Multifunctional pressure control device and portable pressure control box

Abstract

The utility model discloses a multifunctional pressure control device and a portable pressure control box. The device comprises a first switch valve, a first pressure control gas circuit, a second pressure control gas circuit connected with the first pressure control gas circuit in parallel, and double timers, the first switch valve is arranged in front of the first pressure control gas circuit and the second pressure control gas circuit which are connected in parallel and is used for controlling on-off of a gas source; the first pressure control gas circuit comprises a first pressure reducing valve, a second switch valve and a first electromagnetic valve and is used for outputting gas of first pressure or a first pressure interval; the second pressure control gas circuit comprises a second pressure reducing valve, a third switch valve and a second electromagnetic valve and is used for outputting gas of second pressure or a second pressure interval; output ends of the first and second electromagnetic valves are connected in parallel; the double timer is connected with the first electromagnetic valve and the second electromagnetic valve and used for controlling the first electromagnetic valve to act in a first period and controlling the second electromagnetic valve to act in a second period. The output of gases with different pressures can be controlled, and different pressure test requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model discloses pneumatic control technical field, especially relate to a multifunctional pressure control device, portable pressure control box. BACKGROUND

[0002] In the industrial production and scientific research test field, the performance test and life test of pneumatic components are the core links of quality control. The current test system has significant technical bottlenecks in practical application: due to the differentiated demand of different types of measured components for working pressure, the test mechanism must build a dedicated pressure control system for each test project. This traditional operation mode exposes multiple technical defects: first, for different pressure requirements and control requirements, different equipment and different sites are often required for testing and repeated pressure control system construction, resulting in increased equipment investment costs and a large amount of labor hours; second, when facing fixedly installed large pneumatic actuators (such as production line integrated cylinders) or precision sensitive components, the measured components are not easy to move, which brings some inconvenience to the test. UTILITY MODEL CONTENTS

[0003] In view of the above problems, the utility model is provided to provide a multifunctional pressure control device and a portable pressure control box that overcome the above problems or at least partially solve the above problems.

[0004] In the first aspect, the utility model embodiment provides a multifunctional air pressure control device, comprising:

[0005] A first on-off valve, a first pressure control gas circuit, a second pressure control gas circuit connected in parallel with the first pressure control gas circuit, and a double timer;

[0006] The first on-off valve is arranged before the parallel first pressure control gas circuit and second pressure control gas circuit, and is used for controlling the on-off of the air source;

[0007] The first pressure control gas circuit comprises a first pressure reducing valve, a second on-off valve and a first electromagnetic valve, the input end of the first pressure reducing valve is connected with the output end of the first on-off valve, and the output end of the first pressure reducing valve is connected with the input end of the second on-off valve; the first output end of the second on-off valve is connected with the measured component, and the second output end of the second on-off valve is connected with the input end of the first electromagnetic valve;

[0008] The second pressure control gas circuit comprises a second pressure reducing valve, a third on-off valve and a second electromagnetic valve, the input end of the second pressure reducing valve is connected with the output end of the first on-off valve, and the output end of the first pressure reducing valve is connected with the input end of the third on-off valve; the first output end of the third on-off valve is connected with the measured component, and the second output end of the third on-off valve is connected with the input end of the second electromagnetic valve;

[0009] The first pressure control gas path is used for outputting gas at the first pressure or in the first pressure range; and the second pressure control gas path is used for outputting gas at the second pressure or in the second pressure range, the first pressure being less than the second pressure, and the first pressure range being less than the second pressure range.

[0010] The output end of the first electromagnetic valve is connected in parallel with the output end of the second electromagnetic valve; and the double timer is connected with the first electromagnetic valve and the second electromagnetic valve, and is used for controlling the first electromagnetic valve to actuate according to the first period and controlling the second electromagnetic valve to actuate according to the second period.

[0011] In some optional embodiments, the first pressure reducing valve is used for stabilizing the gas pressure output by the first on-off valve to the first pressure or to the first pressure range.

[0012] The second on-off valve is used for outputting gas to the measured element according to the first pressure or outputting gas to the first electromagnetic valve according to the pressure in the first pressure range.

[0013] The first electromagnetic valve is used for actuating according to the first period under the control of the double timer, so as to output gas in the first pressure range to the measured element according to the first period.

[0014] In some optional embodiments, the second pressure reducing valve is used for stabilizing the gas pressure output by the first on-off valve to the second pressure or to the second pressure range.

[0015] The third on-off valve is used for outputting gas to the measured element according to the second pressure or outputting gas to the second electromagnetic valve according to the pressure in the second pressure range.

[0016] The second electromagnetic valve is used for actuating according to the second period under the control of the double timer, so as to output gas in the second pressure range to the measured element according to the second period.

[0017] In some optional embodiments, the second on-off valve is a three-position five-way on-off valve.

[0018] When the spool of the second on-off valve is located at the first working position, the first output end of the second on-off valve is connected, so as to output gas at the first pressure to the measured element, and the second output end is not connected.

[0019] When the spool of the second on-off valve is located at the third working position, the second output end of the second on-off valve is connected with the first electromagnetic valve, and the first output end is not connected.

[0020] The first electromagnetic valve is a two-position three-way electromagnetic valve, when the spool of the second on-off valve is located at the third working position, the first electromagnetic valve works and the spool is located at the first working position, and the output end of the first electromagnetic valve is connected, so as to output gas in the first pressure range to the measured element.

