A fuel filter backflushing device

Abstract

The utility model provides a kind of fuel filter backwash device, including filter tank, the inlet opening of the left side of filter tank is provided with oil inlet pipe, the outlet opening of the right side of filter cartridge is provided with oil outlet pipe, the inlet opening of the outer camber upper end of oil outlet pipe is provided with inlet pipe, the inside of filter tank is provided with filter cartridge, the blowdown opening of the lower end of filter cartridge is provided with blowdown pipe, the lower end of blowdown pipe is provided with the separation tank being communicated therewith, the outlet opening of the lower end of separation tank is provided with outlet pipe, the inside of separation tank is provided with easy-to-clean separation mechanism. A kind of fuel filter backwash device described in the utility model can separate solid-liquid mixed medium discharged through blowdown pipe, and separated solid can be quickly removed from separation mechanism, so that separated solid can be reused after subsequent purification.

Description

Technical Field

[0001] This utility model belongs to the field of fuel filter backwashing technology, and specifically relates to a fuel filter backwashing device. Background Technology

[0002] A fuel filter backflushing device is a specialized device designed to clean the internal filter element or screen of a fuel filter. It removes impurities and contaminants accumulated on the filter element through reverse flow. This device is widely used in fuel supply systems for diesel, gasoline, and other fuels, especially in applications requiring long-term stable operation and high fuel purity.

[0003] Existing fuel filter backwashing devices use valve switching to inject clean fuel in reverse high pressure from the oil outlet, flushing impurities on the filter element surface and discharging it from the oil inlet side or bottom drain pipe. This removes blockages, restores filtration efficiency, achieves automated cleaning, and ensures the continuous and stable operation of the fuel system. However, the discharge from the drain pipe is a mixture of oil, liquid, and solid particles without separation. If discharged directly without treatment, it can easily pollute the soil and liquids. Furthermore, the discharge still contains a large amount of recyclable fuel oil. Directly treating it as waste liquid means that valuable energy resources are wasted. Utility Model Content

[0004] In view of this, this utility model addresses the shortcomings of the prior art by providing a fuel filter backwashing device that can separate the solid-liquid mixture discharged through the drain pipe and quickly remove the separated solids from the separation mechanism, so that the separated solids can be reused after subsequent purification.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a fuel filter backwashing device, including a filter tank, an oil inlet pipe is provided in the liquid inlet on the left side of the filter tank, an oil outlet pipe is provided in the liquid outlet on the right side of the filter cylinder, an inlet pipe is provided in the liquid inlet at the upper end of the outer arc surface of the oil outlet pipe, a filter cylinder is provided inside the filter tank, a drain pipe is provided in the drain outlet at the lower end of the filter cylinder, a separation box is provided at the lower end of the drain pipe and connected to it, an outlet pipe is provided in the liquid outlet hole at the lower end of the separation box, an easy-clean separation mechanism is provided inside the separation box, the easy-clean separation mechanism includes a sliding box slidably disposed inside the separation box, a separation mesh plate is fixed inside the sliding box by bolts, a sliding sealing plate is slidably disposed in the sliding groove on the rear side of the sliding box, a sealing frame strip adapted to the sliding groove is wrapped on the outer surface of the sliding sealing plate, a sliding pusher is slidably disposed inside the sliding box, and a brush plate abutting against the separation mesh plate is provided on the rear side of the sliding pusher.

[0006] As a further improvement of this utility model, a hollow column is rotatably arranged inside the filter tank, and a sealed bearing is provided on the bottom wall of the filter cylinder. The lower end of the hollow column is rotatably connected to the lower end of the sealed bearing. Multiple drainage grooves are opened on the outer arc surface of the hollow column, and multiple scrapers are provided on the outer arc surface of the hollow column. The hollow column and the scrapers are fixed by welding. All the scrapers are in contact with the inner arc wall of the filter cylinder. A drive unit for driving the hollow column to rotate is provided at the upper end of the filter tank. The drive unit includes a motor located at the upper end of the filter tank. The output shaft of the motor is connected to the upper end of the hollow column through a coupling.

[0007] As a further improvement of this utility model, multiple support frames are provided on the outer side of the filter tank, and the filter tank and the support frames are fixed together by welding.

[0008] As a further improvement of this utility model, a solenoid valve is connected in series in the middle of the inlet pipe, a solenoid valve is connected in series in the middle of the drain pipe, a drain pipe is provided in the outlet hole at the lower end of the filter tank, and a solenoid valve is connected in series in the middle of the drain pipe.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: Firstly, by pulling the sliding box out from the inside of the separation box, and then pulling the sliding sealing plate out from the inside of the sliding box, and then pushing the sliding pusher to move the brush plate backward, the solid impurities inside the sliding box are pushed out into the collection and recycling container. This can separate the solid-liquid mixture discharged through the drain pipe, and the separated solids can be quickly removed from the separation mechanism, so that the separated solids can be reused after subsequent purification.

