CN115183012B

CN115183012B - Gate valve with good sealing performance

Info

Publication number: CN115183012B
Application number: CN202211112940.0A
Authority: CN
Inventors: 林阿龙; 张志亮
Original assignee: Shandong Tiancheng Valve Manufacturing Co ltd
Current assignee: Shandong Tiancheng Valve Manufacturing Co ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2023-03-24
Anticipated expiration: 2042-09-14
Also published as: CN115183012A

Abstract

The invention discloses a gate valve with good sealing performance, which relates to the technical field of valves and comprises a valve body and a valve seat arranged at the top end of the valve body, wherein a lifting assembly is arranged at the top end of the valve seat, a flashboard assembly matched with the valve body is connected to the bottom end of the lifting assembly, a guide assembly connected with the flashboard assembly is fixed on the inner side wall of the valve seat, symmetrical semicircular plates are fixed at the top end of the flashboard assembly, the arc-shaped side walls of the semicircular plates are attached to the inner side of the valve seat, the flashboard assembly comprises a flashboard connected with the bottom end of the lifting assembly and a sealing assembly arranged on one side of the flashboard, the sealing assembly is positioned on one side of the water inlet end of the valve body, and the sealing assembly comprises a sealing plate connected with the side walls of the flashboard. The sealing device can seal the valve body through the action of water pressure, the higher the water pressure in the valve body is, the larger the acting force of the extrusion assembly on the abutting assembly is, and the higher the sealing strength between the sealing strip and the inner wall of the valve body is.

Description

Gate valve with good sealing performance

Technical Field

The invention relates to the technical field of valves, in particular to a gate valve with good sealing performance.

Background

The gate valve is a shutter, the movement direction of the shutter is perpendicular to the fluid direction, the gate valve can only be fully opened and fully closed, and cannot be adjusted and throttled, and the gate valve is sealed by the contact of a valve seat and the shutter.

The utility model discloses a chinese utility model patent that current publication number is CN214222047U discloses a gate valve that leakproofness is good, including valve body and flashboard, the inside bottom fixedly connected with separator of valve body, two sets of sealed cushions are installed to the outer end of separator, two sets of montants of the inside bottom fixedly connected with of valve body, it is two sets of the outside sliding connection of montant has the sliding sleeve, and is two sets of the upper end fixedly connected with socket of sliding sleeve is two sets of the cover is equipped with reset spring between the inner wall that the outside of montant is located the valve body and the sliding sleeve.

However, the gate valve has the following defects that the device performs the closing operation of the gate plate through the sealing cooperation of the gate plate and the socket, if the gate plate is in a loose state in the closing state, the bottom end of the gate plate can be lifted upwards under the action of the supporting spring to form a gap, and the sealing performance of the whole valve is affected.

Disclosure of Invention

The invention aims to provide a gate valve with good sealing performance so as to solve the technical problems in the prior art.

The invention provides a gate valve with good sealing performance, which comprises a valve body and a valve seat arranged at the top end of the valve body, wherein a lifting assembly is arranged at the top end of the valve seat, the bottom end of the lifting assembly is connected with a flashboard assembly matched with the valve body, a guide assembly connected with the flashboard assembly is fixed on the inner side wall of the valve seat, a symmetrical semicircular plate is fixed at the top end of the flashboard assembly, the arc-shaped side wall of the semicircular plate is attached to the inner side of the valve seat, the flashboard assembly comprises a flashboard connected with the bottom end of the lifting assembly and a sealing assembly arranged on one side of the flashboard, the sealing assembly is positioned on one side of the water inlet end of the valve body, the sealing assembly comprises a sealing plate connected with the side wall of the flashboard, one side of the sealing plate is provided with a side notch, an extrusion assembly is slidably arranged in the side notch, the outer wall of the circumference of the bottom end of the sealing plate is provided with an arc-shaped groove, a sealing strip is embedded in the arc-shaped groove, a plurality of abutting assemblies fixedly connected with the sealing strip are arranged in the arc-shaped groove, and the top end of the abutting assembly extends into the side notch until the side notch to be contacted with the outer side wall of the extrusion assembly.

