CN220016137U - Soft-seal double-valve-seat gate valve - Google Patents
Soft-seal double-valve-seat gate valve Download PDFInfo
- Publication number
- CN220016137U CN220016137U CN202321477179.0U CN202321477179U CN220016137U CN 220016137 U CN220016137 U CN 220016137U CN 202321477179 U CN202321477179 U CN 202321477179U CN 220016137 U CN220016137 U CN 220016137U
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- 238000007789 sealing Methods 0.000 claims abstract description 63
- 230000005540 biological transmission Effects 0.000 claims description 11
- 230000008859 change Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model discloses a soft sealing double-valve seat gate valve, which comprises a first valve seat, a second valve seat, valve plates, sealing sleeves and valve rods, wherein the first valve seat and the second valve seat are fixedly connected through bolts, cover plates are arranged on the upper side and the lower side of the first valve seat and the second valve seat respectively, the valve plates are positioned between the first valve seat and the second valve seat, one end of each valve rod penetrates through one of the cover plates and is connected with the valve plates, the other end of each valve rod is in threaded connection with a hand wheel, the hand wheels are rotatably arranged on the cover plates, the sealing sleeves are arranged on two sides of the valve plates, positioning grooves for installing the sealing sleeves are arranged in the first valve seat and the second valve seat respectively, and the sealing sleeves are in a stepped shaft sleeve structure.
Description
Technical Field
The utility model discloses a soft sealing double-valve seat gate valve, and belongs to the technical field of valves.
Background
The gate valve is also called as a manual knife gate valve. The knife gate valve is a valve with a gate plate and a valve seat being always tightly contacted and sealed, and the principle is that a circular opening with the size of the drift diameter is formed on the gate plate, and the circular opening on the gate plate and the drift diameter are completely separated and matched through the opening and closing of the gate plate. The valve has the advantages that the valve body has no groove in the drift diameter, the medium can not be blocked, the valve has full-flux radial flow characteristic, and the sealing structure can be divided into a soft sealing structure and a hard sealing structure. The penetrating knife gate valve has the characteristics of precise structure, good manufacturability, compact structure and the like, and the sealing valve seat is of a movable structure design and has the functions of wear resistance and automatic compensation, so that the service life is longer.
The prior gate valve mostly adopts a valve plate and valve seat hard sealing mode to realize the sealing of the valve, and the abrasion of the valve plate and the valve seat is larger in the process of relative movement, so that the sealing performance of the gate valve is reduced after a period of working, and the service life of the gate valve is not long.
Disclosure of Invention
The utility model aims to solve the problems in the prior art and provides a soft sealing double-valve seat gate valve.
The soft sealing double-valve seat gate valve is characterized in that the first valve seat and the second valve seat are fixedly connected through bolts, cover plates are arranged on the upper side and the lower side of the first valve seat and the second valve seat respectively, the valve plate is positioned between the first valve seat and the second valve seat, one end of the valve rod penetrates through one of the cover plates and is connected with the valve plate, a hand wheel is connected with the other end of the valve rod in a threaded mode, the hand wheel is rotatably arranged on the cover plates, two sealing sleeves are arranged and are positioned on two sides of the valve plate, positioning grooves for installing the sealing sleeves are formed in the first valve seat and the second valve seat respectively, one end, close to the valve plate, of each sealing sleeve is large in diameter, the other end of each sealing sleeve is small in diameter, an annular groove is formed in each sealing sleeve, a limiting piece and a power piece are arranged on each of the first valve seat and the second valve seat, one end, far away from the valve plate, of each sealing sleeve is provided with an elastic piece, and the width of the lower end of the valve plate is smaller than the distance between the two sealing sleeves.
Preferably, the elastic piece comprises four first springs distributed in an array, and the sealing sleeve is provided with a positioning pin for positioning the first springs.
