Pneumatic angular multi-stage pressure reduction removable low-temperature regulating valve

Abstract

The utility model discloses a pneumatic angular multistage depressurization removable low-temperature regulating valve, which belongs to the field of regulating valves and comprises a valve body, communicating pipes are fixedly connected to two sides of the valve body, first flanges are fixedly connected to the outer ends of the communicating pipes, a valve rod is fixedly connected to the middle of the valve body, and an actuator is movably mounted on the upper portion of the valve rod. By means of the filtering mechanism, fluid media can be conveniently filtered, the problems that the sealing performance in the valve body is reduced or the valve body is blocked due to the fact that dirt is accumulated in the valve body are solved, the sealing cover is detached, liquid in the pipe is flushed out through the filtering cage, the side connecting pipe and the connecting pipe, and the dirt is flushed out. The filter mechanism is more convenient to clean, dirt in the filter cage is convenient to pull out, when the filter cage needs to be replaced, the connecting pipe is moved upwards, and after the fixed state of the filter cage is released, the filter cage can be pulled out of the connecting pipe, so that the filter cage is convenient to replace and mount.

Description

Technical Field

[0001] The utility model relates to the field of regulating valves, in particular to a pneumatic angular multi-stage pressure-reducing extractable low-temperature regulating valve. Background Art

[0002] The pneumatic angle multi-stage pressure reduction removable low-temperature regulating valve is a regulating valve used in low-temperature and deep-cold occasions. It adopts a long-necked valve stem for insulation and is equipped with a multi-spring actuator. It has the advantages of compact overall structure, light weight, and good stability. The valve body adopts a precision casting angle structure, and the material is aluminum alloy, which has good low-temperature resistance. In the prior art, the Chinese utility model type patent with the public document number: CN214578882U and the patent name "A low-temperature self-operated regulating valve" discloses a low-temperature regulating valve. The document records that it is convenient to install and disassemble the regulating mechanism, which reduces labor. At the same time, when in use, it has stronger stability, improves the regulating effect, and greatly improves practicality. There is no filtering structure in the water inlet channel and the water outlet channel in this scheme. After long-term use, dirt is easily accumulated in the valve body, resulting in reduced sealing or clogging of the pipeline. The traditional dirt cleaning requires the regulating valve to be disassembled from the pipeline, which is cumbersome to operate and inconvenient to use, so it needs to be improved. Utility Model Content

[0003] The main purpose of the utility model is to provide a pneumatic angular multi-stage pressure-reducing extractable low-temperature regulating valve, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A pneumatic angular multi-stage pressure-reducing extractable low-temperature regulating valve comprises a valve body, connecting pipes are fixedly connected at both sides of the valve body, a No. 1 flange is fixedly connected at the outer end of the connecting pipe, a valve stem is fixedly connected at the middle position of the valve body, an actuator is movably installed at the upper position of the valve stem, a filtering mechanism is movably installed on the connecting pipe, the filtering mechanism comprises a No. 1 connecting ring, a No. 2 connecting ring, a connecting pipe, a hexagonal extrusion platform, a lower extrusion platform, a filter cage, a No. 2 flange, a side pipe and a sealing cover, the No. 1 connecting ring and the No. 2 connecting ring are fixedly connected to the valve body, the No. 2 connecting ring is located at the center of the No. 1 connecting ring, and the No. 2 connecting ring is fixedly connected to the connecting pipe, the connecting pipe is movably installed in the No. 2 connecting ring, the hexagonal extrusion platform and the lower extrusion platform are fixedly connected to the upper and lower ends of the connecting pipe, the No. 2 flange is fixedly connected to one side of the filter cage, the side pipe is fixedly connected to the side of the filter cage, the filter cage is movably installed in the connecting pipe, and the sealing cover is movably installed with the No. 1 connecting ring.

[0006] Preferably, the filtering mechanism further comprises an upper connecting platform and a No. 1 sealing ring, wherein the upper connecting platform is fixedly connected to the upper position of the No. 2 connecting ring, and the No. 1 sealing ring is fixedly connected to the upper connecting platform.

