Gas flow amplifier

Abstract

The utility model discloses a gas flow amplifier, including the shell body, the bottom of shell body is installed with exhaust ring, the bottom of exhaust ring is installed with bottom shell, the inside of shell body is provided with valve core connecting rod, one end of valve core connecting rod is connected with valve core, and the other end is connected with adjusting nut through shell body, be provided with spring between adjusting nut and valve core connecting rod, and bottom shell is installed with sensitivity adjusting screw. The utility model discloses through the cooperation of adjusting nut and spring can realize the basic adjustment of valve core position, and sensitivity adjusting screw can further fine adjustment equipment response characteristic, and the control precision of gas flow is improved significantly in the combination of both, can satisfy the use demand of high -precision occasion. Meanwhile, the rubber pad two on valve core connecting rod and the penetration port are in abutment, can accurate control the gas flow between air inlet and air outlet, further guarantee the accuracy of flow control.

Description

Technical Field

[0001] This utility model belongs to the technical field of gas flow control equipment, and particularly relates to gas flow amplifiers. Background Technology

[0002] Flow amplifiers, also known as proportional valves, air volume boosters, and high-flow regulators, are essential air source treatment components in industrial automated production.

[0003] Existing gas flow amplifiers have low flow control accuracy, making it difficult to meet the needs of high-precision applications. They also have slow response speeds, failing to respond to rapid changes in flow rate in a timely manner. Their complex structures lead to difficulties in installation and maintenance, and their high energy consumption increases operating costs. Utility Model Content

[0004] This utility model addresses the problems in the prior art by proposing the following technical solution:

[0005] A gas flow amplifier includes a housing, an exhaust ring mounted on the bottom of the housing, a base shell mounted on the bottom of the exhaust ring, a valve core connecting rod disposed inside the housing, one end of the valve core connecting rod being connected to a valve core, and the other end passing through the housing and connected to an adjusting nut, a spring being disposed between the adjusting nut and the valve core connecting rod, and a sensitivity adjusting screw being mounted on the base shell.

[0006] As a preferred embodiment of the above technical solution, a second pad is installed inside the exhaust ring, a first pad is disposed above the second pad, and an interference fit riveting shaft is provided between the first pad and the second pad.

[0007] As a preferred embodiment of the above technical solution, the inner ring of the pad is fitted with a pad fixing member, the inner ring of the pad fixing member is fitted with a rubber pad, the outer ring is fitted with a gasket and an O-ring seal three, the gasket abuts against the retaining ring of the outer ring of the pad fixing member, and the O-ring seal three is located between the outer shell and the exhaust ring.

[0008] As a preferred embodiment of the above technical solution, the outer casing is provided with an air inlet and an air outlet. The valve core connecting rod is located inside the air outlet. A through-hole communicating with the air inlet is opened on one side of the air outlet. The end of the valve core connecting rod away from the adjusting nut passes through the through-hole and is threadedly connected to a valve core nut. The valve core nut abuts against a first rubber pad. A second rubber pad is fitted around the outer ring of the valve core connecting rod. The second rubber pad abuts against the through-hole. A splice cap is fitted around the outer ring of the valve core connecting rod. The splice cap abuts against the valve core nut.

[0009] As a preferred embodiment of the above technical solution, a second diaphragm is provided between the outer shell and the exhaust ring, and a first diaphragm and a second O-ring are provided between the exhaust ring and the bottom shell.

[0010] As a preferred embodiment of the above technical solution, the outer ring of the adjusting nut is fitted with an O-ring four, the outer ring of the sensitivity adjusting screw is fitted with an O-ring one, a cross screw one is threaded to one side of the bottom shell, and the outer shell, the vent ring and the bottom shell are connected by a cross screw two.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. This utility model allows for basic adjustment of the valve core position through the cooperation of the adjusting nut and spring, while the sensitivity adjusting screw can further finely adjust the equipment's response characteristics. The combination of these two features significantly improves the control accuracy of gas flow, meeting the requirements of high-precision applications. Simultaneously, the rubber pad on the valve core connecting rod abuts against the through-hole, precisely controlling the gas flow between the inlet and outlet, further ensuring the accuracy of flow control.

[0013] 2. The first and second diaphragms of this utility model can quickly sense changes in gas pressure and transmit the pressure signal to the valve core assembly in a timely manner, prompting the valve core to make rapid position adjustments, thereby quickly responding to changes in flow rate and improving the equipment's response efficiency to gas flow fluctuations.

[0014] 3. The various components of this utility model are mostly connected by detachable methods such as threaded connections and nesting. For example, the bottom shell is connected to the exhaust ring and the outer shell by two cross screws, and the valve core connecting rod is connected to the valve core nut by threads, which facilitates the disassembly, replacement and maintenance of the components. At the same time, the first pad and the second pad are connected by an interference fit riveting shaft, which not only ensures the stability of the structure, but also simplifies the assembly process. Attached Figure Description

[0015] Figure 1 The diagram shown is a schematic representation of the gas flow amplifier in the embodiment.

