Centrifugal fan outlet filtering device

Abstract

The utility model discloses a centrifugal fan outlet filtering device which comprises a transversely-arranged rectangular filtering pipeline, flange plates are arranged at the two ends of the rectangular filtering pipeline, a plurality of mounting holes are formed in the flange plates, a plurality of filtering plates are arranged in the rectangular filtering pipeline, and the mounting holes are formed in the rectangular filtering pipeline. A falling hole is formed in the position, located at the front portion of each filtering plate, of the bottom of the rectangular filtering pipeline, an inverted-table-shaped shell is arranged at the position, located at each falling hole, of the outer bottom face of the rectangular filtering pipeline, and a rectangular shell is arranged at the bottom of the inverted-table-shaped shell; a collecting box is inserted into the side face of the rectangular shell. The centrifugal fan outlet filtering device is mounted at the air outlet of the centrifugal fan, so that solid particles blown out of the air outlet can be collected by the filtering box, and the cleanliness of air discharged by the centrifugal fan is improved.

Description

Technical Field

[0001] The utility model relates to a centrifugal fan, in particular to an outlet filtering device of a centrifugal fan. Background Art

[0002] Centrifugal fan is a common industrial fan, and its working principle is to use centrifugal force to increase the pressure and speed of the gas. Solid particles are often carried at the outlet of the centrifugal fan, and the presence of these solid particles will affect the normal operation of the next process. Therefore, the solid particles need to be filtered.

[0003] Chinese patent CN202121050414.7 discloses a three-proof fresh air system with a self-cleaning function, including a filter integrated in a vehicle cabin, a high-pressure centrifugal fan, and a gas filter canister, and also includes first to sixth electric air valves, a first air inlet, a second air inlet, and a fresh air outlet; the filter inlet end is connected to the first air inlet, and the first electric air valve at the filter outlet end is connected to the high-pressure centrifugal air inlet; one end of the second electric air valve is connected to the second air inlet, and the other end of the second electric air valve is connected to the high-pressure centrifugal fan inlet through the first electric air valve; the air outlet of the high-pressure centrifugal fan is connected to the inlet end of the gas filter canister through the fifth electric air valve, and the outlet end of the gas filter canister is connected to the fresh air outlet through the fourth electric air valve; the third electric air valve is connected between the high-pressure centrifugal fan outlet and the fresh air outlet; the sixth electric air valve is connected between the filter outlet end and the high-pressure centrifugal fan outlet.

[0004] In the three-defense fresh air system with self-cleaning function, a filter is only arranged at the front end of the high-pressure centrifugal fan, and no filter is arranged at the air outlet position, which easily causes the outlet air to still contain foreign particles. Therefore, a centrifugal fan outlet filter device arranged at the outlet of the centrifugal fan is also needed to improve the cleanliness performance of the outlet air through the centrifugal fan outlet filter device. Utility Model Content

[0005] The utility model aims to provide a centrifugal fan outlet filter device, which can collect solid particles blown out of the outlet by installing the centrifugal fan outlet filter device at the outlet of the centrifugal fan, thereby improving the cleanliness of the centrifugal fan outlet air.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a centrifugal fan outlet filter device, which includes a horizontally placed rectangular filter duct, flange plates are provided at both ends of the rectangular filter duct, a plurality of mounting holes are provided on the flange plates, a plurality of filter plates are arranged in the rectangular filter duct, a drop hole is provided at the bottom of the rectangular filter duct, a drop hole is provided at the front position of each filter plate, an inverted shell is provided at the outer bottom surface of the rectangular filter duct, a rectangular shell is provided at the position of each drop hole, a rectangular shell is provided at the bottom of the inverted shell, and a collection box is inserted into the side of the rectangular shell.

[0007] Preferably, a socket is provided on one side of the rectangular shell, slots are provided on both sides of the socket, a groove capable of accommodating the inner end of the collection box is provided on the inner side surface of the rectangular shell facing the socket, and plug plates sliding in the slots are provided on both sides of the collection box.

[0008] Preferably, a handle is provided at the outer end of the collecting box, and the handle comprises a transverse plate and a vertical plate fixed to the outer end of the transverse plate and extending downward.