[0021] In some alternative embodiments, the third switching valve is a three-position five-way solenoid valve;

[0022] When the valve core of the third switching valve is in the first working position, the first output terminal of the third switching valve is connected to output gas to the measured element according to the second pressure, and the second output terminal is not connected.

[0023] When the valve core of the third switching valve is in the third working position, the second output terminal of the third switching valve is connected to the second solenoid valve, and the first output terminal is not connected.

[0024] The second solenoid valve is a two-position three-way solenoid valve. When the valve core of the third switching valve is in the third working position, the second solenoid valve is working and the valve core is in the first working position. The output end of the second solenoid valve is connected to output the gas in the second pressure range to the measured element.

[0025] In some optional embodiments, when the valve cores of both the second and third switching valves are in the third operating position, the first and second solenoid valves are used to alternately operate in the third cycle according to the control of the dual timers.

[0026] The second output terminal of the second switching valve is connected to the first solenoid valve. The valve core of the first solenoid valve switches between the first working position and the second working position. The first pressure control gas path is used to output gas in the third pressure range.

[0027] or;

[0028] The second output terminal of the third switching valve is connected to the second solenoid valve. The valve core of the second solenoid valve switches between the first working position and the second working position. The second pressure control gas path is used to output gas in the third pressure range.

[0029] In some optional embodiments, when the valve core of the second switching valve is in the second working position, neither the first output terminal nor the second output terminal of the second switching valve is connected.

[0030] When the valve core of the third switching valve is in the second working position, neither the first output terminal nor the second output terminal of the third switching valve is connected.

[0031] In some optional embodiments, the first pressure control air path further includes: a first pressure gauge, a second pressure gauge, and a third pressure gauge;

[0032] The first pressure gauge is used to measure and display the gas pressure at the first output terminal of the second switching valve;

[0033] The second pressure gauge is used to measure and display the gas pressure at the first output terminal of the third switching valve;

[0034] The third pressure gauge is connected to the first and second solenoid valves in parallel and is used to measure and display the gas pressure at the output end of the first or second solenoid valve.

[0035] In some optional embodiments, the above-described multifunctional pressure control device further includes: a filter, a counter, and a relay;

[0036] The filter is connected to the first switching valve and is used to process the gas introduced into the system and output it to the first switching valve;

[0037] The counter is connected to the first solenoid valve and the second solenoid valve to count the number of times the first solenoid valve or the second solenoid valve is actuated.

[0038] A relay is used to control the on / off state of the first and second solenoid valves.

[0039] In some optional embodiments, when the first pressure control air circuit is working, the second switching valve is in the open state and the third switching valve is in the closed state.

[0040] When the second pressure control air circuit is working, the second switch valve is in the closed state and the third switch valve is in the open state.

[0041] When both the first pressure control air circuit and the second pressure air circuit are working, both the second and third switching valves are in the open state.

[0042] In some optional embodiments, when both the first pressure control air path and the second pressure air path are working, the first solenoid valve is in the open state and the second solenoid valve is in the closed state.

[0043] or;

[0044] The second solenoid valve is in the open state, and the first solenoid valve is in the closed state.

[0045] Secondly, embodiments of the present invention provide a portable pressure control box, comprising: a box body, a portable handle and an air inlet disposed on the top of the box body, a multi-functional air pressure control device disposed inside the box body, a first air outlet, a second air outlet and a third air outlet disposed on the front of the box body, a first pressure reducing valve adjustment knob and a second pressure reducing valve adjustment knob, a first switch valve knob, a second switch valve knob and a third switch valve knob, and a power plug disposed on the side of the box body.

[0046] The air inlet and the first switch valve knob are connected to the first switch valve in the multi-functional air pressure control device;

[0047] The first air outlet is connected to the first output terminal of the second switching valve, the second air outlet is connected to the first output terminal of the third switching valve, and the third air outlet is connected to the output terminals of the first and second solenoid valves connected in parallel.

[0048] The first pressure reducing valve adjustment knob is connected to the first pressure reducing valve, the second pressure reducing valve adjustment knob is connected to the second pressure reducing valve, the first switch valve knob is connected to the first switch valve, the second switch valve knob is connected to the second switch valve, and the third switch valve knob is connected to the third switch valve.

[0049] The power plug is connected to the first and second solenoid valves of the multi-functional pneumatic control device to provide power to the first and second solenoid valves.

[0050] In some optional embodiments, the portable pressure control box described above further includes: a counter display screen, a first pressure display screen, a second pressure display screen, a third pressure display screen, and a dual timer knob;

[0051] The counter display is connected to the counter, the first pressure display is connected to the first pressure gauge, the second pressure display is connected to the second pressure gauge, and the third pressure display is connected to the third pressure gauge.

[0052] The dual timer knob is connected to the dual timer and is used to control the timing of the dual timer.

[0053] The beneficial effects of the above-mentioned technical solutions provided by the embodiments of this utility model include at least the following:

[0054] The multi-functional pneumatic control device provided by this utility model includes: a first switching valve, a first pressure control air circuit, a second pressure control air circuit connected in parallel with the first pressure control air circuit, and dual timers;

[0055] The first switching valve is positioned before the parallel first and second pressure control air circuits to control the on / off state of the air source. The first pressure control air circuit includes a first pressure reducing valve, a second switching valve, and a first solenoid valve. This circuit outputs gas at a first pressure or within a first pressure range. The second pressure control air circuit includes a second pressure reducing valve, a third switching valve, and a second solenoid valve. This circuit outputs gas at a second pressure or within a second pressure range. The first pressure is lower than the second pressure, and the first pressure range is narrower than the second pressure range. By connecting the two air circuits in parallel, different pressures or pressure ranges can be output to meet varying pressure requirements during pressure testing.

