CN215806553U

CN215806553U - Safety stop valve with double-seal structure

Info

Publication number: CN215806553U
Application number: CN202121886227.2U
Authority: CN
Inventors: 华清霞
Original assignee: Wuxi Jingyi Valve Co ltd
Current assignee: Wuxi Jingyi Valve Co ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2022-02-11
Anticipated expiration: 2031-08-12

Abstract

The utility model discloses a safety stop valve with a double-sealing structure, which relates to the field of stop valves and comprises a valve body, wherein the top of the valve body is provided with a mounting opening, a pressing mechanism and a sealing mechanism are respectively arranged in the mounting opening, and the pressing mechanism comprises a fixed plate, a threaded rod fixed at the top of the fixed plate through a bearing and a sliding block in threaded connection with the threaded rod. According to the utility model, the threaded rod is rotated to drive the sliding block to slide, so that the connecting rod and the rubber plate are driven to move, the rubber pad and the surface of the metal disc fixed on the outer wall of the valve rod can be tightly pressed, a better sealing effect can be achieved, meanwhile, the resistance between the rubber pad and the metal disc can be adjusted, and the valve is convenient to open or close; at extrusion metal disc downward movement formula, the sealing washer can receive the extrusion, extrudees rubber strip and foam particle simultaneously for the gap between valve body and the metal disc is sealed completely, utilizes dual sealed effect that has improved the device.

Description

Safety stop valve with double-seal structure

Technical Field

The utility model relates to the field of stop valves, in particular to a safety stop valve with a double-sealing structure.

Background

The shut-off valve is of relatively short opening or closing stroke and has a very reliable shut-off action, so that the valve is suitable for use as a medium shut-off or regulating and throttling valve and is therefore very popular. During the opening and closing of the stop valve, the valve rod and the valve body need to be kept in a sealing state, and a packing seal is usually adopted.

In order to ensure that the valve rod and the valve body are well sealed, more filler is often filled, the filling amount of the filler ensures that the sealing resistance is larger, the opening and closing are more laborious, the sealing material of the matching part of the filler and the valve rod is easy to wear, and the filler is more troublesome to replace when the sealing effect cannot be achieved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a safety stop valve with a double sealing structure.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a safety stop valve with a double-sealing structure comprises a valve body, wherein the top of the valve body is provided with a mounting opening, a pressing mechanism and a sealing mechanism are respectively arranged in the mounting opening, the pressing mechanism comprises a fixed plate, a threaded rod fixed at the top of the fixed plate through a bearing, a sliding block in threaded connection with the threaded rod, connecting rods symmetrically fixed at the bottoms of the sliding blocks and a rubber plate fixed at the bottom of the connecting rods;

the sealing mechanism comprises a sealing ring, a rubber strip fixed on the inner wall of the sealing ring, foam particles filled in the sealing ring and a rubber pipe fixed at the bottom of the sealing ring.

Preferably, a valve is arranged in the valve body, a mounting groove is formed in the top of the valve, a first spring is fixed on the inner wall of the mounting groove, and a valve rod is fixed on the top of the first spring.

Preferably, a metal disc is fixed on the outer wall of the valve rod, and a rubber pad is placed at the top of the metal disc.

Preferably, a plurality of second springs which are uniformly distributed are fixed at the top of the rubber pad, and the top ends of the second springs are fixed at the bottom of the rubber plate.

Preferably, the valve body is located the installing port top and opens the fixed slot that has evenly distributed, and the fixed plate is fixed at the fixed slot inner wall.

Preferably, the fixing plate is provided with symmetrically distributed fixing ports, and the inner walls of the fixing ports are in sliding fit with the connecting rods.

The utility model has the beneficial effects that:

1. the threaded rod is rotated to drive the sliding block to slide, so that the connecting rod and the rubber plate are driven to move, the rubber pad and the surface of the metal disc fixed on the outer wall of the valve rod can be tightly pressed, a good sealing effect can be achieved, meanwhile, the resistance between the rubber pad and the metal disc can be adjusted, and the valve is convenient to open or close;

2. at extrusion metal disc downward movement formula, the sealing washer can receive the extrusion, extrudees rubber strip and foam particle simultaneously for the gap between valve body and the metal disc is sealed completely, utilizes dual sealed effect that has improved the device.

Drawings

Fig. 1 is a schematic cross-sectional structural view of a safety shut-off valve with a double sealing structure according to the present invention.

Fig. 2 is a schematic cross-sectional structural diagram of a pressing mechanism of a safety stop valve with a double sealing structure according to the present invention.

Fig. 3 is a schematic cross-sectional structural diagram of a sealing mechanism of a safety shut-off valve with a double sealing structure according to the present invention.

In the figure: the valve comprises a valve body 1, a pressing mechanism 2, a valve rod 3, a metal disc 4, a sealing mechanism 5, a valve 6, a sliding block 7, a fixing plate 8, a threaded rod 9, a connecting rod 10, a rubber plate 11, a rubber pad 12, a sealing ring 13, a rubber tube 14, a rubber strip 15 and foam particles 16.

