CN114570069A - Full-automatic control system for impurity and water removal of oil liquid by vacuum pump and use method thereof - Google Patents

Abstract

The invention belongs to the technical field of energy conservation and environmental protection, and relates to a full-automatic control system for impurity and water removal of oil liquid of a vacuum pump and a use method thereof. The system comprises a vacuum pump, an oil liquid cold discharge system and an oil filtering module, wherein the vacuum pump, the oil liquid cold discharge system and the oil filtering module are sequentially connected, the oil filtering module is used for purifying oil liquid, an oil outlet and a water outlet are formed in the oil filtering module, the purified oil liquid enters the vacuum pump from the oil outlet through an oil return pipeline to form circulation, and filtered impurities and water vapor flow to the water storage device from the water outlet. By adding the design of the oil liquid cold discharge system and the oil filtering module, pollutants and moisture pumped in the air pumping process can be effectively removed, so that the oil quality of the vacuum pump can meet the standard of new oil, the long-term stable operation of the vacuum pump is guaranteed, the oil change period is greatly prolonged, and the equipment abrasion and the operation cost of the system are reduced; and fully exerts the advantages of small volume, high efficiency, modularization, automatic temperature control and high vacuum degree of the rotary-vane vacuum pump system.

Description

An automatic control system for removing impurities and water in vacuum pump oil and using method thereof

technical field

The invention belongs to the technical field of energy saving and environmental protection, and relates to oil impurity removal, water removal, and oil purification and reuse of small oil systems, in particular to a vacuum pump oil impurity removal and water removal automatic control system and a use method thereof.

Background technique

With the continuous development of various industries such as industry, environmental protection, machinery and electricity, the application of vacuum pumps is becoming more and more extensive. Common types of vacuum pumps include water ring vacuum pump, jet vacuum pump and rotary vane vacuum pump, etc., which all have shortcomings in the actual production process. The common water ring vacuum pump system has no requirement for the water content of the pumped gas, but the system is complex and requires a special water tank and water replenishment and cooling system. It is subject to the evaporation temperature of water under high vacuum. Limited. As far as the jet vacuum pump system is concerned, it also requires a special water tank power pump. When the vacuum degree is high, the efficiency is low, and the vacuum that can be achieved is limited by the evaporation temperature of water under high vacuum.

The common rotary vane vacuum pump can be divided into primary and secondary vacuum pumps. The lubrication and sealing are completed by vacuum oil, which avoids the disadvantages of water ring vacuum pump and water jet vacuum pump to a certain extent; however, because the vacuum pump oil is not very good at present It requires frequent oil changes and maintenance, and the applicable working conditions are more finicky; and because it is required that the gas pumped cannot contain water vapor during its operation, and the gas ballast valve itself has a limited effect, it can only deal with tiny moisture. The problem cannot be completely solved.

In view of this, the present invention is proposed to solve the above-mentioned problems in the prior art.

SUMMARY OF THE INVENTION

The invention provides an automatic control system for removing impurities and water in vacuum pump oil, and a method for using the same.

The automatic control system for removing impurities and water from oil in a vacuum pump includes a vacuum pump, an oil cooling system and an oil filter module for purifying the oil, which are connected in sequence. The vacuum pump, the oil cooling system, the filter The oil modules are all connected to the controller; the oil filter module is provided with an oil outlet and a water outlet, and the purified oil enters the vacuum pump from the oil outlet through the oil return pipeline to form a circulation, and the filtered impurities and water vapor are removed from the The water outlet flows to the water storage device.

Further, the water outlet is connected with a water outlet pipeline, an electromagnetic valve is installed on the water outlet pipeline, and the electromagnetic valve is connected with the controller.

Further, the oil cooling system includes a cooling device and a temperature sensor for detecting the temperature of the oil, and both the temperature sensor and the cooling device are connected to the controller.

