Fuel filter

Abstract

The utility model relates to a fuel oil filter, and relates to the field of fuel oil filters, the fuel oil filter comprises a shell and a filter element, an oil inlet hole and an oil outlet hole are formed in the shell, the oil inlet hole is used for injecting fuel oil into the shell, the oil outlet hole is used for discharging the filtered fuel oil in the shell, and the filter element comprises outer side filter paper, a water repellent net and a mounting cylinder; the mounting cylinder is of a cylinder structure provided with a through hole, the water repellent net is of a cylinder structure provided with a bottom, the mounting cylinder is sleeved with the water repellent net, the outer side filter paper is of a cylinder structure, the water repellent net is sleeved with the outer side filter paper, and the filter element is arranged in the shell. The fuel oil filter has the effect that the fuel oil filter can filter water in fuel oil.

Description

Technical Field

[0001] The present application relates to the field of fuel filters, and in particular to a fuel filter. Background Art

[0002] Fuel filters can filter solid impurities in the fuel of automobiles and other mechanical equipment, thereby reducing the chance of solid impurities entering the interior of engines and other machinery, reducing the degree of impurity accumulation, and improving the service life and performance of power equipment. They are widely used in fuel machinery and equipment.

[0003] The relevant fuel filter includes a housing and a filter element. The housing is a sealed shell structure. The filter element is arranged in the housing. An oil inlet and an oil outlet are provided on the housing. The oil inlet is used to inject fuel into the housing. After the fuel is injected into the housing, it is located on the outside of the filter element. The filter element is made of filter paper. The fuel enters the middle of the filter element through the filter paper. The solid impurities in the fuel accumulate on the outer surface of the filter paper. The filtered fuel is discharged through the oil outlet, thereby reducing the rate of accumulation of solid impurities in fuel machinery and equipment.

[0004] The above-mentioned related technical solutions have the following defects: during the use of fuel, gases such as water vapor are easily mixed into the fuel, resulting in a high water content in the fuel. Water is destructive to fuel equipment and can easily reduce the service life of the fuel equipment. It is difficult for the fuel filter to filter out water in the fuel, causing inconvenience. Utility Model Content

[0005] In order to enable the fuel filter to filter water in the fuel, the present application provides a fuel filter.

[0006] The fuel filter provided in this application adopts the following technical solution:

[0007] A fuel filter comprises a housing and a filter element. The housing is provided with an oil inlet and an oil outlet. The oil inlet is used to inject fuel into the housing, and the oil outlet is used to discharge the fuel filtered in the housing. The filter element comprises an outer filter paper, a water-repellent net and a mounting cylinder. The mounting cylinder is a cylindrical structure with a through hole. The water-repellent net is a cylindrical structure with a bottom. The water-repellent net is sleeved on the mounting cylinder. The outer filter paper is a cylindrical structure. The outer filter paper is sleeved outside the water-repellent net. The filter element is arranged in the housing.

[0008] By adopting the above technical solution, a filter element is arranged in the housing, so that when the fuel enters the housing from the oil inlet, the fuel flows to the outside of the filter element, so that the fuel can gradually pass through the outer filter paper. In the process of the fuel passing through the outer filter paper, solid impurities in the fuel are filtered on the outer surface of the outer filter paper. After the fuel passes through the outer filter paper, the fuel continues to pass through the water-repellent net. The surface of the water-repellent net is provided with a hydrophobic layer, and the moisture in the fuel is difficult to pass through the water-repellent net. After the fuel passes through the water-repellent net, the water content in the fuel decreases, and the filtered fuel flows out through the oil outlet, thereby achieving the effect of reducing the water content in the fuel.

[0009] Optionally, a mounting frame is provided in the shell, the mounting frame is a disc structure, a socket is provided at the center of the mounting frame, the water-repellent net and the mounting cylinder are inserted into the socket, and the outer filter paper is provided on the mounting frame.

