An oil path self-cleaning device, method, system, electronic device and storage medium

Abstract

The oil path self-cleaning device, method, system, electronic equipment and storage medium provided by the embodiment of the present application can realize the effects of automatic adsorption of impurities and automatic removal of impurities by configuring at least one sedimentation pipe, an electromagnetic adsorption device and a decontamination device for the sedimentation pipe in the oil path self-cleaning device, winding an electromagnetic circuit of the electromagnetic adsorption device around the sedimentation pipe, configuring the oil path pipe with the screw compressor, opening a connecting port on the side of the oil path pipe, connecting a first sedimentation pipe port of the sedimentation pipe with the connecting port, and connecting a second sedimentation pipe port of the sedimentation pipe with the decontamination device.

Description

Technical Field

[0001] This invention relates to the field of oil circuit self-cleaning technology, and in particular to an oil circuit self-cleaning device, an oil circuit self-cleaning method, an oil circuit self-cleaning system, an electronic device, and a computer-readable storage medium. Background Technology

[0002] Twin-screw compressors have two rotors, a male and a female, along with their bearings and other components. Their structure is relatively complex, and the precision required for the fit between the rotating parts is high. Therefore, the role of compressor lubricating oil is particularly important to ensure that each rotating part can work reliably.

[0003] In practical applications, due to assembly, welding, fatigue wear, and other reasons, the lubricating oil contains a lot of impurities such as iron sand. The presence of these impurities undermines the function of the lubricating oil, further accelerates the wear between the rotating parts inside the compressor, and may even lead to abnormal situations where the male and female rotors of the compressor are stuck and cannot work. Summary of the Invention

[0004] The present invention provides an oil circuit self-cleaning device, method, system, electronic device, and computer-readable storage medium to overcome or at least partially solve the above-mentioned problems.

[0005] This invention discloses an oil circuit self-cleaning device applied to a screw compressor. The oil circuit self-cleaning device includes at least one sedimentation tube, an electromagnetic adsorption device, and a cleanup device for the sedimentation tube.

[0006] The electromagnetic circuit of the electromagnetic adsorption device is wound around the precipitation tube;

[0007] The screw compressor is equipped with an oil circuit pipe;

[0008] The oil pipe has a connection port on its side, and the first sedimentation tube port of the sedimentation tube is connected to the connection port; the second sedimentation tube port of the sedimentation tube is connected to the impurity removal device.

[0009] Optionally, the electromagnetic adsorption device includes a current sensor connected to the electromagnetic circuit, and the impurity removal device includes a digital controller. The current sensor is configured to acquire the real-time current value of the electromagnetic circuit and send the real-time current value to the digital controller.

[0010] Optionally, the impurity removal device includes an impurity removal pipe and a first electromagnetic check valve disposed in the impurity removal pipe; the first impurity removal port of the impurity removal pipe is connected to the port of the second sedimentation tube;

[0011] The digital controller is configured to:

[0012] The impedance value of the electromagnetic circuit is determined based on the current value;

[0013] In response to the impedance value being greater than a preset threshold, a power-off signal is generated to control the electromagnetic circuit to be powered off;

[0014] After the electromagnetic circuit is de-energized, a pulse signal is generated to control the opening of the first electromagnetic check valve.

[0015] Optionally, the impurity removal device includes a filter pipe, the second impurity removal port of the impurity removal pipe being connected to the first filter port of the filter pipe; a filter screen is provided inside the impurity removal pipe.

[0016] Optionally, the self-cleaning device further includes a circulation and recovery device, and the second filter port of the filter pipe is connected to the circulation and recovery device; the circulation and recovery device is used to transport the lubricating oil flowing out from the second filter port to the oil pipe.

[0017] Optionally, the recycling device includes an oil collection container, the top of which is connected to the second filter port; an oil level sensor is provided on the inner wall of the oil collection container; the oil level sensor is used to monitor the oil level in the oil collection container.

[0018] Optionally, the oil collection container has an oil outlet at the bottom, and the circulation and recovery device includes an oil injection pump and a second electromagnetic check valve connected to the oil outlet;

[0019] When the oil level sensor detects that the oil level in the oil collection container is higher than the preset oil level threshold, it sends an oil level alarm message to the digital controller.

[0020] The digital controller is configured to:

[0021] In response to receiving the oil level alarm information, a first control signal and a second control signal are generated;

[0022] The first control signal is used to control the second electromagnetic check valve to open;

[0023] The second control signal is used to control the oil pump to draw the lubricating oil from the oil outlet and inject the lubricating oil into the oil pipe through the second electromagnetic check valve.

[0024] Optionally, the digital controller is configured to:

[0025] After the first electromagnetic check valve is opened based on the pulse signal, when it is determined that the first electromagnetic check valve is closed, an energizing signal is generated again to control the electromagnetic circuit to be powered on.

[0026] This invention also discloses an oil circuit self-cleaning method applied to the digital controller of a screw compressor. The method may be configured with an oil circuit pipe. The oil circuit self-cleaning device includes at least one sedimentation pipe, an electromagnetic adsorption device, and a cleanup device for the sedimentation pipe. The electromagnetic circuit of the electromagnetic adsorption device is wound around the sedimentation pipe. A connection port is provided on the side of the oil circuit pipe, and a first sedimentation pipe port of the sedimentation pipe is connected to the connection port. A second sedimentation pipe port of the sedimentation pipe is connected to the cleanup device. The method includes:

[0027] Generate an energizing signal to control the electromagnetic circuit to power on;

[0028] Receive real-time current values ​​and determine the impedance value of the electromagnetic circuit based on the current values;

[0029] In response to the impedance value being greater than a preset threshold, a power-off signal is generated to control the electromagnetic circuit to be powered off;

[0030] After the electromagnetic circuit is de-energized, a purification signal is generated to control the purification device to adsorb impurities in the precipitation tube.

[0031] This invention also discloses an oil circuit self-cleaning system applied to a digital controller of a screw compressor. The screw compressor is equipped with an oil circuit pipe. The oil circuit self-cleaning device includes at least one sedimentation pipe, an electromagnetic adsorption device, and a cleanup device for the sedimentation pipe. The electromagnetic circuit of the electromagnetic adsorption device is wound around the sedimentation pipe. A connection port is provided on the side of the oil circuit pipe, and a first sedimentation pipe port of the sedimentation pipe is connected to the connection port. A second sedimentation pipe port of the sedimentation pipe is connected to the cleanup device. The system includes:

[0032] A power-on signal generation module is used to generate a power-on signal to control the electromagnetic circuit to be powered on;

[0033] A real-time current value receiving module is used to receive real-time current values ​​and determine the impedance value of the electromagnetic circuit based on the current values.