Further, the oil filter module integrates a pre-coarse filter module, a temperature sensor, an oil filter pump, an impurity-removing coalescing filter and a separation filter element module;

The pre-coarse filter module and the temperature sensor are all installed in the first box body, a second box body is arranged above the first box body, and the oil filter pump, the impurity removal coalescing filter and the separation filter element module are all Installed in the second box;

The pre-coarse filter module is connected with the oil filter pump, the oil inlet end of the oil filter pump is installed with a temperature sensor, the oil filter pump is connected with the impurity-removing coalescing filter, and the impurity-removing coalescing filter is connected with the separation filter element Module connection.

Further, the front panel of the first box body is provided with a first oil passage inlet, the oil enters the pre-coarse filter module through the first oil passage inlet, and the oil in the pre-coarse filter module flows from the The inlet of the second oil circuit enters the oil filter pump, and the oil in the oil filter pump flows from the outlet of the second oil circuit through the inlet of the third oil circuit into the impurity-removing coalescing filter, and the oil in the impurity-removing coalescing filter The oil flows out from the outlet of the third oil passage and enters the separation filter element module through the inlet of the fourth oil passage, and the oil in the separation filter element module flows back to the vacuum pump through the outlet of the fourth oil passage.

Further, the temperature sensor is installed at the inlet of the second oil passage of the oil filter pump.

Further, a first pressure sensor is installed at the oil inlet end of the oil filter pump, and a second pressure sensor is installed at the oil outlet end.

Further, the upper left corner of the side plate of the first box body is provided with a temperature sensor access port, and the temperature sensor is installed at the temperature sensor access port for detecting the oil temperature of the oil inlet end of the oil filter pump;

The side plate of the second box body is provided with a second pressure sensor access port, and the second pressure sensor is installed at the access port of the second pressure sensor for detecting the pressure of the oil outlet of the oil filter pump;

The top plate of the second box body is provided with a first pressure sensor access port, an impurity removal coalescing filter installation port, and a separation filter element module installation port in turn from left to right; the first pressure sensor is installed in the first pressure sensor connection. At the inlet, it is used to detect the pressure of the oil inlet end of the oil filter pump, and the first pressure sensor is located in front of or behind the temperature sensor;

A processing port is reserved on the front panel of the second box body.

Further, the top plate of the second box body is also provided with an exhaust valve access port, the exhaust valve access port is located above the oil filter pump, the exhaust valve access port is installed with an exhaust valve, and the exhaust valve access port is provided with an exhaust valve. Connect with the controller.

In addition, the present invention also provides a method of using the automatic control system for removing impurities and water in vacuum pump oil.

1) After the system is powered on, the vacuum pump runs and the oil filter pump starts to run. The vacuum pump oil passes through the pipeline through the cold exhaust temperature control system and the oil filter module in turn, and then returns to the vacuum pump through the pipeline. The water filtered by the system enters through the water outlet. water storage device;

2) After the system runs for a period of time, the oil temperature at the inlet of the second oil passage of the oil filter pump gradually increases. When the oil temperature at the inlet of the second oil passage of the oil filter pump is higher than the set oil temperature, the controller starts the oil cooling system to work. Until the oil temperature drops to the set oil temperature; wherein, the oil flow direction is as follows: the first oil circuit inlet → pre-coarse filter module → the second oil circuit inlet → oil filter pump → the second oil circuit outlet → the third oil circuit Inlet → impurity removal coalescing filter → outlet of the third oil circuit → inlet of the fourth oil circuit → separation filter element module → outlet of the fourth oil circuit → vacuum pump.

Compared with the prior art, the technical solution provided by the present invention includes the following beneficial effects: on the one hand, by increasing the design of the oil cooling system and the oil filter module, the pollutants and water extracted during the air extraction process can be effectively removed. To ensure that the oil quality of the vacuum pump reaches the standard of new oil, it provides guarantee for the long-term stable operation of the vacuum pump, greatly prolongs the oil change period, and reduces equipment wear and system operating costs.

On the other hand, pre-filtering through the pre-coarse filter module prolongs the service time of the impurity removal and water removal accessories of the whole system, which is more durable in equipment maintenance and performance, and greatly saves equipment maintenance costs. The oil liquid cold discharge system formed by the temperature sensor and the cooling device monitors the oil temperature in real time and when the oil temperature is higher than the set oil temperature, the controller starts the oil liquid cold discharge system to work until the oil temperature drops below the set oil temperature. It avoids the influence of the high oil temperature and the environmental temperature on the operation efficiency of the equipment caused by the equipment of the existing system during operation.

