CN214404752U

CN214404752U - Flat gate valve

Info

Publication number: CN214404752U
Application number: CN202023340084.3U
Authority: CN
Inventors: 杨建�; 朱文忠; 许忠义; 张官军; 淮飞; 陈嘉良; 许艳; 杨志新; 王中军; 张文霞; 杨江明
Original assignee: Qinghai Salt Lake Yuanpin Chemical Co ltd
Current assignee: Qinghai Salt Lake Yuanpin Chemical Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-10-15
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a flat gate valve, which comprises a valve body, a valve cover, a valve rod, an operator, a flashboard and a valve seat, wherein a flow passage is arranged in the valve body, the valve cover is arranged at the upper end of the valve body, the valve rod penetrates through the valve cover and extends into the flow passage in the valve body to be connected with the flashboard, the operator is arranged on the valve cover to drive the valve rod to lift, and the valve seat is arranged in the flow passage to be in sealing fit with the flashboard; the flashboard includes the base plate, connecting axle and symmetry set up in the closing plate of base plate both sides, the connecting axle includes the optical axis section and sets up in the screw thread section at optical axis section both ends, the optical axis section is worn to establish on the base plate, the screw thread section at optical axis section both ends runs through the closing plate that corresponds respectively, the outside of closing plate is equipped with and is the cell body of interior concavity, the outer end of screw thread section is located the cell body that corresponds to threaded connection has lock nut in the screw thread section, lock nut supports the outside at corresponding closing plate. The utility model discloses only need when the flashboard wearing and tearing change the wearing and tearing position can, can avoid whole flashboard to change and cause the waste, can reduce the maintenance cost again.

Description

Flat gate valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to a plate valve.

Background

The valve is a control part in a fluid conveying system, has the functions of stopping, regulating, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like, is one of valves, and has the opening and closing part as a flashboard which moves in the direction perpendicular to the fluid direction and can only be fully opened and fully closed but cannot be regulated and throttled. The gate plate of the wedge gate valve can be made into a whole, namely a rigid gate plate; the gate plate can also be made into a gate plate capable of generating micro deformation so as to improve the manufacturability of the gate plate and compensate the deviation of the angle of the sealing surface in the machining process, and the gate plate is called an elastic gate plate. According to the existing gate valve, after the service life is prolonged, the gate plate can be abraded, so that the gap between the gate plate and the valve seat is enlarged, the tightness is reduced when the gate plate and the valve seat are matched, and then medium leakage occurs. It is common practice to replace the entire gate plate to restore good sealing between the gate plate and the valve seat. However, replacing the entire gate plate is wasteful and costly to maintain.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a plate valve, the utility model discloses a split type flashboard structure, only need change when the flashboard wearing and tearing the wearing and tearing position can, can avoid whole flashboard to change and cause the waste, can reduce the maintenance cost again.

In order to achieve the above object, the utility model provides a following technical scheme: the flat gate valve comprises a valve body, a valve cover, a valve rod, an operator, a gate plate and a valve seat, wherein a flow passage is arranged in the valve body, the valve cover is arranged at the upper end of the valve body, the valve rod penetrates through the valve cover and extends into the flow passage in the valve body to be connected with the gate plate, the operator is arranged on the valve cover and is used for driving the valve rod to lift, and the valve seat is arranged in the flow passage and is used for forming sealing fit with the gate plate; the flashboard comprises a base plate, a connecting shaft and sealing plates symmetrically arranged on two sides of the base plate, the connecting shaft comprises an optical axis section and thread sections arranged at two ends of the optical axis section, the optical axis section is arranged on the base plate in a penetrating mode, the thread sections at two ends of the optical axis section penetrate through the corresponding sealing plates respectively, groove bodies which are concave inwards are arranged on the outer sides of the sealing plates, the outer ends of the thread sections are located in the corresponding groove bodies, locking nuts are connected to the thread sections in a threaded mode, and the locking nuts abut against the outer sides of the corresponding sealing plates.

Through adopting above-mentioned technical scheme, design the flashboard into by middle base plate and set up in the split type structure of the closing plate of base plate both sides, through running through the connecting axle on base plate and two closing plates, screw in lock nut respectively at the both ends of connecting axle, when screwing two lock nut, two closing plates are locked in the both sides of base plate, thereby realize the equipment of split type flashboard, when the closing plate wearing and tearing on the flashboard are serious, only need to screw out lock nut, change the closing plate, can reach the effect of recovering good leakproofness between flashboard and the disk seat, therefore, this structure can avoid whole flashboard to change and cause the waste, can show reduction maintenance cost.

The utility model discloses further set up to, lock nut with correspond to press from both sides between the terminal surface in the cell body and be equipped with the rubber gasket.

Through adopting above-mentioned technical scheme, the rubber gasket can provide lock nut axial pretightning force to increase the frictional force between lock nut and the connecting axle screw thread section, and then play lock nut's locking effect.

The utility model discloses further set up as, the surface of base plate is equipped with and constitutes extrusion fit's elastic layer with the closing plate.

