CN210600332U - Pressure reducing valve - Google Patents
Pressure reducing valve Download PDFInfo
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- CN210600332U CN210600332U CN201921727013.3U CN201921727013U CN210600332U CN 210600332 U CN210600332 U CN 210600332U CN 201921727013 U CN201921727013 U CN 201921727013U CN 210600332 U CN210600332 U CN 210600332U
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Abstract
The utility model relates to the technical field of valves, especially, relate to a relief pressure valve. The utility model relates to a pressure reducing valve, including valve body, valve clack, valve gap, interior pole, interior disk seat, outer disk seat and pressure regulating subassembly. When the pressure of the medium on the outlet side of the pressure reducing valve rises to a certain value, the medium on the outlet side enters the pressurizing cavity through the pressurizing hole and pushes the outer valve seat to move upwards, the upper end surface of the outer valve seat and the lower end surface of the valve clack form sealing, the medium in the annular cavity is discharged through the lower discharge hole, the upward acting force of the medium on the valve clack on the outlet side is reduced, the sealing specific pressure between the sealing surface of the valve clack and the sealing surface of the inner valve seat is increased; meanwhile, a second seal is formed between the outer valve seat and the valve clack, and double sealing performance is achieved; even if medium leakage exists between the sealing surface of the inner valve seat and the sealing surface of the valve clack, the medium leakage can be discharged through the annular cavity and the lower discharge hole and cannot enter the outlet side of the pressure reducing valve.
Description
Technical Field
The utility model belongs to the technical field of the valve technique and specifically relates to a relief pressure valve is related to.
Background
The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure through regulation and leads the outlet pressure to be automatically kept stable by relying on the energy of the medium. From the viewpoint of hydrodynamics, the pressure reducing valve is a throttling element with variable local resistance, namely, the flow speed and the kinetic energy of fluid are changed by changing the throttling area to cause different pressure losses, thereby achieving the purpose of pressure reduction. Then, the fluctuation of the pressure behind the valve is balanced with the spring force by means of the regulation of the control and regulation system, so that the pressure behind the valve is kept constant within a certain error range.
When the pressure reducing valve is used, a high-pressure medium is reduced into a low-pressure medium through the pressure reducing valve and then is used by a process pipeline, when the process pipeline is suspended, the medium pressure at the outlet of the pressure reducing valve can be continuously increased, when the medium pressure is increased to a certain value, the valve clack sealing surface of the pressure reducing valve is contacted with the valve seat sealing surface, because the sealing specific pressure between the valve clack sealing surface and the valve seat sealing surface is small, the sealing performance is poor, the medium at the inlet side of the pressure reducing valve can also leak to the outlet side of the pressure reducing valve, the medium pressure at the outlet side of the pressure reducing valve can be.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned not enough, provide a relief pressure valve.
In order to achieve the above object, the technical solution of the present invention is: a pressure reducing valve comprises a valve body, a valve clack, a valve cover, an inner rod, an inner valve seat, an outer valve seat and a pressure regulating assembly. The valve body has an inlet side and an outlet side; a piston cavity is arranged at the upper part of the valve body; the valve cover is arranged on the piston cavity;
the pressure regulating assembly is positioned in the piston cavity, and a spring is connected between the pressure regulating assembly and the lower end face of the valve cover;
a backflow hole is formed between the outlet side and the piston cavity;
the inner valve seat is arranged in the middle of the valve body; the inner valve seat is provided with a lower discharge hole penetrating through the valve body, and an inner port of the lower discharge hole is positioned on the side wall of the upper part of the inner valve seat; the upper part of the outer wall of the inner valve seat is provided with a concave step;
the lower end of the inner rod is connected with the inner valve seat, and the upper end of the inner rod penetrates through the middle of the valve clack and extends upwards to be connected with the valve cover; the middle of the lower part of the inner rod is provided with a pressurizing hole, the lower end of the pressurizing hole penetrates through the side wall of the inner valve seat, and the upper part of the pressurizing hole is provided with a first side wall hole; when the valve clack moves downwards and is tightly pressed on the upper surface of the inner valve seat, the first side wall hole is communicated with the piston cavity;
the valve clack is positioned at the lower part of the piston cavity, and the lower end surface of the valve clack is matched with the inner valve seat and the outer valve seat;
a pressurizing cavity is arranged at the position of the valve body close to the outer wall of the inner valve seat; the outer valve seat is arranged in the pressurizing cavity, and a return spring is arranged between the outer valve seat and the upper wall of the pressurizing cavity; the inner side of the outer valve seat extends upwards to form an outer pressing part, and the outer pressing part is positioned on the inner side of the pressurizing cavity; the outer pressing part is provided with a pressing part inwards in the radial direction, and the inner diameter of the pressing part is smaller than the outer diameter of the concave step; when the valve clack is pressed on the inner valve seat and the outer valve seat moves upwards, the lower port of the pressurizing hole is communicated with the lower part of the pressurizing cavity, an annular cavity is formed between the outer pressing part and the inner valve seat as well as between the outer pressing part and the valve clack, and the annular cavity is communicated with the lower discharge hole; when the outer valve seat moves downwards, the inner port of the lower discharge hole is blocked by the outer pressing part and the pressing part.
