Vacuum pump condensate removal system

Abstract

The present invention belongs to the field of condensate removal technology and specifically discloses a vacuum pump condensate removal system, comprising a control terminal, a vacuum buffer tank, a condensate collection tank, an underground waste liquid collection tank, and several pump body assemblies, each pump body assembly comprising a vacuum pump and a vacuum pump inlet separator tank; a first solenoid valve is provided between the vacuum buffer tank and the condensate collection tank, a second solenoid valve is provided between the condensate collection tank and an external pressurizer, and a third solenoid valve is provided between the vacuum device and the condensate collection tank; a fourth solenoid valve is provided between the condensate collection tank and the underground waste liquid collection tank, and a fifth solenoid valve is provided at the second discharge port end of the bottom of the vacuum pump inlet separator tank; the first, second, third, fourth, and fifth solenoid valves are all connected to the control terminal. This system automatically and promptly removes condensate, allowing for thorough condensate removal even when the vacuum pump is operating, preventing damage to the vacuum pump caused by excessive condensate.

Description

Technical Field

[0001] The invention belongs to the technical field of condensate removal, and in particular relates to a condensate removal system for a vacuum pump. Background Art

[0002] The main function of a vacuum pump is to expel gas from a closed space by pumping air, thereby creating and maintaining a vacuum state within that space. Vacuum pumps are widely used in industries such as metallurgy, chemical industry, food, and electronic coating. When the vacuum pump is running, the inhaled gas may contain gaseous pollutants such as water vapor that are difficult to condense. These pollutants will enter the pump body along the airflow. However, as the gas pressure decreases, these pollutants will gradually cool and condense on the cooling water channels inside the pump body, forming dirt, thereby reducing the efficiency of the pump body and even causing damage to the pump body. To prevent this from happening, the vacuum pump needs to be regularly drained. Currently, the condensate discharge of vacuum pumps is manually performed on-site, and there is a possibility that the condensate is not discharged in a timely manner, causing vacuum pump failure. Summary of the Invention

[0003] The purpose of the present invention is to provide a vacuum pump condensate discharge system to solve the problem that the current vacuum pump condensate discharge is manually operated on site, the condensate is not discharged in time on site, and the vacuum pump malfunctions are caused.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a vacuum pump condensate removal system, comprising a control terminal, a vacuum buffer tank, a condensate collection tank, a waste liquid underground collection tank and several groups of pump body components, each group of the pump body components comprising a vacuum pump and a vacuum pump inlet separation tank, the feed port of the vacuum buffer tank is connected to the tail gas system, the first discharge port on the top of the vacuum buffer tank is respectively connected to the feed ports of the vacuum pump inlet separation tanks of several groups of pump body components, the second discharge port at the bottom of the vacuum buffer tank is connected to the condensate collection tank; the condensate collection tank is connected to an external pressurizer; the first discharge port on the top of the vacuum pump inlet separation tank is connected to the corresponding vacuum pump, the second discharge port at the bottom of the vacuum pump inlet separation tank is connected to the condensate collection tank; the discharge port of the vacuum pump is connected to the tail gas absorption system; the discharge port of the condensate collection tank is connected to the feed port of the waste liquid underground collection tank; the condensate collection tank is connected to a vacuum device; the control terminal is connected to the external pressurizer, vacuum pump and vacuum device;

[0005] A first solenoid valve is provided between the vacuum buffer tank and the condensate collection tank, a second solenoid valve is provided between the condensate collection tank and the external pressurizer, and a third solenoid valve is provided between the vacuum device and the condensate collection tank; a fourth solenoid valve is provided between the condensate collection tank and the underground waste liquid collection tank, and a fifth solenoid valve is provided at the second discharge port end at the bottom of the vacuum pump inlet separation tank; the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve and the fifth solenoid valve are all connected to the control terminal;

[0006] A first control valve is provided at the front end of the vacuum device, a second control valve is provided at the front end of the feed port of the vacuum pump inlet separation tank, and a third control valve is provided between the discharge port of the vacuum pump and the tail gas absorption system; a pressure gauge is provided between the front end of the vacuum device and the first control valve; a fourth control valve is provided between the vacuum pump inlet separation tank and the condensate collection tank;

[0007] A first liquid level gauge is connected to the condensate collection tank, and the first liquid level gauge is connected to the control terminal. The first liquid level gauge is used to detect the liquid level in the condensate collection tank and send first liquid level information to the control terminal. The control terminal automatically opens and closes the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve and the fifth solenoid valve according to the first liquid level information and the discharge time of the vacuum pump and the vacuum buffer tank set in the control terminal.

