A fan with stainless steel side panels

Abstract

The utility model relates to fan technical field especially relates to a fan of stainless steel side plate, including the casing, sets up the stainless steel side plate at the casing end, the side plate has seted up the mounting hole, the stainless steel side plate is inserted with the bushing in the mounting hole, the stainless steel side plate and the bushing combination form the wallboard, the wallboard has seted up the bearing hole at the bushing position, the thermal expansion coefficient of bushing is less than the thermal expansion coefficient of the stainless steel side plate. The utility model has installed the bushing in the mounting hole of stainless steel side plate, installs the bearing in the bushing, effectively solved the problem existing in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and in particular to a fan with a stainless steel side plate. Background Technology

[0002] In general pneumatic conveying and water treatment industries, Roots blowers transport air as the gas medium. Gray cast iron is sufficient to meet the performance requirements for the main flow-through components such as the casing, side plates, and impeller. However, in some near-shore marine humid environments or applications with special user requirements, stainless steel flow-through components are typically selected.

[0003] The rotor of a Roots blower is supported and positioned on both sides by bearings, which are installed in bearing housings on the side plates. These side plates are typically made of gray cast iron, and the bearings and bearing housings have a transition fit. If the side plates are made of stainless steel, such as... Figure 1 As shown, during the operation of a Roots blower, the bearing housing will heat up and deform. Due to the large coefficient of thermal expansion of stainless steel, the bearing is prone to loosening and displacement under high temperature conditions.

[0004] Based on the aforementioned problems, this application proposes a fan with stainless steel side plates to solve the problems existing in the prior art. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a fan with a stainless steel side plate. By installing a bushing in the mounting hole of the stainless steel side plate and installing the bearing in the bushing, the problems existing in the prior art are effectively solved.

[0006] To address the aforementioned issues, this utility model provides a fan with a stainless steel side plate, comprising a housing and a stainless steel side plate disposed at the end of the housing. The side plate has an installation hole, and a bushing is interference-fitted into the installation hole. The stainless steel side plate and the bushing are combined to form a wall panel. A bearing hole is provided in the wall panel at the bushing position. The coefficient of thermal expansion of the bushing is less than that of the stainless steel side plate.

[0007] Furthermore, the bushing is configured as a gray cast iron bushing.

[0008] Furthermore, the mounting hole includes a first hole segment and a second hole segment disposed outside the first hole segment; the interference fit between the bushing and the first hole segment is greater than the interference fit between the bushing and the second hole segment.

[0009] Furthermore, the diameter of the second hole section is larger than that of the first hole section; the fan also includes a bolt, which passes through a portion of the bushing in the second hole section and is then fixed to the stainless steel side plate.

[0010] Furthermore, the stainless steel side plate has a plurality of structural holes spaced apart circumferentially in the first hole section.

[0011] Furthermore, the bushing is formed with a wedge that extends into the structural hole.

[0012] Furthermore, the structural hole forms a heat dissipation cavity in the portion outside the wedge, the bushing has a first heat dissipation hole communicating with the heat dissipation cavity, and the stainless steel side plate has a second heat dissipation hole communicating with the heat dissipation cavity.

[0013] Furthermore, the cross-sectional width of the structural hole gradually decreases from the inside to the outside.

[0014] The beneficial effect of this utility model is that by installing a bushing in the mounting hole of the stainless steel side plate and installing the bearing in the bushing, the problems existing in the prior art are effectively solved. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structure of an existing type of fan with stainless steel side plates.

[0017] Figure 2 This is a schematic diagram of the wall panel of a fan according to an embodiment of the present invention.

[0018] Figure 3 for Figure 2 A schematic diagram of a partial cross-sectional view along the AA direction.

[0019] Figure 4 Figure 2 The wall panel of the illustrated embodiment is in Figure 3 The diagram shows a side view of the structure.

[0020] The components are: 1. Housing; 2. Stainless steel side plate; 3. Mounting hole; 301. First hole section; 302. Second hole section; 4. Bushing; 5. Bearing hole; 6. Bolt; 7. Structural hole; 8. Wedge; 9. First heat dissipation hole; 10. Second heat dissipation hole; 11. Bearing. Detailed Implementation

[0021] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0022] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0023] Furthermore, it should be understood in the description of this utility model that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected by an intermediate structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0025] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] In this utility model, such as Figure 2-4As shown, a fan with a stainless steel side plate 2 is provided, including a housing 1 and a stainless steel side plate 2 disposed at the end of the housing 1. The side plate has a mounting hole 3. A bushing 4 is interference-fitted into the mounting hole 3 of the stainless steel side plate 2. The stainless steel side plate 2 and the bushing 4 are combined to form a wall panel. The wall panel has a bearing hole 5 at the bushing 4. The coefficient of thermal expansion of the bushing 4 is less than that of the stainless steel side plate 2.

[0027] As shown in the figure, the fan of this utility model can be assembled by heat fitting the bushing 4 into the stainless steel side plate 2, so that the bushing 4 and the stainless steel side plate 2 are integrated into a wall panel. Then, the bearing hole 5 is precision machined on the wall panel according to the main shaft of the housing 1, and the bearing 11 is installed in the bearing hole 5 with transition fit to complete the installation.

[0028] During use after assembly, when the wall panel is heated, the bushing 4 has a smaller coefficient of thermal expansion, which makes it less likely for the bushing 4 and bearing 11 to loosen or shift, allowing the bearing 11 to be installed more stably within the bushing 4. Since the bushing 4 is heat-fitted to the stainless steel side plate 2, the bushing 4 and the stainless steel side plate 2 are less prone to relative deformation when heated, further improving the installation stability of the bushing 4.

