Fan protective cover structure

Abstract

The utility model discloses a fan protective cover structure, which relates to the technical field of fans, and comprises a fan body, a transmission part, a driving motor and a protective cover, the protective cover comprises a protective cover body, the protective cover body comprises an outer side plate and a top plate, the transmission part is positioned below the top plate, the fan body comprises a fan shaft, and the driving motor comprises a motor shaft. The distance between the fan shaft and the motor shaft in the first direction is adjustable, the protective cover further comprises an inner side plate, the transmission part is further located between the inner side plate and the outer side plate, the inner side plate is provided with a first through hole allowing the motor shaft to move in the first direction, and the motor shaft penetrates through the first through hole; and the movable protection plate is arranged on the side face, away from the outer side plate, of the inner side plate, the motor shaft is sleeved with the movable protection plate, and the first through hole is shielded by the movable protection plate. The fan solves the technical problem that in the prior art, the side, close to the fan body, of a transmission part is exposed.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a fan protective cover structure. Background Art

[0002] The entire blower relies on transmission components for power transmission. The transmission components can be pulleys and belts. To ensure personal safety, protective covers need to be installed on the transmission components. The existing protective covers only protect the side of the transmission components away from the blower body. The side of the transmission components close to the blower body is still exposed. During daily maintenance, there is still a risk that the staff's fingers will come into contact with the transmission components.

[0003] For example, the Chinese invention patent application publication number CN117189592A discloses a high-efficiency, low-noise Roots blower, which is equipped with a transmission chain guard, but does not provide a detailed description of the specific structure of the transmission chain guard, and its drawings do not show the specific structure of the transmission chain guard near the blower body. Another example is the Chinese utility model patent application publication number CN216742076U, which discloses a blower structure with good sealing performance. Figure 1 and Figure 2 It can be clearly seen from the figure that the side of the transmission component close to the blower is exposed. Therefore, there is an urgent need for a protective cover structure in which the side of the transmission component close to the blower body is not exposed. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a fan protective cover structure to prevent the transmission components from being exposed on the side close to the fan.

[0005] To achieve the above-mentioned object, the present invention provides a fan protective cover structure, comprising a fan body, a transmission component, a drive motor and a protective cover, wherein the drive motor is driven and connected to the fan body through the transmission component, the protective cover comprises a protective cover body, the protective cover body comprises an outer plate, the top of the outer plate is provided with a top plate near the side of the transmission component, the transmission component is located below the top plate, the fan body comprises a fan shaft, the drive motor comprises a motor shaft, the horizontal projection direction of the vertical line between the fan shaft and the motor shaft is a first direction, the distance between the fan shaft and the motor shaft along the first direction is adjustable, and the protective cover further comprises:

[0006] an inner plate, the inner plate and the outer plate being arranged in parallel, the top plate being located between the top of the inner plate and the top of the outer plate, the transmission component being further located between the inner plate and the outer plate, the inner plate being provided with a first through hole allowing the motor shaft to move along the first direction, the motor shaft passing through the first through hole;

[0007] A movable protective plate is provided on the side of the inner plate away from the outer plate, the movable protective plate is sleeved on the motor shaft, the first through hole is located between the movable protective plate and the inner plate, and the first through hole is blocked by the movable protective plate.

[0008] Furthermore, the movable protective plate includes a first plate and a second plate, the first plate and the second plate are spliced ​​to form a second through hole allowing the motor shaft to pass through, and the first plate and the second plate are respectively slidably engaged with the inner plate along the first direction.

[0009] Furthermore, the first plate is provided with a first notch, the second plate is provided with a second notch, the first notch and the second notch are spliced ​​to form the second through hole, the first plate extends away from the inner plate at the first notch to form a first arc-shaped plate, the second plate extends away from the inner plate at the second notch to form a second arc-shaped plate, the first arc-shaped plate and the second arc-shaped plate are spliced ​​to form a protective tube, the cross-section of the protective tube is a circular ring, and the protective tube is externally fitted on the motor shaft.

[0010] Furthermore, a first strip-shaped through hole is provided at the top of the first plate, and the first strip-shaped through hole extends along the first direction. A first connecting rod is fixed to the side of the inner plate, and the first connecting rod passes through the first strip-shaped through hole and is screwed with a first nut. The first plate cooperates with the first nut on the side away from the inner plate, and a second strip-shaped through hole is provided at the top of the second plate, and the second strip-shaped through hole extends along the first direction. A second connecting rod is also fixed to the side of the inner plate, and the second connecting rod passes through the second strip-shaped through hole and is screwed with a second nut. The second plate cooperates with the second nut on the side away from the inner plate.

