Pressure reduction output device

Abstract

The utility model relates to the technical field of valves, and discloses a pressure reduction output device which comprises a gas path block, an exhaust hole, a gas source port, an output hole and a stepped inner hole are formed in the gas path block, a valve shell is installed on the stepped inner hole, a valve element is connected to the valve shell in a sliding mode, a membrane is installed on the valve element, a through hole is formed in the valve element, and a spring is arranged between the valve shell and the membrane. A valve seat is installed on the valve shell, and a sealing gasket is arranged on the valve seat. A passing hole is formed in the valve shell. By arranging the valve seat, the valve element, the valve shell, the spring and the diaphragm, pressure reduction output of an air source is achieved, the overall structure is compact and simple, the size is small, the valve is directly integrated in an air path block to be used, and the adaptability is high; the pressure-reduced output gas flow is used as pilot gas, the cost is reduced, and the application is wide; and through the movably arranged valve seat, the effect of flexibly adjusting the air pressure of the air flow exhausted from the output hole is achieved, the operation is simple, and the reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a pressure reducing output device. Background Art

[0002] Pressure reducing valves emerged from the need for pressure control and protection in industry and pipeline systems. With the advancement of industrialization, many production equipment and pipeline systems require stable operating pressures. Excessive pressures can cause pipe ruptures, equipment damage, and even safety accidents. Fluid pressure control is particularly important in the energy, chemical, water, and gas supply sectors.

[0003] As a device that automatically adjusts pressure, the pressure reducing valve prevents damage to the equipment when the pressure is too high by precisely adjusting the flow of the fluid. Modern pressure reducing valve technology continues to develop, mainly including various types such as direct-acting, pilot-operated and back-pressure types, which are adapted to various complex working conditions. With the advancement of materials science and manufacturing processes, the performance of pressure reducing valves has been significantly improved, with higher durability, accuracy and response speed. Today, pressure reducing valves are widely used in many fields such as energy, chemical industry, construction and medical care, becoming the core components to ensure the stable operation and safety of the system. However, the various pressure reducing valves on the market still have problems such as large size, complex structure, high cost and difficulty in adaptation, which makes their promotion and use difficult. Utility Model Content

[0004] The purpose of the utility model is to provide a pressure reducing output device to solve the problems of existing pressure reducing devices such as large volume, complex structure, and difficult adaptation.

[0005] The utility model is achieved through the following technical solutions: a pressure reducing output device comprises an air circuit block, an exhaust hole and an air source port are radially arranged on the air circuit block, an output hole is axially arranged on the air circuit block, a stepped inner hole is provided on the air circuit block, a valve housing is mounted on the stepped inner hole, a valve core is slidably connected to the valve housing, a diaphragm is mounted on the valve core, a through hole is arranged on the valve core along the axis, a spring is arranged between the valve housing and the diaphragm; a valve seat is mounted on the valve housing, a sealing gasket is provided on the valve seat; a path hole is provided on the valve housing; the air circuit block, valve seat, valve core and valve housing constitute an air source cavity, the air circuit block, valve core and valve housing constitute an output cavity, the air source port and path hole are in the air source cavity, the diaphragm, output hole and exhaust hole are in the output cavity, the air source cavity and the output cavity are connected through the through hole on the valve core; the diaphragm is used to control the on-off of the exhaust hole and the output cavity.

[0006] In order to better realize the present invention, further, one end of the valve core close to the output hole is provided with a thread, the diaphragm is sleeved on the valve core, the valve core is threadedly connected to a nut, and the nut is used to fix the diaphragm.

[0007] In order to better realize the present invention, further, the valve seat is movably connected to the valve housing, and the valve seat can move along the axial direction of the valve housing to adjust the distance between the sealing gasket and the valve core.

[0008] In order to better implement the present invention, further, the valve seat is threadedly connected to the valve housing, and a hexagonal hole is provided on the valve seat, and the hexagonal hole is provided on the opposite side of the sealing gasket.

[0009] In order to better realize the present invention, further, a first sealing ring is provided between the valve housing and the gas circuit block, and a second sealing ring is provided between the valve core and the valve housing.

