Centrifugal fan

Abstract

The utility model discloses a centrifugal fan which comprises a centrifugal fan body, an outlet assembly is arranged at one end of the centrifugal fan body, a connecting assembly is attached to the upper surface of the outlet assembly, and locking mechanisms are arranged on the two sides between the outlet assembly and the connecting assembly. The strip-shaped grooves are formed in the two opposite sides of the outlet assembly and the connecting assembly correspondingly. The rotating blocks are connected with the inner cavities of the two adjacent strip-shaped grooves in a sliding and penetrating manner; and a limiting mechanism is arranged at the bottom of the locking strip. Through the arrangement mode that the locking mechanism is matched with the limiting mechanism, the locking strip can be clamped on the outlet assembly and the connecting assembly through rotation of the rotating block, the outlet assembly and the connecting assembly can be conveniently and rapidly locked, the rotating block cannot rotate at will through the limiting mechanism, and the locking effect is good. The stability between the outlet assembly and the connecting assembly is improved, and the outlet assembly and the connecting assembly are convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fans, in particular to a centrifugal fan. Background Art

[0002] A centrifugal fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. A centrifugal fan is a complex device that mainly consists of an air inlet, air valve, impeller, motor, and air outlet.

[0003] Application No. 202320737918.9 discloses a centrifugal fan, comprising a support frame, a drive assembly being provided on the surface of the support frame, a rotating shaft and a connecting shaft being fixedly provided on the left side of the support frame through the drive assembly, a transmission assembly being provided on the surface of the rotating shaft and the surface of the connecting shaft, a support plate being provided on the top of the support frame through the drive assembly, a fixing plate being fixedly provided on the top of the support plate, and a centrifugal fan body being fixedly provided on the surface of the fixing plate. By cooperating with the drive assembly and the transmission assembly, the drive assembly pushes the support plate to move, the support plate drives the fixed plate to move, and the fixed plate drives the centrifugal fan body to move upward, thereby achieving the purpose of facilitating the adjustment of the height of the centrifugal fan according to usage requirements. However, the existing air outlet needs to be connected to an external pipe to achieve air outlet in different positions and directions. However, the existing air outlet and the external pipe are generally tightly connected by a clamp or bolt, but it takes a long time to directly tighten the clamp or bolt, and additional tools such as wrenches are required to achieve disassembly and assembly between the air outlet and the external pipe. The disassembly and assembly process is complicated, which affects the convenience of disassembly and assembly between the air outlet and the external pipe. Utility Model Content

[0004] The purpose of the present invention is to provide a centrifugal fan to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a centrifugal fan, comprising: a centrifugal fan body, an outlet assembly provided at one end of the centrifugal fan body, a connecting assembly attached to the upper surface of the outlet assembly, and locking mechanisms provided on both sides between the outlet assembly and the connecting assembly, the locking mechanisms comprising:

[0006] Strip grooves, the strip grooves are respectively opened on two opposite sides of the outlet component and the connecting component;

[0007] A rotating block, wherein the rotating block is slidably interlaced with the inner cavities of two adjacent strip-shaped grooves;

[0008] The locking strip is fixed to the bottom end of the rotating block, the locking strip is rotatably connected to one side of the bottom of the outlet assembly, and a limiting mechanism is provided at the bottom of the locking strip.

[0009] Preferably, the outlet assembly includes: an air outlet pipe and a plurality of grooves, the air outlet pipe is fixed to one end of the centrifugal fan body, and the plurality of grooves are opened at the end of the air outlet pipe in a circular array.

[0010] Preferably, the connecting assembly includes: a connecting pipe and a plurality of protrusions, the connecting end of the connecting pipe is arranged opposite to the air outlet pipe, the plurality of protrusions are fixed in a circular array to one end of the connecting pipe, the protrusions are movably engaged with the inner cavity of the groove, and the opposite ends of the air outlet pipe and the connecting pipe are fixedly connected with a sealing gasket.

[0011] Preferably, the limiting mechanism includes:

[0012] A plurality of elastic components, wherein the plurality of elastic components are respectively arranged at both ends of the locking strip;

[0013] A plurality of card slots, wherein the plurality of card slots are respectively provided on both sides of the outer wall of the air outlet duct;

[0014] A drawstring is provided between two adjacent elastic components.

[0015] Preferably, the elastic component includes:

[0016] A slide groove is provided at the end of the locking strip;

[0017] a spring block, the spring block being slidably connected to the inner cavity of the chute;

[0018] A compression spring, wherein the compression spring is fixed between the slide groove and the elastic block;

[0019] The connecting groove is opened at the bottom of the sliding groove.

