CN209800847U - High-pressure gate valve - Google Patents
High-pressure gate valve Download PDFInfo
- Publication number
- CN209800847U CN209800847U CN201920717943.4U CN201920717943U CN209800847U CN 209800847 U CN209800847 U CN 209800847U CN 201920717943 U CN201920717943 U CN 201920717943U CN 209800847 U CN209800847 U CN 209800847U
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- Prior art keywords
- valve
- rod
- limiting
- cover
- support
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- Expired - Fee Related
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Abstract
The utility model discloses a high-pressure gate valve, which is characterized in that the technical proposal comprises a gate valve body, the gate valve body comprises a valve body, a valve cover and a flashboard arranged in the valve cavity of the valve body, a valve rod which can move up and down is arranged on the valve cover in an alternating way, valve seats matched with the valve rod are arranged on the two sides of the flashboard, the valve rod is provided with a limit groove, the joint of the valve rod and the valve cover is filled with sealing filler, the upper side and the lower side of the sealing filler are respectively provided with a filler pressing block which is mutually pressed against the sealing filler, the valve rod is sleeved with a filler pressing cover which is matched with the filler pressing block, and one end of the packing gland is connected with one end of the valve cover through an elastic connecting structure, a support matched with the valve rod is further arranged on the valve cover, a limiting rod movably connected with the support is transversely arranged on the support in an inserting mode, and the flashboard is tightly attached to and sealed with the valve seat when the end part of the limiting rod is pressed against the limiting groove. The utility model has the advantages of simple structure, the leakproofness is good, is difficult for producing the malfunction, safe and reliable and the high effect of control accuracy.
Description
Technical Field
The utility model relates to the technical field of valves, concretely relates to high-pressure gate valve.
Background
The opening and closing part of the high-pressure gate valve is a gate plate, the moving direction of the gate plate is vertical to the fluid direction, and the gate valve can only be fully opened and fully closed and cannot be adjusted and throttled. High-pressure gate valves are forced-sealing valves, so that pressure must be applied to the gate plate to force the sealing surface against leakage when the valve is closed. When the medium enters the valve body from the lower part of the flashboard, the resistance to be overcome by the operating force is the friction force between the valve rod and the packing and the thrust generated by the pressure of the medium, the force for closing the valve is larger than the force for opening the valve, so the diameter of the valve rod is larger, otherwise the failure of the valve rod buckling can occur. The problem that the leakproofness is poor exists in current high-pressure gate valve, and the valve gap seals through the sealing filler with the junction of valve rod, however the sealing filler along with the long-time upper and lower slip of valve rod, can constantly abrade and produce the clearance and then appear the medium easily and reveal. Meanwhile, the high-pressure gate valve is easy to have the problem of misoperation under the conditions of mistaken touch and the like, so that the gate plate cannot completely close the valve, and the control precision of the valve is reduced.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model provides a high-pressure gate valve has simple structure, and the leakproofness is good, is difficult for producing the malfunction, safe and reliable and the high effect of control accuracy.
In order to achieve the above purpose, the utility model provides a following technical scheme: a high-pressure gate valve comprises a gate valve body, a valve cover and a gate plate arranged in a valve cavity of the valve body, wherein a valve rod which can move up and down is arranged on the valve cover in an inserting mode, valve seats matched with the gate plate are arranged on two sides of the gate plate, a valve rod thread part is arranged on the upper portion of the valve rod, the lower portion of the valve rod is fixedly connected with the gate plate, a limiting groove is formed in the valve rod, sealing filler is filled at the joint of the valve rod and the valve cover, filler pressing blocks which are mutually pressed against the sealing filler are arranged on the upper side and the lower side of the sealing filler, a filler pressing cover matched with the filler pressing blocks is sleeved on the valve rod and is positioned on the outer side of the valve cover, one end of the filler pressing cover is mutually connected with one end of the valve cover through an elastic connecting structure, a support, the support is transversely provided with a limiting rod movably connected with the support in an inserting mode, the limiting rod is matched with the limiting groove, and the flashboard is tightly attached to the valve seat and sealed when the end portion of the limiting rod is pressed against the limiting groove.