[0016] Figure 2 The diagram shown is a structural schematic of the outer casing in the embodiment.

[0017] Explanation of reference numerals in the attached figures:

[0018] 1. Adjusting nut; 2. Spring; 3. Valve core connecting rod; 4. Outer shell; 5. Connecting cap; 6. Valve core nut; 7. Washer; 8. Exhaust ring; 9. Pad fixing piece; 10. Pad one; 11. Riveting shaft; 12. Pad two; 13. Bottom shell; 14. Sensitivity adjusting screw; 15. Phillips screw one; 16. O-ring one; 17. Diaphragm one; 18. O-ring two; 19. Diaphragm two; 20. O-ring three; 21. Rubber pad one; 22. Rubber pad two; 23. O-ring four; 24. Phillips screw two. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0020] Example

[0021] like Figure 1 and Figure 2 As shown, the gas flow amplifier includes a housing 4, an exhaust ring 8 installed at the bottom of the housing 4, a bottom shell 13 installed at the bottom of the exhaust ring 8, a valve core connecting rod 3 installed inside the housing 4, one end of the valve core connecting rod 3 is connected to a valve core, and the other end passes through the housing 4 and is connected to an adjusting nut 1, a spring 2 is provided between the adjusting nut 1 and the valve core connecting rod 3, and a sensitivity adjusting screw 14 is installed on the bottom shell 13.

[0022] Specifically, the outer casing 4 provides a mounting carrier for each component; the exhaust ring 8 is used to discharge excess gas and balance the internal pressure; the bottom casing 13 seals the bottom and supports the sensitivity adjustment component; the valve core connecting rod 3 and the valve core are the core actuators for controlling gas flow; the flow area of ​​the inlet and outlet is adjusted by changing the position; the adjusting nut 1 and the spring 2 cooperate to adjust the initial position of the valve core by changing the elasticity of the spring 2, thereby achieving coarse flow adjustment; the sensitivity adjustment screw 14 is used to finely adjust the response sensitivity of the equipment to pressure changes and improve control accuracy.

[0023] like Figure 2 As shown, a second gasket 12 is installed inside the exhaust ring 8, a first gasket 10 is provided above the second gasket 12, and an interference fit riveting shaft 11 is provided between the first gasket 10 and the second gasket 12.

[0024] It should be noted that the first pad 10 and the second pad 12 form a stable support structure through the interference fit of the riveting shaft 11, which enhances the mechanical strength inside the exhaust ring 8 and prevents the components from deforming due to gas pressure fluctuations. The interference fit of the riveting shaft 11 ensures that the pad assembly is firmly connected, avoiding loosening that could affect the stability of the equipment, while also providing rigid support for the diaphragm and sealing components above.

[0025] like Figure 2 As shown, the inner ring of the pad 10 is fitted with a pad fixing member 9, the inner ring of the pad fixing member 9 is fitted with a rubber pad 21, and the outer ring is fitted with a gasket 7 and an O-ring 20. The gasket 7 abuts against the retaining ring of the outer ring of the pad fixing member 9, and the O-ring 20 is located between the outer shell 4 and the exhaust ring 8.

[0026] Specifically, the gasket fastener 9 is an intermediate carrier connecting the gasket assembly and the valve core component. Its inner ring rubber gasket 21 is used to buffer the pressure of the valve core nut 6, avoid hard contact that could cause component wear, and enhance the sealing effect.

[0027] The outer ring gasket 7 cooperates with the retaining ring to limit the axial displacement of the gasket fixing part 9 and ensure its stable position. The O-ring seal 20 seals the connection between the outer shell 4 and the exhaust ring 8 to prevent gas from leaking from the gap and improve the equipment's sealing performance.

[0028] like Figure 1 and Figure 2 As shown, the outer casing 4 is provided with an air inlet and an air outlet. The valve core connecting rod 3 is located inside the air outlet. A through-hole communicating with the air inlet is opened on one side of the air outlet. The end of the valve core connecting rod 3 away from the adjusting nut 1 passes through the through-hole and is threadedly connected to the valve core nut 6. The valve core nut 6 abuts against the rubber pad 21. The outer ring of the valve core connecting rod 3 is fitted with a rubber pad 22, which abuts against the through-hole. The outer ring of the valve core connecting rod 3 is fitted with a cap 5, which abuts against the valve core nut 6.

[0029] Specifically, the valve core nut 6 abuts against the rubber pad 21, transmitting the displacement of the valve core connecting rod 3 to the pad assembly, indirectly controlling the deformation of the diaphragm and adjusting the flow rate. The rubber pad 22 abuts against the through-hole, sealing the gap between the valve core connecting rod 3 and the through-hole, preventing gas leakage from the through-hole, and ensuring that all gas is discharged from the outlet after being regulated by the valve core.