Preferably, a pressure regulating mounting seat with a downward opening is arranged below the valve cover, and the height sum of the pressure regulating mounting seat and the valve clack is smaller than the distance from the lower end of the valve cover to the inner valve seat; the pressure regulating assembly is installed in the pressure regulating installation seat in a matching mode.
Preferably, a second side wall hole is formed in the upper part of the pressurizing hole; an upper discharge hole penetrating through the valve cover is formed in the upper part of the inner rod; a third side wall hole is formed in the lower part of the upper discharge hole; when the pressure regulating assembly moves downwards, the second side wall hole is communicated with the third side wall hole.
Preferably, the pressure regulating assembly comprises a plurality of regulating sleeves, and a spring is connected between each regulating sleeve and the valve cover; the adjusting sleeves are sequentially sleeved outside the inner rod from inside to outside.
Preferably, the pressure regulating assembly comprises an inner regulating sleeve, a middle regulating sleeve and an outer regulating sleeve; the inner adjusting sleeve, the middle adjusting sleeve and the outer adjusting sleeve are respectively connected below the valve cover through an inner spring, a middle spring and an outer spring.
Preferably, the axial height of the adjusting sleeve closer to the inner rod is larger.
Preferably, an outer guide sleeve is arranged in the piston cavity, the inner diameter of the outer guide sleeve is matched with the outer diameter of the valve clack, and a space exists between the outer guide sleeve and the outer valve seat; the backflow hole penetrates through the side wall of the outer guide sleeve.
Preferably, the side edge of the valve flap extends upwards to form a flange; the inner diameter of the flange is larger than the outer diameter of the pressure regulating assembly, and the outer diameter of the flange is matched with the inner diameter of the outer guide sleeve.
Preferably, an outer convex ring is arranged at the upper end part of the outer guide sleeve in a radial direction; the upper part of the piston cavity is provided with an upper step matched with the outer convex ring.
Preferably, the return spring is a belleville spring.
The use process comprises the following steps:
when the pressure reducing valve is normally used, a high-pressure medium at the inlet side of the pressure reducing valve pushes the valve clack to move upwards, the medium flows out from the outlet side of the pressure reducing valve, meanwhile, the medium at the outlet side enters the piston cavity through the backflow hole, the medium pressure in the piston cavity is consistent with the medium pressure at the outlet side of the pressure reducing valve, when the medium pressure at the outlet side is greater than a preset value (the preset value is the pressure value set in the installation pipeline of the pressure reducing valve), firstly, the medium in the piston cavity pushes the outer adjusting sleeve to move upwards, the area of the medium downward acting force in the piston cavity on the upper part of the valve clack is increased, the valve clack is increased by the downward acting force, at the moment, if the valve clack continues to move upwards, the adjusting sleeve moves; if the valve clack moves down, the distance between the sealing surface of the valve clack and the sealing surface of the inner valve seat is reduced, namely the opening height of the pressure reducing valve is reduced, the medium flowing to the outlet side of the medium at the inlet side of the pressure reducing valve is reduced, the medium pressure at the outlet side of the pressure reducing force and in the piston cavity is reduced, the valve clack is subjected to downward acting force and moves up again. During this adjustment, when the pressure of the medium on the outlet side of the pressure reducing valve reaches a predetermined value, the valve flap is subjected to forces as large as upward and downward, and the position of the valve flap is kept stable.
