A sewage discharge system and method

Abstract

The present invention discloses a sewage discharge system, which is arranged on an air filter device and relates to the field of automatic control technology. The system specifically includes a current on-off controller, a sewage pipe, and an anti-drowning valve outside the air filter device, as well as an electromagnet and a permanent magnet inside the air filter device. The current on-off controller is used to respond to a current on-off control instruction to control the conduction between the positive pole of the controller and the negative pole of the controller so as to energize the electromagnet. The electromagnet is used to adsorb with the permanent magnet when energized. The permanent magnet is used to drive the anti-drowning valve to move upward during the adsorption process with the electromagnet. The sewage pipe is used to discharge dirty substances inside the air filter device out of the air filter device through a sewage outlet. The anti-drowning valve is used to block in the sewage pipe during the upward movement to prevent the air filter device from drowning. When a car is in a wading scene, the present invention can reduce the risk of drowning of the air filter device, thereby ensuring the driving safety and stability of the car.

Description

Technical Field

[0001] The present invention relates to the field of automatic control technology, and in particular to a sewage discharge system and method. Background Art

[0002] Air filtration devices, also known as air filters, are generally used in cleanrooms, clean factories, laboratories, and cleanrooms, as well as for dust prevention in electronic, mechanical, and communication equipment. With the development of modern automotive technology, air filtration devices have also been widely used in automobiles, ensuring the delivery of clean, dry, and sufficient air to the vehicle's engine.

[0003] To meet clean air delivery requirements, air filters are typically equipped with a sewage outlet. However, existing technologies lack anti-drowning features for these outlets. This poses a risk of drowning when the vehicle is in water, impacting the vehicle's driving safety and stability. Summary of the Invention

[0004] The present invention provides a sewage discharge system and method to solve the problem in the prior art that there is a lack of an anti-drowning structure for the sewage outlet of an air filter device, which leads to the risk of water entering the air filter device and affects the driving safety and stability of the vehicle.

[0005] According to one aspect of the present invention, there is provided a sewage discharge system, which is arranged on an air filter device and includes a current on-off controller, a sewage discharge pipe, and an anti-drowning valve arranged outside the air filter device, and an electromagnet and a permanent magnet arranged inside the air filter device; a positive pole of the current on-off controller is connected to a first magnetic pole of the electromagnet by a wire, and a negative pole of the current on-off controller is connected to a second magnetic pole of the electromagnet by a wire;

[0006] The current on-off controller is used to respond to the current on-off control instruction and control the conduction between the positive pole of the controller and the negative pole of the controller so that the electromagnet is energized;

[0007] The electromagnet is arranged directly above the permanent magnet and is used to attract the permanent magnet when powered;

[0008] The permanent magnet is arranged just above the anti-drowning valve and is connected to the anti-drowning valve, and is used to drive the anti-drowning valve to move upwards during the process of being attracted by the electromagnet;

[0009] The sewage discharge pipe is arranged directly below the sewage discharge port of the air filter device and is in contact with the sewage discharge port, and is used to discharge the dirty substances inside the air filter device out of the air filter device through the sewage discharge port;

[0010] The anti-drowning valve is arranged just below the sewage pipe and is used to be blocked in the sewage pipe during the upward movement to prevent the air filter device from drowning.

[0011] According to another aspect of the present invention, a sewage discharge method is provided, which is performed by a current on-off controller in a sewage discharge system according to any one of the present inventions, wherein the sewage discharge system is provided on an air filter device and includes a current on-off controller, a sewage discharge pipe, and an anti-drowning valve provided outside the air filter device, and an electromagnet and a permanent magnet provided inside the air filter device; a positive pole of the current on-off controller is connected to a first magnetic pole of the electromagnet by a wire, and a negative pole of the current on-off controller is connected to a second magnetic pole of the electromagnet by a wire, and the method includes:

[0012] Obtaining a current on-off control instruction and determining a control intention of the current on-off control instruction;

[0013] When the control intention is to conduct current, controlling the positive pole of the controller and the negative pole of the controller to conduct, so that the electromagnet is energized;

[0014] The electromagnet is attracted to the permanent magnet when powered, and the permanent magnet drives the anti-drowning valve to move upward during the adsorption process. The anti-drowning valve is blocked in the sewage pipe during the upward movement to prevent the air filter device from drowning.

[0015] The sewage discharge pipe is used to discharge the dirty substances inside the air filter device out of the air filter device through the sewage discharge port of the air filter device.

