealing at valve clack 3 set up buffering subassembly 9, be in the expansion state to the in-process that the contraction state changes (i.e. valve clack 3 opens the process of closing) when buffering subassembly 9, buffering subassembly 9 is preferred to reduce the impact of valve clack 3 closed in-process with 1 inner wall contact of valve body, terminal surface parallel and level under the sealing of the lower terminal surface of buffering subassembly 9 and valve clack 3, valve clack 3 and 6 sealed cooperations of valve port this moment, then 1 runner of valve body is closed, compare in traditional lift check valve, it is little to have the noise, long service life, sealed effectual advantage.

The elastic restoring force that first compression spring 7 provided in this application is greater than the elastic restoring force sum of each second compression spring 13, and under normal close condition, valve clack 3 makes sealing 8 compress tightly valve port 6 under first compression spring 7's effect promptly, and the buffer unit is in the shrink state, and the pressure that only receives when fluid gets into under the valve body valve clack 3 lower part is greater than the pressure that receives in upper portion and just can open valve clack 3, makes valve body 1 passageway circulate.

The diameter of the sealing part 8 is smaller than that of the valve clack 3, and one end of the buffer component 9 is fixedly connected with the end face of the valve clack 3 to provide an installation space for the buffer component 9.

The buffer assembly 9 comprises a plurality of groups of buffer check rings 10, each group of buffer check rings 10 comprises a plurality of rubber columns 11 which are distributed along the circumferential direction of the sealing part 8 at equal intervals and rubber strips 12 which are connected with the side walls of the adjacent rubber columns 11, wherein the buffer check rings 10 which are close to one side of the valve clack 3 are fixedly connected with the valve clack 3, a certain distance is separated between the adjacent buffer check rings 10, and a second compression spring 13 is fixedly connected between the rubber column 11 of each group of buffer check rings 10 and the rubber column 11 of the adjacent buffer check rings 10.

The bottom of the valve cover 2 is provided with a mounting disc 14, the lower end of the mounting disc 14 is provided with a plurality of fixing columns 15 along the circumferential direction at equal intervals, a spring groove 16 is formed in each fixing column 15, one end of a first compression spring 7 is fixedly connected in the spring groove 16, and the other end of the first compression spring 7 is fixedly connected with the upper end face of the valve clack 3.

A sliding channel 17 for the valve clack 3 to move is formed between the valve cover 2 and the valve body 1, the sliding channel 17 is located above the valve port 6, the width of the inner side of the sliding channel 17 is equal to the diameter of the valve clack 3, the movement path of the valve clack 3 is limited in the sliding channel 17, and the sealing effect is prevented from being influenced by deviation.

The upper end of the valve clack 3 is provided with the groove 18, the weight of the valve clack 3 is reduced, the energy consumption is saved, and after fluid enters the liquid inlet channel 4 of the valve body 1, the valve clack 3 is opened under the impact of the fluid, so that the communication of the liquid inlet channel 4, the liquid outlet channel 5 and the valve port 6 is realized.

The outer walls of the top and the bottom of the valve body 1 are provided with reinforcing ribs 19, so that the overall strength of the valve body 1 is ensured.

Both ends cover is equipped with blotter 20 about valve body 1, and blotter 20 includes that rubber sleeve 21 and rubber sleeve 21 intussuseption are filled with and inhale sound sponge 22, can not send too big noise because of colliding with or removing after the check valve installation.

The basic principle, the main features and the advantages of the present invention have been shown and described above, and it should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and only the preferred embodiments of the present invention have been described in the above embodiments and the description, and the present invention is not limited by the above embodiments, and the present invention can also have various changes and modifications, which fall within the scope of the present invention, which is defined by the appended claims and their equivalents.

Claims

1. The utility model provides an impact-proof over-and-under type check valve, includes valve body, valve gap and valve clack, be provided with inlet channel, liquid outlet channel in the valve body and be located the valve port that both junctions formed, the valve gap is fixed in the valve body upper end, the valve clack is located and is provided with first compression spring, its characterized in that between valve port top and valve clack and the valve gap: the valve comprises a valve clack, a valve port, a valve rod, a valve disc, a valve rod and a valve cover, wherein the valve rod is arranged on the valve rod, the valve rod is arranged between the valve rod and the valve rod, the valve rod is arranged on the valve rod, the valve rod is arranged in a valve rod, the valve rod is arranged on the valve rod, the valve rod is arranged between the valve rod and the valve rod, the valve rod is arranged on the valve rod, the valve rod is arranged on the valve rod, the valve rod is arranged on the valve rod, the valve rod is arranged on the valve rod, the valve rod is arranged on.

2. An impact resistant lift check valve as defined in claim 1, wherein: the diameter of the sealing part is smaller than that of the valve clack, and one end of the buffering component is fixedly connected with the end face of the valve clack.

3. An impact resistant lift check valve as defined in claim 1, wherein: the buffering subassembly includes a plurality of groups buffering retaining ring, every group buffering retaining ring includes a plurality of rubber columns that distribute along sealing part circumferencial direction equidistance and connects the rubber strip of adjacent rubber column lateral wall, wherein is close buffering retaining ring and the valve clack fixed connection of valve clack one side, is separated by certain distance between the adjacent buffering retaining ring, every group fixedly connected with second compression spring between the rubber column of buffering retaining ring and adjacent buffering retaining ring.

4. An impact resistant lift check valve as defined in claim 1, wherein: the valve comprises a valve body and a valve clack, and is characterized in that a mounting disc is arranged at the bottom of the valve bonnet, a plurality of fixing columns are distributed at the lower end of the mounting disc along the circumferential direction at equal intervals, a spring groove is formed in each fixing column, one end of a first compression spring is fixedly connected in the spring groove, and the other end of the first compression spring is fixedly connected with the upper end face of the valve clack.

5. An impact resistant lift check valve as defined in claim 1, wherein: and a sliding channel for the valve clack to move is formed between the valve cover and the valve body, the sliding channel is positioned above the valve port, and the width of the inner side of the sliding channel is equal to the diameter of the valve clack.

6. The impact resistant lift check valve of claim 1 wherein: the upper end of the valve clack is provided with a groove.

7. An impact resistant lift check valve as defined in claim 1, wherein: and reinforcing ribs are arranged on the outer walls of the top and the bottom of the valve body.

8. An impact resistant lift check valve as defined in claim 1, wherein: the valve body both ends cover is equipped with the blotter about, the blotter includes that rubber sleeve and rubber sleeve intussuseption are filled with and inhale the sound sponge.

9. An impact resistant lift check valve as defined in claim 1, wherein: the valve clack is made of graphite materials.