[0034] A power-off signal generation module is used to generate a power-off signal in response to the impedance value being greater than a preset threshold, so as to control the electromagnetic circuit to be powered off.

[0035] The impurity removal signal generation module is used to generate an impurity removal signal after the control electromagnetic circuit is de-energized, so as to control the impurity removal device to adsorb impurities in the precipitation tube.

[0036] This invention also discloses an electronic device, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus;

[0037] The memory is used to store computer programs;

[0038] When the processor executes a program stored in the memory, it implements the method described in the embodiments of the present invention.

[0039] This invention also discloses a computer-readable storage medium storing instructions that, when executed by one or more processors, cause the processors to perform the methods described in this invention.

[0040] The embodiments of the present invention have the following advantages:

[0041] In this embodiment of the invention, the oil circuit self-cleaning device is equipped with at least one sedimentation tube, an electromagnetic adsorption device, and a dirt removal device for the sedimentation tube; the electromagnetic circuit of the electromagnetic adsorption device is wound around the sedimentation tube; the screw compressor is equipped with an oil circuit pipe; a connection port is opened on the side of the oil circuit pipe, the first sedimentation tube port of the sedimentation tube is connected to the connection port; the second sedimentation tube port of the sedimentation tube is connected to the dirt removal device, thereby enabling the oil circuit self-cleaning device of this embodiment of the invention to simultaneously achieve the effects of automatically adsorbing and automatically removing impurities. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the structure of an oil circuit self-cleaning device provided in an embodiment of the present invention;

[0043] Figure 2 This is a schematic diagram of the structure of an electromagnetic adsorption device provided in an embodiment of the present invention;

[0044] Figure 3 This is a schematic diagram of the structure of a purification device provided in an embodiment of the present invention;

[0045] Figure 4 This is a schematic diagram of the structure of a recycling device provided in an embodiment of the present invention;

[0046] Figure 5 This is a schematic diagram of the structure of a screw compressor provided in an embodiment of the present invention;

[0047] Figure 6 This is a schematic diagram of another oil circuit self-cleaning device provided in an embodiment of the present invention;

[0048] Figure 7 This is a flowchart of the steps of an oil circuit self-cleaning method provided in an embodiment of the present invention;

[0049] Figure 8 This is a structural block diagram of an oil circuit self-cleaning system provided in an embodiment of the present invention;

[0050] Figure 9 This is a hardware structure block diagram of an electronic device provided in an embodiment of the present invention;

[0051] Figure 10 This is a schematic diagram of a computer-readable medium provided in an embodiment of the present invention. Detailed Implementation

[0052] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0053] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of an oil circuit self-cleaning device provided in an embodiment of the present invention.

[0054] In practical applications, the screw compressor of this embodiment of the invention includes an oil circuit self-cleaning device comprising at least one sedimentation tube 101, an electromagnetic adsorption device 102, and a cleanup device 103 for the sedimentation tube 101.

[0055] The electromagnetic circuit of the electromagnetic adsorption device 102 is wound around the sedimentation tube 101;

[0056] The screw compressor is equipped with an oil passage pipe 104, and a connection port is provided on the side of the oil passage pipe 104. The first sedimentation pipe port of the sedimentation pipe 101 is connected to the connection port.

[0057] The second sedimentation tube port of sedimentation tube 101 is connected to the impurity removal device 103.

[0058] In practice, the oil circuit self-cleaning device can remove iron filings from the oil circuit pipe 104 through the following process.

[0059] The electromagnetic circuit of the electromagnetic adsorption device 102 can be an AC electromagnetic coil. When the oil in the oil pipe 104 is flowing, the AC electromagnetic coil can adsorb impurities such as iron slag in the oil pipe 104 when energized, and adsorb the impurities from the first sedimentation tube port into the sedimentation tube 101, thus achieving the function of self-adsorption. The second sedimentation tube port of the sedimentation tube 101 is connected to the impurity removal device 103. The impurity removal device 103 can open the second sedimentation tube port in a predetermined manner to connect the impurity removal device 103 with the sedimentation tube 101. When the impurity removal device 103 is connected to the sedimentation tube 101, the oil in the sedimentation tube 101 can be extracted through the second sedimentation tube port. During the oil extraction process, the impurities adsorbed in the sedimentation tube 101 can be removed, so that the oil self-cleaning device of this embodiment can simultaneously achieve the effects of automatically adsorbing impurities and automatically removing impurities.

[0060] In this embodiment of the invention, the oil circuit self-cleaning device is equipped with at least one sedimentation tube, an electromagnetic adsorption device, and a dirt removal device for the sedimentation tube; the electromagnetic circuit of the electromagnetic adsorption device is wound around the sedimentation tube; the screw compressor is equipped with an oil circuit pipe; a connection port is opened on the side of the oil circuit pipe, the first sedimentation tube port of the sedimentation tube is connected to the connection port; the second sedimentation tube port of the sedimentation tube is connected to the dirt removal device, thereby enabling the oil circuit self-cleaning device of this embodiment of the invention to simultaneously achieve the effects of automatically adsorbing and automatically removing impurities.

[0061] Based on the above embodiments, modified embodiments of the above embodiments are proposed. It should be noted that, in order to keep the description brief, only the differences from the above embodiments are described in the modified embodiments.

[0062] In an optional embodiment of the present invention, the electromagnetic adsorption device includes a current sensor connected to the electromagnetic circuit, the impurity removal device includes a digital controller, and the current sensor is configured to acquire the real-time current value of the electromagnetic circuit and send the real-time current value to the digital controller.

[0063] refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of an electromagnetic adsorption device provided in an embodiment of the present invention. In a specific implementation, the impurity removal device of the present invention may also include a digital controller. The digital controller can be used to execute the part involving data calculation in the oil circuit self-cleaning device. At the same time, it can transmit and receive control signals. The oil circuit self-cleaning device includes at least one sedimentation tube 201 and an electromagnetic adsorption device 202. The electromagnetic adsorption device 202 may include an electromagnetic circuit and a current sensor 203 connected to the electromagnetic circuit.

