A small vacuum performance testing device and system

Abstract

The present invention provides a small vacuum performance testing device and system, which realizes the measurement of the vacuum performance of vacuum pumps and vacuum workpieces by providing a miniaturized and portable testing device and a matching testing system, effectively improving the inconvenience and complexity of measurement in the prior art.

Description

Technical Field

[0001] The present invention relates to a detection device, and particularly to a small vacuum performance testing device and system. Background Art

[0002] In industrial production, strict requirements are imposed on the airtightness of equipment or equipment components in many fields, such as automotive parts, electronic sensors, solenoid valves, refrigeration equipment and components, etc. Therefore, during the production process, manufacturers will conduct vacuum degree detection on various equipment or workpieces they produce to ensure that the products produced meet the airtightness requirements of their respective fields. Therefore, the performance of the vacuum pump is crucial, which not only affects production efficiency but also has a great impact on product quality control.

[0003] However, the current detection of the performance of vacuum pumps is often relatively complex. For example, the invention patent with the application number 201910545122.1 discloses a vacuum pump performance testing system and method based on cloud technology. This system needs to select appropriate test covers, intake pipes, exhaust pipes, reducing joints, flow meters, and vacuum gauges according to the model parameters of the vacuum pump to be tested to complete the assembly of the testing system, which brings a large amount of assembly work to actual operation and has the disadvantage of cumbersome use and operation. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a small vacuum performance testing device and system, which can conveniently measure the vacuum performance of a vacuum pump without modifying the existing production line.

[0005] The present invention adopts the following technical solutions to achieve the above purpose:

[0006] In a first aspect, the present invention provides a small vacuum performance testing device, including a sealed pipeline, a vacuum pressure sensor, a first solenoid valve, a second solenoid valve, a third solenoid valve, and a first test joint;

[0007] Among them, the sealed pipeline includes four connection ports. The first connection port of the sealed pipeline is connected to the vacuum pressure sensor. The second connection port of the sealed pipeline is connected to one end of the first solenoid valve. The other end of the first solenoid valve is connected to the first test joint. The third connection port of the sealed pipeline is connected to one end of the second solenoid valve. The other end of the second solenoid valve is suspended. The fourth connection port of the sealed pipeline is connected to one end of the third solenoid valve. The other end of the third solenoid valve is suspended;

[0008] The vacuum pressure sensor is used to detect the vacuum degree inside the sealed pipeline.

[0009] In an embodiment of the present invention, the first test connector includes an output end and two detection access ends;

[0010] Wherein, self-sealing male connectors are sleeved on both of the two detection access ends;

[0011] The output end is connected to the first solenoid valve.

[0012] In an embodiment of the present invention, the small vacuum performance test tooling further includes a load simulation device;

[0013] The load simulation device is connected to the other end of the second solenoid valve.

[0014] In a second aspect, the present invention further provides a vacuum performance test system, which includes the small vacuum pump performance test device described in the first aspect of the present invention, and further includes a main control device;

[0015] Wherein, the main control device is communicatively connected to the vacuum pressure sensor;

[0016] The main control device is also respectively communicatively connected to the control ends of the first solenoid valve, the second solenoid valve and the third solenoid valve;

[0017] The main control device is configured to receive the vacuum degree data in the sealed pipeline acquired by the vacuum pressure sensor;

[0018] The main control device is also configured to control the opening or closing of the first solenoid valve, the second solenoid valve and the third solenoid valve.

[0019] In an embodiment of the present invention, the main control device includes an identification module, a control module and a data processing module;

[0020] Wherein, the identification module is configured to obtain the identification information of the vacuum pump to be tested;

[0021] The data processing module is configured to read a preset vacuum pump database, wherein the preset vacuum pump database includes at least one vacuum pump parameter information and preset vacuum pump test parameters matching the vacuum pump parameter information;

[0022] The data processing module is also configured to obtain the preset vacuum pump test parameters with the vacuum pump parameter information matching the identification information from the preset vacuum pump database;

[0023] The control module is configured to respectively control the opening or closing of the first solenoid valve, the second solenoid valve and the third solenoid valve according to the preset vacuum pump test parameters;

[0024] The data processing module is further configured to determine whether the vacuum pumping performance of the vacuum pump to be tested is qualified according to the vacuum degree data acquired by the vacuum pressure sensor, and send the determination result to the user.

