Circulating filtration fuel filter

Abstract

The utility model discloses a circulating filtration fuel filter which is characterized in that the front surface of an outer shell is rotatably connected with a shell door through a hinge, the front surface of the shell door is movably connected with a lock handle, the left inner wall and the right inner wall of the outer shell are movably connected with a plurality of supporting plates, the interiors of the supporting plates are fixedly connected with upper filters, and the interiors of the supporting plates are fixedly connected with lower filters. Filter elements are fixedly connected to the side inner walls of the upper filter and the lower filter, a connecting pipe is fixedly connected to the lower surface of the upper filter, the lower end of the connecting pipe is fixedly connected to the upper surface of the lower filter, an input pipe is fixedly connected to the upper surface of the upper filter, and an output pipe is fixedly connected to the lower surface of the lower filter; the upper surface of the lower filter is fixedly connected with a circulating pump, the input end of the circulating pump is fixedly connected with a lower circulating pipe, the output end of the circulating pump is fixedly connected with an upper circulating pipe, and through the devices, the purity of fuel oil can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, and particularly relates to a circulating filter fuel filter. Background Art

[0002] Fuel, as the power source of an engine, its cleanliness directly affects the performance and lifespan of the engine. If impurities and particulate matters in the fuel enter the engine without effective filtration, it will lead to increased wear of engine components and even cause failures. Therefore, improving the cleanliness of fuel is the key to ensuring the normal operation of the engine and extending its service life. However, traditional fuel filters may be affected by external environmental pollution, resulting in impurities such as dust, moisture, and dirt in the external environment entering the interior of the filter, affecting the fuel filtration quality. For example, the Chinese patent discloses a "circulating filter fuel filter" with the application number "201420455211.X". The fuel is pumped into the annular flow channel by the oil pump interface, then enters the housing through the oil inlet, is filtered by the main filter element, and flows out through the oil outlet for the engine to do work. During this process, the oil and impurities contained in the oil in the space between the housing and the main filter element are sucked into the cavity by the circulating pump, and the oil filtered by the secondary filter element flows back to the space between the housing and the main filter element. In this way, the impurities are left in the cavity, reducing the amount of impurities in the space between the housing and the main filter element, avoiding serious blockage of the main filter element, and reducing the resistance and pressure loss of the oil flow. However, this device may be affected by the external environment, especially when the sealing performance is insufficient, resulting in fuel leakage or external pollutants entering the interior of the filter, affecting the filtration quality. Content of the Utility Model

[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a circulating filter fuel filter. By installing the upper filter and the lower filter inside the housing, a relatively enclosed environment can be provided for the internal components, avoiding the influence of the external environment on the filter, achieving efficient filtration of fuel, removing impurities and particulate matters in the fuel, and being beneficial to improving the cleanliness of fuel. By arranging a circulating pump, an upper circulating pipe and a lower circulating pipe outside the upper and lower filters inside the housing, a closed-loop fuel circulation system can be formed, continuously circulating and filtering the fuel inside the upper and lower filters until the required cleanliness is achieved, which is beneficial to improving the purity of fuel.

[0004] The present utility model also provides a circulating filtration fuel filter having the above-mentioned one, including: a housing, the front surface of the housing is rotatably connected with a housing door through a hinge, the front surface of the housing door is movably connected with a lock handle, the left and right inner walls of the housing are movably connected with a plurality of support plates, an upper filter is fixedly connected inside the support plates, a lower filter is fixedly connected inside the support plates, a filter element is fixedly connected to the side inner walls of the upper filter and the lower filter, a connecting pipe is fixedly connected to the lower surface of the upper filter, the lower end of the connecting pipe is fixedly connected to the upper surface of the lower filter, an input pipe is fixedly connected to the upper surface of the upper filter, an output pipe is fixedly connected to the lower surface of the lower filter, a circulating pump is fixedly connected to the upper surface of the lower filter, a lower circulating pipe is fixedly connected to the input end of the circulating pump, and an upper circulating pipe is fixedly connected to the output end of the circulating pump. Through the above devices, it is beneficial to improve the purity of the fuel.

[0005] According to a circulating filtration fuel filter of the present utility model, the input pipe is in communication with the upper filter, and the input pipe penetrates through the upper surface of the housing. Through the above devices, it is beneficial to the input of the fuel.

[0006] According to a circulating filtration fuel filter of the present utility model, the output pipe is in communication with the lower filter, and the output pipe penetrates through the lower surface of the housing. Through the above devices, it is beneficial to the output of the filtered fuel.

[0007] According to a circulating filtration fuel filter of the present utility model, the upper end of the upper circulating pipe is fixedly connected to the upper surface of the upper filter, and the upper circulating pipe is in communication with the upper filter. Through the above devices, it is beneficial to the re-input of the circulating fuel into the upper filter.

[0008] According to a circulating filtration fuel filter of the present utility model, the lower end of the lower circulating pipe is fixedly connected to the lower surface of the lower filter, and the lower circulating pipe is in communication with the lower filter. Through the above devices, it is beneficial to the output circulation of the fuel inside the lower filter.

