Filter with filter element convenient to replace

Abstract

The utility model relates to the technical field of filters, in particular to a filter convenient to replace a filter element, which comprises a top cover, a casing and a fixing rod, the outer wall of the top cover is fixedly connected with a fixing ring, the outer wall of the fixing ring is provided with a sliding groove, the inner wall of the sliding groove is rotatably connected with a sliding ring, and one side of the sliding ring far away from the sliding groove is fixedly connected with an internal thread ring. The outer wall of the upper end of the machine shell is fixedly connected with an external thread ring, the external thread ring is flush with the machine shell, and the internal thread ring is in threaded connection with the external thread ring. Compared with the prior art, by arranging the sliding ring, the internal thread ring and the external thread ring, the sliding ring rotates in the sliding groove to drive the internal thread ring to be separated from the external thread ring, then the top cover can be opened, and then the water retaining device is pulled out, so that the filter element can be replaced, the use is very convenient, and the practicability is high. The time for screwing a plurality of screws is effectively shortened, the phenomenon of screw slipping of the screws is avoided, disassembly and fixation of the filter are facilitated, and replacement of the filter element is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a filter with a convenient filter element replacement. Background Art

[0002] The main function of the filter is to remove impurities from liquids or gases to protect equipment and pipelines from damage. They are usually installed at key points in the fluid system, such as the inlet end of compressors, pumps and instruments, to ensure the normal operation of these equipment. The filter can effectively block solid particles such as scale, rust, composite sealants, and coal slag to prevent these impurities from entering the system and causing damage. In addition, filters are also widely used in dust removal, dust prevention, and air filtration, and are essential to keep the environment clean and the equipment operating normally.

[0003] The prior art publication number is: CN209575953U, which discloses a filter that is convenient for replacing filter elements, including a housing, the top of the housing is fixedly connected with a top cover, the bottom of the top cover is fixedly connected to the top of the housing through a flange, the inner wall of the top cover is fixedly connected with a top plate, the bottom of the top plate is fixedly connected with two limiting blocks, the bottoms of the two limiting blocks are welded with springs, and the insides of the two springs are clamped with fixing rods. The filter that is convenient for replacing filter elements, by disassembling the flange, the top cover is removed from the top of the housing, and at the same time, the limiting block is driven to separate from the fixing rod and the fixing rod is driven to separate from the spring, so that the filter element of the filter can be pulled out upward, so as to replace a new filter element, the filter element is inserted into the sealing ring, the position is limited in advance, the spring and the limiting block are put on the fixing rod, and the top cover is fixed to the housing through the flange to complete the replacement, the process is simple, the structure is practical, and it is convenient for users to replace the filter element.

[0004] Through the above arrangement, the filter described in the prior art is fixed to the housing by setting a top cover, and the filter is fixed and removed through the cooperation between the spring and the fixing rod. However, the filter of the prior art solution has the following defects during operation:

[0005] When the filter described in the prior art is used, the flange needs to be unscrewed first. Since multiple screws and nuts are required to fix the top cover and the casing, a lot of time is needed to fix them. Moreover, the nuts and screws will rust on the surface and inside after long-term use, which can easily cause the screws to strip, making it difficult to fix the filter and very inconvenient to disassemble. Utility Model Content

[0006] The utility model aims to provide a filter with convenient filter element replacement, mainly used to solve the technical problems in the prior art that multiple screws need to be screwed when disassembling the filter, which wastes time and energy and easily causes screw thread stripping.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0008] A filter for convenient replacement of filter elements comprises a top cover, a casing and a fixing rod, wherein a fixing ring is fixedly connected to an outer wall of the top cover, a sliding groove is provided on the outer wall of the fixing ring, a slip ring is rotatably connected to the inner wall of the sliding groove, an internal threaded ring is fixedly connected to the side of the slip ring away from the sliding groove, an external threaded ring is fixedly connected to the outer wall of the upper end of the casing, and the external threaded ring is flush with the casing, the internal threaded ring is threadedly connected to the external threaded ring, a clamping groove is symmetrically provided on the upper end of the casing, and a water retaining structure is installed inside the clamping groove.

[0009] The working principle and beneficial effects of the utility model:

[0010] 1. Working principle: When the filter element needs to be replaced, first twist the internal thread ring so that the internal thread ring drives the sliding ring to rotate on the inner wall of the slide groove, so that the internal thread ring is separated from the external thread ring, and at the same time, the top cover is raised upward, and the top cover is separated from one end of the casing, and then the top cover is removed, and then the water retaining structure is pulled to take out the water retaining structure, and then the filter element can be pulled out and replaced by pulling the fixing rod to complete the operation.

