CN219493164U

CN219493164U - Relief pressure valve convenient to maintenance

Info

Publication number: CN219493164U
Application number: CN202320415778.3U
Authority: CN
Inventors: 康乐; 康彤
Original assignee: Beijing Pafeinuo Precision Machinery Co ltd
Current assignee: Beijing Pafeinuo Precision Machinery Co ltd
Priority date: 2023-03-01
Filing date: 2023-03-01
Publication date: 2023-08-08
Anticipated expiration: 2033-03-01

Abstract

The application discloses relief pressure valve convenient to maintenance relates to fluid control's technical field, including the valve body, including regulating chamber and the case of sliding in the regulating chamber in the valve body, offered the maintenance hole with regulating chamber intercommunication on the valve body, the case can be taken out from the maintenance hole, is provided with the seal assembly who is used for opening and close the maintenance hole in the maintenance hole. The application has the effect that the relief pressure valve is inconvenient for the clearance maintenance of improving.

Description

Relief pressure valve convenient to maintenance

Technical Field

The application relates to the technical field of fluid control, in particular to a pressure reducing valve convenient to maintain.

Background

The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure by adjusting and automatically keeps the outlet pressure stable by depending on the energy of the medium. From the viewpoint of fluid mechanics, the pressure reducing valve is a throttling element with variable local resistance, namely, by changing the throttling area, the flow speed and the kinetic energy of fluid are changed, and different pressure losses are caused, so that the aim of reducing pressure is achieved. And then, by means of the adjustment of the control system and the adjusting system, the fluctuation of the valve back pressure is balanced with the spring force of the spring in the valve body, so that the valve back pressure is kept constant within a certain error range.

As shown in fig. 1, the internal structure of the differential pressure reducing valve is inconvenient to disassemble due to the narrow internal space of the pressure reducing valve, and is inconvenient to maintain and replace after internal parts such as blockage, rust of springs, metal fatigue failure and the like are damaged in the valve body.

Disclosure of Invention

In order to solve the problem that the pressure reducing valve is inconvenient to clean and maintain, the application provides the pressure reducing valve convenient to maintain.

The application provides a relief pressure valve convenient to maintenance adopts following technical scheme:

the utility model provides a relief pressure valve convenient to maintenance, includes the valve body, including regulating chamber and the case of sliding in the regulating chamber in the valve body, set up on the valve body with the maintenance hole of regulating chamber intercommunication, the case can follow the maintenance hole takes out, be provided with the seal assembly who is used for opening and close the maintenance hole in the maintenance hole.

By adopting the technical scheme, when the pressure reducing valve is blocked or the parts are damaged, the maintenance holes communicated with each regulating chamber can be opened respectively, the valve core is taken out through the maintenance holes, and the inside of the pressure reducing valve is repaired or the parts are replaced through the pressure reducing valve, so that the service life of the pressure reducing valve is prolonged; meanwhile, the sealing assembly is arranged at the maintenance hole, so that the pressure reducing valve can be normally used.

Optionally, be provided with spring and governing valve in the regulating chamber, spring both ends respectively with governing valve, seal assembly fixed connection, just be provided with the connecting rod that is used for connecting governing valve and seal assembly in the spring.

Through adopting above-mentioned technical scheme, set up spring and governing valve in the regulating chamber in order to realize the relief pressure effect of relief pressure valve to the interior liquid of inflow relief pressure valve, set up the connecting rod simultaneously, on the one hand play the guide effect to the compression or the tensioning of spring, make the governing valve in addition can with seal assembly fixed connection, take out the repair hole with seal assembly, can take out the governing valve together and repair.

Optionally, the seal assembly includes lid and sealing washer, the lid includes principal part and expansion portion, expansion portion with principal part coaxial and diameter is greater than principal part, principal part threaded connection to in the maintenance hole, the sealing washer sets up between expansion portion and valve body.

Through adopting above-mentioned technical scheme, lid and maintenance hole lateral wall threaded connection, and set up the sealing washer between lid and valve body, can realize taking out the lid from the maintenance downthehole on the one hand, also can be with lid and valve body stable connection, set up the sealing washer, reduced the possibility that fluid flowing in the relief pressure valve oozes from the maintenance hole under the high pressure environment.

Optionally, when the base is connected to the inside of the maintenance hole, the enlarged portion protrudes from the surface of the valve body.

Through adopting above-mentioned technical scheme, the user can realize taking out the lid through rotating the expansion portion that protrudes in the valve body surface, sets up the expansion portion and makes the lid more convenient follow the maintenance downthehole taking out.