[0064] The electromagnetic circuit of the electromagnetic adsorption device 202 is wound around the sedimentation tube 202;

[0065] The screw compressor is equipped with an oil passage pipe 204, and a connection port is provided on the side of the oil passage pipe 204. The first sedimentation pipe port of the sedimentation pipe 201 is connected to the connection port.

[0066] In practice, the oil circuit self-cleaning device can remove iron filings from the oil circuit pipe 204 through the following process.

[0067] The electromagnetic circuit can be an AC electromagnetic coil. When the oil in the oil pipe 204 is flowing, the AC electromagnetic coil can adsorb impurities such as iron slag in the oil pipe 204 when energized, and adsorb the impurities from the first sedimentation tube port into the sedimentation tube 201, thus playing a self-adsorption function. The current sensor 203 can be configured to acquire the real-time current value of the electromagnetic circuit and send the real-time current value to the digital controller. For example, the digital controller can be configured to generate a power-off signal based on the current value to control the electromagnetic circuit to de-energize, so that the impurities such as iron slag adsorbed in the oil pipe 204 settle to the bottom of the sedimentation tube 204, thereby improving the efficiency of automatic impurity removal.

[0068] In this embodiment of the invention, by configuring the electromagnetic adsorption device with a current sensor connected to the electromagnetic circuit, and the impurity removal device including a digital controller, the current sensor is configured to acquire the real-time current value of the electromagnetic circuit and send the real-time current value to the digital controller, thereby enabling the monitoring of the operating status of the electromagnetic adsorption device and improving the cleaning efficiency of the oil pipe.

[0069] refer to Figure 3 , Figure 3 This is a schematic diagram of the structure of a purification device provided in an embodiment of the present invention;

[0070] In an optional embodiment of the present invention, the current sensor 203 and the digital controller 206 may be integrated on a cleaning device, which may include a cleaning pipe 205 and a first electromagnetic check valve disposed on the cleaning pipe 205.

[0071] The first impurity removal port of the impurity removal pipe 205 is connected to the second sedimentation pipe port;

[0072] The digital controller 206 is configured to:

[0073] The impedance value of the electromagnetic circuit is determined based on the current value;

[0074] In response to the impedance value being greater than a preset threshold, a power-off signal is generated to control the electromagnetic circuit to be powered off;

[0075] After the electromagnetic circuit is de-energized, a pulse signal is generated to control the opening of the first electromagnetic check valve.

[0076] A pulse signal is a sudden change in signal characteristics during transmission; that is, the signal rapidly reaches a high value within a short period and then quickly returns to its initial value. Pulse signals are commonly used in digital signal processing, communication systems, and control systems.

[0077] The mathematical expression for a pulse signal is:

[0078] x(t)=A(t)*u(t)

[0079] in:

[0080] x(t) represents the pulse signal

[0081] A(t) represents the amplitude of the pulse signal.

[0082] u(t) represents the unit step function

[0083] Common types of pulse signals include:

[0084] A pulse spike is a signal whose amplitude suddenly reaches a high value within a very short period of time and then quickly returns to its initial value. The width of a pulse spike is usually expressed as the pulse duration, which is the time the pulse signal is in a high-level state.

[0085] A rectangular pulse is a pulse whose amplitude remains high for a certain period of time before quickly returning to its initial value. The width of a rectangular pulse is usually expressed as pulse width, which is the duration of the pulse signal in a high-level state.

[0086] Step pulse: The amplitude of a step pulse changes abruptly at a certain moment and remains at the new value. The width of a step pulse is usually expressed as the rise time, which is the time required for the pulse signal to rise from its initial value to its final value.

[0087] Pulse signals have the following characteristics:

[0088] Amplitude: The amplitude of a pulse signal refers to the value of the pulse signal when it is in a high-level state.

[0089] Width: The width of a pulse signal refers to the time the pulse signal is in the high-level state.

[0090] Rise time: The rise time of a pulse signal refers to the time required for the pulse signal to rise from its initial value to its final value.

[0091] Fall time: The fall time of a pulse signal refers to the time required for the pulse signal to fall from its final value back to its initial value.

[0092] Repetition frequency: The repetition frequency of a pulse signal refers to the number of times the pulse signal occurs per unit time.

[0093] Duty cycle: The duty cycle of a pulse signal is the ratio of the time the pulse signal occupies in the high-level state to the total time in one cycle.

[0094] In practice, the oil circuit self-cleaning device can remove iron filings from the oil circuit pipe 204 through the following process.

[0095] The electromagnetic circuit can be an AC electromagnetic coil. When the oil in the oil pipe 204 is flowing, the AC electromagnetic coil, when energized, can adsorb impurities such as iron slag in the oil pipe 204 and draw the impurities from the first sedimentation tube port into the sedimentation tube 201, thus achieving a self-adsorption function. The current sensor 203 can be configured to acquire the real-time current value of the electromagnetic circuit and send the real-time current value to the digital controller 206. The digital controller 206 can be configured to calculate the impedance value of the electromagnetic circuit based on the current value. When the impedance value is greater than a preset threshold, an interruption can be generated. An electrical signal, through a power-off signal, controls the electromagnetic circuit to de-energize, causing impurities such as iron slag in the adsorption oil pipe 204 to settle to the bottom of the settling pipe 204. After the control electromagnetic circuit is de-energized, the digital controller 206 can also generate a pulse signal, and control the first electromagnetic check valve in the impurity removal pipe 205 to open for a short time, thereby achieving a very small amount of high-pressure oil spraying out of the settling pipe 201. At the same time as the oil is sprayed out, the impurities settled to the bottom of the settling pipe 204 are also carried out to the outside of the high-pressure oil circuit, achieving the purpose of impurity removal and further improving the efficiency of automatic impurity removal.

[0096] In this embodiment of the invention, by configuring a cleanup pipe for the cleanup device and a first electromagnetic check valve disposed on the cleanup pipe; the first cleanup port of the cleanup pipe is connected to the port of the second sedimentation tube; the digital controller is configured to: determine the impedance value of the electromagnetic circuit based on the current value; generate a power-off signal in response to the impedance value being greater than a preset threshold to control the electromagnetic circuit to be de-energized; and generate a pulse signal after controlling the electromagnetic circuit to be de-energized to control the first electromagnetic check valve to open, thereby further improving the efficiency of automatic impurity removal.