[0020] Preferably, the elastic block is slidably connected to the inner cavity of the card slot, and the pull rope is slidably and interlacedly connected to the inner cavities of two adjacent connecting slots respectively.

[0021] Preferably, both ends of the pull rope are respectively fixed to the bottoms of two adjacent elastic blocks, and the end of the pull rope is sleeved in the inner cavity of the compression spring.

[0022] The technical effects and advantages of this utility model are:

[0023] The utility model adopts the arrangement mode of cooperating the locking mechanism and the limiting mechanism, and utilizes the rotation of the rotating block to enable the locking strip to be stuck on the outlet assembly and the connecting assembly, which is convenient for quickly locking the outlet assembly and the connecting assembly, and the limiting mechanism prevents the rotating block from rotating at will, thereby improving the stability between the outlet assembly and the connecting assembly and facilitating the convenient disassembly and assembly between the outlet assembly and the connecting assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a schematic diagram of the overall structure of the utility model.

[0025] Figure 2 This is a front structural diagram of the rotating block of the utility model.

[0026] Figure 3 For this utility model Figure 2 Schematic diagram of the locally enlarged structure at point A in the middle.

[0027] In the figure: 1. Centrifugal fan body; 2. Outlet assembly; 21. Air outlet pipe; 22. Groove; 3. Connecting assembly; 31. Connecting pipe; 32. Bump; 4. Locking mechanism; 41. Strip groove; 42. Rotating block; 43. Locking strip; 5. Limiting mechanism; 51. Elastic assembly; 511. Slide groove; 512. Spring block; 513. Compression spring; 514. Connecting groove; 52. Card slot; 53. Pull rope; 6. Sealing gasket. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] The utility model provides Figure 1-3 A centrifugal fan is shown, comprising:

[0030] The centrifugal fan body 1 has a lifting frame installed at the bottom of the centrifugal fan body 1 to facilitate height adjustment of the centrifugal fan body 1. An outlet assembly 2 is provided at one end of the centrifugal fan body 1. The outlet assembly 2 includes an air outlet pipe 21 and a plurality of grooves 22. The air outlet pipe 21 is fixed to one end of the centrifugal fan body 1. The plurality of grooves 22 are arranged in a circular array at the end of the air outlet pipe 21.

[0031] Furthermore, a connecting assembly 3 is attached to the upper surface of the outlet assembly 2. The connecting assembly 3 includes: a connecting pipe 31 and a plurality of protrusions 32. The connecting end of the connecting pipe 31 is arranged opposite to the air outlet pipe 21. The plurality of protrusions 32 are fixed to one end of the connecting pipe 31 in a circular array. The protrusions 32 are movably engaged with the inner cavity of the groove 22. The arrangement of the protrusions 32 and the groove 22 facilitates the connecting pipe 31 and the air outlet pipe 21 to be stably arranged relative to each other, and the connecting pipe 31 and the air outlet pipe 21 will not move randomly.

[0032] Furthermore, a locking mechanism 4 is provided on both sides between the outlet component 2 and the connecting component 3, and the locking mechanism 4 includes: a strip groove 41, a rotating block 42 and a locking strip 43. The strip grooves 41 are respectively opened on the opposite sides of the outlet component 2 and the connecting component 3, and the strip grooves 41 are respectively opened on both sides of the opposite ends of the connecting pipe 31 and the air outlet pipe 21. The rotating block 42 is slidably connected with the inner cavity of the two adjacent strip grooves 41. The rotating block 42 is fixedly composed of two cylindrical structures of different diameters. The locking strip 43 is fixed to the bottom end of the rotating block 42. The locking strip 43 is rotatably connected to one side of the bottom of the outlet component 2. The locking strip 43 is a long strip structure. The locking strip 43 is slidably connected with the inner cavity of the two adjacent strip grooves 41, so that the locking strip 43 can be constructed in a cross structure under the inner cavity of the strip groove 41.

[0033] Furthermore, a limiting mechanism 5 is provided at the bottom of the locking strip 43. The limiting mechanism 5 includes: a plurality of elastic components 51, a plurality of card slots 52, and a pull rope 53. The plurality of elastic components 51 are respectively provided at both ends of the locking strip 43, and the plurality of card slots 52 are respectively opened on both sides of the outer wall of the air outlet duct 21. The pull rope 53 is provided between two adjacent elastic components 51 and is provided at the bottom of the locking strip 43, so that the operator can easily pull the pull rope 53 at the bottom of the locking strip 43.