Therefore, the application of the whole system expands the application range of the rotary vane vacuum pump system, and can give full play to the characteristics of the rotary vane vacuum pump with small size and high efficiency. , the system is easy to operate, the labor cost is reduced, and the automatic control is realized, which has a good application prospect and market value.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. In other words, on the premise of no creative labor, other drawings can also be obtained from these drawings.

Fig. 1 is the principle block diagram of a kind of vacuum pump oil liquid impurity and water removal automatic control system provided by the present invention;

Fig. 2 is the integrated schematic diagram of the oil filter module provided by the present invention;

FIG. 3 is a schematic structural diagram of an oil filter module provided by the present invention.

Among them: 1. Vacuum pump; 2. Oil cooling system; 3. Oil filter module; 4. Solenoid valve; 5. Water storage device; 6. Pre-coarse filter module; 7. Oil filter pump; Knot filter; 9. Separation filter element module; 10. First oil circuit inlet; 11. Temperature sensor inlet; 12. Second oil circuit inlet; 13. First pressure sensor inlet; 14. Second pressure sensor inlet ; 15, the second oil circuit outlet; 16, the third oil circuit inlet; 17, the third oil circuit outlet; 18, the fourth oil circuit outlet; 19, the fourth oil circuit inlet; 20, the processing port.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, the same numerals in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with the present invention. Rather, they are merely examples of systems and methods consistent with some aspects of the invention as recited in the appended claims.

In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

Example

Referring to Figure 1, the present invention provides an automatic control system for removing impurities and water in a vacuum pump oil, including a vacuum pump 1, an oil cooling system 2, and an oil filter module for purifying the oil, which are connected in sequence. 3. The vacuum pump 1, the oil cooling system 2, and the oil filter module 3 are all connected to the controller; the oil filter module 3 is provided with an oil outlet and a water outlet, and the purified oil flows from the oil outlet It enters the vacuum pump 1 through the oil return pipeline to form a circulation, and the filtered impurities and water vapor flow from the water outlet to the water storage device 5 .

Further, the water outlet is connected with a water outlet pipeline, and a solenoid valve 4 is installed on the water outlet pipeline, and the solenoid valve 4 is connected with the controller.

Further, the oil cooling system 2 includes a cooling device and a temperature sensor for detecting the temperature of the oil, and both the temperature sensor and the cooling device are connected to the controller. Among them, the cooling device can be a fan. When the temperature sensor detects that the oil temperature of the system is higher than the set oil temperature, the controller starts the fan, the fan starts to rotate, and the cooling is realized by exchanging heat with the environment until the oil temperature drops to the set value. oil temperature to ensure the normal operation of the entire system.

Further, with reference to Figures 2-3, the oil filter module 3 integrates a pre-coarse filter module 6, a temperature sensor, an oil filter pump 7, an impurity-removing coalescing filter 8 and a separation filter module module 9;

The pre-coarse filter module 6 and the temperature sensor are all installed in the first box, and a second box is arranged above the first box. The oil filter pump 7, the impurity-removing coalescing filter 8 and the separation The filter element modules 9 are all installed in the second box;

The pre-coarse filter module 6 is connected with the oil filter pump 7, the oil inlet end of the oil filter pump 7 is equipped with a temperature sensor, the oil filter pump 7 is connected with the impurity-removing coalescing filter 8, and the impurity-removing coalescing filter 8 is connected. The filter 8 is connected to the separation cartridge module 9 .

Further, the front panel of the first box body is provided with a first oil passage inlet 10, and the oil enters the pre-coarse filter module 6 through the first oil passage inlet 10, and the pre-coarse filter module 6 The oil enters the oil filter pump 7 from the second oil passage inlet 12, and the oil in the oil filter pump 7 flows from the second oil passage outlet 15 through the third oil passage inlet 16 into the impurity removal coalescing filter 8, The oil in the impurity removal coalescing filter 8 flows out from the third oil passage outlet 17 and enters the separation filter element module 9 through the fourth oil passage inlet 19, and the oil in the separation filter element module 9 passes through the fourth oil passage outlet. 18 flows back to vacuum pump 1.

