Centrifugal fan shaft

Abstract

The utility model discloses a centrifugal fan shaft which comprises a fan mandrel and an adjusting balance hub, the adjusting balance hub is connected to the fan mandrel in a sleeved mode, the fan mandrel is provided with a motor main shaft insertion hole, and the motor main shaft insertion hole is provided with a main shaft locking key groove. The adjusting balance hub comprises a first connecting piece, a second connecting piece, a third connecting piece, a fourth connecting piece, a fifth connecting piece, a sixth connecting piece and an outer ring hub. According to the centrifugal fan shaft disclosed by the utility model, the fan mandrel and the balance adjusting hub are linked, so that the impeller and the machine shaft are split, when the machine shaft or the impeller goes wrong, the machine shaft or the impeller does not need to be integrally replaced, only the damaged part needs to be replaced, and the fan is more stable in operation and reduced in vibration by adjusting the balance hub, so that the service life of the fan shaft is prolonged. And the balance adjusting effect is achieved.

Description

Technical Field

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

[0002] Centrifugal fans and blowers are commonly seen in factories. These fans use impellers for suction or blowing, and the impellers are often sheet metal parts with an integral structure, which is not convenient for disassembly. In addition, the center of the impeller hub is usually prone to breakage and damage, and the entire impeller needs to be replaced during disassembly, which is very costly.

[0003] Therefore, further improvements are made to the above problems. Utility Model Content

[0004] The main purpose of the utility model is to provide a centrifugal fan shaft, which is linked by the fan core shaft and the adjustable balancing hub, so that the impeller and the machine shaft are separated. When the machine shaft or impeller has a problem, it does not need to be replaced as a whole, but only the damaged part needs to be replaced. In addition, by adjusting the balancing hub, the fan can run more smoothly, reduce vibration, and play a balancing and regulating role.

[0005] In order to achieve the above purpose, the utility model provides a centrifugal fan shaft, including a fan spindle and an adjusting balancing hub, wherein the adjusting balancing hub is sleeved on the fan spindle, wherein:

[0006] The fan spindle is provided with a motor spindle insertion hole and the motor spindle insertion hole is provided with a locking spindle keyway;

[0007] The adjusting balancing hub comprises a first connecting member, a second connecting member, a third connecting member, a fourth connecting member, a fifth connecting member, a sixth connecting member and an outer ring hub, and the outer ring hub is installed on the outer periphery of the fan shaft through the first connecting member, the second connecting member, the third connecting member, the fourth connecting member, the fifth connecting member and the sixth connecting member; the outer ring hub is provided with a first impeller connecting hole, a second impeller connecting hole, a third impeller connecting hole, a fourth impeller connecting hole, a fifth impeller connecting hole and a sixth impeller connecting hole; a first drainage groove is provided between the first connecting member and the second connecting member, a second drainage groove is provided between the second connecting member and the third connecting member, a third drainage groove is provided between the third connecting member and the fourth connecting member, a fourth drainage groove is provided between the fourth connecting member and the fifth connecting member, a fifth drainage groove is provided between the fifth connecting member and the sixth connecting member, and a sixth drainage groove is provided between the sixth connecting member and the first connecting member.

[0008] As a further preferred technical solution of the above technical solution, the outer cylindrical surface of the fan shaft is provided with a taper.

[0009] As a further preferred technical solution of the above technical solution, the first impeller connecting hole is installed with a first fixing screw and a first fixing nut, the second impeller connecting hole is installed with a second fixing screw and a second fixing nut, the third impeller connecting hole is installed with a third fixing screw and a third fixing nut, the fourth impeller connecting hole is installed with a fourth fixing screw and a fourth fixing nut, the fifth impeller connecting hole is installed with a fifth fixing screw and a fifth fixing nut, and the sixth impeller connecting hole is installed with a sixth fixing screw and a sixth fixing nut.

[0010] As a further preferred technical solution of the above technical solution, the adjusting balancing hub is connected to the fan impeller through the first impeller connecting hole, the second impeller connecting hole, the third impeller connecting hole, the fourth impeller connecting hole, the fifth impeller connecting hole and the sixth impeller connecting hole.

[0011] As a further preferred technical solution of the above technical solution, the motor spindle insertion hole is used for inserting the motor spindle. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a structural schematic diagram of a centrifugal fan shaft.

[0013] Figure 2 The utility model is a structural schematic diagram of a centrifugal fan shaft.