[0097] refer to Figure 3 , Figure 3 This is a schematic diagram of a purification device provided in an embodiment of the present invention. In an optional embodiment of the present invention, the purification device includes a filter pipe, and the second purification port of the purification pipe is connected to the first filter port of the filter pipe; a filter screen 207 is provided inside the purification pipe.

[0098] In practice, the oil circuit self-cleaning device can remove iron filings from the oil circuit pipe 204 through the following process.

[0099] The electromagnetic circuit can be an AC electromagnetic coil. When the oil in the oil pipe 204 is flowing, the AC electromagnetic coil, when energized, can adsorb impurities such as iron slag from the oil pipe 204 and draw them from the first sedimentation tube port into the sedimentation tube 201, thus achieving a self-adsorption function. The current sensor 203 can be configured to acquire the real-time current value of the electromagnetic circuit and send it to the digital controller. The digital controller 206 can be configured to calculate the impedance value of the electromagnetic circuit based on the current value. When the impedance value is greater than a preset threshold, a power-off signal can be generated to control the electromagnetic circuit to de-energize, causing the impurities such as iron slag adsorbed in the oil pipe 204 to settle to the bottom of the sedimentation tube 204. After the control electromagnetic circuit is de-energized, the digital controller 206 can also generate a pulse signal and control the first electromagnetic check valve to open for a short time, thereby achieving a very small amount of high-pressure oil sprayed out of the sedimentation tube 201. At the same time as the oil is sprayed out, the impurities that have settled to the bottom of the sedimentation tube 204 are also carried out to the outside of the high-pressure oil circuit. For the oil sprayed out of the high-pressure oil circuit, it can enter the filter pipe through the second impurity removal port of the impurity removal pipe and the first filter port of the filter pipe. Iron filings and impurities can be intercepted by the filter screen 207. The filtered oil can flow out through the filter pipe to achieve the purpose of impurity removal. At the same time, it creates conditions for oil recovery and further improves the efficiency of automatic impurity removal.

[0100] In this embodiment of the invention, a filter pipe is configured for the impurity removal device, and the second impurity removal port of the impurity removal pipe is connected to the first filter port of the filter pipe. A filter screen is provided inside the impurity removal pipe to achieve the purpose of impurity removal. At the same time, it creates conditions for oil recovery and further improves the efficiency of automatic impurity removal.

[0101] In an optional embodiment of the present invention, the self-cleaning device further includes a circulation and recovery device, wherein the second filter port of the filter pipe is connected to the circulation and recovery device; the circulation and recovery device is used to transport the lubricating oil flowing out from the second filter port to the oil pipe.

[0102] In practice, the oil circuit self-cleaning device can remove iron filings from the oil circuit pipe 204 through the following process.

[0103] The electromagnetic circuit can be an AC electromagnetic coil. When the oil in the oil pipe 204 is flowing, the AC electromagnetic coil, when energized, can adsorb impurities such as iron slag from the oil pipe 204 and draw them from the first sedimentation tube port into the sedimentation tube 201, thus achieving a self-adsorption function. The current sensor 203 can be configured to acquire the real-time current value of the electromagnetic circuit and send it to the digital controller. The digital controller 206 can be configured to calculate the impedance value of the electromagnetic circuit based on the current value. When the impedance value is greater than a preset threshold, a power-off signal can be generated to control the electromagnetic circuit to de-energize, causing the impurities such as iron slag adsorbed in the oil pipe 204 to settle to the bottom of the sedimentation tube 204. After the electromagnetic circuit is de-energized, the digital controller 206 can also generate a pulse signal and... A pulse signal controls the first electromagnetic check valve to open for a short time, thereby spraying out a very small amount of high-pressure oil from the sedimentation pipe 201. At the same time as the oil is sprayed out, impurities that have settled to the bottom of the sedimentation pipe 204 are also carried out to the outside of the high-pressure oil circuit. The oil sprayed out of the high-pressure oil circuit can enter the filter pipe through the second impurity removal port of the impurity removal pipe and the first filter port of the filter pipe. Iron filings and impurities can be intercepted by the filter screen 207. The filtered oil can flow out through the filter pipe through the second filter port to the circulation and recovery device. The circulation and recovery device can be configured to transport the lubricating oil flowing out from the second filter port back to the oil circuit pipe, thereby achieving the purpose of impurity removal. At the same time, the oil can be recycled, ensuring that the oil pressure in the oil circuit pipe 204 is further improved, thus enhancing the efficiency of automatic impurity removal.

[0104] In this embodiment of the invention, a circulation and recovery device is further configured for the self-cleaning device, and the second filter port of the filter pipe is connected to the circulation and recovery device. The circulation and recovery device is used to transport the lubricating oil flowing out from the second filter port to the oil circuit pipe, thereby achieving the purpose of removing impurities. At the same time, it creates conditions for transporting the lubricating oil flowing out from the second filter port to the oil circuit pipe, further improving the efficiency of automatic impurity removal.

[0105] refer to Figure 4 , Figure 4 This is a schematic diagram of a recycling device provided in an embodiment of the present invention. In an optional embodiment of the present invention, the recycling device includes an oil collection container 208, the top of which is connected to the second filter port. An oil level sensor 209 is provided on the inner side wall of the oil collection container. The oil level sensor is used to monitor the oil level in the oil collection container.

[0106] In practice, the oil circuit self-cleaning device can remove iron filings from the oil circuit pipe 204 through the following process.

