Pressure reducing valve capable of improving sealing performance

Abstract

The utility model discloses a pressure reducing valve capable of improving sealing performance, and relates to the technical field of pressure reducing valves. According to the pressure reducing valve capable of improving sealing, by arranging the mounting box, the gear ring, the gear teeth, the first gear, a second gear, a moving plate, a fixing groove and a first sliding groove, the function of improving the sealing performance of the connecting position of the pressure reducing valve body and a connecting pipeline is achieved, a rotary disc rotates to drive the first gear to rotate, and the first gear drives the gear ring to rotate through the gear teeth; the gear ring drives a second gear to rotate while rotating, the second gear rotates to drive a moving plate on one side to rotate until a sealing layer in the moving plate makes contact with two sets of flange plates, and the two sets of flange plates are located in a fixing groove in one side of the moving plate. Connection between the pressure reducing valve body and the connecting pipeline is enhanced, and meanwhile leakage at the joint of the pressure reducing valve body and the connecting pipeline is prevented.

Description

Technical Field

[0001] This utility model relates to the field of pressure reducing valve technology, specifically a pressure reducing valve that improves sealing. Background Technology

[0002] A pressure reducing valve is a valve that reduces the inlet pressure to a desired outlet pressure by adjusting the pressure, and automatically maintains a stable outlet pressure by relying on the energy of the medium itself. From a fluid mechanics perspective, a pressure reducing valve is a throttling element with variable local resistance. That is, by changing the throttling area, the flow velocity and kinetic energy of the fluid are altered, resulting in different pressure losses, thereby achieving the purpose of pressure reduction. Most existing pressure reducing valves are connected to pipelines using flanges, and the sealing effect is provided only by the seal of a single sealing ring between the two pipe joints. When the connection between the pipeline and the pressure reducing valve becomes loose, the sealing ring cannot function, leading to leakage at the connection between the pipeline and the pressure reducing valve, which can easily cause the leakage of hazardous gases or liquids. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a pressure-reducing valve with improved sealing, thereby solving the problems mentioned in the background section:

[0004] Most existing pressure reducing valves are connected to pipelines using flanges, and the sealing effect is provided only by the seal of a single sealing ring between the two pipe joints. When the connection between the pipeline and the pressure reducing valve becomes loose, the sealing ring cannot function, leading to leakage at the connection between the pipeline and the pressure reducing valve, which can easily cause the leakage of dangerous gases or liquids.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A pressure reducing valve for improved sealing includes a pressure reducing valve body. One end of the pressure reducing valve body is fixedly connected to a connecting pipe via a flange plate. An installation box is provided on the outside of the connection between the pressure reducing valve body and the connecting pipe. A gear ring is rotatably connected inside the installation box. A first sliding groove penetrating the surface of the installation box is opened on one side. Multiple gear teeth are fixedly connected to one side of the gear ring located in the first sliding groove. A first gear is rotatably connected to the outside of the installation box. One side of the first gear meshes with the gear teeth. A second gear is rotatably connected to the inside of the installation box. A movable plate is fixedly connected to one side of the second gear. One side of the second gear meshes with the gear ring. A fixed groove is opened on one side of the movable plate.

[0007] Preferably, a turntable is fixedly connected to one side center of the first gear via a rotating rod.

[0008] Preferably, one side of the turntable has multiple connecting holes that penetrate its surface.

[0009] Preferably, the mounting box has a fixed rod that is slidably connected inside.

[0010] Preferably, a spring is fixedly connected to one end of the fixing rod and the mounting box.

[0011] Preferably, the inner wall of the mounting box is provided with a second sliding groove on both sides, and a slider is symmetrically fixedly connected to the outer side of the fixing rod, and the outer side of the slider is slidably connected to the second sliding groove.

[0012] This invention provides a pressure reducing valve that improves sealing. Compared with the prior art, it has the following advantages:

[0013] 1. This pressure-reducing valve with improved sealing achieves enhanced sealing at the connection between the pressure-reducing valve body and the connecting pipeline by setting up an installation box, a gear ring, gear teeth, a first gear, a second gear, a movable plate, a fixed groove, and a first sliding groove. The rotation of the turntable drives the first gear to rotate, which in turn drives the gear ring to rotate. The rotation of the gear ring drives the second gear to rotate, which in turn drives the movable plate on one side to rotate until the sealing layer inside the movable plate contacts the two sets of flange plates. This places the two sets of flange plates in the fixed groove on one side of the movable plate, enhancing the connection between the pressure-reducing valve body and the connecting pipeline while preventing leakage at the connection between the pressure-reducing valve body and the connecting pipeline.

[0014] 2. This pressure-reducing valve with improved sealing achieves the function of fixing the turntable by setting up a turntable, connecting hole, fixing rod, spring, mounting box, second slide groove and slider. When the turntable rotates to the appropriate position, the appropriate connecting hole moves to one side of the fixing rod. The fixing rod loses its pressing force and enters the connecting hole under the action of the spring, fixing the position of the turntable and preventing the turntable from rotating during use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the internal structure of the mounting box of this utility model. Figure 1 ;

[0018] Figure 4 This is a schematic diagram of the internal structure of the mounting box of this utility model. Figure 2 ;

[0019] Figure 5 This is an enlarged structural diagram of part A of this utility model.

[0020] In the diagram: 1. Pressure reducing valve body; 2. Connecting pipe; 3. Mounting box; 4. Gear ring; 5. Gear teeth; 6. First gear; 7. Turntable; 8. Second gear; 9. Moving plate; 10. Fixed groove; 11. First slide groove; 12. Fixed rod; 13. Spring; 14. Second slide groove; 15. Sliding block; 16. Flange plate; 17. Connecting hole. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-5 This utility model provides a technical solution: a pressure reducing valve for improved sealing, comprising a pressure reducing valve body 1, one end of which is fixedly connected to a connecting pipe 2 via a flange plate 16. Both one end of the pressure reducing valve body 1 and one end of the connecting pipe 2 are fixedly connected to flange plates 16. The two sets of flange plates 16 are fixedly connected by bolts, connecting the pressure reducing valve body 1 and the connecting pipe 2 together. A mounting box 3 is provided on the outside of the connection between the pressure reducing valve body 1 and the connecting pipe 2. The mounting box 3 is slidably connected to the outside of the pressure reducing valve body 1. Holes are provided on both sides of the mounting box 3, with one side of the hole being larger than the other to allow the flange plate 16 to pass through. A gear ring 4 is rotatably connected inside the mounting box 3, rotating within the mounting box 3 to maintain stability during rotation. A first groove 11 penetrating the surface of the mounting box 3 is provided on one side. Multiple gear teeth 5 are fixedly connected to the side of the gear ring 4 located within the first groove 11. The moving gear 4 rotates, and the outer side of the mounting box 3 is rotatably connected to the first gear 6, which is located on one side of the first slide groove 11. One side of the first gear 6 meshes with the gear teeth 5. The rotation of the first gear 6 moves the gear teeth 5. The inside of the mounting box 3 is rotatably connected to the second gear 8, and one side of the second gear 8 is fixedly connected to the moving plate 9. The rotation of the second gear 8 moves the moving plate 9, and one side of the second gear 8 meshes with the gear ring 4. The rotation of the gear ring 4 moves the second gear 8. A fixing groove 10 is opened on one side of the moving plate 9. The moving plate 9 moves the fixing groove 10, fixing the two sets of flange plates 16 in the fixing groove 10. The inner wall surface of the fixing groove 10 is provided with a sealing layer, which prevents the pressure reducing valve body 1 and the connecting pipe 2 from loosening during use, while enhancing the sealing of the connection between the pressure reducing valve body 1 and the connecting pipe 2 and preventing leakage at the connection between the pressure reducing valve body 1 and the connecting pipe 2.

[0023] Furthermore, a turntable 7 is fixedly connected to one side center of the first gear 6 via a rotating rod, and the rotation of the turntable 7 causes the first gear 6 to rotate.

[0024] Furthermore, a plurality of connecting holes 17 are provided on one side of the turntable 7, which penetrate its surface. The turntable 7 rotates along with the connecting holes 17.

[0025] Furthermore, a fixing rod 12 is slidably connected inside the mounting box 3. The fixing rod 12 enters the connection hole 17 to fix the position of the turntable 7 and prevent the turntable 7 from rotating during use.