[0014] Figure 3 The utility model is a schematic diagram of the installation of a centrifugal fan shaft.

[0015] The reference numerals include: 100, fan shaft; 110, motor shaft insertion hole; 120, locking shaft keyway; 200, adjusting balance hub; 210, first connecting piece; 211, first drainage groove; 220, second connecting piece; 221, second drainage groove; 230, third connecting piece; 231, third drainage groove; 240, fourth connecting piece; 241, fourth drainage groove; 250, fifth connecting piece; 251, fifth drainage groove; 260, sixth connecting piece; 261, sixth drainage groove; 270, outer ring hub; 271, first impeller connecting hole; 272, second impeller connecting hole; 273, third impeller connecting hole; 274, fourth impeller connecting hole; 275, fifth impeller connecting hole; 276, sixth impeller connecting hole; 300, fan impeller. DETAILED DESCRIPTION

[0016] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0017] The utility model discloses a centrifugal fan shaft. The specific embodiments of the utility model are further described below in conjunction with preferred embodiments.

[0018] In the embodiments of the present invention, those skilled in the art will note that the motor spindle and fan impeller involved in the present invention may be regarded as prior art.

[0019] Preferred embodiments.

[0020] like Figure 1-3 As shown, the utility model discloses a centrifugal fan shaft, including a fan spindle 100 and an adjusting balancing hub 200, wherein the adjusting balancing hub 200 is sleeved on the fan spindle 100, wherein:

[0021] The fan spindle 100 is provided with a motor spindle insertion hole 110 and the motor spindle insertion hole 110 is provided with a locking spindle keyway 120;

[0022] The adjusting and balancing hub 200 includes a first connecting member 210, a second connecting member 220, a third connecting member 230, a fourth connecting member 240, a fifth connecting member 250, a sixth connecting member 260 and an outer ring hub 270 (the first to sixth connecting members are used as reinforcing rib structures to increase structural strength). The outer ring hub 270 is installed on the outer periphery of the fan shaft 100 through the first connecting member 210, the second connecting member 220, the third connecting member 230, the fourth connecting member 240, the fifth connecting member 250 and the sixth connecting member 260; the outer ring hub 270 is provided with a first impeller connecting hole 271, a second impeller connecting hole 272, a third impeller connecting hole 273, a fourth impeller connecting hole 274, a fifth impeller connecting hole 275, a sixth impeller connecting hole 276, a fifth impeller connecting hole 277, a sixth impeller connecting hole 278, a fifth impeller connecting hole 279, a fifth impeller connecting hole 280, a fifth impeller connecting hole 281, a fifth impeller connecting hole 282, a fifth impeller connecting hole 283, a fifth impeller connecting hole 284, a fifth impeller connecting hole 285, a fifth impeller connecting hole 286, a fifth impeller connecting hole 287, a fifth impeller connecting hole 288, a fifth impeller connecting hole 289, a fifth impeller connecting hole 290, a fifth impeller connecting hole 301, a fifth impeller connecting hole 302, a fifth impeller connecting hole 303, a fifth impeller connecting hole 304, a fifth impeller connecting hole 305, a fifth impeller connecting hole 306, a fifth impeller connecting hole 307, a fifth impeller connecting hole 308, a fifth impeller connecting hole 309, a fifth impeller connecting hole 3 A fourth impeller connecting hole 274, a fifth impeller connecting hole 275 and a sixth impeller connecting hole 276; a first drainage groove 211 is provided between the first connecting member 210 and the second connecting member 220, a second drainage groove 221 is provided between the second connecting member 220 and the third connecting member 230, a third drainage groove 231 is provided between the third connecting member 230 and the fourth connecting member 240, a fourth drainage groove 241 is provided between the fourth connecting member 240 and the fifth connecting member 250, a fifth drainage groove 251 is provided between the fifth connecting member 250 and the sixth connecting member 260, and a sixth drainage groove 261 is provided between the sixth connecting member 260 and the first connecting member 210.

[0023] Specifically, the outer cylindrical surface of the fan shaft 100 is provided with a taper.

[0024] More specifically, the first impeller connecting hole 271 is installed with a first fixing screw and a first fixing nut, the second impeller connecting hole 272 is installed with a second fixing screw and a second fixing nut, the third impeller connecting hole 273 is installed with a third fixing screw and a third fixing nut, the fourth impeller connecting hole 274 is installed with a fourth fixing screw and a fourth fixing nut, the fifth impeller connecting hole 275 is installed with a fifth fixing screw and a fifth fixing nut, and the sixth impeller connecting hole 276 is installed with a sixth fixing screw and a sixth fixing nut.