[0010] Secondly, during the fuel backwashing process, by controlling the motor to start running, the output shaft drives the scraper on the hollow column to rotate slowly, which helps the high-pressure cleaning fluid to scrape off and discharge the stubborn impurities stuck on the filter cartridge for cleaning, which can further improve the cleaning effect of backwashing.

[0011] Thirdly, by controlling the opening of solenoid valve three, the cleaning fluid remaining at the bottom of the filter tank after rinsing the filter can be discharged, making it convenient for personnel to empty the filter in a timely manner and continue filtering the fuel. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a front sectional view of the present invention. Figure 4 This is a schematic diagram of the sliding box structure of this utility model.

[0014] In the diagram: 101, Filter tank; 102, Oil outlet pipe; 103, Liquid inlet pipe; 104, Oil inlet pipe; 105, Filter cylinder; 106, Solenoid valve one; 107, Solenoid valve two; 108, Sewage pipe; 109, Solenoid valve three; 110, Liquid outlet pipe; 111, Support frame; 201, Separation box; 202, Sliding box; 203, Sliding pusher; 204, Liquid outlet pipe; 205, Brush plate; 206, Separation mesh plate; 207, Sliding sealing plate; 301, Motor; 302, Hollow column; 303, Scraper; 304, Sewage trough. Detailed Implementation

[0015] To better understand this utility model, the following embodiments further illustrate its content, but the scope of protection of this utility model is not limited to the embodiments described below. Numerous specific details are set forth in the following description to provide a more thorough understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without one or more of these details.

[0016] like Figure 1 , 2 As shown in Figure 3, a fuel filter backwashing device includes a filter tank 101. An oil inlet pipe 104 is installed in the liquid inlet on the left side of the filter tank 101, and an oil outlet pipe 102 is installed in the liquid outlet on the right side of the filter cylinder 105. An inlet pipe 103 is installed in the liquid inlet at the upper end of the outer arc surface of the oil outlet pipe 102. A filter cylinder 105 is installed inside the filter tank 101, and a drain pipe 108 is installed in the drain outlet at the lower end of the filter cylinder 105. The lower end of the filter tank 101 is connected to a separation box 201. A liquid outlet pipe 204 is installed in the liquid outlet hole at the lower end of the separation box 201. An easy-to-clean separation mechanism is installed inside the separation box 201. A solenoid valve 106 is connected in series in the middle of the liquid inlet pipe 103. A solenoid valve 107 is connected in series in the middle of the drain pipe 108. Multiple support frames 111 are installed on the outer side of the filter tank 101. The support frames 111 can support the stable operation of the backwashing device inside the filter tank 101.

[0017] like Figure 2 , 4As shown, the easy-to-clean separation mechanism includes a sliding box 202 slidably disposed inside the separation box 201. A separation mesh plate 206 is fixed inside the sliding box 202 by bolts. A sliding sealing plate 207 is slidably disposed in a groove opened on the rear side of the sliding box 202. A sealing frame strip adapted to the groove is wrapped on the outer surface of the sliding sealing plate 207. A sliding pusher 203 is slidably disposed inside the sliding box 202. A brush plate 205 is disposed on the rear side of the sliding pusher 203 that abuts against the separation mesh plate 206.

[0018] like Figure 2 , 3 As shown, a hollow column 302 is rotatably arranged inside the filter tank 101. A sealed bearing is provided on the bottom wall of the filter cylinder 105. The lower end of the hollow column 302 is rotatably connected to the lower end of the sealed bearing. Multiple drainage grooves 304 are opened on the outer arc surface of the hollow column 302. Multiple scrapers 303 are provided on the outer arc surface of the hollow column 302. All scrapers 303 are in contact with the inner arc wall of the filter cylinder 105. A drive unit for driving the hollow column 302 to rotate is provided at the upper end of the filter tank 101. The drive unit includes a motor 301 located at the upper end of the filter tank 101. The output shaft of the motor 301 is connected to the upper end of the hollow column 302 through a coupling.

[0019] By connecting the inlet pipe 104 to an external fuel delivery pipe with a solenoid valve and the outlet pipe 102 to a fuel discharge pipe with a solenoid valve, the solenoid valves on the external delivery pipe and the discharge pipe are opened. Fuel enters the interior of the filter canister 101 and then the interior of the filter cartridge 105. After the fuel is filtered by the filter cartridge 105, the filtered fuel is discharged to the fuel delivery pipeline through the outlet pipe 102.

