CN212899798U

CN212899798U - Small-size antiseep gate valve

Info

Publication number: CN212899798U
Application number: CN202021283526.2U
Authority: CN
Inventors: 王群
Original assignee: Wuhu Bowande Steam Power Technology Co ltd
Current assignee: Wuhu Bowande Steam Power Technology Co ltd
Priority date: 2020-07-04
Filing date: 2020-07-04
Publication date: 2021-04-06
Anticipated expiration: 2030-07-04

Abstract

The utility model discloses a small-size antiseep gate valve, its technical scheme main points are: the valve comprises a valve body, a valve cover is fixedly arranged at the upper end of the valve body, a valve core is movably arranged in the valve body, the valve core comprises a flashboard, a cushion cover and a fixed plate, the cushion cover is sleeved at the outer end of the flashboard, the fixed plate is fixedly arranged at the upper end of the inner wall of the flashboard, a gasket is fixedly arranged in the valve body corresponding to the position of the bottom of the valve core, an annular groove is formed in the upper end of the gasket corresponding to the position of the lower end of the valve core, a lead screw is fixedly arranged in the middle of the valve core and penetrates through the valve body and the valve cover, the upper end of the lead screw is fixedly connected with; the utility model discloses increase a pad cover between valve body and case, can reduce the difficult degree of valve body, case processing, reduced because of the risk of revealing of the loss production of case and valve body, improved the life of product.

Description

Small-size antiseep gate valve

Technical Field

The utility model belongs to the technical field of the gate valve technique and specifically relates to a small-size antiseep gate valve.

Background

The gate valve is a shutter, the movement direction of the shutter is vertical to the fluid direction, and the gate valve can only be fully opened and fully closed and cannot be adjusted and throttled. The gate valve seals through disk seat and flashboard contact, and the sealed face can build up welding metal material in order to increase the wearability usually, like stainless steel etc. the flashboard has rigidity flashboard and elasticity flashboard, according to the difference of flashboard, and the gate valve divide into rigidity gate valve and elasticity gate valve.

In the design of non-casting type ultra-small gate valves (the diameter of the valve core is not more than 5mm), in order to prevent leakage in the rotating process of the valve core and the valve body, the valve core and the valve body are generally processed into cones, so that the processing cost of the gate valve is improved, and meanwhile, in the process of multiple opening and closing rotation, the valve core and the valve body are subjected to multiple relative friction, so that loss is inevitably caused, and the leakage phenomenon can occur after long-time use.

SUMMERY OF THE UTILITY MODEL

To the problem of mentioning in the background art, the utility model aims at providing a small-size antiseep gate valve to the gate valve processing cost who mentions in solving the background art is high and produces the problem of revealing easily.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a small-sized anti-leakage gate valve comprises a valve body, wherein a water inlet and a water outlet are fixedly arranged at the left end and the right end of the valve body, a valve cover is fixedly arranged at the upper end of the valve body, a valve core is movably arranged in the valve body, the cross section of the valve core is circular, the valve core comprises a flashboard, a cushion cover and a fixed plate, the cushion cover is sleeved at the outer end of the flashboard, the fixed plate is fixedly arranged at the upper end of the inner wall of the flashboard, the longitudinal section of the lower end of the valve core is trapezoidal, a gasket is fixedly arranged at the position, corresponding to the bottom of the valve core, in the valve body, the upper end of the gasket is provided with an annular groove, the longitudinal section of the annular groove is trapezoidal, a lead screw is fixedly arranged at the middle part of the valve core, the lead screw penetrates through the, the sealing sleeve is sleeved at the outer end of the screw rod.

Furthermore, the valve body is made of nodular cast iron, and the inside and the outside of the valve body are coated by nontoxic powder epoxy resin.

Further, the fixed joint platform that is provided with in upper end of valve body, the lower extreme of valve gap is provided with the joint groove corresponding to the fixed joint of position department of joint platform, and the joint platform is connected with the joint groove is mutually supported, and the fixed sealing ring that is provided with in middle part in joint platform and joint groove, the material of sealing ring are butadiene acrylonitrile rubber.

Furthermore, the cushion cover is made of polytetrafluoroethylene.

Furthermore, the screw rod is in threaded connection with the fixing plate.

Furthermore, three sealing rings are fixedly arranged inside the sealing sleeve, wherein two sealing rings are fixedly arranged at the outer ends tightly attached to the screw rod, and the other sealing ring is fixedly arranged at the inner wall tightly attached to the valve cover.

Furthermore, the handle is fixedly connected with the screw rod through an upper nut.