[0030] like Figure 1 and Figure 2 As shown, a second diaphragm 19 is provided between the outer shell 4 and the exhaust ring 8, and a first diaphragm 17 and an O-ring 18 are provided between the exhaust ring 8 and the bottom shell 13.

[0031] It should be noted that diaphragm 17 and diaphragm 2 19 are pressure sensing components that can quickly sense the pressure difference between the air inlet and the exhaust ring 8. Through deformation, they drive the valve core assembly to achieve dynamic flow regulation and improve the equipment response speed. O-ring 2 18 seals the connection between the exhaust ring 8 and the bottom shell 13, further enhancing the overall sealing of the equipment and preventing gas leakage from the bottom.

[0032] like Figure 1 and Figure 2 As shown, the outer ring of the adjusting nut 1 is fitted with an O-ring 23, the outer ring of the sensitivity adjusting screw 14 is fitted with an O-ring 16, one side of the bottom shell 13 is threaded with a cross screw 15, and the outer shell 4, the exhaust ring 8 and the bottom shell 13 are connected by a cross screw 24.

[0033] Specifically, the O-ring 23 seals the gap between the adjusting nut 1 and the outer shell 4, and the O-ring 16 seals the gap between the sensitivity adjusting screw 14 and the bottom shell 13, to prevent gas leakage in all directions and ensure the operating efficiency of the equipment.

[0034] Cross screw 15 reinforces the local structure of the bottom shell 13, and cross screw 24 fastens the outer shell 4, exhaust ring 8 and bottom shell 13 into a whole, ensuring the structural stability of the equipment under pressure fluctuations and facilitating disassembly and maintenance.

[0035] The working principle of a gas flow amplifier is based on the "Coanda effect," which was discovered by Henry Coanda in his aerodynamic studies. The Coanda effect refers to the adhesion of fluid to a gradually expanding surface, which allows the fluid to flow along the surface during injection, thereby increasing the flow rate while the pressure decreases.

[0036] Specifically, the gas flow amplifier adjusts the output flow rate and pressure via pneumatic signals. Its standard signal output ratio is 1:1, but amplification ratios of 1:2, 1:3, or 1:6 can be selected. Utilizing the Coanda effect principle of fluid mechanics, the gas flow amplifier inputs a small amount of high-pressure gas, which drives the surrounding gas at the input end, resulting in a high-speed output of a large volume of low-pressure gas at the output end. The gas flow rate can be amplified by 10 to 100 times.

[0037] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A gas flow amplifier, characterized in that, The device includes an outer shell (4), an exhaust ring (8) is installed at the bottom of the outer shell (4), a bottom shell (13) is installed at the bottom of the exhaust ring (8), a valve core connecting rod (3) is provided inside the outer shell (4), one end of the valve core connecting rod (3) is connected to a valve core, and the other end passes through the outer shell (4) and is connected to an adjusting nut (1). A spring (2) is provided between the adjusting nut (1) and the valve core connecting rod (3), and a sensitivity adjusting screw (14) is installed on the bottom shell (13).

2. The gas flow amplifier according to claim 1, characterized in that, The exhaust ring (8) has a second pad (12) installed inside, and a first pad (10) is provided above the second pad (12). An interference fit riveting shaft (11) is provided between the first pad (10) and the second pad (12).

3. The gas flow amplifier according to claim 2, characterized in that, The inner ring of the pad (10) is fitted with a pad fixing member (9), the inner ring of the pad fixing member (9) is fitted with a rubber pad (21), the outer ring is fitted with a gasket (7) and an O-ring seal (20), the gasket (7) abuts against the retaining ring of the outer ring of the pad fixing member (9), and the O-ring seal (20) is located between the outer shell (4) and the exhaust ring (8).

4. The gas flow amplifier according to claim 3, characterized in that, The outer shell (4) is provided with an air inlet and an air outlet. The valve core connecting rod (3) is located inside the air outlet. A through-hole communicating with the air inlet is opened on one side of the air outlet. The end of the valve core connecting rod (3) away from the adjusting nut (1) passes through the through-hole and is threadedly connected to the valve core nut (6). The valve core nut (6) abuts against the first rubber pad (21). The outer ring of the valve core connecting rod (3) is fitted with a second rubber pad (22). The second rubber pad (22) abuts against the through-hole. The outer ring of the valve core connecting rod (3) is fitted with a cap (5). The cap (5) abuts against the valve core nut (6).

5. The gas flow amplifier according to claim 1, characterized in that, A second diaphragm (19) is provided between the outer shell (4) and the exhaust ring (8), and a first diaphragm (17) and a second O-ring (18) are provided between the exhaust ring (8) and the bottom shell (13).

6. The gas flow amplifier according to claim 1, characterized in that, The outer ring of the adjusting nut (1) is fitted with an O-ring four (23), the outer ring of the sensitivity adjusting screw (14) is fitted with an O-ring one (16), one side of the bottom shell (13) is threaded with a cross screw one (15), and the outer shell (4), the exhaust ring (8) and the bottom shell (13) are connected by a cross screw two (24).

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