Furthermore, the extrusion subassembly includes slidable mounting in the intraoral piston block of side groove, be provided with on the lateral wall of piston block with support the circular cone inclined plane of tight subassembly top contact, the mounting groove has been seted up on the piston block inside wall, the inside wall of mounting groove with be fixed with elastic connection mechanism between the side groove intraoral wall.

Furthermore, the elastic connection mechanism comprises a sleeve fixedly connected with the piston block, a loop bar is movably inserted in the sleeve, one end of the loop bar, which is far away from the piston block, is fixedly connected with the inner part of the side groove, and a first spring is sleeved on the sleeve and the loop bar.

Furthermore, support tight subassembly including setting up support tight strip in the arc wall, support tight strip the extrados with sealing strip fixed connection, the inboard of supporting tight strip is fixed with the slide bar, the slide bar is kept away from support tight strip one end extends to in the side slot, the top of slide bar be fixed with the inclined plane piece of circular cone inclined plane laminating, the slide bar is close to the one end of inclined plane piece is fixed with the spacing ring, the spacing ring below is provided with the cover and is established second spring on the slide bar, the fixed slot has been seted up on the inside wall of side slot, the second spring sets up in the fixed slot.

Furthermore, a guide block is fixed on one side, close to the water inlet end of the valve body, of the top end of the flashboard, and a guide inclined plane is formed in the side wall of the bottom end of the guide block.

Further, the lifting assembly is installed including rotating lead screw on the disk seat, in the lead screw thread grafting flashboard, the top of lead screw is fixed with the pivot, the top of pivot is fixed with the carousel.

Furthermore, the direction subassembly is including installing gib block on the disk seat inner wall, the gib block lateral wall with the laminating of flashboard lateral wall, the top of flashboard is fixed with the guide bar, the top of flashboard seted up with the perpendicular hole of guide bar adaptation, erect downthehole being provided with the cover and establish third spring on the guide bar.

Furthermore, both ends of the valve body are provided with connecting flanges, and the connecting flanges are provided with positioning screw holes.

Compared with the prior art, the invention has the beneficial effects that:

(1) According to the invention, the extrusion assembly can move towards the side notch under the action of water pressure and performs extrusion action on the top end of the abutting assembly, so that the abutting assembly expands towards the outer side of the sealing plate and drives the sealing strip to expand outwards until the sealing strip is contacted with the inner wall of the valve body and abuts tightly, when the water pressure in the valve body is higher, the acting force of the extrusion assembly on the abutting assembly is larger, and the sealing strength between the sealing strip and the inner wall of the valve body is higher.

(2) According to the sealing device, the elastic connecting mechanism can be compressed by the piston block under the action of water pressure, the top end of the abutting assembly is extruded by the conical inclined plane on the piston block, the purpose of expanding and sealing the sealing strip driven by the abutting assembly is achieved, the extrusion acting force generated by the piston block can be converted into the pushing-out acting force of the sliding rod through the inclined plane block, the purpose of pushing out the sliding rod and the abutting strip can be further achieved, the limiting ring can compress the second spring in the pushing-out process of the abutting strip, and the abutting strip and the sealing strip can be driven to reset after the flashboard is lifted and opened by the aid of the reacting force of the second spring.

(3) According to the invention, the guide inclined plane on the guide block can guide water flow after the flashboard in the valve body is opened, so that water resistance is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a partially sectioned perspective view illustrating the structure of the present invention;

FIG. 3 is a first perspective view of the shutter assembly of the present invention;

FIG. 4 is a second perspective view of the shutter assembly of the present invention;

FIG. 5 is a schematic cross-sectional view of a seal assembly according to the present invention;

FIG. 6 is an enlarged schematic view of the structure at A in FIG. 5;

FIG. 7 is a schematic structural diagram of the fastening assembly of the present invention.