[0016] The technical solution of the embodiment of the present invention is to respond to the current on-off control instruction through the current on-off controller, control the conduction between the positive pole of the controller and the negative pole of the controller, so that the electromagnet is energized. The electromagnet is adsorbed by the permanent magnet when energized. The permanent magnet drives the anti-drowning valve to move upward during the adsorption with the electromagnet. The anti-drowning valve is blocked in the sewage pipe during the upward movement to prevent the air filter device from drowning, thereby achieving the effect of actively controlling the anti-drowning valve to be blocked in the sewage pipe to prevent the air filter device from drowning. Therefore, when the car is in a wading scene, the risk of water entering the air filter device can be reduced, thereby ensuring the driving safety and stability of the car.

[0017] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 is a schematic structural diagram of some sewage discharge systems disclosed according to an embodiment of the present invention;

[0020] Figure 2 is a schematic structural diagram of another sewage discharge system disclosed according to an embodiment of the present invention;

[0021] Figure 3 This is a flow chart of some sewage discharge methods disclosed according to embodiments of the present invention. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0023] It should be noted that the terms "primary", "secondary", "tertiary", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or are inherent to these processes, methods, products or apparatus.

[0024] Figure 1 This is a structural schematic diagram of some sewage systems disclosed according to an embodiment of the present invention, which can be used to actively prevent the air filter device from drowning when the car is in a wading scene.

[0025] like Figure 1As shown, the sewage discharge system disclosed in this embodiment is arranged on the air filtering device 100, including a current on-off controller 101, a sewage discharge pipe 102 and an anti-drowning valve 103 arranged outside the air filtering device 100, and an electromagnet 104 and a permanent magnet 105 arranged inside the air filtering device 100.

[0026] Among them, the air filter device 100 represents any filter device with the function of cleaning and drying air. For example, it can be an air filter installed inside a car to filter air for the car engine before the air flows into the car engine. This embodiment does not limit the specific application scenario of the air filter device.

[0027] A wire is connected between the positive pole of the current on-off controller 101 and the first magnetic pole of the electromagnet 104, and a wire is connected between the negative pole of the current on-off controller 101 and the second magnetic pole of the electromagnet 104; the current on-off controller 101 is used to respond to the current on-off control instruction, control the conduction between the positive pole and the negative pole of the controller, so that the electromagnet 104 is energized.

[0028] Specifically, the current on-off controller 101 is connected to a power supply, and is provided with a positive electrode and a negative electrode. Furthermore, the current on-off controller 101 can respond to a current on-off control instruction sent by a user and actively control the conduction or disconnection between the positive electrode and the negative electrode. It is understood that when the positive electrode and the negative electrode are conductive, current can flow between them; correspondingly, when the positive electrode and the negative electrode are disconnected, current cannot flow between them.

[0029] Furthermore, the electromagnet 104 is composed of a magnetic core and a coil, and is a device that can generate a magnetic field when current flows through the coil. Since a wire connects the first magnetic pole of the electromagnet 104 to the positive pole of the controller, and a wire connects the second magnetic pole of the electromagnet 104 to the negative pole of the controller, when the positive pole and the negative pole of the controller are conductive, a loop can be formed between the positive pole and the negative pole of the controller, allowing current to flow through the electromagnet 104, and the electromagnet 104 can generate a magnetic field. Correspondingly, when the positive pole and the negative pole of the controller are disconnected, a loop cannot be formed between the positive pole and the negative pole of the controller, and the electromagnet 104, so that current cannot flow through the electromagnet 104, and the electromagnet 104 cannot generate a magnetic field. The first magnetic pole and the second magnetic pole are different, and this embodiment does not limit the specific magnetic poles represented by the first magnetic pole and the second magnetic pole.

[0030] The electromagnet 104 is disposed directly above the permanent magnet 105 and is configured to be attracted to the permanent magnet 105 when powered.

[0031] Specifically, permanent magnet 105 represents a magnet that can maintain its magnetism for a long time, including but not limited to natural magnets (such as magnetite) and artificial magnets (such as aluminum nickel cobalt alloy). The magnetism of the two poles of permanent magnet 105 is opposite to the magnetism of the two poles of magnet 104. That is, when the first magnetic pole of electromagnet 104 is the north pole and the second magnetic pole is the south pole, then the magnetic pole directly below the first magnetic pole of permanent magnet 105 is the south pole, and the magnetic pole directly below the second magnetic pole is the north pole; correspondingly, when the first magnetic pole of electromagnet 104 is the south pole and the second magnetic pole is the north pole, then the magnetic pole directly below the first magnetic pole of permanent magnet 105 is the north pole, and the magnetic pole directly below the second magnetic pole is the south pole. This ensures that when electromagnet 104 is energized to generate a magnetic field, a magnetic attraction is generated between electromagnet 104 and permanent magnet 105 to ensure adsorption between electromagnet 104 and permanent magnet 105.