Optionally, the maintenance hole is the shoulder hole, including recess and be used for with the through-hole of regulating the room intercommunication, this portion threaded connection to during the maintenance hole, enlarged portion hold in the recess, just the surface that this portion was kept away from to enlarged portion with the valve body surface is leveled, the sealing washer sets up in the recess and keeps away from between self open-ended inner wall and the enlarged portion.

Through adopting above-mentioned technical scheme, when this portion threaded connection of lid is to in the through-hole, the expansion portion is level with the valve body surface this moment, and the lid can not occupy too much space this moment for this application relief pressure valve is more exquisite, sets up the expansion portion simultaneously and makes the sealing washer can place between expansion portion and maintenance hole lateral wall.

Optionally, the expansion part is provided with a holding groove, and a driving component for rotating the cover body is arranged in the holding groove.

Through adopting above-mentioned technical scheme, offer the holding tank on the lid for drive assembly can accomodate wherein, reduces the space that drive assembly occupy.

Optionally, the drive assembly includes first straight-bar and second straight-bar, first straight-bar with holding tank inner wall rotates to be connected, second straight-bar one end with first straight-bar keeps away from the one end rotation connection of caping.

Through adopting above-mentioned technical scheme, when need taking out the lid from the maintenance hole, rotate first straight-bar, shift out first straight-bar and second straight-bar from the holding tank, rotate the second straight-bar, make second straight-bar and first straight-bar perpendicular, drive first straight-bar through rotating the second straight-bar and rotate to drive the lid and rotate.

Optionally, the connecting rod includes sleeve and slide bar, sleeve one end is fixed on the lid, slide bar slides and sets up in the sleeve, be provided with the locating part that restriction slide bar breaks away from the sleeve in the slip in-process on the slide bar.

Through adopting above-mentioned technical scheme for the connecting rod plays the guide effect to the spring, and the spring also can compress smoothly or tensioning, breaks away from telescopic possibility in order to reduce the slide bar through setting up the locating part, in order to realize the normal operating of connecting rod.

Optionally, the port that the lid was kept away from to the sleeve is provided with the separation blade, the locating part includes the dog of sliding in the sleeve, the dog can with the separation blade offsets.

Through adopting above-mentioned technical scheme, when the slide bar moves to the direction of keeping away from the sleeve to the slide bar probably breaks away from the sleeve, dog and separation blade looks butt, the slide bar is difficult to separate with the sleeve this moment for the connecting rod can normal operating.

Through adopting above-mentioned technical scheme, to sum up, this application includes following at least one beneficial effect:

1. the side wall of the regulating chamber is provided with a maintenance hole, and when the spring or the regulating valve or the inside of the valve body needs to be cleaned or replaced, the maintenance hole can be opened to realize cleaning and replacement of the internal components of the valve body;

2. the sealing component is arranged in the maintenance hole, so that the pressure reducing valve can be normally used in the use process, and liquid passing through the pressure reducing valve is not easy to seep out of the maintenance hole;

3. the driving assembly capable of being stored is arranged on the cover body, so that the space occupied by the driving assembly is reduced, and meanwhile, the cover body is convenient to rotate, and accordingly the cover body is opened and closed.

Drawings

FIG. 1 is a cross-sectional view of the internal structure of an arithmetic relief valve;

FIG. 2 is a cross-sectional view of the internal structure of embodiment 1 of the present application;

FIG. 3 is a schematic exploded view of a partial structure of embodiment 1 of the present application;

FIG. 4 is an expanded schematic view of the drive assembly of embodiment 1 of the present application;

FIG. 5 is a sectional view showing the internal structure of embodiment 2 of the present application;

fig. 6 is a schematic exploded view of a partial structure of embodiment 2 of the present application.

Reference numerals illustrate: 1. a valve body; 11. a conditioning chamber; 12. a maintenance hole; 121. a groove; 122. a through hole; 2. a seal assembly; 21. a cover body; 211. a base; 212. an enlarged portion; 213. a receiving groove; 22. a drive assembly; 221. a first straight rod; 222. a second straight rod; 3. a seal ring; 4. a spring; 5. a regulating valve; 6. a connecting rod; 61. a sleeve; 611. a baffle; 62. a sliding rod; 621. and a stop block.

Detailed Description

The present application is described in further detail below in conjunction with figures 2-6. The embodiment of the application discloses a relief pressure valve convenient to maintenance.

Example 1

Referring to fig. 2, a pressure reducing valve convenient to maintain comprises a valve body 1, two regulating chambers 11 are arranged in the valve body 1, a valve core is arranged in each regulating chamber 11, the valve core comprises a spring 4 and a regulating valve 5, one end of the spring 4 is fixedly connected with the regulating valve 5, and the pressure reducing valve realizes the regulation of the liquid pressure in the pressure reducing valve through the compression and the tensioning of the spring 4.

Referring to fig. 2 and 3, two maintenance holes 12 are formed in the valve body 1, the maintenance holes 12 are stepped holes, each maintenance hole 12 comprises a groove 121 and a through hole 122 for communicating with the adjusting chamber 11, and a sealing assembly 2 is disposed in each maintenance hole 12. The sealing assembly 2 comprises a cover body 21 and a sealing ring 3, the cover body 21 comprises a base 211 and an expansion part 212, the base 211 can be connected into the maintenance hole 12 in a threaded mode, the sealing ring 3 is arranged between the inner wall of the groove 121 far away from the opening of the sealing assembly and the expansion part 212, and one end of the spring 4 far away from the regulating valve 5 is fixed with the end face of the base 211. When the maintenance hole 12 is closed, the sealing ring 3 is placed in the groove 121, the base 211 of the cover body 21 is connected into the through hole 122 in a threaded mode, at the moment, the inner wall of the groove 121 and the enlarged part 212 clamp the sealing ring 3, and therefore the maintenance hole 12 is closed, and meanwhile the sealing ring 3 is arranged, the possibility that liquid in the pressure reducing valve leaks from the maintenance hole 12 can be reduced.

Referring to fig. 2 and 3, a connecting rod 6 is fixedly connected between the base 211 and the regulating valve 5, and the connecting rod 6 passes through the inside of the spring 4 to guide the compression or tension of the spring 4. The connecting rod 6 includes a sleeve 61 and a sliding rod 62, one end of the sleeve 61 is fixedly connected to the base 211, one end of the sliding rod 62 is fixedly connected to the regulating valve 5, and the sliding rod 62 slides in the sleeve 61. The limiting piece for limiting the sliding rod 62 to be separated from the sleeve 61 is fixed on the sliding rod 62, the limiting piece is specifically a stop piece 621 fixed at one end, far away from the regulating valve 5, of the sliding rod 62, a circular baffle 611 is fixed at one end, far away from the cover 21, of the sleeve 61, the opening area at the end of the sleeve 61 is reduced, the stop piece 621 on the sliding rod 62 can slide to be propped against the baffle 611, and the sliding rod 62 is difficult to slide out of the sleeve 61 when sliding along the sleeve 61 through the baffle 611 and the stop piece 621, so that the valve core is convenient to take out quickly.

Referring to fig. 3 and 4, in order to facilitate the cover 21 to be taken out from the maintenance hole 12, an accommodating groove 213 is formed in the cover 21, the accommodating groove 213 may be elongated, a driving assembly 22 is disposed in the accommodating groove 213, the driving assembly 22 includes a first straight rod 221 and a second straight rod 222, one end of the first straight rod 221 is rotationally connected with an inner wall of the accommodating groove 213, a rotation axis of the first straight rod 221 is perpendicular to a length direction of the accommodating groove 213, one end of the second straight rod 222 is rotationally connected with one end of the first straight rod 221 away from the cover 21, and a rotation axis of the second straight rod 222 is perpendicular to an axis of the first straight rod 221, preferably, the second straight rod 222 can only rotate until being perpendicular to the first straight rod 221 and cannot continue to rotate.

Referring to fig. 3 and 4, when the cover 21 needs to be taken out from the maintenance hole 12, the first straight bar 221 and the second straight bar 222 are first rotated out from the accommodating groove 213, so that the axis of the first straight bar 221 is perpendicular to the plane of the cover 21, and then the second straight bar 222 is unfolded, so that the second straight bar 222 is perpendicular to the first straight bar 221, and the second straight bar 222 is rotated to drive the first straight bar 221 to rotate, thereby driving the cover 21 to rotate, so as to achieve the purpose of taking out the cover 21. Similarly, the first straight rod 221 and the second straight rod 222 can be folded and stored in the accommodating groove 213, so that the driving assembly 22 does not occupy too much space when not in use, the volume occupied by the pressure reducing valve is reduced, and meanwhile, the damage of the driving assembly 22 is reduced.

The implementation principle of the pressure reducing valve convenient to maintain is as follows: in the daily use process of the pressure reducing valve, the cover body 21 is connected into the maintenance hole 12 in a threaded manner, the sealing ring 3 is arranged between the cover body 21 and the valve body 1, and the maintenance hole 12 is kept closed, so that liquid introduced into the pressure reducing valve is difficult to leak from the maintenance hole 12, and the normal use of the pressure reducing valve is realized. When the pressure reducing valve is blocked or the spring 4 and the regulating valve 5 are failed and repair or replacement is needed, the cover body 21 is taken out of the maintenance hole 12 by the driving assembly 22, and the pressure reducing valve and the spring 4 are taken out along with the cover body 21 in the process of taking out the cover body 21 by the connecting rod 6, so that maintenance staff can maintain the pressure reducing valve more conveniently, and the maintenance difficulty of the pressure reducing valve is reduced.

Example 2

Referring to fig. 5 and 6, the embodiment differs from the embodiment in that: the driving assembly 22 is not provided, and when the base 211 of the cover 21 is screwed into the service hole 12, the enlarged portion 212 protrudes from the surface of the valve body 1, and the seal ring 3 passes through the base 211 and is provided between the enlarged portion 212 and the surface of the valve body 1. When the maintenance hole 12 is closed, the sealing ring 3 passes through the base 211, and the base 211 is connected into the maintenance hole 12 in a threaded manner, so that the maintenance hole 12 is closed. When removing the cover 21, the operator rotates the enlarged portion 212 so that the cover 21 is removed from the maintenance hole 12.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides a relief pressure valve convenient to maintenance, includes valve body (1), including regulating chamber (11) and the case of slip in regulating chamber (11) in valve body (1), its characterized in that, offer on valve body (1) with maintenance hole (12) of regulating chamber (11) intercommunication, the case can follow maintenance hole (12) take out, be provided with in maintenance hole (12) and be used for opening and close seal assembly (2) of maintenance hole (12).

2. The pressure reducing valve convenient to maintain according to claim 1, wherein the valve core comprises a spring (4) and a regulating valve (5), two ends of the spring (4) are fixedly connected with the regulating valve (5) and the sealing assembly (2) respectively, and a connecting rod (6) used for connecting the regulating valve (5) and the sealing assembly (2) is arranged in the spring (4).

3. A pressure reducing valve for easy maintenance according to claim 2, wherein the sealing assembly (2) comprises a cover (21) and a sealing ring (3);

the cover body (21) comprises a base (211) and an expansion part (212), the expansion part (212) and the base (211) are coaxial and have a diameter larger than that of the base (211), the base (211) is connected into the maintenance hole (12) in a threaded mode, and the sealing ring (3) is arranged between the expansion part (212) and the valve body (1).

4. A pressure reducing valve according to claim 3, wherein the enlarged portion (212) protrudes from the surface of the valve body (1) when the base portion (211) is connected to the inside of the service hole (12).

5. A pressure reducing valve according to claim 3, wherein the maintenance hole (12) is a stepped hole, comprising a groove (121) and a through hole (122) for communicating with the regulating chamber (11), the enlarged portion (212) is accommodated in the groove (121) when the base portion (211) is screwed into the maintenance hole (12), and the surface of the enlarged portion (212) away from the base portion (211) is leveled with the surface of the valve body (1), and the seal ring (3) is disposed between the inner wall of the groove (121) away from the opening and the enlarged portion (212).

6. The pressure reducing valve according to claim 5, wherein the expansion portion (212) is provided with a receiving groove (213), and a driving assembly (22) for rotating the cover body (21) is disposed in the receiving groove (213).

7. The pressure reducing valve according to claim 6, wherein the driving assembly (22) comprises a first straight rod (221) and a second straight rod (222), one end of the first straight rod (221) is rotatably connected with the inner wall of the accommodating groove (213), and the other end of the first straight rod is rotatably connected with the second straight rod (222).

8. A pressure reducing valve convenient to maintain according to claim 3, characterized in that the connecting rod (6) comprises a sleeve (61) and a sliding rod (62), one end of the sleeve (61) is fixed on the cover body (21), the sliding rod (62) is slidably arranged in the sleeve (61), and a limiting piece for limiting the sliding rod (62) to be separated from the sleeve (61) in the sliding process is arranged on the sliding rod (62).

9. A pressure reducing valve according to claim 8, characterized in that the sleeve (61) is provided with a stop (611) at a port remote from the cover (21), said stop comprising a stop (621) sliding in the sleeve (61), said stop (621) being able to abut against said stop (611).