Preferably, the limiting piece comprises a movable rod, a second spring and a headless screw, wherein the movable rod is horizontally and slidably arranged on the first valve seat or the second valve seat, one end of the movable rod can be inserted into the annular groove, the headless screw is in threaded connection with the first valve seat or the second valve seat, and the second spring is sleeved on the movable rod and applies acting force for the movable rod, wherein the acting force is separated from the annular groove.
Preferably, the power piece includes transfer line, stop bolt, shutoff piece and gear, all be provided with the mounting groove on first disk seat and the second disk seat, the gear is located the mounting groove, the one end of transfer line has the spacing portion with gear sliding connection, stop bolt's one end pass behind the shutoff piece with transfer line threaded connection, the shutoff piece passes through bolt and first disk seat or second disk seat fixed connection, the seal cover corresponds the annular groove's position be provided with gear engagement's profile of tooth piece.
Preferably, the transmission rod is of a stepped shaft structure, and a third spring is arranged between the transmission rod and the gear.
Preferably, the first valve seat and the second valve seat are provided with mutually matched bulges, and one end, away from each other, of each of the first valve seat and the second valve seat is provided with a flange plate.
Compared with the prior art, the utility model has the beneficial effects that:
through setting up seal cover, elastic component, locating part and driving medium, the locating part can make seal cover slidable mounting in first disk seat or second disk seat, and the seal cover is in dynamic soft seal conflict with the valve plate, so can reduce wearing and tearing between the two, and the driving medium can drive the seal cover simultaneously and rotate for seal cover and the relative position of valve plate change, so can make the wearing and tearing between seal cover and the valve plate even, and guarantee the leakproofness of valve plate, prolonged the life of valve moreover.
Drawings
FIG. 1 is a schematic diagram of a soft seal double-seat gate valve according to the present utility model;
FIG. 2 is a partial cross-sectional view of a soft seal double-seat gate valve of the present utility model;
FIG. 3 is a schematic view of the valve plate, seal cartridge, transmission member and limiter of the present utility model;
FIG. 4 is an exploded view of the transmission member of the present utility model;
FIG. 5 is a schematic view of a first valve seat according to the present utility model;
reference numerals: 1. a hand wheel; 2. a valve stem; 3. a cover plate; 4. a flange plate; 5. a first valve seat; 6. a second valve seat; 7. a limiting piece; 8. a power member; 9. a mounting groove; 10. a valve plate; 11. an elastic member; 12. sealing sleeve; 13. a first spring; 14. a movable rod; 15. a second spring; 16. a headless screw; 17. a protrusion; 18. a tooth-shaped block; 19. an annular groove; 20. a gear; 21. a third spring; 22. a limit part; 23. a blocking member; 24. a transmission rod; 25. a limit bolt; 26. and a positioning groove.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1-5, a soft sealing double-valve seat gate valve comprises a first valve seat 5, a second valve seat 6, a valve plate 10, a sealing sleeve 12 and a valve rod 2, wherein the first valve seat 5 and the second valve seat 6 are fixedly connected through bolts, cover plates 3 are respectively arranged on the upper side and the lower side of the first valve seat 5 and the second valve seat 6, the valve plate 10 is positioned between the first valve seat 5 and the second valve seat 6, one end of the valve rod 2 penetrates through one of the cover plates 3 and is connected with the valve plate 10, the other end of the valve rod 2 is in threaded connection with a hand wheel 1, the hand wheel 1 is rotatably arranged on the cover plates 3, the sealing sleeve 12 is arranged on two sides of the valve plate 10, positioning grooves 26 for installing the sealing sleeve 12 are respectively arranged in the first valve seat 5 and the second valve seat 6, the sealing sleeve 12 is in a stepped shaft sleeve structure, one end of the sealing sleeve 12, which is close to the valve plate 10 is large in diameter, the other end of the sealing sleeve 12 is provided with an annular groove 19, the first valve seat 5 and the second valve seat 6 are respectively provided with a limiting piece 7 and a power piece 8, one end of the sealing sleeve 12 far away from the valve plate 10 is provided with an elastic piece 11, and the width of the lower end of the valve plate 10 is smaller than the distance between the two sealing sleeves 12.
