CN209762257U - Multi-sealing compound valve - Google Patents
Multi-sealing compound valve Download PDFInfo
- Publication number
- CN209762257U CN209762257U CN201920536499.6U CN201920536499U CN209762257U CN 209762257 U CN209762257 U CN 209762257U CN 201920536499 U CN201920536499 U CN 201920536499U CN 209762257 U CN209762257 U CN 209762257U
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- valve
- seal
- valve seat
- valve core
- primary
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Abstract
A multi-seal compounding valve, comprising: the valve comprises a valve body, a hand wheel, a valve core and a valve seat, wherein a water inlet and a water outlet are arranged in an inner cavity of the valve body, the hand wheel rotates to drive the valve core to move up and down in the valve body, the valve seat is arranged in the valve body, when the valve core is tightly matched with the valve seat, the water inlet and the water outlet are in a cut-off state, when the valve core is separated from the valve seat, the water inlet and the water outlet are in a circulation state, the valve core comprises a primary sealing valve core and a secondary sealing valve core, the valve seat comprises a primary sealing valve seat and a secondary sealing valve seat, the primary sealing valve core. The multistage combined sealing structure has the advantages that the two valve cores are sealed, and the auxiliary seal 12 is adopted; the middle disc spring of the double valve core is flexibly connected. The sealing structures of the valve cores at all levels are relatively independent, but are mutually connected and mutually protected.
Description
Technical Field
The utility model relates to a combination valve especially relates to a many sealed combination valve.
Background
The traditional high-temperature high-pressure drain valve and the traditional drain valve are easy to leak, short in service life and high in maintenance cost. The sealing is turned off to traditional valve design "one-level", and the sealed face of disk seat is the processing shaping after the build-up welding carbide on the valve body, because disk seat and valve body are the integral type, and is bulky, and the quality is heavy, and difficult preheating before welding, no processing after welding, the difficult management and control of welding quality to lead to the hard alloy hardness of build-up welding not up to standard, sealed face thickness is difficult to control.
The valve core and the valve seat are throttling components, generally, the pressure behind the valve is far lower than the pressure in front of the valve, the valve can play a throttling role on a liquid medium in the opening and closing process, the liquid medium can be vaporized and subjected to flash evaporation due to the sharp reduction of the pressure behind the valve, and in the process of converting liquid phase into vapor phase, a vapor-liquid mixture can generate strong micro jet flow and impact force on the sealing surfaces of the valve core and the valve seat, and the sealing surfaces can be scoured and damaged by the strong micro jet flow and the impact force in a short time, so that the combination gap between the sealing surfaces of the valve core and the valve seat is abnormally increased, and the valve leakage is caused. In addition, if the liquid medium contains hard particle impurities and the like, the sealing surface is easy to damage when the valve core is closed, so that the valve is easy to leak.
Therefore, the rapid change of the medium pressure and the flow rate are reduced when the sealing surfaces of the valve core and the valve seat are throttled, and the key for prolonging the service life of the sealing surface of the valve is to prolong the service life of the sealing surface of the valve.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, a multi-seal composite valve is specially manufactured, and the multi-seal composite valve comprises a multi-stage seal structure and can prevent a valve core from being washed by fluid at a high speed.
In order to achieve the above object, the present invention provides the following solutions: the method comprises the following steps: the valve comprises a valve body, a hand wheel, a valve core and a valve seat, wherein a water inlet and a water outlet are arranged in an inner cavity of the valve body, the hand wheel rotates to drive the valve core to move up and down in the valve body, the valve seat is arranged in the valve body, when the valve core is tightly matched with the valve seat, the water inlet and the water outlet are in a cut-off state, when the valve core is separated from the valve seat, the water inlet and the water outlet are in a circulation state, the valve core comprises a primary sealing valve core and a secondary sealing valve core, the valve seat comprises a primary sealing valve seat and a secondary sealing valve seat, the primary sealing valve core.
Furthermore, the middle part of the primary sealing valve core is of a hollow structure, a limiting block, a disc spring combination and a valve core hanging device are arranged in the hollow structure, the limiting block, the disc spring combination and the secondary sealing valve core are all sleeved in the valve core hanging device, the disc spring combination is located between the limiting block and the secondary sealing valve core, and the secondary sealing core can move in the valve core hanging device under the elastic action of the disc spring combination.
Furthermore, the sealing surface of the secondary sealing valve core is a cambered surface.
