Self-regulating pressure reducing valve

Abstract

A self-regulating pressure reducing valve, relating to the field of valve technology, is disclosed. A pressure pipe is installed on both sides of a pipeline, and a connecting pipe is installed at the upper end of the pipeline. A valve body is installed at the upper end of the connecting pipe, and a baffle is installed inside the valve body. A screw is movably mounted on the valve body, and an automatic adjustment device is installed between the valve body and the screw. This self-regulating pressure reducing valve is connected to the valve body via the pressure pipes on both sides of the inlet and outlet pipes. When there is a significant pressure difference between the two sides, the pressure difference causes the automatic adjustment device to move the screw up and down. This causes the screw to move the diaphragm to block the connecting pipe, thus smoothing the pressure difference between the inlet and outlet pipes. The pressure difference within the pipeline is transmitted to the valve body, allowing for automatic pressure adjustment. This enables timely adjustment when pressure needs to be adjusted, making the valve more convenient for pressure regulation.

Description

Technical Field

[0001] This invention belongs to the field of valve technology, specifically relating to a self-regulating pressure reducing valve. Background Technology

[0002] A pressure reducing valve is a valve that reduces the inlet pressure to a desired outlet pressure by regulating the flow, 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 pressure reduction. Then, through the regulation of the control and regulation system, the fluctuations in the downstream pressure are balanced with the damper force, keeping the downstream pressure constant within a certain error range.

[0003] For example, Chinese patent CN212745082U discloses a pressure-reducing manual regulating valve. Its purpose is to alleviate the pain caused by friction between the palm and the regulating wheel when manually turning it by hand by using a handle. This is quite practical. However, this regulating valve is manually adjustable, and the pressure in the pipeline can only be observed from an external pressure gauge. The valve cannot be automatically adjusted using the internal pressure of the pipeline. The inability to automatically adjust the valve means that it cannot be adjusted in time when needed, which can lead to the valve bursting. Summary of the Invention

[0004] The present invention mainly addresses the technical problems existing in the prior art by providing a self-regulating pressure reducing valve.

[0005] The above-mentioned technical problems of the present invention are mainly solved by the following technical solution: a self-adjusting pressure reducing valve, including a pipeline, air pressure pipes are provided on both sides of the pipeline, a connecting pipe is provided at the upper end of the pipeline, a valve body is provided at the upper end of the connecting pipe, a partition is provided inside the valve body, a screw is movably provided on the valve body, and an automatic adjustment device is provided between the inside of the valve body and the screw.

[0006] Preferably, the valve body is cylindrical, and a partition is fixedly connected to the middle position inside the valve body. The partition divides the valve body into upper and lower spaces, and both the upper and lower spaces inside the valve body are equipped with automatic adjustment devices. The bottom end of the valve body is connected to a pipeline through a connecting pipe, and a diaphragm is fixedly connected at the connection between the bottom end of the valve body and the connecting pipe.

[0007] Preferably, the valve body is divided into manual adjustment and pneumatic automatic adjustment.

[0008] Preferably, the manual adjustment is a screw that is movably inserted into the upper end of the valve body, and the upper end of the screw is fixedly connected to a screw handle. The screw passes through the interior of the valve body and the partition and extends into the lower half of the valve body to be fixedly connected to the diaphragm. The partition has a threaded groove at the position corresponding to the screw, and the screw is threadedly connected to the threaded groove.

[0009] Preferably, the pneumatic automatic adjustment consists of two air pressure pipes that are fixedly inserted into the upper and lower spaces of the valve body, and the automatic adjustment device includes a slide rod, a sliding block, and a threaded ring. The upper space contains two slide rods that are fixedly connected between the top of the valve body and the upper end of the partition plate, and the sliding block is movably sleeved on the two slide rods. The two slide rods are located on both sides of the screw, and the threaded ring is movably sleeved on the screw. The upper space is a sealed space.

[0010] Preferably, a sliding track is fixedly connected to the outer wall of the threaded ring, and a sleeve is fixedly connected to the side of the two sliding blocks near the screw, and the sleeve is movably connected to the sliding track.

[0011] Preferably, in the lower half of the space, two second sliding rods are fixedly connected between the bottom end of the valve body and the bottom end of the partition, and the second sliding block and the second sliding rod are movably sleeved together. A second threaded ring is movably sleeved on the screw, and the second threaded ring and the second sliding block are movably connected together through the ring. The screw passes through the partition and the bottom end of the valve body, and the lower half of the valve body is a sealed space.

[0012] Preferably, a damper is fixedly connected between the threaded ring and the partition plate, and the damper is wrapped around the outside of the screw, and the length of the damper does not exceed the length of the upper and lower space of the valve body.