[0008] Furthermore, it also includes a waste liquid transfer pump, the waste liquid underground collection tank is connected to the inlet of the waste liquid transfer pump, the outlet of the waste liquid transfer pump is connected to the waste liquid storage tank, the waste liquid transfer pump is connected to the control terminal, and the front end and rear end of the waste liquid transfer pump are respectively provided with a fifth control valve and a sixth control valve.

[0009] Furthermore, a second liquid level gauge is connected to the waste liquid underground collection tank, and the second liquid level gauge is connected to the control terminal. The second liquid level gauge is used to detect the liquid level in the waste liquid underground collection tank and send the second liquid level information to the control terminal. The control terminal automatically starts and closes the waste liquid transfer pump according to the second liquid level information.

[0010] Furthermore, a first manual valve is provided between the vacuum buffer tank and the condensate collection tank, a second manual valve is provided between the condensate collection tank and the external pressurizer, and a third manual valve is provided between the vacuum device and the condensate collection tank; a fourth manual valve is provided between the condensate collection tank and the underground waste liquid collection tank, and a fifth manual valve is provided at the second discharge port end at the bottom of the vacuum pump inlet separation tank.

[0011] Furthermore, the control terminal will record the start time of each group of the vacuum pumps and perform running timing; after the vacuum pump is started, the control terminal will open the third solenoid valve and close the second solenoid valve and the fourth solenoid valve; after the running time of one group of the vacuum pumps reaches the discharge time of the vacuum pump set in the control terminal, the control terminal will open the corresponding fifth solenoid valve, and the condensation discharge time is a. After the condensation discharge time is over, the control terminal will close the corresponding fifth solenoid valve, and then the control terminal will re-record the start time of the vacuum pump and perform running timing again.

[0012] Furthermore, the control terminal will record the start time of the vacuum pump that was first run and perform running timing; after the running time of the vacuum pump that was first run reaches the discharge time of the vacuum buffer tank set in the control terminal, the control terminal opens the first solenoid valve, and the condensation discharge time is b. After the condensation discharge time is over, the control terminal closes the first solenoid valve; then the control terminal will restart the timing and perform running timing according to the restarted timing time.

[0013] Furthermore, when the liquid level in the condensate collection tank reaches c, the control terminal closes the first solenoid valve, the third solenoid valve and all fifth solenoid valves, opens the second solenoid valve and the fourth solenoid valve, and the external pressurizer pressurizes the condensate collection tank, and the condensate in the condensate collection tank is discharged into the underground waste liquid collection tank; when the liquid level in the condensate collection tank reaches d, d<c, the control terminal closes the second solenoid valve and the fourth solenoid valve, opens the third solenoid valve, and pumps negative pressure into the condensate collection tank.

[0014] Furthermore, when the liquid level in the waste liquid underground collection tank reaches e, the control terminal starts the waste liquid transfer pump to transfer the condensate in the waste liquid underground collection tank to the waste liquid storage tank; when the liquid level in the condensate collection tank reaches f, f<e, the control terminal turns off the waste liquid transfer pump.

[0015] This technical solution offers the benefits of automatic and timely condensate removal, even while the vacuum pump is running. This thorough condensate removal prevents damage to the vacuum pump caused by excessive condensate. Operators only need to conduct inspections and monitor the process without any contact with process condensate, eliminating safety risks and reducing labor intensity. This eliminates equipment damage caused by condensate, saving the company annual maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a connection diagram of the vacuum pump condensate removal system of the present invention. DETAILED DESCRIPTION

[0017] The following is further described in detail through specific implementation methods:

[0018] The figure marks in the drawings of the specification include: vacuum buffer tank 1, condensate collection tank 2, vacuum pump inlet separation tank 3, vacuum pump 4, waste liquid underground collection tank 5, waste liquid transfer pump 6, pressure gauge 7, first liquid level gauge 8, second liquid level gauge 9, first solenoid valve 10, second solenoid valve 11, third solenoid valve 12, fourth solenoid valve 13, fifth solenoid valve 14, first manual valve 15, second manual valve 16, third manual valve 17, fourth manual valve 18, fifth manual valve 19, first control valve 20, second control valve 21, third control valve 22, fourth control valve 23, fifth control valve 24, sixth control valve 25.