Reference numerals:

1. a valve body; 2. a valve seat; 3. a shutter assembly; 31. a shutter plate; 32. a seal assembly; 321. a sealing plate; 322. a side slot opening; 323. an extrusion assembly; 3231. a piston block; 3232. a conical bevel; 3233. mounting grooves; 3234. a sleeve; 3235. a loop bar; 3236. a first spring; 324. a tightening assembly; 3241. a slide bar; 3242. a tightening strip; 3243. fixing grooves; 3244. a second spring; 3245. a limiting ring; 3246. a bevel block; 325. a sealing strip; 326. an arc-shaped slot; 33. a guide block; 34. a material guiding inclined plane; 4. a lifting assembly; 41. a screw rod; 42. a rotating shaft; 43. a turntable; 5. a guide assembly; 51. a guide strip; 52. a guide bar; 53. a third spring; 54. vertical holes; 6. a semicircular plate.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

Referring to fig. 1 to 7, an embodiment of the present invention provides a gate valve with good sealing performance, including a valve body 1 and a valve seat 2 installed on a top end of the valve body 1, a lifting assembly 4 is installed on a top end of the valve seat 2, a gate plate assembly 3 adapted to the valve body 1 is connected to a bottom end of the lifting assembly 4, a guide assembly 5 connected to the gate plate assembly 3 is fixed on an inner side wall of the valve seat 2, the gate plate assembly 3 can be driven to perform lifting operation by the guiding action of the lifting assembly 4 in cooperation with the guide assembly 5, so as to achieve the purpose of opening and closing the valve body 1, a symmetrical semicircular plate 6 is fixed on a top end of the gate plate assembly 3, a sealing ring is embedded on a circumferential side wall of the semicircular plate 6, an arc-shaped side wall of the semicircular plate 6 is attached to an inner side of the valve seat 2, the semicircular plate 6 can perform sealing operation between the valve seat 2 and the valve body 1, the gate plate assembly 3 includes a gate plate 31 connected to the bottom end of the lifting assembly 4 and a sealing assembly 32 installed on one side of the gate plate 31, the gate plate 31 can seal the valve body 1, the sealing assembly 32 is located on one side of the water inlet end of the valve body 1, the sealing assembly 32 comprises a sealing plate 321 connected with the side wall of the gate plate 31, one side of the sealing plate 321 is provided with a side notch 322, an extrusion assembly 323 is slidably mounted in the side notch 322, an arc-shaped groove 326 is formed in the outer circumferential wall of the bottom end of the sealing plate 321, a sealing strip 325 is embedded in the arc-shaped groove 326, a plurality of abutting assemblies 324 fixedly connected with the sealing strip 325 are arranged in the arc-shaped groove 326, the top ends of the abutting assemblies 324 extend into the side notch 322 until contacting with the outer side wall of the extrusion assembly 323, the extrusion assembly 323 can move towards the side notch 322 under the action of water pressure and extrude the top end of the abutting assembly 324, so that the abutting assemblies 324 expand towards the outer side of the sealing plate 321, and drive the sealing strip 325 to expand outwards until contacting with the inner wall of the valve body 1 and abut tightly, when the water pressure in the valve body 1 is higher, the acting force of the pressing component 323 on the abutting component 324 is larger, and the sealing strength between the sealing strip 325 and the inner wall of the valve body 1 is higher.

Specifically, the extrusion component 323 comprises a piston block 3231 which is slidably mounted in the side notch 322, a conical inclined surface 3232 which is in contact with the top end of the abutting component 324 is arranged on the side wall of the piston block 3231, a mounting groove 3233 is formed in the inner side wall of the piston block 3231, an elastic connection mechanism is fixed between the inner side wall of the mounting groove 3233 and the inner side wall of the side notch 322, the piston block 3231 can compress the elastic connection mechanism under the action of water pressure, the top end of the abutting component 324 is extruded by using the conical inclined surface 3232 on the piston block 3231, and the purpose of expanding and sealing operation of the abutting component 324 driving the sealing strip 325 is achieved.

Specifically, the elastic connection mechanism comprises a sleeve 3234 fixedly connected with the piston block 3231, a sleeve rod 3235 is movably inserted into the sleeve 3234, one end, far away from the piston block 3231, of the sleeve 3235 is fixedly connected with the inside of the side notch 322, a first spring 3236 is sleeved on the sleeve 3234 and the sleeve 3235, the piston block 3231 can be elastically supported through the sleeve 3234, the sleeve 3235 and the first spring 3236, and the piston block 3231 can be conveniently reset.

