CN209990977U

CN209990977U - Plunger valve

Info

Publication number: CN209990977U
Application number: CN201920474756.8U
Authority: CN
Inventors: 邱梅
Original assignee: Suzhou Danton Mechanical And Electrical Co Ltd
Current assignee: Suzhou Danton Mechanical And Electrical Co Ltd
Priority date: 2018-09-29
Filing date: 2019-04-10
Publication date: 2020-01-24
Anticipated expiration: 2029-04-10

Abstract

The utility model discloses a plunger valve, including plunger valve body (1) and plunger (4), valve body (1) medial surface cooperatees with plunger (4) and forms sealed face, its characterized in that: plunger (4) outside fixed mounting has mounting bracket (7), valve body (1) medial surface is provided with first bulge loop (10) and sets up first sealing ring (11) in first bulge loop (10), first bulge loop (10) are including flange (101) of perpendicular its body, inlay gland (9) that are equipped with the round platform form on mounting bracket (7), first sealing ring (11), gland (9) and flange (101) cooperate jointly to realize sealedly. The utility model discloses an inclined plane laminating has effectively avoided the leakage problem that valve live time long term sealing member wearing and tearing arouse, in addition, compresses tightly the flange through gland, can carry out secondary seal to the valve body, and sealed effect is better.

Description

Plunger valve

Technical Field

The utility model relates to a valve, in particular to plunger valve.

Background

The plunger valve is a common mechanical part and comprises a valve body, a valve cover, a valve rod, a plunger, a hole frame, a sealing ring, a hand wheel and the like, wherein the valve rod drives the plunger to reciprocate up and down in the middle of the hole frame to complete opening and closing of the valve, the plunger and the sealing ring in the valve are in interference fit, and a flange bolt in the valve cover is adjusted to seal a lateral force generated by compression of the sealing ring with a hole surface in the valve body and an excircle of the plunger, so that the sealing property of the valve is ensured. The plunger in the existing plunger valve is of a hard structure made of metal materials, so that the sealing effect is poor. In addition, in the plunger valve use, the plunger can produce the displacement friction and produce wearing and tearing with the sealing washer inner wall, uses the plunger valve to produce easily after a period and reveals, influences its life.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to the above-mentioned defect among the prior art, provide the plunger valve that sealing performance is better, the sealing member is difficult for droing.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme: the utility model provides a plunger valve, includes plunger valve body and plunger, the valve body medial surface cooperatees with the plunger and forms sealed face, plunger outside fixed mounting has the mounting bracket, the valve body medial surface is provided with first bulge loop and sets up first sealing ring in the first bulge loop, first bulge loop includes the flange of perpendicular its body, inlay the sealing gland who is equipped with the round platform form on the mounting bracket, first sealing ring, sealing gland and flange cooperate jointly to realize sealedly.

Furthermore, the utility model discloses still provide following subsidiary technical scheme: the first sealing ring is a circular truncated cone-shaped sealing ring and comprises a first sealing inclined surface matched with the sealing gland.

The sealing gland comprises a gland inclined plane, and the first sealing inclined plane and the gland inclined plane are matched and sealed together.

The first sealing ring and the sealing gland are made of elastic materials.

When the plunger moves downwards, the sealing gland can be pressed with the flange.

And a second convex ring is also arranged above the valve body, and a second sealing ring is arranged in the second convex ring.

The mounting frame is provided with a groove, and a sealing ring in interference fit with the second sealing ring is arranged in the groove.

The diameter of the sealing ring is equal to or slightly larger than the groove.

The height of sealing washer is higher than the second sealing ring, and the two can laminate sealed all the time when guaranteeing that the plunger reciprocates.

Compared with the prior art, the utility model has the advantages of:

1. the bottom end of the plunger is provided with a truncated cone-shaped sealing end cover, and the inclined surface of the sealing end cover can be effectively matched with the inclined surface of the second sealing ring, so that the leakage problem caused by abrasion of the sealing element when the valve is used for a long time is avoided;

2. the flange is pressed at the bottom end of the sealing gland to realize secondary sealing of the valve;

3. the sealing ring and the sealing gland are embedded in the plunger mounting frame, so that the sealing element can be effectively prevented from falling off.

Drawings

Fig. 1 is a schematic structural diagram of the plunger valve of the present invention.

Fig. 2 is a partial enlarged view of the plunger valve of the present invention.

Detailed Description

The following non-limiting detailed description of the present invention is provided in connection with the preferred embodiments and accompanying drawings.

As shown in fig. 1 and 2, the plunger valve comprises a valve body 1, a valve cover 2 and a valve rod 3, wherein the valve cover 2 is fixedly installed on the valve body 1, one end of the valve rod 3 penetrates through the valve cover 2 and extends into the valve body 1, and a plunger 4 is fixedly installed below the valve rod 3 and vertically arranged in the valve body 1. A flow passage is arranged in the valve body 1, and the inner side surface of the valve body 1 is matched with the plunger 4 to form a sealing surface for controlling the on-off of the fluid flowing from the flow inlet 1a to the flow outlet 1 b.

