Vacuum pump condensate drainage system

Abstract

The invention belongs to the technical field of condensate drainage, and particularly discloses a vacuum pump condensate drainage system which comprises a control terminal, a vacuum buffer tank, a condensate collection tank, a waste liquid underground collection tank and a plurality of pump body assemblies, and each pump body assembly comprises a vacuum pump and a vacuum pump inlet separation tank; a first electromagnetic valve is arranged between the vacuum buffer tank and the condensate collecting tank, a second electromagnetic valve is arranged between the condensate collecting tank and the external pressurizer, and a third electromagnetic valve is arranged between the vacuum device and the condensate collecting tank; a fourth electromagnetic valve is arranged between the condensate collecting tank and the waste liquid underground collecting tank; a fifth electromagnetic valve is arranged at a second discharge hole end at the bottom of the vacuum pump inlet separating tank; the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve and the fifth electromagnetic valve are all connected with a control terminal. Automatic and timely condensate drainage is achieved, condensate drainage can also be achieved during operation of the vacuum pump, condensate drainage is thorough, and the situation that the vacuum pump is damaged due to the fact that condensate is too high is avoided.

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 exhaust the gas in a closed space by pumping air, thereby generating and maintaining a vacuum state in the 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 not easy to condense. These pollutants will enter the pump body along the airflow, but as the gas pressure decreases, these pollutants will gradually cool and condense on the cooling water channel inside the pump body, forming dirt, thereby reducing the efficiency of the pump body and even causing damage to the pump body. In order to prevent this from happening, the vacuum pump needs to be regularly discharged. At present, the condensation discharge of the vacuum pump is manually operated on site, and there is a situation where the condensate is not discharged in time on site, causing vacuum pump failure. Summary of the invention

[0003] The object 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 fails.

[0004] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a vacuum pump condensate discharge 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 at 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, and 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 at the top of the vacuum pump inlet separation tank is connected to the corresponding vacuum pump, and 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 waste liquid underground 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 arranged in the control terminal.

[0008] Furthermore, it also includes a waste liquid delivery pump, the waste liquid underground collection tank is connected to the inlet of the waste liquid delivery pump, the outlet of the waste liquid delivery pump is connected to the waste liquid storage tank, the waste liquid delivery pump is connected to the control terminal, and the front end and rear end of the waste liquid delivery 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 underground waste liquid 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 underground waste liquid collection tank and send 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; when 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 discharge time is a. After the 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 runs for the first time and perform running timing; when the running time of the vacuum pump that runs for the first time 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] Further, 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 the 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<a, 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] The beneficial effects of this technical solution are: automatic and timely condensate discharge is achieved, and condensate can be discharged even when the vacuum pump is running. The condensate discharge is thorough, and there will be no damage to the vacuum pump caused by excessive condensate. The operator only needs to inspect and pay attention, and does not contact the process condensate at all, eliminating safety risks and reducing labor intensity. There will be no equipment damage caused by condensate problems, saving the company annual maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a connection schematic 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 delivery 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 be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0020] The embodiment is basically as shown in the attached Figure 1 As shown: the vacuum pump condensate discharge system includes a control terminal, a vacuum buffer tank 1, a condensate collection tank 2, a waste liquid underground collection tank 5, a waste liquid delivery pump 6, a waste liquid storage tank and several groups of pump body components (three groups in this embodiment), each group of pump body components includes 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 several groups of pump body components, and the second discharge port 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, and the external pressurizer is used to fill nitrogen into the condensate collection tank 2 for pressurization. The first discharge port at the top of the vacuum pump inlet separation tank 3 is connected to the corresponding vacuum pump 4, and the second discharge ports at the bottom of multiple groups of vacuum pump inlet separation tanks 3 are connected to the condensate collection tank 2 after merging. 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 waste liquid underground collection tank 5 is connected to the inlet of the waste liquid delivery pump 6, and the outlet of the waste liquid delivery pump 6 is connected to the waste liquid storage tank. The condensate collection tank 2 is connected to a vacuum device, which is used to evacuate the condensate collection tank 2. The control terminal is connected to the waste liquid delivery pump 6, the external pressurizer, the vacuum pump 4 and the vacuum device.

[0021] A first solenoid valve 10 and a first manual valve 15 are provided between the vacuum buffer tank 1 and the condensate collection tank 2, a second solenoid valve 11 and a second manual valve 16 are provided between the condensate collection tank 2 and the external pressurizer, a third solenoid valve 12 and a third manual valve 17 are provided between the vacuum device and the condensate collection tank 2; a fourth solenoid valve 13 and a fourth manual valve 18 are provided between the condensate collection tank 2 and the waste liquid underground collection tank 5, and a fifth solenoid valve 14 and a fifth manual valve 19 are 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.

