CN211145552U - Multilayer labyrinth high-pressure adjusting sleeve of recirculation valve of feed pump - Google Patents
Multilayer labyrinth high-pressure adjusting sleeve of recirculation valve of feed pump Download PDFInfo
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- CN211145552U CN211145552U CN201922058826.4U CN201922058826U CN211145552U CN 211145552 U CN211145552 U CN 211145552U CN 201922058826 U CN201922058826 U CN 201922058826U CN 211145552 U CN211145552 U CN 211145552U
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- sleeve
- adjustable aperture
- throttling
- throttle cover
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Abstract
A multilayer labyrinth high-pressure adjusting sleeve of a recirculation valve of a feed pump. The regulating valve of the multi-stage speed-limiting throttling element is difficult to process, complex in process and high in cost. The utility model discloses its constitution includes: first layer throttle cover (1), first layer throttle cover outside nested has second floor throttle cover (2), second floor throttle cover outside nested has third layer throttle cover (3), first layer multichannel ring channel (7) have been seted up to first layer throttle cover skin, set up a set of one-level adjustable aperture (8) in the first layer multichannel ring channel, second floor multichannel ring channel (5) have been seted up to second floor throttle cover skin, set up a set of second grade adjustable aperture (6) in the second floor multichannel ring channel, a set of tertiary adjustable aperture (4) has been seted up to the third layer throttle cover, the staggered 30 degrees of one-level adjustable aperture and second grade adjustable aperture, the staggered 30 degrees of second grade adjustable aperture and tertiary adjustable aperture. The utility model discloses be applied to water-feeding pump recirculation valve multilayer labyrinth high pressure adjusting collar.
Description
The technical field is as follows:
the utility model relates to a multilayer labyrinth high pressure adjusting sleeve of recirculation valve of feed pump.
Background art:
the existing labyrinth adjusting sleeve is easy to generate cavitation and cavitation due to the special environment, so that valve vibration and noise are caused; particularly, in a range of a small opening degree, the valve is in a small opening degree state, so that vibration and noise are most prominent, and the sealing surface is damaged in a short time. The existing multi-stage pressure reduction speed-limiting throttling device comprises: the disc type and various throttling embedded throttling small pieces have high processing difficulty, complex process and high cost; the regulating valve with the multi-stage speed-limiting throttling element is large in size and limited in use, and can only be used for liquid media, but not for gas media. The design has simple processing technology, meets the required flow and has obvious throttling effect.
The utility model has the following contents:
the utility model aims at providing a multilayer labyrinth high pressure adjusting sleeve of feed pump recirculation valve.
The above purpose is realized by the following technical scheme:
the utility model provides a multilayer labyrinth high pressure adjusting collar of feed pump recirculation valve which constitutes and includes: first layer throttle cover, the outside nested second floor throttle cover that has of first layer throttle cover, the outside nested third layer throttle cover that has of second floor throttle cover, first layer throttle cover skin seted up first layer multichannel ring channel, first layer multichannel ring channel in seted up a set of one-level adjustable aperture, second layer throttle cover skin seted up second floor multichannel ring channel, second floor multichannel ring channel in seted up a set of second level adjustable aperture, third layer throttle cover seted up a set of tertiary adjustable aperture, the one-level adjustable aperture with the staggered 30 degrees of second level adjustable aperture, the adjustable aperture of second level with the staggered 30 degrees of tertiary adjustable aperture.
The multilayer labyrinth high-pressure adjusting sleeve of the recirculation valve of the feed pump is characterized in that a cage sleeve anti-rotation pin is arranged on an annular contact surface of the first layer throttling sleeve and the second layer throttling sleeve, and a cage sleeve anti-rotation pin is arranged on an annular contact surface of the second layer throttling sleeve and the third layer throttling sleeve.
The multilayer labyrinth high-pressure adjusting sleeve of the recirculation valve of the feed pump is characterized in that a first through-flow chamber is formed by the third layer of throttling sleeve and the second layer of throttling sleeve, and a second through-flow chamber is formed by the second layer of throttling sleeve and the first layer of throttling sleeve.
The utility model has the advantages that:
1. after each layer of throttling sleeve is embedded, each layer is staggered by 30 degrees, and the structure can effectively play a throttling role.
The utility model discloses pressure after the medium finally passes through the valve is higher than saturation pressure all the time, avoids the cavitation to produce.
The utility model discloses difficult cavitation that produces, the vibrations noise is little, durable.
The utility model discloses processing technology is simple, and is with low costs, satisfies the flow demand, and the throttle is effectual.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Figure 2 is an expanded view of the part 1 of figure 1.
Fig. 3 is an expanded view of the part 2 of fig. 1.
Fig. 4 is an expanded view of the part 3 of fig. 1.
Fig. 5 is a top view of fig. 1.
Wherein: 1. the anti-rotation pin comprises a first layer of throttling sleeve, 2 a second layer of throttling sleeve, 3 a third layer of throttling sleeve, 4 a third-level adjustable small hole, 5 a second-layer multi-channel annular groove, 6 a second-level adjustable small hole, 7 a first-layer multi-channel annular groove, 8 a first-level adjustable small hole, 9 a second through-flow chamber, 10 a first through-flow chamber, 11 each layer of cage sleeve anti-rotation pin.
