Double-filtering type fuel filter

Abstract

The utility model discloses a double filtration type fuel filter which comprises a machine shell, a detachable filter frame, a large filter element and a small filter element, an oil inlet hole is formed in the edge of the top of the machine shell, the detachable filter frame is detachably installed in the middle of the machine shell, the large filter element and the small filter element are detachably installed in the detachable filter frame, and the large filter element and the small filter element are detachably installed in the machine shell. The small filter element is located on the inner side of the large filter element, the detachable filter frame comprises a top cover, an oil outlet hole, insertion rods, a connecting piece, a bottom plate and a nut, the top cover is detachably fixed to the machine shell through threads, the oil outlet hole is formed in the top cover, the two insertion rods penetrating through the bottom plate are fixed to the lower side of the top cover, and the lower ends of the two insertion rods are fixedly connected with the connecting piece. The connecting piece is located on the upper side of the bottom plate, threads are arranged at the lower end of the inserting rod, and a nut is detachably installed on the inserting rod on the lower side of the bottom plate. According to the utility model, double filtration is realized, so that the impurity removal effect is better; the disassembly is convenient, and the filter element is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a double-filter fuel filter. Background Art

[0002] A filter is a component that filters impurities or gases through a filter paper. A fuel filter is a type of filter used to filter out impurities and moisture in fuel.

[0003] Most of the existing fuel filters are single-filter filtration. When the fuel quality is poor and mixed with more impurities, it is difficult for single-filter filtration to fully filter out the impurities. In addition, after the filter element is used for a long time, it will be blocked by impurities. However, the existing fuel filter is an integrated design, making it difficult to replace the filter element separately. The entire filter needs to be replaced. Therefore, in view of the above situation, there is an urgent need to develop a double-filter fuel filter with better impurity removal effect, convenient disassembly, and easy replacement of the filter element to overcome the deficiencies in current practical applications and meet current requirements. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a double-filter fuel filter to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The double-filter fuel filter includes a housing, a detachable filter rack, a large filter element, and a small filter element. An oil inlet hole is provided at the top edge position of the housing. A detachable filter rack is detachably installed in the middle position of the housing. The large filter element and the small filter element are detachably installed in the detachable filter rack. The small filter element is located inside the large filter element. The detachable filter rack includes: a top cover, an oil outlet hole, a plugging rod, a connecting piece, a bottom plate, and a nut. The top cover is detachably fixed to the housing by threads. The top cover is provided with an oil outlet hole. Two plugging rods penetrating the bottom plate are fixed to the lower side of the top cover. The lower ends of the two plugging rods are fixedly connected with a connecting piece. The connecting piece is located above the bottom plate. The lower ends of the plugging rods are provided with threads. A nut is detachably installed on the plugging rod at the lower side of the bottom plate.

[0007] Preferably: Two disassembly handles are fixed to the top cover.

[0008] Preferably: The top cover is provided with a first card slot for clamping the upper ends of the large filter element and the small filter element.

[0009] Preferably: The bottom plate is provided with a second card slot for clamping the lower ends of the large filter element and the small filter element.

[0010] Preferably: A water storage shell is detachably installed at the bottom of the housing by threads.

[0011] The beneficial effects of the present utility model are as follows: When the double-filter fuel filter is in use, fuel is injected into the casing through the fuel inlet hole, and then passes through the large filter element and the small filter element and is output from the fuel outlet hole. The fuel is double-filtered by the large filter element and the small filter element to fully filter out impurities and moisture in the fuel. Since the density of water is greater than that of fuel, water will gradually deposit in the water storage casing and be collected. Impurities will adhere to the large filter element and the small filter element. After using for a period of time, the water storage casing can be removed to drain the water, and then the detachable filter rack can be screwed out of the casing, and then the nut can be unscrewed, and the bottom plate can be pulled down from the insertion rod, so that the bottom plate is separated from the top cover, so as to remove and replace the large filter element and the small filter element. In summary, the present utility model has double filtration and better impurity removal effect; it is convenient to disassemble and is convenient for replacing the filter element. Description of the Drawings

[0012] Figure 1 is a schematic three-dimensional structure of the present utility model Figure 1 。

[0013] Figure 2 is a schematic three-dimensional structure of the present utility model Figure 2 。

[0014] Figure 3 is a cross-sectional view of the interior of the present utility model.

[0015] Figure 4 is an exploded view of the present utility model.

[0016] Figure 5 is a schematic view of a partial structure of the present utility model Figure 1 。

[0017] Figure 6 is of the present utility model Figure 5 schematic diagram of the disassembled state.

[0018] Figure 7 is a schematic view of a partial structure of the present utility model Figure 2 。

[0019] Legend:

[0020] 1. Casing; 101. Fuel inlet hole; 2. Detachable filter rack; 201. Top cover; 2011. Disassembly handle; 2012. First card slot; 202. Fuel outlet hole; 203. Insertion rod; 204. Connecting piece; 205. Bottom plate; 2051. Second card slot; 206. Nut; 3. Water storage casing; 4. Large filter element; 5. Small filter element. Detailed Embodiment

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0022] The following gives specific embodiments.

[0023] See Figures 1 to 7 , in the embodiment of the present utility model, a dual-filter fuel filter includes a casing 1, a detachable filter rack 2, a water storage casing 3, a large filter element 4 and a small filter element 5. An oil inlet hole 101 is provided at the top edge position of the casing 1. A detachable filter rack 2 is detachably installed at the middle position of the casing 1. A large filter element 4 and a small filter element 5 are detachably installed in the detachable filter rack 2. The small filter element 5 is located inside the large filter element 4. The detachable filter rack 2 includes: a top cover 201, an oil outlet hole 202, a plugging rod 203, a connecting piece 204, a bottom plate 205 and a nut 206. The top cover 201 is detachably fixed to the casing 1 by a thread. Two disassembly handles 2011 are fixed on the top cover 201. A person can turn the disassembly handle 2011 to screw the top cover 201. An oil outlet hole 202 is provided on the top cover 201. Two plugging rods 203 penetrating the bottom plate 205 are fixed to the lower side of the top cover 201. The lower ends of the two plugging rods 203 are fixedly connected with a connecting piece 204. The connecting piece 204 is located on the upper side of the bottom plate 205. A thread is provided at the lower end of the plugging rod 203. A nut 206 is detachably installed on the plugging rod 203 on the lower side of the bottom plate 205. A first card slot 2012 for clamping the upper ends of the large filter element 4 and the small filter element 5 is provided on the top cover 201. A second card slot 2051 for clamping the lower ends of the large filter element 4 and the small filter element 5 is provided on the bottom plate 205. The water storage casing 3 is detachably installed at the bottom of the casing 1 by a thread.

[0024] Working principle: When the dual-filter fuel filter is in use, fuel is injected into the casing 1 from the oil inlet hole 101, and then passes through the large filter element 4 and the small filter element 5 and is output from the oil outlet hole 202. The fuel is double-filtered by the large filter element 4 and the small filter element 5 to fully filter out impurities and moisture in the fuel. The density of the moisture is greater than that of the fuel, and it will gradually deposit into the water storage casing 3 and be collected. The impurities will adhere to the large filter element 4 and the small filter element 5. After using for a period of time, the water storage casing 3 can be removed to drain the moisture, then the detachable filter rack 2 is screwed out of the casing 1, and then the nut 206 is unscrewed, and the bottom plate 205 is pulled down from the plugging rod 203, so that the bottom plate 205 is separated from the top cover 201, so as to remove and replace the large filter element 4 and the small filter element 5.

[0025] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims

1. Double filter fuel filter, characterized in that: The invention comprises a casing (1), a detachable filter frame (2), a large filter element (4) and a small filter element (5); an oil inlet hole (101) is arranged at the top edge of the casing (1); a detachable filter frame (2) is detachably mounted at the middle of the casing (1); a large filter element (4) and a small filter element (5) are detachably mounted in the detachable filter frame (2); the small filter element (5) is located on the inner side of the large filter element (4); and the detachable filter frame (2) comprises: a top cover (201), an oil outlet hole (202), a plug-in rod (203), a connecting piece (204), and a bottom plate (205). and nuts (206), the top cover (201) being detachably fixed to the housing (1) via threads, the top cover (201) being provided with an oil outlet hole (202), two plug-in rods (203) penetrating the bottom plate (205) being fixed to the bottom side of the top cover (201), the lower ends of the two plug-in rods (203) being fixedly connected with connecting pieces (204), the connecting pieces (204) being located on the upper side of the bottom plate (205), the lower ends of the plug-in rods (203) being provided with threads, and nuts (206) being detachably mounted on the plug-in rods (203) on the lower side of the bottom plate (205).

2. The dual-filtration fuel filter according to claim 1, characterized in that: Two disassembly handles (2011) are fixed on the top cover (201).

3. The dual-filtration fuel filter according to claim 1, characterized in that: The top cover (201) is provided with a first clamping groove (2012) for clamping the upper ends of the large filter element (4) and the small filter element (5).

4. The dual-filtration fuel filter according to claim 1, characterized in that: The bottom plate (205) is provided with a second clamping groove (2051) for clamping the lower ends of the large filter element (4) and the small filter element (5).

5. The dual-filtration fuel filter according to claim 1, characterized in that: A water storage shell (3) is detachably mounted on the bottom of the casing (1) via threads.

Images