Through adopting above-mentioned technical scheme, gland is under elastic connection structure effect for gland can extrude the briquetting of packing and then extrude the sealing packing, makes valve rod and valve gap junction be in encapsulated situation constantly, prevents to reduce the leakproofness of gate valve body because of the sealing packing wearing and tearing, sets up gag lever post and spacing recess simultaneously and makes flashboard and the valve seat closely laminate when the tip of gag lever post offsets with spacing recess and press sealedly, avoids the valve rod to take place the malfunction and changes the operating condition of gate valve body.
The utility model discloses further set up to: the connecting structure comprises a connecting nut and a connecting screw rod penetrating through the packing gland, the upper end of the connecting screw rod is provided with a screw rod thread part matched with the connecting nut, and the connecting screw rod is sleeved with a connecting spring and a connecting gasket which are positioned between the connecting nut and the packing gland.
By adopting the technical scheme, the packing gland can be tightly pressed on the packing pressing block under the action of the connecting spring.
The utility model discloses further set up to: the end part of the connecting screw rod is hinged with the valve cover through a pin shaft, and a connecting shaft sleeve fixedly connected with the packing gland is further sleeved on the connecting screw rod.
Through adopting above-mentioned technical scheme, connecting screw is connected with the valve gap is articulated, and spare part takes place to lose when avoiding overhauing the gate valve body, and the connecting axle sleeve is convenient for the condiment gland and slides from top to bottom.
the utility model discloses further set up to: the limiting rod is connected with the support in a threaded mode, and the limiting rod is set to be a manual screw.
Through adopting above-mentioned technical scheme, the gag lever post sets up the gag lever post rotation of being convenient for manual screw to mutually support with spacing recess, prevent that the malfunction from taking place for the valve rod.
The utility model discloses further set up to: the limiting rod is sleeved with a limiting shaft sleeve and is connected with the support in a sliding mode, and the shaft sleeve is fixedly connected with the support.
Through adopting above-mentioned technical scheme, spacing axle sleeve is convenient for the tip and the spacing recess of gag lever post and is mutually supported, prevents that the malfunction from taking place for the valve rod.
The utility model discloses further set up to: and the limiting rod is also sleeved with a limiting spring, and two ends of the limiting spring are respectively and fixedly connected with the limiting rod and the bracket.
Through adopting above-mentioned technical scheme, spacing spring makes the gag lever post reset action for can move by oneself when the tip of gag lever post is in spacing recess department and cooperate with spacing recess, prevent that the malfunction from taking place for the valve rod.
The utility model discloses further set up to: the lifting nut is embedded in the upper end of the support and matched with the support, the lifting nut is connected with the threaded portion of the valve rod in a threaded mode, and the upper portion of the lifting nut is sleeved with a control hand wheel fixedly connected with the lifting nut.
Through adopting above-mentioned technical scheme, the lifting nut drives and then drives the valve rod up-and-down motion through the control hand wheel to the operating condition of control gate valve body.
The utility model discloses further set up to: the lifting nut is further sleeved with a limiting ring fixedly connected with the support, a limiting step matched with the limiting ring is arranged on the lifting nut, and the limiting step and the lifting nut are arranged in an integrated structure.
Through adopting above-mentioned technical scheme, the spacing ring can prevent that the lifting nut from taking place not hard up, avoids influencing the up-and-down motion of valve rod, improves the reliability of gate valve body.
To sum up, the utility model discloses following beneficial effect has:
1. The packing gland can extrude the packing pressing block to extrude the sealing packing under the action of the elastic connecting structure, so that the joint of the valve rod and the valve cover is in a sealing state all the time, the sealing performance of the gate valve body is prevented from being reduced due to the abrasion of the sealing packing, and meanwhile, the limiting rod and the limiting groove are arranged, so that the gate plate and the valve seat are tightly attached and sealed when the end part of the limiting rod is pressed against the limiting groove, and the valve rod is prevented from being mistakenly operated to change the working state of the gate valve body;
2. the lifting nut is driven by the control hand wheel to drive the valve rod to move up and down, so that the working state of the gate valve body is controlled; simultaneously can prevent through setting up the spacing ring that the lifting nut from taking place not hard up, avoid influencing the up-and-down motion of valve rod, improve the reliability of gate valve body.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.