[0107] The electromagnetic circuit can be an AC electromagnetic coil. When the oil in the oil pipe 204 is flowing, the AC electromagnetic coil, when energized, can adsorb impurities such as iron slag from the oil pipe 204 and draw these impurities from the first sedimentation tube port into the sedimentation tube 201, thus achieving a self-adsorption function. The current sensor 203 can be configured to acquire the real-time current value of the electromagnetic circuit and send it to the digital controller. The digital controller 206 can be configured to calculate the impedance value of the electromagnetic circuit based on the current value. When the impedance value is greater than a preset threshold, a power-off signal can be generated. This signal controls the electromagnetic circuit to de-energize, causing the impurities such as iron slag adsorbed in the oil pipe 204 to settle to the bottom of the sedimentation tube 204. After the control electromagnetic circuit is de-energized, the digital controller 206 can still generate a pulse signal and control the first electromagnetic check valve to open for a short time, thereby realizing the ejection of a very small amount of high-pressure oil from the sedimentation pipe 201. At the same time as the oil is ejected, the impurities that have settled to the bottom of the sedimentation pipe 204 are also carried out to the outside of the high-pressure oil circuit. The oil ejected from the high-pressure oil circuit can enter the filter pipe through the second impurity removal port of the impurity removal pipe and the first filter port of the filter pipe. Iron filings and impurities can be intercepted by the filter screen 207. The filtered oil can flow out to the oil collection container 208 through the second filter port of the filter pipe. The oil level sensor 209 can monitor the oil level in the oil collection container 208.

[0108] In an optional embodiment of the present invention, the oil collection container 208 is provided with an oil outlet at the bottom, and the circulation and recovery device includes an oil injection pump 210 and a second electromagnetic check valve 211 connected to the oil outlet;

[0109] The oil level sensor 209 is configured to send an oil level alarm message to the digital controller 206 when it detects that the oil level in the oil collection container is higher than a preset oil level threshold.

[0110] The digital controller is configured to:

[0111] In response to receiving the oil level alarm information, a first control signal and a second control signal are generated;

[0112] The first control signal is used to control the second electromagnetic check valve 211 to open;

[0113] The second control signal is used to control the oil pump 210 to draw the lubricating oil from the oil outlet and inject the lubricating oil into the oil pipe 204 through the second electromagnetic check valve 211.

[0114] In practice, the oil circuit self-cleaning device can remove iron filings from the oil circuit pipe 204 through the following process.

[0115] The electromagnetic circuit can be an AC electromagnetic coil. When the oil in the oil pipe 204 is flowing, the AC electromagnetic coil, when energized, can adsorb impurities such as iron slag in the oil pipe 204 and draw the impurities from the first sedimentation tube port into the sedimentation tube 201, thus achieving a self-adsorption function. The current sensor 203 can be configured to acquire the real-time current value of the electromagnetic circuit and send the real-time current value to the digital controller. The digital controller 206 can be configured to calculate the impedance value of the electromagnetic circuit based on the current value. When the impedance value is greater than a preset threshold, a power-off signal can be generated to control the electromagnetic circuit to de-energize, causing the impurities such as iron slag adsorbed in the oil pipe 204 to settle to the bottom of the sedimentation tube 204. After controlling the electromagnetic circuit to de-energize, the digital controller 206 can also generate a pulse signal and control the first electromagnetic check valve to open for a short time, thereby achieving a very small amount of high-pressure oil spraying out of the sedimentation tube 201. At the same time as the oil is sprayed out, it settles into the sedimentation tube 201. 4. Impurities at the bottom are carried out to the outside of the high-pressure oil circuit. For the oil sprayed out of the high-pressure oil circuit, it can enter the filter pipe through the second impurity removal port of the impurity removal pipe and the first filter port of the filter pipe. Iron filings and impurities can be intercepted by the filter screen 207. The filtered oil can flow out to the oil collection container 208 through the second filter port of the filter pipe. The oil level sensor 209 can monitor the oil level in the oil collection container 208. When the oil level sensor 209 detects that the oil level in the oil collection container is higher than the preset oil level threshold, it sends an oil level alarm message to the digital controller 206. The digital controller 206 can respond to the oil level alarm message by generating a first control signal and a second control signal. Based on the first control signal, it controls the second electromagnetic check valve 211 to open, and based on the second control signal, it controls the oil pump 210 to draw the lubricating oil from the oil outlet. The lubricating oil is then injected into the oil circuit pipe through the second electromagnetic check valve 211. This achieves the purpose of removing impurities. At the same time, the oil can be recycled, ensuring that the oil pressure in the oil pipe 204 further improves the efficiency of automatic impurity removal.

[0116] In this embodiment of the invention, an oil outlet is provided at the bottom of the oil collection container 208. The circulation and recovery device includes an oil injection pump 210 and a second electromagnetic check valve 211 connected to the oil outlet. The oil level sensor 209 is configured to send an oil level alarm message to the digital controller 206 when the oil level in the oil collection container is detected to be higher than a preset oil level threshold. The digital controller is configured to generate a first control signal and a second control signal in response to receiving the oil level alarm message. The first control signal is used to control the second electromagnetic check valve 211 to open. The second control signal is used to control the oil injection pump 210 to draw the lubricating oil from the oil outlet and inject the lubricating oil into the oil pipe 204 through the second electromagnetic check valve 211 to achieve the purpose of removing impurities. At the same time, the oil can be circulated and reused, ensuring that the oil pressure in the oil pipe 204 further improves the efficiency of automatic impurity removal.

[0117] In an optional embodiment of the present invention, the digital controller is configured to: after controlling the first electromagnetic check valve to open based on the pulse signal, generate an energizing signal again when it is determined that the first electromagnetic check valve is closed, so as to control the electromagnetic circuit to be energized. This enables the continued adsorption of impurities in the oil circuit after the impurity removal operation is completed, that is, to achieve cyclical execution of the impurity removal operation, continuously performing self-cleaning operations on the lubricating oil to ensure a good lubrication state. Moreover, the screw compressor does not need to be stopped during the entire self-cleaning and self-removal process, thus improving the operating efficiency of the screw compressor.

[0118] To enable those skilled in the art to better understand the embodiments of the present invention, an example is used below to illustrate the embodiments of the present invention.

[0119] refer to Figure 5 and Figure 6 , Figure 5 This is a schematic diagram of the structure of a screw compressor provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of another oil circuit self-cleaning device provided in an embodiment of the present invention.

[0120] The screw compressor may be equipped with an oil circuit self-cleaning device 300. In specific implementation, the oil circuit self-cleaning device 300 can remove iron filings in the oil circuit pipe 304 through the following process.