[0010] By adopting the above technical solution, a mounting bracket is provided in the housing so that the mounting bracket is clamped in the housing and supports the filter element. When the fuel flows into the housing from the oil inlet, the fuel is located above the mounting bracket. When the fuel passes through the outer filter paper and enters the middle of the filter element, the fuel can flow from the insertion hole to the bottom of the mounting bracket. As the fuel gradually accumulates, the fuel can gradually penetrate the water-repellent net and enter the water-repellent net. When the oil is pumped out at the oil outlet, the filtered fuel in the water-repellent net can be pumped out, thereby reducing the water content in the fuel.

[0011] Optionally, a base frame is provided in the socket, and the base frame is provided lower than the mounting frame.

[0012] By adopting the above technical solution, by arranging a base frame in the socket and placing the base frame at a position lower than the mounting frame, when fuel accumulates under the housing, the fuel liquid level first contacts the water-repellent net. When the housing is pumped out of the oil, the fuel needs to pass through the water-repellent net before flowing out of the oil outlet, thereby reducing the probability of fuel that has not undergone the water filtering process being directly pumped out of the oil outlet.

[0013] Optionally, a water storage chamber is formed at the bottom of the shell, and a threaded rotating handle is provided on the outer wall of the shell. The threaded rotating handle is connected to the water storage chamber, and the threaded rotating handle is used to discharge the clean water in the water storage chamber out of the shell.

[0014] By adopting the above technical solution, the water outlet pipe is connected to the water storage chamber, so that the water in the water storage chamber can flow out from the water outlet pipe, and the threaded rotating handle plays the effect of controlling the on and off of the water outlet pipe. When the water storage chamber is full of fuel that has not been filtered, the fuel can accumulate in the water storage chamber. When there is a large amount of clean water in the water storage chamber, the threaded rotating handle is activated and the clean water can be discharged from the water outlet pipe, thereby reducing the amount of water accumulation in the shell and improving the water filtering performance of the filter element.

[0015] Optionally, the threaded rotating handle includes a threaded barrel and a threaded part. The threaded barrel is a cylindrical structure with an opening at one end. The threaded part passes through the end face of the threaded barrel and is threadedly connected to the threaded barrel. A water outlet pipe is connected to the shell. One end of the water outlet pipe is connected to the water storage chamber, and the other end is connected to the middle of the threaded barrel. The end of the threaded part extends from the opening of the threaded barrel, and a sealing part is provided at the end of the threaded part. The sealing part is used to abut against the opening at the end of the threaded barrel.

[0016] By adopting the above technical solution, by setting a threaded part in the threaded barrel, the user can make the threaded part slide in the threaded barrel by screwing the threaded part, so that the blocking part can abut against the end of the threaded barrel, thereby achieving the effect of controlling the on and off of the water outlet pipe.

[0017] Optionally, the length direction of the threaded barrel is parallel to the length direction of the shell.

[0018] By adopting the above technical solution and arranging the threaded cylinder and the shell vertically, the water in the water storage chamber can be automatically discharged under the action of gravity, reducing the steps of arranging a pumping mechanism on the water outlet pipe and facilitating use.

[0019] Optionally, a clearance groove is provided on the side wall of the threaded member.

[0020] By adopting the above technical solution, by opening a clearance groove on the side wall of the threaded part, when the sealing part is away from the threaded barrel, a large gap exists between the threaded part and the threaded barrel, and the cross-section of the threaded part accounts for a smaller proportion of the cross-section of the threaded barrel, thereby allowing the clean water in the water storage chamber to be discharged faster.

[0021] Optionally, a liquid level sensor is provided at the bottom of the shell, and the liquid level sensor is used to detect the resistance of the liquid in the water storage chamber.

[0022] By adopting the above technical solution, a liquid level sensor is arranged at the bottom of the shell, and the liquid level sensor is provided with a wire connector on the side outside the shell, and is provided with a positive electrode and a negative electrode on the side inside the shell. When the liquid submerges the positive electrode and the negative electrode, the liquid is electrically connected to the positive electrode and the negative electrode. The liquid level sensor can detect the properties of the liquid in the water storage chamber by detecting the resistance between the positive electrode and the negative electrode. When clean water submerges the positive electrode and the negative electrode, the data detected by the liquid level sensor is different from the data when the positive electrode and the negative electrode are submerged by fuel, thereby facilitating the user to control the action of the threaded rotating handle and discharge the water in the shell.

