Integrated base of centrifugal fan

Abstract

The utility model discloses an integrated base of a centrifugal fan. An impeller shell is fixed to one end of a main base body, and a bearing box base body, a coupling supporting base body and a motor base body are sequentially arranged in a straight line and fixedly connected to the upper surface of the main base body. An arc-shaped groove is formed in the surface of the bearing box seat body, and bearing box mounting plates are integrally connected to the two sides of the arc-shaped groove of the bearing box seat body; the surface of the motor base body is also provided with an arc-shaped groove, and the two sides of the arc-shaped groove of the motor base body are integrally connected with motor mounting plates. According to the integrated machine base of the centrifugal fan, the structure is stable and reliable, the impeller shell and the base bodies of all the parts are integrated on the main base body, the modular characteristic is achieved, installation of all the parts of the coupling type centrifugal fan is facilitated, the assembly process of all the parts is simplified, and the assembly efficiency is improved. And a modularized standard can be provided for the assembly positions of all parts of the coupling type centrifugal fan.

Description

Technical Field

[0001] The utility model belongs to the field of fan equipment, and in particular relates to an integrated machine base of a centrifugal fan. Background Art

[0002] Centrifugal fans are machines that rely on input mechanical energy to increase gas pressure and discharge gas. They are driven fluid machines. 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 of air conditioning equipment and household appliances, drying and selection of grains, wind tunnel wind sources and inflation and propulsion of hovercraft, etc.

[0003] Existing centrifugal fans can be divided into pulley type and coupling type. The present application relates to a coupling type centrifugal fan. The coupling type centrifugal fan is a device with a relatively complex structure, which is assembled from components such as an impeller, a main shaft, a bearing box, a coupling and a drive motor. Before the present utility model was made, the existing coupling type centrifugal fans were cumbersome to assemble, and whether the installation positions of each component were standardized directly affected the operating effect of the fan. Utility Model Content

[0004] Based on the content in the background technology, the utility model provides an integrated machine base of a centrifugal fan, which can facilitate the installation of various components of a coupling-type centrifugal fan and can also provide a modular standard for the installation position of each component.

[0005] An integrated machine base of a centrifugal fan, comprising an impeller housing, a main base, a bearing box base, a coupling support base and a motor base; the impeller housing is fixed to one end of the main base, the bearing box base, the coupling support base and the motor base are sequentially arranged in a straight line and are respectively fixedly connected to the upper surface of the main base;

[0006] The surface of the bearing box seat is provided with an arc-shaped groove, and the bearing box seat is integrally connected with bearing box mounting plates on both sides of the arc-shaped groove, so that the bearing box of the fan impeller can be adaptably installed on the bearing box seat and fastened to the bearing box mounting plate by fasteners; the surface of the motor seat is also provided with an arc-shaped groove, and the motor seat is integrally connected with motor mounting plates on both sides of the arc-shaped groove, so that the driving motor of the fan can be adaptably installed on the motor seat and fastened to the motor mounting plate by fasteners.

[0007] Furthermore, the coupling support seat body includes a first connecting sleeve, a second connecting sleeve, a flange, a bearing seat and a shaft bushing; the first connecting sleeve and the second connecting sleeve are respectively provided with at least one pin hole on the side, and corresponding pin holes are also provided on the rotating shaft of the fan impeller and the output shaft of the motor, so that the rotating shaft of the impeller can be fastened and connected to the first connecting sleeve and the output shaft of the motor can be fastened and connected to the second connecting sleeve through high-strength pins, respectively, the first connecting sleeve and the second connecting sleeve are arranged opposite to each other, and the first connecting sleeve and the second connecting sleeve are respectively fixedly provided with flanges at opposite ends, and the two flanges are connected by fasteners, and the fasteners are specifically high-strength bolts and anti-loosening nuts;

[0008] There are two bearing seats in total, which are arranged on both sides of the first connecting sleeve and the second connecting sleeve. The other ends of the first connecting sleeve and the second connecting sleeve are respectively fixedly connected with shaft bushings, which are arranged in the bearing holes of the corresponding bearing seats. A bearing is arranged between the shaft bushings and the corresponding bearing holes. The bearing is specifically a cylindrical roller bearing, which can withstand a large radial load and is suitable for high-speed rotation.

[0009] The bearing seat is provided with a retaining ring at the outer edge of the bearing hole. The retaining ring is fixedly connected to the side of the bearing seat by bolts. The retaining ring can limit the bearing in the bearing hole to prevent it from falling off from the bearing hole during operation.