[0025] In an embodiment of the present invention, the main control device further includes an input module, and the input module is configured to acquire the vacuum pump parameter information and the preset vacuum pump test parameters input by the user;

[0026] The data processing module is further configured to write the vacuum pump parameter information and the preset vacuum pump test parameters received by the input module into a preset vacuum pump database.

[0027] In an embodiment of the present invention, the main control device further includes a curve generation module and a historical query module;

[0028] The curve generation module is configured to generate a vacuum pumping performance curve of the vacuum pump to be tested according to the vacuum degree data acquired by the vacuum pressure sensor;

[0029] The data processing module is further configured to write the identification information of the vacuum pump to be tested and the vacuum performance curve into a historical database;

[0030] The historical query module is configured to acquire a matching vacuum performance curve from the historical database according to the identification information acquired by the identification module;

[0031] The data processing module is further configured to send the acquired vacuum performance curve to the user.

[0032] In a third aspect, the present invention provides a small vacuum performance testing device, including a sealed pipeline, a vacuum pressure sensor, a fourth solenoid valve, a fifth solenoid valve, a second test joint, and a test workpiece joint;

[0033] Wherein, the sealed pipeline includes four connection ports. The first connection port of the sealed pipeline is connected to the vacuum pressure sensor. The second connection port of the sealed pipeline is connected to one end of the fourth solenoid valve. The other end of the fourth solenoid valve is connected to the second test joint. The third connection port of the sealed pipeline is connected to one end of the fifth solenoid valve. The other end of the fifth solenoid valve is suspended. The fourth connection port of the sealed pipeline is connected to one end of the test workpiece joint. The other end of the test workpiece joint is sleeved with a corrugated pipe, and the other end of the corrugated pipe is sleeved with a self-sealing female joint;

[0034] The vacuum pressure sensor is used to detect the vacuum degree in the sealed pipeline.

[0035] In an embodiment of the present invention, the second test joint includes an output end and two detection access ends;

[0036] Wherein, self - sealing male connectors are sleeved on both of the two detection access ends;

[0037] The output end is connected to the first solenoid valve.

[0038] Fourthly, the present invention also provides a vacuum performance testing system, which includes the small vacuum pump performance testing device described in the third aspect of the present invention, and further includes a main control device;

[0039] Wherein, the main control device is communicatively connected to the vacuum pressure sensor;

[0040] The main control device is also respectively communicatively connected to the control ends of the fourth solenoid valve and the fifth solenoid valve;

[0041] The main control device is used to receive the vacuum degree data in the sealed pipeline acquired by the vacuum pressure sensor;

[0042] The main control device is also used to control the opening or closing of the fourth solenoid valve and the fifth solenoid valve.

[0043] In an embodiment of the present invention, the main control device includes an identification module, a control module, and a data processing module;

[0044] Wherein, the identification module is used to acquire the identification information of the vacuum pump to be tested;

[0045] The data processing module is used to read a preset vacuum pump database, wherein the preset vacuum pump database includes at least one vacuum pump parameter information and preset vacuum pump test parameters matching the vacuum pump parameter information;

[0046] The data processing module is also used to acquire the preset vacuum pump test parameters whose vacuum pump parameter information matches the identification information from the preset vacuum pump database;

[0047] The control module is used to respectively control the opening or closing of the fourth solenoid valve and the fifth solenoid valve according to the preset vacuum pump test parameters;

[0048] The data processing module is also used to judge whether the vacuum pumping performance of the vacuum pump to be tested is qualified according to the vacuum degree data in the sealed pipeline acquired by the vacuum pressure sensor, and send the judgment result to the user.

[0049] In an embodiment of the present invention, the main control device further includes an input module, and the input module is used to acquire the vacuum pump parameter information and the preset vacuum pump test parameters input by the user;

[0050] The data processing module is further configured to write the vacuum pump parameter information and the preset vacuum pump test parameters received by the input module into a preset vacuum pump database.