The elastic piece 11 comprises four first springs 13 distributed in an array, the sealing sleeve 12 is provided with positioning pins for positioning the first springs 13, the four first springs 13 can apply a certain elastic force to the sealing sleeve 12, so that the sealing sleeve 12 can be abutted against the valve plate 10, sealing is achieved, the positioning pins can prevent the first springs 13 from falling off during installation, the sealing sleeve 12 can be guaranteed to be stressed more uniformly, the limiting piece 7 comprises a movable rod 14, a second spring 15 and a headless screw 16, the movable rod 14 is horizontally and slidably arranged on the first valve seat 5 or the second valve seat 6, one end of the movable rod can be inserted into the annular groove 19, the headless screw 16 is in threaded connection with the first valve seat 5 or the second valve seat 6, the second spring 15 is sleeved on the movable rod 14, a force for separating the movable rod 14 from the annular groove 19 is applied, the length of the movable rod 14 extending into the locating groove 26 is controlled through the knob headless screw 16, after the sealing sleeve 12 is installed into the locating groove 26, then one end of the movable rod 14 is just inserted into the annular groove 19, so that the sealing sleeve 12 can be separated from the first valve seat 5 or the second valve seat 6 and cannot be limited by the sliding distance of the sealing sleeve 6.
The power piece 8 includes transfer line 24, stop bolt 25, closure piece 23 and gear 20, all be provided with mounting groove 9 on first disk seat 5 and the second disk seat 6, gear 20 is located mounting groove 9, transfer line 24's one end has the spacing portion 22 with gear 20 sliding connection, stop bolt 25's one end passes behind the closure piece 23 and transfer line 24 threaded connection, closure piece 23 passes through bolt and first disk seat 5 or second disk seat 6 fixed connection, seal cover 12 corresponds the annular groove 19's position and is provided with the profile of tooth piece 18 with gear 20 meshing, through rotating stop bolt 25 for transfer line 24 and gear 20 synchronous rotation, gear 20 meshes with profile of tooth piece 18 and drives seal cover 12 rotation, so can change the relative position that seal cover 12 contradicted with valve plate 10, make wearing and tearing between the two more even, local wearing and tearing too big and influence its leakproofness can not appear, closure piece 23 can prevent that transfer line 24 from droing in first disk seat 5 or the second disk seat 6.
The transfer line 24 is the step shaft structure, and be provided with the third spring 21 between its and the gear 20, the third spring 21 applys elasticity to gear 20 and transfer line 24, thereby increase the resistance when both rotate, make stop bolt 25 can not rotate easily, all be provided with the protruding 17 of mutually supporting on first disk seat 5 and the second disk seat 6, protruding 17 can make both have the effect of location when the equipment, and also can reduce the possibility of outward seepage of fluid, the one end that first disk seat 5 and second disk seat 6 kept away from each other is provided with ring flange 4, utilize ring flange 4 can conveniently fix the push-pull valve on the outside pipeline.