[0011] Furthermore, a third strip-shaped through hole is provided at the lower part of the first plate, and the third strip-shaped through hole extends along the first direction. A third connecting rod is also fixed to the side of the inner plate, and the third connecting rod passes through the third strip-shaped through hole and is screwed with a third nut. The first plate cooperates with the third nut on the side away from the inner plate, and a fourth strip-shaped through hole is provided at the lower part of the second plate, and the fourth strip-shaped through hole extends along the first direction. A fourth connecting rod is also fixed to the side of the inner plate, and the fourth connecting rod passes through the fourth strip-shaped through hole and is screwed with a fourth nut. The second plate cooperates with the fourth nut on the side away from the inner plate.

[0012] Furthermore, the fan protective cover structure also includes a fan shaft cover, which is arranged on the side of the inner plate away from the outer plate, the fan shaft passes through the fan shaft cover, the fan shaft cover is fitted with the fan body, and the fan shaft cover and the inner plate are detachably connected.

[0013] Furthermore, the side wall of the fan shaft cover away from the inner plate is provided with two fifth strip-shaped through holes, and the two fifth strip-shaped through holes are provided at opposite ends of the fan shaft cover along the first direction. The fifth strip-shaped through holes are arranged along the vertical direction, and the side surface of the inner plate is also provided with two fifth connecting rods, and the fifth connecting rods pass through the fifth strip-shaped through holes and are screwed with fifth nuts. The outer side surface of the side wall of the fan shaft cover away from the inner plate cooperates with the fifth nut.

[0014] Furthermore, the fan protective cover structure also includes a mounting base, the fan body and the drive motor are installed on the upper end surface of the mounting base, the protective cover is installed on one side of the mounting base, the protective cover and the mounting base are detachably connected, and the lower end surface of the first plate and the lower end surface of the second plate are respectively fitted with the upper end surface of the mounting base.

[0015] Furthermore, the top plate is provided with an observation window.

[0016] The beneficial effects of the utility model are:

[0017] By adding an inner plate to the protective cover, the transmission components are located between the inner and outer plates and below the top plate, effectively preventing the transmission components from being exposed on the side close to the fan body. During routine maintenance, the risk of workers' fingers touching the transmission components is greatly reduced.

[0018] When the distance between the fan shaft and the motor shaft changes along the first direction, the motor shaft of the drive motor can move along the first through hole, and the movable protective plate can move with the motor shaft. After the position of the drive motor changes, there is no need to replace the inner plate. Through the cooperation of the movable protective plate and the first through hole, a good anti-dew effect can still be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 This is an overall structural diagram of a fan protective cover structure of the utility model;

[0021] Figure 2 This is a structural diagram of a fan protective cover structure of the utility model after the protective cover is removed;

[0022] Figure 3 This is a partial structural diagram of a fan protective cover structure of the utility model;

[0023] Figure 4 This is a structural diagram of a protective cover in a fan protective cover structure of the utility model;

[0024] Figure 5 relative to Figure 4 Partial structural diagram;

[0025] Figure 6 relative to Figure 4 dorsal view of;

[0026] Figure 7 This is a structural diagram of a movable protective plate in a fan protective cover structure of the utility model.

[0027] In the figure, 1. driving motor; 2. fan body; 3. protective cover; 31. protective cover body; 311. top plate; 3111. observation window; 312. outer plate; 32. inner plate; 321. first through hole; 33. movable protective plate; 331. first plate; 3311. first notch; 3312. first arc-shaped plate; 3313. first strip-shaped through hole; 3314. third strip-shaped through hole; 332. second plate; 3321. second notch; 3322. second arc-shaped plate; 3323. second strip-shaped through hole; 3324. fourth strip-shaped through hole; 333. second through hole; 334. protective cylinder; 34. fan shaft cover; 341. third through hole; 342. fifth strip-shaped through hole; 4. mounting seat; 5. transmission component; 51. belt; 52. pulley. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1 -Attached Figure 7 , clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of this application.