The specific implementation mode is as follows:
example 1:
the utility model provides a multilayer labyrinth high pressure adjusting collar of feed pump recirculation valve which constitutes and includes: first layer throttle cover 1, the outside nested second floor throttle cover 2 that has of first layer throttle cover, the outside nested third layer throttle cover 3 that has of second floor throttle cover, first layer throttle cover skin seted up first layer multichannel ring channel 7, first layer multichannel ring channel in seted up a set of one-level adjustable aperture 8, second layer throttle cover skin seted up second layer multichannel ring channel 5, second layer multichannel ring channel in seted up a set of second level adjustable aperture 6, third layer throttle cover seted up a set of tertiary adjustable aperture 4, one-level adjustable aperture with the staggered 30 degrees of second level adjustable aperture, the adjustable aperture of second level with the staggered 30 degrees of tertiary adjustable aperture.
Example 2:
according to embodiment 1, the multilayer labyrinth high-pressure adjusting sleeve of the recirculation valve of the feed pump is characterized in that a cage sleeve anti-rotation pin 11 is arranged on an annular contact surface of the first layer of throttling sleeve and the second layer of throttling sleeve, and the cage sleeve anti-rotation pin is arranged on an annular contact surface of the second layer of throttling sleeve and the third layer of throttling sleeve.
Example 3:
according to the multilayer labyrinth high-pressure adjusting sleeve of the recirculation valve of the feed water pump in the embodiment 1, the third throttling sleeve and the second throttling sleeve form a first through-flow chamber 10, and the second throttling sleeve and the first throttling sleeve form a second through-flow chamber 9. The medium generates opposite impact through the first layer of the plurality of annular grooves and the second layer of the plurality of annular grooves, and energy is consumed.
Example 4:
the number of throttling layers can be increased according to the actual pressure difference, each level of throttling bears partial pressure difference, the pressure of the medium after finally passing through the valve is always higher than the saturation pressure, and cavitation is avoided. When the throttling sleeve is used, when the throttling sleeve enters into the adjustable small hole around the throttling sleeve, the first-stage throttling is carried out, the throttling sleeve outside throttling groove enters into the first cavity around the first cavity, the medium is subjected to second-stage throttling and pressure reduction through continuous changing of direction, the second-stage throttling and pressure reduction is carried out, the second-stage adjustable small hole enters into the second-stage adjustable small hole through the second-layer multi-channel annular groove, the third-stage throttling and pressure reduction is carried out, the first-layer multi-channel annular groove outside the first-layer throttling sleeve enters into the second cavity around the second cavity, the medium is subjected to fourth-stage throttling and pressure reduction through continuous changing of. If the pressure difference is too large, the throttling series can be continuously increased.
Claims (3)
1. The utility model provides a multilayer labyrinth high pressure adjusting collar of feed pump recirculation valve which constitutes and includes: the outer part of the first layer of throttling sleeve is nested with a second layer of throttling sleeve, and the outer part of the second layer of throttling sleeve is nested with a third layer of throttling sleeve, and the throttling device is characterized in that: first layer throttle cover skin seted up first layer multichannel ring channel, first layer multichannel ring channel in seted up a set of one-level adjustable aperture, second layer throttle cover skin seted up second layer multichannel ring channel, second layer multichannel ring channel in seted up a set of second grade adjustable aperture, third layer throttle cover seted up a set of tertiary adjustable aperture, the adjustable aperture of one-level with the adjustable aperture of second grade 30 degrees that stagger, the adjustable aperture of second grade with the adjustable aperture of tertiary 30 degrees that stagger.
2. The feed pump recirculation valve multilayer labyrinth high pressure adjustment sleeve of claim 1, wherein: the annular contact surface of the first layer of throttling sleeve and the second layer of throttling sleeve is provided with a cage sleeve anti-rotation pin, and the annular contact surface of the second layer of throttling sleeve and the third layer of throttling sleeve is provided with the cage sleeve anti-rotation pin.
3. The feed pump recirculation valve multilayer labyrinth high pressure adjustment sleeve of claim 1, wherein: the third layer of throttling sleeve and the second layer of throttling sleeve form a first through-flow chamber, and the second layer of throttling sleeve and the first layer of throttling sleeve form a second through-flow chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922058826.4U CN211145552U (en) | 2019-11-26 | 2019-11-26 | Multilayer labyrinth high-pressure adjusting sleeve of recirculation valve of feed pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922058826.4U CN211145552U (en) | 2019-11-26 | 2019-11-26 | Multilayer labyrinth high-pressure adjusting sleeve of recirculation valve of feed pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211145552U true CN211145552U (en) | 2020-07-31 |
Family
ID=71771952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922058826.4U Expired - Fee Related CN211145552U (en) | 2019-11-26 | 2019-11-26 | Multilayer labyrinth high-pressure adjusting sleeve of recirculation valve of feed pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211145552U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464715A (en) * | 2021-07-20 | 2021-10-01 | 重庆科技学院 | Three-stage pressure reducing cage sleeve type throttle valve |
-
2019
- 2019-11-26 CN CN201922058826.4U patent/CN211145552U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464715A (en) * | 2021-07-20 | 2021-10-01 | 重庆科技学院 | Three-stage pressure reducing cage sleeve type throttle valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200731 Termination date: 20211126 |