Movable ventilator

Abstract

The utility model discloses a movable ventilator, which relates to the technical field of fans and comprises four support frames, the four support frames are annularly arranged at equal intervals, the top of each support frame is fixedly provided with a rotary adjusting mechanism, the top of each rotary adjusting mechanism is fixedly provided with a fan shell, and the fan shell is fixedly provided with a fan. And a driving motor is fixedly mounted on the back surface of the fan shell. By adopting the structure, when the fan needs to be overhauled, the mounting screw rod can be twisted to enable the end part of the mounting screw rod to be separated from the limiting hole, the covering ring is detached from the air inlet groove, the limiting block on the limiting circular plate is separated from the front end in the mounting strip groove at the moment, and the insertion strip can be pulled out to detach the fan blade; the limiting circular plate is arranged at the front end of the rotating shaft, the limiting block is inserted into the limiting strip groove, the rotating shaft rotates to drive the limiting circular plate to rotate, the rotating stability of the fan blades can be improved, rapid disassembly and assembly are facilitated, and maintenance and overhaul of the device are facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of fan technology, and specifically relates to a mobile ventilator. Background Technology

[0002] A ventilator is a mechanical device used to transport gas and improve air circulation. It mainly consists of an impeller, casing, inlet, and outlet. Its working principle relies on the rotation of the impeller to give energy to the gas, thereby creating a pressure difference that causes the gas to flow within the ventilation system, achieving the purpose of ventilation. Ventilators are widely used in many fields such as industry, civil use, and agriculture. For example, in industrial plants, they are used to remove waste gas, dust, and heat generated during production, providing a good working environment for workers; in civil buildings, they can be used to regulate indoor air, keeping it fresh and comfortable; in agricultural production, they can provide suitable ventilation conditions for greenhouses, promoting crop growth. According to different working principles and structural forms, ventilators can be divided into various types such as centrifugal fans, axial flow fans, and mixed flow fans to meet the ventilation needs of different occasions.

[0003] Chinese Patent No. CN219754846U discloses a mobile centrifugal fan with a base frame on which the fan body is mounted. Rotary shafts are rotatably mounted at the four corners of the base frame. Wheel seats are located at the bottom of each shaft, and movable wheels are rotatably mounted on the wheel seats. A threaded cylinder is fitted onto the shaft, and a movable sleeve is slidably fitted onto the threaded cylinder. Support legs are symmetrically hinged to both sides of the wheel seats, and connecting rods are symmetrically hinged to both sides of the movable sleeve, with the connecting rods hinged to the middle of the support legs. A rotating sleeve is fitted onto the threaded cylinder through a threaded hole, and the movable sleeve is rotatably fitted onto the rotating sleeve. Initially, the support legs are away from the ground. When the fan is moved into position and parked, the rotation of the rotating sleeve adjusts the vertical movement of the movable sleeve, adjusting the support legs' contact with the ground. The support height is controlled by adjusting the angle of the support legs.

[0004] While the aforementioned device demonstrated convenience to some extent during actual use, it also presented some significant problems in practical applications. Specifically, the fan's internal structure is integrated. In this configuration, if the impeller accumulates substantial dust during operation, it severely impacts the normal functioning of the entire device. Furthermore, cleaning the fan's interior or replacing the fan blades is extremely inconvenient. Clearly, the difficulty in opening the fan's internal components significantly hinders cleaning, inspection, and maintenance. Therefore, the existing technology exhibits certain deficiencies and shortcomings. To better meet practical application needs and improve the equipment's reliability and ease of use, improvements are urgently needed. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a mobile ventilator to solve the problem of inconvenience in cleaning and maintaining the inside of the ventilator in the prior art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A mobile ventilator includes a support frame, which consists of four equally spaced rings. A rotation adjustment mechanism is fixedly installed on the top of the support frame, and a fan housing is fixedly installed on the top of the rotation adjustment mechanism. A drive motor is fixedly installed on the back of the fan housing. A fan impeller assembly is fixedly installed through the output end of the drive motor and is rotatably connected to the inside of the fan housing. A cover assembly is provided on the front of the fan housing, covering the front of the fan housing. An air outlet is opened on one side of the fan housing. Casters are rotatably connected to the bottom of the support frame.