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] The embodiment is basically as shown in the attached Figure 1 The vacuum pump condensate removal system shown in FIG. 1 includes a control terminal, a vacuum buffer tank 1, a condensate collection tank 2, an underground waste liquid collection tank 5, a waste liquid transfer pump 6, a waste liquid storage tank, and several sets of pump body assemblies (three sets in this embodiment). Each pump body assembly includes a vacuum pump 4 and a vacuum pump inlet separator tank 3. The inlet of the vacuum buffer tank 1 is connected to the exhaust system. The first outlet at the top of the vacuum buffer tank 1 is connected to the inlet of the vacuum pump inlet separator tanks 3 of the several pump body assemblies. The second outlet at the bottom of the vacuum buffer tank 1 is connected to the condensate collection tank 2. The condensate collection tank 2 is connected to an external pressurizer for pressurizing the condensate collection tank 2 by filling it with nitrogen. The first outlet at the top of the vacuum pump inlet separator tank 3 is connected to the corresponding vacuum pump 4. The second outlets at the bottom of the multiple vacuum pump inlet separator tanks 3 converge and are connected to the condensate collection tank 2. The outlet of the vacuum pump 4 is connected to the exhaust gas absorption system. The discharge port of condensate collection tank 2 is connected to the feed port of underground waste liquid collection tank 5, which is in turn connected to the inlet of a waste liquid transfer pump 6, whose outlet is connected to the waste liquid storage tank. Condensate collection tank 2 is connected to a vacuum pump, which is used to evacuate the air inside condensate collection tank 2. The control terminal is connected to the waste liquid transfer pump 6, the external pressurizer, the vacuum pump 4, and the vacuum pump.

[0021] A first solenoid valve 10 and a first manual valve 15 are installed between the vacuum buffer tank 1 and the condensate collection tank 2. A second solenoid valve 11 and a second manual valve 16 are installed between the condensate collection tank 2 and the external pressurizer. A third solenoid valve 12 and a third manual valve 17 are installed between the vacuum device and the condensate collection tank 2. A fourth solenoid valve 13 and a fourth manual valve 18 are installed between the condensate collection tank 2 and the underground waste liquid collection tank 5. A fifth solenoid valve 14 and a fifth manual valve 19 are installed at the second discharge port at the bottom of the vacuum pump inlet separation tank 3. The first solenoid valve 10, the second solenoid valve 11, the third solenoid valve 12, the fourth solenoid valve 13, and the fifth solenoid valve 14 are all connected to the control terminal.

[0022] A first control valve 20 is provided at the front end of the vacuum device, a second control valve 21 is provided at the front end of the feed port of the vacuum pump inlet separation tank 3, and a third control valve 22 is provided between the discharge port of the vacuum pump 4 and the tail gas absorption system; a pressure gauge 7 is provided between the front end of the vacuum device and the first control valve 20; a fourth control valve 23 is provided between the vacuum pump inlet separation tank 3 and the condensate collection tank 2; a fifth control valve 24 and a sixth control valve 25 are provided at the front end and rear end of the waste liquid transfer pump 6 respectively.

[0023] A first liquid level gauge 8 is connected to the condensate collection tank 2, and the first liquid level gauge 8 is connected to the control terminal. The first liquid level gauge 8 is used to detect the liquid level in the condensate collection tank 2 and send the first liquid level information to the control terminal. The control terminal automatically opens and closes the first solenoid valve 10, the second solenoid valve 11, the third solenoid valve 12, the fourth solenoid valve 13 and the fifth solenoid valve 14 according to the first liquid level information and the discharge time of the vacuum pump 4 and the vacuum buffer tank 1 set in the control terminal.

