CN219974911U - Air inlet of fan - Google Patents

Abstract

The utility model relates to the technical field of fans, in particular to a fan air inlet; including air intake, flange, the ring flange, impeller and dustproof module, dustproof module includes the filter screen, two spacing, two stoppers, two support and hold the spring, two spacing arc pieces and two sets of extrusions, filter screen and air intake looks adaptation, two stopper symmetry set up in the inner wall of filter screen, and every stopper all has spacing hole, two spacing symmetries set up in the inner wall of air intake, and every spacing has the recess, every supports and holds the spring and set up respectively in corresponding recess, every spacing arc piece with support that corresponds hold spring fixed connection, and every spacing arc piece respectively with corresponding recess and spacing hole looks adaptation, every set of extrusion sets up respectively on corresponding stopper, through the setting of above-mentioned structure, dust and impurity in the filter air have been realized, avoid dust and impurity to detain in the fan and pile up, ensure the normal use of fan.

Description

Air inlet of fan

Technical Field

The utility model relates to the technical field of fans, in particular to a fan air inlet.

Background

The fan is a machine which relies on input mechanical energy to increase gas pressure and discharge gas, is a driven fluid machine, is a machine which converts rotary mechanical energy into gas pressure energy and kinetic energy and conveys the gas out, and is widely applied to ventilation, dust discharge and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings.

But in the use of current fan, dust and impurity in the air get into in the fan through the air intake, and in the past, dust and impurity are detained in the fan and are piled up, can influence the normal use of fan.

Disclosure of Invention

The utility model aims to provide a fan air inlet, which aims to solve the technical problem that dust and impurities in air enter the fan through the air inlet in use of a fan in the prior art, and remain and accumulate in the fan for a long time to influence the normal use of the fan.

In order to achieve the purpose, the air inlet of the fan comprises an air inlet, a flange plate, an impeller and a dustproof module, wherein the flange is fixedly connected with the air inlet and positioned on the outer wall of the air inlet, the flange plate is fixedly connected with the air inlet and positioned on the outer wall of the air inlet, and the impeller is connected with the air inlet;

the dustproof module comprises a filter screen, two limiting frames, two limiting blocks, two supporting springs, two limiting arc blocks and two groups of extrusion pieces, wherein the filter screen is matched with the air inlet, the two limiting blocks are symmetrically arranged on the inner wall of the filter screen, each limiting block is provided with a limiting hole, the two limiting frames are symmetrically arranged on the inner wall of the air inlet, each limiting frame is provided with a groove, each supporting spring is respectively arranged in the corresponding groove, each limiting arc block is fixedly connected with the corresponding supporting spring, each limiting arc block is respectively matched with the corresponding groove and the corresponding limiting hole, and each group of extrusion pieces are respectively arranged on the corresponding limiting blocks.

The dustproof module further comprises two positioning arc blocks, wherein the two positioning arc blocks are fixedly connected with the flange and symmetrically arranged on the outer wall of the flange.

The extrusion piece comprises a pressing block, a reset spring and an extrusion rod, wherein the extrusion rod sequentially penetrates through the filter screen and the limiting block, the pressing block is fixedly connected with the extrusion rod, and two ends of the reset spring are respectively fixedly connected with the filter screen and the pressing block.

The fan air inlet further comprises a sub-opening ring and a check ring, and the sub-opening ring and the check ring are respectively arranged at the joint of the air inlet and the impeller.

The fan air inlet further comprises a plurality of rib plates, and each rib plate is fixedly connected with the air inlet, the flange and the flange plate respectively.

According to the air inlet of the fan, dust and impurities in the air can be filtered by the filter screen, the dust and the impurities are blocked outside the air inlet, when the filter screen is found to accumulate excessive dust and impurities, in order not to affect normal use of the air inlet, the extrusion piece is extruded with the limiting arc blocks in the limiting holes by pressing the extrusion piece, the limiting arc blocks are moved from the limiting holes to the grooves of the limiting frames, the abutting springs are compressed in the grooves, so that the limiting blocks on the filter screen are separated from the limiting frames, then the filter screen is detached from the air inlet to be cleaned, at the moment, the elastic force of the abutting springs can push the limiting arc blocks to move out of the grooves, after the filter screen is cleaned, the two limiting blocks on the filter screen are respectively inserted into the corresponding limiting frames, the limiting arc blocks can be extruded by the limiting blocks, the limiting arc blocks enter the grooves, the filter screen is pushed by the limiting arc blocks, and the filter screen is pushed by the limiting arc blocks to be attached to the air inlet, and the air inlet of the fan can be prevented from being polluted by the impurities, and the filter screen can be continuously accumulated in the air inlet, and the air inlet can be prevented from being polluted.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of an air inlet of a fan according to the present utility model.