[0013] Preferably, the pipe is divided into an inlet pipe and an outlet pipe on both sides of the connecting pipe, and the end of the inlet pipe and the outlet pipe that are close to each other is arranged in an S shape, and the screw penetrates the bottom end and can resist each other with the inlet pipe and the outlet pipe.

[0014] The beneficial effects of this invention are as follows:

[0015] 1. This self-regulating pressure reducing valve is connected to the valve body through air pressure pipes on both sides of the inlet and outlet pipes. When the air pressure on both sides is significantly different, the air pressure drives the automatic adjustment device to move the screw up and down, thereby causing the screw to drive the diaphragm to block the connecting pipe, making the air pressure in the inlet and outlet pipes relatively flat.

[0016] 2. This self-regulating pressure reducing valve uses the pressure difference within the pipeline to link with the valve body, enabling automatic adjustment of the pressure within the valve body to smooth out the pressure. This allows for timely adjustment when pressure needs to be adjusted, making the valve more convenient for pressure regulation.

[0017] 3. This self-regulating pressure reducing valve can be adjusted manually or automatically by the air pressure inside the pipeline. Attached Figure Description

[0018] Figure 1 This is a front view structural schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the valve body of the present invention;

[0020] Figure 3 This is a schematic diagram of the valve body partition of the present invention;

[0021] Figure 4 This is a schematic diagram of the inside of the pipe of the present invention;

[0022] Figure 5 This is a schematic diagram of the automatic adjustment device of the present invention;

[0023] Figure 6 This is a schematic diagram of the internal side view of the valve body of the present invention.

[0024] In the diagram: 1. Pipe; 2. Air pressure pipe; 3. Valve body; 4. Baffle plate; 5. Screw; 6. Connecting pipe; 7. Automatic adjustment device; 8. Screw handle; 9. Threaded groove; 10. Diaphragm; 11. Slide rod; 12. Sliding block; 13. Threaded ring; 14. Sliding track; 15. Sleeve; 16. Damper; 17. Second slide rod; 18. Second sliding block; 19. Second threaded ring; 20. Inlet pipe; 21. Outlet pipe. Detailed Implementation

[0025] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0026] Please see Figures 1-6 A self-adjusting pressure reducing valve includes a pipe 1, with air pressure pipes 2 on both sides of the pipe 1, and a connecting pipe 6 at the upper end of the pipe 1. A valve body 3 is located at the upper end of the connecting pipe 6, and a partition 4 is installed inside the valve body 3. A screw 5 is movably mounted on the valve body 3, and an automatic adjustment device 7 is installed between the valve body 3 and the screw 5. The pipe 1 is connected to the valve body 3 via the connecting pipe 6. The air pressure generated inside the pipe 1 is then connected to the inside of the valve body 3 via the air pressure pipes 2, causing the automatic adjustment device 7 inside the valve body to adjust the valve body, thereby driving the screw 5 to adjust up and down.

[0027] The valve body 3 is cylindrical, and a partition 4 is fixedly connected to the middle position inside the valve body 3. The partition 4 divides the valve body 3 into upper and lower spaces, and an automatic adjustment device 7 is provided in both the upper and lower spaces inside the valve body 3. The bottom end of the valve body 3 is connected to the pipe 1 through a connecting pipe 6, and a diaphragm 10 is fixedly connected at the connection between the bottom end of the valve body 3 and the connecting pipe 6. The partition 4 inside the valve body 3 forms two spaces, and the air pressure pipe 2 is fixed together corresponding to the two spaces, so that the automatic adjustment device 7 in the two spaces can move the screw 5 up and down.

[0028] The valve body 3 is divided into manual adjustment and pneumatic automatic adjustment. The valve body 3 has manual adjustment and automatic adjustment modes. The valve body 3 can adjust the screw 5 through manual adjustment, thereby clearing the pipe 1 with air pressure. The valve body 3 can also automatically adjust the pipe 1 through automatic adjustment, so that the screw 5 is adjusted by the air pressure inside the pipe 1.

[0029] The manual adjustment mechanism consists of a screw 5 that is movably inserted into the upper end of the valve body 3. A screw handle 8 is fixedly connected to the upper end of the screw 5. The screw 5 passes through the interior of the valve body 3 and the partition 4 and extends into the lower half of the valve body 3, where it is fixedly connected to the diaphragm 10. The partition 4 has a threaded groove 9 corresponding to the position of the screw 5, and the screw 5 is threadedly connected to the threaded groove 9. The manual adjustment can be performed by rotating the screw handle 8, which will cause the screw 5 to rotate in the threaded groove 9 in the partition 10, thereby moving the screw 5 up and down.