[0008] The fan impeller assembly includes a turntable, which is fixedly connected to the output end of the drive motor and rotatably connected to the inside of the fan housing. A rotating shaft is fixedly connected to the front of the turntable, and mounting grooves are evenly spaced on the outer surface of the rotating shaft. Inserts are inserted into the mounting grooves, and fan blades are fixedly installed on the outer sides of the inserts.

[0009] As a preferred technical solution, an installation frame is fixedly installed on the outside of the air outlet, and installation holes are provided at the four corners of the installation frame, and the installation holes are countersunk holes.

[0010] As a preferred technical solution, the covering assembly includes an air inlet slot and a covering ring. The air inlet slot is opened on the front of the fan housing. Side mounting brackets are fixedly connected at equal intervals on the outer side of the covering ring. The outer end of the side mounting bracket is threaded with a mounting screw. The side mounting bracket is installed on the outer side of the fan housing through the mounting screw. A protective mesh frame is fixedly installed on the inner side of the covering ring. A limiting circular plate is rotatably connected to the middle of the protective mesh frame through a ball bearing. The limiting circular plate covers the front of the rotating shaft.

[0011] As a preferred technical solution, the back of the limiting circular plate is fixedly connected with limiting blocks at equal intervals, the rear side of the limiting blocks is inserted into the front end of each mounting groove, and the back of the limiting blocks and the front of the insert are fitted together.

[0012] As a preferred technical solution, the mounting screw is configured as a hand-tightening screw, and limit holes are equally spaced on the outer side of the fan housing, with the end of the hand-tightening screw inserted into the limit holes.

[0013] As a preferred technical solution, the rotation adjustment mechanism includes a base plate, which is fixedly connected to the top of the support frame. A mounting plate is rotatably connected to the top of the base plate, and a mounting block is fixedly connected to the top of the mounting plate. The top of the mounting block is fixedly connected to the bottom of the fan housing. One end of the mounting plate is threadedly connected to a limit screw, and the end of the limit screw passes through the mounting plate.

[0014] As a preferred technical solution, the top of the base plate has positioning holes arranged in a ring at equal intervals, and the end of the limiting screw is inserted into the positioning hole. The limiting screw is a hand-tightening screw.

[0015] In summary, the present invention has the following main advantages:

[0016] Firstly, this device features a rotary adjustment mechanism, allowing it to be flexibly moved to the desired position on the ground using the casters. Once the device has been moved, loosening the limit screw to disengage it from the limit hole allows the mounting plate to rotate on the base plate, thereby causing the fan casing and the overall structure to rotate and shift. This enables flexible adjustment of the air outlet direction. This mechanism, combined with the device's mobile design, greatly improves ease of use and provides convenience for users in various scenarios.

[0017] Secondly, this device, by setting up a fan impeller assembly, allows the drive motor to be started during use. The drive motor drives the turntable inside the fan casing to rotate, which in turn rotates the shaft. The shaft drives the insert strip inside the mounting groove to drive the fan blades to rotate, so that air enters the fan casing from the air inlet slot and is discharged from the air outlet. If the fan needs to be repaired, the mounting screw is turned so that its end is disengaged from the limiting hole, and the cover ring is removed from the air inlet slot. At this time, the limiting block on the limiting circular plate disengages from the front end inside the mounting groove, and the insert strip can be pulled out to remove the fan blades. In use, after the cover ring is installed, the limiting circular plate is set at the front end of the shaft, and the limiting block is inserted into the limiting groove. The rotation of the shaft drives the limiting circular plate to rotate, which not only improves the stability of the fan blade rotation, but also facilitates quick disassembly and assembly, making the maintenance and repair of the device convenient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0020] Figure 3 This is a bottom view structural diagram of this utility model;

[0021] Figure 4 This is a front view structural diagram of the fan impeller assembly in the disassembled state according to this utility model;

[0022] Figure 5 This is a rear view structural diagram of the fan impeller assembly in the disassembled state according to this utility model.

