CN204717128U - A kind of step-down noise reduction modulating valve - Google Patents
A kind of step-down noise reduction modulating valve Download PDFInfo
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- CN204717128U CN204717128U CN201520441214.2U CN201520441214U CN204717128U CN 204717128 U CN204717128 U CN 204717128U CN 201520441214 U CN201520441214 U CN 201520441214U CN 204717128 U CN204717128 U CN 204717128U
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Abstract
The utility model relates to a kind ofly can realize the step-down noise reduction modulating valve that multistage noise reduction can realize again multilevel decompression.This step-down noise reduction modulating valve includes valve body, valve seat and spool, valve seat is located in valve body, and make valve inner form upper and lower two chambers communicated, when spool does not act on valve seat, upper and lower two chambers communicate with the import and export of valve body, it is characterized in that: in bottom chamber, lower noise reduction components is installed, lower noise reduction components includes lower noise reduction cage and noise reducing plate, lower noise reduction cage one end fixedly covers the passage of valve seat, noise reducing plate covers at the lower noise reduction cage the other end, and be fixedly connected with lower noise reduction cage, described lower noise reduction cage and noise reducing plate all offer throttle orifice.Realize multistage noise reduction by the combination of multiple noise reduction cage and noise reducing plate, simultaneously also by two of spool series connection valve heads with the coordinating of two sealing surfaces of valve seat realize multilevel decompression.
Description
Technical field
The utility model relates to a kind of valve, is specifically related to a kind of modulating valve that can realize step-down noise reduction.
Background technique
Modulating valve, as the important component part in automation control system, is widely used in many fields such as chemical industry, oil.In the application, the Main Function of modulating valve is the flow, the pressure and other parameters that regulate medium.Here medium comprises the fluids such as liquid, gas, gas-liquid two-phase flow, in actual use, especially gas-liquid two-phase fluid, easily cavitation erosion or cavitation phenomenon is produced in two-phase fluid flow process, produce extremely strong impact force, cause valve internal badly damaged, and reach high noise level, generally can reach 115dBA.In order to abate the noise, some unit have developed many valves with decrease of noise functions.As name is called a kind of model utility (application number is 20131042750039) of low noise modulating valve, which disclose the modulating valve equally with decrease of noise functions, this modulating valve is actually by inner sleeve, intermediate sleeve and outer sleeve three sleeve noise reductions, if realize a noise reduction according to a sleeve, so in fact, this technological scheme only realizes three grades of noise reductions, and this modulating valve is due to the relation of sleeve mounting point, be difficult to realize step-down.
Summary of the invention
In view of the deficiency that prior art exists, the utility model innovation provides and a kind ofly can realize the modulating valve that multistage noise reduction can realize again multilevel decompression.
This step-down noise reduction modulating valve includes valve body, valve seat and spool, valve seat is located in valve body, and make valve inner form upper and lower two chambers communicated, when spool does not act on valve seat, upper and lower two chambers communicate with the import and export of valve body, it is characterized in that: in bottom chamber, lower noise reduction components is installed, lower noise reduction components includes lower noise reduction cage and noise reducing plate, lower noise reduction cage one end fixedly covers the passage of valve seat, noise reducing plate covers at the lower noise reduction cage the other end, and be fixedly connected with lower noise reduction cage, lower noise reduction cage and noise reducing plate form noise reduction cap, described lower noise reduction cage and noise reducing plate all offer throttle orifice.
Described seat bottom portion and noise reducing plate are all provided with the groove matched with lower noise reduction cage, with in the groove on noise reducing plate bottom the two ends difference inserted valve seat of described lower noise reduction cage, and are fixedly connected with noise reducing plate with seat bottom portion.
Described lower noise reduction cage is provided with two, and a lower noise reduction cage is enclosed within outside another lower noise reduction cage, leaves spacing between two lower noise reduction cages.
Described noise reducing plate is provided with two, and two noise reducing plates are fixedly connected with, and has gap between two noise reducing plates.
Described lower noise reduction cage is distributed with and arranges the throttle orifice circumferentially evenly offered more, the throttle orifice of neighbouring two rows staggers mutually.
Noise reduction components on being provided with in upper chamber, upper noise reduction components includes noise reduction cage, and the lower end of upper noise reduction cage fixedly covers the valve opening of valve seat, and upper noise reduction cage is distributed with throttle orifice.