Fig. 2 is a schematic diagram of the overall internal structure of the air intake of the fan of the present utility model.

Fig. 3 is an enlarged view of the partial structure at a of fig. 2 according to the present utility model.

Fig. 4 is an enlarged view of the partial structure at B of fig. 2 according to the present utility model.

101-air inlets, 102-flanges, 103-flange plates, 104-impellers, 105-filter screens, 106-limiting frames, 107-limiting blocks, 108-supporting springs, 109-limiting arc blocks, 110-positioning arc blocks, 111-pressing blocks, 112-reset springs, 113-extrusion rods, 114-limiting holes, 115-grooves, 116-sub-opening rings, 117-check rings and 118-rib plates.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

Referring to fig. 1 to 4, the present utility model provides a fan air inlet 101, which comprises an air inlet 101, a flange 102, a flange 103, an impeller 104 and a dust-proof module, wherein the flange 102 is fixedly connected with the air inlet 101 and is positioned on the outer wall of the air inlet 101, the flange 103 is fixedly connected with the air inlet 101 and is positioned on the outer wall of the air inlet 101, and the impeller 104 is connected with the air inlet 101;

the dustproof module comprises a filter screen 105, two limiting frames 106, two limiting blocks 107, two supporting springs 108, two limiting arc blocks 109 and two groups of extrusion pieces, wherein the filter screen 105 is matched with the air inlet 101, the two limiting blocks 107 are symmetrically arranged on the inner wall of the filter screen 105, each limiting block 107 is provided with a limiting hole 114, the two limiting frames 106 are symmetrically arranged on the inner wall of the air inlet 101, each limiting frame 106 is provided with a groove 115, each supporting spring 108 is respectively arranged in the corresponding groove 115, each limiting arc block 109 is fixedly connected with the corresponding supporting spring 108, and each limiting arc block 109 is respectively matched with the corresponding groove 115 and the extrusion piece 114, and each group of limiting arc blocks 109 is respectively arranged on the corresponding limiting block 107.

In this embodiment, the filter screen 105 can filter dust and impurity in the air, be in dust and impurity are in the air intake 101 is outside to block, when the filter screen 105 is piled up too much dust and impurity, in order not to influence this moment the normal use of air intake 101, through pressing the extrusion piece, the extrusion piece can with spacing arc piece 109 extrusion in the spacing hole 114 makes will spacing arc piece 109 follow remove to in spacing hole 114 in spacing frame 106's recess 115, support the spring 108 and compress in recess 115, thus will filter screen 105 is last stopper 107 with spacing frame 106 separates, then will filter screen 105 is in air intake 101 department dismantles and clears up, and this moment the elastic force of support spring 108 can promote spacing arc piece 109 is followed recess 115 removes, will after the clearance of filter screen 105 is accomplished will two on the filter screen 105 stopper 107 inserts respectively to corresponding spacing frame 106, spacing piece 109 can be compressed in the recess 109 the filter screen 105 the filter screen is carried out with the air intake 105 can be carried out to the filter screen 101 and is carried out in the filter screen 101 and is carried out to the filter screen 101 and is carried out the filter screen 107.

Further, the dustproof module further includes two positioning arc blocks 110, and the two positioning arc blocks 110 are fixedly connected with the flange 102 and symmetrically disposed on the outer wall of the flange 102.

In this embodiment, two positioning arc blocks 110 are fixedly mounted on the flange 102, and when the filter screen 105 is mounted on the air inlet 101, the positioning arc blocks 110 can position the filter screen 105 at the air inlet 101, so that the filter screen 105 is convenient to be mounted at the air inlet 101.

