Fan with filtering function

Abstract

The utility model provides a fan with a filtering function, and belongs to the technical field of fans. The centrifugal fan solves the problems that an existing centrifugal fan cannot guarantee dust-free air supply use, and meanwhile a filtering structure is inconvenient to disassemble and clean quickly. The draught fan with the filtering function comprises a draught fan body and an impeller, a driving motor is arranged at the rear end of the draught fan body, an air inlet used for air inflow is formed in the front end of the draught fan body, an air outlet is formed in the side end of the draught fan body, a fixing part is arranged on the draught fan body, and an air inlet filtering net plate is arranged in the fixing part. Positioning assemblies are arranged at the upper end and the lower end of the fixing part, a mounting groove is formed in the fixing part, each positioning assembly is composed of a positioning piece, a pull rod and a reset spring, positioning holes matched with the positioning pieces are formed in the side end of the air inlet filter screen plate, and an air outlet filter screen plate used for filtering the air outlet is arranged on the fan body. The utility model has the advantage of filtering function.

Description

Technical Field

[0001] The utility model belongs to the technical field of fans, and relates to a fan, in particular to a fan with a filtering function. Background Art

[0002] A centrifugal fan is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. It is a driven fluid machine and is widely used in ventilation, dust removal and cooling in factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and induced draft in boilers and industrial furnaces, cooling and ventilation in air conditioning equipment and household electrical appliances, drying and selection of grains, and inflation and propulsion of wind tunnel air sources and hovercrafts.

[0003] The existing centrifugal fans still have deficiencies in use, specifically as follows: the multi-stage filtration that is not convenient for air inlet and outlet cannot ensure dust-free air supply, and at the same time, the filtration structure that is not convenient for quick disassembly and cleaning is not conducive to ensuring the ventilation volume. Summary of the Invention

[0004] The purpose of the utility model is to provide a fan with a filtering function for the above problems existing in the prior art.

[0005] The purpose of the utility model can be achieved by the following technical solutions: A fan with a filtering function includes a fan body and an impeller. A driving motor for driving the impeller to work is arranged at the rear end of the fan body. It is characterized in that an air inlet for air inlet is opened at the front end of the fan body, an air outlet for air outlet is opened at the side end of the fan body, a fixing part is arranged at the position of the fan body relative to the air inlet, an air inlet filter screen plate for filtering the air inlet is arranged in the fixing part, positioning components for fixing the air inlet filter screen plate are arranged at the upper and lower ends of the fixing part, and an installation groove for installing the positioning components is opened in the fixing part. The two positioning components are composed of positioning parts, pull rods and return springs. A positioning hole matched with the positioning part is arranged at the side end of the air inlet filter screen plate. One end of the positioning part extends out of the installation groove and is connected to the positioning hole. The other end of the positioning part is arranged in the installation groove and moves in the installation groove under the action of the pull rod and the return spring. An air outlet filter screen plate for filtering the air outlet is arranged on the fan body.

[0006] In the above-mentioned fan with a filtering function, a abutting ring for the air inlet filter screen plate to abut against is arranged at the position of the fan body relative to the air inlet.

[0007] In the above-mentioned fan with a filtering function, the air outlet filter screen plate is fixedly installed on the fan body through fixing bolts.

[0008] In the above-mentioned fan with a filtering function, the diameter of the filter screen in the air inlet filter screen plate is larger than the diameter of the air inlet on the fan body.

[0009] In the above-mentioned fan with a filtering function, the fan body is integrally arranged in a square structure.

[0010] Compared with the prior art, in the fan with a filtering function of the present invention, an air inlet filter screen plate and an air outlet filter screen plate are respectively arranged at the air inlet and the air outlet of the fan body, so that the fan has a filtering function, and the air inlet filter screen plate is detachably fixed to the fan body through a positioning component, which is convenient for the staff to replace and clean it. Description of the Drawings

[0011] Figure 1 It is a schematic structural diagram of the present invention.

[0012] Figure 2 It is a schematic cross-sectional structural diagram of the present invention.

[0013] In the figure, 1. Fan body; 2. Impeller; 3. Driving motor; 4. Fixed part; 5. Air inlet filter screen plate; 6. Positioning part; 7. Pull rod; 8. Return spring; 9. Positioning hole; 10. Abutment ring; 11. Air outlet filter screen plate. Detailed Embodiments