Further, the temperature sensor is installed at the second oil passage inlet 12 of the oil filter pump 7 .

Further, a first pressure sensor is installed at the oil inlet end of the oil filter pump 7, and a second pressure sensor is installed at the oil outlet end.

Further, the upper left corner of the side plate of the first box body is provided with a temperature sensor access port 11, and the temperature sensor is installed at the temperature sensor access port 11 for detecting the oil temperature of the oil inlet end of the oil filter pump 7;

The side plate of the second box body is provided with a second pressure sensor access port 14, and the second pressure sensor is installed at the second pressure sensor access port 14 for detecting the pressure of the oil outlet end of the oil filter pump 7;

The top plate of the second box body is provided with a first pressure sensor access port 13, an impurity-removing coalescing filter 8 installation port, and a separation filter element module 9 installation port in sequence from left to right; the first pressure sensor is installed in the first pressure sensor. The pressure sensor access port 13 is used to detect the pressure of the oil inlet end of the oil filter pump 7, and the first pressure sensor is located in front of or behind the temperature sensor;

A processing port 20 is reserved on the front panel of the second box.

Further, the top plate of the second box body is also provided with an exhaust valve access port, the exhaust valve access port is located above the oil filter pump 7, the exhaust valve access port is equipped with an exhaust valve, the exhaust valve access port is installed The valve is connected to the controller.

Specifically, the gas flow of the system under normal pressure can be calculated according to the system pressure and related detection data. If it is less than 2L/min, the controller will control the exhaust valve to automatically exhaust; , when the rise and fluctuation of different liquid levels are 5~10mm, the controller will open the exhaust valve, and when the oil level of vacuum pump 1 returns to the set threshold, the controller will automatically close the exhaust valve.

Specifically, the main functions of each component in the system are as follows: vacuum pump 1, the main component of the entire system, is used to maintain the vacuum degree of the system, and its lubrication and sealing are completed by vacuum oil. The oil cooling system 2 is used to monitor and adjust the oil temperature of the system in real time to ensure the long-term stable operation of the system and not be affected by other temperature factors (such as ambient temperature), and protect the service life of accessories, motors and oil pumps. Oil filter module 3 is an integrated design module, which is responsible for the main impurity and water removal module of vacuum pump 1 oil in the whole system. It uses coalescence, centrifugation and separation technology to complete the demulsification, centrifugation and separation of the emulsified oil product of vacuum pump 1. Oil removal and water removal. The solenoid valve 4, the automatic drainage solenoid valve 4 set in the whole system, ensures the normal operation of the water removal action of the separation device in the oil filter module 3. The water storage device 5 is used to store the waste water generated by the oil filter module 3 . The pre-coarse filter module 6, including the pre-filter element, is used as a coarse filter device for the oil of the vacuum pump 1 before entering the oil filter module 3 to filter and remove large particles and pollutants in advance, and the entire oil filter module 3 The impurity and water removal module has a certain degree of protection, thereby prolonging the service life of the impurity and water removal module. The oil filter pump 7 is installed with an oil filter pump core, which can supply the oil of the vacuum pump 1 to the impurity and water removal system through the oil filter pump 7 . The impurity-removing coalescing filter element 8 is installed with a corresponding type of coalescing filter element; it mainly removes the impurities in the oil of the vacuum pump 1 and improves the purity of the oil. At the same time, the upper end of the coalescing filter element of the selected model has a professional system exhaust port, which can discharge the gas that has been coalesced for a long time in the coalescing filter element in stages, so as not to affect the fluctuation of the oil level and the oil output. It mainly coalesces the water into larger water droplets and enters the separation device, which plays an important role in the removal of impurities in the oil filter system and the coalescence of large particles of water. The separation filter element module 9 is equipped with a water removal and separation filter element. Due to the action of gravity, smaller water droplets can be centrifuged through the separation filter element and then separated and settled into the water storage device 5 . The first oil passage inlet 10 is used for the oil of the vacuum pump 1 to enter the pre-filter. The temperature sensor is connected to the port 11 for installing a temperature sensor to monitor the temperature of the oil in the vacuum pump 1 of the entire system. The second oil circuit inlet 12 enters the oil filter pump 7 through the second oil circuit inlet 12 after the entire oil circuit passes through the pre-coarse filter module 6 . The first pressure sensor access port 13 is used to install a pressure sensor at the front end of the oil filter pump 7, so as to monitor the pressure value at the front end of the oil filter pump 7, and can also be used for the exhaust port of the system. The second pressure sensor access port 14 is used to install a pressure sensor at the rear end of the oil filter pump 7, so as to monitor the pressure value at the rear end of the oil filter pump 7, and compare the pressure value at the front end of the oil filter pump 7 to determine whether the system oil filter pump 7 is running normally. . The second oil passage outlet 15 is used for the oil of the vacuum pump 1 to flow out smoothly into the impurity-removing coalescing filter 8 . The third oil passage inlet 16 is the inlet for the oil of the vacuum pump 1 to enter the impurity-removing coalescing filter 8 . At the third oil passage outlet 17 , the oil of the vacuum pump 1 enters the separation filter element module 9 from the third oil passage outlet 17 after removing impurities and agglomerating large water droplets through the coalescing filter element. In the fourth oil path inlet 19 , the oil of the vacuum pump 1 enters the separation filter element module 9 through the fourth oil path inlet 19 after passing through the impurity-removing coalescing filter 8 . (The special design of this entrance follows the overall design of the technical requirements). At the fourth oil circuit outlet 18 , the oil of the vacuum pump 1 flows out from the fourth oil circuit outlet 18 after passing through the integral oil filter module 3 and then enters the vacuum pump 1 . The machining port 20 is a reserved port for the convenience of the machining process during the machining process, and can also be used for other technical improvements and functions in the later stage.