[0032] The permanent magnet 105 is disposed directly above the anti-drowning valve 103 and is connected to the anti-drowning valve 103 , and is used to drive the anti-drowning valve 103 to move upwards during the process of being adsorbed by the electromagnet 104 .

[0033] Specifically, the anti-drowning valve 103 represents a waterproof plug with inherent waterproof properties, which can be used to block the sewage pipe 102 to prevent sewage outside the air filter device 100 from reversely entering the air filter device 100 through the sewage pipe 102. The anti-drowning valve 103 is located directly below the permanent magnet 105 and is structurally connected to the anti-drowning valve 103. When the permanent magnet 105 and the electromagnet 104 are attracted by magnetic attraction, the permanent magnet 105 produces an upward displacement. At the same time, the permanent magnet 105 drives the anti-drowning valve 103 to also move upward, generating a corresponding displacement.

[0034] The drain pipe 102 is disposed directly below the drain outlet 106 of the air filter device 100 and is in close contact with the drain outlet 106 , and is used to discharge dirt inside the air filter device 100 out of the air filter device 100 through the drain outlet 106 .

[0035] Specifically, dirt, such as sewage or dust, present in the air filter device 100 can be discharged from the air filter device 100 through a drain port 106 disposed at the bottom of the air filter device 100 to ensure the cleanliness of the interior of the air filter device 100. The drain pipe 102 is a conduit for guiding the dirt from the drain port 106 to a specific area, such as a specific dirt recovery device, or directly to the outside of the vehicle, thereby preventing the dirt from being discharged directly from the drain port 106 and affecting the cleanliness of other areas of the vehicle or even affecting the driving safety of the vehicle.

[0036] The anti-drowning valve 103 is disposed directly below the sewage pipe 102 and is configured to be blocked in the sewage pipe 102 during the upward movement to prevent the air filter device 100 from drowning.

[0037] It can be understood that since a sewage outlet 106 is provided at the bottom of the air filter device 100, when there is dirt in the air filter device 100, the dirt can be discharged from the air filter device 100 through the sewage outlet 106 and the sewage pipe 102. At the same time, if the car is in a wading scene, the external sewage can also enter the air filter device 100 in the reverse direction through the sewage pipe 102 and the sewage outlet 106.

[0038] Therefore, when the car has entered or is about to enter a wading scene, the user actively sends a current on-off control instruction to the current on-off controller 101. The current on-off controller 101 controls the conduction between the positive and negative poles of the controller, so that the electromagnet 104 is energized. After the electromagnet 104 is energized, it generates a magnetic field and generates a magnetic attraction between it and the permanent magnet 105, thereby adsorbing it to the permanent magnet 105. The permanent magnet 105 drives the anti-drowning valve 103 to move upward during the adsorption process with the electromagnet 104. In this embodiment, the minimum cross-sectional area of ​​the sewage pipe 102 is smaller than the maximum cross-sectional area of ​​the anti-drowning valve 103. Therefore, when the anti-drowning valve 103 moves upward, it will enter the sewage pipe 102, squeeze it, and eventually become blocked in the sewage pipe 102. Since the anti-drowning valve 103 itself has a waterproof property, even if the car enters a wading scene, external sewage cannot reversely enter the air filter device 100 through the sewage pipe 102 and the sewage outlet 106.

[0039] When the car has escaped the wading scene, the user actively sends a current on-off control instruction to the current on-off controller 101 again. The current on-off controller 101 controls the disconnection between the positive and negative poles of the controller, so that the electromagnet 104 is powered off. After the electromagnet 104 is powered off, the magnetic field disappears, and the magnetic attraction between the electromagnet 104 and the permanent magnet 105 is lost. The permanent magnet 105 is no longer attracted to the electromagnet 104 and moves downward under the action of gravity, and the anti-drowning valve 103 generates a downward force to break free from the squeeze between the drain pipe 102 and escape from the drain pipe 102. At this time, the dirt in the air filter device 100 can be discharged from the air filter device 100 through the drain port 106 and the drain pipe 102.

