Low-temperature regulating valve convenient to overhaul

Abstract

The utility model discloses a low-temperature regulating valve convenient to overhaul, which comprises a low-temperature regulating valve body, and the outer side of the low-temperature regulating valve body is attached to a connecting pipe. A fixing bolt penetrates through the outer end of the low-temperature adjusting valve body in a sliding mode, the outer end of the fixing bolt extends into the connecting pipe, a sliding block is fixed to the outer end of the fixing bolt, the outer end of the sliding block extends into a sliding groove to form a clamping mechanism, and the sliding groove is formed in the connecting pipe. A protruding block is slidably connected to the interior of the sliding block, and the outer end of the protruding block is arranged in a semicircular shape. The outer end of the protruding block extends into a groove to form a clamping mechanism, and the groove is formed in the connecting pipe. The low-temperature adjusting valve convenient to overhaul is provided with the fixing bolt, the fixing bolt drives the sliding block to be disengaged from the sliding groove by rotating the fixing bolt, then the low-temperature adjusting valve body and the connecting pipe can be separated, and therefore the low-temperature adjusting valve body can be overhauled conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to low temperature regulating valve technical field, concretely is a low temperature regulating valve convenient for overhauling. BACKGROUND

[0002] By adjusting the flow and pressure of low temperature fluid, the low temperature regulating valve can ensure the stable operation of the pipeline system. In the pipeline of flammable and explosive medium such as liquefied natural gas and liquefied petroleum gas, the accurate control of the low temperature regulating valve is of great significance to prevent safety accidents such as leakage and explosion.

[0003] The existing low temperature regulating valve and the pipeline are connected by fixed bolts, so that the fixed bolts need to be disassembled first during maintenance, so that the low temperature regulating valve and the pipeline are separated, and then the low temperature regulating valve can be maintained.

[0004] To solve the above-mentioned defects, the utility model discloses a low temperature regulating valve convenient for overhauling, which rotates the knob to drive the threaded rod to rotate in the threaded hole formed in the side wall of the rotating column, and pushes the movable plate outward through the rotating block until the connecting rod is removed from the flange hole formed in the side wall of the flange ring installed on one end of the low temperature regulating valve body and the connecting pipeline, and then the threaded rod cannot be turned outward through the rotating rod at both ends of the rotating column, so that the low temperature regulating valve body can be quickly disassembled from the connecting pipeline for maintenance, and the low temperature regulating valve body can be quickly installed and connected to the connecting pipeline after maintenance, which is simple and convenient to disassemble and assemble without the need for auxiliary tools to install and disassemble the flange ring through bolts and nuts, so as to conveniently disassemble and assemble the low temperature regulating valve body in the connecting pipeline for maintenance.

[0005] In the actual use of the above device, although the turning of the rotating column achieves the purpose of convenient disassembly and assembly, before turning, the threaded rod needs to be turned to separate the threaded rod from the connecting pipe, so that the low temperature regulating valve can be disassembled and assembled, which will cause the disassembly and assembly to be more complicated.

[0006] Therefore, we propose a low temperature regulating valve convenient for overhauling to solve the above problems. Utility model content

[0007] The utility model aims at providing a low temperature regulating valve convenient for overhauling to solve the problem that the threaded rod needs to be turned to separate the threaded rod from the connecting pipe, so that the low temperature regulating valve can be disassembled and assembled, which will cause the disassembly and assembly to be more complicated.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a low-temperature regulating valve that is easy to maintain, comprising a low-temperature regulating valve body, wherein the outer side of the low-temperature regulating valve body is fitted with a connecting pipe;

[0009] The outer end of the low-temperature regulating valve body is slidably connected to a fixing bolt, and the outer end of the fixing bolt extends into the interior of the connecting pipe. A slider is fixed to the outer end of the fixing bolt, and the outer end of the slider extends into the interior of the sliding groove to form a locking mechanism. The sliding groove is opened inside the connecting pipe.

