CN216382800U - Valve rod shaft sealing structure of valve - Google Patents
Valve rod shaft sealing structure of valve Download PDFInfo
- Publication number
- CN216382800U CN216382800U CN202123102132.XU CN202123102132U CN216382800U CN 216382800 U CN216382800 U CN 216382800U CN 202123102132 U CN202123102132 U CN 202123102132U CN 216382800 U CN216382800 U CN 216382800U
- Authority
- CN
- China
- Prior art keywords
- valve rod
- rod shaft
- sealing
- extrusion block
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model belongs to the technical field of valve rod shaft sealing, in particular to a valve rod shaft sealing structure of a valve, aiming at the problem of inconvenient disassembly and assembly caused by untight sealing after abrasion when an O-shaped ring is used for packing and sealing, the utility model provides the following scheme, which comprises a bottom plate, wherein a mounting plate is fixed on the side surface of the top end of the bottom plate, a sealing mechanism positioned in an extrusion block is arranged on the side surface of a valve rod shaft, and a lubricating mechanism with the bottom end attached to the side surface of the valve rod shaft is arranged in the extrusion block; according to the utility model, the pressure plate is pushed to move downwards by the fixing bolt on the lower rotary pressure plate, the extrusion block is pushed to move downwards when the pressure plate moves downwards, so that the sealing mechanism arranged in the extrusion block is further extruded by the extrusion block, the sealing mechanism is continuously deformed, the sealing mechanism is in a special shape and can generate larger deformation, the side surface of the valve rod shaft is tightly attached again, one opening end is attached to the side surface of the valve rod shaft, and a lubricant is continuously provided for the side surface of the valve rod shaft, so that the high lubricity of the valve rod shaft for long-time use is ensured.
Description
Technical Field
The utility model relates to the technical field of valve rod shaft sealing, in particular to a valve rod shaft sealing structure of a valve.
Background
The sealing mode of a valve rod shaft and a valve body used at present is generally a soft packing sealing structure or an O-shaped or Y-shaped ring sealing structure, the sealing purpose is generally achieved by utilizing a gland or a screw to compress, and a certain lubricating medium is required to ensure the action sensitivity of the valve rod shaft when the O-shaped ring seal is used.
However, in the O-shaped ring packing sealing mode, the pressing force of the gland is not uniformly distributed along the axial direction, the shaft close to the gland is quickly abraded, and the O-shaped ring is easy to expand and deform, so that the sealing effect is affected, a new sealing ring is usually disassembled and assembled for solving, and the operation is complex.
Therefore, a valve rod shaft sealing structure is needed for solving the problem that the sealing is not tight and the dismounting is inconvenient after the O-shaped ring is abraded when the O-shaped ring is sealed by the packing.
SUMMERY OF THE UTILITY MODEL
The valve rod shaft sealing structure provided by the utility model solves the problem that the sealing is not tight and the dismounting is inconvenient after the O-shaped ring is abraded when the O-shaped ring is used for sealing.
In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a valve rod axle seal structure, includes the bottom plate, the top side of bottom plate is fixed with the mounting panel, sliding connection has the extrusion piece in the mounting panel, the top side of extrusion piece is provided with the clamp plate, threaded connection has fixing bolt on the clamp plate, clamp plate and mounting panel are fixed through fixing bolt, clamp plate, mounting panel and extrusion piece central point put and insert and be equipped with the valve rod axle, the side of valve rod axle is provided with the sealing mechanism who is located the extrusion piece, be provided with the lubricating mechanism of bottom and valve rod axle side laminating in the extrusion piece.
Preferably, the sealing mechanism comprises an inclined plane arranged in the extrusion block, an O-shaped sealing ring b and an O-shaped sealing ring a are arranged in the inclined plane from top to bottom, and a main sealing ring attached to the side face of the valve stem shaft is fixed at one end, close to the side face of the valve stem shaft, of the O-shaped sealing ring a.