[0040] The technical solution of the embodiment of the present invention is to respond to the current on-off control instruction through the current on-off controller, control the conduction between the positive pole of the controller and the negative pole of the controller, so that the electromagnet is energized, and the electromagnet is adsorbed with the permanent magnet when energized. The permanent magnet drives the anti-drowning valve to move upward in the process of adsorption with the electromagnet. The anti-drowning valve is blocked in the sewage pipe during the upward movement to prevent the air filter device from drowning, thereby achieving the effect of actively controlling the anti-drowning valve to be blocked in the sewage pipe to prevent the air filter device from drowning. Therefore, when the car is in a wading scene, the risk of water ingress into the air filter device can be reduced, thereby ensuring the driving safety and stability of the car; moreover, it can also avoid the problem of shortening the maintenance life of the air filter device due to water ingress, thereby improving the durability of the air filter device.

[0041] Figure 2 It is a structural schematic diagram of other sewage discharge systems disclosed according to an embodiment of the present invention, which is further optimized and expanded based on the above technical solution and can be combined with the above-mentioned various optional structural forms.

[0042] like Figure 2 As shown, the sewage discharge system disclosed in this embodiment may include:

[0043] In addition to the above embodiment, the air filter device 100 further includes a liquid level intelligent sensor 107 disposed at the bottom thereof. A wire connects the positive electrode of the liquid level intelligent sensor 107 to the first magnetic pole of the electromagnet 104, and a wire connects the negative electrode of the liquid level intelligent sensor 107 to the second magnetic pole of the electromagnet 104. The liquid level intelligent sensor 107 is configured to conduct the positive and negative electrodes of the sensor when immersed in water, thereby energizing the electromagnet 104.

[0044] Specifically, the liquid level intelligent sensor 107 is connected to a power supply and is made of a special material that conducts electricity in water. That is, only when the liquid level intelligent sensor 107 is immersed in water will the positive electrode and the negative electrode of the sensor be connected to form a current path. When the liquid level intelligent sensor 107 is in air or oil, the positive electrode and the negative electrode of the sensor are disconnected and no current path can be formed.

[0045] When the car is in a wading environment and the liquid level intelligent sensor 107 is immersed in external sewage, the positive pole of the sensor and the negative pole of the sensor are connected, and the electromagnet 104 is energized. After the electromagnet 104 is energized, a magnetic field is generated, and a magnetic attraction is generated between it and the permanent magnet 105, thereby adsorbing it to the permanent magnet 105. In the process of adsorption with the electromagnet 104, the permanent magnet 105 drives the anti-drowning valve 103 to move upward. When the anti-drowning valve 103 moves upward, it will enter the sewage pipe 102, and will be squeezed between it and the sewage pipe 102 and eventually blocked in the sewage pipe 102. Since the anti-drowning valve 103 itself has waterproof properties, even if the car enters a wading scene, external sewage cannot enter the air filter device 100 through the sewage pipe 102 and the sewage outlet 106.

[0046] When the car leaves the water, the liquid level intelligent sensor 107 is no longer immersed in the sewage, and the positive and negative electrodes of the sensor are disconnected, causing the electromagnet 104 to be powered off. After the electromagnet 104 is powered off, the magnetic field disappears, and the magnetic attraction between the electromagnet 104 and the permanent magnet 105 is lost. The permanent magnet 105 is no longer attracted to the electromagnet 104 and moves downward under the action of gravity, and the anti-drowning valve 103 generates a downward force to break free from the squeeze between the drain pipe 102 and escape from the drain pipe 102. At this time, the dirt in the air filter device 100 can be discharged from the air filter device 100 through the drain port 106 and the drain pipe 102.

[0047] By arranging a liquid level intelligent sensor at the bottom of the air filter device, a wire is connected between the positive pole of the liquid level intelligent sensor and the first magnetic pole of the electromagnet, and a wire is connected between the negative pole of the liquid level intelligent sensor and the second magnetic pole of the electromagnet. When the liquid level intelligent sensor is immersed in water, the positive pole and the negative pole of the sensor are connected to energize the electromagnet, and finally the anti-drowning valve can be blocked in the sewage pipe to prevent the air filter device from drowning, thereby achieving the effect of automatically taking waterproof measures when the air filter device is at risk of drowning, avoiding the problem of drowning risk of the air filter device if the user forgets to actively take waterproof measures, and increasing the redundancy of the air filter device in preventing drowning.

