A gas supply device provided with a proportional valve

Abstract

The utility model discloses a kind of gas supply device with proportional valve, it is related to air compressor technical field, including air compressor, the air compressor compressed gas output end is communicated with stainless steel main pipeline, and upstream of stainless steel main pipeline is connected with pressure regulating valve, proportional valve body is connected in the downstream of stainless steel main pipeline, and proportional valve body is connected with pressure sensor on the stainless steel main pipeline between pressure regulating valve, hollow fiber membrane bundle is connected downstream of stainless steel main pipeline, and hollow fiber membrane bundle reduces airflow pulsation by porous structure.This application provides a kind of gas supply device with proportional valve, after air compressor is opened, proportional valve is controlled according to the change of system pressure and working group gas consumption fluctuation, and exhaust according to the size of proportional valve opening, hollow fiber membrane bundle reduces airflow pulsation by porous structure, and then play the role of buffering and noise reduction, to reduce air compressor forced start-stop number by balancing gas in this way, improve air compressor service life.

Description

Technical Field

[0001] This utility model relates to the field of air compressor technology, specifically to a gas supply device equipped with a proportional valve. Background Technology

[0002] An air compressor is a device that compresses gas, mainly used to increase the pressure and density of gas. It has a wide range of applications in industrial production, construction, and daily life. The core component of an air compressor is the compressor, which compresses gas through mechanical devices such as pistons, screws, or turbines.

[0003] After the air compressor is loaded, uneven air consumption at the downstream end of the equipment leads to a large number of forced start-stop cycles, which in turn shortens the service life of the air compressor. Utility Model Content

[0004] The purpose of this invention is to provide a gas supply device equipped with a proportional valve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a gas supply device equipped with a proportional valve, comprising an air compressor, wherein the compressed gas output end of the air compressor is connected to a stainless steel main pipeline, and a pressure regulating valve is connected upstream of the stainless steel main pipeline, wherein a proportional valve body is connected midway to the stainless steel main pipeline, and a pressure sensor is connected on the stainless steel main pipeline between the proportional valve body and the pressure regulating valve.

[0006] Furthermore, the proportional valve body includes a valve body disposed externally, and the valve body has an air outlet chamber connected to its side end.

[0007] Furthermore, the proportional valve body also includes an air inlet chamber connected to the bottom end of the valve body, and the air inlet chamber and the air outlet chamber are vertically connected inside the valve body.

[0008] Furthermore, the proportional valve body also includes a valve seat radially disposed within the air intake chamber, and a valve stem is axially mounted inside the valve seat.

[0009] Furthermore, the proportional valve body also includes a return spring sleeved on the outside of the valve stem, and the valve stem is fixedly connected to the extension end of the actuator.

[0010] Furthermore, a hollow fiber membrane bundle is connected downstream of the stainless steel main pipe, and the hollow fiber membrane bundle reduces airflow pulsation through its porous structure.

[0011] Furthermore, the tail end of the stainless steel main pipe is connected to a diversion hose, and the ends of the diversion hoses are respectively connected to working groups.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. When this utility model is in use, after the air compressor is turned on, the proportional valve is controlled according to the changes in system pressure and the fluctuations in the air consumption of the working group, and exhaust is carried out according to the opening degree of the proportional valve. The hollow fiber membrane bundle reduces airflow pulsation through the porous structure, thereby playing a role in buffering and noise reduction. In this way, the number of forced start-stops of the air compressor is reduced by balancing the air consumption, thereby improving the service life of the air compressor.

[0014] 2. When this utility model is in use, after the air compressor is turned on, the system exhaust pressure is monitored according to the real-time pressure sensor data. When the system exhaust pressure increases, the actuator drives the valve stem to descend, which reduces the flow area between the inlet and outlet chambers, resulting in a lower control pressure output through the proportional valve. Conversely, when the system exhaust pressure decreases, the actuator drives the valve stem to rise, which increases the flow area between the inlet and outlet chambers, resulting in a higher control pressure output through the proportional valve. This allows the compressor's air supply and consumption to be balanced, achieving stepless air volume regulation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the gas path process of this utility model;

[0016] Figure 2 This is a schematic diagram of the external structure of the proportional valve body of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the proportional valve body of this utility model.

[0018] In the diagram: 1. Air compressor; 2. Stainless steel main pipeline; 3. Pressure regulating valve; 4. Pressure sensor; 5. Proportional valve body; 501. Valve body; 502. Outlet chamber; 503. Inlet chamber; 504. Valve seat; 505. Valve stem; 506. Return spring; 507. Actuator; 6. Hollow fiber membrane bundle; 7. Diverter hose; 8. Working group. Detailed Implementation

[0019] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0020] like Figure 1As shown, a gas supply device equipped with a proportional valve includes an air compressor 1. The compressed gas output end of the air compressor 1 is connected to a stainless steel main pipe 2, and a pressure regulating valve 3 is connected upstream of the stainless steel main pipe 2. A proportional valve body 5 is connected midway to the stainless steel main pipe 2, and a pressure sensor 4 is connected above the stainless steel main pipe 2 between the proportional valve body 5 and the pressure regulating valve 3. A hollow fiber membrane bundle 6 is connected downstream of the stainless steel main pipe 2, and the hollow fiber membrane bundle 6 reduces airflow pulsation through a porous structure. A diversion hose 7 is connected to the tail end of the stainless steel main pipe 2, and the ends of the diversion hose 7 are respectively connected to working groups 8.