[0056] The output of the first solenoid valve is connected in parallel with the output of the second solenoid valve; dual timers are connected to the first and second solenoid valves to control the first solenoid valve to operate according to a first cycle and to control the second solenoid valve to operate according to a second cycle. The dual timers control the periodic operation of the first and second solenoid valves, enriching the requirements for pressure testing.

[0057] This multi-functional pneumatic control device can be installed in a portable pressure control box to increase its portability. For large, immobile test components, pressure testing can be conveniently performed without moving the test component.

[0058] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings.

[0059] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0060] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0061] Figure 1 This is a schematic diagram of the structure of the multifunctional pressure control device in Embodiment 1 of this utility model;

[0062] Figure 2 This is a schematic diagram of the specific structure of the multifunctional pressure control device in Embodiment 1 of this utility model;

[0063] Figure 3 This is a front view of the portable pressure control box in Embodiment 2 of this utility model;

[0064] Figure 4 This is a left view of the portable pressure control box in Embodiment 2 of this utility model; Attached image description:

[0066] 1-1 Filter; 1-2 First switching valve; 2-1 First pressure reducing valve; 2-2 Second switching valve; 2-3 First pressure gauge; 2-4 First solenoid valve; 3-1 Second pressure reducing valve; 3-2 Third switching valve; 3-3 Second pressure gauge; 3-4 Second solenoid valve; 4-1 Third pressure gauge; A1 First air outlet; A2 Second air outlet; A3 Third air outlet; AIR, air inlet; 12 First switching valve knob; 21 First pressure reducing valve adjustment knob; 22 Second switching valve knob; 23 First pressure display screen; 31 Second pressure reducing valve adjustment knob; 32 Third switching valve knob; 33 Second pressure display screen; 41 Third pressure display screen. Detailed Implementation

[0067] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0068] To address the problems in existing technologies where different pressure requirements necessitate the construction of corresponding pressure control systems, and where fixed measurement sites and immobile large test components lead to testing difficulties, this utility model provides a multifunctional pressure control device and a portable pressure control box to solve or partially solve the problems existing in the prior art.

[0069] This utility model embodiment provides a multifunctional pressure control device, the structural schematic diagram of which is shown below. Figure 1 As shown, see the detailed structural diagram. Figure 2 As shown, it includes: a first switching valve 1-2, a first pressure control air circuit 2, a second pressure control air circuit 3 connected in parallel with the first pressure control air circuit, and a dual timer 4;

[0070] The first switching valve is installed before the first and second pressure control air circuits connected in parallel, and is used to control the on / off state of the air source.

[0071] The first pressure control air circuit includes: a first pressure reducing valve 2-1, a second switching valve 2-2, and a first solenoid valve 2-4. The input end of the first pressure reducing valve is connected to the output end of the first switching valve, and the output end of the first pressure reducing valve is connected to the input end of the second switching valve. The first output end of the second switching valve is connected to the measured element, and the second output end of the second switching valve is connected to the input end of the first solenoid valve.

[0072] The second pressure control air circuit includes: a second pressure reducing valve 3-1, a third switching valve 3-2, and a second solenoid valve 3-4. The input end of the second pressure reducing valve is connected to the output end of the first switching valve, and the output end of the first pressure reducing valve is connected to the input end of the third switching valve. The first output end of the third switching valve is connected to the measured element, and the second output end of the third switching valve is connected to the input end of the second solenoid valve.

[0073] The first pressure control gas path is used to output gas at a first pressure or gas within a first pressure range; the second pressure control gas path is used to output gas at a second pressure or gas within a second pressure range, wherein the first pressure is less than the second pressure and the first pressure range is less than the second pressure range.

[0074] The output of the first solenoid valve is connected in parallel with the output of the second solenoid valve; the dual timers are connected to the first and second solenoid valves to control the periodic operation of the first solenoid valve. Specifically, the dual timers are used to control the first solenoid valve to operate according to the first cycle and to control the second solenoid valve to operate according to the second cycle.

[0075] The aforementioned multifunctional pressure control device includes two pressure control air paths. The first pressure control air path outputs gas at a first pressure or gas within a first pressure range, while the second pressure control air path outputs gas at a second pressure or gas within a second pressure range. This device can adaptively set different pressures according to the pressure required by the tested component. Furthermore, it can perform both single-pressure control output and range-based pressure control output to meet different testing scenarios. Compared to existing technologies, it can output different pressures within a single pneumatic control system, solving the problem of repeatedly building pressure control systems for different pressure testing needs. Additionally, the device can control a solenoid valve to achieve pressure output at a certain cycle, increasing the applicability of pressure testing. The first pressure is lower than the second pressure, which is higher; the device can output both low and high pressures, facilitating testing needs.

[0076] Optionally, a first pressure reducing valve is used to stabilize the gas pressure output by the first switching valve to a first pressure or to a first pressure range; a second switching valve is used to output gas to the measured element according to the first pressure, or to output gas to the first solenoid valve according to the pressure of the first pressure range; the first solenoid valve is used to operate according to a first cycle under the control of dual timers, so that the gas in the first pressure range is output to the measured element according to the first cycle.

