Air regulating door of fan

Abstract

An air regulating door of a fan relates to a fan device, comprises a fan blade frame and a plurality of fan blades, and is characterized in that the fan blades are fan-shaped, outer shafts of the fan blades are arranged on the fan blade frame, inner shafts of the fan blades are arranged on a round core, and the round core is fixed on the fan blade frame through a plurality of supporting rods; an outer shaft of the fan blade is connected with one end of a lever plate, a plate hole is formed in the lever plate, a hole shaft is arranged in the plate hole, the hole shaft can slide in the plate hole, the hole shaft is arranged on a circular ring, and the circular ring is supported by a plurality of supporting wheels; and an operating rod is arranged on the circular ring. The electric fan has the advantages that the operating handle drives the round rod, the round rod enables the fan blades to be twisted through the lever effect to achieve opening and closing, and operation is easy and sensitive.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, and further relates to an air regulating door of a fan, in particular to an air regulating door of a fan used for a drying tower. Background Art

[0002] With the development of rural planting industry, grain harvests have been increasing year by year, so the requirements for grain storage have been increasing day by day, and grain drying has developed rapidly. Drying devices (drying towers, dryers) are essential machines. When it comes to drying devices, fans are involved, and due to the requirements of wind force regulation, air dampers are inevitably involved. Existing air dampers usually use several (such as 3-6) rectangular plates to control the ventilation wind force by rotating the rectangular plates between fully open and fully closed. The air dampers formed by rectangular plates have certain defects, namely, they are laborious and insensitive to operation.

[0003] Based on this, the inventor has devoted himself to the research on solving this practical problem and developed a new type of "a fan air damper", thus solving this problem. Utility Model Content

[0004] The utility model aims to provide a fan air damper, which is easy and sensitive to operate.

[0005] The purpose of the utility model is achieved through the following solutions:

[0006] A fan damper comprises a blade frame and a plurality of blades, wherein the blades are fan-shaped, the outer shaft of the blades is placed on the blade frame, the inner shaft is placed on a circular core, and the circular core is fixed to the blade frame by a plurality of support rods; the outer shaft of the blades is connected to one end of a lever plate, a plate hole is provided on the lever plate, a hole shaft is provided in the plate hole, the hole shaft can slide in the plate hole, the hole shaft is arranged on a circular ring, and the circular ring is supported by a plurality of support wheels; an operating rod is arranged on the circular ring.

[0007] further:

[0008] The supporting wheel comprises: a pulley, an axle, and a bracket, wherein the bracket is arranged on the fan blade frame, the axle is arranged on the bracket, the pulley is arranged on the axle, and the pulley supports the ring.

[0009] The plurality of fan blades are overlapped to form a circle.

[0010] The utility model has the beneficial effects that the operating handle drives the round rod, and the round rod, through the lever effect, causes the fan blades to be turned to realize the switch, and the operation is easy and sensitive.

[0011] In order to enable those skilled in the art to better understand the present invention and to make the above-mentioned purposes, features and advantages of the present invention more obvious and understandable, the present invention is further described in detail below in conjunction with embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the utility model. Figure 2 This is a side structural diagram of the utility model. Figure 3 It is a partial structural schematic diagram of the utility model.

[0013] In the figure: a fan blade frame 1, a support rod 2, a fan blade 3, an outer shaft 4, a lever plate 5, a plate hole 51, a hole shaft 52, an inner shaft 6, a circular ring 7, an operating rod 8, a supporting wheel 9, a pulley 91, a wheel axle 92, a bracket 93, and a circular core 10. DETAILED DESCRIPTION

[0014] like Figure 1 , 2 As shown in Figure 3, a fan damper comprises a fan frame 1 and a plurality of fan blades 3. The fan blades 3 are fan-shaped and are formed into a circle when overlapped. The outer shaft 4 of the fan blade 3 is placed on the fan frame 1, and the inner shaft 6 of the fan blade 3 is placed on the circular core 10. The circular core 10 is fixed to the fan frame 1 by a plurality of support rods 2. The outer shaft 4 of the fan blade 3 is connected to one end of a lever plate 5. A plate hole 51 is provided on the lever plate 5. A hole shaft 52 is provided on the plate hole 51. The hole shaft 52 can slide in the plate hole 51. The hole shaft 52 is provided on a circular ring 7. The circular ring 7 is supported by a plurality of (three in this embodiment) support wheels 9. The support wheel 9 comprises: a pulley 91, an axle 92, and a bracket 93. The bracket 93 is provided on the fan frame 1. The axle 92 is provided on the bracket 93. The axle 92 is provided on the pulley 91. The pulley 91 supports the circular ring 7.

[0015] An operating lever 8 is provided on the ring 7. By operating the operating lever 8, the ring 7 can be rotated. The rotation of the ring 7 drives the hole shaft 52. The hole shaft 52 moves in the plate hole 51, which drives the outer shaft 4 and the fan blades 3 to rotate, thereby achieving wind adjustment.

[0016] The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A fan damper, comprising a fan blade frame and a plurality of fan blades, characterized in that: The fan blade is fan-shaped, with the outer axis of the fan blade placed on the fan blade frame and the inner axis placed on the circular core, which is fixed to the fan blade frame by a number of support rods; the outer axis of the fan blade is connected to one end of a lever plate, a plate hole is provided on the lever plate, a hole shaft is provided in the plate hole, the hole shaft can slide in the plate hole, the hole shaft is arranged on a circular ring, and the circular ring is supported by a number of support wheels; an operating rod is provided on the circular ring.

2. The air damper of a fan according to claim 1, characterized in that: The supporting wheel comprises: a pulley, an axle, and a bracket, wherein the bracket is arranged on the fan blade frame, the axle is arranged on the bracket, the pulley is arranged on the axle, and the pulley supports the ring.

3. The air damper of a fan according to claim 1, characterized in that: The plurality of fan blades are overlapped to form a circle.

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