Pneumatic diaphragm stop valve convenient to maintain

Abstract

The utility model discloses a pneumatic diaphragm cut-off valve convenient to maintain, which comprises a valve body, an actuating mechanism, a cover plate, a lifting ring, a fastening bolt and a nut, the actuating mechanism is fixedly mounted at the upper end of the valve body, the cover plate is fixedly mounted on the upper surface of the actuating mechanism, the lifting ring is movably sleeved on the surface of the cover plate, and the fastening bolt is fixedly mounted on the cover plate. And a fastening bolt is embedded in the upper surface of the lifting ring. According to the pneumatic diaphragm cut-off valve convenient to maintain, when an executing mechanism of the pneumatic diaphragm cut-off valve needs to be maintained, only the nut needs to be detached, after the nut is detached, the lifting ring can ascend under the upward pulling action of the spring, the ascending lifting ring drives the fastening bolt to ascend, and then the fastening bolt is tightened. In this way, the fastening bolt does not need to be taken out manually, and when the nut is disassembled in a rotating mode, due to the fact that the limiting block and the fastening bolt are used for limiting, the fastening bolt does not need to be limited additionally, the working efficiency of disassembling the nut can be improved, and maintenance is convenient.

Description

Technical Field

[0001] This utility model relates to a pneumatic diaphragm shut-off valve, and in particular to a pneumatic diaphragm shut-off valve that is easy to maintain. Background Technology

[0002] A pneumatic diaphragm shut-off valve is a type of valve used to control fluid flow. It primarily receives signals from regulating instruments to cut off, open, or change the direction of media flow, thereby achieving automatic control of process parameters such as pressure, flow rate, temperature, or liquid level. This type of valve is widely used in automatic control and remote control systems for production processes in various industrial sectors, including petroleum, chemical, metallurgy, power, light industry, and textiles.

[0003] However, the current pneumatic diaphragm shut-off valve has some shortcomings. The cover plate on the pneumatic diaphragm shut-off valve is fixed to the actuator by the cooperation of fastening bolts and nuts. When it is necessary to remove the cover plate, the fastening bolts need to be limited first before the nuts can be rotated and removed. This is quite troublesome. After the nuts are removed, the fastening bolts need to be manually pulled out from the installation position. Utility Model Content

[0004] The main objective of this invention is to provide a pneumatic diaphragm shut-off valve that is easy to maintain, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A pneumatic diaphragm shut-off valve that is easy to maintain includes a valve body, an actuator, a cover plate, a lifting ring, a fastening bolt, and a nut. The actuator is fixedly installed on the upper end of the valve body. The cover plate is fixedly installed on the upper surface of the actuator. The lifting ring is movably sleeved on the surface of the cover plate. The fastening bolt is embedded on the upper surface of the lifting ring. The nut is sleeved on the lower end of the fastening bolt.

[0007] More preferably, the curved surface of the cover plate has a vertically extending lifting groove near the bottom, a guide rod is fixedly installed inside the lifting groove, a spring is sleeved on the surface of the guide rod, and limit blocks are fixedly installed on the curved surface of the cover plate on both sides of the lifting groove.

[0008] More preferably, a sleeve block is fixedly installed on the inner surface of the lifting ring, and a sleeve groove is formed on the inner surface of the lifting ring on both sides of the sleeve block. An insertion hole is formed on the upper surface of the lifting ring between the sleeve grooves. The number of sleeve blocks and insertion holes is several.

[0009] More preferably, the sleeve is fitted onto the surface of the guide rod, the upper end of the spring is fixed to the inner upper surface of the lifting groove, and the lower end of the spring is fixed to the sleeve.

[0010] More preferably, the fastening bolt contacts the limiting block, and the fastening bolt passes through the insertion hole.

[0011] In a further preferred embodiment, the limiting block passes through the sleeve groove, and the outer diameter of the lifting ring is equal to the outer diameter of the cover plate.

[0012] Compared with the prior art, this utility model proposes a pneumatic diaphragm shut-off valve that is easy to maintain, and has the following beneficial effects:

[0013] In this invention, by setting up a cover plate, a lifting ring, and a fastening bolt in a cooperative manner, when maintenance is required on the actuator of the pneumatic diaphragm shut-off valve, only the nut needs to be removed. After the nut is removed, the lifting ring will rise under the upward pull of the spring, and the rising lifting ring will drive the fastening bolt to rise. This eliminates the need to manually remove the fastening bolt. Furthermore, when rotating to remove the nut, the limiting block limits the fastening bolt, so there is no need to additionally limit the fastening bolt. This improves the efficiency of removing the nut and facilitates maintenance. Attached Figure Description

[0014] Figure 1 This is an overall structural diagram of a pneumatic diaphragm shut-off valve that is easy to maintain according to this utility model;

[0015] Figure 2 This utility model relates to a pneumatic diaphragm shut-off valve that is easy to maintain. Figure 1 Enlarged view of point A in the middle;

[0016] Figure 3 This is a structural diagram of the lifting ring of a pneumatic diaphragm shut-off valve that is easy to maintain according to this utility model.

[0017] In the diagram: 1. Valve body; 2. Actuator; 3. Cover plate; 301. Lifting groove; 302. Guide rod; 303. Spring; 304. Limit block; 4. Lifting ring; 401. Sleeve block; 402. Insertion hole; 403. Sleeve groove; 5. Fastening bolt; 6. Nut. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0019] like Figure 1-3As shown, a pneumatic diaphragm shut-off valve that is easy to maintain includes a valve body 1, an actuator 2, a cover plate 3, a lifting ring 4, a fastening bolt 5, and a nut 6. The actuator 2 is fixedly installed at the upper end of the valve body 1, and the cover plate 3 is fixedly installed on the upper surface of the actuator 2. The lifting ring 4 is movably sleeved on the surface of the cover plate 3, and the fastening bolt 5 is embedded on the upper surface of the lifting ring 4. The nut 6 is sleeved on the lower end of the surface of the fastening bolt 5. The cooperation between the fastening bolt 5 and the nut 6 not only fixes the cover plate 3 and the actuator 2 together, but also allows the lifting ring 4 to be in a pulled-down state. Thus, after the nut 6 is removed, the lifting ring 4, under the pulling force of the spring 303, causes the fastening bolt 5 to rise, eliminating the need to manually remove the fastening bolt 5 from its installation position.

[0020] Furthermore, a lifting groove 301 is longitudinally formed on the curved surface of the cover plate 3 near the bottom. A guide rod 302 is fixedly installed inside the lifting groove 301. A spring 303 is sleeved on the surface of the guide rod 302. Limiting blocks 304 are fixedly installed on the curved surface of the cover plate 3 on both sides of the lifting groove 301.

[0021] Furthermore, a sleeve block 401 is fixedly installed on the inner surface of the lifting ring 4, and a sleeve groove 403 is opened on the inner surface of the lifting ring 4 and on both sides of the sleeve block 401. An insertion hole 402 is opened on the upper surface of the lifting ring 4 and between the sleeve grooves 403. The number of sleeve blocks 401 and insertion holes 402 is several.

[0022] Furthermore, the sleeve 401 is sleeved on the surface of the guide rod 302, the upper end of the spring 303 is fixed to the inner upper surface of the lifting groove 301, and the lower end of the spring 303 is fixed to the sleeve 401; the spring 303 has an upward pulling force on the sleeve 401.

[0023] Furthermore, the fastening bolt 5 contacts the limiting block 304, and the fastening bolt 5 passes through the insertion hole 402; the limiting block 304 limits the upper end of the fastening bolt 5, so that when rotating and disassembling the nut 6, it is not necessary to reposition the fastening bolt 5.

[0024] Furthermore, the limiting block 304 penetrates the sleeve groove 403, and the outer diameter of the lifting ring 4 is equal to the outer diameter of the cover plate 3.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pneumatic diaphragm shut-off valve that is easy to maintain, characterized in that: The device includes a valve body (1), an actuator (2), a cover plate (3), a lifting ring (4), a fastening bolt (5), and a nut (6). The actuator (2) is fixedly installed on the upper end of the valve body (1). The cover plate (3) is fixedly installed on the upper surface of the actuator (2). The lifting ring (4) is movably sleeved on the surface of the cover plate (3). The fastening bolt (5) is embedded on the upper surface of the lifting ring (4). The nut (6) is sleeved on the surface of the fastening bolt (5) at its lower end.

2. The pneumatic diaphragm shut-off valve for easy maintenance according to claim 1, characterized in that: The curved surface of the cover plate (3) is provided with a lifting groove (301) in the lower longitudinal direction. A guide rod (302) is fixedly installed inside the lifting groove (301). A spring (303) is sleeved on the surface of the guide rod (302). Limiting blocks (304) are fixedly installed on both sides of the curved surface of the cover plate (3) and located in the lifting groove (301).

3. The pneumatic diaphragm shut-off valve for easy maintenance according to claim 2, characterized in that: A sleeve block (401) is fixedly installed on the inner surface of the lifting ring (4). A sleeve groove (403) is opened on the inner surface of the lifting ring (4) and on both sides of the sleeve block (401). An insertion hole (402) is opened on the upper surface of the lifting ring (4) and between the sleeve grooves (403). The number of sleeve blocks (401) and insertion holes (402) is several.

4. The pneumatic diaphragm shut-off valve for easy maintenance according to claim 3, characterized in that: The sleeve (401) is sleeved on the surface of the guide rod (302), the upper end of the spring (303) is fixed to the inner upper surface of the lifting groove (301), and the lower end of the spring (303) is fixed to the sleeve (401).

5. A pneumatic diaphragm shut-off valve for easy maintenance according to claim 4, characterized in that: The fastening bolt (5) contacts the limiting block (304), and the fastening bolt (5) passes through the insertion hole (402).

6. A pneumatic diaphragm shut-off valve for easy maintenance according to claim 5, characterized in that: The limiting block (304) passes through the sleeve groove (403), and the outer diameter of the lifting ring (4) is equal to the outer diameter of the cover plate (3).

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