[0051] In an embodiment of the present invention, the main control device further includes a curve generation module and a history query module;

[0052] The identification module is further configured to obtain the identification information of the workpiece to be tested;

[0053] The data processing module is further configured to read a preset workpiece database, where the preset workpiece database includes at least one workpiece type information and preset workpiece test parameters matching the workpiece type information;

[0054] The control module is configured to respectively control the opening or closing of the fourth solenoid valve and the fifth solenoid valve according to the preset workpiece test parameters;

[0055] The data processing module is further configured to judge whether the pressure holding performance of the workpiece to be tested is qualified according to the vacuum degree data obtained by the vacuum pressure sensor, and send the judgment result to the user.

[0056] Advantages of the present invention:

[0057] The present invention provides a small vacuum performance testing device and system. By providing a miniaturized and portable testing tooling and a matching testing system, the performance testing of the vacuum pump and the pressure decay testing of the attached vacuum workpiece are realized, effectively improving the inconvenience and complexity of measurement in the prior art;

[0058] At the same time, the testing tooling and testing system provided by the present invention can adapt to the actual production environment of the current factory, be directly used on the existing factory production line, without the need for the user to transform the production line. At the same time, the measurement process is automatically controlled by the system, without too much manual intervention, reducing the management cost of the user. Description of the Drawings

[0059] Figure 1 It is a schematic structural diagram of a small vacuum performance testing device in an embodiment of the present invention;

[0060] Figure 2 It is a schematic structural diagram of a vacuum performance testing system in an embodiment of the present invention;

[0061] Figure 3 It is a schematic structural diagram of a small vacuum performance testing device in an embodiment of the present invention;

[0062] Figure 4 It is a schematic structural diagram of a vacuum performance testing system in an embodiment of the present invention. Detailed Implementation Modes

[0063] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions are only used to explain the present invention, but not to limit the present invention.

[0064] In the first aspect, as Figure 1 shown, the present invention provides a small vacuum performance testing device, including a sealed pipeline 11, a vacuum pressure sensor 12, a first solenoid valve 13, a second solenoid valve 14, a third solenoid valve 15 and a first test joint 16;

[0065] Among them, the sealed pipeline 11 includes four connection ports. The first connection port of the sealed pipeline 11 is connected to the vacuum pressure sensor 12. The second connection port of the sealed pipeline 11 is connected to one end of the first solenoid valve 13. The other end of the first solenoid valve 13 is connected to the first test joint 16. The third connection port of the sealed pipeline 11 is connected to one end of the second solenoid valve 14. The other end of the second solenoid valve 14 is suspended. The fourth connection port of the sealed pipeline 11 is connected to one end of the third solenoid valve 15. The other end of the third solenoid valve 15 is suspended;

[0066] The vacuum pressure sensor 12 is used to detect the vacuum degree in the sealed pipeline 11;

[0067] The first test joint 16 includes an output end and two detection access ends;

[0068] Among them, self-sealing male joints 161 are sleeved on both of the two detection access ends;

[0069] The output end is connected to the first solenoid valve 13;

[0070] The small vacuum performance testing tooling further includes a load simulation device 17;

[0071] The load simulation device 17 is connected to the other end of the second solenoid valve 14.

[0072] In the second aspect, as Figure 2 described, the present invention further provides a vacuum performance testing system, including the small vacuum performance testing device described in the first aspect of the present invention, and further including a main control device 18;

[0073] Among them, the main control device 18 is communicatively connected to the vacuum pressure sensor 12;

[0074] The main control device 18 is also communicatively connected to the control ends of the first solenoid valve 13, the second solenoid valve 14 and the third solenoid valve 15 respectively;

[0075] The main control device 18 is configured to receive the vacuum degree data in the sealed pipeline 11 acquired by the vacuum pressure sensor 12;

[0076] The main control device 18 is further configured to control the opening or closing of the first solenoid valve 13, the second solenoid valve 14, and the third solenoid valve 15.