Furthermore, a primary linear sealing structure is further arranged on the primary sealing valve core, a valve seat chamfering plane is arranged on the inner wall of the primary sealing valve seat, correspondingly, a valve core chamfering plane is arranged on the outer wall of the primary sealing valve core, and the valve seat chamfering plane is in linear contact with the valve core chamfering plane to form the primary linear sealing structure.
Furthermore, the primary sealing valve core is sleeved in the primary sealing valve seat, and the shaft holes of the primary sealing valve core and the primary sealing valve seat are tightly matched to form an auxiliary sealing structure.
Furthermore, the bottom of the primary sealing valve core is a valve core horizontal end face, correspondingly, a valve seat horizontal end face is arranged at the secondary sealing valve seat, and the valve core horizontal end face and the valve seat horizontal end face are pressed tightly to form a secondary face sealing structure.
The utility model discloses an useful part lies in:
The design ideas of a single valve rod, a single valve core and a single valve seat of the traditional valve are broken through, the design of the middle parts of the single valve rod, the double valve cores, the double sealing surfaces of the single valve seat and the two valve core seals is originally created, and a multistage combined sealing structure with auxiliary sealing is provided; the middle disc spring of the double valve core is flexibly connected. The sealing structures of the valve cores at all levels are relatively independent, but are mutually connected and mutually protected.
In the closing process of the valve rod, the secondary valve core and the auxiliary seal play a throttling role on a fluid medium firstly until the secondary valve core is tightly closed, then the primary valve core is compressed by the valve rod acting force to close the valve core disc spring downwards, and the primary valve core is prevented from being washed away by the fluid at a high speed in the closing process of the valve rod.
In the opening process of the valve rod, the first-stage valve core is firstly opened by the second-stage valve core in a tightly closed state, and then the auxiliary seal and the second-stage valve core are opened, so that the first-stage valve core is prevented from being washed by fluid at high speed in the opening process of the valve rod.
When one-level seal or second level seal receive the damage because of some reason, its another level seal still can guarantee sealed tightness, makes impaired sealed the disappearance erode and lose efficacy, the effectual safety of guaranteeing the valve and prolonged the life of valve greatly.
Drawings
Fig. 1 is a schematic structural view of the multi-sealing combination valve of the present invention.
Fig. 2 is a schematic structural diagram of a valve core and a valve seat in the multi-seal combination valve of the present invention.
Fig. 3 is a partially enlarged view of a in fig. 2.
Reference numerals: the valve comprises a valve seat sleeve 1, a primary sealing valve core 2, a secondary sealing valve core 3, a limiting block 4, a disc spring assembly 5, a valve core suspension device 6, a medium inlet hole 7, a primary sealing valve seat 8, a secondary sealing valve seat 9, a primary linear seal 10, a secondary surface seal 11, an auxiliary seal 12, a hand wheel 13 and a valve body 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to fig. 1 to 3 of the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
A multi-seal compounding valve, comprising: the valve comprises a valve body 14, a hand wheel 13, a valve core and a valve seat, wherein a water inlet and a water outlet are arranged in an inner cavity of the valve body 14, the hand wheel 13 rotates to drive the valve core to move up and down in the valve body 14, the valve seat is arranged in the valve body 14, when the valve core and the valve seat are tightly matched, a medium inlet hole 7 and a medium outlet are in a flow-off state, when the valve core is separated from the valve seat, the medium inlet hole 7 and the medium outlet are in a flow-through state, the valve core comprises a primary sealing valve core 2 and a secondary sealing valve core 3, the valve seat comprises a primary sealing valve seat 8 and a secondary sealing valve seat 9, the primary sealing valve core 2 is.
A multi-seal combination valve, the middle part of a primary seal valve core 2 is a hollow structure, a limiting block 4, a disc spring combination 5 and a valve core hanging device 6 are arranged in the hollow structure, the limiting block 4, the disc spring combination 5 and a secondary seal valve core 3 are all sleeved in the valve core hanging device 6, the disc spring combination 5 is positioned between the limiting block 4 and the secondary seal valve core 3, the secondary seal core can move in the valve core hanging device 6 under the elastic force action of the disc spring combination 5, when the valve core integrally moves downwards in the valve seat, the secondary sealing valve core 3 firstly contacts with the secondary sealing valve seat 9 to perform primary sealing, the valve core integrally moves downwards in the valve seat, the secondary sealing valve core 3 moves upwards in the valve core suspension device 6 until the primary sealing valve core 2 contacts with the primary sealing valve seat 8 to complete secondary sealing, and the limiting block 4 can avoid violent operation from damaging the valve core and the valve seat.
