CN212899842U - Micro-leakage floating ball valve - Google Patents
Micro-leakage floating ball valve Download PDFInfo
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- CN212899842U CN212899842U CN202021317156.XU CN202021317156U CN212899842U CN 212899842 U CN212899842 U CN 212899842U CN 202021317156 U CN202021317156 U CN 202021317156U CN 212899842 U CN212899842 U CN 212899842U
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- 238000007789 sealing Methods 0.000 claims abstract description 44
- 238000003825 pressing Methods 0.000 claims abstract description 27
- 238000012856 packing Methods 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000000945 filler Substances 0.000 abstract description 19
- 210000004907 gland Anatomy 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of soft seal ball valves, in particular to a micro-leakage floating ball valve, which ensures the sealing performance and improves the safety, and a valve seat can bear larger medium thrust and prolongs the service life, and comprises a valve body, a valve cover, a ball body and a valve rod, wherein the ball body is arranged between the valve body and the valve cover, the valve seat is arranged at the top and the bottom of the ball body, the valve seat is of an elastic structure, and the bottom end of the valve rod extends into the valve body and is connected with the top of the ball body; the top of valve body is provided with the packing box to be provided with sealing filler and pressure cover in the packing box, the bottom and the spheroid top of valve rod are pegged graft, and sealing filler and pressure cover are passed to the top of valve rod, and connect on the top of valve rod and be provided with the handle, and the top of pressing the cover is provided with gland nut, and is provided with belleville spring pressing between cover and gland nut.
Description
Technical Field
The utility model relates to a technical field of soft seal ball valve especially relates to a leak unsteady ball valve a little, is volatile gaseous pollutant and dangerous fluid to the medium.
Background
The process medium in the production process of petroleum and petrochemical products has more or less leakage, particularly the medium is volatile pollution gas and dangerous fluid, and the leakage of the medium is accumulated to a certain extent, so that the atmosphere is polluted, the health of people is harmed, and some of the medium can even endanger life or generate explosion. Some highly hazardous toxic media are of relatively small molecular weight, are prone to leakage from manufacturing equipment, are not readily visible, and, in the event of a microleakage, can cause irreparable serious damage to the atmosphere and to operating personnel. The proportion of valves in various leakages of chemical devices is large because of the large number of valves and the common lack of micro-leakage valves in the past.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a to prior art not enough, the utility model provides a guarantee the leakproofness, improve the security to the disk seat can bear great medium thrust, improves life's the unsteady ball valve of leaking a little.
(II) technical scheme
In order to achieve the above object, the utility model provides a following technical scheme: a micro-leakage floating ball valve comprises a valve body, a valve cover, a ball body and a valve rod, wherein the ball body is arranged between the valve body and the valve cover, valve seats are arranged at the top and the bottom of the ball body, the valve seats are of elastic structures, and the bottom end of the valve rod extends into the valve body and is connected with the top of the ball body; the top of the valve body is provided with a stuffing box, sealing stuffing and a pressing sleeve are arranged in the stuffing box, the bottom end of the valve rod is connected with the top of the ball body in an inserting mode, the top end of the valve rod penetrates through the sealing stuffing and the pressing sleeve, a handle is connected and arranged at the top end of the valve rod, a pressing nut is arranged at the top end of the pressing sleeve, and a disc spring is arranged between the pressing sleeve and the pressing nut.
Preferably, the bottom of the outer side of the valve rod is provided with a thrust gasket, the bottom end of the thrust gasket is tightly attached to the valve body, the bottom of the outer side of the valve rod is provided with an annular groove, and an O-shaped ring is installed in the annular groove.
Preferably, the sealing filler comprises a multi-layer filler structure, the upper and lower layer filler structures of the sealing filler are high-density flexible graphite, the middle filler structure of the sealing filler is low-density filler, and the shape of the sealing filler is conical.
Preferably, the valve also comprises a fixing nut, a fixing stud is arranged on the valve body, the valve body is connected with the valve cover through the fixing stud and the fixing nut, a sealing gasket is arranged between the valve body and the valve cover, and metal surfaces of the valve body and the valve cover, which are in contact with the sealing gasket, are provided with water line grooves.
