CN210637510U - Pressure reducing valve structure - Google Patents
Pressure reducing valve structure Download PDFInfo
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- CN210637510U CN210637510U CN201921330268.6U CN201921330268U CN210637510U CN 210637510 U CN210637510 U CN 210637510U CN 201921330268 U CN201921330268 U CN 201921330268U CN 210637510 U CN210637510 U CN 210637510U
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- valve
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- cage cover
- case
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Abstract
The utility model provides a pressure reducing valve structure, it reduces the atmospheric pressure difference effectively, reduces pressure under the cavitation pressure to having avoided breaking of gas pearl, having prevented that the impact force that the gas pearl broke and produced from destroying case, disk seat and having improved the life of case, disk seat, it includes valve body and valve gap, set up water inlet and delivery port on the valve body, correspond on the valve body the water inlet with be provided with the case between the delivery port, valve rod, its characterized in that are connected to the case: the valve body is provided with a multi-stage cage cover corresponding to the valve core, the multi-stage cage cover is a stepped cage cover with different diameters, the valve core is a multi-stage valve core, the multi-stage valve core is respectively matched with the multi-stage cage cover, the valve core moves in the cage cover in a guiding mode to achieve the conduction and the interception of the valve, a cage cover water outlet hole is formed in the cage cover, the valve core at the lower end of the multi-stage valve core is of a hollow structure, and the valve core of the hollow structure is circumferentially provided with a valve core water outlet hole corresponding to the water outlet hole.
Description
Technical Field
The utility model relates to a technical field that the valve industry was made, in particular to relief pressure valve structure.
Background
When rivers were through the valve, water can produce the gas pearl, and current relief pressure valve can break the gas pearl when inlet pressure and the pressure difference of giving vent to anger are great, forms the impact to disk seat and case when the gas pearl breaks to produce cavitation erosion to disk seat and case, the zero boundary pressure that can produce cavitation erosion is cavitation erosion pressure, thereby causes the damage of case and disk seat, reduces the life of case, disk seat.
Disclosure of Invention
To the technical problem, the utility model provides a relief pressure valve structure, it reduces the atmospheric pressure difference effectively, with pressure reduction to under the cavitation pressure to avoided breaking of gas pearl, prevented that the impact force that the gas pearl broke the production from destroying case, disk seat and improved the life of case, disk seat.
The technical scheme is as follows: the utility model provides a relief pressure valve structure, its includes valve body and valve gap, set up water inlet and delivery port on the valve body, correspond on the valve body the water inlet with be provided with the case between the delivery port, the valve rod is connected to the case, its characterized in that: the valve body is provided with a multi-stage cage cover corresponding to the valve core, the multi-stage cage cover is a stepped cage cover with different diameters, the valve core is a multi-stage valve core, the multi-stage valve core is respectively matched with the multi-stage cage cover, the valve core moves in the cage cover in a guiding mode to achieve the conduction and the interception of the valve, a cage cover water outlet hole is formed in the cage cover, the valve core at the lower end of the multi-stage valve core is of a hollow structure, and the valve core of the hollow structure is circumferentially provided with a valve core water outlet hole corresponding to the water outlet hole.
The valve is further characterized in that the cage comprises a two-stage cage, and the valve core comprises a two-stage valve core; a packing pad is arranged between the valve rod and the valve cover; the filler pad is made of chromium material.
The above structure is adopted in the utility model, it is provided with multistage cage to correspond the case on the valve body, multistage cage covers the echelonment cage that is the diameter inequality, the case is multistage case, multistage case respectively with multistage cage cooperation, realize the case in cage guide motion, realize switching on and damming of valve, be provided with the cage apopore in the cage, the lower extreme case of multistage case is hollow structure, hollow structure's case circumference is provided with the case apopore that corresponds with the cage, realize the decompression behind the water under high pressure water through multistage case, with pressure reduction to under the cavitation pressure, thereby avoided breaking of gas pearl, the impact force that has prevented the gas pearl and has broken the production destroys the case, the disk seat has improved the case, the life of disk seat.
