Vacuum pump testing device

Abstract

The utility model discloses a vacuum pump testing device which comprises a hand valve, an electromagnetic valve and a control module, the electromagnetic valve is electrically connected with the control module, one end of the hand valve is connected with a vacuum pump, and the other end of the hand valve is connected with the electromagnetic valve. The electromagnetic valve can control the air exhaust condition of the vacuum pump connected with the electromagnetic valve, the control module controls and collects the opening of the electromagnetic valve, and the opening time, the opening interval time and the opening and closing frequency of the electromagnetic valve can be set, so that a special person does not need to be set for guarding, and the time control of opening and air exhaust of the vacuum pump can be more accurate.

Description

Technical Field

[0001] The present application relates to the technical field of vacuum pumps, and in particular to a vacuum pump testing device. Background Art

[0002] A vacuum pump is a device or equipment that uses mechanical, physical, chemical or physicochemical methods to evacuate the container to create a vacuum.

[0003] After assembly, vacuum pumps need to be tested using two methods: static and dynamic. The static method measures the pressure difference between the pump inlet and outlet and the time it takes to determine the pump's pressure range after the pump reaches a stable state. The dynamic method measures the pressure difference between the inlet and outlet and the time it takes to determine the pump's pressure range during operation.

[0004] When a vacuum pump is dynamically tested, the valve opening and closing time needs to be manually controlled, and a specialist needs to be assigned to control it during the test, resulting in a waste of manpower. Utility Model Content

[0005] The technical problem to be solved by this application is that when a vacuum pump is subjected to dynamic testing, the valve opening and closing time needs to be manually controlled, and a specialist needs to be assigned to perform control during the test, resulting in a waste of manpower.

[0006] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a vacuum pump testing device.

[0007] The utility model discloses a vacuum pump testing device, which comprises a hand valve, a solenoid valve and a control module. The solenoid valve is electrically connected to the control module. One end of the hand valve is connected to the vacuum pump, and the other end is connected to the solenoid valve.

[0008] Preferably, the solenoid valve includes a timing unit, a control unit, and a power supply unit. The power supply unit is connected to the control unit, the power supply unit is connected to an external power source, and the timing unit is connected to the control unit.

[0009] Preferably, the hand valve includes a manual switch, a first air channel, and a second air channel, the first air channel is connected to the second air channel, and the manual switch is installed at a position where the first air channel is connected to the second air channel.

[0010] Preferably, the first air channel is connected to the air outlet of a vacuum pump.

[0011] Preferably, the solenoid valve includes a controller and an airway, wherein the controller is arranged in the airway, and the controller controls the flow of gas in the airway;

[0012] The airway inlet is connected to the second airway.

[0013] Preferably, the controller is provided with a timing switch, an interval adjustment switch and a connection end, the timing unit is respectively connected to the timing switch and the interval adjustment switch, and the connection end is respectively connected to the power supply unit and the control unit.

[0014] Preferably, a sealing assembly is included, and the sealing assembly is respectively connected to the hand valve and the solenoid valve.

[0015] Preferably, the sealing assembly includes a sealing clamp and a sealing ring, the sealing ring is respectively connected to the inner wall of the second air duct and the inner wall of the air duct, and the sealing clamp is respectively installed at the air duct inlet and the second air duct.

[0016] Preferably, the sealing clamp adopts the KF40 model.

[0017] Preferably, the hand valve is L-shaped.

[0018] The above technical solution provided by this application has the following advantages compared with the existing technology:

[0019] The present application provides a vacuum pump testing device, in which a solenoid valve can control the exhaust status of a connected vacuum pump, and a control module controls and collects the opening of the solenoid valve. The solenoid valve can set the opening time, opening interval time and number of switches, thereby eliminating the need for a specialist to monitor it, and can also improve the control of the time for the vacuum pump to start exhaust more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention, and together with the description, serve to explain the principles of the present invention.

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 A schematic structural diagram of a vacuum pump testing device provided in this application;

[0023] Figure 2 A schematic diagram of the structure of a hand valve of a vacuum pump testing device provided in this application;

[0024] Figure 3 A schematic diagram of the structure of a solenoid valve of a vacuum pump testing device provided in this application;

[0025] Figure 4This is a structural block diagram of a controller of a vacuum pump testing device provided in this application.

[0026] Description of reference numerals:

[0027] 1. Vacuum pump testing device; 2. Vacuum pump to be tested;

[0028] 11. Hand valve; 111. Manual switch; 112. First airway; 113. Second airway;

[0029] 12. Solenoid valve;

[0030] 121. Controller; 1211. Timing unit; 1212. Control unit; 1213. Power supply unit;

[0031] 122, airway; 123, timer switch; 124, interval adjustment switch; 125, connection terminal;

[0032] 13. Control module;

[0033] 14. Sealing assembly. DETAILED DESCRIPTION

[0034] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0035] See Figure 1-4 The utility model discloses a vacuum pump testing device 1, which can be used to test medium and large vacuum pumps to determine whether the vacuum pumps are operating normally.

[0036] The vacuum pump testing device 1 includes a manual valve 11 , a solenoid valve 12 , and a control module 13 . The solenoid valve 12 is electrically connected to the control module 13 . One end of the manual valve 11 is connected to the vacuum pump, and the other end is connected to the solenoid valve 12 .

[0037] Specifically, the hand valve 11 is installed at the air outlet of the vacuum pump to be tested, one end of the solenoid valve 12 is installed on the hand valve 11, and the other end is installed on the test mechanism. The control module 13 controls and detects the solenoid valve 12, and the solenoid valve 12 is used to control the extraction of air from the vacuum pump 2 to be tested.

[0038] It can be understood that the solenoid valve 12 can control the exhaust of the connected vacuum pump, and the control module 13 controls and collects the opening of the solenoid valve 12. The solenoid valve 12 can set the opening time, opening interval time and number of switches, so there is no need to set up a specialist to watch over it, and the time control of the vacuum pump to open the exhaust can be improved more accurately.

[0039] The hand valve 11 includes a manual switch 111, a first air channel 112, and a second air channel 113. The first air channel 112 is connected to the second air channel 113. The manual switch 111 is installed at a position where the first air channel 112 and the second air channel 113 are connected. The first air channel 112 is connected to the air outlet of the vacuum pump.

[0040] Specifically, the hand valve 11 is arranged at the air outlet of the vacuum pump to be tested, wherein the first air channel 112 is connected to the second air channel 113, and the first air channel 112 and the second air channel 113 are respectively connected to the vacuum pump and the solenoid valve 12. The solenoid valve 12 can control the gas circulation in the air channel 122. The hand valve 11 is provided with a manual switch 111. The manual switch 111 allows the operator to manually close it, thereby blocking the connection between the first air channel 112 and the second air channel 113, so that if there are problems such as mechanism failure during the test, the operator can manually operate and handle it, thereby improving the safety of the test process.

[0041] In particular, the hand valve 11 is L-shaped, that is, in this embodiment, the hand valve 11 adopts an L-shaped hand valve 11 to change the direction of the airway 122 so that the airway 122 adapts to the airway 122 of the test mechanism, thereby facilitating connection with the test mechanism.

[0042] The solenoid valve 12 includes a controller 121 and an air passage 122. The controller 121 is disposed in the air passage 122 and controls the flow of gas in the air passage 122. The inlet of the air passage 122 is connected to the second air passage 113. Specifically, the controller 121 blocks the air passage 122. The controller 121 is electrically connected to the control module 13. The controller 121 transmits signals to the control module 13 via electrical signals. The control module 13 can obtain the current valve opening status of the controller 121 and the status of the interval valve opening, thereby summarizing the data, making it easier for subsequent operators to combine the test results with the valve opening status to obtain the test status of the vacuum pump 2 to be tested.

[0043] The solenoid valve 12 includes a timing unit 1211 , a control unit 1212 , and a power supply unit 1213 . The power supply unit 1213 is connected to the control unit 1212 , and the power supply unit 1213 is connected to an external power source. The timing unit 1211 is connected to the control unit 1212 .

[0044] Specifically, the timing unit 1211, the control unit 1212 and the power supply unit 1213 are arranged in the controller 121. The timing unit 1211 can calculate the opening time of the solenoid valve 12, the control unit 1212 controls the gas flow in the airway 122, and the power supply unit 1213 supplies power to each unit in the controller 121.

[0045] The controller 121 is provided with a timing switch 123, an interval adjustment switch 124, and a connection terminal 125. The timing unit 1211 is connected to the timing switch 123 and the interval adjustment switch 124, respectively. The connection terminal 125 is connected to the power supply unit 1213 and the control unit 1212, respectively. Specifically, the timing switch 123 is used to set the valve opening time, and the interval adjustment switch 124 is used to set the interval time between each opening and closing of the solenoid valve 12. The connection terminal 125 is used for power supply. The power supply unit 1213 is powered by the connection terminal 125 and inputs a 220V power supply, so that the controller 121 can operate normally. The timing switch 123 can control the valve opening time of the solenoid valve 12, and the interval adjustment switch 124 can adjust the valve opening interval time. The timing unit 1211 records the settings of the two switches. The control unit 1212 can control the start and close of the solenoid valve 12, which can accurately control the opening and closing time of the solenoid valve 12, freeing up human hands and avoiding errors caused by manual operation.