(III) advantageous effects
Compared with the prior art, the utility model provides a leak unsteady ball valve a little possesses following beneficial effect:
1. according to the micro-leakage floating ball valve, the valve seat is of an elastic structure, when the medium pressure is small, the contact area between the valve seat and the ball body is small, large sealing specific pressure can be formed on the contact surface, reliable sealing is ensured, and the torque is small; when the medium pressure is larger, along with the elastic deformation of the valve seat, the contact area of the valve seat and the ball body is increased, so that the valve seat can bear larger medium thrust without being damaged, the sealing performance is ensured, the safety is improved, and the valve seat can bear larger medium thrust, so that the service life is prolonged;
2. according to the micro-leakage floating ball valve, the disc spring is arranged between the pressing sleeve and the compression nut, and pressing force is continuously provided for packing, so that the sealing packing at the position of the valve rod is ensured to be sealed for a long time, and no leakage is generated.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of a partially enlarged structure of the joint of the ball and the valve seat of the present invention;
FIG. 3 is a schematic view of the enlarged structure of the valve body, the valve cover and the sealing gasket;
in the drawings, the reference numbers: 1. a valve body; 2. a valve cover; 3. a sphere; 4. a valve stem; 5. a valve seat; 6. sealing and filling; 7. pressing the sleeve; 8. a handle; 9. a compression nut; 10. a disc spring; 11. a thrust washer; 12. an "O" ring; 13. fixing a nut; 14. fixing the stud; 15. a gasket seal.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the utility model discloses a micro-leakage floating ball valve, including valve body 1, valve gap 2, spheroid 3 and valve rod 4, spheroid 3 is installed between valve body 1 and valve gap 2, and all is provided with valve seat 5 at the top and the bottom of spheroid 3, valve seat 5 is elastic construction, and the bottom of valve rod 4 stretches into in the valve body 1 and is connected with the top of spheroid 3, and valve seat 5 is elastic construction, and when medium pressure is less, the area of contact of valve seat 5 and spheroid 3 is little, can form great sealed specific pressure at the contact surface, ensures reliable seal, and the moment of torsion is little; when the medium pressure is larger, along with the elastic deformation of the valve seat 5, the contact area between the valve seat 5 and the ball body 3 is increased, so that the valve seat 5 can bear larger medium thrust without being damaged, the sealing performance is ensured, the safety is improved, and the valve seat can bear larger medium thrust, so that the service life is prolonged; the top of the valve body 1 is provided with a stuffing box, a sealing stuffing 6 and a pressing sleeve 7 are arranged in the stuffing box, the bottom end of the valve rod 4 is inserted into the top of the ball body 3, the top end of the valve rod 4 penetrates through the sealing stuffing 6 and the pressing sleeve 7, a handle 8 is connected and arranged at the top end of the valve rod 4, a pressing nut 9 is arranged at the top end of the pressing sleeve 7, a disc spring 10 is arranged between the pressing sleeve 7 and the pressing nut 9, the disc spring 10 is arranged between the pressing sleeve 7 and the pressing nut 9, packing is continuously provided with pressing force, and therefore the sealing stuffing 6 at the position of the valve rod 4 is ensured to be sealed permanently and cannot leak.
The utility model relates to a micro-leakage floating ball valve, the outside bottom of the valve rod 4 is provided with a thrust gasket 11, the bottom end of the thrust gasket 11 is tightly attached to the valve body 1, the outside bottom of the valve rod 4 is provided with a ring groove, and an O-shaped ring 12 is arranged in the ring groove; the sealing of the bottom of the valve stem 4 is ensured by a thrust washer 11 and an "O" ring 12.
The utility model relates to a micro-leakage floating ball valve, the sealing filler 6 comprises a multi-layer filler structure, the upper and lower layer filler structures of the sealing filler 6 are high-density flexible graphite, the middle filler structure of the sealing filler 6 is low-density filler, and the shape of the sealing filler 6 is conical; compared with the traditional plane structure, the conical structure is easier to expand radially, and meanwhile, the middle layer filler is small in density, soft, small in required pressing force and good in sealing effect.
The utility model relates to a micro-leakage floating ball valve, which also comprises a fixing nut 13, wherein a fixing stud 14 is arranged on the valve body 1, the valve body 1 and the valve cover 2 are connected through the fixing stud 14 and the fixing nut 13, a sealing gasket 15 is arranged between the valve body 1 and the valve cover 2, and metal surfaces of the valve body 1 and the valve cover 2, which are contacted with the sealing gasket 15, are provided with water line grooves; the sealing performance between the valve body 1 and the valve cover 2 is ensured through the sealing gasket 15, and the sealing performance of the contact surface is further improved through the water line grooves formed in the valve body 1 and the valve cover 2.
