CN115539663A - High leakproofness gate valve - Google Patents
High leakproofness gate valve Download PDFInfo
- Publication number
- CN115539663A CN115539663A CN202211287208.7A CN202211287208A CN115539663A CN 115539663 A CN115539663 A CN 115539663A CN 202211287208 A CN202211287208 A CN 202211287208A CN 115539663 A CN115539663 A CN 115539663A
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- valve
- plate
- valve plate
- adjusting
- valve rod
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a gate valve with high sealing performance, which is characterized by comprising a valve body and a valve rod, wherein the extending end of the valve rod is connected with a valve plate mechanism, the valve plate mechanism comprises a support frame, a first valve plate and a second valve plate, the support frame comprises a long plate and a short plate, the first valve plate and the second valve plate are obliquely arranged between the long plate and the short plate and positioned at two sides of the support frame, and the first valve plate and the second valve plate are both connected with the long plate and the short plate in a sliding manner; the valve rod penetrates through the support frame and extends into a position between the first valve plate and the second valve plate, and the end part of the valve rod is provided with an adjusting assembly which can push the first valve plate and the second valve plate to be propped open towards two sides of the support frame; the valve rod comprises a main valve rod and an adjusting valve rod, the main valve rod is in threaded connection with the valve body, the main valve rod is arranged in a hollow mode, and the adjusting valve rod is arranged in the main valve rod and can rotate.
Description
Technical Field
The invention relates to the technical field of gate valves, in particular to a high-sealing gate valve.
Background
The gate valve is the most important valve at present, and is widely used for the circulation and the stopping of media such as liquid, gas, dust and the like. Generally, the gate valve includes the valve body, and the valve body lower part has feed inlet and discharge gate, and the left end of feed inlet and the right-hand member of discharge gate all have sealed face, and the movive seal complex is equipped with the valve plate that can reciprocate and can not rotate between two sealed faces. Meanwhile, the upper part of the valve plate is connected with a valve rod, and the upper part of the valve rod is connected with a handle through a screw nut mechanism. After the handle rotates, the valve rod is driven to move up and down through the lead screw nut mechanism, then the valve plate moves up and down to seal or open the two sealing inclined planes, and finally the feed port and the discharge port are communicated or cut off.
Currently, with the development of gate valve technology, manufacturers have prepared both sealing surfaces as bevels in order to maintain a better seal. Correspondingly, the valve plate is made into a wedge shape with the small end arranged at the bottom, so that the sealing effect of the gate valve is improved to a greater extent.
However, even after the above improvement, the gate valve has the following drawbacks: the valve plates are worn after being used for a long time, so that the inclination of the valve plates and the sealing inclined planes is changed, the sealing effect is greatly reduced, a double-valve-plate gate valve is also formed in the prior art, the two valve plates are outwards propped open through a spring or an elastic sheet and other structures, the sealing between the valve plates and the valve seat is realized, however, the elastic force of the spring and the elastic sheet can be gradually eliminated along with the lapse of time, and the unstable sealing between the valve plates and the valve seat can be caused; in addition, the upper and lower both ends diameter of wedge valve plate is different to lead to with the disk seat contact back, and the variable quantity that the upper and lower end gradient of wedge valve plate and sealed inclined plane takes place is also different, and all outwards struts the parallel in order to compensate the wearing and tearing volume of valve plate through spring or shell fragment between two valve plates of current two valve plate gate valves, and this must lead to the emergence of the not enough condition of compensation volume to appear between two sealed faces, leads to the leakproofness can not meet the demands.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the high-sealing gate valve which has the function of adjusting the inclination angle of the valve plate in the use process, has the function of compensating different abrasion loss of the upper end and the lower end of a sealing surface, and effectively improves the sealing performance.
In order to realize the purpose, the invention provides the following technical scheme: the utility model provides a high leakproofness gate valve, includes valve body and valve rod, its characterized in that: the valve plate mechanism is connected to the extending end of the valve rod and used for closing and opening a fluid passage in the valve body, the valve plate mechanism comprises a support frame, a first valve plate and a second valve plate, the support frame comprises a long plate and a short plate, the first valve plate and the second valve plate are obliquely arranged between the long plate and the short plate and located on two sides of the support frame, and the first valve plate and the second valve plate are both connected with the long plate and the short plate in a sliding mode; the valve rod penetrates through the support frame and extends into a position between the first valve plate and the second valve plate, an adjusting assembly is arranged at the end part of the valve rod, and the adjusting assembly can slide up and down and can push the first valve plate and the second valve plate to be propped open towards two sides of the support frame; the valve rod includes main valve pole and adjusting valve pole, main valve pole and valve body threaded connection, the inside cavity of main valve pole sets up, the adjusting valve pole sets up in the inside of main valve pole and rotatable, the outer end of main valve pole is provided with big hand wheel, the outer end of adjusting valve pole is provided with little hand wheel.