[0077] In an embodiment of the present invention, the main control device 18 includes an identification module, a control module, and a data processing module;

[0078] Wherein, the identification module is configured to obtain the identification information of the vacuum pump to be tested;

[0079] The data processing module is configured to read a preset vacuum pump database, wherein the preset vacuum pump database includes at least one vacuum pump parameter information and preset vacuum pump test parameters matched with the vacuum pump parameter information;

[0080] The data processing module is further configured to obtain the preset vacuum pump test parameters with the vacuum pump parameter information matched with the identification information from the preset vacuum pump database;

[0081] The control module is configured to control the opening or closing of the first solenoid valve 13, the second solenoid valve 14, and the third solenoid valve 15 respectively according to the preset vacuum pump test parameters;

[0082] The data processing module is further configured to determine whether the vacuum pumping performance of the vacuum pump to be tested is qualified according to the vacuum degree data acquired by the vacuum pressure sensor 12, and send the judgment result to the user.

[0083] In an embodiment of the present invention, the main control device 18 further includes an input module, and the input module is configured to obtain the vacuum pump parameter information and preset vacuum pump test parameters input by the user;

[0084] The data processing module is further configured to write the vacuum pump parameter information and preset vacuum pump test parameters received by the input module into the preset vacuum pump database.

[0085] In an embodiment of the present invention, the main control device 18 further includes a curve generation module and a history query module;

[0086] The curve generation module is configured to generate a vacuum pumping performance curve of the vacuum pump to be tested according to the vacuum degree data acquired by the vacuum pressure sensor 12;

[0087] The data processing module is further configured to write the identification information of the vacuum pump to be tested and the vacuum performance curve into the history database;

[0088] The historical query module is configured to obtain a matching vacuum performance curve from the historical database according to the identification information of the tool obtained by the identification module;

[0089] The data processing module is further configured to send the obtained vacuum performance curve to the user.

[0090] Specifically, in a specific application scenario of the present invention, the main control device is an upper computer with a code scanning device and a control system;

[0091] When it is necessary to test the vacuum pump, the tester connects the two male connectors 161 of the first test joint 16 to the vacuum pump to be tested, and reads the identification code on the vacuum pump to be tested through the code scanning device; the upper computer obtains the test parameters matching the vacuum model parameters from the preset vacuum pump database according to the obtained identification code of the vacuum pump. Specifically, the test parameters include the vacuum pump model, the vacuum pumping time, and the preset evacuation value; the upper computer first controls the first solenoid valve 13 to open, and controls the second solenoid valve 14 and the third solenoid valve 15 to close. At this time, the vacuum pump starts the vacuum pumping operation, and the vacuum pressure sensor 12 continuously obtains the vacuum degree data in the sealed pipeline 11; when the upper computer determines that the vacuum pumping time has reached, it controls the first solenoid valve 13 to close, and controls the second solenoid valve 14 and the third solenoid valve 15 to open to restore the atmospheric pressure in the sealed pipeline 11 to prepare for the next test; at the same time, the upper computer determines whether the performance of the vacuum pump to be tested is qualified according to the vacuum degree data obtained by the vacuum pressure sensor 12, and sends the judgment result to the user;

[0092] Furthermore, the upper computer can also generate a vacuum degree curve of the vacuum pump to be tested according to the vacuum degree data obtained by the vacuum pressure sensor 12, and write the vacuum degree curve and the identification code of the vacuum pump to be tested into the historical database;

[0093] When the user scans the identification code of the vacuum pump to be tested, the upper computer can obtain the vacuum degree curve matching the identification code of the vacuum pump to be tested from the historical database and send it to the user, so that the user can compare the vacuum pumping performance of the vacuum pump to be tested at different times, thereby judging whether the vacuum pump has a performance decay situation.

[0094] In another specific application scenario of the present invention, the small vacuum performance test tooling is also equipped with a load simulation device 17 to simulate the vacuum pumping performance of the vacuum pump in the actual working environment. Specifically, the load simulation device 17 is a sealed tank;

[0095] Then, following the above example, when conducting the performance test of the vacuum pump, the host computer first controls the opening of the first solenoid valve 13 and the second solenoid valve 14, and controls the closing of the third solenoid valve 15. At this time, the vacuum pump starts the vacuuming operation, and the vacuum pressure sensor 12 continuously obtains the vacuum degree data in the sealed pipeline 11 and the sealed tank 17. When the host computer determines that the vacuuming time has been reached, it controls the closing of the first solenoid valve 13 and controls the opening of the third solenoid valve 15 to restore the atmospheric pressure in the sealed pipeline 11 and the sealed tank 17.