[0024] A second liquid level gauge 9 is connected to the waste liquid underground collection tank 5, and the second liquid level gauge 9 is connected to the control terminal. The second liquid level gauge 9 is used to detect the liquid level in the waste liquid underground collection tank 5 and send the second liquid level information to the control terminal. The control terminal automatically starts and closes the waste liquid transfer pump 6 according to the second liquid level information.

[0025] The control terminal will record the start time of each group of vacuum pumps 4 and perform running timing; after the vacuum pump 4 is started, the control terminal will open the third solenoid valve 12 and close the second solenoid valve 11 and the fourth solenoid valve 13; after the running time of one group of vacuum pumps 4 reaches the discharge time of the vacuum pump 4 set in the control terminal (specifically 1 hour), the control terminal opens the corresponding fifth solenoid valve 14, and the condensation discharge time is a (specifically 10 minutes). After the condensation discharge time is over, the control terminal closes the corresponding fifth solenoid valve 14, and then the control terminal will re-record the start time of the vacuum pump 4 and perform running timing again.

[0026] The control terminal will record the start time of the first running vacuum pump 4 and perform running timing; after the running time of the first running vacuum pump 4 reaches the discharge time of the vacuum buffer tank 1 set in the control terminal (specifically 2 hours), the control terminal opens the first solenoid valve 10, and the condensation discharge time is b (specifically 10 minutes). After the condensation discharge time is over, the control terminal closes the first solenoid valve 10; then the control terminal will restart the timing and perform running timing according to the restarted timing time.

[0027] When the liquid level in the condensate collection tank 2 reaches c (specifically 50% of the internal height of the condensate collection tank 2), the control terminal closes the first solenoid valve 10, the third solenoid valve 12 and all the fifth solenoid valves 14, opens the second solenoid valve 11 and the fourth solenoid valve 13, and the external pressurizer pressurizes the condensate collection tank 2, and the condensate in the condensate collection tank 2 is discharged into the waste liquid underground collection tank 5; when the liquid level in the condensate collection tank 2 reaches d (specifically 5% of the internal height of the condensate collection tank 2), d<c, the control terminal closes the second solenoid valve 11 and the fourth solenoid valve 13, opens the third solenoid valve 12, and pumps negative pressure into the condensate collection tank 2, so that the pressure in the condensate collection tank 2 is consistent with the pressure in the vacuum buffer tank 1.

[0028] When the liquid level in the waste liquid underground collection tank 5 reaches e (specifically 80% of the internal height of the waste liquid underground collection tank 5), the control terminal starts the waste liquid transfer pump 6 to transfer the condensate in the waste liquid underground collection tank 5 to the waste liquid storage tank; when the liquid level in the condensate collection tank 2 reaches f (specifically 5% of the internal height of the waste liquid underground collection tank 5), f<e, the control terminal turns off the waste liquid transfer pump 6.

[0029] The specific implementation process is as follows:

[0030] The tail gas from the tail gas system enters the vacuum buffer tank 1 for gas-liquid separation, the liquid phase is stored at the bottom of the vacuum buffer tank 1, and the gas phase is discharged from the top of the vacuum buffer tank 1 into the vacuum pump inlet separation tank 3, where the gas-liquid separation is performed again. The process gas phase passes through the vacuum pump 4 and is transported to the tail gas absorption system for absorption.

[0031] The first, second, third, fourth, and fifth manual valves 15, 16, 17, 18, and 19 are open by default when the system is running. Manually open the first, fourth, fifth, and sixth control valves 20, 23, 24, and 25, as well as the third and second control valves 22, 21 corresponding to the vacuum pumps 4 that need to be running. Before restarting a stopped vacuum pump 4, manually open the corresponding fifth solenoid valve 14 to drain condensate. After draining condensate, close the fifth solenoid valve 14.

[0032] After the control terminal automatically starts the corresponding vacuum pump 4, it records the start-up time of each set of vacuum pumps 4 and counts the running time. After starting the vacuum pump 4, the control terminal automatically opens the third solenoid valve 12 and closes the second solenoid valve 11 and the fourth solenoid valve 13, activating the vacuum device to draw negative pressure into the condensate collection tank 2 until the pressure in the condensate collection tank 2 is consistent with the pressure in the vacuum buffer tank 1.

