Air filter

Abstract

The utility model relates to an air filter which comprises a shell, a tray used for supporting an air filter element and a locking mechanism used for fixing the air filter element are arranged in the shell, an air outlet pipe is further arranged at the bottom end of the shell, a cylinder is arranged on the top wall of the shell, a sleeve is arranged in the cylinder, a bolt used for fixing the sleeve is arranged on the outer side of the cylinder, and an air outlet pipe is further arranged at the bottom end of the shell. An annular seat I for fixing the air filter element is arranged in the sleeve; a strip-shaped groove is formed in the inner side wall of the sleeve above the annular seat I in a surrounding manner; the locking mechanism comprises a plug located in the sleeve and in threaded connection with the sleeve, an air inlet pipe is arranged on the plug, a circle of annular base II for extruding and fixing the air filter element is arranged at the bottom of the plug, square holes are formed in the two corresponding side walls of the annular base II, square rods are arranged in the square holes, one end of each square rod extends into the corresponding strip-shaped groove, and the other end of each square rod extends into the corresponding strip-shaped groove. Screw rods are arranged at the other ends of the square rods, and two groups of screw rods are connected through screw pipes. The device is simple in structure and convenient to use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of filter, in particular to an air filter. BACKGROUND

[0002] Most air filters include a shell and a filter element built into the shell. After a certain period of filtration, fine particles and dust adhere to the surface of the filter element, resulting in reduced filtration capacity, and regular maintenance or replacement is required to ensure that the air filter has sustained good filtration performance. However, most built-in filter elements are relatively inconvenient to disassemble from their shells. For air filters used in harsh environments, the maintenance or replacement frequency of the internal filter element is high, and repeated disassembly and assembly are required, which is not ideal.

[0003] Therefore, there is an air filter with patent number CN221207176U to solve the above problems, but the filter has the following defects when in use, such as: the first plug and the open mouth of the shell are screw-fixed, but during use, the shell and the filter element are shaken due to the influence of the equipment vibration force, at this time, the vibration force is easy to act on the threaded connection between the plug and the open mouth, thereby forcing the plug to rotate outward, thereby affecting the locking and fixing effect of the plug on the filter element and affecting the connection stability of the plug and the open mouth, the second, due to the frequent disassembly and installation of the plug and the open mouth, the threads on the open mouth are often exposed, which may come into contact with other tools or equipment, thereby damaging the threads, and the subsequent use is affected after the threads are damaged, but the fixed connection between the open mouth and the shell requires the open mouth and the shell to be replaced together at this time, which not only takes time and effort, but also costs high, which is not conducive to improving its application range. SUMMARY

[0004] The purpose of the present application is to provide an air filter.

[0005] The technical problem of the present application is mainly solved by the following technical scheme:

[0006] An air filter, comprising a shell, a tray for supporting an air filter element and a locking mechanism for fixing the air filter element are arranged in the shell, the bottom of the tray is connected with the inner bottom wall of the shell through a plurality of support plates, and a gas outlet pipe is arranged at the bottom end of the shell;

[0007] A cylinder is arranged on the top wall of the shell, the cylinder is in communication with the shell, a sleeve is arranged in the cylinder, bolts for fixing the sleeve are arranged on the outer side of the cylinder, an annular seat I for fixing the top end of the air filter element is arranged on the inner bottom of the sleeve, a ring of strip-shaped grooves is arranged on the inner side wall of the sleeve above the annular seat I, and an internal thread is arranged on the inner side wall of the sleeve above the strip-shaped grooves;

[0008] The locking mechanism comprises a plug screwed with the internal thread in the sleeve, the plug is provided with an air inlet pipe opposite to the air inlet of the air filter core top end, the bottom of the plug outside the air inlet pipe is provided with a ring-shaped seat II extruding and fixing the air filter core, the ring-shaped seat II is provided with a square hole on each of the two side walls, the square hole is provided with a square rod, one end of the square rod extends into the strip-shaped groove, the other end of the square rod is provided with a screw rod, and the two groups of screw rods are connected through the screw pipe located directly below the opening of the air inlet pipe.

[0009] Preferably, one end of the sleeve extends into the shell, and a sealing layer is arranged between the sleeve and the cylinder.

[0010] Preferably, the bolt head is arranged outside the cylinder, screw holes for screwing with the bolt shank are arranged on the side wall of the cylinder and the outer wall of the sleeve, and the connection between the cylinder and the top wall of the shell and the top end of the cylinder are both fixed with a sleeve, wherein the bolt is located between the two groups of sleeves, and the two groups of sleeves are further sleeved with protective cylinders screwed with the sleeves.

[0011] Preferably, the size of the square rod is matched with the size of the square hole, the square rod outside the ring-shaped seat II is provided with a protrusion, and the distance between the protrusion and the ring-shaped seat II is greater than the depth of the strip-shaped groove.