[0029] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as described in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, the terms "first," "second," and so on, used in this application are for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0031] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] In addition, the technical solutions between the various embodiments of the present application can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0033] The utility model provides a fan protective cover structure, including a fan body 2, a transmission component 5, a drive motor 1 and a protective cover 3, the drive motor 1 is driven and connected to the fan body 2 through the transmission component 5, the protective cover 3 includes a protective cover body 31, the protective cover body 31 includes an outer plate 312, the top of the outer plate 312 is provided with a top plate 311 near the side of the transmission component 5, the transmission component 5 is located below the top plate 311, the fan body 2 includes a fan shaft, the drive motor 1 includes a motor shaft, the horizontal projection direction of the vertical line between the fan shaft and the motor shaft is a first direction, the distance between the fan shaft and the motor shaft along the first direction is adjustable, and the protective cover 3 also includes a fan shaft. In summary: the inner plate 32, the inner plate 32 and the outer plate 312 are arranged in parallel, the top plate 311 is located between the top of the inner plate 32 and the top of the outer plate 312, the transmission component 5 is also located between the inner plate 32 and the outer plate 312, the inner plate 32 is provided with a first through hole 321 allowing the motor shaft to move along the first direction, and the motor shaft passes through the first through hole 321; the movable protective plate 33, the movable protective plate 33 is provided on the side of the inner plate 32 away from the outer plate 312, the movable protective plate 33 is sleeved on the motor shaft, the first through hole 321 is located between the movable protective plate 33 and the inner plate 32, and the first through hole 321 is blocked by the movable protective plate 33.

[0034] In the technical solution proposed in the present application, by adding an inner plate 32 to the protective cover 3, the transmission component 5 is located between the inner plate 32 and the outer plate 312, and is located below the top plate 311, which effectively prevents the transmission component 5 from being exposed on the side close to the fan body 2. During daily maintenance, the risk of the staff's fingers touching the transmission component 5 is greatly reduced; when the distance between the fan shaft and the motor shaft changes along the first direction, the motor shaft of the drive motor 1 can move along the first through hole 321, and the movable protective plate 33 can move with the motor shaft. After the position of the drive motor 1 changes, there is no need to replace the inner plate 32. Through the cooperation of the movable protective plate 33 and the first through hole 321, a good anti-dew effect can still be achieved.

[0035] It should be noted that, in actual operation, the transmission component 5 usually includes two pulleys 52, which are connected by a belt 51. The fan body 2 and the drive motor 1 are jointly installed on a mounting base 4. The position of the fan body 2 on the mounting base 4 is fixed. Affected by the length of the belt 51, the distance between the drive motor 1 and the fan body 2 along the first direction will change.

[0036] When installing the movable protective plate 33, the pulley 52 corresponding to the motor shaft will interfere with the installation of the movable protective plate 33. If the movable protective plate 33 is a whole structure, the pulley 52 can only be disassembled when installing the movable protective plate 33, which is inefficient. Frequent disassembly of the pulley 52 is bound to affect the assembly accuracy of the pulley 52 and the motor shaft.

[0037] In order to facilitate the installation of the movable protective plate 33 and avoid frequent disassembly of the pulley 52, as a preferred embodiment, more specifically, the movable protective plate 33 includes a first plate 331 and a second plate 332. The first plate 331 and the second plate 332 are spliced ​​to form a second through hole 333 that allows the motor shaft to pass through. The first plate 331 and the second plate 332 are respectively slidably engaged with the inner plate 32 along a first direction. After the movable protective plate 33 is divided into the first plate 331 and the second plate 332, the first plate 331 and the second plate 332 can be assembled after the drive motor 1 has completed its movement. By assembling the first plate 331 and the second plate 332 to form the movable protective plate 33, interference with the pulley 52 can be avoided, and frequent disassembly of the pulley 52 is unnecessary.

[0038] To prevent the motor shaft from being exposed, as a preferred embodiment, the present invention further improves the following: the first plate 331 is provided with a first notch 3311, the second plate 332 is provided with a second notch 3321, the first notch 3311 and the second notch 3321 are spliced ​​to form a second through hole 333, the first plate 331 extends away from the inner plate 32 at the first notch 3311 to form a first curved plate 3312, the second plate 332 extends away from the inner plate 32 at the second notch 3321 to form a second curved plate 3322, the first curved plate 3312 and the second curved plate 3322 are spliced ​​to form a protective tube 334, the protective tube 334 having a circular cross-section and being externally mounted on the motor shaft, with the end surface of the protective tube 334 abutting against the side surface of the drive motor 1. The provision of the protective tube 334 effectively prevents the motor shaft from being exposed.