[0009] Preferably, the top surface of the rectangular filter pipe is provided with an insertion hole for inserting the filter plate, and the insertion hole is provided with a sink groove around it. The top of the filter plate is fixedly connected with a top plate embedded in the sink groove.

[0010] Preferably, a plurality of ear grooves are provided on both sides of the sink groove, and screw holes are provided on the bottom surfaces of the ear grooves; ear plates corresponding to the ear grooves are provided on both sides of the top plate, and screws screwed to the screw holes are provided through the ear plates.

[0011] Preferably, the filter plate comprises a rectangular frame fixed to the bottom surface of the top plate, a filter screen is installed in the rectangular frame, and the inner bottom surface of the rectangular filter pipe is provided with a limiting groove capable of being inserted into the bottom of the rectangular frame.

[0012] Preferably, two side edges of the rectangular frame are arranged as first guide slopes.

[0013] Preferably, the bottom edge of the rectangular frame is arranged as a second flow guiding slope.

[0014] Preferably, a third guide slope is provided on the upper edges of the front and rear sides of the drop hole; and the second guide slope adjacent to the third guide slope is coplanarly arranged.

[0015] Preferably, the inner wall of the collection box is flush with the inner wall of the rectangular shell.

[0016] According to the above technical scheme, the utility model provides a centrifugal fan outlet filter device, which includes a horizontally placed rectangular filter duct, flange plates are provided at both ends of the rectangular filter duct, a plurality of mounting holes are provided on the flange plates, a plurality of filter plates are arranged in the rectangular filter duct, a drop hole is provided at the bottom of the rectangular filter duct, which is located at the front position of each filter plate, a concave-shaped shell is provided on the outer bottom surface of the rectangular filter duct, which is located at the position of each drop hole, a rectangular shell is provided at the bottom of the concave-shaped shell, and a collection box is inserted into the side of the rectangular shell.

[0017] The flange plate on one side of the centrifugal fan outlet filter device near the drop hole is installed at the centrifugal fan outlet, and the flange plate at the other end is connected to the external air duct. The wind at the centrifugal fan outlet passes through the drop hole and the filter plate in turn, enters the external air duct and is discharged to a designated position. Due to the setting of the filter plate, solid particles passing through the filter plate will be blocked by it and fall into the drop hole. The solid particles pass through the inverted table shell and the rectangular shell in turn and fall into the collection box to be collected. In addition, there are multiple combinations of drop holes, filter plates, inverted table shells, rectangular shells and collection boxes, which can achieve a multi-stage filtering effect.

[0018] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of a centrifugal fan outlet filter device;

[0021] Figure 2 It is a left side view of a preferred embodiment of a centrifugal fan outlet filter device;

[0022] Figure 3 yes Figure 2 AA cross-sectional structural diagram;

[0023] Figure 4 yes Figure 3 BB cross-sectional structure diagram;

[0024] Figure 5 It is a schematic diagram of the overall structure of a preferred embodiment of the filter plate;

[0025] Figure 6 It is a schematic diagram of the overall structure of a preferred embodiment of a rectangular filter pipe.

[0026] Description of Reference Numerals

[0027] 1-rectangular filter pipe; 2-flange plate; 3-mounting hole; 4-top plate; 5-screw; 6-drop hole; 7-inverted shell; 8-rectangular shell; 9-collection box; 10-plug plate; 11-handle; 12-filter screen; 13-first guide slope; 14-second guide slope; 15-third guide slope; 16-sinking groove; 17-limiting groove; 18-groove; 19-socket; 20-ear plate; 21-through hole; 22-plug hole; 23-ear groove; 24-screw hole; 25-slot; 26-rectangular frame. DETAILED DESCRIPTION

[0028] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0029] In the present utility model, unless otherwise stated, directional words contained in terms such as "up, down, left, right, front, back, inside, outside" merely represent the orientation of the terms in normal usage, or are common names understood by those skilled in the art, and should not be regarded as limitations on the terms.