[0033] The running vacuum pump 4 discharges condensate once every hour, and the timing is from the start of the vacuum pump 4. Each discharge lasts for 10 minutes, and after 10 minutes, the fifth solenoid valve 14 corresponding to the vacuum pump inlet separation tank 3 is closed. Then the timing is restarted to discharge the condensate in this cycle.

[0034] The vacuum buffer tank 1 discharges condensate once every 2 hours, and the timing starts from the vacuum pump 4 that starts to run. Each discharge lasts for 10 minutes. After 10 minutes, the first electromagnetic valve 10 is closed and the timing is restarted to discharge the condensate in this cycle.

[0035] When the liquid level in the condensate collection tank 2 reaches 50%, the control terminal closes the first solenoid valve 10, the third solenoid valve 12, and all fifth solenoid valves 14, opens the second solenoid valve 11 and the fourth solenoid valve 13, and the external pressurizer pressurizes the condensate collection tank 2, and the condensate in the condensate collection tank 2 is discharged into the underground waste liquid collection tank 5. When the liquid level in the condensate collection tank 2 reaches 5%, the control terminal closes the second solenoid valve 11 and the fourth solenoid valve 13, opens the third solenoid valve 12, and applies negative pressure to the condensate collection tank 2, pumping the pressure of the condensate collection tank 2 to the same level as the pressure in the vacuum buffer tank 1.

[0036] When the liquid level in the waste liquid underground collection tank 5 reaches 80%, the control terminal automatically starts the waste liquid delivery pump 6 to deliver the condensate to the waste liquid storage tank. When the liquid level reaches 5%, the control terminal shuts down the waste liquid delivery pump 6.

[0037] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0038] The above is only an embodiment of the present invention. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. Ordinary technicians in the field are aware of all common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the field can improve and implement this scheme in combination with their own abilities under the inspiration given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. Vacuum pump condensate removal system, characterized by: The invention comprises a control terminal, a vacuum buffer tank (1), a condensate collecting tank (2), an underground waste liquid collecting tank (5) and a plurality of groups of pump body assemblies, wherein each group of the pump body assemblies comprises a vacuum pump (4) and a vacuum pump inlet separation tank (3), the feed port of the vacuum buffer tank (1) is connected to the tail gas system, the first discharge port at the top of the vacuum buffer tank (1) is respectively connected to the feed ports of the vacuum pump inlet separation tanks (3) of the plurality of groups of pump body assemblies, and the second discharge port at the bottom of the vacuum buffer tank (1) is connected to the condensate collecting tank (2); the condensate collecting tank (4) is connected to the waste liquid collecting tank (3); The tank (2) is connected to an external pressurizer; the first discharge port on the top of the vacuum pump inlet separation tank (3) is connected to the corresponding vacuum pump (4), and the second discharge port on the bottom of the vacuum pump inlet separation tank (3) is connected to the condensate collection tank (2); the discharge port of the vacuum pump (4) is connected to the tail gas absorption system; the discharge port of the condensate collection tank (2) is connected to the feed port of the waste liquid underground collection tank (5); the condensate collection tank (2) is connected to a vacuum device; the control terminal is connected to the external pressurizer, the vacuum pump (4) and the vacuum device; A first solenoid valve (10) is provided between the vacuum buffer tank (1) and the condensate collection tank (2), a second solenoid valve (11) is provided between the condensate collection tank (2) and the external pressurizer, and a third solenoid valve (12) is provided between the vacuum device and the condensate collection tank (2); a fourth solenoid valve (13) is provided between the condensate collection tank (2) and the waste liquid underground collection tank (5), and a fifth solenoid valve (14) is provided at the second discharge port end at the bottom of the vacuum pump inlet separation tank (3); the first solenoid valve (10), the second solenoid valve (11), the third solenoid valve (12), the fourth solenoid valve (13) and the fifth solenoid valve (14) are all connected to the control terminal; A first control valve (20) is provided at the front end of the vacuum device, a second control valve (21) is provided at the front end of the feed port of the vacuum pump inlet separation tank (3), and a third control valve (22) is provided between the discharge port of the vacuum pump (4) and the tail gas absorption system; a pressure gauge (7) is provided between the front end of the vacuum device and the first control valve (20); and a fourth control valve (23) is provided between the vacuum pump inlet separation tank (3) and the condensate collection tank (2); A first liquid level gauge (8) is connected to the condensate collecting tank (2), and the first liquid level gauge (8) is connected to the control terminal. The first liquid level gauge (8) is used to detect the liquid level in the condensate collecting tank (2) and send first liquid level information to the control terminal. The control terminal automatically opens and closes the first solenoid valve (10), the second solenoid valve (11), the third solenoid valve (12), the fourth solenoid valve (13), and the fifth solenoid valve (14) according to the first liquid level information and the discharge time of the vacuum pump (4) and the vacuum buffer tank (1) provided in the control terminal. The control terminal records the start time of each group of the vacuum pumps (4) and performs operation timing; after the vacuum pumps (4) are started, the control terminal opens the third solenoid valve (12) and closes the second solenoid valve (11) and the fourth solenoid valve (13); after the operation time of one group of the vacuum pumps (4) reaches the discharge time of the vacuum pump (4) set in the control terminal, the control terminal opens the corresponding fifth solenoid valve (14), and the discharge time is a. After the discharge time is over, the control terminal closes the corresponding fifth solenoid valve (14), and then the control terminal re-records the start time of the vacuum pump (4) and performs operation timing again; The control terminal records the start time of the vacuum pump (4) that is first run and performs running timing; after the running time of the vacuum pump (4) that is first run reaches the discharge time of the vacuum buffer tank (1) set in the control terminal, the control terminal opens the first solenoid valve (10), and the condensation discharge time is b. After the condensation discharge time is over, the control terminal closes the first solenoid valve (10); then the control terminal restarts the timing and performs running timing according to the restarted timing time; When the liquid level in the condensate collecting tank (2) reaches c, the control terminal closes the first solenoid valve (10), the third solenoid valve (12) and all the fifth solenoid valves (14), opens the second solenoid valve (11) and the fourth solenoid valve (13), and the external pressurizer pressurizes the condensate collecting tank (2), and the condensate in the condensate collecting tank (2) is discharged to the waste liquid underground collection tank (5); when the liquid level in the condensate collecting tank (2) reaches d, d<c, the control terminal closes the second solenoid valve (11) and the fourth solenoid valve (13), opens the third solenoid valve (12), and pumps negative pressure into the condensate collecting tank (2).

