Intelligent drainage long-acting filter

Abstract

The utility model relates to the technical field of fuel filters, and mainly discloses an intelligent drainage long-acting filter which comprises a shell and a filter element assembly in the shell, a water accumulation chamber is arranged at the bottom of the shell, and the filter element assembly comprises a filter element and a filter element framework. The two-way electromagnetic valve assembly synchronously controls the liquid inlet channel to be closed and the liquid outlet channel to be opened through the coaxial valve element, the two-way electromagnetic valve assembly is matched with the isolation plate to form an independent drainage cavity, and uninterrupted drainage under the engine running state is achieved. Through sealing isolation of the isolation plate and synchronous control of the electromagnetic valve assembly, the risk of air backflow is thoroughly blocked, and the problems that in the prior art, shutdown drainage is needed, and air permeation causes air resistance are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuel filter technical field, concretely is a kind of wisdom drainage long-acting filter. BACKGROUND

[0002] Fuel filter is a kind of device for filtering impurities and moisture in fuel, to protect the precision components of engine fuel system from wear and damage. It is an important component in the engine fuel system, which can effectively prolong the service life of engine and maintain its normal operation.

[0003] After the filtration and separation of fuel filter, the separated water is deposited in the water collecting cup at the lower end of the filter, and when the accumulated amount of water in the water collecting cup reaches the set limit value with the continuation of time, if the water in the water collecting cup is not discharged in time, the water will enter the filter element and occupy the volume space of fuel, which will damage the strength of paper filter element and reduce the filter life, thereby affecting the filtration of fuel filter and affecting the oil-water separation. In severe cases, it will affect the oil flow of filter, cause insufficient oil supply to engine, and further damage the engine injector, high-pressure pump components, and even cause engine flameout.

[0004] To solve the above problems, the water in the water collecting cup needs to be discharged in time. The most commonly used way at present is to install a drain valve at the lower end of the filter water collecting cup, and to open the drain valve manually for drainage at regular intervals. Another way is to measure the water level information in the water collecting cup by sensor, and when the water level in the water collecting cup reaches or exceeds the water discharge level set by the vehicle-mounted ECU, the driver receives the alarm of the vehicle-mounted ECU and performs drainage. As disclosed in CN105228719A, an automatic drain device includes a reservoir, a fluid inlet, and a fluid outlet. A first valve member is movable between an open position that allows fluid to pass through the fluid inlet into the reservoir and a closed position that prevents fluid from passing into the reservoir. A second valve member is movable between an open position that allows fluid to exit the reservoir and a closed position that prevents fluid from exiting the reservoir. The automatic drain device is installed in communication with a container in which water is separated from fuel by collecting at the bottom of the container. The automatic drain device uses a sensor to open the first valve so that water flows from the container into the reservoir in the automatic drain device. When the first valve is closed, the second valve is opened, and the second valve allows water in the reservoir to exit the automatic drain device while blocking fluid communication between the reservoir and the container.

[0005] The technical difficulties of realizing non-stop drainage are as follows: first, when the engine is running, the filter is in a negative pressure working state, so even if the automatic drainage is opened, the water cannot be successfully discharged; second, when the drainage is performed under the running state of the engine, if the valve control is not timely or out of sync, air will enter the filter chamber in reverse, air bubbles will be formed in the fuel pipeline to hinder the flow of fuel, resulting in insufficient oil supply, engine power drop or flameout.

[0006] The above two methods still need to stop the vehicle at a suitable position and stop the engine after the driver knows the water level is too high, and then operate the mechanical drain valve or control the electromagnetic valve to open and close, and the technical logic still stays in the mode of stopping first and draining later.

[0007] The prior art is limited by structural complexity, low negative pressure drainage efficiency and air backflow risk, and cannot meet the reliable drainage demand of the fuel filter in the engine running state. Practical new type content

[0008] The utility model solves the technical problems existing in the prior art and provides a smart drainage long-acting filter, which forms an independent drainage chamber through a filter structure and an electromagnetic valve assembly and can realize uninterrupted drainage in the engine running state.