Further, a mounting frame 7 is fixedly mounted on the outer side of the plunger 4, a concave ring (not shown) is arranged at the lower end of the mounting frame 7, a sealing gland 9 is fixedly embedded in the concave ring, and the sealing gland 9 is preferably an elastic rubber sleeve. A first convex ring 10 is arranged below the valve body 1, the first convex ring 10 comprises a flange 101 perpendicular to the body of the first convex ring, a first sealing ring 11 is fixedly arranged in the first convex ring 10, and the first sealing ring 11 is preferably made of elastic materials. Specifically, the sealing gland 9 and the first sealing ring 11 are in a circular truncated cone shape, and the gland inclined plane 91 is matched with the first sealing inclined plane 111 to seal the channel of the valve body 1.

Furthermore, a second convex ring 5 is arranged on the valve body 1, and a second sealing ring 6 is arranged in the second convex ring 5. The mounting frame 7 is provided with a groove (not shown) in which a sealing ring 8 is arranged and cooperates with the second sealing ring 6. Preferably, the diameter of the sealing ring 8 is the same as or slightly larger than the width of the groove, so that the sealing ring 8 is more securely mounted on the plunger 4. The height of the sealing ring 8 is higher than that of the second sealing ring 6, so that the sealing ring 8 of the plunger 4 and the second sealing ring 6 can be always in contact sealing when the plunger 4 moves in a reciprocating mode under the pushing of the valve rod 3, and fluid is effectively prevented from entering the valve cover 2 when the valve is opened and closed. Preferably, the second sealing ring 6 and the sealing ring 8 have certain elasticity, and can be made of metal materials or other plastic materials.

When closing the valve, valve rod 3 drives plunger 4 vertical downstream, and gland inclined plane 91 pastes the cooperation tightly gradually with first sealed inclined plane 111, and when plunger 4 reachd the valve and close the stroke position completely, sealing washer 8 and the laminating of second sealing ring 6 are sealed, realize the sealed to

valve gap

2, and 9 bottom sticiss on flange 101 and carry out double sealing with gland inclined plane 91 to the fluid. When opening the valve, valve rod 3 drives plunger 4 vertical upward movement, and when the valve was opened completely, sealing washer 8 still can keep closely laminating with second sealing ring 6, and the fluid that prevents to flow into in the valve body 1 enters into the valve gap, causes spare part to damage.

The beneficial effects of the utility model are that, compare current interference seal, the utility model discloses an inclined plane laminating has effectively avoided the leakage problem that valve live time long term sealing member wearing and tearing arouse, in addition, compresses tightly the flange through gland, can carry out secondary seal to the valve body, and sealed effect is better. The mounting bracket is installed in the plunger outside, and the sealing washer inlays with gland and establishes in the mounting bracket, can effectively prevent droing of sealing member.

It should be noted that the above-mentioned preferred embodiments are only for illustrating the technical concepts and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention accordingly, and the protection scope of the present invention cannot be limited thereby. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a plunger valve, includes plunger valve body (1) and plunger (4), valve body (1) medial surface cooperatees with plunger (4) and forms sealed face, its characterized in that: plunger (4) outside fixed mounting has mounting bracket (7), valve body (1) medial surface includes first bulge loop (10) and sets up first sealing ring (11) in first bulge loop (10), first bulge loop (10) are including flange (101) of perpendicular its body, inlay gland (9) that are equipped with the round platform form on mounting bracket (7), first sealing ring (11), gland (9) and flange (101) cooperate jointly to realize sealedly.

2. The plug valve of claim 1, wherein: the first sealing ring (11) is a circular truncated cone-shaped sealing ring, and the first sealing ring (11) comprises a first sealing inclined surface (111) matched with the sealing gland (9).

3. The plug valve of claim 2, wherein: the sealing gland (9) comprises a gland inclined plane (91), and the first sealing inclined plane (111) and the gland inclined plane (91) are matched and sealed together.

4. The plug valve of claim 3, wherein: the first sealing ring (11) and the sealing gland (9) are made of elastic materials.

5. The plug valve of claim 1, wherein: when the plunger (4) moves downwards, the sealing gland (9) can be pressed with the flange (101).

6. The plug valve of claim 1, wherein: a second convex ring (5) is further arranged above the valve body (1), and a second sealing ring (6) is arranged in the second convex ring (5).

7. The plug valve of claim 6, wherein: the mounting frame (7) is provided with a groove, and a sealing ring (8) in interference fit with the second sealing ring (6) is arranged in the groove.

8. The plug valve of claim 7, wherein: the diameter of the sealing ring (8) is equal to or slightly larger than the groove.

9. The plug valve of claim 7, wherein: the height of the sealing ring (8) is higher than that of the second sealing ring (6), so that the plunger (4) and the second sealing ring can be always attached and sealed when moving up and down.