[0010] The first connecting sleeve is used to connect the rotating shaft of the fan impeller, and the second connecting sleeve is used to connect the output shaft of the motor. When the coupled centrifugal fan is running at high speed, the first connecting sleeve and the second connecting sleeve are well supported due to the matching connection design of their respective shaft bushings and corresponding bearing seats, and they will not shake easily during high-speed operation, thereby reducing the failure rate of the coupled centrifugal fan at its coupling.

[0011] Furthermore, an air outlet is provided at the top of the impeller housing, an air inlet is provided on the outer side of the impeller housing, and an axis opening is provided on the inner side of the impeller housing. A bearing sleeve is provided at the axis opening, and a bearing is provided in the bearing sleeve. In this way, when the impeller of the fan is set in the impeller housing, the rotating shaft of the impeller can pass through the bearing sleeve, so that the rotating shaft of the impeller can run smoothly.

[0012] Furthermore, the main seat body is trapezoidal, and multiple shock absorbers are connected to both sides of the bottom of the main seat body. The shock absorber is the existing technology, and is equipped with a shock-absorbing spring and a damper. Its structure is not repeated here, and it can reduce the vibration of the main seat body when the centrifugal fan is running.

[0013] Through the above technical solution, the utility model at least includes the following beneficial effects:

[0014] The integrated base of the centrifugal fan described in the present application has a stable and reliable structure, and the impeller casing and the base bodies of various components are integrated on the main base body. It has modular characteristics, which not only facilitates the installation of various components of the coupled centrifugal fan and simplifies the assembly process of various components, but also can provide modular standards for the assembly positions of various components of the coupled centrifugal fan.

[0015] In a further solution, the first connecting sleeve and the second connecting sleeve of the coupling support seat body are designed to be connected with the corresponding bearing seat through their respective shaft bushings, so that the first connecting sleeve and the second connecting sleeve can be well supported and will not shake easily during high-speed operation, thereby reducing the failure rate of the coupling centrifugal fan at its coupling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the integrated base of the centrifugal fan described in the implementation manner of the present application;

[0017] Figure 2 It is a schematic diagram of the overall structure of the integrated base of the centrifugal fan described in the embodiment of the present application from another perspective;

[0018] Figure 3 for Figure 1 The enlarged view of point A in the middle;

[0019] Figure 4 This is a schematic diagram of the structure of the first connecting sleeve, the second connecting sleeve and the shaft bushing in the embodiment of the present application; DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the structures related to the present invention.

[0021] In the description of this application, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship are only used for exemplary description and cannot be understood as limiting this patent; if there are terms such as "first", "second", etc., they are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the said features. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0022] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0023] refer to Figures 1 to 4 An integrated machine base of a centrifugal fan, comprising an impeller housing 1, a main base body 2, a bearing box base body 3, a coupling support base body 4 and a motor base body 5;

[0024] The impeller housing 1 is fixed to one end of the main seat body 2, and the bearing box seat body 3, the coupling support seat body 4 and the motor seat body 5 are arranged in a straight line and are respectively fixedly connected to the upper surface of the main seat body 2;

[0025] An arc-shaped groove is provided on the surface of the bearing box seat body 3, and the bearing box seat body 3 is integrally connected with bearing box mounting plates 31 on both sides of the arc-shaped groove, so that the bearing box of the fan impeller can be adaptively installed on the bearing box seat body 3, and is fastened to the bearing box mounting plates 31 by fasteners; an arc-shaped groove is also provided on the surface of the motor seat body 5, and the motor seat body 5 is integrally connected with motor mounting plates 51 on both sides of the arc-shaped groove, so that the driving motor of the fan can be adaptively installed on the motor seat body 5, and is fastened to the motor mounting plates 51 by fasteners.

[0026] refer to Figure 3 and Figure 4 The coupling support seat body 4 includes a first connecting sleeve 41, a second connecting sleeve 42, a flange 43, a bearing seat 44 and a shaft bushing 45; the first connecting sleeve 41 and the second connecting sleeve 42 are respectively provided with at least one pin hole 47 on their sides, and corresponding pin holes 47 are also provided on the rotating shaft of the fan impeller and the output shaft of the motor, so that the rotating shaft of the impeller can be fastened to the first connecting sleeve 41 and the output shaft of the motor can be fastened to the second connecting sleeve 42 through high-strength pins, respectively. The first connecting sleeve 41 and the second connecting sleeve 42 are arranged opposite to each other, and the opposite ends of the first connecting sleeve 41 and the second connecting sleeve 42 are respectively fixedly provided with flanges 43, and the two flanges 43 are connected by fasteners, which are specifically high-strength bolts and anti-loosening nuts;

[0027] There are two bearing seats 44 arranged on both sides of the first connecting sleeve 41 and the second connecting sleeve 42. The other ends of the first connecting sleeve 41 and the second connecting sleeve 42 are respectively fixedly connected with shaft bushings 45. The shaft bushings 45 are arranged in the bearing holes of the corresponding bearing seats 44. A bearing is arranged between the shaft bushings 45 and the corresponding bearing holes. The bearing is specifically a cylindrical roller bearing 48, which can withstand a large radial load and is suitable for high-speed rotation.