Further, the extrusion piece includes pressing piece 111, reset spring 112 and extrusion rod 113, extrusion rod 113 runs through in proper order filter screen 105 with stopper 107, pressing piece 111 with extrusion rod 113 fixed connection, reset spring 112's both ends respectively with filter screen 105 with pressing piece 111 fixed connection.

In this embodiment, when the filter screen 105 is detached from the air inlet 101 for cleaning, the pressing block 111 on the filter screen 105 is pressed, the pressing block 111 pushes the pressing rod 113 to slide on the filter screen 105 and the pressing block 111, meanwhile, the return spring 112 is pressed by the pressing block 111, the return spring 112 is compressed, the pressing rod 113 moves to be in contact with the limiting arc block 109 in the limiting hole 114, the pressing rod 113 presses the limiting arc block 109, so that the limiting arc block 109 moves out of the limiting hole 114, and then the filter screen 105 is detached from the air inlet 101 for cleaning.

Further, the fan air inlet 101 further includes a sub-opening ring 116 and a retainer ring 117, where the sub-opening ring 116 and the retainer ring 117 are respectively disposed at the connection between the air inlet 101 and the impeller 104.

In this embodiment, the sub-rim 116 and the retainer 117 are disposed at the matching position of the air inlet 101 and the impeller 104 on the air inlet 101, and the sub-rim 116 is processed to a required size by adopting a numerical control processing technology, so that the sub-rim can be matched with the sub-rim of the impeller 104 processed by the same numerical control processing technology, and the mechanical efficiency of the fan can be improved by about 3-5%, so that the market competitiveness of the fan is improved.

Further, the fan air inlet 101 further includes a plurality of rib plates 118, and each rib plate 118 is fixedly connected with the air inlet 101, the flange 102 and the flange plate 103 respectively.

In this embodiment, the rib 118 can increase the stability of the flange 102 and the flange 103 on the air inlet 101.

The above disclosure is only a preferred embodiment of the present utility model, and it should be understood that the scope of the utility model is not limited thereto, and those skilled in the art will appreciate that all or part of the procedures described above can be performed according to the equivalent changes of the claims, and still fall within the scope of the present utility model.

Claims (5)

1. An air inlet of a fan is characterized in that,

the device comprises an air inlet, a flange plate, an impeller and a dustproof module, wherein the flange is fixedly connected with the air inlet and positioned on the outer wall of the air inlet, the flange plate is fixedly connected with the air inlet and positioned on the outer wall of the air inlet, and the impeller is connected with the air inlet;

the dustproof module comprises a filter screen, two limiting frames, two limiting blocks, two supporting springs, two limiting arc blocks and two groups of extrusion pieces, wherein the filter screen is matched with the air inlet, the two limiting blocks are symmetrically arranged on the inner wall of the filter screen, each limiting block is provided with a limiting hole, the two limiting frames are symmetrically arranged on the inner wall of the air inlet, each limiting frame is provided with a groove, each supporting spring is respectively arranged in the corresponding groove, each limiting arc block is fixedly connected with the corresponding supporting spring, each limiting arc block is respectively matched with the corresponding groove and the corresponding limiting hole, and each group of extrusion pieces are respectively arranged on the corresponding limiting blocks.

2. The fan intake of claim 1,

the dustproof module further comprises two positioning arc blocks, wherein the two positioning arc blocks are fixedly connected with the flange and symmetrically arranged on the outer wall of the flange.

3. The fan intake of claim 2,

the extrusion piece comprises a pressing block, a reset spring and an extrusion rod, wherein the extrusion rod sequentially penetrates through the filter screen and the limiting block, the pressing block is fixedly connected with the extrusion rod, and two ends of the reset spring are respectively fixedly connected with the filter screen and the pressing block.

4. The fan intake of claim 3,

the fan air inlet further comprises a sub-opening ring and a check ring, and the sub-opening ring and the check ring are respectively arranged at the joint of the air inlet and the impeller.

5. The blower inlet of claim 4, wherein,

the fan air inlet further comprises a plurality of rib plates, and each rib plate is fixedly connected with the air inlet, the flange and the flange plate respectively.