CN220523320U - Cavitation-preventing valve structure - Google Patents
Cavitation-preventing valve structure Download PDFInfo
- Publication number
- CN220523320U CN220523320U CN202322337998.1U CN202322337998U CN220523320U CN 220523320 U CN220523320 U CN 220523320U CN 202322337998 U CN202322337998 U CN 202322337998U CN 220523320 U CN220523320 U CN 220523320U
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- Prior art keywords
- cylindrical section
- valve
- rubber layer
- cavitation
- cavity
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- 238000007789 sealing Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims 1
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007363 regulatory process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Details Of Valves (AREA)
- Lift Valve (AREA)
Abstract
The utility model discloses a cavitation-resistant valve structure which comprises an electric control device, a valve rod, a valve body, a valve core and a valve seat, wherein the electric control device is connected with the valve rod, a cavity is formed in the valve body, an air inlet and an air outlet which are connected with two ends of the cavity are formed in the valve body, the valve rod is connected with the valve core, the valve core comprises a first cylindrical section, a first rubber layer, a second cylindrical section, a second rubber layer, a third cylindrical section, a third rubber layer, a fourth cylindrical section and a fourth rubber layer, the first cylindrical section, the first rubber layer, the second cylindrical section, the second rubber layer, the third cylindrical section, the fourth cylindrical section and the fourth rubber layer are stacked from top to bottom to form a stepped round platform structure, and stepped round platform holes matched with the stepped round platform structure are formed in the valve seat. The technical scheme is used for solving the problem of the reduction of the sealing performance of the existing valve caused by cavitation.
Description
Technical Field
The utility model belongs to the technical field of valve devices, and particularly relates to a cavitation-preventing valve structure.
Background
Cavitation is a hydraulic flow phenomenon, and is directly caused by flash evaporation and cavitation of pipeline fluid due to abrupt change of resistance. The core of the regulating valve is a throttle window formed between a movable valve clack and a stationary valve seat, and the resistance characteristic of the regulating valve can be changed by changing the position of the valve clack, so that the resistance characteristic of the whole process system is changed. At high pressure difference (Deltap >2.5 MPa), the regulating process of the regulating valve is the abrupt change process of resistance, and cavitation is very easy to generate in the process. Particularly, in the connecting position of the valve core and the valve seat, once cavitation occurs, the surface of the valve core or the valve seat is uneven, and the sealing effect is further affected.
Disclosure of Invention
Aiming at the technical problems, the utility model provides a cavitation-preventing valve structure which solves the problem of the reduction of tightness caused by cavitation of the existing valve and has a good sealing effect.
The utility model provides a cavitation-resistant valve structure, which comprises an electric control device, a valve rod, a valve body, a valve core and a valve seat, wherein the electric control device is connected with the valve rod, a cavity is formed in the valve body, an air inlet and an air outlet which are connected with two ends of the cavity are arranged on the valve body, the valve core and the valve seat are arranged up and down in the cavity, the valve seat is fixed on the inner wall of the cavity, the valve rod is connected with the valve core, the valve core is driven by the valve rod to abut against or be separated from the valve seat, the valve core comprises a first cylindrical section, a first rubber layer, a second cylindrical section, a second rubber layer, a third cylindrical section, a third rubber layer, a fourth cylindrical section and a fourth rubber layer, the outer diameter of the first cylindrical section, the second cylindrical section, the third cylindrical section and the fourth cylindrical section are gradually reduced, the outer diameter of the first rubber layer is equal to the outer diameter of the first cylindrical section, the outer diameter of the second rubber layer is equal to the outer diameter of the second cylindrical section, the outer diameter of the third rubber layer is equal to the outer diameter of the third cylindrical section, the outer diameter of the fourth rubber layer is equal to the outer diameter of the fourth cylindrical section, the first rubber layer, the second cylindrical section, the second rubber layer, the third cylindrical section, the third rubber layer, the fourth cylindrical section and the fourth rubber layer are stacked from top to bottom to form a stepped round platform structure, and stepped round platform holes matched with the stepped round platform structure are formed in the valve seat.
Further, the first cylindrical section, the second cylindrical section, the third cylindrical section and the fourth cylindrical section are all steel structures.
Further, a sealing ring is arranged between the outer wall of the valve seat and the inner wall of the cavity.
According to the cavitation-preventing valve structure provided by the utility model, the valve core is arranged into a multi-layer stepped truncated cone structure, and meanwhile, the valve seat is provided with the corresponding stepped truncated cone holes to form a longer sealing surface, so that the occurrence of cavitation can be effectively avoided; in addition, when cavitation problem appears, because the elasticity effect of first rubber layer, second rubber layer, third rubber layer and fourth rubber layer realizes multiple sealing, can effectively guarantee that the laminating degree of non-cavitation part does not receive cavitation part's influence, and then solves the problem that cavitation leads to the leakproofness decline.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a cavitation-preventing valve structure.