In summary, the working process of the system is as follows:

1. Pumping steam operation:

a) After the system is powered on, when the vacuum pump 1 is running, the oil filter pump 7 starts to run. The oil of the vacuum pump 1 passes through the oil cold discharge system 2 and the oil filter module 3 in turn through the pipeline, and then returns the oil to the vacuum pump 1 through the pipeline. The outgoing water enters the water storage device 5 from the water storage cup in the separation filter element module 9 through the return water pipeline through the solenoid valve 4 .

b) Specific control commands:

After the system runs for a period of time, the oil temperature of the second oil passage inlet 12 of the oil filter pump 7 gradually increases. When the oil temperature of the second oil passage inlet 12 of the oil filter pump 7 is higher than the set temperature, the oil cooling discharge is started. System 2, after the oil temperature drops to the set temperature, close the oil cold discharge system 2; during this process, the oil flow is as follows: the first oil circuit inlet 10 → the pre-coarse filter module 6 → the second oil circuit inlet 12 → oil filter pump 7 → second oil circuit outlet 15 → third oil circuit inlet 16 → impurity removal coalescing filter 8 → third oil circuit outlet 17 → fourth oil circuit inlet 19 → separation filter element module 9 → fourth oil Road outlet 18→vacuum pump 1. When the oil level of the vacuum pump 1 is higher than the set high liquid level, the solenoid valve 4 is opened, and when the oil level is lower than or equal to the set low liquid level, the solenoid valve 4 is closed.

2. Pumping acid-base gas operation: its specific operation mode and oil circuit system are the same as pumping water and steam. It should be emphasized here that if the vacuum pump 1 continues to work with the set corresponding working parameters (including time, liquid level, etc.), the oil filter pump 7 will be turned on to work with the set corresponding working parameters (including time, etc.).

3. Self-cleaning operation:

When the system is running, it can go into self-cleaning mode after running for a period of time. After the vacuum pump 1 runs the set working parameters, the oil filter pump 7 is started; after the oil filter pump 7 starts the set working parameters, the vacuum pump 1 is turned off; after the vacuum pump 1 stops, the oil filter pump 7 runs the set working parameters and then stops; the other operating conditions Consistent with pumped steam operating conditions.

