Volute connecting structure of centrifugal fan

Abstract

The utility model provides a centrifugal fan volute connection structure which comprises a fixed shell, an adjustable air outlet mechanism is arranged on the fixed shell, a convenient maintenance mechanism is arranged on the fixed shell, the adjustable air outlet mechanism comprises an air outlet bin, the air outlet bin is fixedly installed on the inner wall of the fixed shell, and the air outlet bin is connected with the fixed shell. A connecting plate is fixedly mounted on the left side of the air outlet bin, and a flow dividing groove is formed in the side face of the connecting plate. Through the design of the connecting plates and the flow dividing grooves, air in the air outlet bin can be divided into the circular air outlet pipeline and the frame-shaped air outlet pipeline, the function of simultaneous air outlet through the two air outlet ends in different shapes is achieved, through the design of the flashboard, the flashboard can be rotated by means of the rotating shaft, the flashboard is rotated to the position parallel to one connecting plate, and the flashboard can be rotated to the position parallel to the other connecting plate. Therefore, the function that the circular air outlet pipeline or the frame-shaped air outlet pipeline conducts air outlet independently is achieved, the production requirement for double air outlet or switching of single air outlet is met, and meanwhile the equipment erecting cost is reduced.

Description

Technical Field

[0001] The utility model relates to a centrifugal fan volute connection structure, belonging to the technical field of centrifugal fan structures. 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. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and air intake of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selection of grains; wind tunnel wind source and inflation and propulsion of hovercraft, etc.

[0003] The existing centrifugal fan volute structure generally only has a single air outlet. In some usage scenarios, two air outlets of different shapes are required to discharge air simultaneously or separately. The existing structure cannot meet such production needs. Therefore, two centrifugal fans need to be designed separately to meet production needs, which will lead to higher costs. Utility Model Content

[0004] Based on the above background, the purpose of the present invention is to provide a centrifugal fan volute connection structure to solve the problems described in the background technology.

[0005] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0006] A centrifugal fan volute connection structure comprises a fixed shell, an adjustable air outlet mechanism is arranged on the fixed shell, and a convenient maintenance mechanism is arranged on the fixed shell.

[0007] The adjustable air outlet mechanism includes an air outlet bin, which is fixedly installed on the inner wall of a fixed shell, a connecting plate is fixedly installed on the left side of the air outlet bin, a diversion groove is opened on the side of the connecting plate, a circular air outlet duct is fixedly connected to the left side of the connecting plate, a frame-shaped air outlet duct located on the back of the circular air outlet duct is fixedly connected to the left side of the connecting plate, a rotating shaft is rotatably connected to the bottom of the inner wall of the air outlet bin, a gate is fixedly installed on the outer wall of the rotating shaft, the top of the rotating shaft extends to the top of the air outlet bin and is fixedly connected to a connecting bent rod, and a connecting round seat is fixedly installed on the end of the connecting bent rod away from the rotating shaft.

[0008] Preferably, a vertical sliding member is slidably connected to the inner wall of the connecting round seat, a pull handle is fixedly installed on the top of the vertical sliding member, and a pressure plate is fixedly installed on the bottom of the vertical sliding member.

[0009] Preferably, the bottom of the pressure plate is movably connected to the top of the air outlet bin, an elastic member is fixedly installed on the top of the pressure plate, and the top of the elastic member is fixedly connected to the bottom of the connecting round seat.

[0010] Preferably, the convenient maintenance mechanism comprises a raised seat, which is fixedly mounted on the top of the fixed shell, a limiting rod is slidably connected to the inner wall of the raised seat, and a receiving block is fixedly mounted on the front side of the limiting rod.

[0011] Preferably, a threaded rod is threadedly connected to the inner wall of the raised seat, the front side of the threaded rod is rotatably connected to the back side of the receiving block, and the bottom of the receiving block is rotatably connected to a rotating rod.

[0012] Preferably, the top of the rotating rod extends to the top of the receiving block and is fixedly connected with a rotating wheel, a connecting block is fixedly sleeved on the outer wall of the rotating rod, and a movable shell is fixedly installed on the outer wall of the connecting block.

[0013] Preferably, the back side of the movable shell is movably connected to the front side of the fixed shell, a circular hole is provided on the front side of the movable shell, a magnetic block is fixedly installed on the inner wall of the circular hole, and the back side of the magnetic block is magnetically connected to the front side of the fixed shell.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] Through the design of the connecting plate and the diversion groove, the gas inside the air outlet bin can be diverted to the circular air outlet duct and the frame air outlet duct, thereby realizing the function of simultaneous air discharge through two air outlet ends of different shapes. Through the design of the gate plate, it can be rotated with the help of a rotating shaft, and the gate plate can be rotated to a position parallel to one of the connecting plates, thereby realizing the function of separate air discharge of the circular air outlet duct or the frame air outlet duct, meeting the production needs of dual air outlet or switching to single air outlet, while reducing the cost of equipment installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the exploded structure of the adjustable air outlet mechanism of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the utility model connecting the bent rod and the connecting round seat;

[0020] Figure 4 It is a structural schematic diagram of the convenient maintenance mechanism of the utility model.