[0077] The pressure reducing valve in the first pressure control gas circuit can reduce the gas pressure to different levels. When it is necessary to control the first pressure output, the pressure is reduced to the corresponding first pressure. When it is necessary to control the pressure output of the first interval, the pressure can be controlled to any pressure within the first interval. It can control both single pressure and interval pressure. The first pressure and interval pressure can be set according to the pressure test requirements. For example, the first pressure can be fixed at 0.1 MPa, 0.15 MPa, 0.3 MPa, 0.35 MPa, or 0.4 MPa, and the first interval pressure can be 0–0.4 MPa, 0–0.3 MPa, or 0–0.37 MPa. As long as the gas pressure is controlled within this range, it can be output. When the first solenoid valve operates according to the first cycle, it outputs gas at the first interval pressure.

[0078] Optionally, a second pressure reducing valve is used to stabilize the gas pressure output by the first switching valve to a second pressure or to a second pressure range; a third switching valve is used to output gas to the measured element according to the second pressure, or to output gas to the second solenoid valve according to the pressure of the second pressure range; the second solenoid valve is used to operate according to a second cycle under the control of dual timers, so that the gas in the second pressure range is output to the measured element according to the second cycle.

[0079] The pressure reducing valve in the second pressure control gas circuit can reduce the gas pressure to different levels. When it is necessary to control the second pressure output, the pressure is reduced to the corresponding second pressure. When it is necessary to control the pressure output of the second interval, the pressure can be controlled to any pressure within the second interval. It can control both single pressure and interval pressure. The second pressure and interval pressure can be set according to the pressure test requirements. For example, the second pressure can be fixed at 0.5 MPa, 0.55 MPa, 0.6 MPa, 0.7 MPa, 0.8 MPa, or 1 MPa, and the first interval pressure can be 0–0.5 MPa, 0–0.8 MPa, or 0–1 MPa. As long as the gas pressure is controlled within this range, it can be output. When the second solenoid valve operates according to the second cycle, it outputs gas at the second interval pressure.

[0080] Optionally, the second switching valve is a three-position five-way switching valve;

[0081] When the valve core of the second switching valve is in the first working position, the first output terminal of the second switching valve is connected to output gas at the first pressure to the measured component, and the second output terminal is not connected; when the valve core of the second switching valve is in the third working position, the second output terminal of the second switching valve is connected to the first solenoid valve, and the first output terminal is not connected; the first solenoid valve is a two-position three-way solenoid valve. When the valve core of the second switching valve is in the third working position, the first solenoid valve is working and the valve core is in the first working position, and the output terminal of the first solenoid valve is connected to output gas in the first pressure range to the measured component.

[0082] The second switching valve is a three-position five-way switching valve, which has three working positions, from... Figure 2As you can see, the second switching valve 2-2 has three small squares, representing the first working position, the second working position, and the third working position from top to bottom. When the valve core is in the first working position, the gas with the first pressure from the pressure reducing valve is output to the measured component through the first outlet A1 via the first output terminal. When the valve core is in the third working position, the pressure reducing valve can output any pressure within the first pressure range. The pressure of the first range is output to the first solenoid valve from the second output terminal. The gas is output to the measured component from the second outlet A2 via the first solenoid valve. This can achieve both single pressure control and range pressure control. Under the control of the dual timers, the first solenoid valve outputs the pressure of the first range according to the first cycle. For example, it can output 0.3 MPa gas once every 2 seconds or 0.4 MPa gas once every 5 seconds. The first cycle can be set according to the test requirements and is not limited here.

[0083] Optionally, the third switching valve is a three-position five-way solenoid valve; when the valve core of the third switching valve is in the first working position, the first output terminal of the third switching valve is connected to output gas to the measured element according to the second pressure, and the second output terminal is not connected; when the valve core of the third switching valve is in the third working position, the second output terminal of the third switching valve is connected to the second solenoid valve, and the first output terminal is not connected; the second solenoid valve is a two-position three-way solenoid valve; when the valve core of the third switching valve is in the third working position, the second solenoid valve is working and the valve core is in the first working position, and the output terminal of the second solenoid valve is connected to output gas in the second pressure range to the measured element.

[0084] The third switching valve is a three-position five-way switching valve, which has three working positions, from Figure 2 As you can see, the third switching valve 3-2 has three small squares, representing the first working position, the second working position, and the third working position from top to bottom. When the valve core is in the first working position, the gas with the second pressure from the pressure reducing valve is output to the measured component through the first outlet A1 via the first output terminal. When the valve core is in the third working position, the pressure reducing valve can output any pressure within the second pressure range. The pressure of the first range is output from the second output terminal to the second solenoid valve. The gas is output to the measured component from the second outlet A2 via the second solenoid valve. This achieves both single pressure control and range pressure control. Under the control of the dual timers, the second solenoid valve outputs the pressure of the second range according to the second cycle. For example, it can output 0.3 MPa gas once every 2 seconds or 0.4 MPa gas once every 5 seconds. The second cycle can be set according to the test requirements and is not limited here.

[0085] Optionally, when the valve cores of both the second and third switching valves are in the third operating position, the first and second solenoid valves are used to alternately operate in the third cycle according to the control of the dual timers.

[0086] The second output terminal of the second switching valve is connected to the first solenoid valve. The valve core of the first solenoid valve switches between the first working position and the second working position. The first pressure control gas path is used to output gas in the third pressure range.

[0087] or;

[0088] The second output terminal of the third switching valve is connected to the second solenoid valve. The valve core of the second solenoid valve switches between the first working position and the second working position. The second pressure control gas path is used to output gas in the third pressure range.