Fourth, manual control operation:

The entire rotary vane vacuum pump 1 oil removal and water removal automatic control system can be manually controlled and operated. The specific operation is: after the vacuum pump 1 is started alone, the oil filter pump 7 can be turned on. After starting the oil filter pump 7, observe the operating liquid level of the system. When the operating standard is not reached, the water can be released manually (the specific liquid level parameters are consistent with the above operating modes).

The above operation modes do not represent all the operation modes of this solution. Users can fine-tune the system according to the needs of the industry to achieve different functions.

To sum up, the fully automatic control system for removing impurities and water from the oil of the vacuum pump 1 provided by the present invention can be operated completely automatically and realize unattended operation. Impurities and moisture are effectively removed. The system can be applied to the oil impurity and water removal of rotary vane vacuum pump 1 and other small oil systems under complex working conditions. It has the following advantages: ① The system is modularized as a whole and the device is integrated, and it is completed by coalescence, centrifugation and separation technology. The vacuum pump 1 emulsifies the demulsification, centrifugation and separation of the oil, and completes the process of removing impurities and water of the oil at the same time. ②The system is fully automatically controlled, and the control process is all controlled by mature PLC programs, without human observation and intervention, and the self-cleaning function of the vacuum pump 1 is realized through software. ③ By adding the pre-coarse filter module 6, the large particles of impurities in the oil of the vacuum pump 1 can be effectively pre-filtered, and the impurity and water removal modules of the entire oil filter module 3 can be protected to a certain extent, thereby prolonging the impurity removal, Service life of the water removal module. ④By adding the oil cooling system 2, the temperature sensor and cooling device are used to realize the real-time monitoring and control of the oil temperature, so as to avoid the influence of the oil temperature by the environment and other factors, and realize the stable control of the equipment operating state by giving the constant temperature control. ⑤ By installing pressure sensors at the oil inlet and outlet ends of the oil filter pump 7, the operation of the oil filter pump 7 and the filter element can be monitored more closely, which is convenient to cooperate with the system in time to prolong the service life of the oil filter pump 7.

The above descriptions are only specific embodiments of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention.

It should be understood that the present invention is not limited to what has been described above and that various modifications and changes may be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims (10)