When the process pipeline is suspended, the medium pressure at the outlet of the pressure reducing valve can be continuously raised, and when the medium pressure exceeds a preset value and is raised to a certain value, the medium in the piston cavity pushes the inner and outer regulating sleeves to move upwards, the pressurizing hole is communicated with the piston cavity, the medium in the piston cavity enters the pressurizing cavity through the pressurizing hole, the medium in the pressurizing cavity pushes the outer valve seat to move upwards and keeps the upper end of the outer valve seat to press the lower end of the valve flap to form sealing, at the moment, the medium in the annular cavity is discharged through the lower discharge hole, the upward acting area and acting force of the medium at the outlet side of the pressure reducing valve below the valve flap are reduced, the sealing specific pressure between the sealing surface of the valve flap and the sealing surface of the inner valve seat is increased, the sealing performance is enhanced, meanwhile, a second sealing is formed between the lower end surface of the valve flap and the upper end surface of the outer, the leaked medium is discharged through the annular chamber and the lower bleed hole, and the leaked medium does not enter the outlet side of the pressure reducing valve.
Through adopting foretell technical scheme, the beneficial effects of the utility model are that: when the pressure of the medium on the outlet side of the pressure reducing valve rises to a certain value, the medium on the outlet side enters the pressurizing cavity through the pressurizing hole and pushes the outer valve seat to move upwards, the upper end surface of the outer valve seat and the lower end surface of the valve clack form sealing, the medium in the annular cavity is discharged through the lower discharge hole, the upward acting force of the medium on the valve clack on the outlet side is reduced, the sealing specific pressure between the sealing surface of the valve clack and the sealing surface of the inner valve seat is increased; meanwhile, a second seal is formed between the outer valve seat and the valve clack, and double sealing performance is achieved; even if medium leakage exists between the sealing surface of the inner valve seat and the sealing surface of the valve clack, the medium leakage can be discharged through the annular cavity and the lower discharge hole and cannot enter the outlet side of the pressure reducing valve.
Drawings
Fig. 1 is a schematic view of the closed state of the present invention;
FIG. 2 is an open state diagram of the present invention;
fig. 3 is an enlarged view of a portion a in fig. 1.
Description of the main reference numerals:
1. a valve body; 2. a valve flap; 3. an outer guide sleeve; 4. an inner adjusting sleeve; 5. a middle adjusting sleeve; 6. an outer adjusting sleeve; 7. an inner spring; 8. a middle spring; 9. an outer spring; 10. a valve cover; 11. an upper bleed hole; 12. a piston cavity; 13. an inner rod; 14. a return orifice; 15. a pressurizing hole; 16. a return spring; 17. an inner valve seat; 18. a lower bleed hole; 19. a pressurizing cavity; 20. an outer valve seat; 21. an annular cavity; 22. an inlet side; 23. an outlet side; 24. a concave step; 25. a first sidewall hole; 26. an outer compression section; 27. a pressing part; 28. a pressure regulating mounting base; 29. a second sidewall aperture; 30. a third sidewall hole; 31. a flange; 32. an outer convex ring; 33. and (6) ascending a step.
Detailed Description
The invention is further described with reference to the following figures and specific examples. The directional wording mentioned in the present invention, for example: the directional terms such as up, down, left, right, inner, outer, etc. are used only with reference to the orientation of the attached FIG. 1 of the specification. Accordingly, the directional terminology used is for the purpose of illustration only and is not intended to be limiting of the invention.
As shown in fig. 1-3, the present invention provides a pressure reducing valve, which comprises a valve body 1, a valve flap 2, a valve cover 10, an inner rod 13, an inner valve seat 17, an outer valve seat 20 and a pressure regulating assembly. The valve body 1 has an inlet side 22 and an outlet side 23; a piston cavity 12 is arranged at the upper part of the valve body 1; the valve cover 10 is mounted over the piston chamber 12.
The pressure regulating assembly is located within the piston chamber 12. The pressure regulating assembly comprises an inner regulating sleeve 4, a middle regulating sleeve 5 and an outer regulating sleeve 6 which are sequentially sleeved outside the inner rod from inside to outside; the inner adjusting sleeve 4, the middle adjusting sleeve 5 and the outer adjusting sleeve 6 are respectively connected below the valve cover 10 through an inner spring 7, a middle spring 8 and an outer spring 9. The axial height of the adjusting sleeve closer to the inner rod 13 is larger.