[0009] To achieve the above object, the utility model adopts the following technical scheme: a smart drainage long-acting filter, comprising a shell, a filter seat and a filter element assembly arranged in the shell, wherein the filter seat is detachably installed on the top of the shell. The bottom of the shell is provided with a water accumulation chamber. The filter element assembly comprises a filter element skeleton and a filter element, the filter element is installed on the filter element skeleton, and a separation chamber is formed between the filter element and the shell. The separation chamber and the water accumulation chamber are sealed and isolated by a partition plate, a liquid inlet channel is arranged between the separation chamber and the water accumulation chamber, the water accumulation chamber is further provided with a liquid outlet channel, the bottom of the shell is provided with an electromagnetic valve assembly, and the electromagnetic valve assembly controls the liquid inlet channel to be closed and the liquid outlet channel to be opened in the energized state. A water level sensor assembly is arranged in the water accumulation chamber, and the water level sensor assembly is used to monitor the water level of the water accumulation chamber and control the on-off of the electromagnetic valve assembly through a controller.

[0010] The electromagnetic valve assembly controls the selective opening and closing of the liquid inlet channel and the liquid outlet channel, specifically, the electromagnetic valve assembly comprises a first control state and a second control state, the first control state is an energized state, the second control state is a de-energized state, and the electromagnetic valve assembly controls the liquid outlet channel to be closed and the liquid inlet channel to be opened in the de-energized state.

[0011] Through the technical scheme, when the engine is running, the sewage filtered out by the filter element from the separation cavity enters the water accumulation chamber through the liquid inlet channel, when the sewage in the water accumulation chamber reaches a certain position, the water level sensor assembly monitors that the sewage in the water accumulation chamber reaches an upper threshold, the water level sensor assembly outputs a voltage signal to trigger the electromagnetic valve assembly to be powered on through the controller, after the electromagnetic valve assembly is powered on, the controller controls the liquid inlet channel to be closed and the liquid outlet channel to be opened, and the sewage in the water accumulation chamber is discharged to the outside. At this time, the engine is still in a running state, since the water accumulation chamber is isolated and sealed from the separation cavity, the one-way valve assembly is in a closed state, therefore, the water accumulation chamber forms an independent drainage space, and when the engine is running, air cannot enter the outer and inner separation cavities of the filter, air backflow can be effectively avoided, and therefore, the mode of non-stop drainage can be realized. With the discharge of the sewage, the water level sensor assembly monitors that the sewage in the water accumulation chamber reaches a lower threshold, the water level sensor assembly outputs no voltage signal, the electromagnetic valve assembly is powered off and reset, the controller controls the liquid outlet channel to be closed and the liquid inlet channel to be opened, and the blocked sewage enters the water accumulation chamber from the separation cavity again.

[0012] Further, the electromagnetic valve assembly is a two-position four-way electromagnetic valve.

[0013] Preferably, the two-position four-way electromagnetic valve comprises a valve body and a valve core, a valve cavity is formed in the valve body, the valve cavity penetrates through the valve body, a first input channel and a second output channel are formed on the valve body, the valve core is arranged in the valve cavity, the valve core is a coaxial valve core, a first output channel communicated with the first input channel and a second input channel communicated with the second output channel are respectively formed at the upper and lower ends of one side of the valve body, the first input channel and the first output channel are communicated to form an L-shaped liquid inlet channel, the second input channel and the second output channel are communicated to form an L-shaped liquid outlet channel, the first input channel is communicated with the separation cavity, the first output channel is communicated with the water accumulation chamber, the second input channel is communicated with the water accumulation chamber, and the second output channel is communicated with the outside, the valve core is driven by an electromagnetic coil in the valve body, and when powered on, the valve core synchronously closes the first input channel and the second output channel, and when powered off, the valve core resets to open the first input channel and close the second output channel.

[0014] Further, the upper end and the lower end of the valve core are respectively provided with tapered sealing surfaces, and the first input channel and the second output channel are provided with matched horn-shaped openings.