[0025] Furthermore, the adjusting balancing hub 200 is connected to the fan impeller 300 through the first impeller connecting hole 271, the second impeller connecting hole 272, the third impeller connecting hole 273, the fourth impeller connecting hole 274, the fifth impeller connecting hole 275 and the sixth impeller connecting hole 276.

[0026] Furthermore, the motor spindle insertion hole 110 is used to insert the motor spindle.

[0027] For this utility model:

[0028] The centrifugal impeller is composed of a fan impeller and a centrifugal fan shaft. The utility model separates the fan impeller and the centrifugal fan shaft (originally many centrifugal impellers were a whole) by designing a separate centrifugal fan shaft, inserts the centrifugal fan shaft from the center hole inside the fan impeller, and aligns the 6 impeller connecting holes on the periphery, then inserts the fixing screw from the outer end face of the impeller, and then screws the fixing nut into the inner end face of the impeller and tightens it.

[0029] For centrifugal fan shafts

[0030] 1. In order to ensure smoother operation, a thickened adjustment balance hub is designed on the shaft, which plays the role of a flywheel, so that the impeller will not change from time to time due to unstable airflow during operation. With the effect of inertia, the operation is more stable.

[0031] 2. There are 6 drainage grooves on the circumference of the adjusting balance wheel hub, so that the wind sucked in from the air inlet can be accelerated by the rotation of the drainage grooves, and then decelerated and changed in direction.

[0032] 3. The outer cylindrical surface of the fan shaft is tapered, which is convenient for matching with the tapered surface of the pulley, allowing the pulleys to be connected together by the tapered surface.

[0033] 4. The motor spindle insertion hole on the fan spindle can be used to connect with the motor spindle, and there is a locking spindle keyway on the side to ensure a secure connection.

[0034] It is worth mentioning that the technical features such as the motor main shaft and fan impeller involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected by conventional methods in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not be further elaborated.

[0035] For those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A centrifugal fan shaft, characterized in that: It includes a fan shaft and an adjusting balancing hub, wherein the adjusting balancing hub is sleeved on the fan shaft, wherein: The fan spindle is provided with a motor spindle insertion hole and the motor spindle insertion hole is provided with a locking spindle keyway; The adjusting balancing hub comprises a first connecting member, a second connecting member, a third connecting member, a fourth connecting member, a fifth connecting member, a sixth connecting member and an outer ring hub, and the outer ring hub is installed on the outer periphery of the fan shaft through the first connecting member, the second connecting member, the third connecting member, the fourth connecting member, the fifth connecting member and the sixth connecting member; the outer ring hub is provided with a first impeller connecting hole, a second impeller connecting hole, a third impeller connecting hole, a fourth impeller connecting hole, a fifth impeller connecting hole and a sixth impeller connecting hole; a first drainage groove is provided between the first connecting member and the second connecting member, a second drainage groove is provided between the second connecting member and the third connecting member, a third drainage groove is provided between the third connecting member and the fourth connecting member, a fourth drainage groove is provided between the fourth connecting member and the fifth connecting member, a fifth drainage groove is provided between the fifth connecting member and the sixth connecting member, and a sixth drainage groove is provided between the sixth connecting member and the first connecting member.

2. A centrifugal fan shaft according to claim 1, characterized in that: The outer cylindrical surface of the fan shaft is provided with a taper.

3. A centrifugal fan shaft according to claim 2, characterized in that: The first impeller connecting hole is installed with a first fixing screw and a first fixing nut, the second impeller connecting hole is installed with a second fixing screw and a second fixing nut, the third impeller connecting hole is installed with a third fixing screw and a third fixing nut, the fourth impeller connecting hole is installed with a fourth fixing screw and a fourth fixing nut, the fifth impeller connecting hole is installed with a fifth fixing screw and a fifth fixing nut, and the sixth impeller connecting hole is installed with a sixth fixing screw and a sixth fixing nut.

4. A centrifugal fan shaft according to claim 3, characterized in that: The adjusting balancing hub is connected to the fan impeller through the first impeller connecting hole, the second impeller connecting hole, the third impeller connecting hole, the fourth impeller connecting hole, the fifth impeller connecting hole and the sixth impeller connecting hole.

5. A centrifugal fan shaft according to claim 4, characterized in that: The motor main shaft insertion hole is used for inserting the motor main shaft.

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