Combined air filter

Abstract

The utility model discloses a combined air filter, and relates to the technical field of air filters. The combined air filter comprises a base, the top of the base is in threaded connection with a filter cartridge, a positioning ring is arranged at the top of the filter cartridge, an annular groove is formed in the bottom of the positioning ring, a positioning rod is fixedly installed on the inner top wall of the annular groove, the surface of the positioning rod is sleeved with a baffle ring, and a reset spring is arranged on the surface of the positioning rod in a surrounding mode. According to the utility model, the insertion rod on the stop block is pulled, and then one end of the insertion rod is separated from one side of the filter cartridge, so that the positioning ring can be conveniently separated from the filter cartridge, the disassembly and assembly operation of the positioning ring in the subsequent use process is facilitated, and meanwhile, the filter cartridge is rotated, so that the filter cartridge can be conveniently disassembled and assembled. According to the air filter, the filter cartridge can be separated from the base, so that the filter cartridge can be conveniently combined, disassembled and assembled, subsequent use is facilitated, and meanwhile, the use convenience of the air filter is also improved.

Description

Technical Field

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

[0002] Air filter is short for: air filter, which refers to a special device that removes particulate impurities in the air. Filter refers to a device for removing particulate impurities in the air. When a piston machine (internal combustion engine, reciprocating compressor air filter, etc.) is working, if the inhaled air contains impurities such as dust, it will aggravate the wear of the parts, so an air filter must be installed. The air filter consists of a filter element and a housing. The main requirements of the air filter are high filtration efficiency, low flow resistance, and continuous use for a long time without maintenance. The existing patent, patent announcement number CN219141005U, discloses a combined air filter, including an outer frame, at least two frames arranged in the outer frame, a transmission structure connected to the top of the frame, and a lifting structure arranged on the outer side of the outer frame and connected to the transmission structure; glass fiber filter paper is arranged in the frame, the frame includes a fixed frame fixed to the right end of the inner side of the outer frame and a movable frame located on the left side of the fixed frame and can move up and down, and side grooves are opened around the corresponding frame inside the outer frame; the lifting structure includes a protection box fixedly connected to a side of the outer frame close to the connecting strip, the connecting rod is fixedly connected to the top of the vertically arranged lifting column, and a driving structure connected to the bottom of the lifting column and causing it to move up and down periodically is arranged inside the protection box. The utility model provides a lifting structure to enable the frame to vibrate up and down. After the air filter has worked for a period of time, some impurities on the filter paper can be dropped off by vibration and will not be easily accumulated, so that it is convenient to clean at any time.

[0003] Regarding the above-mentioned related technologies, the inventors believe that the following defects exist: in actual application, it is inconvenient to install the air filter. If it is not convenient to assemble and install it, it will affect the subsequent replacement and installation operations, and it will be inconvenient for subsequent staff to use. Therefore, we propose a combined air filter to solve the above-mentioned problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a combined air filter, which solves the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model is implemented through the following technical scheme: a combined air filter, including a base, a filter cartridge is threadedly connected to the top of the base, a positioning ring is arranged on the top of the filter cartridge, an annular groove is opened at the bottom of the positioning ring, a positioning rod is fixedly installed on the inner top wall of the annular groove, a retaining ring is sleeved on the surface of the positioning rod, a reset spring is arranged around the surface of the positioning rod, and the bottom of the positioning rod is plugged into the top of the filter cartridge.

[0006] An insertion rod is inserted on the surface of the positioning ring, a stopper is fixedly installed on one end of the insertion rod, a tension spring is arranged around the surface of the insertion rod, and one end of the insertion rod is plugged into the surface of the filter cartridge.

[0007] Preferably, one end of the tension spring is fixedly connected to one side of the stopper, and the other end of the tension spring is fixedly connected to the surface of the positioning ring.

[0008] Preferably, the positioning ring is provided with an insertion hole for the insertion rod to pass through, and the inner wall of the insertion hole is slidably connected to the surface of the insertion rod, and the surface of the filter cartridge is provided with an insertion hole for the insertion rod to be inserted.

[0009] Preferably, an arc-shaped plate is fixedly mounted on one side of the inner wall of the positioning ring, the arc-shaped plate is made of rubber, and anti-slip grooves are provided on the inner side of the arc-shaped plate.

[0010] Preferably, a circular hole is opened at the bottom of the base, a shock-absorbing spring is fixedly installed on the inner top wall of the circular hole, a piston is fixedly installed on the bottom of the shock-absorbing spring, and a ball is embedded in the bottom of the piston.