[0015] Further, the first input channel of the upper end of the valve body is sealingly connected with the isolation plate through a sealing ring, and the first output channel and the second input channel of the valve body are sealingly connected with the bottom of the shell through sealing rings.

[0016] In order to facilitate the water accumulation chamber sewage can be quickly discharged, the balance of water accumulation chamber with the air inlet channel, through the electromagnetic valve assembly control the opening and closing of the air inlet channel, preferably, the two-way four-way electromagnetic valve valve body is provided with the air inlet channel with the first output channel, two-way four-way electromagnetic valve in the power-off state, the air inlet channel is in the closed state, two-way four-way electromagnetic valve in the power-on state, the air inlet channel is opened.

[0017] The further scheme of the utility model lies in, the isolation board and shell can be detachably connected, and a sealing ring is arranged at the connecting position of the isolation board and the shell.

[0018] Preferably, the water level sensor assembly is one of photoelectric, float, capacitive, probe, cable and ultrasonic water level sensors.

[0019] The further scheme of the utility model lies in, the filter core framework includes a center tube, an upper end cover and a lower end cover, the upper end cover and the lower end cover are fixedly installed at the upper end and the lower end of the center tube respectively, and the center tube is uniformly provided with through holes allowing fuel to pass through, and the filter core is sleeved outside the center tube.

[0020] Compared with the prior art, the utility model has the beneficial effects that:

[0021] The utility model discloses a filter assembly, which comprises a filter core, a water accumulation chamber, a water level sensor assembly, a controller and a two-way electromagnetic valve assembly, wherein the filter core is arranged in the water accumulation chamber, the water level sensor assembly is arranged in the water accumulation chamber, the controller is connected with the water level sensor assembly, and the two-way electromagnetic valve assembly is connected with the water accumulation chamber. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the drawings without paying creative labor.

[0023] Figure 1 It is the whole structure schematic diagram of the utility model filter;

[0024] Figure 2 It is the structure schematic diagram of the utility model embodiment 1 electromagnetic valve;

[0025] Figure 3 Figure 2 is a structural schematic diagram of the electromagnetic valve in the power-on state of the utility model embodiment 2.

[0026] Figure 4 Figure 2 is a structural schematic diagram of the electromagnetic valve in the power-on state of the utility model embodiment 2.

[0027] In the figure, 1, filter seat; 2, upper end cover; 3, shell; 4, center tube; 5, filter element; 6, lower end cover; 7, separation cavity; 8, isolation plate; 9, electromagnetic valve assembly; 10, water level sensor assembly; 11, water accumulation chamber; 12, liquid inlet channel; 13, liquid outlet channel; 14, valve body; 15, valve core; 16, first input channel; 17, first output channel; 18, second input channel; 19, second output channel; 20, air inlet channel; 21, flow guide pipe. DETAILED DESCRIPTION

[0028] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the drawings and specific embodiments of the specification.

[0029] Figures 1-2 An embodiment of the utility model is shown.

[0030] As Figure 1 shown, the embodiment provides a kind of wisdom drainage long-acting filter, including shell 3, filter seat 1 and the filter element 5 assembly being arranged in the inside of shell 3, the shell 3 is transparent material, the filter seat 1 can be detachably installed at the top of shell 3. Preferably, the filter seat 1 is connected with shell 3 by stop neck thread, and sealing ring is arranged at its connecting portion.

[0031] The filter element 5 assembly includes filter element 5 skeleton, filter element 5. The filter element 5 is installed on filter element 5 skeleton.

[0032] Specifically, the filter element 5 skeleton includes center tube 4, upper end cover 2 and lower end cover 6, the upper end cover 2 and lower end cover 6 are fixedly installed at the upper end and lower end of center tube 4 respectively, the center tube 4 is uniformly distributed with through hole allowing fuel to pass, the lower end cover 6 is connected to the bottom of shell 3 by stop neck, and sealing ring is arranged at its connecting portion, the upper end cover 2 is connected to the bottom of filter seat 1 by stop neck, and sealing ring is arranged at its connecting portion, the filter element 5 is sleeved outside the center tube 4, and the hydrophobic filter screen is sleeved inside the center tube 4.