[0007] Preferably, the filtering mechanism further comprises a lower connecting platform and a No. 2 sealing ring, wherein the lower connecting platform is fixedly connected to the side connecting pipe, and the No. 2 sealing ring is fixedly connected to the lower connecting platform.

[0008] Preferably, the connecting pipe is movably installed with the No. 2 connecting ring through threads, the side pipe is movably installed in the connecting pipe, the hexagonal extrusion platform extrude the No. 1 sealing ring downward, and the lower extrusion platform extrude the No. 2 sealing ring downward.

[0009] Preferably, the filtering mechanism further comprises a connecting groove, the connecting groove is provided on the No. 1 flange, and the No. 2 flange is movably installed in the connecting groove.

[0010] Preferably, the filtering mechanism further comprises a rubber plug, the sealing cover is movably mounted with a No. 1 connecting ring via a thread, the rubber plug is fixedly connected in the sealing cover, and the rubber plug is inserted into the connecting pipe.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In the utility model, through the filter mechanism, filter cages are movably installed in the connecting pipes on both sides of the valve body, which is convenient for filtering the fluid medium and avoids dirt accumulation in the valve body, causing problems such as reduced sealing performance or blockage in the valve body;

[0013] In the utility model, when there is a lot of dirt in the filter cage and it is necessary to clean the dirt, the sealing cover is disassembled, so that the liquid in the pipe is flushed out to the outside through the filter cage, the side pipe and the connecting pipe, and the filter cage is flushed out by the water flow, so that the cleaning of the filter mechanism is more convenient;

[0014] In the utility model, when the filter cage needs to be replaced after long-term use, the connecting pipe is moved upward, the fixation of the filter cage is released, the No. 1 flange is disassembled, and the filter cage is pulled out from the connecting pipe to achieve the pull-out disassembly, so that the filter cage structure is easy to disassemble and replace. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 It is a cross-sectional structural schematic diagram of the connecting pipe of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the filter cage of the utility model;

[0018] Figure 4 It is a schematic cross-sectional structure diagram of the sealing cover of the utility model.

[0019] In the figure: 1. valve body; 2. connecting pipe; 3. No. 1 flange; 4. valve stem; 5. actuator; 6. filtering mechanism; 601. No. 1 connecting ring; 602. No. 2 connecting ring; 603. upper connecting platform; 604. connecting pipe; 605. hexagonal extrusion platform; 606. lower extrusion platform; 607. No. 1 sealing ring; 608. filter cage; 609. No. 2 flange; 610. connecting groove; 611. side pipe; 612. lower connecting platform; 613. No. 2 sealing ring; 614. sealing cover; 615. rubber plug. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1-2As shown, a pneumatic angular multi-stage pressure-reducing extractable low-temperature regulating valve comprises a valve body 1, connecting pipes 2 are fixedly connected to both sides of the valve body 1, a No. 1 flange 3 is fixedly connected to the outer end of the connecting pipe 2, a valve stem 4 is fixedly connected to the middle of the valve body 1, an actuator 5 is movably installed on the upper position of the valve stem 4, a filter mechanism 6 is movably installed on the connecting pipe 2, and the filter mechanism 6 comprises a No. 1 connecting ring 601, a No. 2 connecting ring 602, a connecting pipe 604, a hexagonal extrusion platform 605, a lower extrusion platform 606, a filter cage 608, a No. 2 flange 609, a side pipe 611 and a sealing cover 614, the No. 1 connecting ring 601, the No. 2 connecting ring 602, a connecting pipe 604, a hexagonal extrusion platform 605, a lower extrusion platform 606, a filter cage 608, a No. 2 flange 609, a side pipe 611 and a sealing cover 614, The connecting ring 602 is fixedly connected to the valve body 1, the second connecting ring 602 is located at the center of the first connecting ring 601, and the second connecting ring 602 is fixedly connected to the connecting pipe 2, and the connecting pipe 604 is movably installed in the second connecting ring 602. The hexagonal extrusion platform 605 and the lower extrusion platform 606 are fixedly connected to the upper end and the lower end of the connecting pipe 604. The sealing cover 614 is movably installed with the first connecting ring 601. The filtering mechanism 6 also includes an upper connecting platform 603 and a first sealing ring 607. The upper connecting platform 603 is fixedly connected to the upper position of the second connecting ring 602, and the first sealing ring 607 is fixedly connected to the upper connecting platform 603. The filtering mechanism 6 also includes a lower connecting platform 612 and a No. 2 sealing ring 613. The lower connecting platform 612 is fixedly connected to the side pipe 611. The No. 2 sealing ring 613 is fixedly connected to the lower connecting platform 612. The connecting pipe 604 is movably installed with the No. 2 connecting ring 602 through a thread. The side pipe 611 is movably installed in the connecting pipe 604. The hexagonal extrusion platform 605 squeezes the No. 1 sealing ring 607 downward, and the lower extrusion platform 606 squeezes the No. 2 sealing ring 613 downward. The connecting pipe 604 is rotated through the thread so that the lower end of the connecting pipe 604 inserts the side pipe 611 into the internal position. When the lower extrusion platform 606 and the No. 2 sealing ring on the lower connecting platform 612 are connected, the connecting pipe 604 is connected to the No. 2 connecting ring 602. When the No. 1 sealing rings 613 contact each other, the hexagonal extrusion platform 605 contacts the No. 1 sealing ring 607 on the upper connecting platform 603 at the same time, and the connecting pipe 604 continues to be rotated, so that the connecting pipe 604 is sealed and installed in the No. 2 connecting ring 602, and the connecting pipe 604 is connected with the side connecting pipe 611, and the connecting pipe 604 is moved upward, so that the lower extrusion platform 606 and the No. 2 sealing ring 613 and the side connecting pipe 611 are separated from each other, thereby releasing the fixing state of the connecting pipe 604 on the filter cage 608. After the No. 1 flange 3 is disassembled, it is convenient to draw the filter cage 608 out of the connecting pipe 2, so that the filter cage 608 is easy to replace and install.