1. A vacuum pump oil removal automatic control system for removing impurities and water is characterized in that, comprising a vacuum pump (1), an oil cooling system (2) and an oil filter module for purifying the oil which are connected in sequence (3), the vacuum pump (1), the oil cooling system (2), and the oil filter module (3) are all connected to the controller; the oil filter module (3) is provided with an oil outlet and a water outlet to purify The latter oil enters the vacuum pump (1) from the oil outlet through the oil return pipeline to form a circulation, and the filtered impurities and water vapor flow from the water outlet to the water storage device (5). 2. The automatic control system for removing impurities and water in vacuum pump oil according to claim 1, wherein the water outlet is connected with a water outlet pipeline, and a solenoid valve (4) is installed on the water outlet pipeline. The solenoid valve (4) is connected to the controller. 3. The automatic control system for removing impurities and water in vacuum pump oil according to claim 1, characterized in that, the oil cooling system (2) comprises a cooling device and a temperature sensor for detecting the temperature of the oil, so the Both the temperature sensor and the cooling device are connected to the controller. 4. The automatic control system for removing impurities and water in vacuum pump oil according to claim 3, characterized in that, the oil filter module (3) consists of a pre-coarse filter module (6), a temperature sensor, an oil filter pump ( 7), the impurity-removing coalescing filter (8) and the separation filter element module (9) are integrated into one; The pre-coarse filter module (6) and the temperature sensor are both installed in a first box body, a second box body is arranged above the first box body, the oil filter pump (7), the impurity removal coalescence filter The filter (8) and the separation filter element module (9) are installed in the second box; The pre-coarse filter module (6) is connected to an oil filter pump (7), a temperature sensor is installed at the oil inlet end of the oil filter pump (7), and the oil filter pump (7) is connected to an impurity-removing coalescing filter ( 8) Connection, the impurity removal coalescing filter (8) is connected with the separation filter element module (9). 5. The automatic control system for removing impurities and water in vacuum pump oil according to claim 4, characterized in that, the front panel of the first box is provided with a first oil passage inlet (10), and the oil passes through the The first oil passage inlet (10) enters the pre-rough filter module (6), and the oil in the pre-rough filter module (6) enters the oil filter pump (7) from the second oil passage inlet (12) ), the oil in the oil filter pump (7) flows from the second oil passage outlet (15) through the third oil passage inlet (16) into the impurity-removing coalescing filter (8), and the impurity-removing coalescing filter The oil in the filter (8) flows out from the third oil passage outlet (17) through the fourth oil passage inlet (19) into the separation filter element module (9), and the oil in the separation filter element module (9) passes through the fourth oil passage inlet (19). The oil outlet (18) flows back to the vacuum pump (1). 6 . The automatic control system for removing impurities and water in vacuum pump oil according to claim 5 , wherein the temperature sensor is installed at the second oil passage inlet ( 12 ) of the oil filter pump ( 7 ). 7 . 7. The automatic control system for removing impurities and water in vacuum pump oil according to claim 5, wherein the oil inlet end of the oil filter pump (7) is provided with a first pressure sensor, and the oil outlet end is provided with a second pressure sensor. Pressure Sensor. 8. The fully automatic control system for removing impurities and water in vacuum pump oil according to claim 7, is characterized in that, The upper left corner of the side plate of the first box body is provided with a temperature sensor access port (11), and the temperature sensor is installed at the temperature sensor access port (11) for detecting the oil temperature of the oil inlet end of the oil filter pump (7). ; The side plate of the second box body is provided with a second pressure sensor access port (14), the second pressure sensor is installed at the second pressure sensor access port (14), and is used to detect the oil output from the oil filter pump (7). end pressure; The top plate of the second box body is provided with a first pressure sensor access port (13), an impurity-removing coalescing filter (8) mounting port, and a separation filter element module (9) mounting port in sequence from left to right; the first The pressure sensor is installed at the first pressure sensor access port (13) for detecting the pressure at the oil inlet end of the oil filter pump (7), and the first pressure sensor is located in front of or behind the temperature sensor; A processing port (20) is reserved on the front panel of the second box body. 9. The automatic control system for removing impurities and water in vacuum pump oil according to claim 8, wherein the top plate of the second box body is also provided with an exhaust valve access port, and the exhaust valve access port is located at the Above the oil filter pump (7), an exhaust valve is installed at the inlet port of the exhaust valve, and the exhaust valve is connected to the controller. 10. A method of using a vacuum pump oil removal automatic control system for removing impurities and water, it is characterized in that, applying the vacuum pump oil removing impurities automatic control system as claimed in any one of claims 5-9, specifically using Methods as below: 1) After the system is powered on, the vacuum pump (1) runs, the oil filter pump (7) starts to run, and the oil of the vacuum pump (1) passes through the pipeline through the cold exhaust temperature control system and the oil filter module (3) in turn, and then returns to the oil through the pipeline. The vacuum pump (1), the water filtered by the system enters the water storage device (5) through the water outlet; 2) After the system runs for a period of time, the oil temperature of the second oil passage inlet (12) of the oil filter pump (7) gradually increases, and when the oil temperature of the second oil passage inlet (12) of the oil filter pump (7) is higher than the set oil temperature When the temperature is high, the controller starts the oil cold discharge system (2) to work until the oil temperature drops to the set oil temperature; wherein, the oil flow direction is as follows: the first oil circuit inlet (10) → the pre-coarse filter module (6) )→the second oil circuit inlet (12)→the oil filter pump (7)→the second oil circuit outlet (15)→the third oil circuit inlet (16)→the impurity removal coalescing filter (8)→the third oil circuit outlet (17)→Inlet of the fourth oil circuit (19)→Separation filter element module (9)→Outlet of the fourth oil circuit (18)→Vacuum pump (1).

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