Centrifugal fan with volute structure convenient to disassemble quickly

Abstract

The utility model discloses a centrifugal fan with a volute structure convenient to disassemble quickly, which comprises a discharge pipe, a first volute, a fixed connecting plate, a first fixing bolt, a sliding support clamping frame, a fixed support frame, a second volute, a protective cover and an impeller, the fixed connecting plates are fixedly connected to the edges of the inner side ends of the first volute and the second volute in a clamped mode, and the first fixing bolt is installed between the fixed connecting plates arranged on the first volute and the second volute in a threaded mode. In the using process of the device, the first volute and the second volute can be conveniently detached for internal maintenance, and the first volute and the second volute can be rapidly and accurately aligned and then fixed after maintenance is completed, so that in the using process of the device, the first volute and the second volute are conveniently and rapidly detached and fixed; and internal maintenance treatment is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal fan technology, specifically a centrifugal fan with a volute structure that is easy to disassemble quickly. Background Technology

[0002] Centrifugal fans are machines that rely on input mechanical energy to increase gas pressure and discharge gas; they are a type of driven fluid machinery. Centrifugal fans are widely used in factories, mines, tunnels, cooling towers, vehicles, ships, and buildings for ventilation, dust removal, and cooling; in boilers and industrial furnaces for ventilation and induced draft; in air conditioning equipment and household appliances for cooling and ventilation; in grain drying and conveying; as wind sources in wind tunnels; and in air cushion vehicle inflation and propulsion. However, existing centrifugal fans have a volute-like outer casing that cannot be quickly disassembled during use. The integrated casing makes disassembly and repair inconvenient when internal malfunctions occur, and reassembly and alignment after disassembly take considerable time. Therefore, a centrifugal fan with a volute structure that allows for quick disassembly is needed to solve the aforementioned problems. Utility Model Content

[0003] The purpose of this invention is to provide a centrifugal fan with a volute structure that is easy to disassemble quickly, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a centrifugal fan with a volute structure that is easy to disassemble quickly, comprising a discharge pipe, a first volute, a fixed connecting plate, a first fixing bolt, a sliding support bracket, a fixed support frame, a second volute, a protective cover, and an impeller. The first volute and the second volute are mirror-symmetrically distributed. The fixed connecting plate is fixedly snapped onto the inner edge of the first volute and the second volute. The first fixing bolt is threaded between the fixed connecting plate provided on the first volute and the second volute. The discharge pipe is fixedly connected to the first volute and the second volute. The sliding support bracket is fixedly connected to the bottom end of the first volute. The fixed support frame is fixedly connected to the bottom end of the second volute. The protective cover is fixedly installed on the outer end of the first volute by bolts. The impeller is rotatably snapped into the inside of the second volute, and the impeller is located between the first volute and the second volute.

[0005] Preferably, a sealing rubber ring is securely placed between the fixed connecting plates provided on the first volute and the second volute.

[0006] Preferably, the bottom end of the fixed support frame is fixedly connected to a fixed mounting base.

[0007] Preferably, the fixed mounting base has a sliding adjustment slot, the bottom end of the sliding support bracket is slidably engaged inside the sliding adjustment slot, the bottom end of the sliding support bracket has symmetrical fixed threaded holes, and the fixed mounting base is threadedly mounted with a second fixing bolt.

[0008] Preferably, the front end of the second fixing bolt is inserted into the inside of the fixing threaded hole.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] During the use of this utility model, the first and second volutes can be easily disassembled for internal inspection. After the inspection is completed, the first and second volutes can be quickly and accurately aligned and then fixed. This makes the disassembly and fixing of the first and second volutes convenient and quick during the use of the device, facilitating internal inspection and maintenance. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the main body disassembled structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the internal structure of the main body of this utility model.

[0014] In the figure: 1-discharge pipe, 2-first volute, 3-fixed connecting plate, 4-first fixing bolt, 5-sliding support bracket, 6-second fixing bolt, 7-fixed support frame, 8-fixed mounting base, 9-second volute, 10-fixed threaded hole, 11-sliding adjustment slot, 12-protective cover, 13-impeller. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figure 1-3As shown, one embodiment of this utility model provides a centrifugal fan with a volute structure that is easy to disassemble quickly, including a discharge pipe 1, a first volute 2, a fixed connecting plate 3, a first fixing bolt 4, a sliding support bracket 5, a fixed support frame 7, a second volute 9, a protective cover 12, and an impeller 13. The first volute 2 and the second volute 9 are mirror-symmetrically distributed. The fixed connecting plate 3 is fixedly clamped to the inner edge of the first volute 2 and the second volute 9. The first fixing bolt 4 is threaded between the fixed connecting plate 3 provided on the first volute 2 and the second volute 9. The discharge pipe 1 is fixedly connected to the first volute 2 and the second volute 9. The sliding support bracket 5 is fixedly connected to the bottom end of the first volute 2. The fixed support frame 7 is fixedly connected to the bottom end of the second volute 9. The protective cover 12 is fixedly installed on the outer end of the first volute 2 by bolts. The impeller 13 is rotatably clamped inside the second volute 9, and the impeller 13 is located between the first volute 2 and the second volute 9.

[0017] A sealing rubber ring is securely placed between the fixed connecting plates 3 on the first volute 2 and the second volute 9 to provide a seal.

[0018] The bottom end of the fixed support frame 7 is fixedly connected to the fixed mounting base 8, which enables fixed support and installation.

[0019] The fixed mounting base 8 has a sliding adjustment slot 11. The bottom end of the sliding support bracket 5 is slidably engaged inside the sliding adjustment slot 11. The bottom end of the sliding support bracket 5 has symmetrical fixed threaded holes 10. The fixed mounting base 8 is threadedly mounted with a second fixing bolt 6.

[0020] The front end of the second fixing bolt 6 is inserted into the inside of the fixing threaded hole 10 to achieve an auxiliary locking and fixing effect.

[0021] Working Principle: During operation, when the fan needs to be disassembled for internal maintenance, the first fixing bolts 4 are unscrewed, and then the second fixing bolts 6 are unscrewed to remove them from the fixed mounting base 8. At this time, the first volute 2 can quickly separate from the second volute 9. Since the bottom end of the second volute 9 is fixed to the fixed mounting base 8 by the fixed support bracket 7, and the bottom end of the first volute 2 is slidably set on the fixed mounting base 8 by the sliding support bracket 5, the first volute 2 can be stably slid outward along the fixed mounting base 8 and separate from the second volute 9. This allows for internal maintenance after the first volute 2 and the second volute 9 are separated. After maintenance is completed, the first volute 2... The shell 2 moves horizontally along the fixed mounting base 8 via the sliding support bracket 5, allowing the first volute 2 to move and reset along the fixed mounting base 8. This enables quick and precise alignment between the first volute 2 and the second volute 9 without needing to readjust their alignment. Simply inserting the first fixing bolt 4 between the first volute 2 and the second volute 9 completes the quick and precise connection. This allows for easy disassembly and quick and precise reconnection of the first volute 2 and the second volute 9 during use, facilitating internal maintenance of both volute 2 and the second volute 9.

[0022] 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 centrifugal fan with a volute structure that is easy to disassemble quickly, comprising a discharge pipe (1), a first volute (2), a fixed connecting plate (3), a first fixing bolt (4), a sliding support bracket (5), a fixed support frame (7), a second volute (9), a protective cover (12), and an impeller (13), characterized in that: The first volute (2) and the second volute (9) are mirror-symmetrically distributed. The fixed connecting plate (3) is fixedly snapped into the inner edge of the first volute (2) and the second volute (9). The first fixing bolt (4) is threaded between the fixed connecting plate (3) on the first volute (2) and the second volute (9). The discharge pipe (1) is fixedly connected to the first volute (2) and the second volute (9). The sliding support bracket (5) is fixedly connected to the bottom end of the first volute (2). The fixed support bracket (7) is fixedly connected to the bottom end of the second volute (9). The protective cover (12) is fixedly installed on the outer end of the first volute (2) by bolts. The impeller (13) is rotatably snapped into the inside of the second volute (9), and the impeller (13) is located between the first volute (2) and the second volute (9).

2. A centrifugal fan with a volute structure that is easy to disassemble quickly, as described in claim 1, characterized in that: A sealing rubber ring is securely placed between the fixed connecting plate (3) provided on the first volute (2) and the second volute (9).

3. A centrifugal fan with a volute structure that is easy to disassemble quickly, as described in claim 2, characterized in that: The bottom end of the fixed support frame (7) is fixedly connected to the fixed mounting base (8).

4. A centrifugal fan with a volute structure that is easy to disassemble quickly, as described in claim 3, characterized in that: The fixed mounting base (8) is provided with a sliding adjustment slot (11), and the bottom end of the sliding support bracket (5) is slidably engaged inside the sliding adjustment slot (11). The bottom end of the sliding support bracket (5) is symmetrically provided with fixed threaded holes (10), and the fixed mounting base (8) is threadedly mounted with a second fixing bolt (6).

5. A centrifugal fan with a volute structure that is easy to disassemble quickly, as described in claim 4, characterized in that: The front end of the second fixing bolt (6) is inserted into the inside of the fixing threaded hole (10).

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