Working principle: in the use of the gate valve, the sealing sleeve 12 protrudes out of the inner walls of the first valve seat 5 and the second valve seat 6 under the action of the first spring 13, and is limited by the movable rod 14, when the hand wheel 1 is rotated to drive the valve rod 2 to rotate, the valve plate 10 descends, the lower end of the valve plate 10 pushes the two sealing sleeves 12 to move towards two sides and compress the first spring 13, the sealing sleeves 12 keep dynamic soft sealing contact with the valve plate 10, so that the gate valve is closed, the defect that the gate valve is easy to wear due to hard sealing is overcome, meanwhile, the transmission rod 24 drives the gear 20 to rotate through rotating the limiting bolt 25, and the sealing sleeves 12 are rotated, so that the relative positions of the sealing sleeves 12 and the valve plate 10 are changed, the friction positions of the sealing sleeves 12 are changed, the end faces of the sealing sleeves 12 are uniformly worn, the sealing performance of the sealing sleeves is effectively guaranteed, and the service life is longer.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model 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. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. The utility model provides a soft seal double valve seat push-pull valve, includes first disk seat (5), second disk seat (6), valve plate (10), seal cover (12) and valve rod (2), its characterized in that, first disk seat (5) and second disk seat (6) pass through bolt fixed connection, and both sides all are provided with apron (3) about both, valve plate (10) are located between first disk seat (5) and second disk seat (6), after one of them apron (3) is passed to one end of valve rod (2) and be connected with valve plate (10), and the other end threaded connection of valve rod (2) has hand wheel (1), hand wheel (1) are rotated and are installed on apron (3), seal cover (12) are provided with two to be located the both sides of valve plate (10), all be provided with in first disk seat (5) and second disk seat (6) be used for installing seal cover (12) constant head tank (26), it is the one end diameter big that is close to valve plate (10), and the other end diameter is little, be provided with seal cover (12) on seal cover (12) after passing one apron (3) and be provided with annular groove (19), seal cover (8) are kept away from on first disk seat (6) and valve plate (8), the width of the lower end of the valve plate (10) is smaller than the distance between the two sealing sleeves (12).
2. A soft sealing double valve seat gate valve according to claim 1, characterized in that the elastic element (11) comprises four first springs (13) distributed in an array, and the sealing sleeve (12) is provided with a positioning pin for positioning the first springs (13).
3. A soft sealing double-valve seat gate valve according to claim 1, characterized in that the limiting piece (7) comprises a movable rod (14), a second spring (15) and a headless screw (16), wherein the movable rod (14) is horizontally and slidably arranged on the first valve seat (5) or the second valve seat (6), one end of the movable rod can be inserted into the annular groove (19), the headless screw (16) is in threaded connection with the first valve seat (5) or the second valve seat (6), and the second spring (15) is sleeved on the movable rod (14) and applies a force for separating from the annular groove (19) to the movable rod (14).
4. The soft sealing double-valve seat gate valve according to claim 1, wherein the power piece (8) comprises a transmission rod (24), a limit bolt (25), a sealing piece (23) and a gear (20), the first valve seat (5) and the second valve seat (6) are respectively provided with a mounting groove (9), the gear (20) is positioned in the mounting groove (9), one end of the transmission rod (24) is provided with a limit part (22) which is in sliding connection with the gear (20), one end of the limit bolt (25) penetrates through the sealing piece (23) and then is in threaded connection with the transmission rod (24), the sealing piece (23) is fixedly connected with the first valve seat (5) or the second valve seat (6) through the bolt, and a tooth-shaped block (18) meshed with the gear (20) is arranged at a position of the sealing sleeve (12) corresponding to the annular groove (19).
5. A soft sealing double valve seat gate valve according to claim 4, characterized in that the transmission rod (24) is of a stepped shaft structure and a third spring (21) is arranged between the transmission rod and the gear (20).
6. The soft sealing double-valve seat gate valve according to claim 1, wherein the first valve seat (5) and the second valve seat (6) are respectively provided with a protrusion (17) which are matched with each other, and one end far away from each other is provided with a flange plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321477179.0U CN220016137U (en) | 2023-06-09 | 2023-06-09 | Soft-seal double-valve-seat gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321477179.0U CN220016137U (en) | 2023-06-09 | 2023-06-09 | Soft-seal double-valve-seat gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220016137U true CN220016137U (en) | 2023-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321477179.0U Active CN220016137U (en) | 2023-06-09 | 2023-06-09 | Soft-seal double-valve-seat gate valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN220016137U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118088720A (en) * | 2024-04-23 | 2024-05-28 | 福建贝得阀门有限公司 | Gate valve with long service life |
-
2023
- 2023-06-09 CN CN202321477179.0U patent/CN220016137U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118088720A (en) * | 2024-04-23 | 2024-05-28 | 福建贝得阀门有限公司 | Gate valve with long service life |
| CN118088720B (en) * | 2024-04-23 | 2024-07-02 | 福建贝得阀门有限公司 | Gate valve with long service life |
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