Described upper noise reduction cage is distributed with and arranges the throttle orifice circumferentially evenly offered more, the throttle orifice of neighbouring two rows staggers mutually.
Described spool has the valve head of two series connection, has the sealing surface that two energy seal with two valve heads simultaneously mutually in the valve opening of valve seat.
According to the modulating valve that the utility model provides, multistage noise reduction is realized by the combination of multiple noise reduction cage and noise reducing plate, simultaneously also by two of spool series connection valve heads with the coordinating of two sealing surfaces of valve seat realize multilevel decompression, comparatively prior art, there is substantive distinguishing features and progress.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of valve seat part;
Fig. 3 is the plan view of noise reduction cage.
Embodiment
As shown in Figure 1, this step-down noise reduction modulating valve includes valve body 1, valve seat 2 and spool 3, valve seat 2 is located in valve body 1, and make valve body 1 inside form upper and lower two chambers communicated, when spool 3 does not act on valve seat 2, upper and lower two chambers communicate with the import and export of valve body 1, in bottom chamber, lower noise reduction components 4 is installed, as shown in Figure 2, lower noise reduction components 4 includes lower noise reduction cage 41 and noise reducing plate 42, noise reducing plate 42 is provided with groove, weld in the groove that lower noise reduction cage 41 lower end is stuck in noise reducing plate 42, also groove is provided with bottom valve seat 2, weld in the groove that lower noise reduction cage 41 upper end is stuck in bottom valve seat 2, noise reducing plate 42 is except helping noise reduction, also for fixing lower noise reduction cage 41, noise reduction cage 41 and noise reducing plate 42 is descended just to form a firm noise reduction cap like this, and the passage 20 of valve seat 2 is covered from bottom.This noise reduction cap is entered in order to allow medium, lower noise reduction cage 41 and noise reducing plate 42 all offer to arrange circumferentially equally distributed throttle orifice 43 more, and in order to not reduce the useful area between the neighbouring two cribbing discharge orifices 43 of lower noise reduction cage 41, as shown in Figure 3, the throttle orifice 43 of neighbouring two rows staggers by the utility model mutually, descend like this between the neighbouring two cribbing discharge orifices 43 of noise reduction cage and just can remain with abundant area, for resisting high pressure and the cavitation erosion of medium.In order to strengthen noise reduction, lower noise reduction cage 41 of the present utility model is provided with two, a lower noise reduction cage is enclosed within outside another lower noise reduction cage, and between two lower noise reduction cages 41, leave spacing, when medium is through the lower noise reduction cage of outer ring, most of bubble in medium is eliminated by first throttle orifice, when medium enters between two lower noise reduction cages also again through the lower noise reduction cage of inner ring, bubble remaining in medium is also eliminated, and all there is shunting action due to lower noise reduction cage 41 and the throttle orifice 43 on noise reducing plate 42, therefore when medium enters in passage 20, flow velocity is retarded, thus reduce further noise.Equally, noise reducing plate 42 also can be provided with two, and two noise reducing plates 42 are fixedly connected with, and has gap between two noise reducing plates 42, utilizes the principle of noise reduction same with lower noise reduction cage 41, reaches noise reduction further.In addition, the utility model is also provided with noise reduction components 5 in upper chamber, on this, noise reduction components 5 includes noise reduction cage 51, the lower end of upper noise reduction cage 51 fixedly covers the passage 20 of valve seat 2 by the structure same with lower noise reduction cage 41, and upper end is fixedly connected with connecting plate 52, spool 3 is just through this connecting plate 52 and produces seal action with valve seat 2, upper noise reduction cage 51 is equally also dispersed with the throttle orifice that many misarrangements are opened, and can arranges two equally.If using a noise reduction cage or a noise reducing plate as one-level noise reduction, the modulating valve so provided according to the utility model has six grades of noise reductions (two upper noise reduction cages 51, two lower noise reduction cages 41 and two noise reducing plates 42), noise reduction is remarkable, and sound construction, high pressure and the corrosion of medium can be resisted.