The sealing surface of a secondary sealing valve core 3 is a radian surface.
A primary linear sealing 10 structure is further arranged on a primary sealing valve core 2, a valve seat chamfering plane is arranged on the inner wall of a primary sealing valve seat 8, correspondingly, a valve core chamfering plane is arranged on the outer wall of the primary sealing valve core 2, and the valve seat chamfering plane is in linear contact with the valve core chamfering plane to form the primary linear sealing 10 structure. The angle of the valve core chamfer is different from that of the valve seat, an included angle is formed between the valve core chamfer and the valve seat, and the contact part of the valve core chamfer and the valve seat chamfer forms a first-level linear seal 10.
A primary sealing valve core 2 is sleeved in a primary sealing valve seat 8, and shaft holes of the primary sealing valve core and the primary sealing valve seat are tightly matched to form an auxiliary sealing 12 structure.
the multi-seal compound valve is characterized in that the bottom of a primary seal valve core 2 is a valve core horizontal end face, correspondingly, a valve seat horizontal end face is arranged at a secondary seal valve seat 9, and the valve core horizontal end face and the valve seat horizontal end face are pressed tightly to form a secondary face seal 11 structure.
It is obvious to a person skilled in the art that the invention is not limited to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention, and that the embodiments are therefore to be considered in all respects as exemplary and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (6)
1. A multi-seal compounding valve, comprising: the valve comprises a valve body, a hand wheel, a valve core and a valve seat, wherein a water inlet and a water outlet are arranged in an inner cavity of the valve body, the hand wheel rotates to drive the valve core to move up and down in the valve body, the valve seat is arranged in the valve body, when the valve core is tightly matched with the valve seat, the water inlet and the water outlet are in a cut-off state, when the valve core is separated from the valve seat, the water inlet and the water outlet are in a circulation state, the valve core comprises a primary sealing valve core and a secondary sealing valve core, the valve seat comprises a primary sealing valve seat and a secondary sealing valve seat, the primary sealing valve core.
2. The multi-seal combination valve according to claim 1, wherein the middle part of the primary seal valve element is a hollow structure, a limiting block, a disc spring combination and a valve element suspension device are arranged in the hollow structure, the limiting block, the disc spring combination and the secondary seal valve element are all sleeved in the valve element suspension device, the disc spring combination is located between the limiting block and the secondary seal valve element, and the secondary seal core can move in the valve element suspension device under the elastic force of the disc spring combination.
3. A multi-seal combination valve according to claim 2, wherein the sealing surface of the secondary seal cartridge is a cambered surface.
4. The multi-seal combination valve according to claim 1, wherein the primary seal spool is further provided with a primary linear seal structure, the inner wall of the primary seal valve seat is provided with a valve seat chamfer plane, correspondingly, the outer wall of the primary seal spool is provided with a spool chamfer plane, and the valve seat chamfer plane is in linear contact with the spool chamfer plane to form the primary linear seal structure.
5. The multi-seal combination valve of claim 1, wherein the primary seal spool is sleeved in the primary seal valve seat, and the shaft holes of the primary seal spool and the primary seal valve seat are tightly matched to form an auxiliary seal structure.
6. The multi-seal combination valve according to claim 1, wherein the bottom of the primary seal valve core is a horizontal end surface of the valve core, correspondingly, a horizontal end surface of the valve seat is arranged at the secondary seal valve seat, and the horizontal end surface of the valve core and the horizontal end surface of the valve seat are pressed to form a secondary surface seal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920536499.6U CN209762257U (en) | 2019-04-19 | 2019-04-19 | Multi-sealing compound valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920536499.6U CN209762257U (en) | 2019-04-19 | 2019-04-19 | Multi-sealing compound valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209762257U true CN209762257U (en) | 2019-12-10 |
Family
ID=68759966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920536499.6U Expired - Fee Related CN209762257U (en) | 2019-04-19 | 2019-04-19 | Multi-sealing compound valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209762257U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776822A (en) * | 2022-05-19 | 2022-07-22 | 成都汇川新能科技有限公司 | Anti-corrosion wear-resistant valve |
-
2019
- 2019-04-19 CN CN201920536499.6U patent/CN209762257U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776822A (en) * | 2022-05-19 | 2022-07-22 | 成都汇川新能科技有限公司 | Anti-corrosion wear-resistant 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: 20191210 Termination date: 20200419 |