[0034] Specifically, the elastic component 51 includes: a slide groove 511, a spring block 512, a compression spring 513 and a connecting groove 514. The slide groove 511 is opened at the end of the locking strip 43, the spring block 512 is slidably connected to the inner cavity of the slide groove 511, the compression spring 513 is fixed between the slide groove 511 and the spring block 512, the connecting groove 514 is opened at the bottom of the slide groove 511, the spring block 512 is slidably connected to the inner cavity of the card slot 52, the pull rope 53 is respectively slidably connected to the inner cavities of two adjacent connecting grooves 514, and the pull rope 514 is connected to the inner cavities of the two adjacent connecting grooves 514. The two ends of 3 are respectively fixed to the bottom of two adjacent elastic blocks 512, and the end of the pull rope 53 is sleeved in the inner cavity of the compression spring 513. The pull rope 53 is slidably connected with the inner cavity of the slide groove 511. By pulling the pull rope 53, it is easy to pull the elastic block 512, so that the elastic block 512 can be separated from the inner cavity of the card slot 52, so that the locking strip 43 can be stably stuck at the bottom of the air outlet pipe 21, so that the locking strip 43 will not rotate, and the air outlet pipe 21 and the connecting pipe 31 are conveniently disassembled and assembled.

[0035] Furthermore, a sealing gasket 6 is fixedly connected to the opposite ends of the air outlet pipe 21 and the connecting pipe 31. The sealing gasket 6 facilitates increasing the sealing between the air outlet pipe 21 and the connecting pipe 31, so that the wind in the centrifugal fan can flow stably from the air outlet pipe 21 to the inner cavity of the connecting pipe 31.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A centrifugal fan comprising: A centrifugal fan body (1) is characterized in that: an outlet assembly (2) is provided at one end of the centrifugal fan body (1), a connecting assembly (3) is attached to the upper surface of the outlet assembly (2), and locking mechanisms (4) are provided on both sides between the outlet assembly (2) and the connecting assembly (3), and the locking mechanism (4) includes: Strip grooves (41), the strip grooves (41) are respectively opened on two opposite sides of the outlet component (2) and the connecting component (3); A rotating block (42), wherein the rotating block (42) is slidably connected with the inner cavities of two adjacent strip-shaped grooves (41); A locking strip (43) is fixed to the bottom end of the rotating block (42), the locking strip (43) is rotatably engaged with one side of the bottom of the outlet assembly (2), and a limiting mechanism (5) is provided at the bottom of the locking strip (43).

2. A centrifugal fan according to claim 1, characterized in that: The outlet assembly (2) comprises an air outlet pipe (21) and a plurality of grooves (22), wherein the air outlet pipe (21) is fixed to one end of the centrifugal fan body (1), and the plurality of grooves (22) are arranged in a circular array at the end of the air outlet pipe (21).

3. A centrifugal fan according to claim 2, characterized in that: The connecting assembly (3) comprises: a connecting pipe (31) and a plurality of protrusions (32); the connecting end of the connecting pipe (31) is arranged opposite to the air outlet pipe (21); the plurality of protrusions (32) are fixed to one end of the connecting pipe (31) in a ring array; the protrusions (32) are movably engaged with the inner cavity of the groove (22); and the opposite ends of the air outlet pipe (21) and the connecting pipe (31) are both fixedly connected with a sealing gasket (6).

4. A centrifugal fan according to claim 2, characterized in that: The limiting mechanism (5) comprises: A plurality of elastic components (51), wherein the plurality of elastic components (51) are respectively arranged at both ends of the locking strip (43); A plurality of card slots (52), wherein the plurality of card slots (52) are respectively provided on both sides of the outer wall of the air outlet pipe (21); A drawstring (53) is provided between two adjacent elastic components (51).

5. A centrifugal fan according to claim 4, characterized in that: The elastic component (51) comprises: A sliding groove (511), wherein the sliding groove (511) is provided at an end portion of the locking strip (43); a spring block (512), wherein the spring block (512) is slidably connected to the inner cavity of the chute (511); A compression spring (513), wherein the compression spring (513) is fixed between the slide groove (511) and the elastic block (512); A connecting groove (514) is provided at the bottom of the sliding groove (511).

6. A centrifugal fan according to claim 5, characterized in that: The elastic block (512) is slidably connected to the inner cavity of the card slot (52), and the pull rope (53) is slidably connected to the inner cavities of two adjacent connection slots (514).

7. A centrifugal fan according to claim 6, characterized in that: The two ends of the pull rope (53) are respectively fixed to the bottoms of two adjacent elastic blocks (512), and the end of the pull rope (53) is sleeved in the inner cavity of the compression spring (513).

Images