Preferably, the lubricating mechanism comprises a lubricant placing cavity arranged inside the extrusion block, a vertical channel is formed in the side face of the top end of the pressing plate, the bottom end of the channel is communicated with the top end of the lubricant placing cavity, one end, far away from the channel, of the lubricant placing cavity is attached to the side face of the valve rod shaft, and a plugging bolt is connected to the inner thread of the channel.
Preferably, an annular groove is formed in the mounting plate, and the bottom end of the extrusion block is arranged in the groove.
Preferably, the lubricant placing cavity is obliquely arranged and annular.
Preferably, the fixing bolts are arranged in a plurality and distributed in an annular shape, and sealing rings are arranged at the joints of the plugging bolts and the pressing plates.
Compared with the prior art, the utility model has the beneficial effects that:
1. when the side surface of the valve rod shaft is sealed, the O-shaped sealing ring a, the O-shaped sealing ring b and the main sealing ring which are arranged in the extrusion block are deformed by the extrusion in the extrusion block and are attached to the side surface of the valve rod shaft to carry out multiple sealing, the multiple sealing improves the sealing degree, the side surface area of the main sealing ring which is attached to the valve rod shaft is the attachment of the surface and the surface, the attachment area is larger, the sealing effect is better, when the valve rod shaft slides for a long time to cause the abrasion of the sealing mechanism, the gap between the sealing mechanism and the valve rod shaft is increased, the sealing effect on the side surface of the valve rod shaft is poor, the pressing plate is pushed to move downwards by the fixing bolt on the lower rotary pressing plate, the extrusion block is pushed to move downwards when the pressing plate moves downwards, so that the sealing mechanism arranged in the inclined plane is further extruded by the extrusion block, and the O-shaped sealing ring a, the O-shaped sealing ring b and the main sealing ring continue to deform, the O-shaped sealing ring b is tightly attached to the side faces of the main sealing ring and the valve rod shaft again, so that continuous sealing of the valve rod shaft is completed, the complex operation of removing the whole sealing ring when the sealing ring is abraded is omitted, the operation is simple, and the cost is saved.
2. When the lubricating agent needs to be added, the plugging bolt is upwards screwed to remove the plugging bolt, the lubricating agent is introduced into the lubricating agent containing cavity through the channel, and the channel is plugged through the downwards screwed plugging bolt, so that the top end of the lubricating agent containing cavity is plugged.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic overall sectional structure of the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 2;
FIG. 4 is a schematic view of a partial cross-sectional configuration of the sealing mechanism and the lubrication mechanism of the present invention;
FIG. 5 is a schematic view of the extrusion block of the present invention;
fig. 6 is a schematic structural view of an O-ring a and a main seal ring according to the present invention.
In the figure: 1. a sealing mechanism; 101. an O-shaped sealing ring a; 102. an O-shaped sealing ring b; 103. a primary seal ring; 104. a bevel; 2. a lubrication mechanism; 201. plugging the bolt; 202. a lubricant placement chamber; 203. a channel; 3. a base plate; 4. pressing a plate; 5. fixing the bolt; 7. mounting a plate; 8. extruding the block; 9. a valve stem shaft; 10. and (4) a groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Referring to fig. 1-6, a valve rod shaft sealing structure of a valve comprises a bottom plate 3, wherein a mounting plate 7 is fixed on the side surface of the top end of the bottom plate 3, an extrusion block 8 is connected in the mounting plate 7 in a sliding manner, a pressing plate 4 is arranged on the side surface of the top end of the extrusion block 8, a fixing bolt 5 is connected on the pressing plate 4 in a threaded manner, the pressing plate 4 and the mounting plate 7 are fixed through the fixing bolt 5, a valve rod shaft 9 is inserted in the center positions of the pressing plate 4, the mounting plate 7 and the extrusion block 8, a sealing mechanism 1 positioned in the extrusion block 8 is arranged on the side surface of the valve rod shaft 9, and a lubricating mechanism 2 with the bottom end attached to the side surface of the valve rod shaft 9 is arranged in the extrusion block 8; when the side surface of the valve rod shaft 9 is sealed, the sealing mechanism 1 arranged in the extrusion block 8 is