The invention is further configured to: the adjusting assembly comprises a first adjusting portion and a second adjusting portion, the first adjusting portion is connected with the main valve rod in a rotating mode, a threaded hole is formed in the first adjusting portion, the adjusting valve rod penetrates through the threaded hole to extend out and is connected with the threaded hole in a threaded mode, and the end portion of the adjusting valve rod is connected with the second adjusting portion in a rotating mode.
The invention is further configured to: all be provided with the notch on long slab and the short slab, first valve plate and second valve plate can slide in the notch direction, be provided with spacing hole on the lateral wall of notch, the tip of first valve plate and second valve plate all slides and articulates there is the gag lever post, the gag lever post stretch into in the spacing hole and with spacing hole sliding fit, reset spring has been cup jointed on the gag lever post, the reset spring butt is on the inner wall in the tip of gag lever post and spacing hole.
The invention is further configured to: the first adjusting part and the second adjusting part are of cylindrical structures, and the diameter of the first adjusting part is larger than that of the second adjusting part.
The invention is further configured to: the first valve plate and the second valve plate are arranged in a V-shaped structure.
The invention is further configured to: the valve body is internally provided with a valve cavity which is positioned in the middle of a fluid passage inside the valve body, two sides of the valve cavity are communicated with the fluid passage and are provided with sealing surfaces, and the sealing surfaces on the two sides are obliquely arranged and respectively correspond to the oblique directions of the first valve plate and the second valve plate.
The invention is further configured to: and soft sealing elements are arranged on the sealing surfaces of the first valve plate, the second valve plate and the two sides of the valve cavity.
In conclusion, the invention has the following beneficial effects:
the invention is provided with a valve plate mechanism capable of moving an adjustable valve plate to two sides, a first valve plate and a second valve plate on the valve plate mechanism can slide on a support frame, and a main valve rod and an adjusting valve rod are arranged on the valve rod, wherein the main valve rod can drive a first adjusting part to move up and down, and simultaneously, under the action of the first adjusting part, the valve plate mechanism is also driven to move up and down; the adjusting valve rod is rotated when the main valve rod cannot rotate, the adjusting valve rod is in threaded connection with the first adjusting portion, the first adjusting portion is first and cannot rotate under the limitation of the second valve plate, and therefore the adjusting valve rod can drive the second adjusting portion to be close to the short plate in a proper position.
Compared with the prior art, when the valve plate and the sealing surface are worn, the valve plate and the sealing surface can be adjusted, the spreading amount between the first valve plate and the second valve plate can be adjusted to compensate the wear amount, the first adjusting part and the second adjusting part are independently controlled, the wear amounts with different upper and lower positions can be compensated, namely, the distance between the first adjusting part and the second adjusting part is changed, the inclination angle of the valve plate can be adjusted, the problem that the inclination of the sealing surface cannot be adaptively compensated due to the change in the inclination in the prior art is solved, and the sealing performance of the gate valve can be remarkably improved.
Drawings
FIG. 1 is a schematic cross-sectional view of the internal structure of the valve body according to the present embodiment;
FIG. 2 is an enlarged view of the structure of FIG. 1A;
FIG. 3 is an enlarged view of the structure of FIG. 2B;
fig. 4 is a partial structural schematic diagram of the valve plate mechanism of the embodiment.
Reference numerals are as follows: 1. a valve body; 2. a valve stem; 201. a main valve stem; 202. adjusting the valve rod; 3. a valve plate mechanism; 301. a first valve plate; 302. a second valve plate; 4. a support frame; 401. a long plate; 402. a short plate; 5. an adjustment assembly; 501. a first adjusting section; 502. a second regulating part; 6. a threaded hole; 7. a notch; 8. a limiting hole; 9. a limiting rod; 10. a valve cavity; 11. a sealing surface; 1101. the upper edge of the sealing surface; 1102. a lower edge of the sealing surface; 13. a big hand wheel; 14. a small hand wheel; 15. a return spring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The embodiment discloses a gate valve with high sealing performance, as shown in fig. 1-4, which includes a valve body 1 and a valve rod 2, a valve plate mechanism 3 for closing and opening a fluid passage inside the valve body is connected to an extending end of the valve rod 2, the valve plate mechanism 3 includes a support frame 4, a first valve plate 301 and a second valve plate 302, the support frame 4 includes a long plate 401 and a short plate 402, as shown in fig. 4, the first valve plate 301 and the second valve plate 302 are obliquely arranged between the long plate 401 and the short plate 402 and located at two sides of the support frame 4, the specific oblique direction is a V-shaped structure with a wide top and a narrow bottom, and the first valve plate 301 and the second valve plate 302 are slidably connected with the long plate 401 and the short plate 402; specifically, the long plate 401 and the short plate 402 are both provided with the notch 7, the first valve plate 301 and the second valve plate 302 can slide in the direction of the notch 7, the side wall of the notch 7 is provided with the limiting hole 8, the end portions of the first valve plate 301 and the second valve plate 302 both slide and are hinged with the limiting rod 9, the limiting rod 9 extends into the limiting hole 8 and is in sliding fit with the limiting hole 8, by the above structure, the first valve plate 301 and the second valve plate 302 can be outwardly opened and inwardly closed on the support frame 4, please refer to fig. 3, the limiting rod 9 is sleeved with the return spring 15, the return spring 15 abuts against the end portion of the limiting rod 9 and the inner wall of the limiting hole 8, the return spring 15 is used for returning the first valve plate 301 and the second valve plate 302, and when the first valve plate 301 and the second valve plate 302 are in an outwardly opened state, the return spring 15 contracts, deforms and accumulates energy, so that when the first valve plate 301 and the second valve plate 302 are in a release state, the return spring 15 can drive the first valve plate 301 and the second valve plate 302 to an initial state.