[0021] In the figure: 1. fixed shell; 2. adjustable air outlet mechanism; 21. air outlet compartment; 22. circular air outlet duct; 23. frame-shaped air outlet duct; 24. connecting plate; 25. diverter slot; 26. rotating shaft; 27. gate; 28. connecting bent rod; 29. ​​connecting round seat; 291. pressure plate; 292. elastic member; 293. vertical sliding member; 294. handle; 3. convenient maintenance mechanism; 31. raised seat; 32. limiting rod; 33. threaded rod; 34. receiving block; 35. rotating rod; 36. rotating wheel; 37. connecting block; 38. movable shell; 39. magnetic suction block. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described in detail below through specific embodiments and in combination with the accompanying drawings. It should be understood that the implementation of the utility model is not limited to the following embodiments, and any form of modification and / or change made to the utility model will fall within the protection scope of the utility model.

[0023] In the present invention, unless otherwise specified, all parts and percentages are weight units, and the equipment and raw materials used can be purchased from the market or are commonly used in the field. The methods in the following embodiments, unless otherwise specified, are conventional methods in the field. The components or equipment in the following embodiments, unless otherwise specified, are universal standard parts or components known to those skilled in the art, and their structures and principles are known to those skilled in the art through technical manuals or conventional experimental methods.

[0024] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. In the following detailed description, for ease of explanation, many specific details are described to provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments may also be implemented by those skilled in the art without these specific details.

[0025] like Figure 1-Figure 4As shown, a centrifugal fan volute connection structure comprises a fixed shell 1, an adjustable air outlet mechanism 2 is arranged on the fixed shell 1, a convenient maintenance mechanism 3 is arranged on the fixed shell 1, the adjustable air outlet mechanism 2 comprises an air outlet bin 21, the air outlet bin 21 is fixedly installed on the inner wall of the fixed shell 1, a connecting plate 24 is fixedly installed on the left side of the air outlet bin 21, a diversion groove 25 is opened on the side of the connecting plate 24, a circular air outlet duct 22 is fixedly connected to the left side of the connecting plate 24, a frame-shaped air outlet duct 23 located on the back side of the circular air outlet duct 22 is fixedly connected to the left side of the connecting plate 24, a rotating shaft 26 is rotatably connected to the bottom of the inner wall of the air outlet bin 21, a gate plate 27 is fixedly installed on the outer wall of the rotating shaft 26, and a top of the rotating shaft 26 A connecting bent rod 28 is extended to the top of the air outlet bin 21 and is fixedly connected thereto. A connecting round seat 29 is fixedly installed at one end of the connecting bent rod 28 away from the rotating shaft 26. Through the design of the connecting plate 24 and the diverter groove 25, the gas inside the air outlet bin 21 can be diverted to the circular air outlet duct 22 and the frame-shaped air outlet duct 23, thereby realizing the function of simultaneously discharging air through two air outlet ends of different shapes. Through the design of the gate plate 27, it can be rotated with the aid of the rotating shaft 26, and the gate plate 27 can be rotated to a position parallel to one of the connecting plates 24, thereby realizing the function of enabling the circular air outlet duct 22 or the frame-shaped air outlet duct 23 to discharge air separately, thereby meeting the production requirements of double air outlet or switching to single air outlet, while reducing the cost of equipment installation.

[0026] In this embodiment, a vertical sliding member 293 is slidably connected to the inner wall of the connecting round seat 29, a pull handle 294 is fixedly installed on the top of the vertical sliding member 293, a pressure plate 291 is fixedly installed on the bottom of the vertical sliding member 293, the bottom of the pressure plate 291 is movably connected to the top of the air outlet bin 21, an elastic member 292 is fixedly installed on the top of the pressure plate 291, the top of the elastic member 292 is fixedly connected to the bottom of the connecting round seat 29, through the initial elastic force of the elastic member 292, the bottom of the pressure plate 291 can be tightly fitted with the top of the air outlet bin 21, the positioning of the connecting bent rod 28 is completed, that is, the position of the gate plate 27 is locked by the rotating shaft 26, the pull handle 294 is pulled upward, the pressure plate 291 is separated from the air outlet bin 21, and then the rotating shaft 26 can be rotated to adjust the position of the gate plate 27, which is convenient for the operator to use.