[0033] The filter element 5 assembly further includes flow guide pipe 21, the flow guide pipe 21 is located inside the center tube 4, the flow guide pipe is integrally formed with the upper end cover 2, and the flow guide pipe extends downward from the upper end cover 2 to the middle part of the filter element 5, and the flow guide pipe 21 is communicated with the oil outlet of the filter.

[0034] The bottom of the shell 3 is provided with a water accumulation chamber 11. The filter core 5 and the shell 3 form a separation cavity 7. The separation cavity 7 and the water accumulation chamber 11 are sealed and isolated by a partition plate 8, and the separation cavity 7 and the water accumulation chamber 11 are provided with a liquid inlet channel 12 and a liquid outlet channel 13.

[0035] The electromagnetic valve assembly 9 controls the opening and closing of the liquid inlet channel 12 and the liquid outlet channel 13.

[0036] As can be easily thought by those skilled in the art, the drainage structure of the utility model is also applicable to the filter with double water accumulation chambers 11. Figure 2 As shown in the figure, the two-position four-way electromagnetic valve includes a valve body 14 and a valve core 15.

[0037] The upper and lower ends of one side of the valve body 14 are respectively provided with a first output channel 17 and a second input channel 18, which are communicated with the first input channel 16 and the second output channel 19, respectively.

[0038] The second input channel 18 is vertically arranged, and its lower end is open to the outside. The second output channel 19 is perpendicular to the second input channel 18. The second input channel 18 is open to the water collecting chamber 11. The second input channel 18 and the second output channel 19 are communicated to form an L-shaped liquid outlet channel 13. The first input channel 16 is communicated with the separation chamber 7. The first output channel 17 is communicated with the water collecting chamber 11. The second input channel 18 is communicated with the water collecting chamber 11. The second output channel 19 is communicated with the outside. The valve core 15 is driven by the electromagnetic coil in the valve body 14. When the electromagnetic coil is powered, the first input channel 16 and the second output channel 19 are synchronously closed. When the electromagnetic coil is powered off, the first input channel 16 is opened and the second output channel 19 is closed.

[0039] The structure and principle of the electromagnetic coil controlling the movement of the valve core 15 are prior art, and will not be described herein.

[0040] It is easily conceived by those skilled in the art that two two-position two-way electromagnetic valves are used to replace one two-position four-way valve to realize the technical scheme of the above-mentioned non-stop drainage, but there are two defects: one is high manufacturing cost, and the other is that the electromagnetic valve controller circuit is complex and needs two supply working voltages. Therefore, the two-position four-way electromagnetic valve is the optimal embodiment.

[0041] The upper end and the lower end of the valve core 15 are respectively provided with tapered sealing surfaces. The first input channel 16 and the second output channel 19 are respectively provided with matching horn-shaped openings.

[0042] The end of the first input channel 16 of the upper end of the valve body 14 is sealingly connected with the isolation plate 8 through a sealing ring. The ends of the first output channel 17 and the second input channel 18 of the valve body 14 are sealingly connected with the bottom of the housing 3 through sealing rings.

[0043] The water level sensor assembly 10 is one of photoelectric type, float ball type, capacitive type, probe type, cable type and ultrasonic wave type water level sensor. In the embodiment, the water level sensor is preferably the float ball type water level sensor. The working principle of the float ball type water level sensor is based on the Archimedes buoyancy principle. When the liquid level changes, the float ball moves up and down, the magnetic steel in the float ball attracts the reed tube in the sensor, causing the resistance in the sensor to change linearly. The transmitter converts this change into a standard current signal output, thereby realizing the detection and control of the liquid level.

[0044] When the water in the water collecting chamber 11 is drained and the electromagnetic valve assembly 9 is powered off and reset, the oil in the separation chamber 7 gradually enters the water collecting chamber 11. When the oil pressure in the separation chamber 7 is lower than the requirement or air is generated, the electric pump operates to pump oil.

