High-pressure centrifugal fan convenient to maintain

Abstract

The utility model discloses a high-pressure centrifugal fan convenient to maintain, which comprises a fan body and a support, an opening is arranged on one side of the fan body, and the support is fixedly arranged on the lower side of the fan body. The sealing cover is located on the side, close to the opening, of the fan body and used for covering the opening; the sliding piece is arranged on the support and used for switching the sealing cover between a first position and a second position, and when the sliding piece is located at the first position, the sealing cover covers the opening; at the second position, the sealing cover does not cover the sealing opening; and the positioning piece is arranged on the sliding piece. When the fan runs, the sliding piece keeps the sealing cover at the first position and is fixed through the positioning piece to prevent the sealing cover from loosening; when maintenance is needed, the sealing cover is pushed to the second position, the positioning piece unlocks the sealing cover, the sealing cover is allowed to move, the sealing cover can open the opening conveniently, overhauling is facilitated, after maintenance is completed, the sliding piece can drive the sealing cover to return to the first position, the positioning piece fixes the sealing cover, the sealing performance of the draught fan is kept, and therefore efficient maintenance and stable operation are achieved, and the dismounting risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal fan technology, specifically to a high-pressure centrifugal fan that is easy to maintain. Background Technology

[0002] High-pressure centrifugal fans, as important industrial equipment, are widely used in ventilation, dust removal, and air conditioning systems. However, existing centrifugal fans present certain problems when disassembling and maintaining them. Disassembly, in particular, is complicated by the numerous screws used, making the process cumbersome and increasing the difficulty for maintenance personnel. Adding to the complexity, the centrifugal fan's cover is typically quite heavy, further complicating removal. These issues not only affect maintenance efficiency but may also pose safety risks to operators during disassembly. Utility Model Content

[0003] In order to solve at least one of the technical problems mentioned in the background art, the purpose of this utility model is to provide a high-pressure centrifugal fan that is easy to maintain.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a high-pressure centrifugal fan that is easy to maintain, comprising a fan body, an opening on one side of the fan body, a bracket fixedly mounted on the lower side of the fan body; a cover, the cover being located on the side of the fan body near the opening, for covering the opening; and a slider, the slider being mounted on the bracket for switching the cover between a first position and a second position.

[0005] In the first position, the cover covers the opening; in the second position, the cover does not cover the opening; a positioning element, disposed on the slide, keeps the cover stationary relative to the fan body in the first position.

[0006] Furthermore, the sliding component includes a slide rail, which is fixedly mounted on a bracket. A slide groove is formed on the side of the slide rail near the cover along a first direction. The slide groove extends along the first direction to the side wall of the slide rail. A slide bar is slidably disposed in the slide groove and is fixedly connected to the cover.

[0007] Furthermore, the groove extends along the first direction to the side wall of the slide rail to form a slot, and there is one slot.

[0008] Furthermore, the positioning element includes a guide groove formed on the inner wall of the slide rail, the guide groove extending to the outer side of the slide rail in a second direction, the inner wall of the guide groove having a first slot and a second slot formed in a third direction, the first slot and the second slot extending from the outer side of the slide rail to the inner wall of the slide rail in a second direction, and a locking block slidably disposed on the slide bar in a third direction, the locking block sliding in the first slot, the guide groove or the second slot.

[0009] Furthermore, a spring is fixedly installed on the slide bar, and the end of the spring away from the slide bar is fixedly connected to the locking block. When the locking block is located in the guide groove, the spring accumulates a first elastic potential energy. When the locking block is located in the first locking groove or the second locking groove, the spring accumulates a second elastic potential energy. The first elastic potential energy is greater than the second elastic potential energy.

[0010] Furthermore, an arc-shaped baffle is provided on the side of the fan body near the opening.

[0011] Furthermore, a guardrail is fixedly installed on the side of the arc-shaped baffle away from the fan body, and the distance between the guardrail and the opposite surface of the fan body differs from the thickness of the cover edge by 0.05mm-0.15mm.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: When the fan is running, the sliding part keeps the cover in the first position and fixes it with the positioning part to prevent the cover from loosening; when maintenance is required, the cover is pushed to the second position, the positioning part unlocks the cover, allowing it to move and making it easy to open the cover for maintenance; after maintenance is completed, the sliding part can drive the cover back to the first position, the positioning part fixes the cover, and maintains the airtightness of the fan, thereby achieving efficient maintenance and stable operation and reducing the risk of disassembly. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 For the present utility model in Figure 1 Enlarged schematic diagram of a portion of the structure at point A;

[0015] Figure 3 This is a frontal view of the first variation of the overall structure of this utility model;

[0016] Figure 4 The second variation of the overall structure of this utility model is shown in frontal view.

