Pin tightener with drive mechanism replaceable on line under pressure

Abstract

This utility model provides a pin-tightening device for online pressure-replacement of a drive mechanism, including a valve body. A mounting shell is provided on the front side of the valve body, communicating with the interior of the valve body. A valve core is rotatably mounted between the valve body and the mounting shell. Multiple semi-circular grooves are formed on the front side of the valve core. A docking shell is provided on the front side of the mounting shell, and a semi-circular groove is formed on the front side of the docking shell. A pin hole is formed by the semi-circular grooves on the left side and the semi-circular grooves on the left side. A mounting plate is provided at the upper front end of the valve body, and a placement cylinder is provided on the front side of the mounting plate. A pin shaft, compatible with the pin hole, is inserted inside the placement cylinder. This pin-tightening device for online pressure-replacement of a drive mechanism utilizes a pin shaft to fix the valve core during the replacement of the valve drive mechanism, preventing displacement, maintaining the stability of the medium flow in the pipeline, reducing economic losses caused by downtime, and improving work efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, and specifically relates to a pin tightening device that can replace the drive mechanism online under pressure. Background Technology

[0002] A valve is a device used to control the flow of fluids (liquids, gases, or suspended particles). Widely used in various piping systems, valves control parameters such as the flow direction, pressure, and flow rate of a medium by opening, closing, or regulating the flow. Valves play a vital role in many fields, including industrial production, building water supply and drainage, and energy supply.

[0003] When replacing the drive mechanism of existing valves under pressure online, the self-locking constraint of the drive mechanism on the valve shaft will be lost. Pipeline vibration or internal medium pressure will cause the valve to shift due to the force exerted on the valve plate and valve shaft. This shift will lead to flow control failure, affect the normal operation of the process, and cause abnormal pipeline operation. In order to avoid the above risks, it is usually necessary to stop production or depressurize the pipeline when replacing the drive mechanism. This not only increases the complexity of operation, but also causes production interruption and economic losses. Utility Model Content

[0004] In view of this, this utility model addresses the shortcomings of the prior art by providing a pin-tightening device for online pressure-based replacement of the drive mechanism. By using a pin shaft, the valve core can be fixed during the replacement of the valve drive mechanism to prevent displacement, maintain the stability of the medium flow in the pipeline, reduce economic losses caused by downtime, and improve work efficiency.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a pin tightening device for online pressure-replacement of drive mechanism, including a valve body, a mounting shell provided on the front side of the valve body, the mounting shell being connected to the interior of the valve body, a valve core being rotatably disposed between the valve body and the mounting shell, a plurality of semi-circular grooves I being provided on the front side of the valve core, a docking shell provided on the front side of the mounting shell, a semi-circular groove II being provided on the front side of the docking shell, a pin hole being formed by the semi-circular groove I and semi-circular groove II on the left side, a mounting plate provided on the upper front side of the valve body, the valve body and the mounting plate being fixed together by welding, a placement cylinder provided on the front side of the mounting plate, a pin shaft adapted to the pin hole being inserted inside the placement cylinder, a drive mechanism provided on the rear side of the valve body, the output shaft of the drive mechanism being connected to the rear end of the valve core.

[0006] As a further improvement of this utility model, a magnet is provided inside the mounting plate, and the magnet is magnetically attracted to the lower end of the pin.

[0007] As a further improvement of this utility model, the mounting shell and the docking shell are fixed together by multiple bolts, and the front end of the docking shell is provided with an end cap, which is fixed together with the docking shell by bolts.

[0008] As a further improvement of this utility model, a sealing ring 1 is provided between the mounting shell and the docking shell, and the sealing ring 1 has multiple round holes adapted to the mounting bolt 1. Multiple sealing ring 2 are provided in multiple annular grooves opened on the outer arc surface of the valve core, and multiple sealing ring 2 are in contact with the inner arc wall of the docking shell.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] Firstly, the end caps can protect the valve core, semicircular groove one, and semicircular groove two when the drive mechanism does not need to be replaced, preventing dust from entering the interior and affecting the opening and closing of the valve core.

[0011] Secondly, by removing the pin from the mounting cylinder and inserting it into the pin hole formed by the first and second semicircular grooves on the left side, the valve core is fixed. Then, the drive mechanism can be replaced using tools. When the valve core is closed, the second semicircular groove at the lower end of the valve core will form a pin hole with the first semicircular groove, allowing the pin to be inserted. This enables self-locking even after the valve core is closed. The replacement of the drive mechanism is achieved by using the pin to fix the valve core during the replacement of the valve drive mechanism, preventing its displacement, maintaining the stability of the medium flow in the pipeline, reducing economic losses caused by downtime, and improving work efficiency.

[0012] Thirdly, the magnet can attract and fix the pin, preventing the pin from shifting or being lost during transportation or daily use of the valve body. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a front view structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the right-side cross-sectional structure of this utility model;

[0017] Figure 4 This is an enlarged structural diagram of point A of this utility model.

[0018] In the diagram: 101, valve body; 102, valve core; 103, drive mechanism; 201, mounting shell; 202, end cap; 203, semi-circular groove one; 204, docking shell; 205, sealing ring one; 206, sealing ring two; 207, semi-circular groove two; 208, bolt one; 209, bolt two; 301, mounting plate; 302, pin; 303, placement cylinder; 304, magnet. Detailed Implementation

[0019] To better understand this utility model, the following embodiments further illustrate its content, but the scope of protection of this utility model is not limited to the embodiments described below. Numerous specific details are set forth in the following description to provide a more thorough understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without one or more of these details.