[0089] When the valve cores of both the second and third switching valves are in the third operating position, it indicates that these two switching valves are used to output gas within the pressure range. The gas is output to the measured element through either the first or second solenoid valve. In this operating state, the first and second solenoid valves are alternately operated within the third cycle by a dual timer. The solenoid valves will continue to operate as long as they are energized. However, when the valve core is in the first operating position, the solenoid valve is open, allowing gas to pass through; when the valve core is in the second operating position, the solenoid valve is closed, preventing gas from passing through. See [link to relevant documentation]. Figure 2 The first small box in the diagram represents the first working position of the first solenoid valve and the second small box represents the second working position. The first and second positions are defined from top to bottom. Assuming the third cycle is 5 seconds, the dual timer can control the first solenoid valve to be energized in the first half of the third cycle and the second solenoid valve to be energized in the second half of the third cycle, meaning each of the first and second solenoid valves operates for 2.5 seconds. In addition, the dual timer can also control the energizing periods of the first and second solenoid valves to be different within the third cycle, i.e., the first solenoid valve is energized for 2 seconds and the second solenoid valve for 3 seconds. The energizing time of the solenoid valves can be specifically set according to the testing needs, so that the multi-functional pneumatic pressure control device can repeatedly perform pressure tests on the tested component under pressure increase and decrease states.

[0090] If the first solenoid valve is activated, the gas path is 1-2 → 2-2 → 2-4 → A2. If the second solenoid valve is activated, the gas path is 1-2 → 3-2 → 3-4 → A2. The output pressure is the gas pressure within the third pressure range. The third pressure range can be the pressure between the maximum pressure of the first pressure reducing valve and the maximum pressure of the second pressure reducing valve. For example, if the maximum pressure of the first pressure reducing valve is 0.4 MPa and the maximum pressure of the second pressure reducing valve is 1 MPa, the third pressure range is 0.4 MPa to 1 MPa. The third pressure range needs to be set and adjusted according to the test requirements.

[0091] Optionally, when the valve core of the second switching valve is in the second operating position, neither the first nor the second output terminal of the second switching valve is connected; similarly, when the valve core of the third switching valve is in the second operating position, neither the first nor the second output terminal of the third switching valve is connected. When the valve cores of both the first and second switching valves are in the second operating position, the switching valves are closed, the output terminals are not connected, and therefore there is no gas output. (See [link]). Figure 2 As shown, in this state, both the second switching valve 2-2 and the third switching valve 3-2 are closed, and the first solenoid valve 2-4 and the second solenoid valve 3-4 are also closed. Only after the first solenoid valve 2-4 and the second solenoid valve 3-4 are energized will the valve core of the solenoid valve be in the first working position.

[0092] Optionally, the first pressure control air circuit further includes: a first pressure gauge 2-3, a second pressure gauge 3-3, and a third pressure gauge 4-1; the first pressure gauge is used to measure and display the gas pressure at the first output terminal of the second switching valve; the second pressure gauge is used to measure and display the gas pressure at the first output terminal of the third switching valve; the third pressure gauge is connected to the first and second solenoid valves in parallel, and is used to measure and display the gas pressure at the output terminal of either the first or second solenoid valve. The pressure gauges can monitor the pressure at each outlet; furthermore, pressure gauges with different ranges can be selected to measure the pressure at different outlets.

[0093] Optionally, the aforementioned multi-functional pressure control device may also include: a filter, a counter, and a relay;

[0094] The filter is connected to the first switching valve to process the gas entering the system and output it to the first switching valve; the counter is connected to the first and second solenoid valves to count the number of times the first or second solenoid valve is actuated; the relay is used to control the on / off state of the first and second solenoid valves. This device can filter the input gas through the filter to keep the gas in a relatively stable state to avoid affecting the test results; the counter can count the number of times the first and second solenoid valves are actuated for subsequent analysis of the test results; and the relay is used to control the actuation of the solenoid valves, that is, the on / off state of the solenoid valves.

[0095] Optionally, when the first pressure control air circuit is working, the second switching valve is in the open state and the third switching valve is in the closed state; when the second pressure control air circuit is working, the second switching valve is in the closed state and the third switching valve is in the open state; when both the first and second pressure control air circuits are working, both the second and third switching valves are in the open state. In the case of controlling a single pressure output, one air circuit can be controlled to work while the other is not. For example, when controlling a low-pressure output, if the first pressure control air circuit is working, the third switching valve in the second pressure control air circuit needs to be closed to prevent airflow into the second pressure control air circuit, and vice versa.

[0096] Optionally, when both the first pressure control air circuit and the second pressure air circuit are working, the first solenoid valve is in the open state and the second solenoid valve is in the closed state.

[0097] or;

[0098] The second solenoid valve is in the open state, and the first solenoid valve is in the closed state.

[0099] When both the first and second control air paths are open, the first solenoid valve can be activated by controlling the second solenoid valve through dual timers, ensuring that only one of the two pressure control air paths can output gas, and the pressure of the output gas is within the third pressure range.

[0100] Example 2

[0101] Embodiment 2 of this utility model provides a portable pressure control box, the main view of which is shown below. Figure 3 As shown, see left view. Figure 4 As shown, it includes:

[0102] The enclosure includes a portable handle and air inlet AIR on the top, a multi-functional air pressure control device inside the enclosure, a first air outlet A1, a second air outlet A2, and a third air outlet A3 on the front of the enclosure, a first pressure reducing valve adjustment knob 21 and a second pressure reducing valve adjustment knob 31, a first switch valve knob 12, a second switch valve knob 22, and a third switch valve knob 32, and a power plug on the side of the enclosure.

[0103] The air inlet and the first switch valve knob are connected to the first switch valve in the multi-functional air pressure control device;

[0104] The first air outlet is connected to the first output terminal of the second switching valve, the second air outlet is connected to the first output terminal of the third switching valve, and the third air outlet is connected to the output terminals of the first and second solenoid valves connected in parallel.