deformed by the extrusion in the extrusion block 8 and is attached to the side surface of the valve rod shaft 9 to seal the valve rod shaft, when the valve rod shaft 9 slides for a long time to cause the abrasion of the sealing mechanism 1, the gap between the sealing mechanism 1 and the valve rod shaft 9 is increased, the sealing effect on the side surface of the valve rod shaft 9 is poor, the pressing plate 4 is pushed to move downwards by the fixing bolt 5 on the lower rotary pressing plate 4, the extrusion block 8 is pushed to move downwards when the pressing plate 4 moves downwards, so that the sealing mechanism 1 arranged in the extrusion block 8 is further extruded by the extrusion block 8, the sealing mechanism 1 is continuously deformed, the sealing mechanism 1 can generate larger deformation and the side surface of the valve rod shaft 9 is attached tightly again, the continuous sealing of the valve rod shaft 9 is finished, the whole sealing ring is not required to be removed, the operation is simple, the cost is saved, when the side of the valve rod shaft 9 is lubricated continuously, the lubricant is added into the lubricating mechanism 2, the lubricating mechanism 2 is provided with openings at two ends, one of the openings is attached to the side of the valve rod shaft 9 to continuously provide the lubricant for the side of the valve rod shaft 9, and the high lubricity of the valve rod shaft 9 in long-term use is ensured.
The sealing mechanism 1 comprises an inclined plane 104 arranged in the extrusion block 8, an O-shaped sealing ring b102 and an O-shaped sealing ring a101 are arranged in the inclined plane 104 from top to bottom, and a main sealing ring 103 attached to the side surface of the valve rod shaft 9 is fixed at one end, close to the side surface of the valve rod shaft 9, of the O-shaped sealing ring a 101; when the side surface of the valve rod shaft 9 is sealed, the O-shaped sealing ring a101, the O-shaped sealing ring b102 and the main sealing ring 103 which are arranged in the extrusion block 8 are deformed and attached to the side surface of the valve rod shaft 9 to carry out multiple sealing, the multiple sealing improves the sealing degree, the area of the side surface of the valve rod shaft 9 attached by the main sealing ring 103 is the surface-to-surface attachment, the attachment area is larger, the sealing effect is better, when the valve rod shaft 9 slides for a long time to cause the abrasion of the sealing mechanism 1, the gap between the sealing mechanism 1 and the valve rod shaft 9 is increased, the sealing effect on the side surface of the valve rod shaft 9 is poor, the pressing plate 4 is pushed to move downwards by the fixing bolt 5 on the lower rotary pressing plate 4, the extrusion block 8 is pushed to move downwards when the pressing plate 4 moves downwards, the sealing mechanism 1 arranged in the inclined surface 104 is further extruded by the extrusion block 8, the O-shaped sealing ring a101, The O-shaped sealing ring b102 and the main sealing ring 103 continue to deform, and the O-shaped sealing ring b102, the main sealing ring 103 and the side face of the valve rod shaft 9 are tightly attached again, so that continuous sealing of the valve rod shaft 9 is completed, the complex operation of removing the whole sealing ring when the sealing ring is worn is omitted, the operation is simple, and the cost is saved.
The lubricating mechanism 2 comprises a lubricant placing cavity 202 arranged inside the extrusion block 8, a vertical channel 203 is formed in the side face of the top end of the pressing plate 4, the bottom end of the channel 203 is communicated with the top end of the lubricant placing cavity 202, one end, far away from the channel 203, of the lubricant placing cavity 202 is attached to the side face of the valve rod shaft 9, and a blocking bolt 201 is connected to the inner thread of the channel 203; when continuously lubricating the side of the valve rod shaft 9, the lubricant is added into the lubricant containing cavity 202, the lubricant containing cavity 202 is open at two ends, one open end is attached to the side of the valve rod shaft 9, the lubricant in the lubricant containing cavity 202 flows into the side of the valve rod shaft 9, the lubricant is continuously provided for the side of the valve rod shaft 9, the high lubricity of the valve rod shaft 9 used for a long time is ensured, the working stability of the valve rod shaft 9 is improved, when the lubricant needs to be added, the plugging bolt 201 is removed in an upward rotating mode, the lubricant is introduced into the lubricant containing cavity 202 through the channel 203, the channel 203 is plugged through the downward rotating plugging bolt 201, and therefore the top end of the lubricant containing cavity 202 is plugged.