[0011] 2. Beneficial effects:

[0012] The technical solution sets a slip ring, an internal thread ring and an external thread ring, so that the slip ring rotates inside the slide groove, driving the internal thread ring to disengage from the external thread ring, and then the top cover can be opened. Then, by pulling out the water retaining device, you can replace the filter element. It is very convenient to use, effectively reduces the time required to tighten multiple screws, avoids the phenomenon of screw stripping, is conducive to the disassembly and fixation of the filter, and facilitates the replacement of the filter element.

[0013] Preferably, the water retaining structure includes a card block, which is located inside the card slot and is slidably connected to the inner wall of the card slot, and a water retaining plate is fixed to the inner wall of the card block, and a plug hole matching the fixing rod is formed through the upper surface of the water retaining plate, and the fixing rod is plugged into the plug hole. By setting up the water retaining structure, the sewage to be filtered can be blocked, and the sewage can be prevented from reacting with the spring to cause oxidation of the spring, and the spring can be prevented from rusting, re-contamination of the sewage can be prevented, and the spring elasticity can be prevented from decreasing.

[0014] Preferably, a storage groove is provided on the upper surface of the top cover, the inner wall of the storage groove is rotatably connected to a rotating shaft, one side of the rotating shaft is fixedly connected to a handle, and the handle is movably connected to the storage groove. When the top cover needs to be removed, it can be pulled up by the handle, which is very convenient to use and avoids the top cover falling due to hand slippage, thereby damaging the spring and the top cover.

[0015] Preferably, the block is in an arc shape, a groove is formed on the inner wall of the block, and an anti-skid pad is fixed to the inner wall of the groove. When the water retaining plate is pulled out of the housing, the finger can be pressed against the groove, and then the water retaining plate is pulled out. The anti-skid pad is used to increase the friction between the finger and the groove, preventing the finger from slipping and causing the water retaining plate to fall, thereby preventing damage to the water retaining plate.

[0016] Preferably, a sealing pad is fixedly connected between the jack and the fixing rod, and the sealing pad is made of rubber. By arranging the sealing pad between the jack and the fixing rod, sewage is prevented from entering the surface of the water retaining plate through the gap between them, thereby preventing damage and pollution to the spring.

[0017] Preferably, the water retaining plate is circular in shape, and a ring-shaped sealing gasket is used on the side of the water retaining plate that contacts the inner wall of the casing, so as to prevent sewage from entering the upper surface of the water retaining plate and prevent contamination and corrosion of the spring.

[0018] Preferably, the handle is rectangular, and an anti-skid pad is fixed to the outer wall of the handle to increase the friction between the fingers and the handle, prevent the fingers and the handle from slipping, and prevent the top cover from falling and causing damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the front structural diagram of this utility model patent;

[0020] Figure 2 This is a cross-sectional structural diagram of the utility model patent;

[0021] Figure 3 For this utility model patent Figure 2 Structure diagram at A in the middle;

[0022] Figure 4 For this utility model patent Figure 2 Structure diagram at B in the middle;

[0023] Figure 5 This is the exploded structure diagram of the top cover of this utility model patent;

[0024] Figure 6 This is the structural diagram of the water retaining structure of the utility model patent.

