Air blower

Abstract

The utility model provides an air blower, and relates to the technical field of gas conveying equipment, and aims to solve the problem that the air outlet area of an air blower in the prior art is fixed, the air blower comprises an adjusting mechanism and an air inlet cover, a plurality of air inlet holes are formed in the air inlet cover, the adjusting mechanism comprises a shifting block and a plurality of air baffle plates, and the shifting block is arranged on the air inlet cover. The multiple wind shields are arranged on the rear side of the air inlet cover, the shifting block is connected with the multiple wind shields, the shifting block penetrates through the air inlet hole to the front side of the air inlet cover, and the shifting block rotates in the air inlet hole and can drive the multiple wind shields to change the air inlet area of the air inlet hole. According to the air blower, the air outlet amount of the air blower is effectively adjusted, the rotating speed of the air blower does not need to be controlled by a controller, and the air blower is more stable and lower in noise in the operation process.

Description

Technical Field

[0001] The utility model relates to the technical field of gas conveying equipment, in particular to a blower. Background Art

[0002] As a wind conveying device, the blower is widely used in the fields of chemical industry, food processing, etc. The blower generally has a high-speed rotating rotor. The blades on the rotor drive the air to move at high speed. The centrifugal force makes the air flow along the involute line in the involute-shaped casing to the blower outlet. The high-speed airflow has a certain wind pressure, and new air enters from the center of the casing for replenishment.

[0003] The blower outlet currently used is of fixed size, the blower outlet area is constant, and the flow rate and air volume are also constant. The blower flow is generally regulated by controlling the speed of the controller to change the air flow. Once the electrical signal of the controller is affected, the regulation of the air volume will be affected, which makes it difficult to reliably regulate the air volume. Utility Model Content

[0004] The purpose of the utility model is to provide a blower to solve the problem of fixed air outlet area of ​​the blower in the prior art. The blower of the utility model effectively adjusts the air outlet volume of the blower and does not require a controller to control the speed of the blower. The blower is more stable and has lower noise during operation.

[0005] The utility model provides a blower, comprising an adjusting mechanism and an air inlet hood, wherein a plurality of air inlet holes are arranged on the air inlet hood, the adjusting mechanism comprises a toggle block and a plurality of wind shields, the plurality of wind shields are respectively arranged on the rear side of the air inlet hood, the toggle block is connected to the plurality of wind shields and the toggle block passes through the air inlet hole to the front side of the air inlet hood, and the toggle block rotates in the air inlet hole to drive the plurality of wind shields to change the air inlet area of ​​the air inlet hole.

[0006] As a preferred solution of the present utility model, the number of the wind shields is equal to the number of the air inlet holes, and the plurality of wind shields are arranged on the same plane.

[0007] As a preferred solution of the utility model, the plurality of wind shields are connected to the middle of the air inlet cover through a connecting shaft, the plurality of air inlet holes are arranged around the connecting shaft, and the air inlet area of ​​the air inlet holes can be adjusted when the wind shields rotate around the connecting shaft.

[0008] As a preferred solution of the utility model, the width of the wind shield gradually increases from one end to the other end, the narrow sides of multiple wind shields are connected by a center plate, the wide sides of two adjacent wind shields are connected by a connecting edge, and a ventilation hole is formed between two adjacent wind shields, and the shape and size of the air inlet hole correspond to the wind shield.

[0009] As a preferred solution of the utility model, the wind shield has a first arcuate edge, a second arcuate edge and a third arcuate edge, the curvature of the first arcuate edge is greater than the curvature of the second arcuate edge and the first arcuate edge and the second arcuate edge are bent toward the same side, the two ends of the third arcuate edge are respectively connected to the first arcuate edge and the second arcuate edge and the third arcuate edge is centered on the connecting axis.

[0010] As a preferred solution of the present invention, the plurality of wind shields are of an integrated structure.

[0011] As a preferred solution of the utility model, the toggle block is connected to the first arcuate edge or the second arcuate edge of each wind shield plate, and a plurality of the toggle blocks are respectively arranged to pass through a plurality of the air inlet holes.