An annular groove 10 is formed in the mounting plate 7, and the bottom end of the extrusion block 8 is arranged in the groove 10; in specific operation, when the pressing plate 4 moves downwards, the extrusion block 8 is pushed by the pressing plate 4 to move downwards, the bottom end of the extrusion block 8 slides into the groove 10, and further extrusion of the O-shaped sealing ring b102 and the O-shaped sealing ring a101 by the downward movement of the extrusion block 8 is achieved.
The lubricant placing cavity 202 is obliquely arranged and annular; in particular, during operation, the lubricant in the annular lubricant accommodating chamber 202 is distributed annularly, so that the side surface of the valve rod shaft 9 is lubricated comprehensively.
The working principle is as follows: when the side surface of the valve rod shaft 9 is sealed, the O-shaped sealing ring a101, the O-shaped sealing ring b102 and the main sealing ring 103 which are arranged in the extrusion block 8 are extruded by the extrusion block 8 to generate deformation and are attached to the side surface of the valve rod shaft 9 to carry out multiple sealing, the multiple sealing improves the sealing degree, the area of the main sealing ring 103 which is attached to the side surface of the valve rod shaft 9 is the surface-to-surface attachment, the attachment area is larger, the sealing effect is better, when the valve rod shaft 9 slides for a long time to cause the abrasion of the sealing mechanism 1, the gap between the sealing mechanism 1 and the valve rod shaft 9 is increased, the sealing effect on the side surface of the valve rod shaft 9 is poor, the pressing plate 4 is pushed to move downwards by the fixing bolt 5 on the lower rotary pressing plate 4, the extrusion block 8 is pushed to move downwards when the pressing plate 4 moves downwards, so that the sealing mechanism 1 which is arranged in the inclined plane 104 is further extruded by the extrusion block 8, and the O-shaped sealing ring a101, the O-shaped sealing ring b102 and the main sealing ring 103 continue to generate deformation, the O-shaped sealing ring b102, the main sealing ring 103 and the side surface of the valve rod shaft 9 are tightly attached again, so that the continuous sealing of the valve rod shaft 9 is completed, the tedious operation of removing the whole sealing ring when the sealing ring is worn is omitted, the operation is simple, the cost is saved, when the side surface of the valve rod shaft 9 is continuously lubricated, the lubricant is added into the lubricant containing cavity 202, the lubricant containing cavity 202 is provided with openings at two ends, one opening end is attached to the side surface of the valve rod shaft 9, the lubricant in the lubricant containing cavity 202 flows into the side surface of the valve rod shaft 9, the lubricant is continuously provided for the side surface of the valve rod shaft 9, the high lubricity of the long-time use of the valve rod shaft 9 is ensured, the working stability of the valve rod shaft 9 is improved, when the lubricant needs to be added, the plugging bolt 201 is removed by upward rotation, the lubricant is introduced into the lubricant containing cavity 202 through the channel 203, and the channel 203 is plugged by the downward rotation plugging bolt 201, thereby plugging the top end of the lubricant placing cavity 202.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
1. The utility model provides a valve rod axle seal structure, includes bottom plate (3), its characterized in that, the top side of bottom plate (3) is fixed with mounting panel (7), sliding connection has extrusion piece (8) in mounting panel (7), the top side of extrusion piece (8) is provided with clamp plate (4), threaded connection has fixing bolt (5) on clamp plate (4), clamp plate (4) and mounting panel (7) are fixed through fixing bolt (5), clamp plate (4), mounting panel (7) and extrusion piece (8) central point put and are inserted and be equipped with valve rod axle (9), the side of valve rod axle (9) is provided with sealing mechanism (1) that are located extrusion piece (8), be provided with in extrusion piece (8) lubricating mechanism (2) of bottom and valve rod axle (9) side laminating.