Drawings
Fig. 1 is a schematic view of the structure of the pressure reducing valve of the present invention.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Referring to fig. 1, a pressure reducing valve structure comprises a valve body 1 and a valve cover 2, wherein a water inlet 3 and a water outlet 4 are arranged on the valve body 1, a valve core 5 is arranged between the water inlet 3 and the water outlet 4 on the valve body 1, the valve core 5 is connected with a valve rod 6, two stages of cages 7-1 and 7-2 are arranged on the valve body 1 corresponding to the valve core, the multistage cages 7-1 and 7-2 are stepped cages with different diameters, the valve core is a two-stage valve core 5-1 and 5-2, the two-stage valve core 5-1 and 5-2 are respectively matched with the multistage cages 7-1 and 7-2, the valve core moves in the cages in a guiding manner to realize the conduction and the interception of the valve, a cage 8 is arranged in the cages 7-1 and 7-2, a water outlet hole is arranged at the lower end of the two-stage valve core 5-1 and 5-2, a hollow valve core 5-2 of the hollow, the high-pressure water is decompressed after passing through the multi-stage valve core, and the pressure is reduced to be below the cavitation pressure, so that the breakage of the gas beads is avoided, the valve core and the valve seat are prevented from being damaged by impact force generated by the breakage of the gas beads, and the service life of the valve core and the valve seat is prolonged.
A chromium material packing pad 10 is arranged between the valve rod 6 and the valve cover 2, so that leakage of the valve is effectively prevented.
The working principle of the pressure reducing valve structure of the present invention is described below with reference to the accompanying drawings:
high-pressure liquid enters the upper end of the valve core 5 from the water inlet 3 to realize first decompression, when the valve core 5 moves, the decompressed high-pressure water enters the hollow part of the lower-level valve core 5-2 through the upper-level cage cover 7-1 and the valve core water outlet hole 8, and the high-pressure water in the hollow part enters the water outlet through the lower-level cage cover 7-2 to realize second decompression of the high-pressure water, so that the pressure of the water is reduced to be below the cavitation pressure, thereby avoiding the rupture of air bubbles, preventing the impact force generated by the rupture of the air bubbles from damaging the valve core and the valve seat, and prolonging the service life of the valve core and the.
Adopted two-stage cage cover and two-stage case in this embodiment, but also can adopt multistage cage cover and multistage case according to the size of water pressure, realized hydraulic further reduction, equally also the utility model discloses a protection scope.
The present invention and the embodiments thereof have been described above schematically, and the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto, and those skilled in the art will be suggested by the teachings thereof, and without departing from the spirit of the present invention, without creatively designing the structural mode and the embodiments similar to the technical solution, all of which shall fall within the protection scope of the present invention.
Claims (3)
1. The utility model provides a relief pressure valve structure, its includes valve body and valve gap, set up water inlet and delivery port on the valve body, correspond on the valve body the water inlet with be provided with the case between the delivery port, the valve rod is connected to the case, its characterized in that: the valve body is provided with a multi-stage cage cover corresponding to the valve core, the multi-stage cage cover is a stepped cage cover with different diameters, the valve core is a multi-stage valve core, the multi-stage valve core is respectively matched with the multi-stage cage cover, the valve core moves in the cage cover in a guiding mode to achieve the conduction and the interception of the valve, a cage cover water outlet hole is formed in the cage cover, the valve core at the lower end of the multi-stage valve core is of a hollow structure, and the valve core of the hollow structure is circumferentially provided with a valve core water outlet hole corresponding to the water outlet hole.
2. A pressure reducing valve structure according to claim 1, wherein: the cage comprises a two-stage cage, and the valve core comprises a two-stage valve core.
3. A pressure reducing valve structure according to any one of claims 1-2, wherein: a packing pad is arranged between the valve rod and the valve cover; the filler pad is made of chromium material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921330268.6U CN210637510U (en) | 2019-08-16 | 2019-08-16 | Pressure reducing valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921330268.6U CN210637510U (en) | 2019-08-16 | 2019-08-16 | Pressure reducing valve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210637510U true CN210637510U (en) | 2020-05-29 |
Family
ID=70800116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921330268.6U Active CN210637510U (en) | 2019-08-16 | 2019-08-16 | Pressure reducing valve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210637510U (en) |
-
2019
- 2019-08-16 CN CN201921330268.6U patent/CN210637510U/en active Active
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| GR01 | Patent grant |