[0045] Working principle:

[0046] The water level sensor assembly 10 monitors the water level of the sump chamber 11 in real time, and generates a first control instruction when the water level reaches a preset upper threshold;

[0047] The controller responds to the first control instruction and triggers the electromagnetic valve assembly 9 to perform the following actions synchronously:

[0048] The liquid inlet channel 12 is closed to block the communication between the separation chamber 7 and the sump chamber 11;

[0049] The liquid outlet channel 13 is opened to drain the sewage in the sump chamber 11 to the outside;

[0050] When the water level in the sump chamber 11 drops to a preset lower threshold, the water level sensor generates a second control instruction;

[0051] The controller responds to the second control instruction and triggers the electromagnetic valve assembly 9 to perform the following actions synchronously:

[0052] The liquid outlet channel 13 is closed to stop draining;

[0053] The liquid inlet channel 12 is opened, and the sewage in the separation chamber 7 reenters the sump chamber 11.

[0054] The above drainage method can be realized in a shutdown or non-shutdown state.

[0055] In the above technical solution, when the engine is running, the sewage filtered out by the filter element 5 from the separation chamber 7 enters the sump chamber 11 through the liquid inlet channel 12. When the sewage in the sump chamber 11 reaches a certain position, the water level sensor assembly 10 detects that the sewage in the sump chamber 11 reaches the upper threshold, and the water level sensor assembly 10 outputs a voltage signal to trigger the electromagnetic valve assembly 9 to be powered on through the controller. After the electromagnetic valve assembly 9 is powered on, the liquid inlet channel 12 is controlled to be closed and the liquid outlet channel 13 is opened, and the sewage in the sump chamber 11 is drained to the outside. At this time, the engine is still in a running state, and since the sump chamber 11 is isolated and sealed from the separation chamber 7, the sump chamber 11 forms an independent drainage space, and air cannot enter the separation chamber 7 of the filter when the engine is running, which can effectively prevent air backflow, thereby realizing a non-shutdown drainage mode.

[0056] As the sewage is drained, the water level sensor assembly 10 detects that the sewage in the sump chamber 11 reaches the lower threshold, and the water level sensor assembly 10 outputs no voltage signal, so that the electromagnetic valve assembly 9 is powered off and reset, and the liquid outlet channel 13 is controlled to be closed and the liquid inlet channel 12 is opened again, so that the blocked sewage reenters the sump chamber 11 from the separation chamber 7.

[0057] Through this embodiment 1, the filter of the present application has the following advantages when draining:

[0058] Non-stop drainage: through the bidirectional synchronous closing and opening action of the electromagnetic valve assembly 9, combined with the sealing isolation of the isolation plate 8 to the water accumulation chamber, the engine completes the drainage operation in the continuous running state, completely getting rid of the restriction that the traditional technology must be stopped for operation;

[0059] Isolated drainage: the bidirectional coaxial linkage design of the electromagnetic valve assembly 9 ensures the synchronization of the closing of the liquid inlet channel 12 and the opening of the liquid outlet channel 13, and cooperates with the independent drainage space formed by the isolation plate 8 to block the communication between the external air and the filter inner cavity throughout the drainage process.

[0060] Embodiment 2:

[0061] For the manual drainage valve or the automatic drainage valve in the prior art, a groove is usually formed in the inner wall of the drainage hole as an air inlet channel, but due to the negative pressure, the air inlet amount is small, resulting in low drainage efficiency. The further improvement of the embodiment is that, as shown in Figures 3-4 In order to quickly drain the sewage in the water accumulation chamber 11 and balance the pressure, the water accumulation chamber 11 is also communicated with the air inlet channel 20, and the opening and closing of the air inlet channel 20 is controlled by the electromagnetic valve assembly 9. Preferably, the valve body 14 of the two-position four-way electromagnetic valve is provided with the air inlet channel 20 communicated with the first output channel 17. In the de-energized state, the air inlet channel 20 is in the closed state; in the energized state, the air inlet channel 20 is opened. During the drainage process, the gas enters the water accumulation chamber 11 from the air inlet channel 20, balances the pressure, and makes the sewage quickly drain.

