High pressure single seat control valve

Abstract

This utility model relates to a high-pressure single-seat regulating valve, comprising: a valve body, with connecting pipes fixedly inserted on both the left and right sides of the valve body; an outer connecting pipe on the side of the connecting pipe away from the valve body; a first flange fixedly fitted on the outer edge of the connecting pipe; a second flange fixedly fitted on the outer edge of the outer connecting pipe; several bolts between the first and second flanges; a connecting plate and two arc-shaped plates on the side of the first flange away from the second flange; several internal hexagonal grooves on the right side of the arc-shaped plates; a rotating shaft rotatably connected to the bottom of the arc-shaped plates; a connecting frame on the top of the first flange; and fixing plates fixedly connected to both the front and rear sides of the connecting frame, with through holes on the fixing plates. The advantages of this utility model are: the device eliminates the need for slotting on the flange and for custom-made flanges, significantly reducing manufacturing costs and making it suitable for widespread use.

Description

Technical Field

[0001] This utility model relates to the field of regulating valve technology, specifically to a high-pressure single-seat regulating valve. Background Technology

[0002] In industrial production, with the continuous development and improvement of automation, control valves, as terminal components in process control, are increasingly used in various industries. High-pressure single-seat control valves, as terminal components in process control, are mainly used as venting and shut-off valves.

[0003] In the prior art, Chinese Patent Publication No. CN213420040U discloses a single-seat control valve with good sealing performance, including a control valve docking mechanism. The control valve docking mechanism includes a valve body, a docking body, and a reinforcing body. The docking body is symmetrically fixedly installed at the lower end of the valve body, and its internal space is connected to the internal space of the valve body. The docking body and the reinforcing body are fixedly installed together. The docking body includes a connecting pipe, a first flange, a second flange, a connecting pipe, a groove, and a sliding groove. The side end of the connecting pipe is fixedly connected to the side end of the first flange, and the first flange and the second flange are engaged and matched. One end of the connecting pipe is fixedly connected to the side end of the second flange, and the first flange and the second flange are sealed and squeezed together. This can improve installation efficiency while ensuring good sealing performance and better meet the needs of use. However, in actual use, this device requires the groove and sliding groove to be opened on the existing flange, that is, the flange needs to be re-processed and customized. This will increase the manufacturing cost of the valve and is not suitable for widespread use. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application proposes a high-pressure single-seat regulating valve. This device eliminates the need for slotting on the flange and for customizing the flange separately, significantly reducing manufacturing costs and making it suitable for widespread use.

[0005] This utility model provides the following technical solution: a high-pressure single-seat regulating valve, comprising: a valve body, connecting pipes fixedly inserted on both the left and right sides of the valve body, an outer connecting pipe on the side of the connecting pipe away from the valve body, a first flange fixedly fitted on the outer edge of the connecting pipe, a second flange fixedly fitted on the outer edge of the outer connecting pipe, several bolts between the first flange and the second flange, a connecting plate and two arc-shaped plates on the side of the first flange away from the second flange, several internal hexagonal grooves on the right side of the arc-shaped plates, a rotating shaft rotatably connected near the bottom of the arc-shaped plates, a connecting frame on the top of the first flange, fixing plates fixedly connected on both the front and rear sides of the connecting frame, through holes on the fixing plates, threaded holes on the side wall of the connecting frame, a threaded rod penetrating through the inner cavity of the threaded hole, a movable plate rotatably connected to one end of the threaded rod, an insert rod fixedly connected to the side wall of the movable plate, and an insert hole on the side wall of the arc-shaped plates.

[0006] As a preferred embodiment of this utility model, the bolts movably pass through the first flange and the second flange, wherein two bolts movably pass through adjacent through holes.

[0007] As a preferred embodiment of this utility model, a plurality of internal hexagonal grooves are arranged in an arc-shaped array, and the internal hexagonal grooves are matched with the nuts of the bolts.

[0008] As a preferred embodiment of this utility model, the connecting plate is located at the bottom of the connecting pipe, and the rotating shaft is fixedly inserted through the connecting plate.

[0009] As a preferred embodiment of this utility model, the threaded rod is threadedly connected to the threaded hole, and an operating rod is fixedly connected to the end of the threaded rod away from the movable plate.

[0010] As a preferred embodiment of this utility model, the insertion rod is movably inserted into the inner cavity of an adjacent insertion hole, and the two insertion rods are arranged symmetrically about the central axis of the movable plate.

[0011] As a preferred embodiment of this utility model, the inner side of the connecting frame is in contact with the side wall of the second flange, and the cross-section of the connecting frame is U-shaped.

[0012] The beneficial effects of this utility model are:

[0013] 1. In this utility model, the device assembles two arc-shaped plates on one side of the first flange, and the arc-shaped plates have internal hexagonal grooves on their sidewalls. The bolt nuts are restricted by the internal hexagonal grooves, so only the nuts on the bolts need to be tightened separately, which makes the assembly of the external pipe more convenient. The device does not require slotting on the flange or customizing the flange separately, which greatly reduces the manufacturing cost and is suitable for widespread use.

[0014] 2. In this utility model, when assembling the arc plate, the device can limit the arc plate through the insertion rod and insertion hole, so that the arc plate can be firmly pressed and fixed on one side of the first flange, which has higher stability and prevents the nut part of the bolt from rotating when tightening the nut on the bolt, thereby ensuring the normal progress of the external pipe assembly work. Attached Figure Description

[0015] Figure 1 This is a frontal perspective view of the present invention;

[0016] Figure 2 This is a front perspective view of the connecting pipe and the outer pipe of this utility model.

[0017] Figure 3 This is a front perspective view of the first flange and the second flange of the present invention.

[0018] Figure 4 This is a frontal perspective view of the arc-shaped plate, a component of this utility model.

[0019] Figure 5 This is a left perspective view of the arc-shaped plate of the component of this utility model;

[0020] Figure 6 This is a left perspective view of the connecting plate of the component of this utility model;

[0021] Figure 7 This is a left perspective view of the component connecting frame of this utility model;

[0022] In the diagram: 1. Valve body; 2. Connecting pipe; 3. External connecting pipe; 4. First flange; 5. Second flange; 6. Bolt; 7. Arc plate; 8. Connecting plate; 9. Shaft; 10. Hexagonal recess; 11. Connecting bracket; 12. Fixing plate; 13. Through hole; 14. Screw hole; 15. Threaded rod; 16. Operating lever; 17. Movable plate; 18. Insert rod; 19. Insertion hole. Detailed Implementation

[0023] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Example 1

[0025] like Figures 1 to 5 As shown, a high-pressure single-seat regulating valve includes: a valve body 1, with connecting pipes 2 fixedly inserted on both the left and right sides of the valve body 1. An outer connecting pipe 3 is provided on the side of the connecting pipe 2 away from the valve body 1. A first flange 4 is fixedly fitted onto the outer edge of the connecting pipe 2, and a second flange 5 is fixedly fitted onto the outer edge of the outer connecting pipe 3. Several bolts 6 are provided between the first flange 4 and the second flange 5, and the bolts 6 movably pass through the first flange 4 and the second flange 5. A connecting plate 8 and two arc-shaped plates 7 are provided on the side of the first flange 4 away from the second flange 5. Several internal hexagonal grooves 10 are provided on the right side of the arc-shaped plates 7, arranged in an arc-shaped array. The internal hexagonal grooves 10 match the nuts of the bolts 6. A rotating shaft 9 is rotatably connected to the arc-shaped plates 7 near the bottom. The connecting plate 8 is located at the bottom of the connecting pipe 2, and the rotating shaft 9 is fixedly inserted through the connecting plate 8.