[0105] The first pressure reducing valve adjustment knob is connected to the first pressure reducing valve, the second pressure reducing valve adjustment knob is connected to the second pressure reducing valve, the first switch valve knob is connected to the first switch valve, the second switch valve knob is connected to the second switch valve, and the third switch valve knob is connected to the third switch valve.

[0106] The power plug is connected to the first and second solenoid valves of the multi-functional pneumatic control device to provide power to the first and second solenoid valves.

[0107] Optionally, the portable pressure control box also includes: a counter display screen, a first pressure display screen 23, a second pressure display screen 41, a third pressure display screen 33, and a dual timer knob; the counter display screen is connected to the counter, the first pressure display screen is connected to the first pressure gauge, the second pressure display screen is connected to the second pressure gauge, and the third pressure display screen is connected to the third pressure gauge; the dual timer knob is connected to the dual timers and is used to control the timing of the dual timers.

[0108] The portable pressure control box in this embodiment houses the multi-functional pneumatic control device from Embodiment 1, and includes corresponding switches, knobs, and a display screen on the box to encapsulate the multi-functional pneumatic control device. This control box is easy to carry and can measure test components of different sizes, solving the problem of large test components being difficult to move and inconvenient to test in the prior art.

[0109] The following controls can be achieved using the portable pressure control box described above:

[0110] ①Low-pressure control output: Connect the gas source, turn the first switch valve knob to the "open" position to open the first switch valve, rotate the second switch valve knob 22 to the "low-pressure" output position, rotate the third switch valve knob 32 to the "close" position to close the third switch valve; adjust the first pressure reducing valve knob to the first pressure and output gas at the first pressure through the first gas outlet A1, and display the pressure value through the first pressure gauge 23.

[0111] When the second switch valve knob is turned to "low pressure", it means that the output is based on a fixed first pressure. Here, low pressure means that the first pressure is lower than the second pressure. When the output is low pressure, the third switch valve is closed, so that the second control air circuit is not connected.

[0112] ② High-pressure control output: Connect the gas source, turn the first switch valve knob to the "open" position to open the first switch valve, rotate the third switch valve knob 32 to the "high pressure" output position, rotate the second switch valve knob 22 to the "close" position to close the second switch valve, adjust the second pressure reducing valve knob to the second pressure and output the second pressure gas through the third gas outlet A3, and display the pressure value through the second pressure gauge 33.

[0113] The second switch valve knob being turned to "high pressure" indicates that the output is at a fixed second pressure. Here, "low pressure" refers to the second pressure being higher than the first pressure. Furthermore, when the gas consumption reaches the preset consumption level, the second and third switch valve knobs can be simultaneously adjusted to the low-pressure and high-pressure output positions, respectively, to output high and low pressures simultaneously. Generally, this operation is not recommended as it can cause unstable gas pressure and affect the test results.

[0114] ③ First cycle low pressure control output: Connect the gas source, turn the first switch valve knob to the "open" position, rotate the second switch valve knob to the "range" output position, turn the third switch valve knob to the "close" position, turn on the power, adjust the dual timer knob to make the first solenoid valve operate in the first cycle, adjust the first pressure reducing valve so that the pressure can be adjusted within the first range, and output gas at the corresponding pressure from the second gas outlet A2 according to the first cycle. The pressure value is displayed by the third pressure gauge and the number of times the first solenoid valve operates is recorded by the counter.

[0115] The "adjust to range output position" described in this embodiment refers to the ability to adjust the pressure reducing valve to any pressure value within the range, while the "first pressure output" refers to a fixed single pressure output that cannot be adjusted.

[0116] ④ Second cycle high pressure control output: Connect the gas source, turn the first switch valve knob to the "open" position, rotate the third switch valve knob to the "range" output position, turn the second switch valve knob to the "close" position, connect the power supply, adjust the dual timer knob to make the second solenoid valve operate in the second cycle, adjust the second pressure reducing valve so that the pressure can be adjusted within the second range, and output gas at the corresponding pressure from the second outlet A2 according to the two cycles. The pressure value is displayed by the third pressure gauge and the number of times the second solenoid valve operates is recorded by the counter.

[0117] ⑤ Periodic interval pressure control output: Connect the air source, turn the first switch valve knob to the "open" position, and simultaneously rotate the first switch valve knob and the second switch valve knob to the "interval" output position. Turn on the power, adjust the dual timer knob to make the first solenoid valve or the second solenoid valve operate in the preset period. Adjust the first pressure reducing valve and the second pressure reducing valve according to the third pressure interval and achieve the preset periodic third interval pressure output through the third air outlet A3. The pressure value is displayed by the third pressure gauge and the number of times the first solenoid valve and the second solenoid valve operate is recorded by the counter.

[0118] In this control process, the third pressure range is the maximum range of the first pressure reducing gauge and the second pressure gauge. This means that by adjusting the first and second pressure gauges, the gas pressure is brought within the third pressure range. The circuits of the first and second solenoid valves are reversed. When the first solenoid valve outputs gas at the corresponding pressure, the gas pressure does not return to zero. Instead, it outputs gas again from the second solenoid valve according to the pressure adjusted by the second pressure reducing valve. In other words, the pressure in the third pressure range does not start from 0, but is determined by the pressure adjusted by the two pressure reducing valves. For example, when the third pressure range is 0.4 MPa to 0.6 MPa, if the first pressure reducing valve is adjusted to 0.4 MPa and the second pressure reducing valve is adjusted to 0.6 MPa, with the first solenoid valve activated, gas is output at 0.4 MPa. When the second solenoid valve is activated, the pressure does not start from 0, but instead outputs gas from the second solenoid valve at 0.6 MPa.