[0046] In particular, the adjustment time range of the timing switch 123 is 0.5 seconds to 10 seconds, and the adjustment time range of the interval adjustment switch 124 is 1 minute to 45 minutes.

[0047] The vacuum pump testing device 1 includes a sealing assembly 14, which is respectively connected to the hand valve 11 and the solenoid valve 12. Specifically, after the hand valve 11 and the solenoid valve 12 are connected to the vacuum pump 2 to be tested, the sealing of the connection needs to be ensured. The sealing assembly 14 is installed at the connection between the vacuum pump 2 to be tested, the hand valve 11, and the solenoid valve 12, which can increase the sealing of the connection and avoid affecting the test results.

[0048] The sealing assembly 14 includes a sealing clamp and a sealing ring. The sealing ring connects the inner wall of the second air passage 113 and the inner wall of the air passage 122, respectively. The sealing clamp is installed at the inlet of the air passage 122 and the second air passage 113, respectively. Specifically, the sealing ring is first installed on the inner surface of the connection between the vacuum pump 2 to be tested, the manual valve 11, and the solenoid valve 12. The sealing clamp is then wrapped around the outer surface. The sealing clamp is equipped with a locking mechanism to tighten the connection and enhance the sealing performance.

[0049] Particularly, the sealing clamp adopts the KF40 model.

[0050] Optionally, the sealing ring is made of elastic material.

[0051] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0054] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0055] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0056] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0057] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, as long as these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

[0058] The above description is a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A vacuum pump testing device, characterized in that: It includes a hand valve, a solenoid valve, and a control module. The solenoid valve is electrically connected to the control module. One end of the hand valve is connected to a vacuum pump, and the other end is connected to the solenoid valve. The solenoid valve includes a timing unit, a control unit, and a power supply unit, wherein the power supply unit is connected to the control unit, the power supply unit is connected to an external power supply, and the timing unit is connected to the control unit; The control module controls and collects the opening of the solenoid valve, and the solenoid valve sets the opening time, opening interval time and number of switches.

2. The vacuum pump testing device according to claim 1, characterized in that: The hand valve includes a manual switch, a first air channel, and a second air channel. The first air channel is connected to the second air channel. The manual switch is installed at a position where the first air channel and the second air channel are connected.

3. The vacuum pump testing device according to claim 2, characterized in that: The first air channel is connected to the air outlet of the vacuum pump.

4. The vacuum pump testing device according to claim 2, characterized in that: The solenoid valve includes a controller and an airway, wherein the controller is arranged in the airway and controls the flow of gas in the airway; The airway inlet is connected to the second airway; The controller is electrically connected to the control module. The controller transmits signals to the control module through electrical signals. The control module obtains the current valve opening status of the controller and the interval valve opening status.

5. The vacuum pump testing device according to claim 4, characterized in that: The controller is provided with a timing switch, an interval adjustment switch and a connection end, the timing unit is respectively connected to the timing switch and the interval adjustment switch, and the connection end is respectively connected to the power supply unit and the control unit; The timing switch is used to set the valve opening time, the interval adjustment switch is used to set the interval time of each switch of the solenoid valve, and the connection end is used for power supply; The timing switch controls the valve opening time of the solenoid valve, the interval adjustment switch can adjust the valve opening interval time, and the timing unit records the settings of the two switches.

6. The vacuum pump testing device according to claim 5, characterized in that: The adjustment range of the timer switch is 0.5 seconds to 10 seconds, and the adjustment range of the interval adjustment switch is 1 minute to 45 minutes.

7. The vacuum pump testing device according to claim 1, characterized in that: It includes a sealing component, which is respectively connected to the hand valve and the solenoid valve.

8. The vacuum pump testing device according to claim 7, characterized in that: The sealing assembly includes a sealing clamp and a sealing ring, the sealing ring is respectively connected to the inner wall of the second air channel and the inner wall of the air channel, and the sealing clamp is respectively installed at the air channel inlet and the second air channel.

9. The vacuum pump testing device according to claim 8, characterized in that: The sealing clamp adopts KF40 model.

10. The vacuum pump testing device according to claim 1, characterized in that: The hand valve is L-shaped.

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