Specifically, the abutting assembly 324 comprises an abutting strip 3242 arranged in an arc-shaped groove 326, an outer arc surface of the abutting strip 3242 is fixedly connected with a sealing strip 325, a sliding rod 3241 is fixed on the inner side of the abutting strip 3242, one end, far away from the abutting strip 3242, of the sliding rod 3241 extends into a side notch 322, a slope block 3246 attached to a conical slope 3232 is fixed at the top end of the sliding rod 3241, a limiting ring 3245 is fixed at one end, close to the slope block 3246, of the sliding rod 3241, a second spring 3244 sleeved on the sliding rod 3241 is arranged below the limiting ring 3245, a fixing groove 3243 is formed in the inner side wall of the side notch 322, the second spring 3244 is arranged in the fixing groove 3243, the pressing force generated by the piston block 3231 can be converted into the pushing-out force of the sliding rod 3241 through the slope block 3246, and the working purpose of pushing out the sliding rod 3241 and the abutting strip 3242 can be achieved, wherein the limiting ring 3245 can compress the second spring 3244 in the pushing-out process, and the abutting strip 3242 can be driven to rise and reset after the sealing strip 3231 is opened.

Specifically, a guide block 33 is fixed to one side of the top end of the gate plate 31 close to the water inlet end of the valve body 1, a guide inclined surface 34 is formed in the side wall of the bottom end of the guide block 33, and water flow can be guided by the guide inclined surface 34 on the guide block 33 after the gate plate 31 in the valve body 1 is opened, so that water resistance is reduced.

Specifically, lifting unit 4 is including rotating the lead screw 41 of installing on disk seat 2, and in lead screw 41 screw grafting flashboard 31, the top of lead screw 41 is fixed with pivot 42, and the top of pivot 42 is fixed with carousel 43, can drive lead screw 41 commentaries on classics through manual rotation carousel 43, and the spacing guide effect of cooperation guide unit 5 can realize the lift work purpose of flashboard 31.

Specifically, guide assembly 5 is including installing guide strip 51 on the inner wall of valve seat 2, guide strip 51 lateral wall and the laminating of flashboard 31 lateral wall, the top of flashboard 31 is fixed with guide bar 52, the top of flashboard 31 is seted up with the perpendicular hole 54 of guide bar 52 adaptation, be provided with the third spring 53 that the cover was established on guide bar 52 in the perpendicular hole 54, can carry out the ascending guide effect of vertical side to flashboard 31 through guide strip 51 and guide bar 52, third spring 53 can cooperate guide bar 52 to increase the structural connection intensity between lift subassembly 4 and the flashboard subassembly 3.

Specifically, both ends of the valve body 1 are provided with connecting flanges, positioning screw holes are formed in the connecting flanges, and the mounting and connecting work of the valve body 1 can be achieved through the connecting flanges and the positioning screw holes.

The specific working method comprises the following steps: the screw rod 41 can be driven to rotate by manually rotating the turntable 43, the purpose of lifting and lowering the flashboard 31 can be achieved by matching with the limiting and guiding effect of the guiding component 5, when the flashboard 31 is closed, the extrusion component 323 can move towards the side notch 322 under the action of water pressure, the piston block 3231 can compress the elastic connecting mechanism under the action of water pressure, the top end of the abutting component 324 is extruded by utilizing the conical inclined surface 3232 on the piston block 3231, the abutting component 324 expands towards the outer side of the sealing plate 321, the inclined surface 3246 can convert the extrusion acting force generated by the piston block 3231 into the pushing-out acting force of the sliding rod 3241, the working purpose of pushing out the sliding rod 3241 and the abutting strip 3242 can be achieved, the sealing strip 325 is driven to expand outwards until the sealing strip is contacted with and abutted against the inner wall of the valve body 1, the acting force of the extrusion component 323 on the abutting component 324 is larger when the water pressure in the valve body 1 is higher, and the sealing strength between the sealing strip 325 and the inner wall of the valve body 1 is higher.