[0030] See also Figure 1-6 The centrifugal fan outlet filter device shown comprises a horizontally placed rectangular filter duct 1, flange plates 2 are provided at both ends of the rectangular filter duct 1, a plurality of mounting holes 3 are provided on the flange plate 2, a plurality of filter plates are arranged in the rectangular filter duct 1, a drop hole 6 is provided at the bottom of the rectangular filter duct 1 at the front position of each filter plate, an inverted terrace type shell 7 is provided at the outer bottom surface of the rectangular filter duct 1 at the position of each drop hole 6, a rectangular shell 8 is provided at the bottom of the inverted terrace type shell 7, and a collection box 9 is inserted into the side of the rectangular shell 8.

[0031] Through the implementation of the above technical solution, the flange plate 2 on one side of the drop hole 6 in the centrifugal fan outlet filter device is installed at the centrifugal fan outlet, and the flange plate 2 at the other end is connected to the external air duct. The wind at the centrifugal fan outlet passes through the drop hole 6 and the filter plate in turn, and then enters the external air duct and is discharged to the designated position. Due to the setting of the filter plate, the solid particles passing through the filter plate will be blocked by it and fall into the drop hole 6. The solid particles pass through the inverted shell 7 and the rectangular shell 8 in turn and fall into the collection box 9 to be collected. In addition, there are multiple combinations of the drop hole 6, the filter plate, the inverted shell 7, the rectangular shell 8 and the collection box 9, which can achieve the effect of multi-stage filtration. The mesh diameters of the filter screens 12 on multiple filter plates can be set to be the same, or can be set to gradually decrease along the wind direction.

[0032] In this embodiment, in order to further provide a plug-in structure of the collection box 9, a socket 19 is provided on one side of the rectangular shell 8, and slots 25 are provided on both sides of the socket 19. A groove 18 capable of accommodating the inner end of the collection box 9 is provided on the inner side of the rectangular shell 8 facing the socket 19, and plug plates 10 sliding on the slots 25 are provided on both sides of the collection box 9. Through the cooperation of the plug plates 10 on both sides and the slots 25, the collection box 9 can be inserted or pulled out from the side of the rectangular shell 8, and through the provision of the grooves 18, the inner end of the collection box 9 can be partially hidden outside the inner cavity of the rectangular shell 8, so that the inner wall of the collection box 9 can be better aligned with the inner wall of the rectangular shell 8, and particles are prevented from being left on the top of the collection box 9.

[0033] In this embodiment, in order to facilitate pulling out the collection box 9 so as to take out or put the collection box 9 into the socket 19, a handle 11 is provided at the outer end of the collection box 9, and the handle 11 includes a horizontal plate and a vertical plate fixed to the outer end of the horizontal plate and extending downward.

[0034] In this embodiment, the top surface of the rectangular filter pipe 1 is provided with an insertion hole 22 for inserting the filter plate, and the insertion hole 22 is provided with a sink 16 around it. The top of the filter plate is fixedly connected with a top plate 4 embedded in the sink 16. Through such a configuration, the top surface of the top plate 4 can be aligned with the top surface of the rectangular filter pipe 1 after the filter plate is inserted into the rectangular filter pipe 1.

[0035] In this embodiment, a plurality of ear slots 23 are provided on both sides of the sink 16, and screw holes 24 are provided on the bottom surfaces of the ear slots 23; ear plates 20 corresponding to the ear slots 23 are provided on both sides of the top plate 4, and screws 5 screwed to the screw holes 24 are provided through the ear plates 20. The screws 5 pass through the through holes 21 provided on the ear plates 20 and are screwed to the screw holes 24 to fix the top plate 4 on the rectangular filter pipe 1, thereby achieving a detachable function.

[0036] In this embodiment, in order to further provide a structure of the filter plate, the filter plate includes a rectangular frame 26 fixed to the bottom surface of the top plate 4, a filter screen 12 is installed in the rectangular frame 26, and the inner bottom surface of the rectangular filter pipe 1 is provided with a limiting groove 17 capable of inserting the bottom of the rectangular frame 26. When the filter plate is inserted into place, the bottom of the rectangular frame 26 is inserted into the limiting groove 17 for positioning, the top is positioned in the insertion hole 22, and the inner side surface of the top of the rectangular frame 26 is flush with the bottom surface of the insertion hole 22.