[0029] Therefore, compared with the method of directly mounting the bearing 11 on the stainless steel side plate 2, this utility model can stably mount the bearing 11 and effectively solve the problems in the prior art.

[0030] In a preferred embodiment, specifically regarding the structure of this utility model, the bushing 4 is configured as a gray cast iron bushing 4.

[0031] In a preferred embodiment, more specifically regarding the structure of this utility model, the mounting hole 3 includes a first hole segment 301 and a second hole segment 302 disposed outside the first hole segment 301; the interference fit between the bushing 4 and the first hole segment 301 is greater than the interference fit between the bushing 4 and the second hole segment.

[0032] As shown in the figure, by dividing the mounting hole 3 into two segments, the insertion depth of the bushing 4 and the stainless steel side plate 2 with large interference can be reduced, thereby reducing the assembly difficulty.

[0033] In a preferred embodiment, more specifically regarding the structure of this utility model, the diameter of the second hole section 302 is larger than the diameter of the first hole section 301; the fan also includes a bolt 6, which passes through the bushing 4 in the second hole section and is then fixed to the stainless steel side plate 2.

[0034] As shown in the figure, the connection between the bushing 4 and the stainless steel side plate 2 can be reinforced by using bolts 6 to prevent the bushing 4 from loosening and falling off.

[0035] In a preferred embodiment, more specifically regarding the structure of this utility model, the stainless steel side plate 2 has a plurality of structural holes 7 spaced circumferentially along the portion of the first hole segment 301.

[0036] As shown in the figure, by setting structural holes 7 in the hole wall of the first hole section 301, the thermal expansion deformation capacity of the stainless steel side plate 2 at the edge of the first hole section 301 can be further increased. Therefore, when the bushing 4 is installed on the stainless steel side plate 2, compared with the first hole section 301 using a round hole, the interference between the bushing 4 and the first hole section 301 can be increased, thereby further increasing the installation stability of the bushing 4.

[0037] In a preferred embodiment, more specifically regarding the structure of this utility model, the bushing 4 is formed with a wedge 8 extending into the structural hole 7.

[0038] As shown in the figure, by setting the wedge 8, the contact area of ​​the bushing 4 in the first hole section 301 can be increased, and the wedge 8 can generate a circumferential contact force in the first hole section at the contact position with the hole wall of the structural hole 7, so as to further improve the installation stability of the bushing 4 on the stainless steel side plate 2.

[0039] In a preferred embodiment, more specifically regarding the structure of this utility model, the structural hole 7 forms a heat dissipation cavity in the portion outside the wedge block 8, the bushing 4 forms a first heat dissipation hole 9 communicating with the heat dissipation cavity, and the stainless steel side plate 2 is provided with a second heat dissipation hole 10 communicating with the heat dissipation cavity.

[0040] As shown in the figure, the heat dissipation holes can be used to ventilate or liquid cool the contact area between the bushing 4 and the stainless steel, so as to further prevent the bushing 4 from loosening and shifting due to excessive heat deformation of the stainless steel side plate 2.

[0041] In the illustrated embodiment, as Figure 4 As shown, the second heat dissipation hole 10 extends from the bottom wall of the structural hole 7 and then from the side wall of the stainless steel side plate 2 to the outside, so that the first heat dissipation hole 9 forms a heat dissipation passage from the outer end face of the wall plate, the heat dissipation cavity, and the second heat dissipation hole 10 from the side of the stainless steel side plate 2, so that the first heat dissipation hole 9 and the second heat dissipation hole 10 can be connected to the external cooling air duct or cooling medium for cooling.

[0042] In a preferred embodiment, more specifically, regarding the structure of this utility model, the cross-sectional width of the structural hole 7 gradually decreases from the inside to the outside.

[0043] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0044] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A fan with stainless steel side plates, characterized in that, The device includes a housing and a stainless steel side plate disposed at the end of the housing. The side plate has a mounting hole, and a bushing is interference-fitted into the mounting hole. The stainless steel side plate and the bushing are combined to form a wall panel. The wall panel has a bearing hole at the bushing position. The coefficient of thermal expansion of the bushing is less than that of the stainless steel side plate.

2. The fan with a stainless steel side plate according to claim 1, characterized in that, The bushing is made of gray cast iron.

3. The fan with a stainless steel side plate according to claim 1, characterized in that, The mounting hole includes a first hole section and a second hole section disposed outside the first hole section; The interference fit between the bushing and the first bore is greater than the interference fit between the bushing and the second bore.

4. The fan with a stainless steel side plate according to claim 3, characterized in that, The diameter of the second hole segment is larger than the diameter of the first hole segment; The fan also includes bolts that pass through a portion of the bushing in the second hole and are secured to the stainless steel side plate.

5. A fan with a stainless steel side plate according to claim 4, characterized in that, The stainless steel side plate has multiple structural holes spaced circumferentially in the first hole section.

6. A fan with a stainless steel side plate according to claim 5, characterized in that, The bushing is formed with a wedge that extends into the structural hole.

7. A fan with a stainless steel side plate according to claim 6, characterized in that, The structural hole forms a heat dissipation cavity in the portion outside the wedge, the bushing has a first heat dissipation hole communicating with the heat dissipation cavity, and the stainless steel side plate has a second heat dissipation hole communicating with the heat dissipation cavity.

8. A fan with a stainless steel side plate according to claim 5, characterized in that, The cross-sectional width of the structural hole gradually decreases from the inside to the outside.

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