[0012] Preferably, the ring-shaped seat I is fixedly connected with the sleeve.

[0013] Preferably, the outer wall of the plug is provided with external threads screwed with the internal threads.

[0014] The air filter core is locked and fixed by the locking mechanism, the plug in the locking mechanism is screwed and fixed with the inner wall of the sleeve, the ring-shaped seat II and the plug are pulled by the strip-shaped groove against the square rod, the plug is prevented from rotating outwardly in the sleeve under the influence of vibration force, the connection stability between the locking mechanism and the shell is indirectly improved, the locking mechanism can lock and fix the air filter core in the shell, when the internal threads of the sleeve are damaged, the sleeve and the cylinder can be separated by disassembling the bolt, and then the sleeve can be pulled out and replaced, the replacement is convenient, and the replacement cost is low due to the separate arrangement of the sleeve, the cylinder and the shell. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic diagram of the application;

[0016] Figure 2 is Figure 1 is an enlarged view of A in figure

[0017] In the figure: 1, shell, 2, air filter element, 3, tray, 4, locking mechanism, 41, plug, 42, air inlet pipe, 43, annular seat II, 44, square hole, 45, square rod, 46, screw rod, 47, screw pipe, 5, support plate, 6, air outlet pipe, 7, cylinder, 8, sleeve, 9, bolt, 10, annular seat I, 11, strip-shaped groove, 12, sleeve pipe, 13, protective cylinder, 14, protrusion. DETAILED DESCRIPTION

[0018] The technical solutions of the present application will be further described below by examples in combination with the drawings.

[0019] An air filter, comprising a shell 1, a tray 3 for supporting an air filter element 2 and a locking mechanism 4 for fixing the air filter element 2 are arranged in the shell 1, the bottom of the tray 3 is connected with the inner bottom wall of the shell 1 through a plurality of support plates 5, and an air outlet pipe 6 is further arranged at the bottom end of the shell 1;

[0020] A cylinder 7 is arranged on the top wall of the shell 1, the cylinder 7 is arranged in communication with the shell 1, a sleeve 8 is arranged in the cylinder 7, a bolt 9 for fixing the sleeve 8 is arranged outside the cylinder 7, an annular seat I 10 for fixing the top end of the air filter element 2 is arranged at the inner bottom of the sleeve 8, the annular seat I 10 is fixedly connected with the sleeve 8, a strip-shaped groove 11 is arranged around the inner side wall of the sleeve 8 above the annular seat I 10, and an internal thread is arranged on the inner side wall of the sleeve 8 above the strip-shaped groove 11;

[0021] The locking mechanism 4 comprises a plug 41 which is screwed with the internal thread in the sleeve 8, an external thread is arranged on the outer wall of the plug 41 for screwing with the internal thread, an air inlet pipe 42 is arranged on the plug 41 for the air inlet port of the top end of the air filter element 2, a ring-shaped seat II 43 for extruding and fixing the air filter element 2 is arranged at the bottom of the plug 41 outside the air inlet port, a square hole 44 is arranged on each of the two side walls corresponding to the ring-shaped seat II 43, a square rod 45 is arranged in the square hole 44, one end of the square rod 45 extends into the strip-shaped groove 11, and a screw rod 46 is arranged at the other end of the square rod 45, wherein the two groups of screw rods 46 are connected through a screw pipe 47 located directly below the opening of the air inlet pipe 42.

[0022] As shown in Figure 1 , 2 One end of the sleeve 8 extends into the shell 1, and a sealing layer is arranged between the sleeve 8 and the cylinder 7.

[0023] The bolt 9 head is arranged outside the cylinder 7, screw holes for screwing with the bolt 9 shank are arranged on the side wall of the cylinder 7 and the outer wall of the sleeve 8, sleeve pipes 12 are fixed at the connecting part between the cylinder 7 and the top wall of the shell 1 and the top end of the cylinder 7, the bolt 9 is located between the two groups of sleeve pipes 12, and the two groups of sleeve pipes 12 are further sleeved with protective cylinders 13 which are screwed with the sleeve pipes 12. The protective cylinders 13 strengthen the connecting part between the cylinder 7 and the shell 1, and the protective cylinders 13 can protect the bolt 9 from being exposed, and even if the protective cylinders 13 slightly rotate on the sleeve pipes 12 due to vibration force, the normal use of the air filter is not affected.

[0024] The square rod 45 is matched with the square hole 44 in size, and the square rod 45 outside the annular seat II 43 is provided with a protrusion 14, and the distance between the protrusion 14 and the annular seat II 43 is greater than the depth of the strip-shaped groove 11.

