Elastic sleeve adjusting valve

Abstract

The utility model relates to an elastic sleeve adjusting valve which is composed of a valve body, a valve seat, an elastic sleeve, a sealing gasket, a valve cover and a bolt. The valve body is connected with the valve cover through a bolt, the valve cover presses a sealing gasket between the valve body and the valve cover, and meanwhile the valve cover further presses the elastic sleeve and the valve seat. An elastic support B and an elastic support A are arranged at the upper end and the lower end of the elastic sleeve respectively. The upper end of the elastic support A and the lower end of the elastic support B are provided with elastic grooves, and the bottoms of the elastic grooves are provided with circles R. Conical surfaces are arranged at the upper end of the elastic support B and the lower end of the elastic support A, and the taper angle of each conical surface is 15-30 degrees. The elastic sleeve can effectively compensate the size change caused by thermal expansion and cold contraction of materials under the high-temperature working condition, the leakage problem between the valve body and the valve cover is solved, the problems of looseness, vibration and the like of the sleeve and the valve seat are solved, and the product performance is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of elastic sleeve regulating valve, which can be used for cage type regulating valve. BACKGROUND

[0002] General ordinary cage type sleeve regulating valve is composed of valve body, valve seat, sleeve, bonnet, sealing gasket, bolt (see Figure 1 ). Bonnet is connected with valve body using bolt, bonnet is pressed tightly sleeve, valve seat, and also pressed tightly sealing gasket between valve body and bonnet, and ensure that sealing has no leakage.

[0003] Under high temperature working condition, because the temperature of medium in valve cavity is higher, each part is not the same under temperature state, the material of each part is different, and the thermal expansion coefficient is also different. If the expansion length of sleeve and valve seat is greater than valve body, sleeve and valve seat will push bonnet, which causes that the pressing force of sealing gasket between valve body and bonnet is insufficient, and leakage is caused. If the expansion length of sleeve and valve seat is less than valve body, it will cause that the pressing force of sleeve and valve seat is insufficient, and looseness and vibration are caused. It will seriously affect the performance and quality of product.

[0004] The utility model provides a kind of elastic sleeve regulating valve, its inside is provided with elastic sleeve, with good thermal elasticity, under high temperature working condition, elastic sleeve can effectively compensate the size influence caused by material thermal expansion and cold shrink, both solve the leakage problem between valve body and bonnet, and also solve the looseness of elastic sleeve and valve seat and other problems, greatly improve the performance of product. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of elastic sleeve regulating valve, which is composed of valve body, valve seat, elastic sleeve, sealing gasket, bonnet and bolt. Valve body is connected with bonnet using bolt, bonnet is pressed tightly sealing gasket between valve body and bonnet, and bonnet is also pressed tightly elastic sleeve and valve seat. The upper end of elastic sleeve is provided with elastic support B, and the lower end of elastic sleeve is provided with elastic support A.

[0006] The upper end of elastic support A and the lower end of elastic support B are both provided with elastic groove, and the bottom of elastic groove is provided with circle R, so as to avoid stress concentration. Elastic support A and elastic support B have elastic compensation capacity.

[0007] The upper end of elastic support B is provided with conical surface, and the taper angle B is 15 to 30 degrees. The lower end of elastic support A is provided with conical surface, and the taper angle A is 15 to 30 degrees.

[0008] The utility model has the beneficial effect of providing a kind of elastic sleeve regulating valve, which is provided with elastic sleeve inside, and elastic sleeve can effectively compensate the size change caused by material thermal expansion and cold shrink under high temperature working condition. On the one hand, the leakage problem between valve body and bonnet is solved, and on the other hand, the looseness and vibration of elastic sleeve and valve seat are solved, which greatly improves the performance of product. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of a common cage-type sleeve regulating valve;

[0010] Figure 2 This is a schematic diagram of the structure of a flexible sleeve regulating valve;

[0011] Figure 3 This is a schematic diagram of the elastic sleeve.

[0012] In the diagram, 1. Valve body, 2. Valve seat, 3. Elastic sleeve, 4. Sealing gasket, 5. Valve cover, 6. Bolt. Detailed Implementation

[0013] exist Figure 2 , Figure 3 In the illustrated embodiment, the elastic sleeve regulating valve consists of a valve body (1), a valve seat (2), an elastic sleeve (3), a sealing gasket (4), a valve cover (5), and bolts (6). The valve body (1) and the valve cover (5) are connected by bolts (6). The valve cover (5) presses against the sealing gasket (4) between the valve body (1) and the valve cover (5), and at the same time, the valve cover (5) also presses against the elastic sleeve (3) and the valve seat (3). An elastic support B is provided at the upper end of the elastic sleeve (3), and an elastic support A is provided at the lower end of the elastic sleeve (3).

[0014] Both the upper end of elastic support A and the lower end of elastic support B are provided with elastic grooves, and the bottom of the elastic grooves is provided with a circle R to avoid stress concentration, so that elastic support A and elastic support B have good elastic compensation ability.

[0015] The upper end of the elastic support B is provided with a conical surface, and the cone angle B is 15 degrees to 30 degrees; the lower end of the elastic support A is provided with a conical surface, and the cone angle A is 15 degrees to 30 degrees.

[0016] The elastic sleeve (3) can effectively compensate for the dimensional changes of parts caused by temperature under high temperature conditions. It not only solves the leakage problem between the valve body (1) and the valve cover (5), but also solves the problems of loosening and vibration of the elastic sleeve (3) and the valve seat (2), thus improving the product performance.

Claims

1. An elastomeric sleeve regulator valve characterized by: It is by valve body (1), valve seat (2), elastic sleeve (3), gasket (4), valve cover (5), bolt (6) is composed, valve body (1) and valve cover (5) adopt bolt (6) connection, the upper end of elastic sleeve (3) is provided with elastic support B, the lower end of elastic sleeve (3) is provided with elastic support A.

2. An elastomeric sleeve regulator valve according to claim 1, wherein: The upper end of elastic support A and the lower end of elastic support B are provided with elastic grooves, and the bottoms of the elastic grooves are provided with circles R.

3. An elastomeric sleeve regulator valve according to claim 1, wherein: The upper end of elastic support B is provided with a conical surface, and the taper angle B is 15 to 30 degrees; the lower end of elastic support A is provided with a conical surface, and the taper angle A is 15 to 30 degrees.

Images