Fig. 3 is a schematic structural diagram of a second embodiment of the present invention.
Reference numerals: 1. a gate valve body; 2. a valve body; 3. a valve cover; 4. a shutter plate; 5. a valve stem; 6. a valve seat; 7. a valve stem threaded portion; 8. a limiting groove; 9. sealing and filling; 10. pressing the filler into blocks; 11. a packing gland; 12. a connecting structure; 13. a support; 14. a bolt; 15. a limiting rod; 16. a connecting nut; 17. connecting a screw rod; 18. a connecting spring; 19. connecting a gasket; 20. a pin shaft; 21. connecting the shaft sleeve; 22. a lifting nut; 23. a control hand wheel; 24. a limiting ring; 25. a limiting step; 26. a limiting shaft sleeve; 27. and a limiting spring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In the first embodiment, as shown in fig. 1 and 2, the first embodiment discloses a high-pressure gate valve, which includes a gate valve body 1, the gate valve body 1 includes a valve body 2, a valve bonnet 3 and a gate plate 4 disposed in a valve cavity of the valve body 2, a valve rod 5 moving up and down is inserted and disposed on the valve bonnet 3, valve seats 6 adapted to both sides of the gate plate 4 are disposed on both sides of the gate plate 4, a threaded portion of the valve rod 5 is disposed on an upper portion of the valve rod 5, a lower portion of the valve rod is fixedly connected to the gate plate 4, a limiting groove 8 is disposed on the valve rod 5, a sealing filler 9 is filled at a connection portion between the valve rod 5 and the valve bonnet 3, packing press blocks 10 abutting against each other are disposed on both upper and lower sides of the sealing filler 9, a packing press cover 11 adapted to the packing press blocks 10 is sleeved on the valve rod 5, the packing, the valve cover 3 is also provided with a bracket 13 matched with the valve rod 5, the valve cover 3 is respectively and fixedly connected with the brackets 13 on the upper side and the lower side of the valve cover and the valve body 2 through a setting bolt 14, the bracket 13 is transversely penetrated and provided with a limiting rod 15 movably connected with the bracket 13, the limiting rod 15 is matched with the limiting groove 8, and the flashboard 4 is tightly attached and sealed with the valve seat 6 when the end part of the limiting rod 15 is pressed against the limiting groove 8; gland 11 is under elastic connection structure 12 effect, make gland 11 can extrude packing briquetting 10 and then extrude sealing packing 9, make valve rod 5 and valve gap 3 junction be in encapsulated situation constantly, prevent to reduce the leakproofness of gate valve body 1 because of sealing packing 9 wearing and tearing, it is sealed with the inseparable laminating of disk seat 6 to set up gag lever post 15 simultaneously and spacing recess 8 and make when the tip of gag lever post 15 offsets with spacing recess 8, avoid valve rod 5 to take place the malfunction and change the operating condition of gate valve body 1.
The connecting structure 12 comprises a connecting nut 16 and a connecting screw rod 17 penetrating through the packing gland 11, the upper end of the connecting screw rod 17 is provided with a screw rod thread part matched with the connecting nut 16, the connecting screw rod 17 is sleeved with a connecting spring 18 and a connecting gasket 19 which are positioned between the connecting nut 16 and the packing gland 11, and the connecting spring is an extension spring; under the action of the connecting spring 18, the packing gland 11 can be tightly pressed on the packing pressing block 10.
The end part of the connecting screw rod 17 is hinged with the valve cover 3 through a pin shaft 20, and a connecting shaft sleeve 21 fixedly connected with the packing gland 11 is sleeved on the connecting screw rod 17; connecting screw 17 is connected with valve gap 3 is articulated, and spare part takes place to lose when can avoiding overhauing gate valve body 1, and connecting sleeve 21 is convenient for the condiment gland and is slided from top to bottom.