[0025] The figure marks in the drawings of the specification include: 1, top cover; 2, housing; 3, fixing ring; 4, slide groove; 5, slip ring; 6, internal thread ring; 7, external thread ring; 8, slot; 9, fixing rod; 10, block; 11, water retaining plate; 12, socket; 13, storage slot; 14, rotating shaft; 15, handle; 16, pull groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figure 1-6 As shown, a filter for convenient replacement of filter elements comprises a top cover 1, a casing 2 and a fixing rod 9, a fixing ring 3 is fixedly connected to the outer wall of the top cover 1, a receiving groove 13 is provided on the upper surface of the top cover 1, a rotating shaft 14 is rotatably connected to the inner wall of the receiving groove 13, a handle 15 is fixedly connected to one side of the rotating shaft 14, the handle 15 is movably connected to the receiving groove 13, the top cover 1 is convenient to move through the handle 15, and the top cover 1 is effectively prevented from falling off, a sliding groove 4 is provided on the outer wall of the fixing ring 3, a sliding ring 5 is rotatably connected to the inner wall of the sliding groove 4, an internal threaded ring 6 is fixedly connected to the side of the sliding ring 5 away from the sliding groove 4, an external threaded ring 7 is fixedly connected to the upper outer wall of the casing 2, and the external threaded ring 7 is flush with the casing 2, the internal threaded ring 6 is threadedly connected to the external threaded ring 7, a card slot 8 is symmetrically provided on the upper end of the casing 2, and a retaining mechanism is installed inside the card slot 8 The water structure includes a card block 10, which is located inside the card slot 8 and is slidably connected to the inner wall of the card slot 8. The card block 10 is in an arc shape, and a groove 16 is provided on the inner wall of the card block 10. A non-slip pad is fixedly connected to the inner wall of the groove 16, and a water retaining plate 11 is fixedly connected to the inner wall of the card block 10. The water retaining plate 11 is in a circular shape, and a ring-shaped sealing gasket is adopted on the side of the water retaining plate 11 in contact with the inner wall of the casing 2. The water retaining plate 11 is circular, and a socket 12 matching the fixed rod 9 is provided on the upper surface of the water retaining plate 11. A sealing gasket is fixedly connected between the socket 12 and the fixed rod 9, and the sealing gasket is made of rubber. The fixed rod 9 is plugged into the socket 12. By setting a waterproof structure, it is possible to effectively prevent sewage from damaging the spring and the fixed rod 9 and prevent the elastic force of the spring from decreasing.

[0028] From the above, it can be seen that the specific implementation of the utility model is as follows:

[0029] When the filter element needs to be replaced, first rotate the internal threaded ring 6 so that the internal threaded ring 6 drives the sliding ring 5 to rotate inside the sliding groove 4, then disengage the internal threaded ring 6 from the external threaded ring 7, and disengage the top cover 1 from the casing 2, then pull the handle 15 to pull out the top cover 1 and the internal threaded ring 6, and then pull the groove 16 to make the block 10 drive the water retaining plate 11 to slide on the inner wall of the groove 8, disengage the fixing rod 9 from the water retaining plate 11, and then pull it out of the casing 2, and then the filter element can be pulled out by pulling the fixing rod 9 to replace the filter element.

[0030] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A filter for conveniently replacing a filter element, comprising a top cover (1), a housing (2) and a fixing rod (9), characterized in that: A fixing ring (3) is fixedly connected to the outer wall of the top cover (1), a slide groove (4) is provided on the outer wall of the fixing ring (3), a slip ring (5) is rotatably connected to the inner wall of the slide groove (4), an internal thread ring (6) is fixedly connected to the side of the slip ring (5) away from the slide groove (4), an external thread ring (7) is fixedly connected to the outer wall of the upper end of the casing (2), and the external thread ring (7) is flush with the casing (2), the internal thread ring (6) and the external thread ring (7) are threadedly connected, and a clamping groove (8) is symmetrically provided at the upper end of the casing (2), and a water retaining structure is installed inside the clamping groove (8).

2. A filter for convenient filter element replacement according to claim 1, characterized in that: The water retaining structure comprises a clamping block (10), the clamping block (10) being located inside the clamping slot (8) and slidably connected to the inner wall of the clamping slot (8), and a water retaining plate (11) being fixedly connected to the inner wall of the clamping block (10), and a plug hole (12) matching the fixing rod (9) being formed through the upper surface of the water retaining plate (11), and the fixing rod (9) being plugged into the plug hole (12).

3. A filter for convenient filter element replacement according to claim 1, characterized in that: A storage groove (13) is provided on the upper surface of the top cover (1), the inner wall of the storage groove (13) is rotatably connected to a rotating shaft (14), one side of the rotating shaft (14) is fixedly connected to a handle (15), and the handle (15) is movably connected to the storage groove (13).

4. A filter for convenient filter element replacement according to claim 2, characterized in that: The shape of the clamping block (10) is arc-shaped, a groove (16) is provided on the inner wall of the clamping block (10), and an anti-slip pad is fixedly connected to the inner wall of the groove (16).

5. The filter for convenient filter element replacement according to claim 2, characterized in that: A sealing gasket is fixedly connected between the insertion hole (12) and the fixing rod (9), and the sealing gasket is made of rubber material.

6. The filter for convenient filter element replacement according to claim 2, characterized in that: The water retaining plate (11) is circular in shape, and a ring-shaped sealing gasket is used on the side of the water retaining plate (11) that contacts the inner wall of the casing (2).

7. The filter for convenient filter element replacement according to claim 3, characterized in that: The handle (15) is rectangular, and an anti-slip pad is fixedly connected to the outer wall of the handle (15).

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