[0012] As a preferred embodiment of the present invention, it also includes a volute casing, a rear casing, a motor and a wind wheel, wherein the air inlet cover is detachably connected to the front side of the volute casing, the rear casing is detachably connected to the rear side of the volute casing, the motor is installed in the rear casing and its output shaft extends into the volute casing, the wind wheel is arranged in the volute casing and connected to the output shaft of the motor; the rear casing includes a first casing segment and a second casing segment, the first casing segment is detachably connected to the rear end of the second casing segment, and the front end of the second casing segment is connected to the volute casing.

[0013] As a preferred solution of the utility model, it also includes a dustproof net, which is installed on the front side of the volute casing and arranged on the rear sides of the adjustment mechanism and the air inlet cover.

[0014] As a preferred solution of the utility model, an inner shell is arranged in the rear shell, the motor is connected to the inner shell, the inner shell includes a first inner shell and a second inner shell, the first inner shell is detachably connected to the rear end of the second inner shell, and the front end of the second inner shell is connected to the volute shell.

[0015] Compared with the prior art, the utility model has the following positive effects:

[0016] The blower provided by the utility model includes an adjustment mechanism and an air inlet hood. A plurality of air inlet holes are arranged on the air inlet hood. The adjustment mechanism includes a toggle block and a plurality of wind shields. The plurality of wind shields are respectively arranged on the rear side of the air inlet hood. The toggle block is connected to the plurality of wind shields and the toggle block passes through the air inlet hole to the front side of the air inlet hood. The rotation of the toggle block in the air inlet hole can drive the plurality of wind shields to change the air inlet area of ​​the air inlet hole. The blower in the utility model can adjust the air inlet area of ​​the air inlet hole on the air inlet hood through the adjustment mechanism, thereby adjusting the air intake volume and affecting the gas flow rate, so that the air output of the blower can be effectively adjusted, and a controller is not required to control the rotation speed of the blower. The blower is more stable and has lower noise during operation. When the wind shield blocks part of the air inlet hole, the air inlet area of ​​the air inlet hole is reduced, the air intake volume is reduced, and the air output of the blower is also reduced accordingly. In addition, the air inlet cover is sealed around the air inlet cover. During the process of adjusting the air inlet hole, the sealing around the air inlet cover allows the gas to enter the blower only from the air inlet hole, reducing the fluctuation of the air intake amount and making the blower run more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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 described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the blower of the utility model;

[0019] Figure 2 An exploded view of the blower of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the blower of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the rear casing on the rear side of the volute casing of the utility model;

[0022] Figure 5 It is a schematic structural diagram of the inner shell when the first shell section in the utility model is removed.

[0023] In the figure: 1. adjustment mechanism; 11. wind shield; 111. first arcuate edge; 112. second arcuate edge; 113. third arcuate edge; 12. toggle block; 13. center plate; 14. connecting edge; 15. ventilation hole; 2. air inlet cover; 21. air inlet hole; 3. dust screen; 4. volute casing; 41. air inlet; 42. air outlet; 5. connecting shaft; 6. rear casing; 61. first casing section; 62. second casing section; 7. inner casing; 71. first inner casing; 72. second inner casing; 8. motor; 81. output shaft; 9. wind wheel. DETAILED DESCRIPTION

[0024] In the description of the present utility model, it should be noted that, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "front end", "back end", "head", "tail" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplification, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0026] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0027] Embodiment 1:

[0028] This embodiment provides a blower, such as Figure 1-Figure 5 As shown, it includes an adjustment mechanism 1 and an air inlet cover 2. The air inlet cover 2 is provided with a plurality of air inlet holes 21, and the adjustment mechanism 1 includes a toggle block 12 and a plurality of wind shields 11, which are respectively provided at the rear side of the air inlet cover 2.