[0026] In this embodiment, a connecting frame 11 is provided on the top of the first flange 4. The inner side of the connecting frame 11 is in contact with the side wall of the second flange 5. The cross-section of the connecting frame 11 is U-shaped. Fixing plates 12 are fixedly connected to both the front and rear sides of the connecting frame 11. Through holes 13 are provided on the fixing plates 12, and two bolts 6 are movably passed through the adjacent through holes 13. Threaded holes 14 are provided on the side wall of the connecting frame 11. A threaded rod 15 is passed through the inner cavity of the threaded hole 14. A movable plate 17 is rotatably connected to one end of the threaded rod 15. The threaded rod 15 is threadedly connected to the threaded hole 14. An operating rod 16 is fixedly connected to the end of the threaded rod 15 away from the movable plate 17.

[0027] When connecting valve body 1 to outer pipe 3, first move outer pipe 3. Outer pipe 3 moves second flange 5 to one side of first flange 4, where they are in contact. Then move connecting bracket 11 to the top of first flange 4 and second flange 5, ensuring the inner side of connecting bracket 11 is in contact with the side wall of second flange 5. Simultaneously, align the through hole 13 on fixing plate 12 with the mounting hole on second flange 5. Then move bolt 6 through first flange 4 and second flange 5, with two bolts 6 passing through adjacent through holes 13. Then, put nuts on bolt 6, but do not tighten them. At this point, there is no need to support outer pipe 3. Then move arc plate 7 to the outside of connecting pipe 2, and then to the inside of connecting bracket 11, aligning insertion hole 19 with insertion rod 18, and aligning bolt 6... The nut is inserted into the corresponding internal hexagonal recess 10. Then, the arc plate 7 is kept in contact with the side wall of the first flange 4. Then, the threaded rod 15 is rotated by the operating rod 16. The threaded rod 15 rotates in the internal cavity of the threaded hole 14. Under the action of the thread, the threaded rod 15 drives the movable plate 17 to move towards the arc plate 7. When the movable plate 17 is about to contact the arc plate 7, the movable plate 17 is held to prevent it from rotating with the threaded rod 15. The movable plate 17 continues to move with the threaded rod 15. The movable plate 17 drives the insertion rod 18 to move into the internal cavity of the insertion hole 19. In this way, the arc plate 7 is pressed and fixed on one side of the first flange 4. The connecting bracket 11 also presses the second flange 5 against one side of the first flange 4. The nut part of the bolt 6 is restricted by the internal hexagonal recess 10. Only the nut on the bolt 6 needs to be tightened, which makes the assembly of the outer pipe 3 more convenient.

[0028] Example 2

[0029] like Figure 6 and Figure 7 As shown, a plug rod 18 is fixedly connected to the side wall of the movable plate 17, and a plug hole 19 is opened on the side wall of the arc plate 7. The plug rod 18 is movably inserted into the inner cavity of the adjacent plug hole 19. The two plug rods 18 are arranged symmetrically about the central axis of the movable plate 17.

[0030] When assembling the arc plate 7, the device can limit the arc plate 7 through the insertion rod 18 and the insertion hole 19, so that the arc plate 7 can be firmly pressed and fixed on one side of the first flange 4, which is more stable and prevents the nut part of the bolt 6 from rotating when tightening the nut on the bolt 6, thereby ensuring the normal progress of the assembly of the outer pipe 3.

[0031] Implementation Plan: During use, when it is necessary to connect the valve body 1 to the outer pipe 3, first move the outer pipe 3. The outer pipe 3 will move the second flange 5 to one side of the first flange 4 so that they are in contact. Then move the connecting bracket 11 to the top of the first flange 4 and the second flange 5, so that the inner side of the connecting bracket 11 is in contact with the side wall of the second flange 5. At the same time, make the through hole 13 on the fixing plate 12 correspond to the mounting hole on the second flange 5. Then move the bolt 6 through the first flange 4 and the second flange 5, with two bolts 6 passing through adjacent through holes 13. Then put nuts on the bolts 6, but do not tighten the nuts. At this time, there is no need to support the outer pipe 3. Then move the arc plate 7 to wrap around the outside of the connecting pipe 2. The arc plate 7 moves to the inside of the connecting bracket 11 so that the insertion hole 19 corresponds to the insertion rod 18. The nut of bolt 6 is inserted into the corresponding internal hexagonal recess 10. Then, the arc plate 7 is kept in contact with the side wall of the first flange 4. Then, the threaded rod 15 is rotated by the operating rod 16. The threaded rod 15 rotates in the internal cavity of the threaded hole 14. Under the action of the thread, the threaded rod 15 drives the movable plate 17 to move towards the arc plate 7. When the movable plate 17 is about to contact the arc plate 7, the movable plate 17 is held to prevent it from rotating with the threaded rod 15. The movable plate 17 continues to move with the threaded rod 15. The movable plate 17 drives the insertion rod 18 to move into the internal cavity of the insertion hole 19. In this way, the arc plate 7 is pressed and fixed to one side of the first flange 4. The connecting bracket 11 also presses the second flange 5 against one side of the first flange 4. The nut of bolt 6 is restricted by the internal hexagonal recess 10. Only the nut on bolt 6 needs to be tightened, which makes the assembly of the outer pipe 3 more convenient.