Through adopting above-mentioned technical scheme, can promote base plate and closing plate complex compactness.

The utility model discloses further set up to, cell body inner is equipped with the support ring, and the support ring sets up in the periphery that corresponds lock nut, the cover is equipped with on the support ring and constitutes sealed complex rubber sleeve with the support ring.

Through adopting above-mentioned technical scheme, can play the water-proof effects to lock nut and connecting axle to avoid it to rust.

The utility model discloses further set up to, the periphery side of support ring is equipped with the anticreep bulge loop that multichannel and rubber sleeve week side offset along the axial.

Through adopting above-mentioned technical scheme, can promote the fastness of rubber sleeve installation.

The utility model discloses further set up to, the inboard of closing plate is equipped with the location convex part that the cross-section is rectangular shape, be equipped with on the base plate with the location concave part that location convex part agrees with mutually.

Through adopting above-mentioned technical scheme, can realize the location of closing plate, do benefit to its installation operation.

The utility model discloses further set up to, the flashboard is big-end-up's toper shape, disk seat and valve body are as an organic whole to the disk seat is the slant setting with flashboard matched with.

By adopting the technical scheme, the sealing performance of the valve seat and the valve clack can be obviously improved.

The utility model discloses further set up to, be equipped with wear-resistant coating on the disk seat.

Through adopting above-mentioned technical scheme, can improve the life of disk seat.

The utility model discloses further set up to, the base plate upper end is equipped with T shape spread groove, valve rod inner be equipped with the T shape connecting portion that T shape spread groove agrees with mutually.

Through adopting above-mentioned technical scheme, made things convenient for the dismouting operation of valve rod and base plate greatly, be convenient for the maintenance operation of equipment in earlier stage and later stage.

Drawings

Fig. 1 is a schematic overall structure diagram of the present invention;

fig. 2 is a schematic structural diagram of the shutter of the present invention.

In the figure: 1. a valve body; 2. a valve cover; 3. a valve stem; 4. an operator; 5. a shutter plate; 6. a valve seat; 7. a flow channel; 8. a substrate; 9. a connecting shaft; 10. a sealing plate; 11. a light axis segment; 12. a threaded segment; 13. a trough body; 14. locking the nut; 15. a rubber gasket; 16. an elastic layer; 17. a support ring; 18. a rubber sleeve; 19. an anti-drop convex ring; 20. a positioning projection; 21. a positioning recess; 22. a wear-resistant coating; 23. t-shaped connecting grooves; 24. t-shaped connecting parts.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): the flat gate valve shown in fig. 1 and fig. 2 comprises a valve body 1, a valve cover 2, a valve rod 3, an operator 4, a gate plate 5 and a valve seat 6, wherein a flow passage 7 is arranged in the valve body 1, the valve cover 2 is arranged at the upper end of the valve body 1, the valve rod 3 penetrates through the valve cover 2 and extends into the flow passage 7 in the valve body 1 to be connected with the gate plate 5, the operator 4 is arranged on the valve cover 2 to drive the valve rod 3 to lift, and the valve seat 6 is arranged in the flow passage 7 to form sealing fit with the gate plate 5; the flashboard 5 comprises a base plate 8, a connecting shaft 9 and sealing plates 10 symmetrically arranged on two sides of the base plate 8, the connecting shaft 9 comprises a smooth shaft section 11 and thread sections 12 arranged at two ends of the smooth shaft section 11, the smooth shaft section 11 is arranged on the base plate 8 in a penetrating mode, the thread sections 12 at two ends of the smooth shaft section 11 respectively penetrate through the corresponding sealing plates 10, groove bodies 13 which are concave are arranged on the outer sides of the sealing plates 10, the outer ends of the thread sections 12 are located in the corresponding groove bodies 13 to avoid interference between the thread sections 12 and the valve seat 6, locking nuts 14 are connected to the thread sections 12 in a threaded mode, the locking nuts 14 abut against the outer sides of the corresponding sealing plates 10, and when the two locking nuts 14 are screwed, the two sealing plates 10 are locked on two sides of the base plate 8, so that the split flashboard 5 is assembled.

As shown in fig. 2, a rubber gasket 15 is clamped between the locking nut 14 and the inner end surface of the corresponding groove 13, and the rubber gasket 15 can provide an axial pre-tightening force for the locking nut 14, so that the friction force between the locking nut 14 and the threaded section 12 of the connecting shaft 9 is increased, and the locking effect of the locking nut 14 is achieved.

As shown in fig. 2, the outer surface of the base plate 8 is provided with an elastic layer 16 which forms a press fit with the sealing plate 10, the elastic layer 16 may be made of rubber, and the elastic layer 16 can improve the tightness of the fit between the base plate 8 and the sealing plate 10.

As shown in fig. 2, the inner end of the groove body 13 is welded with the support ring 17, the support ring 17 is arranged on the periphery of the corresponding lock nut 14, the support ring 17 is sleeved with the rubber sleeve 18 which forms a sealing fit with the support ring 17, and the design can play a role in preventing the lock nut 14 and the connecting shaft 9 from rusting.