[0027] In this embodiment, the convenient maintenance mechanism 3 includes a raised seat 31, which is fixedly installed on the top of the fixed shell 1, and a limit rod 32 is slidably connected to the inner wall of the raised seat 31, and a receiving block 34 is fixedly installed on the front of the limit rod 32, and a threaded rod 33 is threadedly connected to the inner wall of the raised seat 31, and the front of the threaded rod 33 is rotatably connected to the back of the receiving block 34, and the bottom of the receiving block 34 is rotatably connected to a rotating rod 35, and the top of the rotating rod 35 extends to the top of the receiving block 34 and is fixedly connected to a rotating wheel 36, and a connecting block 37 is fixedly sleeved on the outer wall of the rotating rod 35, and a movable shell 38 is fixedly installed on the outer wall of the connecting block 37, and the back of the movable shell 38 is movably connected to the front of the fixed shell 1, and a circular hole is opened on the front of the movable shell 38. A magnetic block 39 is fixedly installed on the inner wall, and the back side of the magnetic block 39 is magnetically connected to the front side of the fixed shell 1. The limit rod 32 is used to limit the forward and backward movement of the receiving block 34. The threaded rod 33 is rotated on the raised seat 31, so that the receiving block 34 can be moved to a position away from the fixed shell 1, and the movable shell 38 is simultaneously driven to separate from the front side of the fixed shell 1. Then, the rotating wheel 36 is rotated to cause the movable shell 38 to rotate around the left side, so that the right side of the movable shell 38 is open, which is convenient for the operator to maintain the components in the inner cavity of the fixed shell 1. After the maintenance is completed, the rotating wheel 36 is reset and rotated, and then the threaded rod 33 is reset and rotated, so that the movable shell 38 is magnetically attracted to the front side of the fixed shell 1 through the magnetic block 39.

[0028] The working principle of the volute connection structure of a centrifugal fan of the utility model is as follows: through the design of the connecting plate 24 and the diverter groove 25, the gas inside the air outlet bin 21 can be diverted to the circular air outlet duct 22 and the frame-shaped air outlet duct 23, so as to realize the function of simultaneously discharging air through two air outlet ends of different shapes, and the pull handle 294 is pulled upward to separate the pressure plate 291 from the air outlet bin 21, and then the rotating shaft 26 can be rotated to adjust the position of the gate plate 27, and the gate plate 27 is rotated to a position parallel to one of the connecting plates 24, so as to realize the function of making the circular air outlet duct 22 or the frame-shaped air outlet duct 23 discharge air separately.

[0029] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A centrifugal fan volute connection structure, comprising a fixed housing (1), characterized in that: An adjustable air outlet mechanism (2) is provided on the fixed housing (1), and a convenient maintenance mechanism (3) is provided on the fixed housing (1); The adjustable air outlet mechanism (2) comprises an air outlet bin (21), the air outlet bin (21) being fixedly mounted on the inner wall of the fixed shell (1), a connecting plate (24) being fixedly mounted on the left side of the air outlet bin (21), a diversion groove (25) being provided on the side of the connecting plate (24), a circular air outlet duct (22) being fixedly connected to the left side of the connecting plate (24), a frame-shaped air outlet duct (23) located on the back side of the circular air outlet duct (22) being fixedly connected to the left side of the connecting plate (24), a rotating shaft (26) being rotatably connected to the bottom of the inner wall of the air outlet bin (21), a gate plate (27) being fixedly mounted on the outer wall of the rotating shaft (26), a top of the rotating shaft (26) extending to the top of the air outlet bin (21) and being fixedly connected to a connecting bent rod (28), a connecting round seat (29) being fixedly mounted on one end of the connecting bent rod (28) away from the rotating shaft (26).

2. The centrifugal fan volute connection structure according to claim 1, characterized in that: A vertical sliding member (293) is slidably connected to the inner wall of the connecting round seat (29), a pull handle (294) is fixedly mounted on the top of the vertical sliding member (293), and a pressing plate (291) is fixedly mounted on the bottom of the vertical sliding member (293).

3. A centrifugal fan volute connection structure according to claim 2, characterized in that: The bottom of the pressing plate (291) is movably connected to the top of the air outlet bin (21), an elastic member (292) is fixedly mounted on the top of the pressing plate (291), and the top of the elastic member (292) is fixedly connected to the bottom of the connecting round seat (29).

4. The centrifugal fan volute connection structure according to claim 1, characterized in that: The convenient maintenance mechanism (3) comprises a raised seat (31), the raised seat (31) being fixedly mounted on the top of the fixed housing (1), a limiting rod (32) being slidably connected to the inner wall of the raised seat (31), and a receiving block (34) being fixedly mounted on the front side of the limiting rod (32).

5. The centrifugal fan volute connection structure according to claim 4, characterized in that: A threaded rod (33) is threadedly connected to the inner wall of the raised seat (31); the front side of the threaded rod (33) is rotatably connected to the back side of a receiving block (34); and the bottom side of the receiving block (34) is rotatably connected to a rotating rod (35).

6. A centrifugal fan volute connection structure according to claim 5, characterized in that: The top of the rotating rod (35) extends to the top of the receiving block (34) and is fixedly connected to a rotating wheel (36); a connecting block (37) is fixedly sleeved on the outer wall of the rotating rod (35); and a movable housing (38) is fixedly mounted on the outer wall of the connecting block (37).

7. A centrifugal fan volute connection structure according to claim 6, characterized in that: The back side of the movable shell (38) is movably connected to the front side of the fixed shell (1); a circular hole is provided on the front side of the movable shell (38); a magnetic block (39) is fixedly mounted on the inner wall of the circular hole; and the back side of the magnetic block (39) is magnetically connected to the front side of the fixed shell (1).

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