[0048] On the basis of the above embodiment, it also includes a first-level valve chamber 108 arranged directly below the sewage pipe 102 and in contact with the sewage pipe 102. The anti-drowning valve 103 is arranged in the first-level valve chamber 108. The anti-drowning valve 103 is a float valve and is connected to the permanent magnet 105 through a flexible connection line; the first-level valve chamber 108 is used to continue to discharge the dirty substances discharged from the sewage pipe 102; the anti-drowning valve 103 is also used to float to the sewage pipe 102 and block the sewage pipe 102 in the case of immersion in water, so as to prevent the air filter device 100 from drowning.

[0049] Specifically, the anti-drowning valve 103 can be set as a float valve. When the car is in a wading environment, external sewage is immersed in the first-level valve chamber 108. Since the anti-drowning valve 103 is connected to the permanent magnet 105 through a flexible connection line, when the water level of the external sewage continues to rise, the anti-drowning valve 103 will continue to move upward under the influence of the buoyancy of the external sewage until the anti-drowning valve 103 is blocked in the sewage pipe 102. Since the anti-drowning valve 103 itself has waterproof properties, the external sewage cannot enter the air filter device 100 through the sewage pipe 102 and the sewage outlet 106.

[0050] As the water level of the external sewage continues to drop, the anti-drowning valve 103 will continue to move downward until it is separated from the sewage pipe 102. At this time, the dirt in the air filter device 100 can be discharged from the air filter device 100 through the sewage outlet 106, the sewage pipe 102 and the first-level valve chamber 108.

[0051] By setting the anti-drowning valve as a float valve and connecting it to the permanent magnet through a flexible connecting line, on the one hand, when the air filter device is at risk of drowning, the anti-drowning valve (float valve) is automatically blocked by the buoyancy to prevent the air filter device from drowning, thereby further increasing the redundancy of the air filter device in preventing drowning; on the other hand, since the anti-drowning valve is connected to the permanent magnet through a flexible connecting line, even if the anti-drowning valve floats up, it will not drive the permanent magnet to move together, thereby reducing the risk of the internal structure of the air filter device being squeezed and damaged.

[0052] On the basis of the above embodiment, it also includes a secondary valve chamber 109 arranged directly below the primary valve chamber 108 and in contact with the primary valve chamber 108, and an umbrella valve 110 is provided in the secondary valve chamber 109; the secondary valve chamber 109 is used to continue to discharge the dirt discharged from the primary valve chamber 108; when the dirt generates water pressure above the umbrella valve 110, the valve body of the umbrella valve 110 is opened to continue to discharge the dirt; when water pressure is generated below the umbrella valve 110, the valve body of the umbrella valve 110 is closed to prevent the air filter device 100 from drowning.

[0053] Specifically, the umbrella valve 110 has a one-way conduction characteristic, that is, when the secondary valve chamber 109 discharges the internal sewage in the air filter device 100 downward, the internal sewage generates downward water pressure on the umbrella valve 110, and the valve body of the umbrella valve 110 will open to ensure that the internal sewage can be discharged smoothly; when the car is in a wading environment, external sewage penetrates into the secondary valve chamber 109, and the external sewage generates upward water pressure on the umbrella valve 110, and the valve body of the umbrella valve 110 continues to close to prevent external sewage from penetrating into the air filter device 100.

[0054] By providing an umbrella-shaped valve in the secondary valve chamber, on the one hand, due to the one-way conduction characteristics, it can ensure that the internal sewage from top to bottom can be discharged smoothly, and can also ensure that the external sewage from bottom to top will not penetrate into the air filter device; on the other hand, the umbrella-shaped valve and the anti-drowning valve (float valve) together constitute a secondary anti-drowning structure, which increases the redundancy of the air filter device in anti-drowning, avoids relying on a single anti-drowning structure, and has the risk of failure of the anti-drowning function, further ensuring the driving safety and stability of the car.

[0055] On the basis of the above embodiment, it also includes a tertiary valve chamber 111 arranged directly below the secondary valve chamber 109 and in contact with the secondary valve chamber 109, and a nozzle-type valve 112 is provided in the tertiary valve chamber 111; the tertiary valve chamber 111 is used to continue to discharge the dirty matter discharged from the secondary valve chamber 109; when the dirty matter generates water pressure inside the nozzle-type valve 112, the valve body of the nozzle-type valve 112 is opened to continue to discharge the dirty matter; when water pressure is generated outside the nozzle-type valve 112, the valve body of the nozzle-type valve 112 is closed to prevent the air filter device 100 from drowning.