[0029] The toggle block 12 is connected to the plurality of wind shields 11 and passes through the air inlet hole 21 to the front side of the air inlet cover 2 . The rotation of the toggle block 12 in the air inlet hole 21 can drive the plurality of wind shields 11 to change the air inlet area of ​​the air inlet hole 21 .

[0030] The blower in this embodiment can adjust the air inlet area of ​​the air inlet hole 21 on the air inlet cover 2 through the adjustment mechanism 1, thereby adjusting the air intake volume and affecting the gas flow rate, so that the air output of the blower can be effectively adjusted, and there is no need for a controller to control the rotation speed of the blower. The blower is more stable and has lower noise during operation. When the wind shield 11 blocks part of the air inlet hole 21, the air inlet area of ​​the air inlet hole 21 is reduced, the air intake volume is reduced, and the air output of the blower will also be reduced accordingly. In addition, the air inlet cover 2 is sealed around it. In the process of adjusting the air inlet hole 21, the sealing around the air inlet cover 2 allows the gas to enter the blower only from the air inlet hole 21, reducing the fluctuation of the air intake volume and making the blower run more smoothly.

[0031] The blower in this embodiment has the characteristics of high efficiency, stability, low noise, etc., and can be widely used in the fields of chemical industry, food processing, etc. for gas transportation.

[0032] As a preferred embodiment, the number of wind shields 11 is equal to the number of air inlet holes 21, and each wind shield 11 adjusts the air intake of one air inlet hole 21. The plurality of wind shields 11 are arranged on the same plane. The plane where the plurality of wind shields 11 are located is arranged on the rear side of the air inlet cover 2.

[0033] Specifically, the number of windshield plates 11 may be 2, 3 or 4. Figure 1 Three wind shields 11 and three air inlet holes 21 are provided in the middle.

[0034] As a preferred embodiment, the plurality of wind shields 11 are connected to the middle of the air inlet cover 2 through the connecting shaft 5, and the plurality of air inlet holes 21 are arranged around the connecting shaft 5. When the wind shield 11 rotates around the connecting shaft 5, the air inlet area of ​​the air inlet hole 21 can be adjusted. The plurality of air inlet holes 21 are evenly distributed around the connecting shaft 5. The plurality of wind shields 11 can adjust the air inlet area of ​​the plurality of air inlet holes 21 at the same time, and the blocking area of ​​a single air inlet hole 21 can be changed by rotating a single wind shield 11, thereby adjusting the air inlet area of ​​a single air inlet hole 21.

[0035] As a preferred embodiment, the width of the wind shield 11 gradually increases from one end to the other end, the narrow sides of the plurality of wind shields 11 are connected by a central plate 13 , and the connecting shaft 5 is connected to the center of the central plate 13 .

[0036] The wide sides of two adjacent wind shields 11 are connected by a connecting edge 14 , and a ventilation hole 15 is formed between the two adjacent wind shields 11 . The shape and size of the air inlet hole 21 correspond to those of the wind shield 11 .

[0037] When the wind shield 11 rotates to cover the air inlet 21, the air inlet 21 is closed. When the wind shield 11 rotates to the point where the ventilation hole 15 corresponds to the air inlet 21, the air inlet area of ​​the air inlet 21 is the largest.

[0038] As a preferred embodiment, the windshield 11 has a first arcuate edge 111, a second arcuate edge 112 and a third arcuate edge 113. The curvature of the first arcuate edge 111 is greater than that of the second arcuate edge 112, and the first arcuate edge 111 and the second arcuate edge 112 are bent toward the same side, and the two ends of the third arcuate edge 113 are respectively connected to the first arcuate edge 111 and the second arcuate edge 112, and the third arcuate edge 113 is centered on the connecting shaft 5. The center plate 13 is circular, and the connecting edge 14 is arc-shaped and is on the same circumference as the third arcuate edge 113. The shape of the windshield 11 is conducive to the flow of air.

[0039] As a preferred embodiment, the plurality of windshield plates 11 are of an integrated structure. The adjustment mechanism 1 can be of an integrated structure, formed by integrally processing a metal plate.