[0023] In summary, the beneficial technical effects of this application are:

[0024] 1. By installing a filter element in the housing, when fuel enters the housing through the oil inlet, the fuel flows to the outside of the filter element, allowing the fuel to gradually pass through the outer filter paper. As the fuel passes through the outer filter paper, solid impurities in the fuel are filtered onto the outer surface of the outer filter paper. After passing through the outer filter paper, the fuel continues to pass through the water-repellent mesh. The surface of the water-repellent mesh is provided with a hydrophobic layer, which makes it difficult for water in the fuel to pass through the mesh. After the fuel passes through the mesh, the water content in the fuel decreases, and the filtered fuel flows out through the oil outlet, achieving the effect of reducing the water content in the fuel.

[0025] 2. By installing a base frame inside the socket and positioning it lower than the mounting frame, when fuel accumulates under the housing, the fuel level first contacts the water-repellent mesh. When the housing is pumped, the fuel must pass through the water-repellent mesh before flowing out of the oil outlet, reducing the chance of unfiltered fuel being pumped directly out of the oil outlet.

[0026] 3. By connecting the water outlet pipe to the water storage chamber, the water in the water storage chamber can flow out from the water outlet pipe. The threaded rotating handle plays the role of controlling the on-off effect of the water outlet pipe. When the water storage chamber is full of fuel that has not been filtered, the fuel can accumulate in the water storage chamber. When there is a large amount of clean water in the water storage chamber, the threaded rotating handle is activated and the clean water can be discharged from the water outlet pipe, reducing the amount of water accumulation in the shell and improving the water filtering performance of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of the embodiment of the present application Figure 1 .

[0028] Figure 2 This is a schematic diagram of the overall structure of the embodiment of the present application Figure 2 .

[0029] Figure 3 It is a cross-sectional view of the upper shell of an embodiment of the present application.

[0030] Figure 4 It is a structural schematic diagram of the filter element of an embodiment of the present application.

[0031] Figure 5 It is a structural schematic diagram of the installation tube of an embodiment of the present application.

[0032] Figure 6 Schematic diagram of the structure of the outer filter paper of the embodiment of the present application.

[0033] Figure 7 It is a structural schematic diagram of the mounting frame of an embodiment of the present application.

[0034] Figure 8 It is a structural schematic diagram of the threaded part of an embodiment of the present application.

[0035] Figure numerals: 1. Shell; 11. Upper shell; 111. Oil inlet; 112. Oil outlet; 12. Lower shell; 121. Water storage chamber; 122. Water outlet pipe; 13. Mounting frame; 131. Socket; 132. Base frame; 2. Filter element; 21. Outer filter paper; 22. Water-repellent net; 23. Mounting cylinder; 3. Liquid level sensor; 4. Threaded rotating handle; 41. Threaded cylinder; 42. Threaded part; 421. Make way groove; 43. Sealing part. DETAILED DESCRIPTION

[0036] The present application is further described in detail below with reference to the accompanying drawings.

[0037] The present application embodiment discloses a fuel filter, referring to Figure 1 、 Figure 2 and Figure 3 , including a shell 1 and a filter element 2, the shell 1 is a sealed shell structure, a chamber is opened in the shell 1, the filter element 2 is arranged in the shell 1, the shell 1 includes an upper shell 11 and a lower shell 12, the upper shell 11 and the lower shell 12 are detachably connected and sealed, an oil inlet hole 111 and an oil outlet hole 112 are opened on the upper shell 11, the oil inlet hole 111 and the oil outlet hole 112 are both used to connect the oil pipe, unfiltered fuel enters the shell 1 through the oil inlet hole 111, the fuel is filtered by the filter element 2 and flows out from the oil outlet hole 112, so that the filter element 2 can filter solid impurities in the fuel.

[0038] Reference Figure 4 、 Figure 5 and Figure 6 The filter element 2 includes an outer filter paper 21, a water-repellent net 22, and a mounting tube 23. The mounting tube 23 is a cylindrical structure, and the water-repellent net 22 is mounted outside the mounting tube 23. The water-repellent net 22 is a cylindrical structure with a bottom, and the water-repellent net 22 includes side walls and a bottom of the mounting tube 23. The outer filter paper 21 is a cylindrical structure, and is mounted outside the water-repellent net 22. The bottom of the water-repellent net 22 is set on the side of the mounting tube 23 away from the oil outlet 112. When the filter element 2 is installed in the housing 1, fuel flows into the housing 1 from the oil inlet 111. The fuel is located outside the outer filter paper 21. The fuel passes through the outer filter paper 21 and enters the interior of the filter element 2. The filtered fuel continues to flow through the water-repellent net 22. The water-repellent net 22 is made of PET and is coated with a hydrophobic agent on its surface. The water-repellent net 22 is used to filter moisture from the fuel. When the fuel passes through the water-repellent net 22 , the vehicle interior engine can absorb the fuel through the oil outlet 112 , thereby increasing the purity of the fuel and achieving the effect of protecting the vehicle interior engine.

[0039] Reference Figure 4 and Figure 7A water storage chamber 121 is formed in the lower shell 12. The water storage chamber 121 is used to store the water filtered by the filter element 2. A mounting bracket 13 is provided between the upper shell 11 and the lower shell 12. The mounting bracket 13 is located in the housing 1 and is used to support the bottom of the filter element 2. The mounting bracket 13 is a circular flat plate structure. A socket 131 is provided at the center of the mounting bracket 13. A base frame 132 is provided in the socket 131. The base frame 132 is provided with an oil leakage hole. The base frame 132 is arranged below the mounting bracket 13. When the filter element 2 is installed on the mounting bracket 13, the mounting cylinder 23 and the water-repellent net 22 are inserted into the socket 131 and abut against the top of the base frame 132, and the outer filter paper 21 abuts against the mounting bracket 13. After the fuel passes through the outer filter paper 21, the filtered fuel flows into the water storage chamber 121 through the oil leakage hole on the base frame 132. The fuel gradually accumulates in the water storage chamber 121 until the fuel submerges the bottom of the water repellent net 22 and penetrates. The fuel that passes through the water repellent net 22 is filtered and has a lower water content. The fuel extracted through the oil outlet 112 contains fewer impurities.

[0040] Reference Figure 1 and Figure 8 The lower housing 12 is provided with a liquid level sensor 3 and a threaded rotary handle 4. The liquid level sensor 3 is disposed at the bottom of the lower housing 12, passes through the lower housing 12, and is sealed thereto. The liquid level sensor 3 is provided with a positive electrode and a negative electrode. When liquid accumulates in the water storage chamber 121, the liquid submerges the positive and negative electrodes, thereby connecting the circuit. The liquid level sensor 3 can detect the resistance of the liquid between the positive and negative electrodes, thereby detecting the properties of the liquid in the water storage chamber 121. As the filter element 2 filters water from the fuel, the amount of water accumulated in the water storage chamber 121 gradually increases, and the substance submerging the liquid level sensor 3 changes from fuel to water, causing the liquid level sensor 3 to emit different electrical signals, thereby achieving the effect of detecting the properties of the liquid in the water storage chamber 121. When a large amount of water is stored in the water storage chamber 121, the water in the water storage chamber 121 can be discharged using the threaded rotary handle 4.

[0041] Reference Figure 1 、 Figure 2 and Figure 8The lower shell 12 is connected to a water outlet pipe 122. The threaded rotating handle 4 includes a threaded barrel 41 and a threaded member 42. The length direction of the threaded barrel 41 is parallel to the length direction of the shell 1. When installed in the car, the threaded barrel 41 is arranged vertically. An opening is provided at the lower end of the threaded barrel 41. The internal cavity of the threaded barrel 41 is connected to the lower shell 12 through the water outlet pipe 122. The moisture in the lower shell 12 can enter the water outlet pipe 122 and flow out from the opening at the lower end of the threaded barrel 41. The threaded member 42 is inserted into the threaded barrel 41 and is threadedly connected to the threaded barrel 41. The bottom of the threaded member 42 extends out from the bottom opening of the threaded barrel 41. A sealing member 43 is connected to the bottom of the threaded member 42. The sealing member 43 is connected to the bottom end of the threaded member 42. The sealing member 43 is used to abut against the lower end surface of the threaded barrel 41. The sealing member 43 is made of rubber material. When the sealing member 43 abuts against the lower end of the threaded barrel 41, the liquid is difficult to flow out of the threaded barrel 41. By controlling the rotation of the threaded member 42, the threaded member 42 can be rotated relative to the threaded barrel 41, and then the sealing member 43 is moved away from the threaded barrel 41, so that the liquid in the water storage chamber 121 flows out, thereby achieving the effect of discharging the moisture in the shell 1.

[0042] Reference Figure 8 The threaded member 42 is provided with a plurality of relief grooves 421, which are formed on the side surface of the threaded member 42 near the sealing member 43. The diameter of the threaded member 42 is the same as the inner diameter of the threaded barrel 41. When the sealing member 43 is disengaged from the threaded barrel 41, the water in the water storage chamber 121 can flow out of the threaded barrel 41 through the relief grooves 421.

[0043] The implementation principle of the embodiment of the present application is: by arranging a water-repellent net 22 inside the outer filter paper 21, the outer filter paper 21 filters solid impurities in the fuel, and the water-repellent net 22 filters water in the fuel, thereby improving the quality of the fuel; by arranging a threaded rotating handle 4 on the shell 1, the water in the water storage chamber 121 in the shell 1 can be discharged through the threaded rotating handle 4, so that the filter element 2 can maintain better filtration quality.

[0044] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A fuel filter, characterized in that: The invention comprises a housing (1) and a filter element (2). The housing (1) is provided with an oil inlet hole (111) and an oil outlet hole (112). The oil inlet hole (111) is used to inject fuel into the housing (1), and the oil outlet hole (112) is used to discharge the fuel filtered in the housing (1). The filter element (2) comprises an outer filter paper (21), a water-repellent net (22) and a mounting cylinder (23). The mounting cylinder (23) is a cylindrical structure with a through hole. The water-repellent net (22) is a cylindrical structure with a bottom. The water-repellent net (22) is sleeved on the mounting cylinder (23). The outer filter paper (21) is a cylindrical structure. The outer filter paper (21) is sleeved outside the water-repellent net (22). The filter element (2) is arranged in the housing (1).

2. A fuel filter according to claim 1, characterized in that: A mounting frame (13) is provided in the housing (1). The mounting frame (13) is a disc structure. A socket (131) is provided at the center of the mounting frame (13). The water-repellent net (22) and the mounting cylinder (23) are inserted into the socket (131). The outer filter paper (21) is provided on the mounting frame (13).

3. A fuel filter according to claim 2, characterized in that: A base frame (132) is provided in the socket (131), and the base frame (132) is provided lower than the mounting frame (13).

4. A fuel filter according to claim 1, characterized in that: A water storage chamber (121) is formed at the bottom of the shell (1), and a threaded rotating handle (4) is provided on the outer wall of the shell (1). The threaded rotating handle (4) is in communication with the water storage chamber (121), and the threaded rotating handle (4) is used to discharge clean water in the water storage chamber (121) out of the shell (1).

5. A fuel filter according to claim 4, characterized in that: The threaded rotating handle (4) comprises a threaded barrel (41) and a threaded member (42). The threaded barrel (41) is a cylindrical structure with an opening at one end. The threaded member (42) penetrates the end surface of the threaded barrel (41) and is threadedly connected to the threaded barrel (41). A water outlet pipe (122) is connected to the housing (1). One end of the water outlet pipe (122) is connected to the water storage chamber (121), and the other end is connected to the middle of the threaded barrel (41). The end of the threaded member (42) extends from the opening of the threaded barrel (41). A blocking member (43) is provided at the end of the threaded member (42). The blocking member (43) is used to abut against the end opening of the threaded barrel (41).

6. A fuel filter according to claim 5, characterized in that: The length direction of the threaded barrel (41) is parallel to the length direction of the housing (1).

7. A fuel filter according to claim 6, characterized in that: A clearance groove (421) is provided on the side wall of the threaded member (42).

8. The fuel filter according to claim 4, characterized in that: A liquid level sensor (3) is provided at the bottom of the housing (1), and the liquid level sensor (3) is used to detect the resistance of the liquid in the water storage chamber (121).

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