[0020] like Figure 1 , 2 As shown in Figures 3 and 4, a pin tightening device for online pressure-replacing drive mechanism includes a valve body 101. A mounting shell 201 is provided on the front side of the valve body 101, communicating with the interior of the valve body 101. A valve core 102 is rotatably mounted between the valve body 101 and the mounting shell 201. Multiple semi-circular grooves 203 are formed on the front side of the valve core 102. A docking shell 204 is provided on the front side of the mounting shell 201, with a semi-circular groove 207 formed on the front side of the docking shell 204. A pin hole is formed between the semi-circular groove 203 and the semi-circular groove 207 on the left side. A mounting plate 301 is provided at the upper front end of the valve body 101, and a placement cylinder 303 is provided on the front side of the mounting plate 301. The inside of the placement cylinder 303 is fitted with a pin 302 that matches the pin hole. The placement cylinder 303 can be used to properly store the pin 302. A drive mechanism 103 is provided on the rear side of the valve body 101. The output shaft of the drive mechanism 103 is connected to the rear end of the valve core 102. The mounting shell 201 and the docking shell 204 are fixed together by multiple bolts 208. An end cover 202 is provided on the front end of the docking shell 204. The end cover 202 and the docking shell 204 are fixed together by bolts 209. The end cover 202 can protect the valve core 102, the semi-circular groove 203 and the semi-circular groove 207 when the drive mechanism 103 does not need to be replaced, so as to prevent dust from entering the interior.

[0021] like Figure 4 As shown, a sealing ring 205 is provided between the mounting shell 201 and the docking shell 204, and the sealing ring 205 has multiple round holes that are compatible with the mounting bolts 208. Multiple annular grooves on the outer arc surface of the valve core 102 are each provided with a sealing ring 206. All sealing rings 206 are in contact with the inner arc wall of the docking shell 204. The sealing ring 205 effectively prevents the medium from leaking from the gap between the mounting shell 201 and the docking shell 204, ensuring that the fluid inside the valve body 101 does not leak out. The sealing rings 206 effectively prevent fluid from leaking from the gap between the valve core 102 and the docking shell 204, ensuring the tightness of the valve body 101.

[0022] First, install the valve body 101 on the pipeline. When it is necessary to replace the valve body 101 drive mechanism 103, use a tool to unscrew the bolt 209 and remove the end cover 202 from the docking shell 204. Then, take the pin 302 out of the installed placement cylinder 303 and insert it into the pin hole formed by the semicircular groove 203 and the semicircular groove 207 on the left side to fix the valve core 102. Then, the personnel can replace the drive mechanism 103 with a tool. Even if the self-locking limitation of the valve shaft by the drive mechanism 103 is lost, the pipeline vibration or internal medium pressure will not cause the valve core 102 to rotate.

[0023] When the valve core 102 is closed, the semicircular groove 207 at the lower end of the valve core 102 will form a pin hole with the semicircular groove 203, into which the pin 302 can be inserted, so that the valve core 102 can be self-locked after it is closed, preventing the valve core 102 from rotating due to internal medium pressure, so as to realize the replacement of the drive mechanism 103.

[0024] According to another embodiment of the present invention, such as Figure 2 As shown, a magnet 304 is provided inside the mounting plate 301. The magnet 304 is magnetically attracted to the lower end of the pin 302. The magnet 304 can attract and fix the pin 302, so as to prevent the pin 302 from being lost or misaligned during the transportation of the valve body 101.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A pinching device with a drive mechanism that can be replaced online under pressure, comprising a valve body (101), characterized in that: The valve body (101) has a mounting shell (201) on its front side. The mounting shell (201) is connected to the interior of the valve body (101). A valve core (102) is rotatably mounted between the valve body (101) and the mounting shell (201). The valve core (102) has multiple semi-circular grooves (203) on its front side. The mounting shell (201) has a docking shell (204) on its front side. The docking shell (204) has a semi-circular groove (207) on its front side. The semi-circular grooves (203) and (207) on the left side form a pin hole. The valve body (101) has a mounting plate (301) on its upper front side. The mounting plate (301) has a placement cylinder (303) on its front side. A pin (302) that matches the pin hole is inserted inside the placement cylinder (303).

2. The pin tightening device for online pressure-replacing drive mechanism as described in claim 1, characterized in that: A drive mechanism (103) is provided on the rear side of the valve body (101), and the output shaft of the drive mechanism (103) is connected to the rear end of the valve core (102).

3. A pin tightening device with an online replaceable drive mechanism as claimed in claim 1, characterized in that: The mounting shell (201) and the docking shell (204) are fixed together by a plurality of bolts (208).

4. The pin tightening device of claim 1, wherein: The front end of the docking shell (204) is provided with an end cap (202), and the end cap (202) and the docking shell (204) are fixed together by bolts (209).

5. A pin tightening device according to claim 1, wherein: A sealing ring (205) is provided between the mounting shell (201) and the docking shell (204), and the sealing ring (205) has a plurality of round holes that are adapted to the mounting bolts (208).

6. A pin tightening device with an online replaceable drive mechanism as claimed in claim 1, characterized in that: The valve core (102) has multiple annular grooves on its outer arc surface, each containing a sealing ring (206), and each sealing ring (206) is in contact with the inner arc wall of the docking shell (204).

7. A pin tightening device according to claim 1, wherein: The mounting plate (301) is equipped with a magnet (304) inside, and the magnet (304) is magnetically attracted to the lower end of the pin (302).

Images