[0017] In the diagram: 1. Fan body; 2. Bracket; 3. Cover; 31. Opening; 4. Sliding component; 41. Slide rail; 42. Slide groove; 43. Slide bar; 44. Groove; 5. Positioning component; 51. Guide groove; 52. First slot; 53. Second slot; 54. Locking block; 55. Spring; 6. Arc-shaped baffle; 7. Guardrail. Detailed Implementation

[0018] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Please see Figure 1 and Figure 2 This embodiment provides a high-pressure centrifugal fan that is easy to maintain, including a fan body 1, wherein the fan body 1 is compatible with common centrifugal fans on the market, and an opening 31 is provided on one side of the fan body 1; a bracket 2, which is fixedly installed on the lower side of the fan body 1; and a cover 3, which is located on the side of the fan body 1 near the opening 31 and is used to cover the opening 31.

[0020] Sliding member 4 is mounted on bracket 2 and is used to switch the cover 3 between a first position and a second position; in the first position, the cover 3 covers the opening 31; in the second position, the cover 3 does not cover the opening; positioning member 5 is mounted on sliding member 4, and in the first position, positioning member 5 keeps the cover 3 stationary relative to the fan body 1.

[0021] The high-pressure centrifugal fan guides and compresses airflow through the fan body 1, while the bracket 2 provides stable support for the entire fan, ensuring its stable operation. A cover 3 covers the opening 31 of the fan body 1 to prevent dust and other impurities from entering. When maintenance is required, the cover 3 is removed to expose the opening 31, facilitating internal maintenance of the fan body 1. A sliding component 4 allows the cover 3 to switch between two positions, enabling it to be moved away from the opening 31 when not in use, facilitating internal maintenance and cleaning. A positioning component 5 locks the cover 3 in its first position (covering the opening 31) to prevent accidental movement. The working principle is as follows: When the fan is running, the sliding member 4 keeps the cover 3 in the first position and fixes it with the positioning member 5 to prevent the cover 3 from loosening. When maintenance is required, the cover 3 is pushed to the second position, and the positioning member 5 unlocks the cover 3, allowing it to move and making it easy for the cover 3 to open the opening 31 for maintenance. After maintenance is completed, the sliding member 4 can drive the cover 3 back to the first position, and the positioning member 5 fixes the cover 3 to maintain the airtightness of the fan, thereby achieving efficient maintenance and stable operation.

[0022] Please see Figure 1 and Figure 2 The sliding component 4 includes a slide rail 41, which is fixedly mounted on the bracket 2. A groove 42 is formed along a first direction on the side of the slide rail 41 near the cover 3. The groove 42 extends along the first direction to the side wall of the slide rail 41. A slide strip 43 is slidably disposed within the groove 42, and the slide strip 43 is fixedly connected to the bracket 2. The first direction is... Figure 3The horizontal direction.

[0023] The slide rail 41 is fixedly mounted on the bracket 2 to guide and support the sliding of the slide bar 43, ensuring that the slide bar 43 moves smoothly in a predetermined direction during use. The slide groove 42 is opened along the first direction of the slide rail 41, allowing the slide bar 43 to slide inside it. This design facilitates the smooth movement of the cover 3 during use. The slide bar 43 is fixedly connected to the cover 3. Through the cooperation of the slide groove 42 and the slide rail 41, the cover 3 can be translated along the first direction, thereby effectively closing and opening the opening 31.

[0024] Please see Figure 1 and Figure 2 It should be noted that the slide groove 42 forms only one slot 44 on the slide rail 41, which makes it easy for the slide bar 43 to slide out from one side of the slide rail 41. At the same time, the slide bar 43 stops when it moves to the inner wall of the slide groove 42 away from the slot 44, thus playing a positioning role.

[0025] Please see Figure 1 , Figure 2 and Figure 3 The positioning element 5 includes a guide groove 51 formed in the inner wall of the slide groove 42. The guide groove 51 extends along a second direction to the outer side of the slide rail 41. A first slot 52 and a second slot 53 are formed in the inner wall of the guide groove 51 along a third direction. The first slot 52 and the second slot 53 extend along the second direction from the outer side of the slide rail 41 to the inner wall of the slide groove 42. A locking block 54 is slidably disposed on the slide bar 43 along a third direction. The locking block 54 slides within the first slot 52, the guide groove 51, or the second slot 53. The third direction is... Figure 3 The vertical direction, and the second direction is in the vertical direction. Figure 3 The direction perpendicular to the first direction and the third direction.

[0026] In this technical solution, a guide groove 51 is provided on the inner wall of the slide groove 42. The guide groove 51 extends to the outer side of the slide rail 41 in the second direction. Its main function is to provide guidance for the locking block 54, facilitating the movement of the locking block 54 within the guide groove 51. A first locking groove 52 and a second locking groove 53 are provided on the inner wall of the guide groove 51 in the third direction. These two grooves are used to cooperate with the locking block 54 on the slide bar 43, thereby ensuring the accurate alignment of the slide bar 43, that is, the switching of the cover 3 between the first position and the second position. The slide bar 43 is provided with a locking block 54 that slides in the third direction. The locking block 54 can slide in the first locking groove 52, the guide groove 51, or the second locking groove 53, thereby realizing the locking or unlocking state switching of the slide bar 43. When the locking block 54 slides from the guide groove 51 into the first locking groove 52, the cover 3 moves to the first position. Through the cooperation between the inner wall of the first locking groove 52 and the locking block 54, the movement of the cover 3 in the first direction is restricted. When the locking block 54 slides from the guide groove 51 into the second locking groove 53, the cover 3 moves to the second position. Through the cooperation between the inner wall of the second locking groove 53 and the locking block 54, the movement of the cover 3 in the first direction is restricted.