[0010] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0011] (1) The utility model realizes the reduced pressure output of the gas source by setting a valve seat, a valve core, a valve housing, a spring, and a diaphragm. The overall structure is compact, simple, and small in size. It can be directly integrated into the gas circuit block for use, and has high adaptability. The reduced pressure output airflow is used as the pilot gas, which reduces costs and has a wide range of applications.

[0012] (2) The utility model realizes the effect of flexibly adjusting the air pressure of the air flow discharged from the output hole through the movable valve seat, which is simple to operate and highly reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional view of the overall structure of the utility model.

[0014] Among them: 1-air circuit block; 2-valve seat; 3-sealing gasket; 4-valve core; 5-valve housing; 6-spring; 7-diaphragm; 8-nut; 9-output hole; 10-exhaust hole; 11-air source port; 12-pathway hole; 13-first sealing ring; 14-second sealing ring. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0017] Example 1:

[0018] This embodiment provides a pressure reducing output device, specifically Figure 1 As shown, it includes an air circuit block 1, which consists of a lower body and an upper cover. The air circuit block 1 is provided with an exhaust hole 10 and an air source port 11 in the radial direction and an output hole 9 in the axial direction. The air source port 11 is located on the lower body, the output hole 9 is located on the upper cover, and the exhaust hole 10 is located at the connection between the lower body and the upper cover. The gas circuit block 1 is provided with a stepped inner hole, and the gas source port 11, the exhaust hole 10, and the output hole 9 are all connected to the stepped inner hole. A valve housing 5 is installed on the stepped inner hole, and a valve core 4 is slidably connected to the valve housing 5. A diaphragm 7 is installed on the valve core 4. A through hole is provided on the valve core 4 along the axis, and a spring 6 is provided between the valve housing 5 and the diaphragm 7; a valve seat 2 is installed on the valve housing 5, and a sealing gasket 3 is provided on the valve seat 2; a path hole 12 is provided on the valve housing 5; the gas circuit block 1, the valve seat 2, the valve core 4, and the valve housing 5 constitute an gas source cavity, and the gas circuit block 1, the valve core 4, and the valve housing 5 constitute an output cavity, the gas source port 11 and the path hole 12 are in the gas source cavity, the diaphragm 7, the output hole 9, and the exhaust hole 10 are in the output cavity, and the gas source cavity and the output cavity are connected through the through hole on the valve core 4; the diaphragm 7 is used to control the on-off of the exhaust hole 10 and the output cavity.

[0019] When the air source is connected, the air flow enters the air source cavity from the air source port 11, and in the air source cavity, the air flow passes through the path hole 12 from the air path block 1 into the valve housing 5, and then passes through the through hole on the valve core 4 into the output cavity, and is then discharged from the output hole 9; during this period, if the air source pressure increases, the air pressure in the output cavity will also increase. At this time, the pressure applied to the diaphragm 7 by the air pressure is greater than the thrust applied to the diaphragm 7 by the spring 6, then the spring 6 will be compressed, and the diaphragm 7 will begin to move downward, which will cause the diaphragm 7 to gradually connect the exhaust hole 10 with the output cavity. At this time, part of the air flow begins to be discharged from the exhaust hole 10 to reduce the air flow pressure output from the output hole 9. At the same time, the compression amount of the spring 6 is also gradually increasing, and the thrust applied to the diaphragm 7 is also increasing, so as to maintain the air pressure in the output cavity stable.

[0020] If the air source pressure is too high, the discharge through the exhaust hole 10 will not be able to effectively reduce the air pressure in the output chamber. Then the spring 6 will be further compressed, causing the valve core 4 to contact the sealing gasket 3 downward. When the valve core 4 contacts the sealing gasket 3, the air flow in the air source chamber cannot pass through the valve core 4 into the output chamber, thereby adjusting the air flow pressure output at the output hole 9 to ensure that the air flow pressure discharged at the output hole 9 is stable.

[0021] Example 2:

[0022] This embodiment is further expanded on the basis of the above embodiment. Figure 1 As shown, one end of the valve core 4 close to the output hole 9 is provided with a thread, the diaphragm 7 is sleeved on the valve core 4, and the valve core 4 is threadedly connected to a nut 8, and the nut 8 is used to fix the diaphragm 7.

[0023] The diaphragm 7 is fixed by the nut 8, and the stability and quick disassembly of the threaded connection are utilized to facilitate the maintenance and repair work of disassembling and assembling the diaphragm 7 in the later stage.