[0039] When the first plate 331 and the second plate 332 are actually used, they must simultaneously meet the requirements of being easy to move, being able to be quickly assembled with the inner plate 32 after moving, and being able to be quickly disassembled during daily maintenance. In order to meet the above requirements at the same time, as a preferred embodiment, the further improvement of the present invention is that a first strip-shaped through hole 3313 is provided at the top of the first plate 331, and the first strip-shaped through hole 3313 extends along the first direction. A first connecting rod is fixed to the side of the inner plate 32, and the first connecting rod passes through the first strip-shaped through hole 3313 and is screwed with a first nut. The side of the first plate 331 away from the inner plate 32 cooperates with the first nut, and the top of the second plate 332 is provided with a second strip-shaped through hole 3323, and the second strip-shaped through hole 3323 extends along the first direction. A second connecting rod is also fixed to the side of the inner plate 32, and the second connecting rod passes through the second strip-shaped through hole 3323 and is screwed with a second nut. The side of the second plate 332 away from the inner plate 32 cooperates with the second nut.

[0040] The first strip-shaped through hole 3313 and the first connecting rod cooperate to facilitate the movement of the first plate 331. By tightening the first nut, the first plate 331 and the inner plate 32 can be quickly assembled, and by loosening the first nut, the first plate 331 can be quickly disassembled. The second strip-shaped through hole 3323 and the second connecting rod cooperate to facilitate the movement of the second plate 332. By tightening the second nut, the second plate 332 and the inner plate 32 can be quickly assembled, and by loosening the second nut, the second plate 332 can be quickly disassembled.

[0041] In order to ensure that the first plate 331 and the second plate 332 can be firmly connected to the inner plate 32, as a preferred embodiment, the further improvement of the present invention is that the lower part of the first plate 331 is provided with a third strip-shaped through hole 3314, the third strip-shaped through hole 3314 extends along the first direction, and the side of the inner plate 32 is also fixed with a third connecting rod, the third connecting rod passes through the third strip-shaped through hole 3314 and is screwed with a third nut, the side of the first plate 331 away from the inner plate 32 cooperates with the third nut, the lower part of the second plate 332 is provided with a fourth strip-shaped through hole 3324, the fourth strip-shaped through hole 3324 extends along the first direction, the side of the inner plate 32 is also fixed with a fourth connecting rod, the fourth connecting rod passes through the fourth strip-shaped through hole 3324 and is screwed with a fourth nut, and the side of the second plate 332 away from the inner plate 32 cooperates with the fourth nut.

[0042] In order to prevent the fan shaft from being exposed, as a preferred embodiment, the further improvement of the utility model is that the fan protective cover 3 structure also includes a fan shaft cover 34, and the fan shaft cover 34 is arranged on the side of the inner plate 32 away from the outer plate 312. The fan shaft cover 34 is provided with a third through hole 341, and the fan shaft passes through the fan shaft cover 34 through the third through hole 341. The fan shaft cover 34 is fitted with the fan body 2, and the fan shaft cover 34 and the inner plate 32 are detachably connected.

[0043] It should be noted that the fan shaft cover 34 can be an integral structure. During installation, the fan shaft cover 34 is installed by removing the pulley 52 corresponding to the fan shaft. Since the fan shaft cover 34 is a hollow structure, as long as the fan shaft cover 34 and the inner plate 32 are detachably connected, the fan shaft cover 34 does not need to be removed during routine maintenance. That is, the pulley 52 corresponding to the fan shaft only needs to be removed when the fan shaft cover 34 is initially installed. There is no need to disassemble the pulley 52 during routine maintenance.

[0044] To facilitate the connection between the fan shaft cover 34 and the inner plate 32, as a preferred embodiment, the present invention is further improved in that two fifth strip-shaped through holes 342 are provided on the side wall of the fan shaft cover 34 away from the inner plate 32. The two fifth strip-shaped through holes 342 are provided at opposite ends of the fan shaft cover 34 along the first direction. The fifth strip-shaped through holes 342 are arranged in the vertical direction. Two fifth connecting rods are also provided on the side of the inner plate 32. The fifth connecting rods pass through the fifth strip-shaped through holes 342 and are screwed to fifth nuts. The outer side surface of the side wall of the fan shaft cover 34 away from the inner plate 32 engages with the fifth nuts. The vertical arrangement of the fifth strip-shaped through holes 342 facilitates assembly of the fan shaft cover 34 and the inner plate 32.

[0045] The fan shield 3 also includes a mounting base 4. The fan body 2 and drive motor 1 are mounted on the upper end surface of the mounting base. The shield 3 is mounted on one side of the mounting base 4. The shield 3 and mounting base 4 are detachably connected. The lower end surface of the first plate 331 and the lower end surface of the second plate 332 are respectively aligned with the upper end surface of the mounting base 4. The top plate 311 is provided with an observation window 3111.

[0046] The above description is only a preferred embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made by using the contents of the present application description and drawings under the inventive concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A fan protective cover structure, comprising a fan body, a transmission component, a drive motor and a protective cover, wherein the drive motor is driven and connected to the fan body through the transmission component, the protective cover comprises a protective cover body, the protective cover body comprises an outer plate, the top of the outer plate is provided with a top plate near the side of the transmission component, the transmission component is located below the top plate, the fan body comprises a fan shaft, the drive motor comprises a motor shaft, the horizontal projection direction of the vertical line between the fan shaft and the motor shaft is a first direction, the distance between the fan shaft and the motor shaft along the first direction is adjustable, and is characterized in that The protective cover also includes: an inner plate, the inner plate and the outer plate being arranged in parallel, the top plate being located between the top of the inner plate and the top of the outer plate, the transmission component being further located between the inner plate and the outer plate, the inner plate being provided with a first through hole allowing the motor shaft to move along the first direction, the motor shaft passing through the first through hole; A movable protective plate is provided on the side of the inner plate away from the outer plate, the movable protective plate is sleeved on the motor shaft, the first through hole is located between the movable protective plate and the inner plate, and the first through hole is blocked by the movable protective plate.

2. A fan protective cover structure according to claim 1, characterized in that: The movable protective plate includes a first plate and a second plate. The first plate and the second plate are spliced ​​to form a second through hole allowing the motor shaft to pass through. The first plate and the second plate are respectively slidably matched with the inner plate along the first direction.

3. A fan protective cover structure according to claim 2, characterized in that: The first plate is provided with a first notch, the second plate is provided with a second notch, the first notch and the second notch are spliced ​​to form the second through hole, the first plate extends away from the inner plate at the first notch to form a first arc-shaped plate, the second plate extends away from the inner plate at the second notch to form a second arc-shaped plate, the first arc-shaped plate and the second arc-shaped plate are spliced ​​to form a protective tube, the cross-section of the protective tube is a circular ring, and the protective tube is externally fitted on the motor shaft.

4. A fan protective cover structure according to claim 3, characterized in that: The top of the first plate is provided with a first strip-shaped through hole, and the first strip-shaped through hole extends along the first direction. A first connecting rod is fixed to the side of the inner plate, and the first connecting rod passes through the first strip-shaped through hole and is screwed with a first nut. The first plate is matched with the first nut on the side away from the inner plate. The top of the second plate is provided with a second strip-shaped through hole, and the second strip-shaped through hole extends along the first direction. A second connecting rod is also fixed to the side of the inner plate, and the second connecting rod passes through the second strip-shaped through hole and is screwed with a second nut. The second plate is matched with the second nut on the side away from the inner plate.

5. A fan protective cover structure according to claim 4, characterized in that: The lower part of the first plate is provided with a third strip-shaped through hole, and the third strip-shaped through hole extends along the first direction. A third connecting rod is also fixed to the side of the inner plate, and the third connecting rod passes through the third strip-shaped through hole and is screwed with a third nut. The side of the first plate away from the inner plate cooperates with the third nut, and the lower part of the second plate is provided with a fourth strip-shaped through hole, and the fourth strip-shaped through hole extends along the first direction. A fourth connecting rod is also fixed to the side of the inner plate, and the fourth connecting rod passes through the fourth strip-shaped through hole and is screwed with a fourth nut. The side of the second plate away from the inner plate cooperates with the fourth nut.

6. A fan protective cover structure according to claim 1, characterized in that: The fan protective cover structure also includes a fan shaft cover, which is arranged on the side of the inner plate away from the outer plate. The fan shaft passes through the fan shaft cover, and the fan shaft cover is fitted with the fan body. The fan shaft cover and the inner plate are detachably connected.

7. A fan protective cover structure according to claim 6, characterized in that: The side wall of the fan shaft cover away from the inner plate is provided with two fifth strip-shaped through holes, and the two fifth strip-shaped through holes are provided at opposite ends of the fan shaft cover along the first direction. The fifth strip-shaped through holes are arranged along the vertical direction, and the side surface of the inner plate is also provided with two fifth connecting rods, and the fifth connecting rods pass through the fifth strip-shaped through holes and are screwed with fifth nuts. The outer side surface of the side wall of the fan shaft cover away from the inner plate cooperates with the fifth nut.

8. A fan protective cover structure according to claim 2, characterized in that: The fan protective cover structure also includes a mounting base, the fan body and the drive motor are installed on the upper end surface of the mounting base, the protective cover is installed on one side of the mounting base, the protective cover and the mounting base are detachably connected, and the lower end surface of the first plate and the lower end surface of the second plate are respectively fitted with the upper end surface of the mounting base.

9. The fan protective cover structure according to claim 1, characterized in that: The top plate is provided with an observation window.

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