CN217177476U - Integral type sandwich valve - Google Patents
Integral type sandwich valve Download PDFInfo
- Publication number
- CN217177476U CN217177476U CN202220722246.XU CN202220722246U CN217177476U CN 217177476 U CN217177476 U CN 217177476U CN 202220722246 U CN202220722246 U CN 202220722246U CN 217177476 U CN217177476 U CN 217177476U
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- valve
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- sealing ring
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Abstract
The integral type sandwich valve comprises a valve body, floating valve core sealing rings, limiting blocks, a valve core, a nut, a base and a screw rod, wherein the valve core is positioned inside a cavity of the valve body and the base, the end surface of the valve core is matched with O-shaped rings on the end surfaces of the upper floating valve core sealing ring and the lower floating valve core sealing ring, the nut seat is welded on the valve core, the nut is positioned in a groove of the nut seat, the valve core is connected with the screw rod through the nut, a thrust ball bearing is arranged at the rear end of the screw rod and fixed inside the valve body through a bearing gland, one sealing ring groove is respectively arranged on the end surface and the side surface of each floating valve core sealing ring, and the limiting blocks are arranged at the end part of the valve core. The utility model discloses effectively avoided the hidden danger that the valve body was revealed, the valve closes the back, and case department has increased sealed reliability, has avoided having welding stress and maintenance to dismantle defects such as inconvenient.
Description
Technical Field
The utility model relates to a pipeline maintenance specialized tool technical field, concretely relates to integral sandwich valve.
Background
When the oil gas transportation pipeline is used, the pipeline is locally corroded, deformed or damaged due to self or external factors and the like, potential safety hazards of the pipeline are generated, and when hidden danger sections are maintained or replaced, the hidden danger section pipelines are blocked and cut off. The sandwich valve is a key plugging tool required by the pipeline during maintenance and operation under the state of pressure, the existing sandwich valve adopts a combined connection type structure and consists of an upper valve plate, a lower valve plate, a middle valve plate, a valve core, a lead screw and a gland, welding stress is easy to occur to each component of the sandwich valve, so that the valve body is leaked, and the existing sandwich valve is difficult to process and inconvenient to disassemble and assemble during maintenance.
SUMMERY OF THE UTILITY MODEL
The utility model provides an integral sandwich valve to welding stress, the easy inconvenient problem of dismouting when leaking, processing difficulty and maintenance that solve prior art existence.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides an integral sandwich valve, by the valve body, the floating valve core sealing ring, the stopper, the case, the screw, base and lead screw are constituteed, the case is located the cavity of valve body and base inside, the case terminal surface cooperatees with the O shape circle of two upper and lower floating valve core sealing ring terminal surfaces, the screw seat welds on the case, the screw is located the groove of screw seat, the case passes through the screw with the lead screw and is connected, the lead screw rear end sets up thrust ball bearing and passes through the bearing gland to be fixed inside the valve body, the terminal surface and the side of floating valve core sealing ring set up one sealing washer groove respectively, the case tip sets up the stopper.
The valve body and the base are machined by adopting a forged piece or a plate and are connected through the hexagon socket head cap screws, and the valve body is communicated with the cavity in the base.
The front part of the valve body is provided with a pressure balancing device which can balance the pressure in the upper side cavity and the lower side cavity of the valve body.
The sealing ring groove of the floating valve core sealing ring is a dovetail groove, and the dovetail groove can prevent the O-shaped ring from falling off in the opening or closing process of the valve.
The utility model adopts the integral valve body, and the sealing ring between the flashboards is removed; the dovetail groove is difficult to machine on the valve core, the dovetail groove is not easy to machine, the sealing ring groove on the traditional valve core is changed into the floating valve core sealing ring, the dovetail groove can prevent an O-shaped ring from falling off in the opening or closing process of the valve, the sealing effect is tighter, the leakage risk is reduced, the screw seat is welded on the valve core, the screw is placed in the screw seat, the screw and the screw are connected, the screw is fixed by the screw gland, two sealing channels in the screw gland are effectively avoided, the leakage risk in the opening or closing process is effectively avoided, and the opening and closing of the valve core are realized by rotating the screw.