The limiting rod 15 and the bracket 13 are connected with each other in a threaded mode, and the limiting rod 15 is set as a manual screw; the limiting rod 15 is arranged as a manual screw, so that the limiting rod 15 can rotate conveniently, and is matched with the limiting groove 8 to prevent the valve rod 5 from generating misoperation.
A lifting nut 22 matched with the bracket 13 is embedded at the upper end of the bracket 13, the lifting nut 22 is connected with the thread part of the valve rod 5 in a thread manner, and a control hand wheel 23 fixedly connected with the lifting nut 22 is sleeved at the upper part of the lifting nut 22; the lifting nut 22 is driven by the control hand wheel 23 to drive the valve rod 5 to move up and down, so that the working state of the gate valve body 1 is controlled.
A limit ring 24 fixedly connected with the bracket 13 is sleeved outside the lifting nut 22, a limit step 25 matched with the limit ring 24 is arranged on the lifting nut 22, and the limit step 25 and the lifting nut 22 are arranged in an integrated structure; the stop collar 24 can prevent the lifting nut 22 from loosening, thereby avoiding influencing the up-and-down action of the valve rod 5 and improving the reliability of the gate valve body 1.
In the second embodiment, as shown in fig. 3, the difference between the first embodiment and the second embodiment is that the limiting rod 15 is slidably connected to the bracket 13 by sleeving a limiting shaft sleeve 26, and the shaft sleeve is fixedly connected to the bracket 13; the limiting shaft sleeve 26 is convenient for the end part of the limiting rod 15 to be matched with the limiting groove 8, so that the valve rod 5 is prevented from generating misoperation; the limiting rod 15 is further sleeved with a limiting spring 27, two ends of the limiting spring 27 are fixedly connected with the limiting rod 15 and the support 13 respectively, and the limiting spring 27 is set to be a contraction spring; the limiting spring 27 enables the limiting rod 15 to have a resetting effect, so that the end part of the limiting rod 15 can automatically act to be matched with the limiting groove 8 when being positioned at the limiting groove 8, and the valve rod 5 is prevented from generating misoperation.
The working process is as follows: after the valve rod 5 is used for a long time, the sealing packing 9 is worn, the packing gland 11 is pressed close to the valve cover 3 under the action of the connecting structure, so that the packing gland 11 extrudes the packing pressing block 10 to further extrude the sealing packing 9, and the sealing performance of the connecting part of the valve rod 5 and the valve cover 3 is ensured; meanwhile, when the gate valve body 1 is tightly attached and sealed with the valve seat 6 in the using process, the limiting rod 15 and the limiting groove 8 are matched and clamped with each other, and the valve rod 5 is prevented from generating misoperation to influence the control state of the gate valve body 1.
To sum up, the utility model discloses following beneficial effect has:
1. Under the action of the elastic connecting structure 12, the packing gland 11 can extrude the packing pressing block 10 and further extrude the sealing packing 9, so that the joint of the valve rod 5 and the valve cover 3 is constantly in a sealing state, the sealing performance of the gate valve body 1 is prevented from being reduced due to the abrasion of the sealing packing 9, and meanwhile, the limiting rod 15 and the limiting groove 8 are arranged, so that the gate plate 4 is tightly attached and sealed with the valve seat 6 when the end part of the limiting rod 15 is pressed against the limiting groove 8, and the valve rod 5 is prevented from being mistakenly operated to change the working state of the gate valve body 1;
2. The lifting nut 22 is driven by the control hand wheel 23 to drive the valve rod 5 to move up and down, so that the working state of the gate valve body 1 is controlled; simultaneously, the lifting nut 22 can be prevented from loosening by arranging the limiting ring 24, the up-and-down action of the valve rod 5 is avoided being influenced, and the reliability of the gate valve body 1 is improved. The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, any modification, equivalent replacement, or improvement made within the design concept of the present invention should be included within the protection scope of the present invention.