[0030] The pneumatic automatic adjustment consists of two air pressure pipes 2, which are fixedly inserted into the upper and lower spaces of the valve body 3 respectively. The automatic adjustment device 7 includes a slide rod 11, a sliding block 12, and a threaded ring 13. The upper space contains two slide rods 11, which are fixedly connected between the top of the valve body 3 and the upper end of the partition plate 4. The sliding block 12 is movably sleeved on the two slide rods 11. The two slide rods 11 are located on both sides of the screw 5. The screw 5 is movably sleeved with the threaded ring 13. The upper space is a sealed space. The pneumatic automatic adjustment utilizes the two air pressure pipes 2 inserted into the pipe 1 to be connected to the two spaces in the valve body 3. This allows the two air pressures in the pipe 1 to enter the valve body 3 through the air pressure pipes 2, creating a pressure contrast between the two spaces. This causes the sliding block 12 on the slide rod 11 to move up and down, and drives the threaded ring 13 to rotate and move up and down. This causes the screw 5 to move up and down with the threaded ring 13.

[0031] A sliding track 14 is fixedly connected to the outer wall of the threaded ring 13, and a sleeve 15 is fixedly connected to the side of the two sliding blocks 12 near the screw 5. The sleeve 15 is movably sleeved with the sliding track 14. A sliding track 14 is provided at the outer end of the threaded ring 13, and sleeves 15 are provided on both sides of the sliding blocks 12. When the screw 5 is moved by the sliding blocks 14, the sleeve 15 rotates in the sliding track 14 as the screw 5 moves.

[0032] In the lower half of the space, two second sliding rods 17 are fixedly connected between the bottom end of the valve body 3 and the bottom end of the partition 4. The second sliding block 18 is movably sleeved with the second sliding rod 17. The screw 5 is movably sleeved with a second threaded ring 19. The second threaded ring 19 and the second sliding block 18 are movably connected together through a ring 15. The screw 5 passes through the partition 4 and the bottom end of the valve body 3. The lower half of the space in the valve body 3 is a sealed space. When the lower half of the space moves through the second sliding rod 17, the second sliding block 18 and the second threaded ring 19, two symmetrical spaces are formed inside the valve body 3. Through the pressure of the air, the upper and lower spaces inside the valve body 3 are squeezed against each other, thereby causing the screw 5 to move.

[0033] A damper 16 is fixedly connected between the threaded ring 13 and the partition plate 4, and the damper 16 is wrapped around the outside of the screw 5. The length of the damper 16 does not exceed the length of the upper and lower space of the valve body 3. The damper 16 between the threaded ring 13 and the partition plate 4 is used to prevent excessive pressure and excessive impact of the threaded ring 13 on the screw 5. Therefore, the damper 16 is used to buffer and restore the threaded ring 13.

[0034] The pipe 1 is located on both sides of the connecting pipe 6 and is divided into an inlet pipe 20 and an outlet pipe 21. The end of the inlet pipe 20 and the outlet pipe 21 that are close to each other is set in an S-shape. The screw 5 passes through the bottom end and can resist the inlet pipe 20 and the outlet pipe 21 together. The pipe 1 is divided into an inlet pipe 20 and an outlet pipe 21 at the connecting pipe 6. The connection between the inlet pipe 20 and the outlet pipe 21 is moved up and down by the screw 5 in an S-shape to resist and block the opening of the pipe 1.

[0035] Working principle: Pipe 1 is connected to valve body 3 via connecting pipe 6. The air pressure generated inside pipe 1 is then connected to the interior of valve body 3 via air pressure pipe 2, causing the automatic adjustment device 7 inside the valve body to adjust the valve body, thereby driving the screw 5 to move up and down. A partition 4 inside valve body 3 creates two spaces, and air pressure pipes 2 are fixed to the corresponding spaces, allowing the automatic adjustment device 7 inside each space to move the screw 5 up and down. The valve body 3 has both manual and automatic adjustment modes. The valve body 3 can be manually adjusted to regulate the screw 5, thereby providing pneumatic unclog of the pipe 1. It can also be automatically adjusted to regulate the pipe 1, using the internal pressure of the pipe to regulate the screw 5. Manual adjustment is achieved by rotating the screw handle 8, which rotates the screw 5 within the threaded groove 9 of the partition 10, causing the screw 5 to move up and down. Automatic pneumatic adjustment utilizes two pneumatic hoses 2 inserted into the pipe 1, which are connected to two spaces within the valve body 3, allowing the pipe to... The two air pressures in channel 1 enter the valve body 3 through air pressure pipe 2, creating a pressure contrast between the two spaces. This causes the sliding block 12 on the slide rod 11 to move up and down, driving the threaded ring 13 to rotate and move up and down. The screw 5 moves up and down along with the threaded ring 13. When the screw 5 moves via the sliding block 14, the ring 15 rotates along the sliding track 14. As the lower half of the space moves via the second slide rod 17, the second sliding block 18, and the second threaded ring 19, two symmetrical spaces are formed inside the valve body 3. The pressure of the air causes the upper and lower spaces inside the valve body 3 to squeeze each other, thereby moving the screw 5. A damper 16 is provided between the threaded ring 13 and the partition 4 to prevent excessive pressure from causing the threaded ring 13 to drive the screw 5 to impact too much. Therefore, the damper 16 is used to buffer and restore the threaded ring 13. The pipe 1 is divided into an inlet pipe 20 and an outlet pipe 21 from the connecting pipe 6. The connection between the inlet pipe 20 and the outlet pipe 21 moves up and down with the screw 5 in an S-shape, thereby resisting and blocking the opening of the pipe 1.