Detailed Description
The utility model discloses a cavitation-preventing valve structure which has a good sealing effect.
The following description of the present utility model will be made more fully hereinafter with reference to the accompanying drawings, in which it is shown, however, some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, the utility model discloses a cavitation-resistant valve structure, which comprises an electric control device 1, a valve rod 3, a valve body 17, a valve core and a valve seat 11, wherein the electric control device 1 is connected with the valve rod 3, a cavity 15 is formed in the valve body 17, an air inlet 2 and an air outlet 16 which are connected with two ends of the cavity 15 are formed in the valve body 17, the valve core and the valve seat 11 are arranged up and down in the cavity 15, the valve seat 11 is fixed on the inner wall of the cavity 15, the valve rod 3 is connected with the valve core, the valve core is driven by the valve rod 3 to be abutted against or separated from the valve seat 11, the valve core comprises a first cylindrical section 5, a first rubber layer 6, a second cylindrical section 4, a second rubber layer 7, a third cylindrical section 12, a third rubber layer 8, a fourth cylindrical section 13 and a fourth rubber layer 9, the outer diameters of the first cylindrical section 5, the second cylindrical section 4, the third cylindrical section 12 and the fourth cylindrical section 13 are gradually reduced, the outer diameters of the first cylindrical rubber layer 6 are equal to the outer diameters of the third cylindrical section 6, the outer diameters of the third cylindrical section 7, the fourth cylindrical section 4, the fourth cylindrical section 9 and the fourth cylindrical section 9 are equal to the outer diameters of the cylindrical section 6, the outer diameter of the third cylindrical section 6, the cylindrical section is equal to the outer diameter of the cylindrical section 6, and the outer diameter of the cylindrical section 8 is formed by the third cylindrical section 6 and the cylindrical section and the outer diameter of the cylindrical section 6.
The first cylindrical section 5, the second cylindrical section 4, the third cylindrical section 12 and the fourth cylindrical section 13 are all steel structures.
A sealing ring 14 is arranged between the outer wall of the valve seat 11 and the inner wall of the cavity 15.
According to the cavitation-resistant valve structure provided by the utility model, the valve core is arranged into a multi-layer stepped truncated cone structure, and meanwhile, the valve seat 11 is provided with the corresponding stepped truncated cone holes 10 to form a longer sealing surface, so that the occurrence of cavitation can be effectively avoided; in addition, when cavitation problem occurs, due to the elastic action of the first rubber layer 6, the second rubber layer 7, the third rubber layer 8 and the fourth rubber layer 9, multiple sealing is realized, the fit degree of the non-cavitation part can be effectively ensured not to be influenced by the cavitation part, and the problem of the reduced sealing caused by cavitation is solved.
The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.
Claims (3)
1. The utility model provides a cavitation-resistant valve structure, its characterized in that, includes electrically controlled device, valve rod, valve body, case and disk seat, electrically controlled device connects the valve rod, the inside cavity that is formed with of valve body, be provided with air inlet and the gas outlet of connecting the cavity both ends on the valve body, the case with the disk seat is in set up from top to bottom in the cavity, the disk seat is fixed in on the inner wall of cavity, the valve rod is connected the case, driven by the valve rod the case with disk seat looks butt or separation, the case includes first cylindrical section, first rubber layer, second cylindrical section, second rubber layer, third cylindrical section, third rubber layer, fourth cylindrical section and fourth rubber layer, first cylindrical section the external diameter of first rubber layer equals the external diameter of first cylindrical section, the external diameter of second rubber layer equals the external diameter of second cylindrical section, the external diameter of third rubber layer equals the third cylindrical section, the external diameter of third cylindrical section, the fourth cylindrical section, the third cylindrical section, the external diameter of fourth cylindrical section, the third cylindrical section, the diameter of cylinder section, the fourth cylindrical section, the diameter of cylinder layer, the third cylindrical section, the diameter of cylinder, the third cylindrical section and the diameter of the fourth cylindrical section and the diameter of the third cylindrical section.
2. The anti-cavitation valve structure of claim 1 wherein said first cylindrical section, said second cylindrical section, said third cylindrical section and said fourth cylindrical section are all steel structures.
3. A cavitation-resistant valve structure according to claim 1, wherein a sealing ring is provided between the outer wall of the valve seat and the inner wall of the chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322337998.1U CN220523320U (en) | 2023-08-30 | 2023-08-30 | Cavitation-preventing valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322337998.1U CN220523320U (en) | 2023-08-30 | 2023-08-30 | Cavitation-preventing valve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220523320U true CN220523320U (en) | 2024-02-23 |
Family
ID=89933398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322337998.1U Active CN220523320U (en) | 2023-08-30 | 2023-08-30 | Cavitation-preventing valve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220523320U (en) |
-
2023
- 2023-08-30 CN CN202322337998.1U patent/CN220523320U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |