Valve rubber seat for butterfly valve

Abstract

The utility model relates to the technical field of valve rubber seats, in particular to a valve rubber seat for a butterfly valve, which comprises a valve casing and a rubber sleeve, the rubber sleeve acts on the inner side of the valve casing, the inside of the valve casing is movably connected with a butterfly plate, the surface of the rubber sleeve is fixedly connected with a rubber strip, the outer surface of the rubber sleeve is provided with a connecting groove, and the connecting groove is fixedly connected with the butterfly plate. A supporting spring is fixedly connected to the inner side of the connecting groove, an abutting ring is fixedly connected to the surface of the connecting groove, an abutting plate is fixedly connected to the surface of the abutting ring, and an acting groove is formed in the surface of the rubber sleeve. Under the connection of the abutting ring and the supporting spring, the elastic control effect of the acting position of the abutting plate on the rubber sleeve is achieved, the stability performance of the installation position of the rubber sleeve in the valve shell is improved, the using range of contact of the rubber sleeve and the butterfly plate is enlarged through abutting connection of the rubber strip and the butterfly plate, and then the airtight using performance of the rubber sleeve to the butterfly plate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve rubber seats, in particular to a valve rubber seat for a butterfly valve. Background Art

[0002] The valve rubber seat is a removable surface component inside the valve, which is used to support the valve core in the fully closed position and form a sealing pair.

[0003] By using the valve rubber seat, the sealing performance of the valve is improved. However, when the existing valve rubber seat is used, the rubber seat relies on the elasticity of its own material to fit inside the valve, and has poor stability. In addition, the internal baffle of the butterfly valve and the rubber seat are in contact with each other. Once the rubber seat is deformed, the sealing performance of the connection is affected. Utility Model Content

[0004] The purpose of the utility model is to provide a valve rubber seat for a butterfly valve, so as to solve the problem that the rubber seat proposed in the above background technology relies on the elasticity of its own material to fit inside the valve, has poor stability, and the internal baffle of the butterfly valve and the rubber seat are in contact with each other. Once the rubber seat is deformed, the sealing performance of the connection is affected.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a valve rubber seat for a butterfly valve, comprising a valve housing and a rubber sleeve, wherein the rubber sleeve acts on the inner side of the valve housing, a butterfly plate is movably connected to the inside of the valve housing, a rubber strip is fixedly connected to the surface of the rubber sleeve, a connecting groove is provided on the outer surface of the rubber sleeve, a supporting spring is fixedly connected to the inner side of the connecting groove, a retaining ring is fixedly connected to the surface of the retaining ring, a retaining plate is fixedly connected to the surface of the rubber sleeve, and an action groove is provided on the surface of the rubber sleeve.

[0006] Preferably, the rubber sleeves are in two groups and act on the inner side of the valve housing, and the surfaces of the rubber sleeves are correspondingly provided with plug rods and slots, and the connecting grooves are connected by abutting the plug rods and the slots.

[0007] Preferably, the rubber strip is in a circular ring shape, the rubber strip is abutted and connected with the butterfly plate through a rubber sleeve, and the rubber strip and the rubber sleeve are correspondingly connected.

[0008] Preferably, the connecting grooves are in a square groove shape, and the connecting grooves are evenly distributed on the outer surface of the rubber sleeve.

[0009] Preferably, two ends of the support spring are fixedly connected to the inner side of the connecting groove and the surface of the retaining ring.

[0010] Preferably, the retaining ring is elastically connected via a supporting spring and a connecting groove, and the retaining plate is in a plate shape and acts on the surface of the retaining ring.

[0011] Preferably, the abutment plates are evenly distributed on the outer surface of the rubber sleeve, the action grooves are in the shape of semicircular grooves, and the action grooves are distributed in two opposite groups on the surface of the rubber sleeve.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. Through the sleeve connection between the rubber sleeve and the valve housing, under the action of the rubber sleeve, the sealing performance of the butterfly plate in the valve housing is realized. Through the connection between the connecting groove and the supporting spring, under the connection between the retaining ring and the supporting spring, the elastic control effect of the position of the retaining plate on the rubber sleeve is achieved, thereby improving the stability of the installation position of the rubber sleeve in the valve housing.

[0014] 2. Through the connection between the rubber sleeve and the rubber strip, under the action of the rubber strip, the rubber strip and the butterfly plate are abutted and connected, which increases the contact range of the rubber sleeve and the butterfly plate, thereby improving the sealing performance of the rubber sleeve to the butterfly plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view stereoscopic schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of a side view, a cutaway view and a three-dimensional explosion of the structure of the utility model;

[0017] Figure 3 It is a three-dimensional schematic diagram of the structure of the rubber sleeve of the utility model;

[0018] Figure 4 It is a partial three-dimensional exploded schematic diagram of the connection structure between the rubber sleeve and the abutment plate of the utility model;

[0019] Figure 5 It is a bottom-up stereoscopic schematic diagram of the connection structure of the butt ring and the butt plate of the utility model.

[0020] In the figure: 1. valve housing; 2. rubber sleeve; 3. butterfly plate; 4. rubber strip; 5. connecting groove; 6. supporting spring; 7. backing ring; 8. backing plate; 9. action groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 , an embodiment provided by the utility model:

[0023] A valve rubber seat for a butterfly valve comprises a valve housing 1 and a rubber sleeve 2, wherein the rubber sleeve 2 acts on the inner side of the valve housing 1, a butterfly plate 3 is movably connected inside the valve housing 1, a rubber strip 4 is fixedly connected to the surface of the rubber sleeve 2, a connecting groove 5 is provided on the outer surface of the rubber sleeve 2, a supporting spring 6 is fixedly connected to the inner side of the connecting groove 5, a retaining ring 7 is fixedly connected to the surface of the connecting groove 5, a retaining plate 8 is fixedly connected to the surface of the retaining ring 7, an action groove 9 is provided on the surface of the rubber sleeve 2, through the connection between the valve housing 1 and the rubber sleeve 2, under the action of the rubber sleeve 2, the sealing performance of the butterfly plate 3 in the valve housing 1 is improved, and under the abutting connection between the retaining plate 8 and the valve housing 1, the placement stability of the rubber sleeve 2 in the valve housing 1 is enhanced.

[0024] Furthermore, the rubber sleeve 2 acts on the inner side of the valve housing 1 in two groups, and the surface of the rubber sleeve 2 is correspondingly distributed with plug rods and slots. The connecting groove 5 is connected by the abutment of the plug rod and the slot. Through the abutment connection between the rubber sleeve 2 and the valve housing 1, under the action of the plug rod and the slot, the connection performance of the rubber sleeve 2 in the valve housing 1 is realized.

[0025] Furthermore, the rubber strip 4 is in a circular ring shape, and the rubber strip 4 is connected by abutting the rubber sleeve 2 and the butterfly plate 3. The rubber strip 4 and the rubber sleeve 2 are connected correspondingly. Through the connection between the rubber sleeve 2 and the rubber strip 4, the rubber strip 4 and the butterfly plate 3 are abutted to improve the performance and effect of the rubber sleeve 2.

[0026] Furthermore, the connecting groove 5 is in the shape of a square groove, and the connecting groove 5 is evenly distributed on the outer surface of the rubber sleeve 2. Through the connection between the rubber sleeve 2 and the connecting groove 5, and the connection between the connecting groove 5 and the supporting spring 6, the elastic control effect of the action position of the retaining ring 7 on the rubber sleeve 2 is achieved.

[0027] Furthermore, the two ends of the support spring 6 are fixedly connected to the inner side of the connecting groove 5 and the surface of the retaining ring 7. Through the connection between the support spring 6 and the retaining ring 7, under the action of the support spring 6, the elastic effect of the retaining ring 7 in the connecting groove 5 is achieved.