[0014] The following are specific embodiments of the present invention and in combination with the drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0015] Such as Figure 1 、 Figure 2As shown in the figure, the present fan with a filtering function includes a fan body 1 and an impeller 2. A driving motor 3 for driving the impeller 2 to work is provided at the rear end of the fan body 1. The driving shaft of the driving motor 3 extends into the fan body 1 and is connected to the impeller 2 inside the fan body 1 to drive the impeller 2 to rotate synchronously. An air inlet for air intake is provided at the front end of the fan body 1, and an air outlet for air outlet is provided at the side end of the fan body 1. A fixing part 4 is provided at a position of the fan body 1 relative to the air inlet. An air inlet filter screen plate 5 for filtering the air inlet is provided inside the fixing part 4. Positioning components for fixing the air inlet filter screen plate 5 are provided at the upper and lower ends of the fixing part 4, and an installation groove for installing the positioning components is provided inside the fixing part 4. The two positioning components are composed of a positioning part 6, a pull rod 7, and a return spring 8. A positioning hole 9 matching with the positioning part 6 is provided at the side end of the air inlet filter screen plate 5. One end of the positioning part 6 extends out of the installation groove and is connected to the positioning hole 9. The other end of the positioning part 6 is arranged inside the installation groove and moves inside the installation groove under the action of the pull rod 7 and the return spring 8. An air outlet filter screen plate 11 for filtering the air outlet is provided on the fan body 1. The air outlet filter screen plate 11 is used to filter the gas inside the fan and prevent dust or impurities from entering the fan when the fan is not working.

[0016] Preferably, when installing the air inlet filter screen plate 5, by pulling the pull rod 7 extending out of the fixing part 4, the return spring 8 is compressed, so that the positioning part 6 extends and retracts inside the installation groove. The air inlet filter screen plate 5 is installed at the air inlet. After releasing the pull rod 7, the return spring 8 rebounds, and the positioning part 6 extends out of the installation groove and extends into the positioning hole 9 of the air inlet filter screen plate 5 to fix the air inlet filter screen plate 5 on the fan body 1. When disassembling the air inlet filter screen plate 5, by pulling the pull rod 7 extending out of the fixing part 4, the return spring 8 is compressed, so that the positioning part 6 extends and retracts inside the installation groove, and the cooperation between the positioning part 6 and the positioning hole 9 is released, so that the air inlet filter screen plate 5 can be disassembled from the fan body 1.

[0017] Further elaborating, a abutting ring 10 for the air inlet filter screen plate 5 to abut against is provided at a position of the fan body 1 relative to the air inlet.

[0018] Further elaborating, the air outlet filter screen plate 11 is fixedly installed on the fan body 1 by fixing bolts.

[0019] Further elaborating, the diameter of the filter screen in the air inlet filter screen plate 5 is larger than the diameter of the air inlet on the fan body 1.

[0020] Further elaborating, the fan body 1 is integrally arranged in a square structure.

[0021] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains may make various modifications or supplements to the described specific embodiments or use similar means for substitution, but they will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

[0022] Although terms such as the fan body 1, impeller 2, drive motor 3, fixing part 4, air inlet filter plate 5, positioning member 6, pull rod 7, return spring 8, positioning hole 9, abutting ring 10, air outlet filter plate 11, etc. in the drawings are used more frequently herein, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present utility model; interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. A fan with filtering function, comprising a fan body (1) and an impeller (2), wherein a driving motor (3) for driving the impeller (2) to work is arranged at the rear end of the fan body (1), and characterized in that: The front end of the fan body (1) is provided with an air inlet for taking in air, the side end of the fan body (1) is provided with an air outlet for discharging air, a fixing portion (4) is provided on the fan body (1) at a position relative to the air inlet, an air inlet filter screen (5) for filtering the air inlet is provided in the fixing portion (4), positioning components for fixing the air inlet filter screen (5) are provided at the upper and lower ends of the fixing portion (4), and a mounting groove for mounting the positioning component is provided in the fixing portion (4), and the two fixing portions are provided with a fixing portion (4) and ... and a fixing portion (4) and a fixing portion (4) and a fixing portion (4) and a The positioning assembly is composed of a positioning member (6), a pull rod (7) and a return spring (8); a side end of the air inlet filter screen (5) is provided with a positioning hole (9) matching the positioning member (6); one end of the positioning member (6) extends out of the mounting groove and is connected to the positioning hole (9); the other end of the positioning member (6) is arranged in the mounting groove and moves in the mounting groove under the action of the pull rod (7) and the return spring (8); an air outlet filter screen (11) for filtering the air outlet is provided on the fan body (1).

2. A fan with filtering function according to claim 1, characterized in that: A support ring (10) for the air inlet filter plate (5) to abut is provided on the fan body (1) at a position relative to the air inlet.

3. The fan with filtering function according to claim 1, characterized in that: The air outlet filter screen plate (11) is fixedly mounted on the fan body (1) by means of fixing bolts.

4. The fan with filtering function according to claim 1, characterized in that: The diameter of the filter screen in the air inlet filter screen plate (5) is larger than the diameter of the air inlet on the fan body (1).

5. The fan with filtering function according to claim 1, characterized in that: The fan body (1) is arranged in a square structure as a whole.

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