Further, the valve rod 2 penetrates through the support frame 4 and extends into a space between the first valve plate 301 and the second valve plate 302, an adjusting assembly 5 is arranged at the end of the valve rod 2, the adjusting assembly 5 can slide up and down and can push the first valve plate 301 and the second valve plate 302 to be propped open towards two sides of the support frame 4, the valve rod 2 comprises a main valve rod 201 and an adjusting valve rod 202, the main valve rod 201 is in threaded connection with the valve body 1, the main valve rod 201 is hollow, the adjusting valve rod 202 is arranged inside the main valve rod 201 and can rotate, a large hand wheel 13 is arranged at the outer end of the main valve rod 201, and a small hand wheel 14 is arranged at the outer end of the adjusting valve rod 202; the adjusting assembly 5 comprises a first adjusting portion 501 and a second adjusting portion 502, the first adjusting portion 501 is rotatably connected with the main valve rod 201, a threaded hole 6 is formed in the first adjusting portion 501, the adjusting valve rod 202 extends out through the threaded hole 6 and is in threaded connection with the threaded hole 6, and the end portion of the adjusting valve rod 202 is rotatably connected with the second adjusting portion 502. Can drive main valve stem 201 through rotating big hand wheel 13 and rotate, because main valve stem 201 and 1 threaded connection of valve body, consequently main valve stem 201 just can carry out the removal from top to bottom, and drive and rotate the first regulation portion 501 of being connected with main valve stem 201 and reciprocate in step, and be equipped with screw hole 6 on the first regulation portion 501, screw hole 6 and regulating valve stem 202 threaded connection, when there is not external force drive regulating valve stem 202 pivoted, regulating valve stem 202 is the same and follows main valve stem 201 and reciprocate together, the in-process that first regulation portion 501 reciprocated can support with support frame 4 and lean on, thereby realize reciprocating valve plate mechanism 3.
Further, referring to fig. 4, the first adjusting portion 501 and the second adjusting portion 502 are cylindrical structures, the diameter of the first adjusting portion 501 is larger than that of the second adjusting portion 502, a valve cavity 10 is disposed in the valve body 1, the valve cavity 10 is located in the middle of a fluid passage inside the valve body 1, two sides of the valve cavity 10 are communicated with the fluid passage and are provided with sealing surfaces 11, the sealing surfaces 11 on the two sides are arranged in an inclined manner and respectively correspond to the inclined directions of the first valve plate 301 and the second valve plate 302, when the support frame 4 reaches the bottom of the valve cavity 10, that is, after the short plate 402 contacts the bottom, and the main valve rod 201 is rotated to drive the first adjusting portion 501 to descend, the first valve plate 301 and the second valve plate 302 will abut against the outer circumferential surface of the first adjusting portion 501, and as the first adjusting portion 501 descends continuously, the first valve plate 301 and the second valve plate 302 are gradually expanded towards two sides and finally abut against the sealing surfaces 11 on two sides of the valve cavity 10. After long-time use, because the valve plate is the slope setting, its upper and lower both ends diameter is different and leads to contacting with the sealed face after, the wearing and tearing volume of the upper and lower part of valve plate and sealed face is different, therefore the valve plate need adjust inclination, only need rotate adjustment valve rod 202 this moment, because it and screw hole threaded connection, and first regulating part 501 can't rotate, so second regulating part 502 just can remove in the direction of keeping away from first regulating part 501, when second regulating part 502 kept away from first regulating part 501, just make the downside of valve plate strut, also changed the original inclination of first valve plate 501 and second valve plate 502, can compensate sealed face upper edge 1101 and sealed face lower edge 1102 different wearing and tearing volume, sealing effect has been promoted.