[0037] In this embodiment, the two side edges of the rectangular frame 26 are arranged as first guide slopes 13. The arrangement of the first guide slopes 13 prevents solid particles from staying on the windward side of the rectangular frame 26.

[0038] In this embodiment, the bottom edge of the rectangular frame 26 is configured as a second guiding slope 14. The second guiding slope 14 allows the falling solid particles to fall more smoothly.

[0039] In this embodiment, the upper edges of the front and rear sides of the drop hole 6 are provided with a third guide slope 15, and the second guide slope 14 adjacent to the third guide slope 15 is arranged coplanarly. This arrangement facilitates the falling solid particles to fall more smoothly.

[0040] In this embodiment, the inner wall of the collection box 9 is flush with the inner wall of the rectangular housing 8. Through such an arrangement, the solid particles can be better collected in the collection box 9.

[0041] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0042] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0043] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A centrifugal fan outlet filter device, characterized in that: The invention comprises a horizontally placed rectangular filter pipe (1), flange plates (2) are arranged at both ends of the rectangular filter pipe (1), a plurality of mounting holes (3) are arranged on the flange plates (2), a plurality of filter plates are arranged in an array in the rectangular filter pipe (1), a drop hole (6) is arranged at the bottom of the rectangular filter pipe (1) at the front position of each filter plate, an inverted shell (7) is arranged at the outer bottom surface of the rectangular filter pipe (1) at the position of each drop hole (6), a rectangular shell (8) is arranged at the bottom of the inverted shell (7), and a collection box (9) is inserted into the side of the rectangular shell (8).

2. The centrifugal fan outlet filter device according to claim 1, characterized in that: A socket (19) is provided on one side of the rectangular shell (8), slots (25) are provided on both sides of the socket (19), a groove (18) capable of accommodating the inner end of the collection box (9) is provided on the inner side surface of the rectangular shell (8) facing the socket (19), and plug plates (10) sliding in the slots (25) are provided on both sides of the collection box (9).

3. The centrifugal fan outlet filter device according to claim 2, characterized in that: The outer end of the collection box (9) is provided with a handle (11), and the handle (11) comprises a transverse plate and a vertical plate fixed to the outer end of the transverse plate and extending downward.

4. The centrifugal fan outlet filter device according to claim 1, characterized in that: The top surface of the rectangular filter pipe (1) is provided with an insertion hole (22) for inserting the filter plate; The insertion hole (22) is provided with a sink groove (16) around it, and the top of the filter plate is fixedly connected to a top plate (4) embedded in the sink groove (16).

5. The centrifugal fan outlet filter device according to claim 4, characterized in that: A plurality of ear grooves (23) are arranged on both sides of the sink groove (16), and a screw hole (24) is arranged on the bottom surface of the ear groove (23); Ear plates (20) corresponding to the ear grooves (23) are arranged on both sides of the top plate (4), and screws (5) screwed to the screw holes (24) are arranged through the ear plates (20).

6. The centrifugal fan outlet filter device according to claim 4, characterized in that: The filter plate comprises a rectangular frame (26) fixed to the bottom surface of the top plate (4), a filter screen (12) is installed in the rectangular frame (26), and the inner bottom surface of the rectangular filter pipe (1) is provided with a limiting groove (17) capable of being inserted into the bottom of the rectangular frame (26).

7. The centrifugal fan outlet filter device according to claim 6, characterized in that: The two side edges of the rectangular frame (26) are arranged as first flow guiding slopes (13).

8. The centrifugal fan outlet filter device according to claim 7, characterized in that: The bottom edge of the rectangular frame (26) is arranged as a second flow guiding slope (14).

9. The centrifugal fan outlet filter device according to claim 8, characterized in that: The upper edges of the front and rear sides of the drop hole (6) are provided with a third flow guide slope (15); The second flow guiding inclined surface (14) adjacent to the third flow guiding inclined surface (15) is arranged coplanarly.

10. The centrifugal fan outlet filter device according to claim 1, characterized in that: The inner wall of the collection box (9) is flush with the inner wall of the rectangular shell (8).

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