A backflow hole 14 is formed between the outlet side 23 and the piston cavity 12;
the inner valve seat 17 is arranged in the middle of the valve body 1; the inner valve seat 17 is provided with a lower discharge hole 18 penetrating through the valve body 1, and the inner port of the lower discharge hole 18 is positioned on the side wall of the upper part of the inner valve seat 17; the upper part of the outer wall of the inner valve seat 17 is provided with a concave step 24.
The lower end of the inner rod 13 is connected with the inner valve seat 17, and the upper end of the inner rod 13 penetrates through the middle of the valve clack 2 and extends upwards to be connected with the valve cover 10; a pressurizing hole 15 is formed in the middle of the lower portion of the inner rod 13, the lower end of the pressurizing hole 15 penetrates through the side wall of the inner valve seat 17, and a first side wall hole 25 is formed in the upper portion of the pressurizing hole 15; when the valve clack 2 moves downwards and is pressed on the inner valve seat 17, the first side wall hole 25 is communicated with the piston cavity 12;
the valve clack 2 is positioned at the lower part of the piston cavity 12, and the lower end surface of the valve clack 12 is matched with the inner valve seat 17 and the outer valve seat 20;
a pressurizing cavity 19 is arranged at the position of the valve body 1 close to the outer wall of the inner valve seat 17; the outer valve seat 20 is arranged in the pressurizing cavity 19, and the return spring 16 is arranged between the outer valve seat 20 and the upper wall of the pressurizing cavity 19; the return spring 16 is a belleville spring. The inner side of the outer valve seat 20 extends upwards to form an outer pressing part 26, and the outer pressing part 26 is positioned at the inner side of the pressurizing cavity 19; the outer pressing part 26 is provided with a pressing part 27 inwards in the radial direction, and the inner diameter of the pressing part 27 is smaller than the outer diameter of the concave step 24; when the valve clack 2 is pressed on the inner valve seat 17 and the outer valve seat 20 to move upwards, the outer valve seat 20 moves upwards, the lower port of the pressurizing hole 15 is communicated with the lower part of the pressurizing cavity 19, an annular cavity 21 is formed between the outer pressing part 26 and the inner valve seat 17 and the valve clack 2, and the annular cavity 21 is communicated with the lower discharge hole 18; when the outer valve seat 20 moves downward, the inner port of the lower bleed hole 18 is blocked by the outer pressing portion 26 and the pressing portion 27.
A pressure regulating mounting seat 28 with a downward opening is arranged below the valve cover 10, and the height between the pressure regulating mounting seat 28 and the valve clack 2 is smaller than the distance from the lower end of the valve cover 10 to the inner valve seat 17; the pressure regulating assembly is mounted in the pressure regulating mounting seat 28 in a matching manner.
A second side wall hole 29 is formed in the upper part of the pressurizing hole 15; an upper discharge hole 11 penetrating through the valve cover 10 is formed in the upper part of the inner rod 13; a third side wall hole 30 is arranged at the lower part of the upper discharge hole 11; when the pressure regulating assembly moves downwards, the second side wall hole 29 and the third side wall hole 30 are communicated.
An outer guide sleeve 3 is sleeved in the piston cavity 12, the inner diameter of the outer guide sleeve 3 is matched with the outer diameter of the valve clack 2, and a space is reserved between the outer guide sleeve 3 and the outer valve seat 20; the backflow hole 14 penetrates through the side wall of the outer guide sleeve 3.
The side edge of the valve clack 2 extends upwards to form a flange 31; the inner diameter of the flange 31 is larger than the outer diameter of the pressure regulating assembly, and the outer diameter of the flange 31 is matched with the inner diameter of the outer guide sleeve 3. An outer convex ring 32 is arranged at the upper end part of the outer guide sleeve 3 in the radial direction; the upper part of the piston chamber 12 is provided with an upper step 33 matching with the outer collar 32.