[0096] Thirdly, as Figure 3 shown, the present invention provides a small vacuum performance testing device, including a sealed pipeline 21, a vacuum pressure sensor 22, a fourth solenoid valve 23, a fifth solenoid valve 24, a second test joint 25, and a test workpiece joint 26;

[0097] Among them, the sealed pipeline 21 includes four connection ports. The first connection port of the sealed pipeline 21 is connected to the vacuum pressure sensor 22. The second connection port of the sealed pipeline 21 is connected to one end of the fourth solenoid valve 23. The other end of the fourth solenoid valve 23 is connected to the second test joint 25. The third connection port of the sealed pipeline 21 is connected to one end of the fifth solenoid valve 24. The other end of the fifth solenoid valve 24 is suspended. The fourth connection port of the sealed pipeline 21 is connected to one end of the test workpiece joint 26. The other end of the test workpiece joint 26 is sleeved with a corrugated pipe 261. The other end of the corrugated pipe 261 is sleeved with a self-sealing female joint 262;

[0098] The vacuum pressure sensor 22 is used to detect the vacuum degree in the sealed pipeline 21.

[0099] In an embodiment of the present invention, the second test joint 25 includes an output end and two detection access ends;

[0100] Among them, self-sealing male joints 251 are sleeved on both of the two detection access ends;

[0101] The output end is connected to the first solenoid valve.

[0102] Fourthly, as Figure 4 shown, the present invention further provides a vacuum performance testing system, including the small vacuum pump performance testing device described in the third aspect of the present invention, and further including a main control device 27;

[0103] Among them, the main control device 27 is communicatively connected to the vacuum pressure sensor 22;

[0104] The main control device 27 is also communicatively connected to the control ends of the fourth solenoid valve 23 and the fifth solenoid valve 24 respectively;

[0105] The main control device 27 is configured to receive the vacuum degree data in the sealed pipeline 21 acquired by the vacuum pressure sensor 22;

[0106] The main control device 27 is further configured to control the opening or closing of the fourth solenoid valve 23 and the fifth solenoid valve 24.

[0107] In an embodiment of the present invention, the main control device 27 includes an identification module, a control module, and a data processing module;

[0108] Among them, the identification module is configured to obtain the identification information of the vacuum pump to be tested;

[0109] The data processing module is configured to read a preset vacuum pump database, where the preset vacuum pump database includes at least one vacuum pump parameter information and preset vacuum pump test parameters matching the vacuum pump parameter information;

[0110] The data processing module is further configured to obtain the preset vacuum pump test parameters with the vacuum pump parameter information matching the identification information from the preset vacuum pump database;

[0111] The control module is configured to control the opening or closing of the fourth solenoid valve 23 and the fifth solenoid valve 24 respectively according to the preset vacuum pump test parameters;

[0112] The data processing module is further configured to determine whether the vacuum pumping performance of the vacuum pump to be tested is qualified according to the vacuum degree data in the sealed pipeline 21 acquired by the vacuum pressure sensor 22, and send the judgment result to the user.

[0113] In an embodiment of the present invention, the main control device 27 further includes an input module, and the input module is configured to obtain the vacuum pump parameter information and preset vacuum pump test parameters input by the user;

[0114] The data processing module is further configured to write the vacuum pump parameter information and preset vacuum pump test parameters received by the input module into the preset vacuum pump database.

[0115] In an embodiment of the present invention, the main control device 27 further includes a curve generation module and a history query module;

[0116] The identification module is further configured to obtain the identification information of the workpiece to be tested;

[0117] The data processing module is further configured to read a preset workpiece database, where the preset workpiece database includes at least one workpiece type information and preset workpiece test parameters matching the workpiece type information;

[0118] The control module is used to control the opening or closing of the fourth solenoid valve 23 and the fifth solenoid valve 24 respectively according to the preset workpiece test parameters;

[0119] The data processing module is further used to judge whether the pressure-holding performance of the workpiece to be tested is qualified according to the vacuum degree data obtained by the vacuum pressure sensor 22, and send the judgment result to the user.