[0021] The specific operation is as follows: This application controls the proportional valve according to the change of system pressure and the fluctuation of air volume of working group 8, and exhausts according to the opening of proportional valve body 5. The hollow fiber membrane bundle 6 reduces airflow pulsation through porous structure, thereby playing a role in buffering and noise reduction. In this way, the number of forced start and stop of air compressor 1 is reduced by balancing air consumption, thereby improving the service life of air compressor 1.

[0022] like Figures 2 to 3 As shown, the proportional valve body 5 includes a valve body 501 disposed on the outside, and an air outlet chamber 502 is connected to the side end of the valve body 501. The proportional valve body 5 also includes an air inlet chamber 503 connected to the bottom end of the valve body 501, and the air inlet chamber 503 and the air outlet chamber 502 are vertically connected inside the valve body 501. The proportional valve body 5 also includes a valve seat 504 radially disposed in the air inlet chamber 503, and a valve stem 505 is axially installed inside the valve seat 504. The proportional valve body 5 also includes a return spring 506 sleeved on the outside of the valve stem 505, and the valve stem 505 is fixedly connected to the telescopic end of the actuator 507.

[0023] The specific operation is as follows: After the air compressor 1 is turned on, the system exhaust pressure is monitored according to the real-time pressure sensor 4. When the system exhaust pressure increases, the actuator 507 drives the valve stem 505 to descend, which makes the flow area between the intake chamber 503 and the outlet chamber 502 smaller, and the control pressure output by the proportional valve is lower. When the system exhaust pressure decreases, the actuator 507 drives the valve stem 505 to rise, which makes the flow area between the intake chamber 503 and the outlet chamber 502 larger, and the control pressure output by the proportional valve is higher. In this way, the air supply and air consumption of the compressor can be kept in balance, realizing the stepless air volume regulation function.

[0024] It is worth noting that: the pressure sensor 4 detects the outlet pressure of the pressure regulating valve 3 in real time and transmits the signal to the PLC controller, which then dynamically adjusts the opening of the proportional valve body 5 through the PID algorithm to stabilize the system pressure. The above-mentioned electronic control technology is a mature solution in the existing technology and is not described in detail in this application.

[0025] Working principle: After the air compressor 1 is turned on, it monitors the system exhaust pressure according to the real-time pressure sensor 4. When the system exhaust pressure increases, the actuator 507 drives the valve stem 505 to descend, thereby reducing the flow area between the inlet chamber 503 and the outlet chamber 502, and thus reducing the control pressure output by the proportional valve. Conversely, when the system exhaust pressure decreases, the actuator 507 drives the valve stem 505 to rise, thereby increasing the flow area between the inlet chamber 503 and the outlet chamber 502, and thus increasing the control pressure output by the proportional valve. This allows the compressor's air supply and consumption to be balanced, achieving stepless air volume regulation. This application controls the proportional valve based on changes in system pressure and fluctuations in the air volume of the working group 8, and exhausts air according to the opening degree of the proportional valve body 5. The hollow fiber membrane bundle 6 reduces airflow pulsation through its porous structure, thereby playing a role in buffering and noise reduction. By balancing air consumption, the number of forced start-stop cycles of the air compressor 1 is reduced, thus extending the service life of the air compressor 1.

[0026] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A gas supply device equipped with a proportional valve, comprising an air compressor (1), characterized in that, The compressed gas output end of the air compressor (1) is connected to a stainless steel main pipe (2), and a pressure regulating valve (3) is connected upstream of the stainless steel main pipe (2). A proportional valve body (5) is connected midway to the stainless steel main pipe (2), and a pressure sensor (4) is connected above the stainless steel main pipe (2) between the proportional valve body (5) and the pressure regulating valve (3).

2. A gas supply device equipped with a proportional valve according to claim 1, characterized in that, The proportional valve body (5) includes a valve body (501) disposed on the outside, and the valve body (501) has an air outlet chamber (502) connected to its side end.

3. A gas supply device equipped with a proportional valve according to claim 2, characterized in that, The proportional valve body (5) also includes an air inlet chamber (503) connected to the bottom end of the valve body (501), and the air inlet chamber (503) and the air outlet chamber (502) are vertically connected inside the valve body (501).

4. A gas supply device equipped with a proportional valve according to claim 3, characterized in that, The proportional valve body (5) further includes a valve seat (504) radially disposed in the air intake chamber (503), and a valve stem (505) is axially installed inside the valve seat (504).

5. A gas supply device equipped with a proportional valve according to claim 4, characterized in that, The proportional valve body (5) also includes a return spring (506) sleeved on the outside of the valve stem (505), and the valve stem (505) is fixedly connected to the telescopic end of the actuator (507).

6. A gas supply device equipped with a proportional valve according to claim 1, characterized in that, The stainless steel main pipe (2) is connected downstream to a hollow fiber membrane bundle (6), and the hollow fiber membrane bundle (6) reduces airflow pulsation through its porous structure.

7. A gas supply device equipped with a proportional valve according to claim 6, characterized in that, The stainless steel main pipe (2) is connected to a diversion hose (7) at its tail end, and the ends of the diversion hose (7) are respectively connected to the working group (8).

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