[0119] Unless otherwise specifically stated, terms such as processing, calculation, operation, determination, display, etc., may refer to the actions and / or processes of one or more processing or computing systems or similar devices that represent the manipulation and conversion of data representing physical (e.g., electronic) quantities within the registers or memory of the processing system into other data similarly representing physical quantities within the memory, registers, or other such information storage, transmission, or display devices of the processing system. Information and signals can be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the above description can be represented by voltage, current, electromagnetic waves, magnetic fields or particles, light fields or particles, or any combination thereof.

[0120] It should be understood that the specific order or hierarchy of steps in the disclosed process is an example of an exemplary method. Based on design preferences, it should be understood that the specific order or hierarchy of steps in the process may be rearranged without departing from the scope of this disclosure. The appended method claims provide elements of various steps in an exemplary order and are not intended to limit the scope to the specific order or hierarchy described.

[0121] In the above detailed description, various features are combined together in a single embodiment to simplify this disclosure. This approach to disclosure should not be construed as reflecting an intention that embodiments of the claimed subject matter require more features than are explicitly stated in each claim. Rather, as reflected in the appended claims, the present invention is in a state with fewer features than all of the features of the single disclosed embodiment. Therefore, the appended claims are hereby explicitly incorporated into the detailed description, wherein each claim stands alone as a preferred embodiment of the present invention.

[0122] Those skilled in the art will also understand that the various illustrative logic blocks, modules, circuits, and algorithm steps described in conjunction with the embodiments herein can be implemented as electronic hardware, computer software, or a combination thereof. To clearly illustrate the interchangeability between hardware and software, the various illustrative components, blocks, modules, circuits, and steps described above are generally described in terms of their functionality. Whether such functionality is implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system. Those skilled in the art can implement the described functionality in alternative ways for each specific application; however, such implementation decisions should not be construed as departing from the scope of this disclosure.

[0123] The steps of the methods or algorithms described in conjunction with the embodiments herein can be directly embodied in hardware, software modules executed by a processor, or a combination thereof. The software modules can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium well known in the art. An exemplary storage medium is connected to the processor, enabling the processor to read information from and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and storage medium can reside in an ASIC. The ASIC can reside in a user terminal. Alternatively, the processor and storage medium can exist as discrete components in the user terminal.

[0124] For software implementation, the techniques described in this application can be implemented using modules (e.g., procedures, functions, etc.) that perform the functions described in this application. This software code can be stored in memory units and executed by a processor. The memory units can be implemented within the processor or outside the processor; in the latter case, they are communicatively coupled to the processor via various means, as is well known in the art.

[0125] The foregoing description includes examples of one or more embodiments. It is certainly impossible to describe all possible combinations of components or methods in order to describe the above embodiments, but those skilled in the art will recognize that further combinations and arrangements of the various embodiments are possible. Therefore, the embodiments described herein are intended to cover all such changes, modifications, and variations that fall within the scope of the appended claims. Furthermore, the term "comprising" as used in the specification or claims is interpreted in a manner similar to the term "including," as interpreted when used as a conjunction in the claims. Additionally, the use of any term "or" in the specification of the claims is intended to mean "non-exclusive or."

Claims

1. A multifunctional pressure control device, characterized in that, include: A first switching valve, a first pressure control air circuit, a second pressure control air circuit connected in parallel with the first pressure control air circuit, and dual timers; The first switching valve is located before the first and second pressure control air circuits connected in parallel, and is used to control the on / off state of the air source. The first pressure control air circuit includes: a first pressure reducing valve, a second switching valve, and a first solenoid valve. The input end of the first pressure reducing valve is connected to the output end of the first switching valve, and the output end of the first pressure reducing valve is connected to the input end of the second switching valve. The first output end of the second switching valve is connected to the measured element, and the second output end of the second switching valve is connected to the input end of the first solenoid valve. The second pressure control air circuit includes: a second pressure reducing valve, a third switching valve, and a second solenoid valve. The input end of the second pressure reducing valve is connected to the output end of the first switching valve, and the output end of the first pressure reducing valve is connected to the input end of the third switching valve. The first output end of the third switching valve is connected to the measured element, and the second output end of the third switching valve is connected to the input end of the second solenoid valve. The first pressure control gas path is used to output gas at a first pressure or gas within a first pressure range; the second pressure control gas path is used to output gas at a second pressure or gas within a second pressure range, wherein the first pressure is less than the second pressure and the first pressure range is less than the second pressure range. The output terminal of the first solenoid valve is connected in parallel with the output terminal of the second solenoid valve; a dual timer is connected to the first solenoid valve and the second solenoid valve to control the periodic operation of the first solenoid valve and the second solenoid valve.

2. The apparatus as claimed in claim 1, characterized in that, The first pressure reducing valve is used to stabilize the gas pressure output by the first switching valve to a first pressure or to a first pressure range. The second switching valve is used to output gas to the measured element at a first pressure, or to output gas to the first solenoid valve at a pressure within a first pressure range; The first solenoid valve is used to operate according to a first cycle under the control of dual timers, so that the gas in the first pressure range is output to the measured element according to the first cycle.