[0056] Specifically, the nozzle-shaped valve 112, also known as a duckbill valve, is made of a soft rubber material. When the three-stage valve chamber 111 downwardly discharges wastewater from the air filter 100, the wastewater generates internal water pressure on the nozzle-shaped valve 112, thereby opening the valve body of the umbrella-shaped valve 110 to ensure smooth drainage of the wastewater. When the vehicle is in a flooded environment, external wastewater enters the three-stage valve chamber 111, generating external water pressure on the nozzle-shaped valve 112, which squeezes the valve body of the nozzle-shaped valve 112 and keeps it closed, preventing external wastewater from entering the air filter 100.

[0057] By setting up a three-level valve cavity including a nozzle-type valve, on the one hand, since the nozzle-type valve is made of soft rubber material, it can ensure that the sewage accumulated inside can be discharged smoothly, and can also ensure that the external sewage will not penetrate into the air filter device; on the other hand, the nozzle-type valve, umbrella-shaped valve, and anti-drowning valve (float valve) together constitute a three-level anti-drowning structure, which further increases the redundancy of the air filter device in anti-drowning, avoids relying on the first or second level anti-drowning structure, and has the risk of failure of the anti-drowning function, and further ensures the driving safety and stability of the car.

[0058] Based on the above embodiment, the sewage pipe 102 is a Venturi throat.

[0059] The working principle of a Venturi throat is that when air flows over an obstruction, the relatively low air pressure near the port on the leeward side of the obstruction creates an adsorption effect and guides the air flow. This process evenly distributes the airflow from coarse to fine, accelerating the gas flow rate and creating a "vacuum" zone behind the Venturi throat outlet. When a high-speed airflow is introduced into the Venturi throat, a low pressure is generated at the throat of the Venturi throat. This low pressure draws air upstream from the Venturi tube, mixing with the incoming airflow and exiting the Venturi throat.

[0060] By setting the sewage pipe as a Venturi throat, when the air in the air filter device flows through the sewage pipe, due to the characteristics of the Venturi throat itself, an adsorption effect can be generated, thereby accelerating the discharge of dirty substances in the air filter device and improving the sewage discharge effect.

[0061] On the basis of the above embodiment, the liquid level intelligent sensor 107 is fixed to the bottom of the air filter device 100 by means of a buckle; and the current on-off controller 101 is fixed to the outside of the air filter device 100 by means of a buckle.

[0062] By fixing the liquid level intelligent sensor and the current on-off controller to the bottom and outside of the air filter device with clips, when the liquid level intelligent sensor and the current on-off controller are damaged or fail, it is convenient for technicians to disassemble them for repair or replacement, thereby ensuring the maintenance convenience of the sewage system in this embodiment.

[0063] Figure 3 This is a flowchart of some sewage discharge methods disclosed in an embodiment of the present invention. This embodiment can be applied to actively avoid drowning of the air filter device when the car is in a wading scene. The method of this embodiment can be executed by the current on-off controller in the sewage discharge system disclosed in an embodiment of the present invention. The sewage discharge system is arranged on the air filter device, including a current on-off controller, a sewage discharge pipe and an anti-drowning valve arranged outside the air filter device, and an electromagnet and a permanent magnet arranged inside the air filter device; the positive pole of the current on-off controller is connected to the first magnetic pole of the electromagnet by a wire, and the negative pole of the current on-off controller is connected to the second magnetic pole of the electromagnet by a wire.

[0064] like Figure 3 As shown, the sewage discharge method disclosed in this embodiment may include:

[0065] S301: Acquire a current on-off control instruction and determine the control intention of the current on-off control instruction.

[0066] Among them, the current on-off controller is communicated with the main controller. When the car has entered or is about to enter a wading scene, the user sends a current on-off control instruction to the current on-off controller through the main controller.

[0067] In one embodiment, the current on-off controller obtains the current on-off control instruction sent by the main controller, and performs intent recognition on the current on-off control instruction to determine the control intent of the current on-off control instruction. The control intent of the current on-off control instruction includes two intentions: conducting current and disconnecting current. When the control intention is to conduct current, it means that the user wants to control the electromagnet and the permanent magnet to be adsorbed, so as to drive the anti-drowning valve to move upward and block in the sewage pipe to prevent the air filter device from drowning; and when the control intention is to disconnect current, it means that the user wants to control the electromagnet and the permanent magnet to disconnect adsorption, so as to drive the anti-drowning valve to move downward and out of the sewage pipe, thereby ensuring the smooth discharge of dirty substances from the sewage pipe.