[0121] The electromagnetic circuit of the electromagnetic adsorption device 302 can be an AC electromagnetic coil. When the oil in the oil pipe 304 is flowing, the AC electromagnetic coil, when energized, can adsorb impurities such as iron slag in the oil pipe 304 and draw the impurities from the first sedimentation tube port into the sedimentation tube 301, thus achieving a self-adsorption function. The current sensor 303 can be configured to acquire the real-time current value of the electromagnetic circuit and send the real-time current value to the digital controller. The digital controller 306 can be configured to calculate the impedance value of the electromagnetic circuit based on the current value. When the impedance value is greater than a preset threshold, a power-off signal can be generated to control the electromagnetic circuit to de-energize, causing the impurities such as iron slag adsorbed in the oil pipe 304 to settle to the bottom of the sedimentation tube 304. After controlling the electromagnetic circuit to de-energize, the digital controller 306 can also generate a pulse signal and control the first electromagnetic check valve in the impurity removal pipe 305 to open for a short time, thereby achieving a very small amount of high-pressure oil spraying out of the sedimentation tube 301. At the same time as the oil is sprayed out, the sediment is also drawn out. Impurities deposited at the bottom of the sedimentation pipe 304 are carried out to the outside of the high-pressure oil circuit. For the oil sprayed out of the high-pressure oil circuit, it can enter the filter pipe through the second impurity removal port of the impurity removal pipe and the first filter port of the filter pipe. Iron filings and impurities can be intercepted by the filter screen 307. The filtered oil can flow out through the filter pipe and the second filter port to the oil collection container 308. The oil level sensor 309 can monitor the oil level in the oil collection container 308. When the oil level sensor 309 detects that the oil level in the oil collection container is higher than the preset oil level threshold, it sends an oil level alarm message to the digital controller 306. The digital controller 306 can respond to the oil level alarm message by generating a first control signal and a second control signal. Based on the first control signal, it controls the second electromagnetic check valve 311 to open, and based on the second control signal, it controls the oil pump 310 to draw the lubricating oil from the oil outlet. The lubricating oil is then injected into the oil circuit pipe 304 through the second electromagnetic check valve 311. This achieves the purpose of removing impurities. At the same time, the oil can be recycled, ensuring that the oil pressure in the oil pipe 304 further improves the efficiency of automatic impurity removal.

[0122] like Figure 7 As shown, Figure 7 The following is a flowchart illustrating the steps of a self-cleaning method for oil passages provided in an embodiment of the present invention, which may specifically include the following steps:

[0123] Step 701: Generate an energizing signal to control the electromagnetic circuit to power on;

[0124] Step 702: Receive the real-time current value and determine the impedance value of the electromagnetic circuit based on the current value;

[0125] Step 703: In response to the impedance value being greater than a preset threshold, a power-off signal is generated to control the electromagnetic circuit to be powered off;

[0126] Step 704: After the electromagnetic circuit is de-energized, a purification signal is generated to control the purification device to adsorb impurities in the precipitation tube.

[0127] In practical applications, embodiments of the present invention can be applied to the digital controller of a screw compressor. The screw compressor is equipped with an oil circuit pipe. The oil circuit self-cleaning device includes at least one sedimentation tube, an electromagnetic adsorption device, and a cleanup device for the sedimentation tube. The electromagnetic circuit of the electromagnetic adsorption device is wound around the sedimentation tube. A connection port is provided on the side of the oil circuit pipe. The first sedimentation tube port of the sedimentation tube is connected to the connection port. The second sedimentation tube port of the sedimentation tube is connected to the cleanup device.

[0128] It should be noted that, for the sake of simplicity, the method embodiments are all described as a series of actions. However, those skilled in the art should understand that the embodiments of the present invention are not limited to the described order of actions, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0129] Reference Figure 8 The diagram illustrates a structural block diagram of an oil circuit self-cleaning system provided in an embodiment of the present invention, which may specifically include the following modules:

[0130] The power-on signal generation module 801 is used to generate a power-on signal to control the electromagnetic circuit to be powered on.

[0131] The real-time current value receiving module 802 is used to receive real-time current values ​​and determine the impedance value of the electromagnetic circuit based on the current values.

[0132] The power failure signal generation module 803 is used to generate a power failure signal in response to the impedance value being greater than a preset threshold, so as to control the electromagnetic circuit to be powered off.

[0133] The impurity removal signal generation module 804 is used to generate an impurity removal signal after the control electromagnetic circuit is de-energized, so as to control the impurity removal device to adsorb impurities in the precipitation tube.

[0134] As the device embodiment is basically similar to the method embodiment, the description is relatively simple, and relevant parts can be found in the description of the method embodiment.

[0135] In addition, this invention also provides an electronic device, including: a processor, a memory, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, it implements the various processes of the above-described oil circuit self-cleaning method embodiments and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0136] This invention also provides a computer-readable storage medium storing a computer program. When executed by a processor, the computer program implements the various processes of the above-described oil circuit self-cleaning method embodiments and achieves the same technical effects. To avoid repetition, it will not be described again here. The computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0137] Figure 9 A schematic diagram of the hardware structure of an electronic device for implementing various embodiments of the present invention.

[0138] The electronic device 900 includes, but is not limited to, components such as: a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909, a processor 910, and a power supply 911. Those skilled in the art will understand that... Figure 9 The electronic device structures shown are not intended to limit the electronic device. An electronic device may include more or fewer components than shown, or combine certain components, or have different component arrangements. In embodiments of the present invention, the electronic device includes, but is not limited to, mobile phones, tablet computers, laptops, PDAs, in-vehicle terminals, wearable devices, and pedometers.

[0139] It should be understood that, in this embodiment of the invention, the radio frequency unit 901 can be used for receiving and transmitting signals during information transmission or calls. Specifically, it receives downlink data from the base station and processes it with the processor 910; additionally, it transmits uplink data to the base station. Typically, the radio frequency unit 901 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc. Furthermore, the radio frequency unit 901 can also communicate with networks and other devices through a wireless communication system.

[0140] Electronic devices provide users with wireless broadband internet access through network module 902, such as helping users send and receive emails, browse web pages, and access streaming media.

[0141] The audio output unit 903 can convert audio data received by the radio frequency unit 901 or the network module 902 or stored in the memory 909 into audio signals and output them as sound. Furthermore, the audio output unit 903 can also provide audio output related to specific functions performed by the electronic device 900 (e.g., call signal reception sound, message reception sound, etc.). The audio output unit 903 includes a speaker, a buzzer, and a receiver, etc.