The utility model discloses effectively avoided the hidden danger that the valve body was revealed, the valve closes the back, and case department has increased sealed reliability, has avoided having welding stress and maintenance to dismantle defects such as inconvenient.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural diagram of the floating valve core sealing ring of the present invention.
In the figure, a valve body 1, a floating valve core sealing ring 2, a limiting block 3, a valve core 4, a screw 5, a screw seat 6, a base 7, a screw rod 8, a bearing gland 9 and a pressure balancing device 10 are arranged.
Detailed Description
As shown in fig. 1 and 2, an integral type sandwich valve comprises a valve body 1, floating valve core sealing rings 2, limiting blocks 3, a valve core 4, a nut 5, a base 7 and a lead screw 8, wherein the valve core 4 is positioned inside a cavity of the valve body 1 and the base 7, the end faces of the valve core 4 are matched with O-shaped rings on the end faces of the upper floating valve core sealing ring 2 and the lower floating valve core sealing ring 2, the nut seat 6 is welded on the valve core 4, the nut 5 is positioned in a groove of the nut seat 6, the valve core 4 is connected with the lead screw 8 through the nut 5, the rear end of the lead screw 8 is provided with a thrust ball bearing and fixed inside the valve body 1 through a bearing gland 9, the end face and the side face of each floating valve core sealing ring 2 are respectively provided with a sealing ring groove, and the end part of the valve core 4 is provided with the limiting block 3. The valve body 1 and the base 7 are machined by adopting a forged piece or a plate and are connected through an inner hexagonal screw, and the valve body is communicated with the cavity in the base. The front part of the valve body is provided with a pressure balancing device 10, and the pressure balancing device 10 can balance the pressure in the upper side cavity and the lower side cavity of the valve body. The sealing ring groove of the floating valve core sealing ring 2 is a dovetail groove, and the dovetail groove can prevent the O-shaped ring from falling off in the opening or closing process of the valve.
The utility model adopts the integral valve body, and the sealing ring between the flashboards is removed; the dovetail groove is difficult to machine on the valve core, the dovetail groove is not easy to machine, the sealing ring groove on the traditional valve core is changed into the floating valve core sealing ring, the dovetail groove can prevent an O-shaped ring from falling off in the opening or closing process of the valve, the sealing effect is tighter, the leakage risk is reduced, the screw seat is welded on the valve core, the screw is placed in the screw seat, the screw and the screw are connected, the screw is fixed by the screw gland, two sealing channels in the screw gland are effectively avoided, the leakage risk in the opening or closing process is effectively avoided, and the opening and closing of the valve core are realized by rotating the screw.
Claims (4)
1. The utility model provides an integral type sandwich valve, characterized by comprises the valve body, the floating valve core sealing ring, the stopper, the case, the screw, base and lead screw, the case is located the cavity of valve body and base inside, the case terminal surface cooperatees with the O shape circle of two upper and lower floating valve core sealing ring terminal surfaces, the screw seat welds on the case, the screw is located the groove of screw seat, the case passes through the screw with the lead screw and is connected, the lead screw rear end sets up thrust ball bearing and passes through the bearing gland to be fixed inside the valve body, the terminal surface and the side of floating valve core sealing ring set up one sealing washer groove respectively, the case tip sets up the stopper.
2. The integral type sandwich valve according to claim 1, wherein the valve body and the base are machined by adopting a forging piece or a plate, the valve body is connected with the inner cavity of the base through a hexagon socket head cap screw, and the valve body is communicated with the inner cavity of the base.
3. An integral sandwich valve according to claim 1 wherein pressure equalisation means are provided in the front of the valve body to equalise the pressure in the upper and lower side chambers of the valve body.
4. The integral type sandwich valve according to claim 1, wherein the seal ring groove of the floating spool seal ring is a dovetail groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220722246.XU CN217177476U (en) | 2022-03-31 | 2022-03-31 | Integral type sandwich valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220722246.XU CN217177476U (en) | 2022-03-31 | 2022-03-31 | Integral type sandwich valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217177476U true CN217177476U (en) | 2022-08-12 |
Family
ID=82746182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220722246.XU Active CN217177476U (en) | 2022-03-31 | 2022-03-31 | Integral type sandwich valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217177476U (en) |
-
2022
- 2022-03-31 CN CN202220722246.XU patent/CN217177476U/en active Active
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