Claims

1. The utility model provides a gate valve that leakproofness is good, includes valve body (1) and installs disk seat (2) on valve body (1) top, lifting unit (4) are installed on disk seat (2) top, the bottom of lifting unit (4) be connected with flashboard subassembly (3) of valve body (1) adaptation, be fixed with on the inside wall of disk seat (2) with guide assembly (5) that flashboard subassembly (3) are connected, its characterized in that: the top end of the gate plate component (3) is fixed with symmetrical semicircular plates (6), the arc-shaped side wall of each semicircular plate (6) is attached to the inner side of the valve seat (2), the gate plate component (3) comprises a gate plate (31) connected with the bottom end of the lifting component (4) and a sealing component (32) installed on one side of the gate plate (31), the sealing component (32) is located on one side of the water inlet end of the valve body (1), the sealing component (32) comprises a sealing plate (321) connected with the side wall of the gate plate (31), one side of the sealing plate (321) is provided with a side notch (322), an extrusion component (323) is installed in the side notch (322) in a sliding mode, an arc-shaped groove (326) is formed in the circumferential outer wall of the bottom end of the sealing plate (321), an embedded sealing strip (325) is arranged in the arc-shaped groove (326), a plurality of abutting components (324) fixedly connected with the sealing strip (325) are arranged in the arc-shaped groove (326), the top end of the abutting components (324) extends into the side notch (322) until the side notch (322) contacts with the extrusion component (323), the outer side wall of the piston block (3231) is provided with an inclined surface (3232) of the piston block (32322), the piston block (3231) is provided with an installation groove (3233) on the inner side wall, and an elastic connection mechanism is fixed between the inner side wall of the installation groove (3233) and the inner side wall of the side notch (322).

2. The gate valve of claim 1, wherein the gate valve has a good sealing property: the elastic connecting mechanism comprises a sleeve (3234) fixedly connected with the piston block (3231), a sleeve rod (3235) is movably inserted into the sleeve (3234), one end, far away from the piston block (3231), of the sleeve rod (3235) is fixedly connected with the inside of the side notch (322), and a first spring (3236) is sleeved on the sleeve (3234) and the sleeve rod (3235).

3. The gate valve of claim 2, wherein: support tight subassembly (324) including setting up support tight strip (3242) in arc wall (326), support the extrados of tight strip (3242) with sealing strip (325) fixed connection, the inboard of supporting tight strip (3242) is fixed with slide bar (3241), slide bar (3241) are kept away from the one end of supporting tight strip (3242) extends to in side notch (322), the top of slide bar (3241) be fixed with inclined plane piece (3246) of circular cone inclined plane (3232) laminating, slide bar (3241) are close to the one end of inclined plane piece (3246) is fixed with spacing ring (3245), spacing ring (3245) below is provided with the cover and establishes second spring (3244) on slide bar (3241), fixed slot (3243) have been seted up on the inside wall of side notch (322), second spring (3244) set up in fixed slot (3243).

4. The gate valve of claim 3, wherein: one side that flashboard (31) top is close to valve body (1) end of intaking is fixed with guide block (33), seted up guide inclined plane (34) on the bottom lateral wall of guide block (33).

5. The gate valve of claim 1, wherein: lifting unit (4) are installed including rotating lead screw (41) on valve seat (2), in lead screw (41) screw grafting flashboard (31), the top of lead screw (41) is fixed with pivot (42), the top of pivot (42) is fixed with carousel (43).

6. The gate valve of claim 2, wherein: guide assembly (5) are including installing guide strip (51) on disk seat (2) inner wall, guide strip (51) lateral wall with flashboard (31) lateral wall laminating, the top of flashboard (31) is fixed with guide bar (52), the top of flashboard (31) seted up with perpendicular hole (54) of guide bar (52) adaptation, be provided with in perpendicular hole (54) and establish the cover third spring (53) on guide bar (52).

7. The gate valve of claim 1, wherein: and connecting flanges are arranged at two ends of the valve body (1), and positioning screw holes are formed in the connecting flanges.