[0120] Specifically, in a specific application scenario of the present invention, the main control device is an upper computer with a code scanning device and a control system;

[0121] When it is necessary to test the vacuum pump, the tester connects the two male connectors 251 of the second test joint 25 to the vacuum pump to be tested, and reads the identification code on the vacuum pump to be tested through the code scanning device; the upper computer obtains the test parameters matching the vacuum model parameters from the preset vacuum pump database according to the obtained identification code of the vacuum pump. Specifically, the test parameters include the vacuum pump model, the vacuum pumping time and the preset evacuation value; the upper computer first controls the fourth solenoid valve 23 to open and controls the fifth solenoid valve 24 to close. At this time, the vacuum pump starts the vacuum pumping operation, and the vacuum pressure sensor 22 obtains the vacuum degree data in the sealed pipeline 21 in real time; when the upper computer judges that the vacuum pumping time has reached, it controls the fourth solenoid valve 23 to close and controls the fifth solenoid valve 24 to open to restore the atmospheric pressure in the sealed pipeline 21 for the next test; at the same time, the upper computer judges whether the performance of the vacuum pump to be tested is qualified according to the vacuum degree data obtained by the vacuum pressure sensor 22, and sends the judgment result to the user;

[0122] Furthermore, the above-mentioned vacuum performance test system can also perform a pressure decay test on the workpiece to confirm the pressure-holding performance of the vacuum workpiece;

[0123] When a pressure-holding test is required, the tester connects to the workpiece to be tested through the female connector 262, and at the same time scans the identification code on the workpiece to be tested through the code scanning device. The upper computer obtains the test parameters matching the workpiece type from the preset workpiece database according to the obtained identification code of the workpiece to be tested. Specifically, the test parameters include the workpiece model, the vacuum pumping time, the pressure-holding time and the preset pressure-holding value;

[0124] The host computer first controls the fourth solenoid valve 23 to open and controls the fifth solenoid valve 24 to close. At this time, the vacuum pump starts to evacuate the workpiece; when the host computer determines that the evacuation time has been reached, it controls the fourth solenoid valve 23 to close and starts the pressure holding test on the workpiece. At this time, the vacuum pressure sensor 22 obtains the vacuum degree data in the sealed pipeline 21 and the workpiece in real time; when the host computer determines that the pressure holding time has been reached, it controls the fifth solenoid valve 24 to open to restore the atmospheric pressure in the sealed pipeline 21. At the same time, the host computer judges whether the pressure holding performance of the workpiece to be tested is qualified according to the vacuum degree data obtained by the vacuum pressure sensor 22, and sends the judgment result to the user.

[0125] Obviously, the above embodiments are only examples for expressing the technical solutions of the present invention more clearly, rather than limiting the embodiments of the present invention. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Without departing from the concept of the present invention, these all belong to the protection scope of the present invention. Therefore, the protection scope of this invention patent shall be subject to the appended claims.

Claims

1. A vacuum performance testing system, characterized in that, It includes a small vacuum performance testing device and also includes a main control device; Among them, the small vacuum performance testing device includes a sealed pipeline, a vacuum pressure sensor, a first solenoid valve, a second solenoid valve, a third solenoid valve, a first test joint and a load simulation device; The sealed pipeline includes four connection ports. The first connection port of the sealed pipeline is connected to the vacuum pressure sensor. The second connection port of the sealed pipeline is connected to one end of the first solenoid valve. The other end of the first solenoid valve is connected to the first test joint. The third connection port of the sealed pipeline is connected to one end of the second solenoid valve. The other end of the second solenoid valve is suspended. The fourth connection port of the sealed pipeline is connected to one end of the third solenoid valve. The other end of the third solenoid valve is suspended; The first test joint includes an output end and two detection access ends; self-sealing male joints are sleeved on both of the two detection access ends; the output end is connected to the first solenoid valve; The load simulation device is connected to the other end of the second solenoid valve; The vacuum pressure sensor is used to detect the vacuum degree in the sealed pipeline; The main control device is communicatively connected to the vacuum pressure sensor; The main control device is also communicatively connected to the control ends of the first solenoid valve, the second solenoid valve and the third solenoid valve respectively; The main control device is used to receive the vacuum degree data in the sealed pipeline obtained by the vacuum pressure sensor; The main control device is also used to control the opening or closing of the first solenoid valve, the second solenoid valve and the third solenoid valve.