As shown in fig. 2, the outer circumference of the support ring 17 is provided with a plurality of anti-slip convex rings 19 which are against the circumference of the rubber sleeve 18 along the axial direction, and the design can improve the firmness of the installation of the rubber sleeve 18.

As shown in fig. 2, the sealing plate 10 is provided with a positioning protrusion 20 having a rectangular cross section on the inner side thereof, and the base plate 8 is provided with a positioning recess 21 fitted with the positioning protrusion 20, so that the sealing plate 10 can be positioned and the mounting operation thereof can be facilitated.

As shown in fig. 1, the gate plate 5 is in a tapered shape with a large top and a small bottom, the valve seat 6 is integrated with the valve body 1, and the valve seat 6 is obliquely arranged in cooperation with the gate plate 5, so that the design can remarkably improve the sealing performance between the valve seat 6 and the valve flap.

As shown in fig. 1, the valve seat 6 is provided with a wear-resistant coating 22, and the wear-resistant coating 22 can improve the service life of the valve seat 6.

As shown in the attached drawing 1, the upper end of the base plate 8 is provided with a T-shaped connecting groove 23, the inner end of the valve rod 3 is provided with a T-shaped connecting part 24 matched with the T-shaped connecting groove 23, the valve rod 3 and the base plate 8 can be assembled and disassembled conveniently, and the later-stage assembly and the later-stage maintenance operation are facilitated.

The working principle is as follows: the utility model discloses design flashboard 5 for by middle base plate 8 and set up in the split type structure of the closing plate 10 of 8 both sides of base plate, through run through connecting axle 9 on base plate 8 and two closing plate 10, screw in lock nut 14 respectively at the both ends of connecting axle 9, when screwing two lock nut 14, two closing plate 10 are locked in the both sides of base plate 8, thereby realize the equipment of split type flashboard 5, when closing plate 10 wearing and tearing on flashboard 5 are serious, only need screw out lock nut 14, change closing plate 10, can reach the effect of recovering good leakproofness between flashboard 5 and the disk seat 6, therefore, this structure can avoid whole flashboard 5 to change and cause the waste, can show reduction maintenance cost.

Claims

1. The flat gate valve comprises a valve body (1), a valve cover (2), a valve rod (3), an operator (4), a flashboard (5) and a valve seat (6), wherein a flow passage (7) is formed in the valve body (1), the valve cover (2) is arranged at the upper end of the valve body (1), the valve rod (3) penetrates through the valve cover (2) and extends into the flow passage (7) in the valve body (1) to be connected with the flashboard (5), the operator (4) is arranged on the valve cover (2) to drive the valve rod (3) to lift, and the valve seat (6) is arranged in the flow passage (7) to form sealing fit with the flashboard (5); the method is characterized in that: flashboard (5) include base plate (8), connecting axle (9) and symmetry set up in closing plate (10) of base plate (8) both sides, connecting axle (9) include smooth axial segment (11) and set up in threaded section (12) at smooth axial segment (11) both ends, smooth axial segment (11) are worn to establish on base plate (8), and corresponding closing plate (10) are run through respectively in threaded section (12) at smooth axial segment (11) both ends, the outside of closing plate (10) is equipped with groove body (13) that are interior concavity, the outer end of threaded section (12) is located corresponding groove body (13), and threaded connection has lock nut (14) on threaded section (12), lock nut (14) support in the outside that corresponds closing plate (10).

2. The flat gate valve of claim 1, wherein: and a rubber gasket (15) is clamped between the locking nut (14) and the inner end face of the corresponding groove body (13).

3. The flat gate valve of claim 1, wherein: the outer surface of the base plate (8) is provided with an elastic layer (16) which forms extrusion fit with the sealing plate (10).

4. The flat gate valve of claim 1, wherein: the inner of cell body (13) is equipped with support ring (17), and support ring (17) set up in the periphery that corresponds lock nut (14), the cover is equipped with on support ring (17) and constitutes sealed complex rubber sleeve (18) with support ring (17).

5. The flat gate valve of claim 4, wherein: the periphery side of the support ring (17) is provided with a plurality of anti-falling convex rings (19) which are abutted against the periphery side of the rubber sleeve (18) along the axial direction.

6. The flat gate valve of claim 1, wherein: the inner side of the sealing plate (10) is provided with a positioning convex part (20) with a rectangular cross section, and the base plate (8) is provided with a positioning concave part (21) matched with the positioning convex part (20).

7. The flat gate valve of claim 1, wherein: flashboard (5) are big-end-up's toper shape, valve seat (6) and valve body (1) are as an organic whole to valve seat (6) are the slant setting with flashboard (5) matched with.

8. The flat gate valve of claim 1, wherein: and the valve seat (6) is provided with a wear-resistant coating (22).

9. The flat gate valve of claim 1, wherein: the valve is characterized in that a T-shaped connecting groove (23) is formed in the upper end of the base plate (8), and a T-shaped connecting portion (24) matched with the T-shaped connecting groove (23) is formed in the inner end of the valve rod (3).