Claims (8)
1. The utility model provides a high-pressure gate valve, including gate valve body (1), gate valve body (1) including valve body (2) and valve gap (3) and set up flashboard (4) in valve body (2) valve chamber, valve gap (3) go up the interlude be provided with valve rod (5) of activity from top to bottom, flashboard (4) both sides are equipped with disk seat (6) rather than the looks adaptation, its characterized in that: the upper part of the valve rod (5) is provided with a valve rod (5) threaded part, the lower part of the valve rod is fixedly connected with the flashboard (4), the valve rod (5) is provided with a limiting groove (8), the joint of the valve rod (5) and the valve cover (3) is filled with a sealing filler (9), the upper side and the lower side of the sealing filler (9) are respectively provided with a filler pressing block (10) which is mutually pressed against the sealing filler, the valve rod (5) is sleeved with a filler pressing cover (11) matched with the filler pressing block (10), the filler pressing cover (11) is positioned at the outer side of the valve cover (3), one end of the filler pressing cover (11) is mutually connected with one end of the valve cover (3) through an elastic connecting structure (12), the valve cover (3) is also provided with a support (13) matched with the valve rod (5), and the valve cover (3) is respectively and fixedly connected with the support (13, the support (13) is transversely provided with a limiting rod (15) movably connected with the support in a penetrating manner, the limiting rod (15) is matched with the limiting groove (8), and the flashboard (4) is tightly attached to the valve seat (6) and sealed when the end part of the limiting rod (15) is pressed against the limiting groove (8).
2. A high-pressure gate valve according to claim 1, characterized in that: the connecting structure (12) comprises a connecting nut (16) and a connecting screw rod (17) penetrating through the packing gland (11), the upper end of the connecting screw rod (17) is provided with a screw rod thread part matched with the connecting nut (16), and the connecting screw rod (17) is sleeved with a connecting spring (18) and a connecting gasket (19) which are positioned between the connecting nut (16) and the packing gland (11).
3. A high-pressure gate valve according to claim 2, characterized in that: the end part of the connecting screw rod (17) is hinged with the valve cover (3) through a pin shaft (20), and a connecting shaft sleeve (21) fixedly connected with the packing gland (11) is further sleeved on the connecting screw rod (17).
4. A high-pressure gate valve according to claim 2 or 3, characterized in that: the limiting rod (15) and the support (13) are connected with each other in a threaded mode, and the limiting rod (15) is set to be a manual screw.
5. A high-pressure gate valve according to claim 2 or 3, characterized in that: the limiting rod (15) is slidably connected with the support (13) through a limiting shaft sleeve (26) in a sleeved mode, and the shaft sleeve is fixedly connected with the support (13).
6. A high-pressure gate valve according to claim 5, characterized in that: and the limiting rod (15) is further sleeved with a limiting spring (27), and two ends of the limiting spring (27) are fixedly connected with the limiting rod (15) and the support (13) respectively.
7. A high-pressure gate valve according to claim 1, characterized in that: support (13) upper end inlays and is equipped with lifting nut (22) rather than the looks adaptation, lifting nut (22) with valve rod (5) screw thread portion passes through screw thread mode interconnect, and lifting nut (22) upper portion cover is equipped with rather than fixed connection's control hand wheel (23).
8. A high-pressure gate valve according to claim 7, characterized in that: the lifting nut (22) is further sleeved with a limiting ring (24) fixedly connected with the support (13), a limiting step (25) matched with the limiting ring (24) is arranged on the lifting nut (22), and the limiting step (25) and the lifting nut (22) are arranged in an integrated structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920717943.4U CN209800847U (en) | 2019-05-20 | 2019-05-20 | High-pressure gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920717943.4U CN209800847U (en) | 2019-05-20 | 2019-05-20 | High-pressure gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209800847U true CN209800847U (en) | 2019-12-17 |
Family
ID=68833107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920717943.4U Expired - Fee Related CN209800847U (en) | 2019-05-20 | 2019-05-20 | High-pressure gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209800847U (en) |
-
2019
- 2019-05-20 CN CN201920717943.4U patent/CN209800847U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20191217 Termination date: 20210520 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |