Double-suction type centrifugal fan

Abstract

The utility model relates to the technical field of centrifugal fans, in particular to a double-suction type centrifugal fan which comprises a centrifugal fan body, a support is arranged on the outer side of the centrifugal fan body, the support is composed of a corner connecting piece and a supporting plate, and the supporting plate is fixedly connected with the side wall of the corner connecting piece. The corner connecting piece is provided with an auxiliary assembly; the mounting columns on the corner cover plates are correspondingly inserted into the mounting holes of the bracket corner connecting pieces until the corner cover plates are clamped with the corner connecting pieces, and the knob screws are in threaded connection with the threaded grooves so as to fix the positions of the corner cover plates, so that the corner cover plates are arranged at the corners of the bracket on the outer side of the main body of the double-suction centrifugal fan; the rubber cushion layers on the outer sides of the corner cover plates play a role in protection, people are prevented from being stabbed by the corners when wiping the corners of the support, meanwhile, the rubber cushion layers can be replaced after being abraded, the oil absorption sponge blocks are arranged at the corners to adsorb oil stains accumulated on the corners of the support on the outer side of the double-suction type centrifugal fan body, and the wiping and cleaning frequency of the corners of the support is reduced.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal fan technology, specifically a double-suction centrifugal fan. Background Technology

[0002] Centrifugal fans mainly consist of: impeller, casing, coupling, and shaft. The impeller is the main working component that generates air pressure and transmits energy; the casing is mainly used to introduce and discharge gas, while converting some of the gas's kinetic energy into pressure energy; the coupling is used to connect the motor and the fan, transmitting torque; the shaft mounts and fixes the impeller, and is connected to the motor via the coupling.

[0003] Chinese patent document CN217682328U discloses a high-efficiency, energy-saving, and environmentally friendly centrifugal fan, including a double-intake centrifugal fan. The double-intake centrifugal fan includes a volute casing, an impeller inside the volute casing, a front disc and a rear disc, and a shaft disc between the front and rear discs. A rotating shaft is fixed at the center of the shaft disc, and blades are evenly arranged on both sides of the shaft disc. A support plate is fixed to one side of each blade, and adjacent blades are connected by the support plates. Connecting plates are fixed to both ends of each blade, and the blades are connected to the front disc, rear disc, and shaft disc via the connecting plates. This invention replaces the existing single-intake centrifugal fan with a double-intake centrifugal fan for gas-liquid separation, effectively reducing the impeller diameter and centrifugal force, thus improving the fan efficiency. Furthermore, because the support plates are perpendicular to the blades, they do not obstruct air discharge during impeller rotation and increase blade strength.

[0004] However, in the above solution, a bracket is set on the outside of the main body of the dual-intake centrifugal fan. The bracket plate is usually L-shaped for connecting and installing the centrifugal fan. The corners of the bracket are usually stacked at right angles. When the dual-intake centrifugal fan is used in an oil fume environment, oil stains are easy to accumulate at the stacked joints of the bracket corners, which require personnel to wipe and clean. The corners of the bracket are also relatively sharp and can easily injure personnel's hands. Improvement and optimization are needed.

[0005] Therefore, this utility model proposes a double-suction centrifugal fan to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a double-suction centrifugal fan to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a double-suction centrifugal fan, comprising: a centrifugal fan body, a support frame provided on the outer side of the centrifugal fan body, the support frame being composed of corner connectors and a support plate, the support plate being fixedly connected to the side wall of the corner connectors, a fixed plate being fixedly mounted on the support plate, and the centrifugal fan body being mounted on the fixed plate; the corner connectors are provided with auxiliary components, the auxiliary components including corner cover plates and oil-absorbing sponge blocks.

[0008] Preferably, the corner connector has a square groove and a mounting hole on its side wall, the mounting hole penetrating the square groove.

[0009] Preferably, the corner connector is snapped with a corner cover plate, and a rubber pad layer is fixedly provided on the outer wall of the corner cover plate, and the corner cover plate is snapped with the support plate.

[0010] Preferably, a mounting post is fixedly provided on the corner cover plate, and a threaded groove is provided at the end of the mounting post. The mounting post is inserted into the mounting hole, and a knob screw is provided in the threaded connection of the threaded groove. The end cap of the knob screw is engaged with the corner connector.

[0011] Preferably, an oil-absorbing sponge block is snapped onto the inner side of the corner cover plate, and an insertion hole is provided on the oil-absorbing sponge block. The mounting post is inserted into the insertion hole, and the oil-absorbing sponge block is placed in the square groove.

[0012] Preferably, sponge pads are symmetrically fixed on both sides of the oil-absorbing sponge block, and slots are opened on the corner cover plate, with the sponge pads fitting into the slots.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By inserting the mounting posts on the corner cover into the mounting holes of the bracket corner connector until the corner cover and corner connector are snapped together, the knob screw is tightened into the threaded groove to fix the position of the corner cover. This achieves the installation of corner covers at the corners of the outer bracket of the double-suction centrifugal fan body. The rubber pad on the outside of the corner cover provides protection, preventing personnel from being poked by the corners when wiping the bracket corners. It also allows for replacement of the rubber pad when it wears out. Oil-absorbing sponges are placed at the corners to absorb the oil stains accumulated on the outer bracket corners of the double-suction centrifugal fan body, reducing the frequency of wiping and cleaning the bracket corners. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is an exploded view of the corner connector structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the corner connector structure of this utility model;

[0018] Figure 4 This is an exploded view of the corner cover structure connection of this utility model.

[0019] In the diagram: 1. Centrifugal fan body; 2. Corner connector; 3. Support plate; 4. Fixing plate; 5. Square groove; 6. Mounting hole; 7. Corner cover plate; 8. Rubber pad; 9. Mounting column; 10. Threaded groove; 11. Knob screw; 12. Oil-absorbing sponge block; 13. Insertion hole; 14. Sponge pad; 15. Slot. Detailed Implementation

[0020] The technical solutions in the embodiments of this utility model will be clearly and completely described below. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Please see Figures 1-4 The present invention provides the following two preferred embodiments:

[0022] Example 1: A double-suction centrifugal fan includes: a centrifugal fan body 1, a support frame disposed on the outer side of the centrifugal fan body 1, the support frame consisting of corner connectors 2 and a support plate 3, the support plate 3 and the side wall of the corner connectors 2 being fixedly connected, a fixing plate 4 being fixedly disposed on the support plate 3, and the centrifugal fan body 1 being mounted on the fixing plate 4; the corner connectors 2 are provided with auxiliary components, the auxiliary components including corner cover plates 7 and oil-absorbing sponge blocks 12; the corner connectors 2 are provided with square grooves 5. The corner connector 2 has a mounting hole 6 on its side wall, which passes through the square groove 5; the corner connector 2 is snapped with a corner cover plate 7, and a rubber pad layer 8 is fixedly installed on the outer wall of the corner cover plate 7; the corner cover plate 7 is snapped with the support plate 3; a mounting post 9 is fixedly installed on the corner cover plate 7, and a threaded groove 10 is opened at the end of the mounting post 9; the mounting post 9 is inserted into the mounting hole 6; a knob screw 11 is threadedly connected to the threaded groove 10, and the end cap of the knob screw 11 is snapped with the corner connector 2.

[0023] In use, after the main body 1 of the double-suction centrifugal fan is installed on the fixing plate 4 of the support plate 3, the mounting post 9 on the corner cover 7 is inserted into the mounting hole 6 of the corner connector 2 of the support until the corner cover 7 is snapped into the corner connector 2 and the corner cover 7 is snapped into the support plate 3. Then, the knob screw 11 is threaded into the threaded groove 10 at the end of the mounting post 9 to fix the position of the corner cover 7. At this time, the corner cover 7, the corner connector 2, and the support plate 3 are integrated, which optimizes the appearance of the outer support of the main body 1 of the double-suction centrifugal fan and realizes the corner cover 7 at the corner of the outer support of the main body 1 of the double-suction centrifugal fan. The rubber pad 8 on the outside of the corner cover 7 plays a protective role, preventing people from being poked by the corner when wiping the corner of the support. At the same time, the rubber pad 8 can be replaced after long-term use due to wear.

[0024] Example 2: Based on Example 1, an oil-absorbing sponge block 12 is snapped onto the inner side of the corner cover plate 7. The oil-absorbing sponge block 12 has an insertion hole 13. The mounting post 9 is inserted into the insertion hole 13. The oil-absorbing sponge block 12 is set in the square groove 5. Sponge pads 14 are symmetrically fixed on both sides of the oil-absorbing sponge block 12. The corner cover plate 7 has a slot 15. The sponge pads 14 are embedded in the slot 15.

[0025] Before installation, the mounting post 9 is inserted into the insertion hole 13 on the oil-absorbing sponge block 12. The position of the sponge pad 14 is adjusted so that it is embedded in the slot 15 on the corner cover 7 until the oil-absorbing sponge block 12 is snapped into the inside of the corner cover 7. As the corner cover 7 is installed, the oil-absorbing sponge block 12 is placed in the square groove 5. During use, the sponge pad 14 exposed outside the slot 15 works with the oil-absorbing sponge block 12 to absorb the oil stains accumulated on the corners of the bracket on the outside of the double-suction centrifugal fan body 1, reducing the frequency of wiping and cleaning the corners of the bracket.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double suction centrifugal fan, comprising: Centrifugal fan body (1), the centrifugal fan body (1) outside setting support, support is composed of corner connecting piece (2) and support plate (3), support plate (3) and corner connecting piece (2) side wall fixed connection, fixed plate (4) is fixedly arranged on support plate (3), centrifugal fan body (1) is installed and arranged on fixed plate (4); Its characterized in that: the corner connecting piece (2) sets up auxiliary assembly, and auxiliary assembly contains corner cover plate (7), oil absorption sponge block (12); The corner connecting piece (2) is provided with a square groove (5), and the corner connecting piece (2) is provided with a mounting hole (6) on the side wall, and the mounting hole (6) penetrates the square groove (5); The corner connecting piece (2) is provided with a corner cover plate (7), and the corner cover plate (7) is fixedly provided with a rubber pad (8) on the outer wall, and the corner cover plate (7) is clamped with the support plate (3).

2. The double suction centrifugal fan according to claim 1, characterized in that: The corner cover plate (7) is fixedly provided with a mounting column (9), and the mounting column (9) is provided with a threaded groove (10) at the end, and the mounting column (9) is inserted into the mounting hole (6), and the threaded groove (10) is provided with a knob screw (11) in a threaded connection, and the knob screw (11) is clamped with the corner connecting piece (2).

3. A double suction centrifugal fan as claimed in claim 2, characterized in that: The corner cover plate (7) is provided with an oil absorption sponge block (12) on the inner side, and the oil absorption sponge block (12) is provided with a plug hole (13), and the mounting column (9) is inserted into the plug hole (13), and the oil absorption sponge block (12) is arranged in the square groove (5).

4. The double suction centrifugal fan of claim 3, wherein: The oil absorption sponge block (12) is provided with a sponge pad (14) on the two side walls, and the corner cover plate (7) is provided with a clamping groove (15), and the sponge pad (14) is clamped with the clamping groove (15).

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