2. The vacuum pump condensate removal system according to claim 1, characterized in that: The invention also includes a waste liquid delivery pump (6), wherein the waste liquid underground collection tank (5) is connected to the inlet of the waste liquid delivery pump (6), the outlet of the waste liquid delivery pump (6) is connected to the waste liquid storage tank, the waste liquid delivery pump (6) is connected to the control terminal, and the front end and the rear end of the waste liquid delivery pump (6) are respectively provided with a fifth control valve (24) and a sixth control valve (25).

3. The vacuum pump condensate removal system according to claim 2, characterized in that: A second liquid level meter (9) is connected to the waste liquid underground collection tank (5), and the second liquid level meter (9) is connected to the control terminal. The second liquid level meter (9) is used to detect the liquid level in the waste liquid underground collection tank (5) and send second liquid level information to the control terminal. The control terminal automatically starts and closes the waste liquid delivery pump (6) according to the second liquid level information.

4. The vacuum pump condensate removal system according to claim 1, characterized in that: A first manual valve (15) is provided between the vacuum buffer tank (1) and the condensate collection tank (2); a second manual valve (16) is provided between the condensate collection tank (2) and the external pressurizer; a third manual valve (17) is provided between the vacuum device and the condensate collection tank (2); a fourth manual valve (18) is provided between the condensate collection tank (2) and the waste liquid underground collection tank (5); and a fifth manual valve (19) is provided at the second discharge port end of the bottom of the vacuum pump inlet separation tank (3).

5. The vacuum pump condensate removal system according to claim 3, characterized in that: When the liquid level in the waste liquid underground collection tank (5) reaches e, the control terminal starts the waste liquid delivery pump (6) to deliver the condensate in the waste liquid underground collection tank (5) to the waste liquid storage tank; when the liquid level in the condensate collection tank (2) reaches f, f<e, the control terminal shuts down the waste liquid delivery pump (6).

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