[0062] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A smart drainage long-lasting filter, characterized in that: The utility model relates to a filter element (5) assembly, which comprises a housing (3) and a filter element (5) assembly arranged inside the housing (3), wherein the filter element (5) assembly comprises a filter element (5) framework and a filter element (5) mounted on the filter element (5) framework, the bottom of the housing (3) is provided with a water accumulation chamber (11), a separation cavity (7) is formed between the filter element (5) and the housing (3), the separation cavity (7) and the water accumulation chamber (11) are sealed and isolated by a partition plate (8), a liquid inlet channel (12) is arranged between the separation cavity (7) and the water accumulation chamber (11), a liquid outlet channel (13) is arranged between the water accumulation chamber (11) and the outside of the housing (3), an electromagnetic valve assembly (9) is arranged at the bottom of the housing (3), a water level sensor assembly (10) is arranged in the water accumulation chamber (11), the water level sensor assembly (10) is used to monitor the water level of the water accumulation chamber (11) in real time and control the on-off of the electromagnetic valve assembly (9) through a controller, and the electromagnetic valve assembly (9) controls the opening and closing of the liquid inlet channel (12) and the liquid outlet channel (13) selectively.

2. The long-acting filter of claim 1, wherein: The electromagnetic valve assembly (9) is a two-position four-way electromagnetic valve.

3. The long-acting filter of claim 2, wherein: The two-position four-way electromagnetic valve comprises a valve body (14) and a valve core (15), a valve cavity is formed in the valve body (14) and penetrates through the valve body (14), a first input channel (16) and a second output channel (19) are formed in the valve body (14), the valve core (15) is arranged in the valve cavity, the valve core (15) is a coaxial valve core (15), the upper end and the lower end of one side of the valve body (14) are respectively provided with a first output channel (17) in communication with the first input channel (16) and a second input channel (18) in communication with the second output channel (19), the first input channel (16) and the first output channel (17) are in communication to form an L-shaped liquid inlet channel (12), the second input channel (18) and the second output channel (19) are in communication to form an L-shaped liquid outlet channel (13), the first input channel (16) is in communication with the separation cavity (7), the first output channel (17) is in communication with the water accumulation chamber (11), the second input channel (18) is in communication with the water accumulation chamber (11), and the second output channel (19) is in communication with the outside, and the valve core (15) is driven by an electromagnetic coil in the valve body (14) and synchronously closes the first input channel (16) and the second output channel (19) when powered on and resets to open the first input channel (16) and close the second output channel (19) when powered off.

4. The long-acting filter of claim 3, wherein: The upper end and the lower end of the valve core (15) are respectively provided with tapered sealing surfaces, and the first input channel (16) and the second output channel (19) are provided with matched horn-shaped openings.

5. The intelligent drainage long-acting filter according to claim 3, characterized in that: The end of the first input channel (16) at the upper end of the valve body (14) is sealingly connected with the partition plate (8) through a sealing ring, and the ends of the first output channel (17) and the second input channel (18) of the valve body (14) are sealingly connected with the bottom of the housing (3) through sealing rings.

6. The intelligent drainage long-acting filter according to claim 1, characterized in that: The water-accumulating chamber (11) is also communicated with an air inlet channel (20), and the opening and closing of the air inlet channel (20) is controlled by an electromagnetic valve assembly (9).

7. The intelligent drainage long-acting filter according to any one of claims 1-6, characterized in that: The water level sensor assembly (10) is one of photoelectric type, float type, capacitive type, probe type, cable type and ultrasonic wave type water level sensor.

8. The intelligent drainage long-acting filter according to claim 7, characterized in that: The filter core (5) skeleton comprises a center tube (4), an upper end cover (2) and a lower end cover (6), the upper end cover (2) and the lower end cover (6) are fixedly installed at the upper end and the lower end of the center tube (4) respectively, the center tube (4) is uniformly provided with through holes allowing fuel to pass through, and the filter core (5) is sleeved outside the center tube (4).

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