[0068] S302 : When the control intention is to conduct current, conduction is performed between the positive electrode of the controller and the negative electrode of the controller, so that the electromagnet is energized.

[0069] When powered, the electromagnet attracts the permanent magnet, which drives the anti-drowning valve upward. During this upward movement, the anti-drowning valve becomes blocked in the drain pipe, preventing the air filter from drowning. The drain pipe is used to discharge contaminants from the air filter through the drain port of the air filter. The electromagnet is positioned directly above the permanent magnet. The permanent magnet is positioned directly above the anti-drowning valve and connected to the anti-drowning valve. The drain pipe is positioned directly below the drain port of the air filter and is in contact with the drain port. The anti-drowning valve is positioned directly below the drain pipe.

[0070] In one embodiment, when the current on-off controller determines that the control intention is to conduct current, the positive pole of the controller is controlled to be connected with the negative pole of the controller so that the electromagnet is energized. After the electromagnet is energized, a magnetic field is generated, and a magnetic attraction force is generated between the electromagnet and the permanent magnet, thereby adsorbing the permanent magnet. In the process of adsorption with the electromagnet, the permanent magnet drives the anti-drowning valve to move upward. In this embodiment, the minimum cross-sectional area of ​​the sewage pipe is smaller than the maximum cross-sectional area of ​​the anti-drowning valve. Therefore, when the anti-drowning valve moves upward, it will enter the sewage pipe, and be squeezed with the sewage pipe and eventually blocked in the sewage pipe. Since the anti-drowning valve itself has waterproof properties, even if the car enters a wading scene, external sewage cannot enter the air filter device through the sewage pipe and the sewage outlet.

[0071] The technical solution of the embodiment of the present invention determines the control intention of the current on-off control instruction through the current on-off controller. When the control intention is to conduct current, the positive pole of the controller is controlled to be conductive and the negative pole of the controller is controlled to conduct so that the electromagnet is energized. When energized, the electromagnet is adsorbed by the permanent magnet. In the process of adsorption with the electromagnet, the permanent magnet drives the anti-drowning valve to move upward. In the process of moving upward, the anti-drowning valve is blocked in the drain pipe to prevent the air filter device from drowning, thereby achieving the effect of actively controlling the anti-drowning valve to be blocked in the drain pipe to prevent the air filter device from drowning. Therefore, when the car is in a wading scene, the risk of water entering the air filter device can be reduced, thereby ensuring the driving safety and stability of the car. In addition, the problem of shortening the maintenance life of the air filter device due to water ingress can be avoided, thereby improving the durability of the air filter device.

[0072] Optionally, after determining the control intention of the current on-off control instruction, the method further includes:

[0073] When the control intention is to cut off the current, the positive pole of the controller and the negative pole of the controller are controlled to be disconnected so that the electromagnet is de-energized.

[0074] In one embodiment, when the current on-off controller determines that the control intention is to cut off the current, the current on-off controller disconnects the positive and negative terminals of the controller, thereby de-energizing the electromagnet. After the electromagnet is de-energized, the magnetic field disappears, and the magnetic attraction between the permanent magnet and the electromagnet is lost. The permanent magnet is no longer attracted to the electromagnet and moves downward under the action of gravity. This, in conjunction with the anti-drowning valve, generates a downward force to break free from the pressure on the drain pipe and escape out of the drain pipe. At this point, dirt in the air filter device can be discharged out of the air filter device through the drain port and the drain pipe.

[0075] By disconnecting the positive pole and the negative pole of the controller when the control intention is to cut off the current, the electromagnet is powered off, so that the "anti-drowning" and "waste discharge" functions of the air filter device can be intelligently switched according to the actual needs of the user, ensuring the user's car experience.