[0022] like Figure 1 , Figure 3 and Figure 4As shown, the No. 2 flange 609 is fixedly connected to a side position of the filter cage 608, the side pipe 611 is fixedly connected to a side position of the filter cage 608, the filter cage 608 is movably installed in the connecting pipe 2, the filter mechanism 6 also includes a connecting groove 610, the connecting groove 610 is arranged on the No. 1 flange 3, the No. 2 flange 609 is movably installed in the connecting groove 610, the filter mechanism 6 also includes a rubber plug 615, the sealing cover 614 is movably installed with the No. 1 connecting ring 601 through a thread, the rubber plug 615 is fixedly connected in the sealing cover 614, and the rubber plug 615 is inserted into the connecting pipe 604, the filter cage 608 is fixedly connected in the filter cage 608, and the fluid medium is filtered through the filter holes set on the filter cage 608, so that the fluid medium entering the valve body 1 is easy to be filtered and processed to avoid pipeline blockage.

[0023] It should be noted that the utility model is a pneumatic angular multi-stage pressure-reducing removable low-temperature regulating valve. The filter cage 608 is movably installed in the connecting pipe 2, and the No. 2 flange 609 is movably installed in the connecting groove 610 of the No. 1 flange 3. When the No. 1 flange 3 is connected to the external flange, the filter cage 608 is fixedly connected to the filter cage 608, and the fluid medium is filtered through the filter holes set on the filter cage 608 to prevent dirt and impurities from accumulating in the structure inside the valve body 1, causing the sealing performance to be reduced or the pipeline to be blocked. Dirt accumulates in the filter cage 608, and the side pipe 611 on the side of the filter cage 608 corresponds to the position of the No. 2 connecting ring 602. The connecting pipe 604 is rotated through the thread to make the pipe body at the lower end of the connecting pipe 604 move downward, and the side pipe 611 is gradually inserted into the internal position, and the lower extrusion platform 606 and the lower connecting platform 612 are connected. When the No. 2 sealing ring 613 contacts each other, the hexagonal extrusion platform 605 contacts the No. 1 sealing ring 607 on the upper connecting platform 603 at the same time, and the connecting pipe 604 continues to rotate, so that the connecting pipe 604 is sealed and installed in the No. 2 connecting ring 602, and the connecting pipe 604 is connected to the side pipe 611. The rubber plug 615 is inserted into the connecting pipe 604, and the rubber plug 615 is fixed by the installation of the sealing cover 614 and the No. 1 connecting ring 601 to prevent it from falling off. When it is necessary to clean the dirt in the filter cage 608, the sealing cover 614 is rotated and removed from the No. 1 connecting ring 601, so that the fluid medium rushes out through the filter cage 608, the side pipe 611 and the connecting pipe 604. The side pipe 611 is close to the bottom position of the filter cage 608, which is convenient for flushing the dirt in the filter cage 608 and taking the dirt out, making it easier to clean the filter mechanism 6.