[0011] Preferably, the surface of the piston is slidably connected to the inner wall of the circular hole, and the piston is adapted to the circular hole.

[0012] Preferably, the retaining ring is provided with a through hole for the positioning rod to pass through, and the inner wall of the through hole is slidably connected to the surface of the positioning rod. Beneficial Effects

[0013] The utility model provides a combined air filter. Compared with the prior art, it has the following beneficial effects:

[0014] The combined air filter pulls the insertion rod on the stopper, and then one end of the insertion rod is separated from one side of the filter cartridge, so that the positioning ring is separated from the filter cartridge, thereby facilitating the subsequent disassembly and assembly during use. At the same time, the filter cartridge can be separated from the base by rotating it, so that it is convenient for combined disassembly and assembly operations, convenient for subsequent use, and also improves the convenience of using the air filter.

[0015] At the same time, during the installation process, the air filter is inserted into the mounting hole, and then the surface of the ball contacts the inner wall of the mounting hole, so that the shock-absorbing spring cushions the ball on the piston, thereby facilitating the pushing of the air filter. During the pushing process, the ball rolls, which facilitates the subsequent clamping operation of the air filter during use, thereby improving the convenience of using the air filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from the first viewing angle.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model from a second viewing angle.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the positioning ring of the utility model.

[0019] Figure 4 For this utility model Figure 2 A schematic diagram of the enlarged structure in the middle.

[0020] In the figure: 1, base; 2, filter cartridge; 3, positioning ring; 4, positioning rod; 5, retaining ring; 6, return spring; 7, plug rod; 8, stop block; 9, tension spring; 10, arc plate; 11, shock-absorbing spring; 12, piston; 13, ball. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-4 The utility model provides a technical solution: a combined air filter, including a base 1, a filter cartridge 2 is threadedly connected to the top of the base 1, a positioning ring 3 is arranged on the top of the filter cartridge 2, an annular groove is opened at the bottom of the positioning ring 3, a positioning rod 4 is fixedly installed on the inner top wall of the annular groove, a retaining ring 5 is sleeved on the surface of the positioning rod 4, a reset spring 6 is arranged around the surface of the positioning rod 4, and the bottom of the positioning rod 4 is plugged into the top of the filter cartridge 2.

[0023] An insert rod 7 is inserted into the surface of the positioning ring 3 , a stopper 8 is fixedly mounted on one end of the insert rod 7 , a tension spring 9 is arranged around the surface of the insert rod 7 , and one end of the insert rod 7 is plugged into the surface of the filter cartridge 2 .

[0024] Pull the rod 7 on the stopper 8, and then one end of the rod 7 is separated from one side of the filter cartridge 2, so as to facilitate the separation of the positioning ring 3 from the filter cartridge 2, thereby facilitating the subsequent disassembly and assembly during use. At the same time, rotating the filter cartridge 2 can separate the filter cartridge 2 from the base 1, so as to facilitate the combination and disassembly operation, facilitate subsequent use, and also improve the convenience of using the air filter.

[0025] See also Figure 4 One end of the tension spring 9 is fixedly connected to one side of the block 8, and the other end of the tension spring 9 is fixedly connected to the surface of the positioning ring 3. The set tension spring 9 can facilitate the resetting of the insertion rod 7 on the block 8 during use, which is also convenient for subsequent normal use and improves the convenience of use of the air filter.

[0026] See also Figure 4 A plug hole for the insertion rod 7 to pass through is provided on the positioning ring 3, and the inner wall of the plug hole is slidably connected to the surface of the insertion rod 7. A plug hole for the insertion of the insertion rod 7 is provided on the surface of the filter cartridge 2. The provided plug hole facilitates the plugging and positioning during use, thereby facilitating subsequent use.

[0027] The provided insertion rod 7, during use, achieves the effect of facilitating the insertion and positioning thereof, thereby facilitating subsequent use and improving the convenience of use of the air filter.

[0028] See also Figure 3 , a curved plate 10 is fixedly mounted on one side of the inner wall of the positioning ring 3, the curved plate 10 is made of rubber, and the inner side of the curved plate 10 is provided with anti-slip grooves.

[0029] The arc-shaped plate 10 is provided to facilitate positioning and squeezing thereof during use, thereby preventing shaking during subsequent installation.