[0036] Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments and many variations are possible. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention should be considered within the protection scope of the present invention.

Claims

1. A self-regulating pressure reducing valve, comprising a pipeline (1), characterized in that... The pipe (1) is provided with air pressure pipes (2) on both sides, and a connecting pipe (6) is provided at the upper end of the pipe (1). A valve body (3) is provided at the upper end of the connecting pipe (6). A partition (4) is provided inside the valve body (3). A screw (5) is movably provided on the valve body (3). An automatic adjustment device (7) is provided between the inside of the valve body (3) and the screw (5). The valve body (3) is cylindrical, and a partition (4) is fixedly connected to the middle position inside the valve body (3). The partition (4) divides the valve body (3) into upper and lower spaces, and an automatic adjustment device (7) is provided in both the upper and lower spaces inside the valve body (3). The bottom end of the valve body (3) is connected to the pipeline (1) through a connecting pipe (6), and a diaphragm (10) is fixedly connected at the connection between the bottom end of the valve body (3) and the connecting pipe (6). The valve body (3) is divided into manual adjustment and pneumatic automatic adjustment; The manual adjustment screw (5) is movably inserted into the upper end of the valve body (3), and the upper end of the screw (5) is fixedly connected to the screw handle (8). The screw (5) penetrates the interior of the valve body (3) and the partition (4) and extends into the lower half of the valve body (3) to be fixedly connected to the diaphragm (10). The partition (4) is provided with a threaded groove (9) corresponding to the position of the screw (5), and the screw (5) is threadedly connected to the threaded groove (9). The pneumatic automatic adjustment consists of two air pressure pipes (2) that are fixedly inserted into the upper and lower spaces of the valve body (3). The automatic adjustment device (7) includes a slide rod (11), a sliding block (12), and a threaded ring (13). The upper space contains two slide rods (11) that are fixedly connected between the top of the valve body (3) and the upper end of the partition plate (4). The sliding block (12) is movably sleeved on the two slide rods (11). The two slide rods (11) are located on both sides of the screw (5). The threaded ring (13) is movably sleeved on the screw (5). The upper space is a sealed space. A sliding rail (14) is fixedly connected to the outer wall of the threaded ring (13), and a sleeve (15) is fixedly connected to the side of the two sliding blocks (12) near the screw (5), and the sleeve (15) is movably sleeved with the sliding rail (14). In the lower half of the space, two second slide rods (17) are fixedly connected between the bottom end of the valve body (3) and the bottom end of the partition (4), and the second sliding block (18) is movably sleeved with the second slide rod (17). The screw (5) is movably sleeved with a second threaded ring (19), and the second threaded ring (19) is movably connected with the second sliding block (18) through the ring (15). The screw (5) passes through the partition (4) and the bottom end of the valve body (3), and the lower half of the valve body (3) is a sealed space.

2. The self-regulating pressure reducing valve according to claim 1, characterized in that... A spring (16) is fixedly connected between the threaded ring (13) and the partition plate (4), and the spring (16) is wrapped around the outside of the screw (5), and the length of the spring (16) does not exceed the length of the upper and lower space of the valve body (3).

3. A self-regulating pressure reducing valve according to claim 2, characterized in that... The pipe (1) is located on both sides of the connecting pipe (6) and is divided into an inlet pipe (20) and an outlet pipe (21). The ends of the inlet pipe (20) and the outlet pipe (21) that are close to each other are arranged in an S shape. The screw (5) passes through the bottom end and can resist the inlet pipe (20) and the outlet pipe (21) together.

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