[0028] Furthermore, the resist ring 7 is elastically connected to the connecting groove 5 through the supporting spring 6, and the resist plate 8 acts on the surface of the resist ring 7 in a plate shape. Through the connection between the resist ring 7 and the resist plate 8, under the action of the supporting spring 6, the elastic control effect of the resist plate 8 on the rubber sleeve 2 is achieved.

[0029] Furthermore, the abutment plates 8 are evenly distributed on the outer surface of the rubber sleeve 2, the action grooves 9 are in the shape of semicircular grooves, and the action grooves 9 are distributed in two opposite groups on the surface of the rubber sleeve 2. Under the abutment connection between the abutment plates 8 and the valve housing 1, the abutment plates 8 can improve the placement stability of the rubber sleeve 2 in the valve housing 1.

[0030] Working principle: when the rubber sleeve 2 is used, through the connection between the rubber sleeve 2 and the connecting groove 5, and the connection between the connecting groove 5 and the supporting spring 6, the butt ring 7 is elastically regulated in the connecting groove 5. Under the connection between the butt plate 8 and the butt ring 7, the butt plate 8 and the valve housing 1 are abutted to improve the stability of the rubber sleeve 2 placed in the valve housing 1. Under the connection between the rubber strip 4 and the rubber sleeve 2, the rubber strip 4 and the butterfly plate 3 are abutted to improve the coordination performance and effect between the rubber sleeve 2 and the butterfly plate 3.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A valve rubber seat for a butterfly valve, comprising a valve housing (1) and a rubber sleeve (2), characterized in that: The rubber sleeve (2) acts on the inner side of the valve housing (1), the valve housing (1) is movably connected to a butterfly plate (3), the surface of the rubber sleeve (2) is fixedly connected to a rubber strip (4), the outer surface of the rubber sleeve (2) is provided with a connecting groove (5), the inner side of the connecting groove (5) is fixedly connected to a supporting spring (6), the surface of the connecting groove (5) is fixedly connected to a retaining ring (7), the surface of the retaining ring (7) is fixedly connected to a retaining plate (8), and the surface of the rubber sleeve (2) is provided with an action groove (9).

2. The valve rubber seat for a butterfly valve according to claim 1, characterized in that: The rubber sleeves (2) are in two groups and act on the inner side of the valve housing (1). Insertion rods and slots are correspondingly distributed on the surface of the rubber sleeves (2). The connection grooves (5) are connected by the insertion rods and slots.

3. The valve rubber seat for a butterfly valve according to claim 1, characterized in that: The rubber strip (4) is in a circular ring shape, the rubber strip (4) is abutted and connected with the rubber sleeve (2) and the butterfly plate (3), and the rubber strip (4) and the rubber sleeve (2) are correspondingly connected.

4. The valve rubber seat for a butterfly valve according to claim 1, characterized in that: The connection grooves (5) are in the shape of square grooves, and the connection grooves (5) are evenly distributed on the outer surface of the rubber sleeve (2).

5. The valve rubber seat for a butterfly valve according to claim 1, characterized in that: The two ends of the support spring (6) are fixedly connected to the inner side of the connection groove (5) and the surface of the retaining ring (7).

6. The valve rubber seat for a butterfly valve according to claim 1, characterized in that: The retaining ring (7) is elastically connected to the connecting groove (5) via a supporting spring (6), and the retaining plate (8) is in a plate shape and acts on the surface of the retaining ring (7).

7. The valve rubber seat for a butterfly valve according to claim 1, characterized in that: The abutment plates (8) are evenly distributed on the outer surface of the rubber sleeve (2); the action grooves (9) are in the shape of semicircular grooves; and the action grooves (9) are distributed in two groups opposite to each other on the surface of the rubber sleeve (2).

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