[0026] Furthermore, a spring 13 is fixedly connected between one end of the fixing rod 12 and the mounting box 3. When the fixing rod 12 moves, it compresses the spring 13. When the spring 13 loses its compressive force, it moves the fixing rod 12 under the action of elasticity, so that the fixing rod 12 returns to its original position.

[0027] Furthermore, the inner walls of the mounting box 3 are provided with second sliding grooves 14 on both sides. Slider 15s are symmetrically fixedly connected to the outer side of the fixing rod 12. The outer side of the slider 15 is slidably connected to the second sliding groove 14. The outer side of the slider 15 is in contact with the inner wall of the second sliding groove 14. When the fixing rod 12 moves, it carries the slider 15 to move inside the second sliding groove 14, maintaining the stability of the fixing rod 12 during movement.

[0028] In use, the flange plate 16 on one side of the pressure reducing valve body 1 is fixedly connected to the flange plate 16 on the side of the connecting pipe 2 with bolts. Then, the turntable 7 is rotated, which rotates the first gear 6. The first gear 6 rotates the gear ring 4 through the gear teeth 5. At the same time, the gear ring 4 rotates the second gear 8. The rotation of the second gear 8 rotates the moving plate 9 on one side until the sealing layer inside the moving plate 9 contacts the two sets of flange plates 16, so that the two sets of flange plates 16 are located in the fixing groove 10 on one side of the moving plate 9. This strengthens the connection between the pressure reducing valve body 1 and the connecting pipe 2 and avoids connection problems during use. If leakage occurs, the appropriate connection hole 17 is moved to one side of the fixing rod 12. The fixing rod 12 loses its pressing force and enters the connection hole 17 under the action of the spring 13, fixing the position of the turntable 7 and preventing the turntable 7 from rotating during use. When it is necessary to disassemble the pressure reducing valve body 1 and the connecting pipe 2, insert the designated tool into the connection hole 17 to remove the fixing rod 12 from the connection hole 17, rotate the turntable 7 so that the moving plate 9 moves away from the outside of the flange plate 16 with the fixing groove 10, release the restriction on the flange plate 16, and then disassemble the pressure reducing valve body 1 or the connecting pipe 2.

[0029] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure reducing valve for improving sealing, comprising a pressure reducing valve body (1), characterized in that: One end of the pressure reducing valve body (1) is fixedly connected to a connecting pipe (2) via a flange plate (16). An installation box (3) is provided on the outside of the connection between the pressure reducing valve body (1) and the connecting pipe (2). A gear ring (4) is rotatably connected inside the installation box (3). A first sliding groove (11) penetrating the surface of the installation box (3) is opened on one side. Multiple gear teeth (5) are fixedly connected on one side of the gear ring (4) located in the first sliding groove (11). A first gear (6) is rotatably connected on the outside of the installation box (3). One side of the first gear (6) meshes with the gear teeth (5). A second gear (8) is rotatably connected inside the installation box (3). A moving plate (9) is fixedly connected on one side of the second gear (8). One side of the second gear (8) meshes with the gear ring (4). A fixing groove (10) is opened on one side of the moving plate (9).

2. The pressure reducing valve for improving sealing according to claim 1, characterized in that: A turntable (7) is fixedly connected to one side center of the first gear (6) via a rotating rod.

3. A pressure reducing valve for improving sealing according to claim 2, characterized in that: The turntable (7) has multiple connecting holes (17) that penetrate its surface on one side.

4. A pressure reducing valve for improving sealing according to claim 1, characterized in that: The mounting box (3) has a fixed rod (12) that is slidably connected inside.

5. A pressure reducing valve for improving sealing according to claim 4, characterized in that: A spring (13) is fixedly connected between one end of the fixing rod (12) and the mounting box (3).

6. A pressure reducing valve for improving sealing according to claim 4, characterized in that: The inner wall of the mounting box (3) is provided with a second sliding groove (14) on both sides. A slider (15) is symmetrically fixedly connected to the outer side of the fixing rod (12). The outer side of the slider (15) is slidably connected to the second sliding groove (14).

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