[0040] It should be noted that the adjustment mechanism 1 formed by multiple wind shields 11, a center plate 13, a connecting edge 14 and a toggle block 12 can be an integrated structure, and the adjustment mechanism 1 can be rotatably connected to the air inlet hood 2 through an annular groove. For example, an annular groove is provided around the air inlet hood 2, and the periphery of the adjustment mechanism 1 is stuck in the annular groove. When the toggle block 12 is toggled, the adjustment mechanism 1 can be driven to rotate in the annular groove, and the relative rotation of the adjustment mechanism 1 and the air inlet hood 2 can also be realized.

[0041] A plurality of wind shields 11 may also be rotatably connected to the air inlet cover 2 respectively.

[0042] As a preferred embodiment, the toggle block 12 is connected to the first arcuate edge 111 or the second arcuate edge 112 of each windshield 11, and multiple toggle blocks 12 are respectively arranged to pass through multiple air inlet holes 21. The windshield 11 can be driven to rotate by toggling the toggle block 12, which is convenient for adjustment.

[0043] When the multiple wind shields 11 are of an integrated structure, a toggle block 12 may be provided, and the multiple wind shields 11 can be driven to rotate simultaneously by the toggle block 12. When the multiple wind shields 11 are separately provided and are respectively rotatably connected to the air inlet cover 2, each wind shield 11 needs to be provided with a toggle block 12, so that different toggle blocks 12 can drive the corresponding wind shield 11 to rotate.

[0044] As a preferred implementation mode, Figure 3-Figure 5 As shown, the blower provided in this embodiment further includes a volute housing 4, a rear housing 6, a motor 8 and a wind wheel 9. The air inlet cover 2 is detachably connected to the front side of the volute housing 4, the rear housing 6 is detachably connected to the rear side of the volute housing 4, the motor 8 is installed in the rear housing 6 and its output shaft 81 extends into the volute housing 4, and the wind wheel 9 is arranged in the volute housing 4 and connected to the output shaft 81 of the motor. The output shaft 81 is connected to the rear side of the volute housing 4 through a bearing.

[0045] Specifically, an air inlet 41 is provided at the front side of the volute casing 4 , and the air inlet cover 2 is correspondingly installed at the air inlet 41 and is sealed and connected to the periphery of the air inlet 41 .

[0046] The rear housing 6 includes a first housing segment 61 and a second housing segment 62. The first housing segment 61 is detachably connected to the rear end of the second housing segment 62, and the front end of the second housing segment 62 is connected to the volute housing 4. The ends of the first housing segment 61 and the second housing segment 62 connected are each provided with a plurality of corresponding connecting ears, which are connected by bolts passing through the connecting ears. The first housing segment 61 can be disassembled from the second housing segment 62, which is convenient for repairing the motor.

[0047] The volute housing 4 is provided with an air outlet nozzle, which has an air outlet 42 communicated with the inner cavity of the volute housing 4. The air outlet nozzle can be connected to a pipeline, equipment, etc. that needs to supply air.

[0048] The motor 8 drives the wind wheel 9 to rotate, driving the air flow from the air inlet cover 2 into the volute casing 4 and out from the air outlet 42 .

[0049] As a preferred implementation, the blower provided in this embodiment further includes a dustproof net 3, which is installed on the front side of the volute housing 4 and arranged on the rear side of the adjustment mechanism 1 and the air inlet cover 2. The dustproof net 3 can reduce the entry of dust and impurities into the blower and improve the service life of the blower.

[0050] As a preferred embodiment, an inner housing 7 is provided in the rear housing 6, and the motor 8 is connected to the inner housing 7. The inner housing 7 includes a first inner housing 71 and a second inner housing 72. The first inner housing 71 is detachably connected to the rear end of the second inner housing 72, and the front end of the second inner housing 72 is connected to the volute housing 4. The inner housing 7 and the rear housing 6 provide double protection for the motor, and the first inner housing 71 can be removed from the second inner housing 72 to facilitate the maintenance of the internal motor.