[0024] The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0025] Example 3:

[0026] This embodiment is further expanded on the basis of the above embodiment. Figure 1 As shown, the valve seat 2 is movably connected to the valve housing 5 , and the valve seat 2 can move along the axial direction of the valve housing 5 to adjust the distance between the sealing gasket 3 and the valve core 4 .

[0027] By changing the distance between the sealing gasket 3 and the valve core 4, the compression amount of the spring 6 is adjusted, thereby changing the air pressure in the output chamber, thereby achieving the function of adjusting the output air flow pressure at the output hole 9.

[0028] The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0029] Example 4:

[0030] This embodiment is further expanded on the basis of the above embodiment. Figure 1 As shown, the valve seat 2 is threadedly connected to the valve housing 5 , and a hexagonal hole is provided on the valve seat 2 , and the hexagonal hole is provided on the opposite side of the sealing gasket 3 .

[0031] When adjusting the position of the valve seat 2, open the upper cover of the gas path block 1, take out the valve housing 5, and then use a tool to twist the hexagon socket on the valve seat 2. At this time, the valve seat 2 will rotate toward the valve housing 5, thereby adjusting the distance between the sealing gasket 3 and the valve core 4. After the adjustment is completed, the self-locking property of the threaded connection is used to ensure that the position of the valve seat 2 will not change. The adjustment is fast and the operation is simple.

[0032] The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0033] Example 5:

[0034] This embodiment is further expanded on the basis of the above embodiment. Figure 1 As shown, a first sealing ring 13 is provided between the valve housing 5 and the gas circuit block 1 , and a second sealing ring 14 is provided between the valve core 4 and the valve housing 5 .

[0035] The standard first sealing ring 13 and the second sealing ring 14 are used to improve the air tightness of the gas source cavity and the output cavity, prevent the uncontrolled mutual flow and leakage of gas in the two cavities, and improve the stability and reliability of the device operation.

[0036] The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0037] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A pressure reducing output device, characterized in that: The invention comprises an air circuit block (1), wherein the air circuit block (1) is provided with an exhaust hole (10) and an air source port (11) in the radial direction, and an output hole (9) is provided in the axial direction; the air circuit block (1) is provided with a stepped inner hole, a valve housing (5) is installed on the stepped inner hole, a valve core (4) is slidably connected to the valve housing (5), a diaphragm (7) is installed on the valve core (4), a through hole is provided on the valve core (4) along the axis, and a spring (6) is provided between the valve housing (5) and the diaphragm (7); a valve seat (2) is installed on the valve housing (5), and a sealing gasket (3) is provided on the valve seat (2); and a passage hole (12) is provided on the valve housing (5); The gas circuit block (1), the valve seat (2), the valve core (4), and the valve housing (5) form an air source cavity, the gas circuit block (1), the valve core (4), and the valve housing (5) form an output cavity, the gas source port (11) and the path hole (12) are located in the gas source cavity, the diaphragm (7), the output hole (9), and the exhaust hole (10) are located in the output cavity, and the gas source cavity and the output cavity are connected via a through hole on the valve core (4); the diaphragm (7) is used to control the on / off of the exhaust hole (10) and the output cavity.

2. A pressure reducing output device according to claim 1, characterized in that: One end of the valve core (4) close to the output hole (9) is provided with a thread, the diaphragm (7) is sleeved on the valve core (4), and the valve core (4) is threadedly connected to a nut (8), and the nut (8) is used to fix the diaphragm (7).

3. The pressure reducing output device according to claim 1, characterized in that: The valve seat (2) is movably connected to the valve housing (5), and the valve seat (2) can move along the axial direction of the valve housing (5) to adjust the distance between the sealing gasket (3) and the valve core (4).

4. A pressure reducing output device according to claim 3, characterized in that: The valve seat (2) is threadedly connected to the valve housing (5), and a hexagonal hole is provided on the valve seat (2), and the hexagonal hole is provided on the opposite surface of the sealing gasket (3).

5. The pressure reducing output device according to claim 1, characterized in that: A first sealing ring (13) is provided between the valve housing (5) and the gas circuit block (1), and a second sealing ring (14) is provided between the valve core (4) and the valve housing (5).

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