[0010] Preferably, the slider has a protrusion inside, and the outer end of the protrusion is semi-circular.

[0011] Preferably, the outer end of the protrusion extends into the interior of the groove to form an engaging mechanism, and the groove is formed inside the connecting pipe.

[0012] Preferably, the inner end of the protrusion is connected to a first spring, and the inner end of the first spring is connected inside the fixing bolt.

[0013] Preferably, the right end of the fixing bolt is attached to a push plate, and the outer end of the push plate extends into the interior of the air chamber, and the air chamber is nested inside the connecting pipe.

[0014] Preferably, the outer end of the gas chamber is connected to the sealing ring via a pipe, and the outer end of the sealing ring is fixed on the connecting pipe, while the inner end of the connecting pipe is attached to the outer side of the low-temperature regulating valve body to form a sealing mechanism.

[0015] Preferably, the inner end of the push plate is nested with a second spring, and the outer end of the second spring is connected to the inside of the connecting tube.

[0016] Compared with the prior art, the beneficial effects of this utility model are: the low-temperature regulating valve is easy to disassemble and assemble and has good sealing performance. The use of fixing bolts can achieve the purpose of quick disassembly and assembly, and the use of sealing rings can improve the sealing performance of the connection. The specific details are as follows:

[0017] (1) A fixing bolt is provided. By rotating the fixing bolt, the fixing bolt causes the slider to disengage from the groove, thereby allowing the low temperature regulating valve body to be separated from the connecting pipe, which facilitates the maintenance of the low temperature regulating valve body.

[0018] (2) A sealing ring is provided. The use of the sealing ring can make the fit between the low temperature regulating valve body and the connecting pipe sealed, thereby improving the sealing performance after the low temperature regulating valve body and the connecting pipe are connected.

[0019] (3) A protrusion is provided, and the outer end of the protrusion extends into the interior of the groove to form a locking mechanism. The groove is opened inside the connecting tube, so that the protrusion and the groove can lock together to improve the stability of the connection between the slider and the groove.

[0020] (4) A first spring is provided, which is connected to the inner end of the protrusion and the inner end of the first spring is connected to the inside of the fixing bolt, so that the first spring can limit the protrusion, thereby improving the stability of the protrusion.

[0021] (5) A second spring is provided, which is nested in the inner end of the push plate and the outer end of the second spring is connected to the inside of the connecting tube, so that the second spring can drive the push plate to reset, thereby facilitating the return of gas to the gas chamber for storage. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the connection structure between the body of the cryogenic regulating valve and the fixing bolt of this utility model;

[0023] Figure 2 This is a schematic diagram of the separation structure of the cryogenic regulating valve body and the connecting pipe of this utility model;

[0024] Figure 3 This is a schematic diagram of the connection structure between the fixing bolt and the connecting pipe of this utility model;

[0025] Figure 4 This is a schematic diagram of the connection structure between the push plate and the second spring of this utility model;

[0026] Figure 5 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0027] Figure 6 This is a schematic diagram of the protrusion and the first spring structure of this utility model.

[0028] In the diagram: 1. Low-temperature regulating valve body; 2. Connecting pipe; 3. Fixing bolt; 4. Slider; 5. Slide groove; 6. Protrusion; 7. Groove; 8. First spring; 9. Push plate; 10. Air chamber; 11. Second spring; 12. Sealing ring. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1: A cryogenic control valve designed for easy maintenance solves the problem of existing systems requiring the threaded rod to be rotated to disengage from the connecting pipe 2 for disassembly and assembly, which leads to cumbersome disassembly and assembly. By connecting the slider 4 and the groove 5, the cryogenic control valve body 1 can be easily disassembled and assembled from the connecting pipe 2, thus facilitating maintenance of the cryogenic control valve body 1. The following is disclosed:

[0031] The outer side of the low temperature regulating valve body 1 is fitted to the connecting pipe 2; a fixing bolt 3 is slidably passed through the outer end of the low temperature regulating valve body 1, and the outer end of the fixing bolt 3 extends into the interior of the connecting pipe 2, and a slider 4 is fixed to the outer end of the fixing bolt 3. The outer end of the slider 4 extends into the interior of the slide groove 5 to form a locking mechanism, and the slide groove 5 is opened inside the connecting pipe 2.