[0028] The bearing seat 44 is provided with a retaining ring 46 at the outer edge of the bearing hole. The retaining ring 46 is fixedly connected to the side of the bearing seat 44 by bolts. The retaining ring 46 can limit the bearing in the bearing hole to prevent it from falling out of the bearing hole during operation.

[0029] The first connecting sleeve 41 is used to connect the rotating shaft of the fan impeller, and the second connecting sleeve 42 is used to connect the output shaft of the motor. When the coupled centrifugal fan is running at high speed, the first connecting sleeve 41 and the second connecting sleeve 42 are well supported due to the matching connection design of their respective shaft bushings 45 and the corresponding bearing seats 44, and they will not shake easily during high-speed operation, thereby reducing the failure rate of the coupled centrifugal fan at its coupling.

[0030] refer to Figure 1 and Figure 2 The top of the impeller housing 1 is provided with an air outlet 11, the outer side of the impeller housing 1 is provided with an air inlet 12, the inner side of the impeller housing 1 is provided with an axis opening, a bearing sleeve 13 is provided at the axis opening, and a bearing is provided in the bearing sleeve 13, so that when the impeller of the fan is set in the impeller housing 1, the impeller shaft can pass through the bearing sleeve 13, so that the impeller shaft can run smoothly. The main seat body 2 is trapezoidal, and a plurality of shock absorbers 6 are connected to both sides of the bottom of the main seat body 2. The shock absorber 6 is a prior art, and a shock absorbing spring and a damper are provided therein. Its structure is not repeated here, and it can reduce the vibration of the main seat body 2 when the centrifugal fan is running.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Based on the present invention and the above description, relevant personnel can make various changes and modifications without departing from the technical idea of ​​the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated base of a centrifugal fan, characterized in that: It comprises an impeller housing (1), a main seat body (2), a bearing box seat body (3), a coupling support seat body (4) and a motor seat body (5); The impeller housing (1) is fixed to one end of the main seat body (2), and the bearing box seat body (3), the coupling support seat body (4) and the motor seat body (5) are sequentially arranged in a straight line and are respectively fixedly connected to the upper surface of the main seat body (2); The surface of the bearing box seat (3) is provided with an arc-shaped groove, and the bearing box seat (3) is integrally connected with a bearing box mounting plate (31) on both sides of the arc-shaped groove; the surface of the motor seat (5) is also provided with an arc-shaped groove, and the motor seat (5) is integrally connected with a motor mounting plate (51) on both sides of the arc-shaped groove.

2. The integrated base of a centrifugal fan according to claim 1, characterized in that: The coupling support seat body (4) comprises a first connecting sleeve (41), a second connecting sleeve (42), a flange (43), a bearing seat (44) and a shaft bushing (45); the side surfaces of the first connecting sleeve (41) and the second connecting sleeve (42) are respectively provided with at least one pin hole (47); the first connecting sleeve (41) and the second connecting sleeve (42) are arranged opposite to each other; the first connecting sleeve (41) and the second connecting sleeve (42) are respectively fixedly provided with flanges (43) at opposite ends; and the two flanges (43) are connected by fasteners; There are two bearing seats (44) respectively arranged on both sides of the first connecting sleeve (41) and the second connecting sleeve (42); the other ends of the first connecting sleeve (41) and the second connecting sleeve (42) are respectively fixedly connected with shaft bushings (45); the shaft bushings (45) are arranged in the bearing holes of the corresponding bearing seats (44); and bearings are arranged between the shaft bushings (45) and the corresponding bearing holes.

3. The integrated base of a centrifugal fan according to claim 2, characterized in that: The bearing seat (44) is provided with a retaining ring (46) at the outer edge of the bearing hole, and the retaining ring (46) is fixedly connected to the side surface of the bearing seat (44) by bolts.

4. The integrated base of a centrifugal fan according to claim 1 or 2, characterized in that: The top of the impeller housing (1) is provided with an air outlet (11), the outer side of the impeller housing (1) is provided with an air inlet (12), the inner side of the impeller housing (1) is provided with an axis opening, and a bearing sleeve (13) is provided at the axis opening.

5. The integrated base of a centrifugal fan according to claim 1 or 2, characterized in that: The main seat body (2) is trapezoidal in shape, and a plurality of shock absorbers (6) are connected to both sides of the bottom of the main seat body (2).

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