When in normal use, the high-pressure medium at the inlet side of the pressure reducing valve pushes the valve clack 2 to move upwards, the medium flows out from the outlet side of the pressure reducing valve, meanwhile, the medium on the outlet side enters the piston cavity 12 through the return hole 14, the pressure of the medium in the piston cavity 12 is consistent with the pressure of the medium on the outlet side of the pressure reducing valve, when the pressure of the medium at the outlet side is greater than a preset value (the preset value is a pressure value set in the installation pipeline of the pressure reducing valve of the utility model), firstly, the medium in the piston cavity 12 pushes the outer adjusting sleeve 6 to move upwards, the area of the downward acting force of the medium in the piston cavity 12 on the upper part of the valve clack 2 is enlarged, the downward acting force on the valve clack 2 is enlarged, at the moment, if the valve clack 2 continuously moves upwards, the adjusting sleeve 5 moves upwards in the pushing of the medium in the piston cavity 12, the area of the upper part of the valve clack 2 subjected to the downward acting force of the medium in the piston cavity 12 is continuously increased, and the area of the valve clack 2 subjected to the downward acting force is continuously increased; if the valve clack 2 moves downwards, the distance between the sealing surface of the valve clack 2 and the sealing surface of the inner valve seat 17 is reduced, namely the opening height of the pressure reducing valve is reduced, the medium flowing to the outlet side of the medium at the inlet side of the pressure reducing valve is reduced, the pressure of the medium at the outlet side of the pressure reducing force and in the piston cavity 12 is reduced, the downward acting force applied to the valve clack 2 is reduced, and the valve clack 2 moves. During this adjustment, when the pressure of the medium on the outlet side of the pressure reducing valve reaches a predetermined value, the valve flap 2 is subjected to forces as large as downward and upward, and the position of the valve flap 2 is kept stable.
When the process pipeline is suspended, the medium pressure at the outlet of the pressure reducing valve can be continuously raised, and the medium pressure exceeds a preset value (the preset value is a pressure value set in the installation pipeline of the pressure reducing valve of the utility model), when the medium pressure is raised to a certain value, the medium in the piston cavity 12 pushes the adjusting sleeve 5, the inner adjusting sleeve 4 and the outer adjusting sleeve 6 to move upwards, the pressurizing hole 15 is communicated with the piston cavity 12, the medium in the piston cavity 12 enters the pressurizing cavity 19 through the pressurizing hole 15, the medium in the pressurizing cavity 19 pushes the outer valve seat 20 to move upwards and keeps the upper end of the outer valve seat 20 to press the lower end of the valve clack 2 to form sealing, at the moment, the medium in the annular cavity 21 is discharged through the lower discharge hole 18, the upward acting area and acting force of the medium at the outlet side below the valve clack 2 are reduced, the sealing specific pressure between the sealing surface of the valve clack 2, meanwhile, a second seal is formed between the lower end face of the valve clack 2 and the upper end face of the outer valve seat 20, the sealing performance is further enhanced, and in addition, if medium leakage exists between the sealing face of the valve clack 2 and the sealing face of the inner valve seat 17, leaked medium is discharged through the annular cavity 21 and the lower discharge hole 18, and the leaked medium cannot enter the outlet side of the pressure reducing valve.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited to the above description, and all the equivalent changes and decorations made according to the claims of the present invention should still fall within the scope covered by the present invention.
Claims (10)
1. A pressure reducing valve, characterized by: the valve comprises a valve body, a valve clack, a valve cover, an inner rod, an inner valve seat, an outer valve seat and a pressure regulating assembly, wherein the valve body is provided with an inlet side and an outlet side; a piston cavity is arranged at the upper part of the valve body; the valve cover is arranged on the piston cavity;
the pressure regulating assembly is positioned in the piston cavity, and a spring is connected between the pressure regulating assembly and the lower end face of the valve cover;
a backflow hole is formed between the outlet side and the piston cavity;
the inner valve seat is arranged in the middle of the valve body; the inner valve seat is provided with a lower discharge hole penetrating through the valve body, and an inner port of the lower discharge hole is positioned on the side wall of the upper part of the inner valve seat; the upper part of the outer wall of the inner valve seat is provided with a concave step;
the lower end of the inner rod is connected with the inner valve seat, and the upper end of the inner rod penetrates through the middle of the valve clack and extends upwards to be connected with the valve cover; the middle of the lower part of the inner rod is provided with a pressurizing hole, the lower end of the pressurizing hole penetrates through the side wall of the inner valve seat, and the upper part of the pressurizing hole is provided with a first side wall hole; when the valve clack moves downwards and is tightly pressed on the upper surface of the inner valve seat, the first side wall hole is communicated with the piston cavity;
the valve clack is positioned at the lower part of the piston cavity, and the lower end surface of the valve clack is matched with the inner valve seat and the outer valve seat;
a pressurizing cavity is arranged at the position of the valve body close to the outer wall of the inner valve seat; the outer valve seat is arranged in the pressurizing cavity, and a return spring is arranged between the outer valve seat and the upper wall of the pressurizing cavity; the inner side of the outer valve seat extends upwards to form an outer pressing part, and the outer pressing part is positioned on the inner side of the pressurizing cavity; the outer pressing part is provided with a pressing part inwards in the radial direction, and the inner diameter of the pressing part is smaller than the outer diameter of the concave step; when the valve clack is pressed on the inner valve seat and the outer valve seat moves upwards, the lower port of the pressurizing hole is communicated with the lower part of the pressurizing cavity, an annular cavity is formed between the outer pressing part and the inner valve seat as well as between the outer pressing part and the valve clack, and the annular cavity is communicated with the lower discharge hole; when the outer valve seat moves downwards, the inner port of the lower discharge hole is blocked by the outer pressing part and the pressing part.