[0032] refer to Figures 1 to 5 When overhauling the cryogenic regulating valve body 1, rotating the fixing bolt 3 causes the slider 4 to rotate, allowing the slider 4 to slide inside the slide groove 5. After the fixing bolt 3 slides to its position, the slider 4 can disengage from the slide groove 5. Then, pulling the fixing bolt 3 causes the slider 4 to disengage from the slide groove 5, allowing the cryogenic regulating valve body 1 to be quickly separated from the connecting pipe 2, thus facilitating the overhaul of the cryogenic regulating valve body 1. By reversing the above operation, the cryogenic regulating valve body 1 can be quickly connected to the connecting pipe 2.

[0033] Example 2: A low-temperature regulating valve that is easy to maintain solves the problem of insufficient stability in the connection between slider 4 and slide groove 5 in Example 1. The stability of the connection between slider 4 and slide groove 5 can be improved by connecting protrusion 6 and groove 7. The following is disclosed:

[0034] The slider 4 has a sliding connection to a protrusion 6 inside, and the outer end of the protrusion 6 is set in a semi-circular shape. The outer end of the protrusion 6 extends into the interior of the groove 7 to form a locking mechanism. The groove 7 is opened inside the connecting tube 2. The inner end of the protrusion 6 is connected to a first spring 8, and the inner end of the first spring 8 is connected to the interior of the fixing bolt 3.

[0035] refer to Figures 2 to 6 When slider 4 rotates, it causes protrusion 6 to rotate, which in turn causes protrusion 6 to press against groove 7. This causes protrusion 6 to slide into slider 4 under pressure. The movement of protrusion 6 also compresses the first spring 8, causing the first spring 8 to be compressed. This causes protrusion 6 to disengage from groove 7 and, through the force of the first spring 8, pushes protrusion 6 into groove 7, thus enabling a stable connection between slider 4 and groove 5.

[0036] Example 3: A low-temperature regulating valve that is easy to maintain solves the problem of poor sealing between the existing low-temperature regulating valve body 1 and the connecting pipe 2. The sealing performance between the low-temperature regulating valve body 1 and the connecting pipe 2 can be improved by using a sealing ring 12. The following is disclosed:

[0037] The right end of the fixing bolt 3 is attached to the push plate 9, and the outer end of the push plate 9 extends into the interior of the air chamber 10. The air chamber 10 is nested inside the connecting pipe 2. The outer end of the air chamber 10 is connected to the sealing ring 12 through a pipe. The outer end of the sealing ring 12 is fixed to the connecting pipe 2. The inner end of the connecting pipe 2 is attached to the outer side of the low temperature regulating valve body 1 to form a sealing mechanism. The inner end of the push plate 9 is nested with the second spring 11, and the outer end of the second spring 11 is connected to the interior of the connecting pipe 2.

[0038] refer to Figures 2 to 5 When the cryogenic regulating valve body 1 is connected to the connecting pipe 2, the fixing bolt 3 will squeeze the push plate 9, which will then slide into the gas chamber 10 under pressure. The movement of the push plate 9 will squeeze the second spring 11, which will be compressed. The gas inside the gas chamber 10 will be compressed and sent to the sealing ring 12, which will then inflate the sealing ring 12. Thus, the sealing ring 12 can seal the gap between the cryogenic regulating valve body 1 and the connecting pipe 2. After the fixing bolt 3 is released from the pressure on the push plate 9, the second spring 11 can drive the push plate 9 to reset, which will then create a negative pressure in the gas chamber 10, allowing the gas in the sealing ring 12 to flow back into the gas chamber 10 for storage.