[0030] See also Figure 1 A circular hole is provided at the bottom of the base 1, and a shock-absorbing spring 11 is fixedly installed on the inner top wall of the circular hole. A piston 12 is fixedly installed at the bottom of the shock-absorbing spring 11, and a ball 13 is inlaid at the bottom of the piston 12. During the installation process, the air filter is inserted into the installation hole, and then the surface of the ball 13 contacts the inner wall of the installation hole, so that the shock-absorbing spring 11 buffers the ball 13 on the piston 12, so as to facilitate pushing it. During the pushing process, the ball 13 rolls, which facilitates the subsequent clamping operation of the air filter during use, thereby improving the convenience of using the air filter.

[0031] See also Figure 1 The surface of the piston 12 is slidably connected to the inner wall of the circular hole, and the piston 12 is adapted to the circular hole. The set circular hole is adapted to the piston 12. During use, it is convenient to pass through it, which is convenient for subsequent use.

[0032] See also Figure 3 A through hole is provided on the retaining ring 5 for the positioning rod 4 to pass through, and the inner wall of the through hole is slidably connected to the surface of the positioning rod 4. The set through hole, during use, achieves the effect of facilitating the subsequent passage of the positioning rod 4, facilitating subsequent use, improving the convenience of use of the air filter, and facilitating subsequent operations.

[0033] During operation, the rod 7 on the stopper 8 is pulled, and then one end of the rod 7 is separated from one side of the filter cartridge 2, so as to facilitate the separation of the positioning ring 3 from the filter cartridge 2, thereby facilitating the subsequent disassembly and assembly operations during use. At the same time, the filter cartridge 2 can be rotated to separate the filter cartridge 2 from the base 1, so as to facilitate the combined disassembly and assembly operations thereof, and facilitate subsequent use, and also improve the convenience of using the air filter. During the installation process, the air filter is inserted into the mounting hole, and then the surface of the ball 13 contacts the inner wall of the mounting hole, so that the shock-absorbing spring 11 buffers the ball 13 on the piston 12, so as to facilitate pushing it. During the pushing process, the ball 13 rolls, which facilitates the subsequent clamping operation of the air filter during use, and improves the convenience of using the air filter.

[0034] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A combined air filter, comprising a base (1), characterized in that: The top of the base (1) is threadedly connected to a filter cartridge (2), a positioning ring (3) is arranged on the top of the filter cartridge (2), an annular groove is provided at the bottom of the positioning ring (3), a positioning rod (4) is fixedly mounted on the inner top wall of the annular groove, a retaining ring (5) is sleeved on the surface of the positioning rod (4), a return spring (6) is arranged around the surface of the positioning rod (4), and the bottom of the positioning rod (4) is plugged into the top of the filter cartridge (2); An insertion rod (7) is inserted into the surface of the positioning ring (3), a stopper (8) is fixedly mounted on one end of the insertion rod (7), a tension spring (9) is arranged around the surface of the insertion rod (7), and one end of the insertion rod (7) is plugged into the surface of the filter cartridge (2).

2. A combined air filter according to claim 1, characterized in that: One end of the tension spring (9) is fixedly connected to one side of the stopper (8), and the other end of the tension spring (9) is fixedly connected to the surface of the positioning ring (3).

3. A combined air filter according to claim 1, characterized in that: The positioning ring (3) is provided with a plug hole for the insertion rod (7) to pass through, and the inner wall of the plug hole is slidably connected to the surface of the insertion rod (7), and the surface of the filter cartridge (2) is provided with a plug hole for the insertion rod (7) to be inserted.

4. A combined air filter according to claim 1, characterized in that: An arc-shaped plate (10) is fixedly mounted on one side of the inner wall of the positioning ring (3); the arc-shaped plate (10) is made of rubber, and anti-slip grooves are provided on the inner side of the arc-shaped plate (10).

5. The combined air filter according to claim 1, characterized in that: A circular hole is formed at the bottom of the base (1), a damping spring (11) is fixedly mounted on the inner top wall of the circular hole, a piston (12) is fixedly mounted on the bottom of the damping spring (11), and a ball (13) is embedded on the bottom of the piston (12).

6. A combined air filter according to claim 5, characterized in that: The surface of the piston (12) is slidably connected to the inner wall of the circular hole, and the piston (12) is adapted to the circular hole.

7. The combined air filter according to claim 1, characterized in that: The retaining ring (5) is provided with a through hole for the positioning rod (4) to pass through, and the inner wall of the through hole is slidably connected to the surface of the positioning rod (4).

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