[0009] According to a circulating filtration fuel filter of the present utility model, valves are provided on the side surfaces of the connecting pipe, the output pipe, and the input pipe, and all are located inside the housing. Through the above devices, it is beneficial to control the fuel flow rate.

[0010] According to a circulating filtration fuel filter of the present utility model, a limiting groove is provided on the side surface of the housing, and the left and right end surfaces of the support plate are located inside the limiting groove. Through the above devices, it is beneficial to the stability of the installation.

[0011] A circulating filtration fuel filter according to the present utility model, a flow guiding plate is fixedly connected to the lower bottom wall of the upper filter, and a support ring is fixedly connected to the lower bottom wall of the lower filter. Through the above devices, it is beneficial to support and ensure the stability of the filter element.

[0012] Advantageous effects

[0013] 1. Compared with the prior art, in this circulating filtration fuel filter, by installing the upper filter and the lower filter inside the housing, a relatively enclosed environment can be provided for the internal components, avoiding the influence of the external environment on the filter, achieving efficient filtration of the fuel, removing impurities and particulate matters in the fuel, and being beneficial to improving the cleanliness of the fuel.

[0014] 2. Compared with the prior art, in this circulating filtration fuel filter, by arranging a circulation pump, an upper circulation pipe and a lower circulation pipe on the outer sides of the upper and lower filters inside the housing, a closed-loop fuel circulation system can be formed, continuously circulating and filtering the fuel inside the upper and lower filters until the required cleanliness is achieved, which is beneficial to improving the purity of the fuel. Description of the drawings

[0015] The present utility model will be further described below in conjunction with the drawings and embodiments;

[0016] Figure 1 It is the right view structure diagram of the circulating filtration fuel filter of the present utility model;

[0017] Figure 2 It is the left view structure diagram of the circulating filtration fuel filter of the present utility model;

[0018] Figure 3 It is the internal structure diagram of the circulating filtration fuel filter of the present utility model;

[0019] Figure 4 It is the sectional structure diagram of the circulating filtration fuel filter of the present utility model.

[0020] Legend description:

[0021] 1. Housing; 2. Housing door; 3. Lock handle; 4. Input pipe; 5. Upper filter; 6. Lower filter; 7. Filter element; 8. Flow guiding plate; 9. Support plate; 10. Support ring; 11. Output pipe; 12. Connecting pipe; 13. Valve; 14. Circulation pump; 15. Upper circulation pipe; 16. Lower circulation pipe. Specific embodiments

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model. However, it should not be construed as a limitation on the protection scope of the present utility model.

[0023] Referring to Figures 1-4 , an embodiment of a circulating filtration fuel filter of the present utility model includes: a housing 1, which serves as the main structure for protecting and accommodating the filter, protecting the internal components from the external environment, and providing a closed space for fuel filtration and circulation. The front surface of the housing 1 is rotatably connected to a housing door 2 through a hinge for opening and closing the housing door 2. The front surface of the housing door 2 is movably connected to a locking handle 3 for locking the housing door 2. A plurality of support plates 9 are movably connected to the left and right inner walls of the housing 1 for supporting and fixing the upper filter 5 and the lower filter 6 to ensure their stability and position accuracy. A limiting groove is provided on the side surface of the housing 1, and the left and right end faces of the support plate 9 are located inside the limiting groove for positioning the support plate 9. The upper filter 5 is fixedly connected inside the support plate 9 for initially filtering impurities in the fuel. A diversion plate 8 is fixedly connected to the lower bottom wall of the upper filter 5 for guiding the fuel that has been initially filtered to flow to the lower filter 6. The lower filter 6 is fixedly connected inside the support plate 9 for receiving the fuel flowing down from the upper filter 5 for further filtration. A support ring 10 is fixedly connected to the lower bottom wall of the lower filter 6 for supporting the filter element 7.

[0024] The filter element 7 is fixedly connected to the side inner walls of the upper filter 5 and the lower filter 6 for filtering impurities and particulate matter in the fuel. A connecting pipe 12 is fixedly connected to the lower surface of the upper filter 5 for the fuel that has been initially filtered by the upper filter 5 to flow into the lower filter 6. The lower end of the connecting pipe 12 is fixedly connected to the upper surface of the lower filter 6. An input pipe 4 is fixedly connected to the upper surface of the upper filter 5 for introducing the fuel to be filtered into the filter. The input pipe 4 is in communication with the upper filter 5 and penetrates through the upper surface of the housing 1. An output pipe 11 is fixedly connected to the lower surface of the lower filter 6 for outputting the filtered fuel. The output pipe 11 is in communication with the lower filter 6 and penetrates through the lower surface of the housing 1. Valves 1 are provided on the side surfaces of the connecting pipe 12, the output pipe 11, and the input pipe 4 for controlling the flow direction and flow rate of the fuel, and all are located inside the housing 1.

[0025] The upper surface of the lower filter 6 is fixedly connected with a circulation pump 14 for providing the power of circulation. The input end of the circulation pump 14 is fixedly connected with a lower circulation pipe 16 for pumping the fuel in the lower filter 6 back to the input end of the circulation pump 14. The lower end of the lower circulation pipe 16 is fixedly connected to the lower surface of the lower filter 6, and the lower circulation pipe 16 communicates with the lower filter 6. The output end of the circulation pump 14 is fixedly connected with an upper circulation pipe 15 for conveying the fuel pressurized by the circulation pump 14 back to the upper filter 5 for re-filtering. The upper end of the upper circulation pipe 15 is fixedly connected to the upper surface of the upper filter 5, and the upper circulation pipe 15 communicates with the upper filter 5.

[0026] Working principle: The fuel enters the upper filter 5 through the input pipe 4 at the top of the filter. The input pipe 4 directly communicates with the inside of the upper filter 5 to ensure that the fuel can smoothly enter the filtration system. Inside the upper filter 5, the fuel first passes through the filter element 7 for preliminary filtration to remove larger particulate impurities and contaminants in the fuel. The preliminarily filtered fuel is then evenly guided by the flow guide plate 8 on the lower bottom wall of the upper filter 5 to the connecting pipe 12 and conveyed to the lower filter 6. The flow guide plate 8 ensures that the fuel can evenly enter the lower filter 6, thereby improving the filtration efficiency. In the lower filter 6, the fuel passes through the filter element 7 again for deep filtration to further remove tiny particles and contaminants in the fuel, significantly improving the cleanliness of the fuel. The filtered clean fuel flows out of the filter through the output pipe 11 on the lower surface of the lower filter 6 and is supplied to the engine for use. The valve 13 on the output pipe 11 can control the fuel flow rate and closed state to meet the requirements of the engine under different working conditions. To continuously maintain the cleanliness of the fuel, a circulation pump 14 and a circulation pipeline (upper circulation pipe 15 and lower circulation pipe 16) are arranged outside the filter. The circulation pump 14 pumps the fuel at the bottom of the lower filter 6 through the lower circulation pipe 16 and sends it back to the upper filter 5 through the upper circulation pipe 15 for re-filtering, ensuring that the fuel continuously circulates and is repeatedly filtered inside the filter, thereby achieving a higher cleanliness. When the filter elements 7 in the upper filter 5 and the lower filter 6 reach the service life or the filtration effect deteriorates, they need to be replaced. At this time, by opening the shell door 2 and unlocking the locking handle 3, the detachable design of the support plate 9 and the limit groove makes the replacement process of the filter element more convenient and fast, reducing the maintenance time and cost.

[0027] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the technical field to which it belongs, various changes can be made without departing from the gist of the present invention.

Claims

1. A circulating filtration fuel filter, characterized in that, Including: A housing (1), the front surface of the housing (1) is rotatably connected to a housing door (2) through a hinge, the front surface of the housing door (2) is movably connected to a lock handle (3), the left and right inner walls of the housing (1) are movably connected with a plurality of support plates (9), the inside of the support plate (9) is fixedly connected with an upper filter (5), the inside of the support plate (9) is fixedly connected with a lower filter (6), the side inner walls of the upper filter (5) and the lower filter (6) are fixedly connected with a filter element (7), the lower surface of the upper filter (5) is fixedly connected with a connecting pipe (12), the lower end of the connecting pipe (12) is fixedly connected to the upper surface of the lower filter (6), the upper surface of the upper filter (5) is fixedly connected with an input pipe (4), the lower surface of the lower filter (6) is fixedly connected with an output pipe (11), the upper surface of the lower filter (6) is fixedly connected with a circulation pump (14), the input end of the circulation pump (14) is fixedly connected with a lower circulation pipe (16), and the output end of the circulation pump (14) is fixedly connected with an upper circulation pipe (15).

2. The circulating filtration fuel filter according to claim 1, characterized in that, The input pipe (4) is in communication with the upper filter (5), and the input pipe (4) penetrates through the upper surface of the housing (1).

3. A cyclic filtration fuel filter according to claim 1, characterized in that, The output pipe (11) is in communication with the lower filter (6), and the output pipe (11) penetrates through the lower surface of the housing (1).

4. A cyclic filtration fuel filter according to claim 1, characterized in that, The upper end of the upper circulation pipe (15) is fixedly connected to the upper surface of the upper filter (5), and the upper circulation pipe (15) is in communication with the upper filter (5).

5. A circulating filtration fuel filter according to claim 1, characterized in that, The lower end of the lower circulation pipe (16) is fixedly connected to the lower surface of the lower filter (6), and the lower circulation pipe (16) is in communication with the lower filter (6).

6. The circulating filtration fuel filter according to claim 1, wherein Valves (13) are provided on the side surfaces of the connecting pipe (12), the output pipe (11), and the input pipe (4), and are all located inside the housing (1).

7. A cyclic filtration fuel filter according to claim 1, characterized in that, A limiting groove is provided on the side surface of the housing (1), and the left and right end faces of the support plate (9) are located inside the limiting groove.

8. A cyclic filtration fuel filter according to claim 1, characterized in that, A flow guide plate (8) is fixedly connected to the lower bottom wall of the upper filter (5), and a support ring (10) is fixedly connected to the lower bottom wall of the lower filter (6).

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