To sum up, the utility model discloses mainly have following beneficial effect:

1. the utility model discloses a, be circular through the cross section that sets up the case, increase a pad cover between valve body and case, can reduce the difficult degree of valve body, case processing, set up the material of pad cover simultaneously and be polytetrafluoroethylene, because polytetrafluoroethylene is the material that can compress, the requirement in the aspect of the precision of design and processing valve body and case is very reduced like this, and the cost of parts machining also correspondingly reduces.

2. The utility model discloses a, through increasing a pad cover between valve body and case, can reduce the loss that valve body and case brought when rotating because frictional force to a great extent, reduce the risk of revealing that produces because of the loss of case and valve body, improve the life of product.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a main sectional view of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is an enlarged view of a portion B of FIG. 1;

fig. 4 is a partially enlarged schematic view of a portion C in fig. 1.

In the figure: 1. a valve body; 101. a clamping table; 102. a water inlet; 103. a water outlet; 2. a valve cover; 201. a clamping groove; 3. a valve core; 301. a shutter plate; 302. a cushion cover; 303. a fixing plate; 4. a gasket; 401. an annular groove; 5. a screw rod; 6. a handle; 7. a compression nut; 8. sealing sleeves; 9. a seal ring; 10. a seal ring; 11. and (6) screwing a nut.

Detailed Description

In order to make the objects and technical solutions of the present invention clear and fully described, and the advantages thereof more clearly understood, the embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," "fifth," and "sixth" 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 is to 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

Referring to fig. 1-4, a small-sized anti-leakage gate valve comprises a valve body 1, a water inlet 102 and a water outlet 103 are fixedly arranged at the left and right ends of the valve body 1, a valve cover 2 is fixedly arranged at the upper end of the valve body 1, a valve core 3 is movably arranged in the valve body 1, the valve core 3 can move up and down under the drive of a screw rod 5, the cross section of the valve core 3 is circular, the valve core 3 comprises a gate plate 301, a cushion cover 302 and a fixing plate 303, the cushion cover 302 is sleeved at the outer end of the gate plate 301, the cushion cover 302 is tightly attached to the gate plate 301, one end of the fixing plate 303 is fixedly arranged at the upper end of the inner wall of the gate plate 301, the other end of the fixing plate 303 is in threaded connection with the screw rod 5, the longitudinal section of the lower end of the valve core 3 is trapezoidal, a gasket 4 is fixedly arranged at a position in the valve body, when closing the gate valve, the bottom of case 3 and annular groove 401 can closely laminate, through setting up annular groove 401, when case 3 and annular groove 401 closely laminate, can improve the leakproofness of gate valve, the fixed lead screw 5 that is provided with in middle part of case 3, lead screw 5 runs through valve body 1 and valve gap 2, the upper end and the handle 6 fixed connection of lead screw 5, can drive lead screw 5 through rotating handle 6 and rotate, the fixed gland nut 7 that is provided with in upper end of valve gap 2, gland nut 7 can fix valve gap 2 in the upper end of valve body 1, the inside of valve gap 2 is provided with seal cover 8 corresponding to gland nut 7's position department is fixed, seal cover 8 can completely cut off outside air, prevent that the air from getting into the inside of valve body 1, seal cover 8 cover is established in the outer end of lead screw 5.

Referring to fig. 1, the valve body 1 is made of nodular cast iron, the weight of the valve body is reduced by about 20-30% compared with the weight of a traditional gate valve, the valve body is convenient to install and maintain, in order to improve the corrosion resistance of the valve body 1, the inside and the outside of the valve body 1 are coated with nontoxic powder epoxy resin, and meanwhile, the quality of water supply is guaranteed.

Referring to fig. 1 and 2, in order to improve the sealing performance between the valve body 1 and the valve cover 2, a clamping table 101 is fixedly arranged at the upper end of the valve body 1, a clamping groove 201 is fixedly arranged at the position, corresponding to the clamping table 101, of the lower end of the valve cover 2, so that the clamping table 101 and the clamping groove 201 can be connected in a matched manner, a sealing ring 10 is fixedly arranged in the middle of the clamping table 101 and the clamping groove 201, the sealing ring 10 is made of nitrile rubber, and the nitrile rubber has good wear resistance, aging resistance and air tightness.

Referring to fig. 1 and 4, the material of the cushion cover 302 is ptfe, which has good high temperature resistance and wear resistance, and since ptfe is a compressible material, the requirements on the precision of designing and machining the valve body 1 and the valve core 3 are greatly reduced, and the cost of machining parts is correspondingly reduced.