Further, the first valve plate 301, the second valve plate 302 and the sealing surfaces 11 on both sides of the valve cavity 10 are all provided with soft sealing elements. The soft sealing element can be made of wear-resistant rubber materials, and sealing performance can be improved.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalents, improvements and the like made within the design concept of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a high leakproofness gate valve, includes valve body (1) and valve rod (2), its characterized in that: the valve plate mechanism (3) used for closing and opening a fluid passage in the valve body is connected to the extending end of the valve rod (2), the valve plate mechanism (3) comprises a support frame (4), a first valve plate (301) and a second valve plate (302), the support frame (4) comprises a long plate (401) and a short plate (402), the first valve plate (301) and the second valve plate (302) are obliquely arranged between the long plate (401) and the short plate (402) and located on two sides of the support frame (4), and the first valve plate (301) and the second valve plate (302) are in sliding connection with the long plate (401) and the short plate (402); the valve rod (2) penetrates through the support frame (4) and extends into a position between the first valve plate (301) and the second valve plate (302), an adjusting assembly (5) is arranged at the end part of the valve rod (2), and the adjusting assembly (5) can slide up and down and can push the first valve plate (301) and the second valve plate (302) to be unfolded towards two sides of the support frame (4); the valve rod (2) comprises a main valve rod (201) and an adjusting valve rod (202), the main valve rod (201) is in threaded connection with the valve body (1), the main valve rod (201) is hollow, the adjusting valve rod (202) is arranged inside the main valve rod (201) and can rotate, a large hand wheel (13) is arranged at the outer end of the main valve rod (201), and a small hand wheel (14) is arranged at the outer end of the adjusting valve rod (202).
2. The gate valve of claim 1, wherein: the adjusting assembly (5) comprises a first adjusting portion (501) and a second adjusting portion (502), the first adjusting portion (501) is connected with the main valve rod (201) in a rotating mode, a threaded hole (6) is formed in the first adjusting portion (501), the adjusting valve rod (202) penetrates through the threaded hole (6) to stretch out and is in threaded connection with the threaded hole (6), and the end portion of the adjusting valve rod (202) is connected with the second adjusting portion (502) in a rotating mode.
3. A gate valve with high sealing performance according to claim 1, wherein: all be provided with notch (7) on long board (401) and short slab (402), first valve plate (301) and second valve plate (302) can slide in notch (7) direction, be provided with spacing hole (8) on the lateral wall of notch (7), the tip of first valve plate (301) and second valve plate (302) all slides and articulates there is gag lever post (9), gag lever post (9) stretch into in spacing hole (8) and with spacing hole (8) sliding fit, reset spring (15) have been cup jointed on gag lever post (9), reset spring (15) butt is on the inner wall of the tip of gag lever post (9) and spacing hole (8).
4. A gate valve with high sealing performance according to claim 2, wherein: the first adjusting part (501) and the second adjusting part (502) are cylindrical structures, and the diameter of the first adjusting part (501) is larger than that of the second adjusting part (502).
5. A gate valve with high sealing performance according to claim 1, wherein: the first valve plate (301) and the second valve plate (302) are arranged in a V-shaped structure.
6. The gate valve of claim 1, wherein: the valve comprises a valve body (1), wherein a valve cavity (10) is arranged in the valve body (1), the valve cavity (10) is located in the middle of a fluid passage in the valve body (1), two sides of the valve cavity (10) are communicated with the fluid passage and are provided with sealing surfaces (11), and the sealing surfaces (11) on the two sides are obliquely arranged and correspond to the oblique directions of a first valve plate (301) and a second valve plate (302) respectively.
7. The gate valve of claim 6, wherein: and soft sealing elements are arranged on the first valve plate (301), the second valve plate (302) and the sealing surfaces (11) on two sides of the valve cavity (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211287208.7A CN115539663A (en) | 2022-10-20 | 2022-10-20 | High leakproofness gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211287208.7A CN115539663A (en) | 2022-10-20 | 2022-10-20 | High leakproofness gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115539663A true CN115539663A (en) | 2022-12-30 |
Family
ID=84734951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211287208.7A Pending CN115539663A (en) | 2022-10-20 | 2022-10-20 | High leakproofness gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115539663A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117432825A (en) * | 2023-12-19 | 2024-01-23 | 福建耐源阀门有限公司 | Soft sealing gate valve |
-
2022
- 2022-10-20 CN CN202211287208.7A patent/CN115539663A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117432825A (en) * | 2023-12-19 | 2024-01-23 | 福建耐源阀门有限公司 | Soft sealing gate valve |
| CN117432825B (en) * | 2023-12-19 | 2024-03-12 | 福建耐源阀门有限公司 | Soft sealing gate valve |
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