[0039] Working principle: When using this easy-to-maintain cryogenic regulating valve, first, refer to... Figures 1 to 5 When overhauling the cryogenic regulating valve body 1, by rotating the fixing bolt 3, the fixing bolt 3 rotates and drives the slider 4 to rotate. After the fixing bolt 3 slides to the position, the slider 4 can disengage from the groove 5. Then, by pulling the fixing bolt 3, the fixing bolt 3 can drive the slider 4 to disengage from the inside of the groove 5, which facilitates the overhaul of the cryogenic regulating valve body 1. By reversing the above operation, the cryogenic regulating valve body 1 can be quickly connected to the connecting pipe 2.

[0040] refer to Figures 2 to 6 When the slider 4 rotates, it will cause the protrusion 6 to rotate, which will then cause the protrusion 6 to press against the groove 7. The movement of the protrusion 6 will also press against the first spring 8, causing the first spring 8 to be compressed. Then, the protrusion 6 will disengage from the groove 7, allowing the slider 4 and the slide 5 to be stably connected.

[0041] refer to Figures 2 to 5When the cryogenic regulating valve body 1 is connected to the connecting pipe 2, the fixing bolt 3 will squeeze the push plate 9, which will then slide into the gas chamber 10 under pressure. The gas inside the gas chamber 10 will be compressed and transported to the sealing ring 12, which will then inflate the sealing ring 12. Therefore, the sealing ring 12 can seal the gap between the cryogenic regulating valve body 1 and the connecting pipe 2. After the fixing bolt 3 is released from the pressure on the push plate 9, the push plate 9 can generate negative pressure in the gas chamber 10, so that the gas in the sealing ring 12 can flow back into the gas chamber 10 for storage.

[0042] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A low-temperature regulating valve convenient to overhaul, comprising a low-temperature regulating valve body (1), the outer side of the low-temperature regulating valve body (1) is arranged in close contact with a connecting pipe (2); characterized in that the outer end of the low-temperature regulating valve body (1) penetrates a fixing bolt (3), the outer end of the fixing bolt (3) extends into the inside of the connecting pipe (2), the outer end of the fixing bolt (3) is fixed with a sliding block (4), the outer end of the sliding block (4) extends into the inside of a sliding groove (5) to form a clamping mechanism, and the sliding groove (5) is arranged in the inside of the connecting pipe (2).

2. A cryogenic regulator valve for easy maintenance according to claim 1, characterized in that: The inside of the sliding block (4) is slidably connected with a protruding block (6), and the outer end of the protruding block (6) is arranged in a semicircular shape.

3. A cryogenic regulator valve for easy maintenance according to claim 2, characterized in that: The outer end of the protruding block (6) extends into the inside of a recess (7) to form a clamping mechanism, and the recess (7) is arranged in the inside of the connecting pipe (2).

4. A cryogenic regulator valve for easy maintenance according to claim 2, characterized in that: The inner end of the protruding block (6) is connected with a first spring (8), and the inner end of the first spring (8) is connected in the inside of the fixing bolt (3).

5. The low temperature regulating valve of claim 1, wherein: The right end of the fixing bolt (3) is in close contact with a push plate (9), the outer end of the push plate (9) extends into the inside of an air chamber (10), and the air chamber (10) is nested in the inside of the connecting pipe (2).

6. A cryogenic regulator valve for easy maintenance according to claim 5, characterized in that: The outer end of the air chamber (10) is connected with a sealing ring (12) through a pipeline, the outer end of the sealing ring (12) is fixed on the connecting pipe (2), and the inner end of the connecting pipe (2) is in close contact with the outer side of the low-temperature regulating valve body (1) to form a sealing mechanism.

7. A cryogenic regulator valve for easy maintenance according to claim 5, characterized in that: The inner end of the push plate (9) is nested with a second spring (11), and the outer end of the second spring (11) is connected in the inside of the connecting pipe (2).

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