[0025] The use method of the air filter is as follows: the sleeve 8 is inserted into the cylinder 7, and the cylinder 7 and the sleeve 8 are locked and fixed by the bolt 9, at this time, the air filter element 2 is inserted into the tray 3 from the sleeve 8, and the top end of the air filter element 2 is fixed by the annular seat I 10, so that the top end and the bottom end of the air filter element 2 are fixed at the same time, so that the horizontal swing of the air filter element 2 is prevented.

[0026] Then the plug 41 is inserted into the sleeve 8 and screwed with the internal thread, so that the plug 41 locks and fixes the top end of the air filter element 2 through the annular seat II 43, and then the tool or hand is inserted into the annular seat II 43 through the air inlet pipe 42, and the screw pipe 47 is rotated, so that the screw pipe 47 rotates on the two groups of screw rods 46, at this time, the square hole 44 abuts against the side wall of the square rod 45, so that the square rod 45 abuts against the screw rod 46 to prevent the screw rod 46 from rotating with the screw pipe 47, and the distance between the two groups of screw rods 46 in the screw pipe 47 is expanded, so that the screw rod 46 drives the square rod 45 to move outward in the square hole 44, and finally the end of the square rod 45 slides into the strip-shaped groove 11. The air filter element 2 is locked and fixed by the locking mechanism 4, and the plug 41 in the locking mechanism 4 is screwed and fixed with the inner wall of the sleeve 8, and the plug 41 is pulled by the strip-shaped groove 11 abutting against the square rod 45, so that the annular seat II 43 and the plug 41 are prevented from rotating outward in the sleeve 8 under the influence of the vibration force, and the connection stability between the locking mechanism 4 and the shell 1 is indirectly improved, so that the locking mechanism 4 can lock and fix the air filter element 2 in the shell 1.

[0027] The dismounting of the air filter element 2 is contrary to the above steps, and when the plug 41 is damaged, it can be directly replaced by dismounting; when the internal thread of the sleeve 8 is damaged, the sleeve 8 can be separated from the cylinder 7 by dismounting the bolt 9, and then the sleeve 8 can be replaced by being pulled out, which is convenient for replacement, and since the sleeve 8 is separated from the cylinder 7 and the shell 1, the replacement cost is also low.

[0028] The above has carried out the detailed explanation to the present application, but the content described is only the preferred embodiment of the present application, cannot be considered for limiting the implementation range of the present application. Any equivalent change and improvement made according to the application scope of the present application should still belong to the patent coverage range of the present application.

Claims

1. An air cleaner comprising a shell, a tray for supporting an air filter element and a locking mechanism for fixing the air filter element are arranged in the shell, the bottom of the tray is connected with the inner bottom wall of the shell through a plurality of support plates, and an air outlet pipe is arranged at the bottom end of the shell, characterized in that: a cylinder is arranged on the top wall of the shell, the cylinder is arranged in communication with the shell, a sleeve is arranged in the cylinder, a bolt for fixing the sleeve is arranged outside the cylinder, an annular seat I for fixing the top end of the air filter element is arranged at the bottom of the sleeve, a ring of strip-shaped grooves is arranged around the inner side wall of the sleeve above the annular seat I, and an internal thread is arranged on the inner side wall of the sleeve above the strip-shaped grooves; the locking mechanism comprises a plug arranged in the sleeve and screwed with the internal thread, an air inlet pipe is arranged on the plug and opposite to the air inlet port of the top end of the air filter element, an annular seat II for extruding and fixing the air filter element is arranged on the bottom of the plug outside the air inlet port, square holes are arranged on the two side walls corresponding to the annular seat II, square rods are arranged in the square holes, one end of the square rod extends into the strip-shaped groove, and screw rods are arranged at the other end of the square rod, wherein the two groups of screw rods are connected through a screw pipe arranged directly below the opening of the air inlet pipe. One end of the sleeve extends into the shell, and a sealing layer is arranged between the sleeve and the cylinder.

2. An air cleaner as set forth in claim 1 wherein: The head of the bolt is arranged outside the cylinder, screw holes for screwing with the shank of the bolt are arranged on the side wall of the cylinder and the outer wall of the sleeve, sleeve pipes are fixed at the connection between the cylinder and the top wall of the shell and the top end of the cylinder, the bolt is arranged between the two groups of sleeve pipes, and protective cylinders are further sleeved on the two groups of sleeve pipes and screwed with the sleeve pipes.

3. An air cleaner as set forth in claim 1 wherein: The size of the square rod is matched with the size of the square hole, protrusions are arranged on the square rod outside the annular seat II, and the distance between the protrusions and the annular seat II is greater than the depth of the strip-shaped groove.

4. An air cleaner as set forth in claim 1 wherein: The annular seat I is fixedly connected with the sleeve.

5. An air cleaner as set forth in claim 1 wherein: An external thread is arranged on the outer wall of the plug and screwed with the internal thread.

6. An air cleaner as set forth in claim 1 wherein: ​

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