[0076] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0077] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A sewage system, provided on an air filter device, characterized in that: The air filter comprises a current on-off controller, a sewage pipe and an anti-drowning valve arranged outside the air filter device, and an electromagnet and a permanent magnet arranged inside the air filter device; a positive pole of the current on-off controller is connected to a first magnetic pole of the electromagnet by a wire, and a negative pole of the current on-off controller is connected to a second magnetic pole of the electromagnet by a wire; The current on-off controller is used to respond to the current on-off control instruction and control the conduction between the positive pole of the controller and the negative pole of the controller so that the electromagnet is energized; The electromagnet is arranged directly above the permanent magnet and is used to attract the permanent magnet when powered; The permanent magnet is arranged just above the anti-drowning valve and is connected to the anti-drowning valve, and is used to drive the anti-drowning valve to move upwards during the process of being attracted by the electromagnet; The sewage discharge pipe is arranged directly below the sewage discharge port of the air filter device and is in contact with the sewage discharge port, and is used to discharge the dirty substances inside the air filter device out of the air filter device through the sewage discharge port; The anti-drowning valve is arranged just below the sewage pipe and is used to be blocked in the sewage pipe during the upward movement to prevent the air filter device from drowning; The device further comprises a first-level valve cavity disposed directly below the sewage pipe and in contact with the sewage pipe, wherein the anti-drowning valve is disposed in the first-level valve cavity and is a float valve connected to the permanent magnet via a flexible connection line. Among them, it also includes a secondary valve cavity arranged just below the primary valve cavity and in contact with the primary valve cavity, and an umbrella-shaped valve is arranged in the secondary valve cavity.

2. The sewage system according to claim 1, characterized in that: It also includes a liquid level intelligent sensor disposed at the bottom of the air filter device, wherein a positive electrode of the liquid level intelligent sensor is connected to the first magnetic pole of the electromagnet by a wire, and a negative electrode of the liquid level intelligent sensor is connected to the second magnetic pole of the electromagnet by a wire; The liquid level intelligent sensor is used to conduct the positive electrode of the sensor and the negative electrode of the sensor when immersed in water, so that the electromagnet is energized.

3. The sewage system according to claim 1, characterized in that: The first-level valve chamber is used to continue to discharge the dirty substances discharged from the sewage pipe; The anti-drowning valve is also used to float up to the sewage pipe and block the sewage pipe in the case of immersion in water, so as to prevent the air filter device from drowning.

4. The sewage system according to claim 3, characterized in that: The secondary valve chamber is used to continue to discharge the dirty substances discharged from the primary valve chamber; When the dirt generates water pressure above the umbrella valve, the valve body of the umbrella valve opens to continue to discharge the dirt; when water pressure is generated below the umbrella valve, the valve body of the umbrella valve closes to prevent the air filter device from drowning.

5. The sewage system according to claim 4, characterized in that: It also includes a third-level valve cavity arranged directly below the second-level valve cavity and in contact with the second-level valve cavity, wherein a nozzle-type valve is arranged in the third-level valve cavity; The third-level valve chamber is used to continue to discharge the dirty substances discharged from the second-level valve chamber; When the dirt generates water pressure inside the nozzle-type valve, the valve body of the nozzle-type valve opens to continue to discharge the dirt; when water pressure is generated outside the nozzle-type valve, the valve body of the nozzle-type valve closes to prevent the air filter device from drowning.

6. The sewage system according to claim 2, characterized in that: The liquid level intelligent sensor is fixed to the bottom of the air filter device through a buckle.

7. The sewage drainage system according to any one of claims 1 to 6, characterized in that: The sewage pipe is a Venturi throat.

8. The sewage system according to claim 1, characterized in that: The current on-off controller is fixed to the outside of the air filter device through a buckle.

9. A sewage discharge method, characterized in that: The method is performed by a current on-off controller in a sewage discharge system according to any one of claims 1 to 8, wherein the sewage discharge system is provided on an air filter device, and comprises a current on-off controller, a sewage discharge pipe, and an anti-drowning valve provided outside the air filter device, and an electromagnet and a permanent magnet provided inside the air filter device; a positive pole of the current on-off controller is connected to a first magnetic pole of the electromagnet by a wire, and a negative pole of the current on-off controller is connected to a second magnetic pole of the electromagnet by a wire, and the method comprises: Obtaining a current on-off control instruction and determining a control intention of the current on-off control instruction; When the control intention is to conduct current, controlling the positive pole of the controller and the negative pole of the controller to conduct, so that the electromagnet is energized; The electromagnet is attracted to the permanent magnet when powered, and the permanent magnet drives the anti-drowning valve to move upward during the adsorption process. The anti-drowning valve is blocked in the sewage pipe during the upward movement to prevent the air filter device from drowning. The sewage discharge pipe is used to discharge the dirty substances inside the air filter device out of the air filter device through the sewage discharge port of the air filter device.

10. The method according to claim 9, after determining the control intention of the current on-off control instruction, further comprising: When the control intention is to disconnect the current, the positive pole of the controller and the negative pole of the controller are controlled to be disconnected, so that the electromagnet is powered off.

Images