[0020] When excessive impurities accumulate in filter cartridge 105, the external solenoid valves on the delivery and discharge pipes are closed, and solenoid valve 107 is opened to release the pressure inside the filter to near atmospheric pressure. Then, the inlet pipe 103 is connected to the pump pipe of an external cleaning liquid pump, and the external pump is started. The cleaning liquid enters the filter cartridge 105 from top to bottom at a high flow rate, stripping and carrying impurities upwards. The stripped impurities, mixed with the cleaning liquid, enter the drain pipe 108 from the drain tank 304 and continue rinsing for a period of time (usually 5-15 minutes, or until...). The cleaning solution becomes clear, enabling backwashing of the filter. It then enters the separation tank 201 through the drain pipe 108 and achieves solid-liquid separation through the separation mesh plate 206. Solid impurities remain at the upper end of the separation mesh plate 206, while the liquid is discharged through the outlet pipe 204. After backwashing, the sliding tank 202 is pulled out from the separation tank 201, and then the sliding sealing plate 207 is pulled out from the sliding tank 202. Next, the sliding pusher 203 is pushed to move the brush plate 205 backward, pushing the solid impurities inside the sliding tank 202 out into the collection and recovery container.

[0021] During the solid-liquid separation after cleaning, the sealing frame strip on the sliding sealing plate 207 is in close contact with the sliding groove to achieve a seal. The collection box will not slide out of the separation box 201 during operation due to the influence of gravity and frictional damping. Similarly, the sliding pusher 203 is also affected by the frictional damping between the sliding boxes 202 and will not shift during operation.

[0022] During the fuel backwashing process, the motor 301 is turned on and started, and the output shaft drives the scraper 303 on the hollow column 302 to rotate slowly, which helps the high-pressure cleaning fluid to scrape off and discharge the stubborn impurities stuck on the filter cartridge 105 for cleaning.

[0023] According to another embodiment of the present invention, such as Figure 3 As shown, a drain pipe 110 is installed in the outlet hole at the lower end of the filter tank 101. A solenoid valve 109 is connected in series in the middle of the drain pipe 110. By controlling the opening of the solenoid valve 109, the cleaning liquid remaining at the bottom of the filter tank 101 after rinsing the filter (the cleaning liquid is pure because the backwashing operation has been completed) can be discharged.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A fuel filter backwashing device, comprising a filter tank (101), characterized in that: An oil inlet pipe (104) is provided in the liquid inlet on the left side of the filter tank (101), an oil outlet pipe (102) is provided in the liquid outlet on the right side of the filter cylinder (105), an inlet pipe (103) is provided in the liquid inlet on the upper part of the outer arc surface of the oil outlet pipe (102), a filter cylinder (105) is provided inside the filter tank (101), a drain pipe (108) is provided in the drain outlet at the lower end of the filter cylinder (105), a separation box (201) is provided at the lower end of the drain pipe (108), an outlet pipe (204) is provided in the liquid outlet hole at the lower end of the separation box (201), and an easy-to-clean separation mechanism is provided inside the separation box (201).

2. The fuel filter backwashing device as described in claim 1, characterized in that: The easy-to-clean separation mechanism includes a sliding box (202) slidably disposed inside the separation box (201). A separation mesh plate (206) is fixed inside the sliding box (202) by bolts. A sliding sealing plate (207) is slidably disposed in a groove opened on the rear side of the sliding box (202). A sealing frame strip adapted to the groove is wrapped on the outer surface of the sliding sealing plate (207). A sliding pusher (203) is slidably disposed inside the sliding box (202). A brush plate (205) is disposed on the rear side of the sliding pusher (203) and abuts against the separation mesh plate (206).

3. The fuel filter backwashing device as described in claim 1, characterized in that: A solenoid valve 1 (106) is connected in series in the middle of the liquid inlet pipe (103), and a solenoid valve 2 (107) is connected in series in the middle of the sewage outlet pipe (108).

4. A fuel filter backwashing device as described in claim 1, characterized in that: The filter tank (101) has a hollow column (302) rotatably mounted inside. A sealed bearing is mounted on the bottom wall of the filter cylinder (105). The lower end of the hollow column (302) is rotatably connected to the lower end of the sealed bearing. Multiple drainage grooves (304) are opened on the outer arc surface of the hollow column (302). Multiple scrapers (303) are mounted on the outer arc surface of the hollow column (302). All scrapers (303) are in contact with the inner arc wall of the filter cylinder (105). A drive unit for driving the hollow column (302) to rotate is mounted on the upper end of the filter tank (101).

5. A fuel filter backwashing device as described in claim 4, characterized in that: The drive unit includes a motor (301) mounted on the upper end of the filter tank (101), and the output shaft of the motor (301) is connected to the upper end of the hollow column (302) via a coupling.

6. A fuel filter backwashing device as described in claim 1, characterized in that: The filter tank (101) has a drain pipe (110) installed in the outlet hole at the lower end, and a solenoid valve (109) is connected in series in the middle of the drain pipe (110).

7. A fuel filter backwashing device as described in claim 1, characterized in that: Multiple support frames (111) are provided on the outer side of the filter tank (101).

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