[0051] The above is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make several modifications and improvements without departing from the creative concept of the present invention, which should be included in the protection scope of the present invention.

Claims

1. A blower, characterized in that: The invention comprises an adjusting mechanism (1) and an air inlet cover (2), wherein a plurality of air inlet holes (21) are arranged on the air inlet cover (2), the adjusting mechanism (1) comprises a toggle block (12) and a plurality of wind shields (11), wherein the plurality of wind shields (11) are respectively arranged on the rear side of the air inlet cover (2), the toggle block (12) is connected to the plurality of wind shields (11) and the toggle block (12) passes through the air inlet hole (21) to the front side of the air inlet cover (2), and the toggle block (12) rotates in the air inlet hole (21) to drive the plurality of wind shields (11) to change the air inlet area of ​​the air inlet hole (21).

2. A blower according to claim 1, characterized in that: The number of the wind shields (11) is equal to the number of the air inlet holes (21), and the plurality of wind shields (11) are arranged on the same plane.

3. A blower according to claim 2, characterized in that: The plurality of wind shields (11) are connected to the middle of the air inlet cover (2) via a connecting shaft (5); the plurality of air inlet holes (21) are arranged around the connecting shaft (5); and the air inlet area of ​​the air inlet hole (21) can be adjusted when the wind shield (11) rotates around the connecting shaft (5).

4. A blower according to claim 3, characterized in that: The wind shield (11) gradually increases in width from one end to the other end; the narrow sides of the plurality of wind shields (11) are connected via a central plate (13); the wide sides of two adjacent wind shields (11) are connected via a connecting edge (14); a ventilation hole (15) is formed between two adjacent wind shields (11); and the shape and size of the air inlet hole (21) correspond to those of the wind shield (11).

5. A blower according to claim 4, characterized in that: The windshield plate (11) comprises a first arcuate edge (111), a second arcuate edge (112) and a third arcuate edge (113); the curvature of the first arcuate edge (111) is greater than the curvature of the second arcuate edge (112); the first arcuate edge (111) and the second arcuate edge (112) are bent toward the same side; two ends of the third arcuate edge (113) are respectively connected to the first arcuate edge (111) and the second arcuate edge (112); and the third arcuate edge (113) is centered on the connecting axis (5).

6. A blower according to claim 5, characterized in that: The plurality of wind shields (11) are of an integrated structure.

7. A blower according to claim 5, characterized in that: The toggle block (12) is connected to the first arcuate edge (111) or the second arcuate edge (112) of each wind shield (11), and a plurality of the toggle blocks (12) are respectively arranged to pass through a plurality of the air inlet holes (21).

8. The blower according to claim 1, characterized in that: The invention also comprises a volute casing (4), a rear casing (6), a motor (8) and a wind wheel (9), wherein the air inlet cover (2) is detachably connected to the front side of the volute casing (4), the rear casing (6) is detachably connected to the rear side of the volute casing (4), the motor is installed in the rear casing (6) and its output shaft (81) extends into the volute casing (4), and the wind wheel (9) is arranged in the volute casing (4) and connected to the output shaft (81) of the motor; the rear casing (6) comprises a first casing section (61) and a second casing section (62), the first casing section (61) is detachably connected to the rear end of the second casing section (62), and the front end of the second casing section (62) is connected to the volute casing (4).

9. A blower according to claim 8, characterized in that: It also includes a dustproof net (3), which is installed on the front side of the volute casing (4) and arranged on the rear side of the adjustment mechanism (1) and the air inlet cover (2).

10. A blower according to claim 8, characterized in that: An inner shell (7) is arranged in the rear shell (6), the motor (8) is connected to the inner shell (7), the inner shell (7) comprises a first inner shell (71) and a second inner shell (72), the first inner shell (71) and the second inner shell (72) are detachably connected at the rear ends, and the second inner shell (72) is connected at the front end to the volute shell (4).

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