2. A pressure reducing valve according to claim 1, wherein: a pressure regulating mounting seat with a downward opening is arranged below the valve cover, and the height sum of the pressure regulating mounting seat and the valve clack is smaller than the distance from the lower end of the valve cover to the inner valve seat; the pressure regulating assembly is installed in the pressure regulating installation seat in a matching mode.
3. A pressure reducing valve according to claim 2, wherein: a second side wall hole is formed in the upper part of the pressurizing hole; an upper discharge hole penetrating through the valve cover is formed in the upper part of the inner rod; a third side wall hole is formed in the lower part of the upper discharge hole; when the pressure regulating assembly moves downwards, the second side wall hole is communicated with the third side wall hole.
4. A pressure reducing valve according to claim 1, wherein: the pressure regulating assembly comprises a plurality of regulating sleeves, and a spring is connected between each regulating sleeve and the valve cover; the adjusting sleeves are sequentially sleeved outside the inner rod from inside to outside.
5. The pressure reducing valve according to claim 4, wherein: the pressure regulating assembly comprises an inner regulating sleeve, a middle regulating sleeve and an outer regulating sleeve; the inner adjusting sleeve, the middle adjusting sleeve and the outer adjusting sleeve are respectively connected below the valve cover through an inner spring, a middle spring and an outer spring.
6. The pressure reducing valve according to claim 4, wherein: the axial height of the adjusting sleeve closer to the inner rod is larger.
7. A pressure reducing valve according to claim 1, wherein: an outer guide sleeve is arranged in the piston cavity, the inner diameter of the outer guide sleeve is matched with the outer diameter of the valve clack, and a space is reserved between the outer guide sleeve and the outer valve seat; the backflow hole penetrates through the side wall of the outer guide sleeve.
8. The pressure reducing valve according to claim 7, wherein: the side edge of the valve clack extends upwards to form a flange; the inner diameter of the flange is larger than the outer diameter of the pressure regulating assembly, and the outer diameter of the flange is matched with the inner diameter of the outer guide sleeve.
9. The pressure reducing valve according to claim 7, wherein: an outer convex ring is arranged at the upper end part of the outer guide sleeve in a radial direction; the upper part of the piston cavity is provided with an upper step matched with the outer convex ring.
10. A pressure reducing valve according to claim 1, wherein: the reset spring is a belleville spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921727013.3U CN210600332U (en) | 2019-10-15 | 2019-10-15 | Pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921727013.3U CN210600332U (en) | 2019-10-15 | 2019-10-15 | Pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210600332U true CN210600332U (en) | 2020-05-22 |
Family
ID=70697509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921727013.3U Active CN210600332U (en) | 2019-10-15 | 2019-10-15 | Pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210600332U (en) |
-
2019
- 2019-10-15 CN CN201921727013.3U patent/CN210600332U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230511 Address after: 452570 Group 3, Guolou Village, Changzhuang Township, Yuzhou City, Xuchang City, Henan Province Patentee after: Wang Xiumin Patentee after: Wang Jie Address before: No.63, Maidao North Road, Maidao village, Oubei street, Yongjia County, Wenzhou City, Zhejiang Province Patentee before: Yongjia Qida Intellectual Property Consulting Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230718 Address after: Room 809, Building 5, No. 99, Xincheng Road, Binjiang District, Hangzhou City, Zhejiang Province, 310000 Patentee after: Zhejiang Fulu Chemical Co.,Ltd. Address before: 452570 Group 3, Guolou Village, Changzhuang Township, Yuzhou City, Xuchang City, Henan Province Patentee before: Wang Xiumin Patentee before: Wang Jie |