2. The valve stem shaft sealing structure of the valve according to claim 1, wherein the sealing mechanism (1) comprises a slope (104) arranged inside the extrusion block (8), an O-ring b (102) and an O-ring a (101) are arranged in the slope (104) from top to bottom, and a main sealing ring (103) attached to the side surface of the valve stem shaft (9) is fixed at one end of the O-ring a (101) close to the side surface of the valve stem shaft (9).
3. The valve stem shaft sealing structure of the valve according to claim 1, wherein the lubricating mechanism (2) comprises a lubricant placing cavity (202) formed inside the extrusion block (8), a vertical channel (203) is formed in the side surface of the top end of the pressing plate (4), the bottom end of the channel (203) is communicated with the top end of the lubricant placing cavity (202), one end, far away from the channel (203), of the lubricant placing cavity (202) is attached to the side surface of the valve stem shaft (9), and a blocking bolt (201) is connected to the channel (203) in a threaded manner.
4. The valve stem shaft seal structure of claim 1, wherein the mounting plate (7) is provided with a groove (10) in an annular shape, and the bottom end of the extrusion block (8) is arranged in the groove (10).
5. A valve stem shaft seal according to claim 3, wherein the lubricant receiving chamber (202) is formed in an inclined and annular shape.
6. The valve stem shaft seal structure of claim 3, wherein the fixing bolts (5) are distributed in a ring shape, and a sealing ring is arranged at the joint of the plugging bolt (201) and the pressure plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123102132.XU CN216382800U (en) | 2021-12-07 | 2021-12-07 | Valve rod shaft sealing structure of valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123102132.XU CN216382800U (en) | 2021-12-07 | 2021-12-07 | Valve rod shaft sealing structure of valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216382800U true CN216382800U (en) | 2022-04-26 |
Family
ID=81223816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123102132.XU Active CN216382800U (en) | 2021-12-07 | 2021-12-07 | Valve rod shaft sealing structure of valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216382800U (en) |
-
2021
- 2021-12-07 CN CN202123102132.XU patent/CN216382800U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204164550U (en) | A kind of pipeline extension device of triple seal structure | |
| CN111486233A (en) | Hydraulic self-tightening packing sealing structure | |
| CN216382800U (en) | Valve rod shaft sealing structure of valve | |
| CN103629357B (en) | The sealing mechanism of vane type rotary valve | |
| CN2483560Y (en) | Pressure-compensation type radical sealing device | |
| CN109357022A (en) | A kind of valve seat of flow adjustable cut-off valve | |
| CN215572050U (en) | Wax accumulation mechanism is prevented in wax removal of low-pressure furnace | |
| CN105402416A (en) | Sealing ring for rotating shaft | |
| CN110219826B (en) | Integrated shaft seal for mine water pump | |
| CN111534913B (en) | Lower needle cylinder transmission device of high-speed double-sided circular knitting machine | |
| CN209687779U (en) | Mechanical sealing device with fastening mechanism | |
| CN209026202U (en) | A kind of seal combination with arc baffle ring | |
| CN207569234U (en) | A kind of manual vacuum takes out valve in advance | |
| CN214742928U (en) | Brake caliper piston with good braking effect | |
| CN205824181U (en) | Axostylus axostyle floating seal device | |
| CN212155803U (en) | Split lip seal device | |
| CN213361178U (en) | Ball valve with valve seat sealing structure | |
| CN219796477U (en) | Gas pipeline connecting bolt convenient to disassemble | |
| CN218062888U (en) | Leakage-proof device of hydraulic oil cylinder | |
| CN210289694U (en) | Breaking and blowout prevention combined polish rod sealing box | |
| CN214146520U (en) | Sealing device for speed reducer of oil pumping unit | |
| CN217207728U (en) | Shaft end sealing device of electric slurry pump | |
| CN210218776U (en) | Reverse sealing automatic compensation eccentric half ball valve | |
| CN209146376U (en) | Delta seal eccentric half-ball valve | |
| CN108799660A (en) | A kind of slide lock fixed pattern pipe joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |