Plastic filter

Abstract

The utility model relates to a plastic filter, and relates to the technical field of filters, the plastic filter comprises a top cover, a plastic skeleton, a bottom cover, glass fiber filter paper and a bottom ring, the top cover is arranged at one end of the plastic skeleton, the bottom cover is arranged at one end, away from the top cover, of the plastic skeleton, a flow channel is formed in the plastic skeleton, and the glass fiber filter paper is arranged in the flow channel. The end, away from the plastic framework, of the bottom cover is provided with an air inlet communicating with the flow channel, the side wall of the plastic framework is provided with a plurality of exhaust holes communicating with the flow channel, and the glass fiber filter paper is coaxially arranged on the inner circumferential wall of the plastic framework. Two buckles are arranged on the side, close to the bottom cover, of the bottom ring, the connecting line between the two buckles passes through the axis of the bottom ring, clamping grooves allowing the buckles to be clamped in are formed in the side wall of the bottom cover, connecting strips are arranged on the sides, close to each other, of the two buckles, and the two connecting strips are rotationally connected through a rotating shaft. The filter paper can be conveniently replaced.

Description

Technical Field

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

[0002] At present, filters as a liquid separation device have been widely used in many fields. Filter paper is a special equipment for the filtration industry. It is a purification equipment that came into being for the purpose of purifying the original ecological resources and the recycling of resources. Filter paper is now mainly used in the filtration of liquids such as water and oil, air filtration and related industries.

[0003] A silencer in the related technology includes a joint, a mounting cover, filter paper and a net barrel. The joint and the mounting cover are arranged opposite to each other, the net barrel is installed between the joint and the mounting cover, the filter paper is coaxially installed on the inner wall of the net barrel, and an air inlet for air intake is opened at one end of the joint away from the mounting cover. A fixing screw is passed through the mounting cover, and the fixing screw is threadedly connected to the joint. The fixing screw presses the net barrel and the mounting cover to the joint.

[0004] With respect to the above-mentioned related technologies, the inventor believes that when the filter paper needs to be replaced, it is necessary to use a screwdriver or other tool to disassemble the fixing screw, which is inconvenient. Utility Model Content

[0005] In order to facilitate the replacement of filter paper, the present application provides a plastic filter.

[0006] The present application provides a plastic filter that adopts the following technical solution:

[0007] A plastic filter comprises a top cover, a plastic frame, a bottom cover, glass fiber filter paper and a bottom ring, wherein the top cover is arranged at one end of the plastic frame, the bottom cover is arranged at the end of the plastic frame away from the top cover, a flow channel is provided inside the plastic frame, an air inlet interconnected with the flow channel is provided at the end of the bottom cover away from the plastic frame, a plurality of exhaust holes interconnected with the flow channel are provided on the side wall of the plastic frame, the glass fiber filter paper is coaxially arranged on the inner circumferential wall of the plastic frame, two buckles are provided on the side of the bottom ring close to the bottom cover, the connection line between the two buckles passes through the axis of the bottom ring, a slot for the buckles to be inserted is provided on the side wall of the bottom cover, a connecting strip is provided on the side where the two buckles are close to each other, and the two connecting strips are rotatably connected by a rotating shaft.

[0008] Through the above technical solution, when the filter paper needs to be replaced, the two connecting strips are pulled downward, and the two buckles are deformed inwardly under the drive of the connecting strips. When the buckles are out of the slots, the clamping ring can be removed, and the filter paper can be taken out for replacement, which facilitates the replacement of the filter paper.

[0009] Optionally, an embedding groove is formed on a side of the top cover close to the plastic frame, and an abutment groove is formed on a side of the bottom cover close to the plastic frame. One end of the plastic frame is inserted into the embedding groove, and the other end of the plastic frame is inserted into the abutment groove.

[0010] Through the above technical solution, during installation, one end of the plastic frame can be inserted into the embedding groove, and the other end can be inserted into the abutment groove to position the two ends of the plastic frame, thereby facilitating the installation of the plastic frame.

[0011] Optionally, the top cover is provided with a first sealing ring on the embedded groove wall, and the side wall of the plastic frame abuts the first sealing ring; the bottom cover is provided with a second sealing ring on the abutting groove wall, and the side wall of the plastic frame abuts the second sealing ring.

[0012] Through the above technical solution, the first sealing ring can seal the gap between the plastic frame and the embedded groove wall, and the second sealing ring can seal the gap between the plastic frame and the abutting groove wall, thereby reducing the risk of medium leakage and improving the sealing of the filter.

[0013] Optionally, the outer peripheral wall of the plastic frame is covered with long-fiber non-woven fabric.

[0014] Through the above technical solution, long fiber non-woven fabric is added to the outer layer, which can remove particulate impurities in the compressed air on the one hand, and greatly reduce the sound for a second time on the other hand, and the sound elimination effect is further improved.

[0015] Optionally, the inner peripheral wall of the bottom ring gradually expands from the side close to the bottom cover to the side far from the bottom cover.

[0016] Through the above technical solution, the flared shape of the bottom ring can increase the size of the insertion end of the bottom ring, thereby facilitating the insertion of the interface.

[0017] The beneficial effect of the utility model is that the two connecting strips can be pulled downward to disengage the buckles, thereby facilitating the disassembly of the bottom ring and further facilitating the replacement of the filter paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the plastic filter in this application.

[0019] Figure 2 is a cross-sectional view of the plastic filter in this application.

[0020] Explanation of the reference numerals: 1. top cover; 11. embedding groove; 111. first sealing ring; 2. plastic frame; 21. flow channel; 22. exhaust hole; 3. bottom cover; 31. air inlet; 32. slot; 33. abutment groove; 331. second sealing ring; 4. glass fiber filter paper; 5. bottom ring; 51. buckle; 511. connecting strip; 6. long-fiber non-woven fabric. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-2 This application is described in further detail.

[0022] The embodiment of the present application discloses a plastic filter.

[0023] Reference Figure 1 and Figure 2 The plastic filter comprises a top cover 1, a plastic frame 2, a bottom cover 3, a glass fiber filter paper 4 and a bottom ring 5, wherein the top cover 1 is arranged at one end of the plastic frame 2, the bottom cover 3 is arranged at the end of the plastic frame 2 away from the top cover 1, a flow channel 21 is provided inside the plastic frame 2, an air inlet 31 is provided at the end of the bottom cover 3 away from the plastic frame 2, and a plurality of exhaust holes 22 are provided on the side wall of the plastic frame 2 and are communicated with the flow channel 21, the glass fiber filter paper 4 is coaxially arranged on the inner circumferential wall of the plastic frame 2, two buckles 51 are provided on the side of the bottom ring 5 close to the bottom cover 3, and the connecting line between the two buckles 51 passes through the axis of the bottom ring 5, a card slot 32 for the buckle 51 to be inserted is provided on the side wall of the bottom cover 3, and a connecting strip 511 is provided on the side where the two buckles 51 are close to each other, and the two connecting strips 511 are rotatably connected by a rotating shaft.

[0024] When the filter paper needs to be replaced, the two connecting strips 511 are pulled downwards. Driven by the connecting strips 511, the two buckles 51 are deformed inwards. When the buckles 51 are out of the slots 32, the clamping rings can be removed. At this time, the filter paper can be taken out for replacement, which facilitates the replacement of the filter paper.

[0025] The top cover 1 has an embedding groove 11 on one side close to the plastic frame 2 , and the bottom cover 3 has an abutting groove 33 on one side close to the plastic frame 2 . One end of the plastic frame 2 is inserted into the embedding groove 11 , and the other end of the plastic frame 2 is inserted into the abutting groove 33 .

[0026] During installation, one end of the plastic frame 2 can be inserted into the embedding groove 11 and the other end can be inserted into the abutting groove 33 to position the two ends of the plastic frame 2, thereby facilitating the installation of the plastic frame 2.