In addition, outer allow modulating valve of the present utility model on the basis of multistage noise reduction, there is multilevel decompression effect, spool 2 of the present utility model has the valve head 31 of two series connection, these two valve heads 31 can produce sealing with the sealing surface of two in passage 20 simultaneously, the valve head 31 of two series connection is divided into 2 sections pressure reduction △ P, i.e. △ P=△ P1+ △ P2, significantly reduce valve outlet port pressure like this, thus reduction noise, also reduce medium and damage is washed away to spool and valve seat, avoid modulating valve and occur vibrations in the process used.
The modulating valve provided according to the utility model has the technique effect of two-stage step-down six grades of noise reductions, comparatively prior art, has implementation feature and progress.
Claims (8)
1. a step-down noise reduction modulating valve, include valve body (1), valve seat (2) and spool (3), valve seat (2) is located in valve body (1), and make valve body (1) inside form upper and lower two chambers communicated, when spool (3) does not act on valve seat (2), upper and lower two chambers communicate with the import and export of valve body (1), it is characterized in that: in bottom chamber, lower noise reduction components (4) is installed, lower noise reduction components (4) includes lower noise reduction cage (41) and noise reducing plate (42), lower noise reduction cage (41) one end fixedly covers the passage (20) of valve seat (2), noise reducing plate (42) covers at lower noise reduction cage (41) the other end, and be fixedly connected with lower noise reduction cage (41), lower noise reduction cage (41) and noise reducing plate (42) form noise reduction cap, described lower noise reduction cage (41) and noise reducing plate (42) all offer throttle orifice (43).
2. step-down noise reduction modulating valve according to claim 1, it is characterized in that: described valve seat (2) bottom and noise reducing plate lid (42) are all provided with the groove matched with lower noise reduction cage (41), the bottom, two ends difference inserted valve seat (2) of described lower noise reduction cage (41) with in the groove on noise reducing plate (42), and is fixedly connected with noise reducing plate (42) with valve seat (2) bottom.
3. step-down noise reduction modulating valve according to claim 2, is characterized in that: described lower noise reduction cage (41) is provided with two, and a lower noise reduction cage is enclosed within outside another lower noise reduction cage, leaves spacing between two lower noise reduction cages.
4. step-down noise reduction modulating valve according to claim 3, it is characterized in that: described noise reducing plate (42) is provided with two, two noise reducing plates (42) are fixedly connected with, and have gap between two noise reducing plates (42).
5. step-down noise reduction modulating valve according to claim 1, is characterized in that: described lower noise reduction cage (41) is distributed with the throttle orifice (43) arranged more and circumferentially evenly offer, and the throttle orifice (43) of neighbouring two rows staggers mutually.
6. step-down noise reduction modulating valve according to claim 1, it is characterized in that: noise reduction components (5) is installed in upper chamber, upper noise reduction components (5) includes noise reduction cage (51), the lower end of upper noise reduction cage (51) fixedly covers the passage (20) of valve seat (2), and upper noise reduction cage (51) is distributed with throttle orifice.
7. step-down noise reduction modulating valve according to claim 6, is characterized in that: described upper noise reduction cage (51) is distributed with to arrange the throttle orifice circumferentially evenly offered more, and the throttle orifice of neighbouring two rows staggers mutually.
8. the step-down noise reduction modulating valve according to claim 1 or 6, is characterized in that: described spool (3) has the valve head (31) of two series connection, has the sealing surface that two energy seal with spool (31) simultaneously mutually in the passage (20) of valve seat (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520441214.2U CN204717128U (en) | 2015-06-25 | 2015-06-25 | A kind of step-down noise reduction modulating valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520441214.2U CN204717128U (en) | 2015-06-25 | 2015-06-25 | A kind of step-down noise reduction modulating valve |
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| CN204717128U true CN204717128U (en) | 2015-10-21 |
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| CN201520441214.2U Active CN204717128U (en) | 2015-06-25 | 2015-06-25 | A kind of step-down noise reduction modulating valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042176A (en) * | 2015-06-25 | 2015-11-11 | 浙江德卡控制阀仪表有限公司 | Pressure and noise reduction regulating valve |
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2015
- 2015-06-25 CN CN201520441214.2U patent/CN204717128U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042176A (en) * | 2015-06-25 | 2015-11-11 | 浙江德卡控制阀仪表有限公司 | Pressure and noise reduction regulating valve |
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