[0024] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. It is only a preferred embodiment of the utility model, and its description is more specific and detailed, but it cannot be understood as limiting the scope of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The embodiments can be changed, modified, replaced and deformed without departing from the principle and purpose of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A pneumatic angular multi-stage pressure-reducing extractable low-temperature regulating valve, comprising a valve body (1), connecting pipes (2) are fixedly connected to both sides of the valve body (1), a No. 1 flange (3) is fixedly connected to the outer end of the connecting pipe (2), a valve stem (4) is fixedly connected to the middle of the valve body (1), and an actuator (5) is movably mounted on the upper part of the valve stem (4), characterized in that: A filtering mechanism (6) is movably mounted on the connecting pipe (2), and the filtering mechanism (6) comprises a No. 1 connecting ring (601), a No. 2 connecting ring (602), a connecting pipe (604), a hexagonal extrusion platform (605), a lower extrusion platform (606), a filtering cage (608), a No. 2 flange (609), a side pipe (611), and a sealing cover (614). The No. 1 connecting ring (601) and the No. 2 connecting ring (602) are fixedly connected to the valve body (1), the No. 2 connecting ring (602) is located at the center of the No. 1 connecting ring (601), and the No. 2 connecting ring (602) is located at the center of the No. 1 connecting ring (601). (602) is fixedly connected to the connecting pipe (2), the connecting pipe (604) is movably installed in the second connecting ring (602), the hexagonal extrusion platform (605) and the lower extrusion platform (606) are fixedly connected to the upper end and the lower end of the connecting pipe (604), the second flange (609) is fixedly connected to a side position of the filter cage (608), the side pipe (611) is fixedly connected to a side position of the filter cage (608), the filter cage (608) is movably installed in the connecting pipe (2), and the sealing cover (614) is movably installed with the first connecting ring (601).

2. The pneumatic angle multi-stage pressure-reducing extractable low-temperature regulating valve according to claim 1, characterized in that: The filtering mechanism (6) further comprises an upper connecting platform (603) and a first sealing ring (607); the upper connecting platform (603) is fixedly connected to the upper position of the second connecting ring (602); and the first sealing ring (607) is fixedly connected to the upper connecting platform (603).

3. The pneumatic angle multi-stage pressure-reducing extractable low-temperature regulating valve according to claim 2, characterized in that: The filtering mechanism (6) further comprises a lower connecting platform (612) and a second sealing ring (613); the lower connecting platform (612) is fixedly connected to the side pipe (611); and the second sealing ring (613) is fixedly connected to the lower connecting platform (612).

4. The pneumatic angular multi-stage pressure-reducing extractable low-temperature regulating valve according to claim 3, characterized in that: The connecting pipe (604) is movably mounted with the second connecting ring (602) via threads, the side pipe (611) is movably mounted in the connecting pipe (604), the hexagonal extrusion platform (605) extrudes the first sealing ring (607) downwards, and the lower extrusion platform (606) extrudes the second sealing ring (613) downwards.

5. The pneumatic angle multi-stage pressure-reducing extractable low-temperature regulating valve according to claim 4, characterized in that: The filtering mechanism (6) further comprises a connecting groove (610), wherein the connecting groove (610) is provided on the No. 1 flange (3), and the No. 2 flange (609) is movably mounted in the connecting groove (610).

6. The pneumatic angle multi-stage pressure-reducing extractable low-temperature regulating valve according to claim 5, characterized in that: The filtering mechanism (6) further comprises a rubber plug (615), the sealing cover (614) is movably mounted with the No. 1 connecting ring (601) via threads, the rubber plug (615) is fixedly connected in the sealing cover (614), and the rubber plug (615) is inserted into the connecting pipe (604).

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