Detailed Description

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

Referring to fig. 1-3, a safety stop valve with a double sealing structure comprises a valve body 1, a pressing mechanism 2, a valve rod 3, a metal disc 4, a sealing mechanism 5 and a valve 6, wherein the top of the valve body 1 is provided with an installation opening, the pressing mechanism 2 comprises a fixed plate 8, a threaded rod 9, a sliding block 7, a connecting rod 10 and a rubber plate 11, the valve body 1 is provided with uniformly distributed fixed grooves at the top of the installation opening, the fixed plate 8 is fixed on the inner wall of the fixed groove, the fixed plate 8 is provided with symmetrically distributed fixed openings, the inner wall of the fixed opening is in sliding fit with the connecting rod 10, the bottom end of the threaded rod 9 is fixed on the top of the fixed plate 8 through a bearing, the sliding block 7 is in threaded fit with the threaded rod 9, the connecting rod 10 is symmetrically fixed on the bottom of the sliding block 7, the rubber plate 11 is fixed on the bottom of the connecting rod 10, the metal disc 4 is fixed on the outer wall of the valve rod 3, the top of the rubber pad 12 is fixed with a plurality of uniformly distributed second springs, the top end of the second spring is fixed at the bottom of the rubber plate 11, the sliding block 7 is driven to slide by rotating the threaded rod 9, so that the connecting rod 10 and the rubber plate 11 are driven to move, the rubber pad 12 and the surface of the metal disc 4 fixed on the outer wall of the valve rod 3 can be tightly pressed, a good sealing effect can be achieved, meanwhile, the resistance between the rubber pad 12 and the metal disc 4 can be adjusted, and the valve 6 can be conveniently opened or closed;

sealing mechanism 5 includes sealing washer 13, fix the rubber strip 15 at sealing washer 13 inner wall, pack foam particle 16 in sealing washer 13 and fix the rubber tube 14 in sealing washer 13 bottom, sealing washer 13 is placed at the mounting groove inner wall, and rubber strip 15 is the corrugate and fixes at sealing washer 13 inner wall, foam particle 16 fills in sealing washer 13, and rubber tube 14 fixes in sealing washer 13 bottom, it has the mounting groove to open at valve 6 top, the mounting groove inner wall is fixed with first spring, and 3 bottom mounting at the first spring top of valve rod, 4 portable down at extrusion metal disc, sealing washer 13 can receive the extrusion, extrude rubber strip 15 and foam particle 16 simultaneously, make the gap between valve body 1 and the metal disc 4 totally sealed, utilize dual sealed effect that has improved the device.

The working principle is as follows: the threaded rod 9 is rotated to drive the sliding block 7 to slide, so that the connecting rod 10 and the rubber plate 11 are driven to move, the rubber pad 12 and the surface of the metal disc 4 fixed on the outer wall of the valve rod 3 can be tightly pressed, a good sealing effect can be achieved, meanwhile, the resistance between the rubber pad 12 and the metal disc 4 can be adjusted, and the valve 6 can be conveniently opened or closed; at extrusion metal disc 4 lapse, sealing washer 13 can receive the extrusion, extrudees rubber strip 15 and foam particle 16 simultaneously for the gap between valve body 1 and the metal disc 4 is sealed completely, utilizes dual sealed effect that has improved the device.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A safety stop valve with a double-seal structure comprises a valve body (1) and is characterized in that a mounting opening is formed in the top of the valve body (1), a pressing mechanism (2) and a sealing mechanism (5) are respectively arranged in the mounting opening, the pressing mechanism (2) comprises a fixing plate (8), a threaded rod (9) fixed to the top of the fixing plate (8) through a bearing, a sliding block (7) in threaded connection with the threaded rod (9), connecting rods (10) symmetrically fixed to the bottoms of the sliding blocks (7) and a rubber plate (11) fixed to the bottoms of the connecting rods (10);

the sealing mechanism (5) comprises a sealing ring (13), a rubber strip (15) fixed on the inner wall of the sealing ring (13), foam particles (16) filled in the sealing ring (13) and a rubber pipe (14) fixed at the bottom of the sealing ring (13).

2. The safety stop valve with the double sealing structure is characterized in that a valve (6) is arranged in the valve body (1), a mounting groove is formed in the top of the valve (6), a first spring is fixed on the inner wall of the mounting groove, and a valve rod (3) is fixed on the top of the first spring.

3. The safety stop valve with the double sealing structure is characterized in that a metal disc (4) is fixed on the outer wall of the valve rod (3), and a rubber pad (12) is placed on the top of the metal disc (4).

4. The safety stop valve with double sealing structure as claimed in claim 3, wherein a plurality of second springs are fixed on the top of the rubber pad (12) and are distributed uniformly, and the top ends of the second springs are fixed on the bottom of the rubber plate (11).

5. A safety shut-off valve with a double sealing structure according to claim 1, characterized in that the valve body (1) is provided with fixing grooves evenly distributed at the top of the mounting opening, and the fixing plate (8) is fixed on the inner wall of the fixing groove.

6. The safety shut-off valve with double sealing structure as claimed in claim 1, wherein the fixing plate (8) is opened with symmetrically distributed fixing ports, and the inner wall of the fixing port forms a sliding fit with the connecting rod (10).