[0032] The device assembles two arc-shaped plates 7 on one side of the first flange 4, and the arc-shaped plates 7 have internal hexagonal grooves 10 on their side walls. The nuts of the bolts 6 are restricted by the internal hexagonal grooves 10, so only the nuts on the bolts 6 need to be tightened. This makes the assembly of the outer pipe 3 more convenient. The device does not require slotting on the flange or customizing the flange separately, which greatly reduces the manufacturing cost and is suitable for widespread use.

[0033] When assembling the arc plate 7, the device can limit the arc plate 7 through the insertion rod 18 and the insertion hole 19, so that the arc plate 7 can be firmly pressed and fixed on one side of the first flange 4, which is more stable and prevents the nut part of the bolt 6 from rotating when tightening the nut on the bolt 6, thereby ensuring the normal progress of the assembly of the outer pipe 3.

[0034] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0035] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A high-pressure single-seat regulating valve, characterized in that, include: The valve body has connecting pipes fixedly inserted on both its left and right sides. An external connecting pipe is located on the side of the connecting pipe furthest from the valve body. A first flange is fixedly fitted onto the outer edge of the connecting pipe, and a second flange is fixedly fitted onto the outer edge of the external connecting pipe. Several bolts are installed between the first and second flanges. A connecting plate and two arc-shaped plates are located on the side of the first flange furthest from the second flange. Several internal hexagonal grooves are opened on the right side of the arc-shaped plates. A rotating shaft is rotatably connected to the bottom of the arc-shaped plates. A connecting frame is located on the top of the first flange. Fixed plates are fixedly connected to both the front and rear sides of the connecting frame. Through holes are opened on the fixed plates. Threaded holes are opened on the side walls of the connecting frame. A threaded rod passes through the inner cavity of the threaded hole. A movable plate is rotatably connected to one end of the threaded rod. An insert rod is fixedly connected to the side wall of the movable plate. Insert holes are opened on the side walls of the arc-shaped plates.

2. The high-pressure single-seat regulating valve according to claim 1, characterized in that, Bolts move through the first flange and the second flange, with two bolts moving through adjacent perforations.

3. A high-pressure single-seat regulating valve according to claim 1, characterized in that, Several internal hexagonal recesses are arranged in an arc-shaped array, and the internal hexagonal recesses match the nuts of the bolts.

4. A high-pressure single-seat regulating valve according to claim 1, characterized in that, The connecting plate is located at the bottom of the connecting pipe, and the rotating shaft is fixed through the connecting plate.

5. A high-pressure single-seat regulating valve according to claim 1, characterized in that, The threaded rod is threaded into the threaded hole, and an operating lever is fixedly connected to the end of the threaded rod away from the movable plate.

6. A high-pressure single-seat regulating valve according to claim 1, characterized in that, The insertion rods are movably inserted into the inner cavities of adjacent insertion holes, and the two insertion rods are arranged symmetrically about the central axis of the movable plate.

7. A high-pressure single-seat regulating valve according to claim 1, characterized in that, The inner side of the connecting frame fits into the side wall of the second flange, and the cross-section of the connecting frame is U-shaped.

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