2. The vacuum performance testing system according to claim 1, characterized in that, The main control device includes an identification module, a control module and a data processing module; Among them, the identification module is used to obtain the identification information of the vacuum pump to be tested; The data processing module is used to read a preset vacuum pump database, where the preset vacuum pump database includes at least one vacuum pump parameter information and preset vacuum pump test parameters matching the vacuum pump parameter information; The data processing module is also used to obtain the preset vacuum pump test parameters with the vacuum pump parameter information matching the identification information from the preset vacuum pump database; The control module is used to control the opening or closing of the first solenoid valve, the second solenoid valve and the third solenoid valve respectively according to the preset vacuum pump test parameters; The data processing module is also used to judge whether the vacuum pumping performance of the vacuum pump to be tested is qualified according to the vacuum degree data obtained by the vacuum pressure sensor and send the judgment result to the user.

3. The vacuum performance testing system according to claim 2, wherein, The main control device also includes a curve generation module and a history query module; The curve generation module is used to generate the vacuum performance curve of the vacuum pump to be tested according to the vacuum degree data obtained by the vacuum pressure sensor; The data processing module is also used to write the identification information of the vacuum pump to be tested and the vacuum performance curve into the history database; The history query module is used to obtain the matching vacuum performance curve from the history database according to the identification information obtained by the identification module; The data processing module is further configured to send the acquired vacuum performance curve to the user.

4. A vacuum performance testing system, characterized in that, It includes a small vacuum performance testing device and also includes a main control device; Wherein, the small vacuum performance testing device includes a sealed pipeline, a vacuum pressure sensor, a fourth solenoid valve, a fifth solenoid valve, a second test joint and a test workpiece joint; The sealed pipeline includes four connection ports. The first connection port of the sealed pipeline is connected to the vacuum pressure sensor. The second connection port of the sealed pipeline is connected to one end of the fourth solenoid valve. The other end of the fourth solenoid valve is connected to the second test joint. The third connection port of the sealed pipeline is connected to one end of the fifth solenoid valve. The other end of the fifth solenoid valve is suspended. The fourth connection port of the sealed pipeline is connected to one end of the test workpiece joint. The other end of the test workpiece joint is sleeved with a bellows. The other end of the bellows is sleeved with a self-sealing female joint; The vacuum pressure sensor is used to detect the vacuum degree in the sealed pipeline; The main control device is communicatively connected to the vacuum pressure sensor; The main control device is also respectively communicatively connected to the control ends of the fourth solenoid valve and the fifth solenoid valve; The main control device is used to receive the vacuum degree data in the sealed pipeline acquired by the vacuum pressure sensor; The main control device is further used to control the opening or closing of the fourth solenoid valve and the fifth solenoid valve.

5. The vacuum performance testing system according to claim 4, wherein, The main control device includes an identification module, a control module and a data processing module; Wherein, the identification module is used to acquire the identification information of the vacuum pump to be tested; The data processing module is used to read a preset vacuum pump database, wherein the preset vacuum pump database includes at least one vacuum pump parameter information and preset vacuum pump test parameters matched with the vacuum pump parameter information; The data processing module is further used to acquire the preset vacuum pump test parameters in which the vacuum pump parameter information matches the identification information from the preset vacuum pump database; The control module is used to control the opening or closing of the fourth solenoid valve and the fifth solenoid valve respectively according to the preset vacuum pump test parameters; The data processing module is further used to judge whether the vacuum pumping performance of the vacuum pump to be tested is qualified according to the vacuum degree data in the sealed pipeline acquired by the vacuum pressure sensor, and send the judgment result to the user.

6. The vacuum performance testing system according to claim 5, wherein The main control device further includes a curve generation module and a historical query module; The identification module is further used to acquire the identification information of the workpiece to be tested; The data processing module is further used to read a preset workpiece database, wherein the preset workpiece database includes at least one workpiece type information and preset workpiece test parameters matched with the workpiece type information; The control module is used to according to, the opening or closing of the fifth solenoid valve; The data processing module is further used to judge whether the pressure holding performance of the workpiece to be tested is qualified according to the vacuum degree data acquired by the vacuum pressure sensor, and send the judgment result to the user.

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