[0142] Input unit 904 is used to receive audio or video signals. Input unit 904 may include a graphics processing unit (GPU) 9041 and a microphone 9042. The GPU 9041 processes image data of still images or videos acquired by an image capture device (such as a camera) in video capture mode or image capture mode. The processed image frames can be displayed on display unit 906. The image frames processed by GPU 9041 can be stored in memory 909 (or other storage medium) or transmitted via radio frequency unit 901 or network module 902. Microphone 9042 can receive sound and process such sound into audio data. The processed audio data can be converted into a format that can be transmitted to a mobile communication base station via radio frequency unit 901 in telephone call mode.

[0143] The electronic device 900 also includes at least one sensor 905, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor. The ambient light sensor can adjust the brightness of the display panel 9061 according to the ambient light level, and the proximity sensor can turn off the display panel 9061 and / or backlight when the electronic device 900 is moved to the ear. As a type of motion sensor, an accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes). When stationary, it can detect the magnitude and direction of gravity and can be used to identify the posture of the electronic device (such as landscape / portrait switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc. The sensor 905 may also include a fingerprint sensor, pressure sensor, iris sensor, molecular sensor, gyroscope, barometer, hygrometer, thermometer, infrared sensor, etc., which will not be described in detail here.

[0144] The display unit 906 is used to display information input by the user or information provided to the user. The display unit 906 may include a display panel 9061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0145] User input unit 907 can be used to receive input numerical or character information, and to generate key signal inputs related to user settings and function control of electronic devices. Specifically, user input unit 907 includes a touch panel 9071 and other input devices 9072. Touch panel 9071, also known as a touch screen, can collect touch operations performed by the user on or near it (such as operations performed by the user using a finger, stylus, or any suitable object or accessory on or near touch panel 9071). Touch panel 9071 may include two parts: a touch detection device and a touch controller. The touch detection device detects the user's touch position and the signal generated by the touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, and sends it to processor 910, which receives and executes commands from processor 910. In addition, touch panel 9071 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. Besides touch panel 9071, user input unit 907 may also include other input devices 9072. Specifically, other input devices 9072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, joysticks, etc., which will not be described in detail here.

[0146] Furthermore, the touch panel 9071 can cover the display panel 9061. When the touch panel 9071 detects a touch operation on or near it, it transmits the information to the processor 910 to determine the type of touch event. Subsequently, the processor 910 provides corresponding visual output on the display panel 9061 based on the type of touch event. Although in Figure 9 In this embodiment, the touch panel 9071 and the display panel 9061 are two independent components to realize the input and output functions of the electronic device. However, in some embodiments, the touch panel 9071 and the display panel 9061 can be integrated to realize the input and output functions of the electronic device. The specific implementation is not limited here.

[0147] Interface unit 908 serves as an interface for connecting external devices to electronic device 900. For example, external devices may include a wired or wireless headphone port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, and so on. Interface unit 908 can be used to receive input from external devices (e.g., data, power, etc.) and transmit the received input to one or more components within electronic device 900, or it can be used to transmit data between electronic device 900 and external devices.

[0148] The memory 909 can be used to store software programs and various data. The memory 909 may primarily include a program storage area and a data storage area. The program storage area may store the operating system, applications required for at least one function (such as sound playback, image playback, etc.), etc.; the data storage area may store data created based on the use of the mobile phone (such as audio data, phonebook, etc.). Furthermore, the memory 909 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0149] The processor 910 is the control center of the electronic device. It connects various parts of the electronic device via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 909, and by calling data stored in the memory 909, it performs various functions and processes data, thereby providing overall monitoring of the electronic device. The processor 910 may include one or more processing units; preferably, the processor 910 may integrate an application processor and a modem processor. The application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 910.

[0150] The electronic device 900 may also include a power supply 911 (such as a battery) that supplies power to various components. Preferably, the power supply 911 is logically connected to the processor 910 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system.

[0151] In addition, the electronic device 900 includes some functional modules not shown, which will not be described in detail here.

[0152] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0153] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0154] like Figure 10 As shown, in another embodiment of the present invention, a computer-readable storage medium 1001 is also provided, which stores instructions that, when executed on a computer, cause the computer to perform the oil circuit self-cleaning method described in the above embodiment.

[0155] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

[0156] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed in this invention can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0157] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0158] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0159] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0160] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0161] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0162] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A self-cleaning device for oil circuits, characterized in that, An oil circuit pipe is used in a screw compressor. The oil circuit pipe is the main oil circuit, and the oil circuit self-cleaning device constitutes a branch oil circuit for the main oil circuit. The main oil circuit is a high-pressure oil circuit. The oil circuit self-cleaning device includes at least one sedimentation pipe, an electromagnetic adsorption device, and a cleanup device for the sedimentation pipe. The electromagnetic circuit of the electromagnetic adsorption device is wound around the precipitation tube; The screw compressor is equipped with an oil circuit pipe; The oil pipe has a connection port on its side, and the first sedimentation pipe port of the sedimentation pipe is connected to the connection port; the second sedimentation pipe port of the sedimentation pipe is connected to the impurity removal device. The electromagnetic adsorption device includes a current sensor connected to the electromagnetic circuit, and the impurity removal device includes a digital controller. The current sensor is configured to acquire the real-time current value of the electromagnetic circuit and send the real-time current value to the digital controller. The impurity removal device includes an impurity removal pipe and a first electromagnetic check valve disposed in the impurity removal pipe; the first impurity removal port of the impurity removal pipe is connected to the port of the second sedimentation tube; The digital controller is configured to: The impedance value of the electromagnetic circuit is determined based on the current value; In response to the impedance value being greater than a preset threshold, a power-off signal is generated to control the electromagnetic circuit to be powered off; After the electromagnetic circuit is de-energized, a pulse signal is generated to control the opening of the first electromagnetic check valve. The amplitude of the pulse signal is the value of the pulse signal in the high-level state; the width of the pulse signal is the duration of the pulse signal in the high-level state; the rise time of the pulse signal is the time required for the pulse signal to rise from the initial value to the final value; the fall time of the pulse signal is the time required for the pulse signal to fall from the final value to the initial value. The repetition frequency of the pulse signal is the number of times the pulse signal appears per unit time; the duty cycle of the pulse signal is the ratio of the time the pulse signal occupies in the high-level state to the total time in one cycle. The impurity removal device includes a filter pipe, and the second impurity removal port of the impurity removal pipe is connected to the first filter port of the filter pipe; a filter screen is provided inside the impurity removal pipe.