[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 delivery 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 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 the 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.

[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, it can be 1 hour), the control terminal will open the corresponding fifth solenoid valve 14, and the condensation discharge time is a (specifically, it can be 10 minutes). After the condensation discharge time is over, the control terminal will close 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 vacuum pump 4 that runs for the first time and perform running timing; after the running time of the vacuum pump 4 that runs for the first time reaches the discharge time of the vacuum buffer tank 1 set in the control terminal (specifically, it can be 2 hours), the control terminal opens the first solenoid valve 10, and the condensation discharge time is b (specifically, it can be 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 collecting tank 2 reaches c (specifically 50% of the internal height of the condensate collecting 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 collecting tank 2, and the condensate in the condensate collecting tank 2 is discharged to the underground waste liquid collection tank 5; when the liquid level in the condensate collecting tank 2 reaches d (specifically 5% of the internal height of the condensate collecting tank 2), d<a, 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, so that the pressure in the condensate collecting 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 delivery pump 6 to transport 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 delivery 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 manual valve 15, the second manual valve 16, the third manual valve 17, the fourth manual valve 18 and the fifth manual valve 19 are opened by default when the system is running. Manually open the first control valve 20, the fourth control valve 23, the fifth control valve 24 and the sixth control valve 25 as well as the third control valve 22 and the second control valve 21 corresponding to the vacuum pump 4 that needs to be operated. Before starting the vacuum pump 4 that has stopped, it is necessary to manually open the corresponding fifth solenoid valve 14 to discharge condensate, and close the fifth solenoid valve 14 after the condensate is discharged.

[0032] After the control terminal automatically starts the corresponding vacuum pump 4, the control terminal will record the start time of each group of vacuum pumps 4 and perform operation timing. After starting the vacuum pump 4, the control terminal will automatically open the third solenoid valve 12, close the second solenoid valve 11 and the fourth solenoid valve 13, start the vacuum device, and pump negative pressure into the condensate collection tank 2, and pump the pressure of the condensate collection tank 2 to be consistent with the pressure of the vacuum buffer tank 1.

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

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

[0035] When the liquid level of the condensate collection tank 2 reaches 50%, 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 to the waste liquid underground collection tank 5. When the liquid level of 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 pumps negative pressure to the condensate collection tank 2, and pumps the pressure of the condensate collection tank 2 to be consistent with the pressure of 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 article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant 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 deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope 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 collection tank (2), an underground waste liquid collection tank (5) and a plurality of groups of pump body components, each group of the pump body components comprises a vacuum pump (4) and a vacuum pump inlet separation tank (3), the feed inlet 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 inlets of the vacuum pump inlet separation tanks (3) of the plurality of groups of pump body components, the second discharge port at the bottom of the vacuum buffer tank (1) is connected to the condensate collection tank (2); the condensate collection tank (4) is connected to the waste liquid underground collection tank (5 ... The tank (2) is connected to an external pressurizer; the first discharge port at the top of the vacuum pump inlet separation tank (3) is connected to the corresponding vacuum pump (4), and the second discharge port at 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 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 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) arranged in the control terminal.

2. The vacuum pump condensate removal system according to claim 1, characterized in that: It also includes a waste liquid delivery pump (6), 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 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, and 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 at the bottom of the vacuum pump inlet separation tank (3).

5. The vacuum pump condensate removal system according to claim 1, characterized in that: The control terminal will record the start time of each group of the 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 the vacuum pumps (4) reaches the discharge time of the vacuum pump (4) set in the control terminal, the control terminal will open the corresponding fifth solenoid valve (14), and the discharge time is a. After the discharge time is over, the control terminal will close 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.

6. The vacuum pump condensate removal system according to claim 1, characterized in that: The control terminal will record the start time of the vacuum pump (4) that runs first and perform running timing; after the running time of the vacuum pump (4) that runs first 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 will restart the timing and perform running timing according to the restarted timing time.

7. The vacuum pump condensate removal system according to claim 1, characterized in that: When the liquid level in the condensate collection 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 collection tank (2), and the condensate in the condensate collection tank (2) is discharged to the underground waste liquid collection tank (5); when the liquid level in the condensate collection tank (2) reaches d, d<a, the control terminal closes the second solenoid valve (11) and the fourth solenoid valve (13), opens the third solenoid valve (12), and draws negative pressure to the condensate collection tank (2).

8. 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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