3. The apparatus as described in claim 2, characterized in that, The second pressure reducing valve is used to stabilize the gas pressure output by the first switching valve to a second pressure or to a second pressure range; The third switching valve is used to output gas to the measured element according to the second pressure, or to output gas to the second solenoid valve according to the pressure of the second pressure range; The second solenoid valve is used to operate according to the second cycle under the control of dual timers, so that the gas in the second pressure range is output to the measured element according to the second cycle.

4. The apparatus as described in claim 3, characterized in that, The second switching valve is a three-position five-way switching valve; When the valve core of the second switching valve is in the first working position, the first output terminal of the second switching valve is connected to output gas at the first pressure to the measured component, and the second output terminal is not connected. When the valve core of the second switching valve is in the third working position, the second output terminal of the second switching valve is connected to the first solenoid valve, and the first output terminal is not connected. The first solenoid valve is a two-position three-way solenoid valve. When the valve core of the second switching valve is in the third working position, the first solenoid valve is working and the valve core is in the first working position. The output end of the first solenoid valve is connected to output the gas in the first pressure range to the measured element.

5. The apparatus as described in claim 4, characterized in that, The third switching valve is a three-position five-way solenoid valve; When the valve core of the third switching valve is in the first working position, the first output terminal of the third switching valve is connected to output gas to the measured element according to the second pressure, and the second output terminal is not connected. When the valve core of the third switching valve is in the third working position, the second output terminal of the third switching valve is connected to the second solenoid valve, and the first output terminal is not connected. The second solenoid valve is a two-position three-way solenoid valve. When the valve core of the third switching valve is in the third working position, the second solenoid valve works and the valve core is in the first working position. The output end of the second solenoid valve is connected to output the gas in the second pressure range to the measured element.

6. The apparatus as claimed in claim 5, characterized in that, When the valve cores of the second and third switching valves are both in the third working position, the first and second solenoid valves are used to alternately operate in the third cycle according to the control of the dual timers. The second output terminal of the second switching valve is connected to the first solenoid valve. The valve core of the first solenoid valve switches between the first working position and the second working position. The first pressure control gas path is used to output gas in the third pressure range. or; The second output terminal of the third switching valve is connected to the second solenoid valve. The valve core of the second solenoid valve switches between the first working position and the second working position. The second pressure control gas path is used to output gas in the third pressure range.

7. The apparatus as claimed in claim 5, characterized in that, When the valve core of the second switching valve is in the second working position, neither the first output terminal nor the second output terminal of the second switching valve is connected. When the valve core of the third switching valve is in the second working position, neither the first output terminal nor the second output terminal of the third switching valve is connected.

8. The apparatus as claimed in claim 1, characterized in that, The first pressure control air circuit further includes: a first pressure gauge, a second pressure gauge, and a third pressure gauge; The first pressure gauge is used to measure and display the gas pressure at the first output terminal of the second switching valve; The second pressure gauge is used to measure and display the gas pressure at the first output terminal of the third switching valve; The third pressure gauge is connected to the first and second solenoid valves in parallel and is used to measure and display the gas pressure at the output end of the first or second solenoid valve.

9. The apparatus as claimed in claim 1, characterized in that, Also includes: Filters, counters, and relays; The filter is connected to the first switching valve and is used to process the gas introduced into the system and output it to the first switching valve; The counter is connected to the first solenoid valve and the second solenoid valve and is used to count the number of times the first solenoid valve or the second solenoid valve is actuated. The relay is used to control the on / off state of the first solenoid valve and the second solenoid valve.

10. The apparatus as claimed in claim 1, characterized in that, When the first pressure control air circuit is working, the second switch valve is in the open state and the third switch valve is in the closed state. When the second pressure control air circuit is working, the second switch valve is in the closed state and the third switch valve is in the open state. When both the first pressure control air circuit and the second pressure air circuit are working, both the second and third switching valves are in the open state.

11. The apparatus as claimed in claim 1, characterized in that, When both the first pressure control air circuit and the second pressure air circuit are working, the first solenoid valve is in the open state and the second solenoid valve is in the closed state. or; The second solenoid valve is in the open state, and the first solenoid valve is in the closed state.

12. A portable pressure control box, characterized in that, include: The enclosure includes a portable handle and air inlet at the top, a multi-functional pressure control device inside the enclosure, a first air outlet, a second air outlet, a third air outlet on the front of the enclosure, a first pressure reducing valve adjustment knob and a second pressure reducing valve adjustment knob, a first switch valve knob, a second switch valve knob, a third switch valve knob, and a power plug on the side of the enclosure. The air inlet and the first switch valve knob are connected to the first switch valve in the multi-functional pressure control device. The first air outlet is connected to the first output terminal of the second switching valve, the second air outlet is connected to the first output terminal of the third switching valve, and the third air outlet is connected to the output terminals of the first and second solenoid valves connected in parallel. The first pressure reducing valve adjustment knob is connected to the first pressure reducing valve, the second pressure reducing valve adjustment knob is connected to the second pressure reducing valve, the first switch valve knob is connected to the first switch valve, the second switch valve knob is connected to the second switch valve, and the third switch valve knob is connected to the third switch valve. The power plug is connected to the first and second solenoid valves of the multi-functional pressure control device to provide power to the first and second solenoid valves.

13. The portable pressure control box as described in claim 12, characterized in that, Also includes: The device includes a counter display, a first pressure display, a second pressure display, a third pressure display, and a dual timer knob. The counter display screen is connected to the counter, the first pressure display screen is connected to the first pressure gauge, the second pressure display screen is connected to the second pressure gauge, and the third pressure display screen is connected to the third pressure gauge. The dual timer knob is connected to the dual timers and is used to control the timing of the dual timers.

Images