2. The oil circuit self-cleaning device according to claim 1, characterized in that, The self-cleaning device also includes a circulation and recovery device, and the second filter port of the filter pipe is connected to the circulation and recovery device; the circulation and recovery device is used to transport the lubricating oil flowing out from the second filter port to the oil pipe.

3. The oil circuit self-cleaning device according to claim 2, characterized in that, The recycling device includes an oil collection container, the top of which is connected to the second filter port; an oil level sensor is provided on the inner wall of the oil collection container; the oil level sensor is used to monitor the oil level in the oil collection container.

4. The oil circuit self-cleaning device according to claim 3, characterized in that, The oil collection container has an oil outlet at the bottom, and the circulation and recovery device includes an oil injection pump and a second electromagnetic check valve connected to the oil outlet. The oil level sensor is configured to send an oil level alarm message to the digital controller when it detects that the oil level in the oil collection container is higher than a preset oil level threshold. The digital controller is configured to: In response to receiving the oil level alarm information, a first control signal and a second control signal are generated; The first control signal is used to control the second electromagnetic check valve to open; The second control signal is used to control the oil pump to draw the lubricating oil from the oil outlet and inject the lubricating oil into the oil pipe through the second electromagnetic check valve.

5. The oil circuit self-cleaning device according to claim 1, characterized in that, The digital controller is configured to: After the first electromagnetic check valve is opened based on the pulse signal, when it is determined that the first electromagnetic check valve is closed, an energizing signal is generated again to control the electromagnetic circuit to be powered on.

6. A method for self-cleaning oil passages, characterized in that, A digital controller for a screw compressor, the screw compressor being equipped with an oil circuit, the oil circuit self-cleaning device including at least one settling tube, an electromagnetic adsorption device, and a cleanup device for the settling tube; the electromagnetic circuit of the electromagnetic adsorption device is wound around the settling tube; a connection port is provided on the side of the oil circuit, a first settling tube port of the settling tube is connected to the connection port; a second settling tube port of the settling tube is connected to the cleanup device, the oil circuit is a main oil circuit, the oil circuit self-cleaning device constitutes a branch oil circuit for the main oil circuit, the main oil circuit is a high-pressure oil circuit, the electromagnetic adsorption device includes a current sensor connected to the electromagnetic circuit, the cleanup device includes a digital controller, the current sensor is configured to acquire the real-time current value of the electromagnetic circuit and send the real-time current value to the digital controller; the cleanup device includes a cleanup pipe and a first electromagnetic check valve disposed in the cleanup pipe; a first cleanup port of the cleanup pipe is connected to the second settling tube port; the method is applied to the digital controller, the method including: Generate an energizing signal to control the electromagnetic circuit to power on; Receive real-time current values ​​and determine the impedance value of the electromagnetic circuit based on the current values; In response to the impedance value being greater than a preset threshold, a power-off signal is generated to control the electromagnetic circuit to be powered off; After the electromagnetic circuit is de-energized, a pulse signal is generated to control the opening of the first electromagnetic check valve. The amplitude of the pulse signal is its value in the high-level state; the width of the pulse signal is the duration of the high-level state; the rise time of the pulse signal is the time required for the pulse signal to rise from its initial value to its final value; the fall time of the pulse signal is the time required for the pulse signal to fall from its final value to its initial value; the repetition frequency of the pulse signal is the number of times the pulse signal occurs per unit time; the duty cycle of the pulse signal is the ratio of the time the pulse signal occupies in the high-level state to the total time within one cycle. The impurity removal device includes a filter pipe, and the second impurity removal port of the impurity removal pipe is connected to the first filter port of the filter pipe; a filter screen is provided inside the impurity removal pipe.

7. A self-cleaning system for oil circuits, characterized in that, A digital controller for a screw compressor, the screw compressor being equipped with an oil circuit, the oil circuit self-cleaning device including at least one settling tube, an electromagnetic adsorption device, and a cleanup device for the settling tube; the electromagnetic circuit of the electromagnetic adsorption device is wound around the settling tube; a connection port is provided on the side of the oil circuit, a first settling tube port of the settling tube is connected to the connection port; a second settling tube port of the settling tube is connected to the cleanup device, the oil circuit is the main oil circuit, the oil circuit self-cleaning device constitutes a branch oil circuit for the main oil circuit, the main oil circuit is a high-pressure oil circuit, the electromagnetic adsorption device includes a current sensor connected to the electromagnetic circuit, the cleanup device includes a digital controller, the current sensor is configured to acquire the real-time current value of the electromagnetic circuit and send the real-time current value to the digital controller; the cleanup device includes a cleanup pipe and a first electromagnetic check valve disposed in the cleanup pipe; a first cleanup port of the cleanup pipe is connected to the second settling tube port; the system is applied to the digital controller, the system including: A power-on signal generation module is used to generate a power-on signal to control the electromagnetic circuit to be powered on; A real-time current value receiving module is used to receive real-time current values ​​and determine the impedance value of the electromagnetic circuit based on the current values. A power-off signal generation module is used to generate a power-off signal in response to the impedance value being greater than a preset threshold, so as to control the electromagnetic circuit to be powered off. The noise removal signal generation module is used to generate a pulse signal after the control electromagnetic circuit is de-energized, so as to control the opening of the first electromagnetic check valve; The amplitude of the pulse signal is its value in the high-level state; the width of the pulse signal is the duration of the high-level state; the rise time of the pulse signal is the time required for the pulse signal to rise from its initial value to its final value; the fall time of the pulse signal is the time required for the pulse signal to fall from its final value to its initial value; the repetition frequency of the pulse signal is the number of times the pulse signal occurs per unit time; the duty cycle of the pulse signal is the ratio of the time the pulse signal occupies in the high-level state to the total time within one cycle. The impurity removal device includes a filter pipe, and the second impurity removal port of the impurity removal pipe is connected to the first filter port of the filter pipe; a filter screen is provided inside the impurity removal pipe.

8. An electronic device, characterized in that, It includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; The memory is used to store computer programs; When the processor executes a program stored in the memory, it implements the method as described in claim 6.

9. A computer-readable storage medium having instructions stored thereon that, when executed by one or more processors, cause the processors to perform the method of claim 6.

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