[0027] Please see Figure 3 and Figure 4 A spring 55 is fixedly installed on the slide bar 43. The end of the spring 55 away from the slide bar 43 is fixedly connected to the locking block 54. When the locking block 54 is located in the guide groove 51, the spring 55 accumulates a first elastic potential energy. When the locking block 54 is located in the first locking slot 52 or the second locking slot 53, the spring 55 accumulates a second elastic potential energy. The first elastic potential energy is greater than the second elastic potential energy. That is, when it is necessary to move the cover 3, the locking block 54 needs to be moved from the first locking slot 52 or the second locking slot 53 into the guide groove 51 before it can be moved. During the process of moving the locking block 54 from the first locking slot 52 or the second locking slot 53 into the guide groove 51, the spring 55 will be compressed. That is, the spring 55 will apply a force to the locking block 54 in a third direction away from the cover 3, which facilitates the locking block 54 to enter the first locking slot 52 or the second locking slot 53, and at the same time, prevents the locking block 54 from easily disengaging from the first locking slot 52 or the second locking slot 53.

[0028] Please see Figure 1 and Figure 2 An arc-shaped baffle 6 is provided on the side of the fan body 1 near the opening 31. The arc-shaped baffle 6 intercepts and positions the cover 3. A guardrail 7 is fixedly installed on the side of the arc-shaped baffle 6 away from the fan body 1. The distance between the guardrail 7 and the opposite surface of the fan body 1 differs from the thickness of the edge of the cover 3 by 0.05mm-0.15mm. This reduces the swaying of the cover 3 in the second direction.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A high-pressure centrifugal fan that is easy to maintain, characterized in that, Includes a fan body (1), and an opening (31) is provided on one side of the fan body (1). The bracket (2) is fixedly installed on the lower side of the fan body (1); A cover (3) is located on the side of the blower body (1) near the opening (31) and is used to cover the opening (31). Sliding element (4), which is mounted on bracket (2) for switching the cover (3) between a first position and a second position; In the first position, the cap (3) covers the opening (31); in the second position, the cap (3) does not cover the opening. The positioning element (5) is set on the sliding element (4). In the first position, the positioning element (5) keeps the cover (3) stationary relative to the fan body (1).

2. The easy-to-maintain high-pressure centrifugal fan according to claim 1, characterized in that, The slider (4) includes, The slide rail (41) is fixedly installed on the bracket (2). The slide rail (41) has a groove (42) along the first direction on the side near the cover (3). The groove (42) extends along the first direction to the side wall of the slide rail (41). A slide bar (43) is slidably arranged in the groove (42). The slide bar (43) is fixedly connected to the cover (3).

3. The easy-to-maintain high-pressure centrifugal fan according to claim 2, characterized in that, The groove (42) extends along the first direction to the side wall of the slide rail (41) to form a slot (44), and the slot (44) is one.

4. The easy-to-maintain high-pressure centrifugal fan according to claim 2, characterized in that, The positioning component (5) includes a guide groove (51) formed on the inner wall of the slide groove (42). The guide groove (51) extends along the second direction to the outside of the slide rail (41). The inner wall of the guide groove (51) is provided with a first slot (52) and a second slot (53) along the third direction. The first slot (52) and the second slot (53) extend along the second direction from the outside of the slide rail (41) to the inner wall of the slide groove (42). A locking block (54) is slidably provided on the slide bar (43) along the third direction. The locking block (54) slides in the first slot (52), the guide groove (51) or the second slot (53).

5. The easy-to-maintain high-pressure centrifugal fan according to claim 4, characterized in that, A spring (55) is fixedly installed on the slide bar (43). The end of the spring (55) away from the slide bar (43) is fixedly connected to the locking block (54). When the locking block (54) is located in the guide groove (51), the spring (55) accumulates a first elastic potential energy. When the locking block (54) is located in the first locking groove (52) or the second locking groove (53), the spring (55) accumulates a second elastic potential energy. The first elastic potential energy is greater than the second elastic potential energy.

6. The easy-to-maintain high-pressure centrifugal fan according to claim 1, characterized in that, An arc-shaped baffle (6) is provided on the side of the fan body (1) near the opening (31).

7. The easy-to-maintain high-pressure centrifugal fan according to claim 6, characterized in that, A guardrail (7) is fixedly installed on the side of the arc-shaped baffle (6) away from the fan body (1). The distance between the guardrail (7) and the opposite surface of the fan body (1) differs from the thickness of the edge of the cover (3) by 0.05mm-0.15mm.

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