Referring to fig. 1, in order to ensure the connection stability of the screw rod 5 and the valve core 3, a screw thread connection between the screw rod 5 and the fixing plate 303 is provided.

Referring to fig. 1 and 3, in order to improve the sealing performance of the gate valve, three sealing rings 9 are fixedly arranged inside a sealing sleeve 8, wherein two sealing rings 9 are fixedly arranged close to the outer end of the screw rod 5, and the other sealing ring 9 is fixedly arranged close to the inner wall of the valve cover 2, so that the sealing performance of the gate valve can be effectively improved.

Referring to fig. 1, in order to ensure the stability of the connection between the handle 6 and the screw rod 5, the handle 6 and the screw rod 5 are fixedly connected through an upper nut 11.

When the utility model is used, after the gate valve is installed by an operator, if the gate valve needs to be opened, water flows, the handle 6 is rotated, the handle 6 drives the screw rod 5 to rotate, the screw rod 5 drives the fixing plate 303 to rotate, and simultaneously drives the valve core 3 to rotate, at the moment, the valve core 3 can move upwards, when the lifting height of the valve core 3 is equal to the drift diameter of the valve body 1, namely when the valve core 3 rises to the top, the fluid channel is completely unblocked, and water flows to the water outlet 103 along the water inlet 102, so that the gate valve is opened; when the gate valve needs to be closed, the handle 6 is rotated reversely, the handle 6 drives the screw rod 5 to rotate, the screw rod 5 drives the fixing plate 303 to rotate, the valve core 3 is driven to rotate simultaneously, the valve core 3 can move downwards at the moment, when the descending height of the valve core 3 is equal to the drift diameter of the valve body 1, namely the valve core 3 descends to the bottommost part, the fluid channel is completely closed, water flow cannot pass through the gate valve at the moment, and the gate valve is closed.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a small-size antiseep gate valve, includes valve body (1), its characterized in that: the water inlet (102) and the water outlet (103) are fixedly arranged at the left end and the right end of the valve body (1), the valve cover (2) is fixedly arranged at the upper end of the valve body (1), the valve core (3) is movably arranged in the valve body (1), the cross section of the valve core (3) is circular, the valve core (3) comprises a flashboard (301), a cushion cover (302) and a fixing plate (303), the cushion cover (302) is sleeved at the outer end of the flashboard (301), the fixing plate (303) is fixedly arranged at the upper end of the inner wall of the flashboard (301), the longitudinal section of the lower end of the valve core (3) is trapezoidal, a gasket (4) is fixedly arranged at the position, corresponding to the bottom of the valve core (3), of the inner part of the valve body (1), an annular groove (401) is formed at the position, corresponding to the lower end of the valve core (3), the longitudinal section of the annular groove (, the valve is characterized in that a lead screw (5) is fixedly arranged in the middle of the valve core (3), the lead screw (5) penetrates through the valve body (1) and the valve cover (2), the upper end of the lead screw (5) is fixedly connected with a handle (6), a compression nut (7) is fixedly arranged at the upper end of the valve cover (2), a sealing sleeve (8) is fixedly arranged in the valve cover (2) corresponding to the position of the compression nut (7), and the outer end of the lead screw (5) is sleeved with the sealing sleeve (8).

2. A small-sized anti-leakage gate valve according to claim 1, wherein: the valve body (1) is made of nodular cast iron, and the inside and the outside of the valve body (1) are coated by nontoxic powder epoxy resin.

3. A small-sized anti-leakage gate valve according to claim 1, wherein: the fixed joint platform (101) that is provided with in upper end of valve body (1), the lower extreme of valve gap (2) corresponds to the fixed joint groove (201) that is provided with in position department of joint platform (101), joint platform (101) with joint groove (201) mutually supports and connects, joint platform (101) with the fixed sealing ring (10) that is provided with in middle part in joint groove (201), the material of sealing ring (10) is nitrile rubber.

4. A small-sized anti-leakage gate valve according to claim 1, wherein: the cushion cover (302) is made of polytetrafluoroethylene.

5. A small-sized anti-leakage gate valve according to claim 1, wherein: the screw rod (5) is in threaded connection with the fixing plate (303).

6. A small-sized anti-leakage gate valve according to claim 1, wherein: the inner part of the sealing sleeve (8) is fixedly provided with three sealing rings (9), wherein two sealing rings (9) are tightly attached to the outer end of the screw rod (5) and fixedly arranged, and the other sealing ring (9) is tightly attached to the inner wall of the valve cover (2).

7. A small-sized anti-leakage gate valve according to claim 1, wherein: the handle (6) is fixedly connected with the screw rod (5) through an upper nut (11).