[0027] The top cover 1 is provided with a first sealing ring 111 on the wall of the embedding groove 11 , and the side wall of the plastic frame 2 abuts against the first sealing ring 111 ; the bottom cover 3 is provided with a second sealing ring 331 on the wall of the abutting groove 33 , and the side wall of the plastic frame 2 abuts against the second sealing ring 331 .

[0028] The first sealing ring 111 can seal the gap between the plastic frame 2 and the wall of the embedding groove 11, and the second sealing ring 331 can seal the gap between the plastic frame 2 and the wall of the abutting groove 33, thereby reducing the risk of medium leakage and improving the sealing performance of the filter.

[0029] The outer peripheral wall of the plastic frame 2 is sheathed with long-fiber non-woven fabric 6 .

[0030] The outer layer is added with long fiber non-woven fabric, which can remove particulate impurities in the compressed air on the one hand, and greatly reduce the sound on the other hand, further improving the sound elimination effect.

[0031] The inner wall of the bottom ring 5 gradually expands from the side close to the bottom cover 3 to the side far away from the bottom cover 3 .

[0032] The flared shape of the bottom ring 5 can increase the size of the insertion end of the bottom ring 5, thereby facilitating the insertion of the interface.

[0033] The implementation principle of a plastic filter in an embodiment of the present application is: during installation, the long-fiber non-woven fabric 6 is sleeved on the outer peripheral side of the plastic skeleton 2, the glass fiber filter paper 4 is inserted into the inner peripheral side of the plastic skeleton 2, and then one end of the plastic skeleton 2 is inserted into the embedding groove 11 of the top cover 1, and the other end of the plastic skeleton 2 is inserted into the abutment groove 33 of the bottom cover 3, and finally the bottom ring 5 is inserted into the opening of the bottom cover 3.

[0034] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A plastic filter, characterized in that: The invention comprises a top cover (1), a plastic frame (2), a bottom cover (3), glass fiber filter paper (4) and a bottom ring (5), wherein the top cover (1) is arranged at one end of the plastic frame (2), the bottom cover (3) is arranged at an end of the plastic frame (2) away from the top cover (1), a flow channel (21) is provided inside the plastic frame (2), an end of the bottom cover (3) away from the plastic frame (2) is provided with an air inlet (31) interconnected with the flow channel (21), and a side wall of the plastic frame (2) is provided with a plurality of air inlets (31) interconnected with the flow channel (21). ) are interconnected exhaust holes (22), the glass fiber filter paper (4) is coaxially arranged on the inner peripheral wall of the plastic frame (2), two buckles (51) are arranged on the side of the bottom ring (5) close to the bottom cover (3), the connection line between the two buckles (51) passes through the axis of the bottom ring (5), the side wall of the bottom cover (3) is provided with a slot (32) for the buckle (51) to be inserted, and a connecting strip (511) is arranged on the side of the two buckles (51) close to each other, and the two connecting strips (511) are rotatably connected via a rotating shaft.

2. A plastic filter according to claim 1, characterized in that: The top cover (1) is provided with an embedding groove (11) on a side close to the plastic frame (2), and the bottom cover (3) is provided with an abutment groove (33) on a side close to the plastic frame (2); one end of the plastic frame (2) is inserted into the embedding groove (11), and the other end of the plastic frame (2) is inserted into the abutment groove (33).

3. A plastic filter according to claim 2, characterized in that: The top cover (1) is provided with a first sealing ring (111) on the groove wall of the embedding groove (11), and the side wall of the plastic frame (2) abuts against the first sealing ring (111); the bottom cover (3) is provided with a second sealing ring (331) on the groove wall of the abutting groove (33), and the side wall of the plastic frame (2) abuts against the second sealing ring (331).

4. A plastic filter according to claim 1, characterized in that: The outer peripheral wall of the plastic skeleton (2) is sheathed with long-fiber non-woven fabric (6).

5. A plastic filter according to claim 1, characterized in that: The inner peripheral wall of the bottom ring (5) gradually expands from a side close to the bottom cover (3) to a side away from the bottom cover (3).

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