When the sealing device is used, the valve seat 5 is of an elastic structure, when the medium pressure is small, the contact area between the valve seat 5 and the ball body 3 is small, large sealing specific pressure can be formed on the contact surface, reliable sealing is ensured, and the torque is small; when the medium pressure is larger, along with the elastic deformation of the valve seat 5, the contact area between the valve seat 5 and the ball body 3 is increased, so that the valve seat 5 can bear larger medium thrust without being damaged, the sealing performance is ensured, the safety is improved, and the valve seat can bear larger medium thrust, so that the service life is prolonged; through set up belleville spring 10 between pressure cover 7 and gland nut 9, continuously provide the packing and pack the packing, thereby guarantee that the packing 6 of valve rod 4 position is sealed lastingly, can not produce outer the hourglass, compare in traditional planar structure, the toper structure is radial expansion more easily, the intermediate level packing density is little simultaneously, it is soft, required packing force is little, it is sealed effectual, guarantee the leakproofness between valve body 1 and valve gap 2 through seal gasket 15, through be provided with the water line groove on valve body 1 and valve gap 2, further improve the leakproofness of contact surface.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A micro-leakage floating ball valve comprises a valve body (1), a valve cover (2), a ball body (3) and a valve rod (4), wherein the ball body (3) is arranged between the valve body (1) and the valve cover (2), valve seats (5) are arranged at the top and the bottom of the ball body (3), the valve seats (5) are of elastic structures, and the bottom end of the valve rod (4) extends into the valve body (1) and is connected with the top of the ball body (3); the ball valve is characterized in that a packing box is arranged at the top of the valve body (1), a sealing packing (6) and a pressing sleeve (7) are arranged in the packing box, the bottom end of the valve rod (4) is connected with the top of the ball body (3) in an inserting mode, the top end of the valve rod (4) penetrates through the sealing packing (6) and the pressing sleeve (7), a handle (8) is connected and arranged at the top end of the valve rod (4), a pressing nut (9) is arranged at the top end of the pressing sleeve (7), and a disc spring (10) is arranged between the pressing sleeve (7) and the pressing nut (9).
2. A micro-leakage floating ball valve according to claim 1, characterized in that the bottom of the outer side of the valve rod (4) is provided with a thrust gasket (11), the bottom end of the thrust gasket (11) is tightly attached to the valve body (1), the bottom of the outer side of the valve rod (4) is provided with an annular groove, and an "O" ring (12) is installed in the annular groove.
3. A micro-leak floating ball valve according to claim 1, wherein the sealing packing (6) comprises a multi-layer packing structure, the upper and lower packing structures of the sealing packing (6) are high-density flexible graphite, the middle packing structure of the sealing packing (6) is a low-density packing, and the shape of the sealing packing (6) is a cone.
4. The micro-leakage floating ball valve according to claim 1, further comprising a fixing nut (13), wherein a fixing stud (14) is arranged on the valve body (1), the valve body (1) and the valve cover (2) are connected through the fixing stud (14) and the fixing nut (13), a sealing gasket (15) is arranged between the valve body (1) and the valve cover (2), and a water line groove is formed in metal surfaces of the valve body (1) and the valve cover (2) which are in contact with the sealing gasket (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021317156.XU CN212899842U (en) | 2020-07-08 | 2020-07-08 | Micro-leakage floating ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021317156.XU CN212899842U (en) | 2020-07-08 | 2020-07-08 | Micro-leakage floating ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212899842U true CN212899842U (en) | 2021-04-06 |
Family
ID=75284062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021317156.XU Active CN212899842U (en) | 2020-07-08 | 2020-07-08 | Micro-leakage floating ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212899842U (en) |
-
2020
- 2020-07-08 CN CN202021317156.XU patent/CN212899842U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A micro leakage floating ball valve Granted publication date: 20210406 Pledgee: The Bank of Cangzhou branch of Yuhe Limited by Share Ltd. Pledgor: HEBEI GUANGDE FLUID CONTROL LTD. Registration number: Y2024980013460 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |