CN213541359U - Multistage pressure reduction synchronous noise reduction regulating valve - Google Patents
Multistage pressure reduction synchronous noise reduction regulating valve Download PDFInfo
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- CN213541359U CN213541359U CN202022361057.8U CN202022361057U CN213541359U CN 213541359 U CN213541359 U CN 213541359U CN 202022361057 U CN202022361057 U CN 202022361057U CN 213541359 U CN213541359 U CN 213541359U
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Abstract
The utility model relates to a multistage pressure reduction synchronous noise reduction regulating valve, which comprises a valve body, wherein one side of the valve body is provided with an inlet, the other side of the valve body is provided with an outlet, a valve core, a multistage pressure reduction element and a noise reduction sleeve are arranged in the valve body, the valve core is arranged on the multistage pressure reduction element, the noise reduction sleeve is sleeved on the valve core, and the outer wall of the top of the noise reduction sleeve is connected with the inner wall of; the top end of the valve body is fixedly provided with a valve cover, the bottom end of the valve cover is abutted against the top end of the noise reduction sleeve, a valve rod penetrates through the valve cover, and the valve rod is downwards connected with a multistage pressure reduction element; the multistage pressure reduction element is internally provided with a flow passage hole, the outer wall of the multistage pressure reduction element is circumferentially provided with a plurality of multistage grooves, the inner wall of the valve core is provided with a plurality of pressure reduction grooves matched with the multistage grooves, and the side wall of the bottom of the noise reduction sleeve is provided with a plurality of noise reduction holes communicated with the multistage pressure reduction element. Through multistage step-down and falling the synchronous go on of making an uproar, not only solved the step-down problem of valve under the poor operating mode of high pressure, also solved the problem that the valve noise exceeds standard under the poor operating mode of high pressure simultaneously.
Description
Technical Field
The utility model relates to a governing valve specifically is a governing valve of making an uproar falls in step-down in multistage.
Background
At present, under the operating mode to high pressure difference (pressure difference is greater than 10MPa around the valve), most governing valves adopt multistage decompression structure, and the most common has cascade multistage decompression, lamination labyrinth multistage decompression, and above-mentioned structure has certain effect to the decompression, but is not obvious to the control effect of noise, and the decompression effect that often takes place is still enough, but the valve noise is too big (surpassing 85dBA), causes environmental noise pollution. And the sealing surface of the multi-stage pressure reducing valve is easy to be washed to cause internal leakage after long-time operation, and the service performance of the valve is influenced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: in order to solve the problem, the utility model provides a governing valve of making an uproar falls in step-down of multistage pressure realizes multistage pressure-down and falls the synchronous going on of making an uproar.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a multistage pressure reduction synchronous noise reduction regulating valve, which comprises a valve body, wherein one side of the valve body is provided with an inlet, the other side of the valve body is provided with an outlet, a valve core, a multistage pressure reduction element and a noise reduction sleeve are arranged in the valve body, the valve core is arranged on the multistage pressure reduction element, the noise reduction sleeve is sleeved on the valve core, and the outer wall of the top of the noise reduction sleeve is connected with the inner wall of the valve body;
the top end of the valve body is fixedly provided with a valve cover, the bottom end of the valve cover abuts against the top end of the noise reduction sleeve, a valve rod penetrates through the valve cover, the valve rod is downwards connected with the multistage pressure reduction element, the top of the valve rod is sleeved with a sealing filler, a pressure plate and a gland, the sealing filler is connected with the gland through the pressure plate, the gland is fixedly arranged at the top of the valve cover through a bolt, and the outer wall of the sealing filler and the outer wall of the pressure plate both abut against the inner wall of the valve cover;
the multistage pressure reduction element is internally provided with a flow passage hole, the outer wall of the multistage pressure reduction element is circumferentially provided with a plurality of multistage grooves, the inner wall of the valve core is provided with a plurality of pressure reduction grooves matched with the multistage grooves, and the side wall of the bottom of the noise reduction sleeve is provided with a plurality of noise reduction holes communicated with the multistage pressure reduction element.
The medium flows through the flow passage holes and the multistage grooves of the multistage pressure reduction elements and the pressure reduction grooves of the valve core to form multistage pressure reduction flow passages, and the noise reduction holes of the noise reduction sleeve are synchronously opened by the excircle of the valve core, so that the synchronous operation of pressure reduction and noise reduction is ensured.
Furthermore, a first sealing surface is arranged at the top of the multistage pressure reduction element, a second sealing surface is arranged at the bottom of the multistage pressure reduction element, the first sealing surface abuts against the inner top wall of the valve core, and the second sealing surface abuts against the bottom end of the valve core. When the valve core is closed, the first sealing surface and the second sealing surface form an upper sealing pair and a lower sealing pair, so that double sealing of the valve is guaranteed.
Furthermore, a plurality of noise reduction holes formed in the side wall of the bottom of the noise reduction sleeve are distributed in an axially continuous and radially uniformly distributed staggered manner; the flow is ensured to be continuous, so that the noise reduction effect is obvious.
The utility model has the advantages that: the utility model provides a multistage step-down synchronous noise reduction regulating valve, which not only solves the step-down problem of the valve under the high pressure difference working condition, but also solves the problem that the noise of the valve exceeds the standard under the high pressure difference working condition through the synchronous operation of multistage step-down and noise reduction; and the double sealing surfaces solve the problem of internal leakage of the valve caused by the flushing of the single sealing surface under the working condition of high pressure difference.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic medium flow diagram;
FIG. 3 is a schematic structural diagram of a multi-stage voltage dropping element;
in the figure: 1-valve body, 2-multistage pressure reduction element, 3-valve core, 4-valve rod, 5-valve cover, 6-sealing filler, 7-gland, 8-pressure plate, 9-noise reduction sleeve, 10-flow passage hole, 11-noise reduction hole, 12-multistage groove, 13-first sealing surface and 14-second sealing surface.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1-3, the utility model provides a multistage depressurization synchronous noise reduction regulating valve, which comprises a valve body 1, wherein one side of the valve body 1 is provided with an inlet, the other side thereof is provided with an outlet, and a medium flows in from the inlet and flows out from the outlet;
a valve core 3, a multi-stage pressure reduction element 2 and a noise reduction sleeve 9 are arranged in the valve body 1, the valve core 3 is arranged on the multi-stage pressure reduction element 2, the noise reduction sleeve 9 is sleeved on the valve core 3, and the outer wall of the top of the noise reduction sleeve 9 is connected with the inner wall of the valve body 1;
the top end of the valve body 1 is fixedly provided with a valve cover 5, the bottom end of the valve cover 5 abuts against the top end of the noise reduction sleeve 9, a valve rod 4 penetrates through the valve cover 5, the valve rod 4 is downwards connected with the multistage pressure reduction element 2 in a threaded manner, the top of the valve rod 4 is sleeved with a sealing packing 6, a pressure plate 8 and a gland 7, the sealing packing 6 is connected with the gland 7 through the pressure plate 8, the gland 7 is fixedly arranged at the top of the valve cover 5 through bolts, and the outer wall of the sealing packing 6 and the outer wall of the pressure plate 8 both abut against the inner wall of the valve cover 5;
the multistage pressure reduction element 2 is internally provided with a flow passage hole 10, the outer wall of the multistage pressure reduction element 2 is circumferentially provided with a plurality of multistage grooves 12, the inner wall of the valve core 3 is provided with a plurality of pressure reduction grooves matched with the multistage grooves 12, and the side wall of the bottom of the noise reduction sleeve 9 is provided with a plurality of noise reduction holes 11 communicated with the multistage pressure reduction element 2.
The medium flows through the flow passage holes 10 and the multistage grooves 12 of the multistage pressure reduction element 2 and the pressure reduction grooves of the valve core 3 to form a multistage pressure reduction flow passage, and the outer circle of the valve core 3 synchronously opens the noise reduction holes 11 of the noise reduction sleeve 9, so that the synchronous operation of pressure reduction and noise reduction is ensured.
As shown in fig. 1 to 3, a first sealing surface 13 is disposed at the top of the multistage pressure reduction element 2, a second sealing surface 14 is disposed at the bottom of the multistage pressure reduction element 2, the first sealing surface 13 abuts against the inner top wall of the valve element 3, and the second sealing surface 14 abuts against the bottom end of the valve element 3. When the valve core 3 is closed, the first sealing surface 13 and the second sealing surface 14 form an upper sealing pair and a lower sealing pair, so that double sealing of the valve is ensured.
As shown in fig. 1 and 2, a plurality of noise reduction holes 11 formed in the side wall of the bottom of the noise reduction sleeve 9 are axially, continuously, and radially, uniformly and staggeredly arranged; the flow is ensured to be continuous, so that the noise reduction effect is obvious.
The utility model provides a multistage step-down synchronous noise reduction regulating valve, which not only solves the step-down problem of the valve under the high pressure difference working condition, but also solves the problem that the noise of the valve exceeds the standard under the high pressure difference working condition through the synchronous operation of multistage step-down and noise reduction; and the double sealing surfaces solve the problem of internal leakage of the valve caused by the flushing of the single sealing surface under the working condition of high pressure difference.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (3)
1. The utility model provides a governing valve of making an uproar falls in step-down, its characterized in that: the noise reduction valve comprises a valve body (1), wherein one side of the valve body (1) is provided with an inlet, the other side of the valve body is provided with an outlet, a valve core (3), a multi-stage pressure reduction element (2) and a noise reduction sleeve (9) are arranged in the valve body (1), the valve core (3) is arranged on the multi-stage pressure reduction element (2), the noise reduction sleeve (9) is sleeved on the valve core (3), and the outer wall of the top of the noise reduction sleeve (9) is connected with the inner wall of the valve body (1);
the top end of the valve body (1) is fixedly provided with a valve cover (5), the bottom end of the valve cover (5) is abutted against the top end of the noise reduction sleeve (9), a valve rod (4) penetrates through the valve cover (5), the valve rod (4) is downwards connected with the multistage pressure reduction element (2), the top of the valve rod (4) is sleeved with a sealing filler (6), a pressing plate (8) and a pressing cover (7), the sealing filler (6) is connected with the pressing cover (7) through the pressing plate (8), the pressing cover (7) is fixedly arranged at the top of the valve cover (5) through bolts, and the outer wall of the sealing filler (6) and the outer wall of the pressing plate (8) are abutted against the inner wall of the valve cover (5);
the multistage pressure reduction component (2) is internally provided with a flow passage hole (10), the outer wall of the multistage pressure reduction component (2) is circumferentially provided with a plurality of multistage grooves (12), the inner wall of the valve core (3) is provided with a plurality of pressure reduction grooves matched with the multistage grooves (12), and the side wall of the bottom of the noise reduction sleeve (9) is provided with a plurality of noise reduction holes (11) communicated with the multistage pressure reduction component (2).
2. The multi-stage depressurization synchronous noise reduction regulating valve according to claim 1, wherein: the top of the multistage pressure reduction element (2) is provided with a first sealing surface (13), the bottom of the multistage pressure reduction element (2) is provided with a second sealing surface (14), the first sealing surface (13) abuts against the inner top wall of the valve core (3), and the second sealing surface (14) abuts against the bottom end of the valve core (3).
3. The multi-stage depressurization synchronous noise reduction regulating valve according to claim 1, wherein: the noise reduction holes (11) formed in the side wall of the bottom of the noise reduction sleeve (9) are distributed in an axially continuous and radially uniformly staggered mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022361057.8U CN213541359U (en) | 2020-10-21 | 2020-10-21 | Multistage pressure reduction synchronous noise reduction regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022361057.8U CN213541359U (en) | 2020-10-21 | 2020-10-21 | Multistage pressure reduction synchronous noise reduction regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213541359U true CN213541359U (en) | 2021-06-25 |
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ID=76499276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022361057.8U Active CN213541359U (en) | 2020-10-21 | 2020-10-21 | Multistage pressure reduction synchronous noise reduction regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213541359U (en) |
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2020
- 2020-10-21 CN CN202022361057.8U patent/CN213541359U/en active Active
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