[0023] Reference numerals: 1. Support frame; 2. Rotation adjustment mechanism; 21. Base plate; 22. Mounting plate; 23. Mounting block; 24. Limiting screw; 25. Positioning hole; 3. Fan casing; 4. Drive motor; 5. Fan impeller assembly; 51. Turntable; 52. Rotating shaft; 53. Mounting groove; 54. Insert strip; 55. Fan blade; 6. Cover assembly; 61. Air inlet slot; 62. Cover ring; 63. Side mounting bracket; 64. Mounting screw; 65. Protective mesh frame; 66. Limiting circular plate; 67. Limiting block; 68. Limiting hole; 7. Air outlet; 8. Casters; 9. Mounting frame; 10. Mounting hole. Detailed Implementation

[0024] Example

[0025] refer to Figures 1 to 5A mobile ventilator according to this embodiment includes a support frame 1, which consists of four equally spaced rings. A rotation adjustment mechanism 2 is fixedly installed on the top of the support frame 1, and a fan housing 3 is fixedly installed on the top of the rotation adjustment mechanism 2. A drive motor 4 is fixedly installed on the back of the fan housing 3. A fan impeller assembly 5 is fixedly installed through the output end of the drive motor 4 through the fan housing 3. The fan impeller assembly 5 is rotatably connected to the inside of the fan housing 3. A cover assembly 6 is provided on the front of the fan housing 3, covering the front of the fan housing 3. An air outlet 7 is opened on one side of the fan housing 3. A caster wheel 8 is rotatably connected to the bottom of the support frame 1.

[0026] The fan impeller assembly 5 includes a turntable 51, which is fixedly connected to the output end of the drive motor 4 and rotatably connected to the inside of the fan housing 3. A rotating shaft 52 is fixedly connected to the front of the turntable 51. The outer surface of the rotating shaft 52 has evenly spaced mounting grooves 53, into which inserts 54 are inserted. Fan blades 55 are fixedly mounted on the outer sides of each insert 54. Four equally spaced, ring-shaped support frames 1 provide stable support. The casters 8 at the bottom allow the fan to move flexibly and be quickly adjusted according to actual needs, greatly improving usability. Convenience: The rotary adjustment mechanism 2 can adjust the rotational displacement of the fan housing 3 and the entire fan structure, thereby flexibly changing the direction of the air outlet 7 to adapt to different ventilation scenarios. The fan impeller assembly 5 is driven by the drive motor 4, and the turntable 51 drives the rotating shaft 52. The design of the mounting groove 53 and the insert 54 facilitates the installation and removal of the fan blades 55, making maintenance and repair convenient. The covering component 6 can cover and protect the front of the fan housing 3. The setting of the air outlet 7 ensures smooth ventilation. Overall, this mobile ventilator combines stability, flexibility and ease of maintenance, and can meet a variety of ventilation needs.

[0027] refer to Figures 1-3 An installation frame 9 is fixedly installed on the outside of the air outlet 7. Installation holes 10 are provided at the four corners of the installation frame 9. The installation holes 10 are countersunk holes. The installation frame 9 provides additional structural support and protection for the air outlet 7, ensuring that the air outlet 7 is not easily damaged during use. The installation holes 10 at the four corners facilitate the connection and installation of the ventilator with other equipment or fixed structures, improving the installation adaptability of the ventilator in different scenarios. The countersunk holes 10 make the connection more aesthetically pleasing and neat, avoiding the safety hazards such as scratches caused by protruding bolt heads. At the same time, it also makes the connection more stable and ensures the stability of the ventilator during operation.

[0028] refer to Figures 1-2 and Figures 4-5The cover assembly 6 includes an air inlet slot 61 and a cover ring 62. The air inlet slot 61 is located on the front of the fan housing 3. Side mounts 63 are fixedly connected at equal intervals to the outer side of the cover ring 62. The outer end of the side mounts 63 is threaded with a mounting screw 64. The side mounts 63 are installed on the outer side of the fan housing 3 via the mounting screw 64. A protective mesh frame 65 is fixedly installed on the inner side of the cover ring 62. A limiting circular plate 66 is rotatably connected to the middle of the protective mesh frame 65 via a ball bearing. The limiting circular plate 66 covers the front of the rotating shaft 52. Limiting blocks 67 are fixedly connected at equal intervals to the back of the limiting circular plate 66. The rear side of the limiting blocks 67 is inserted into the front end of each mounting slot 53. The back of the limiting blocks 67 and the front of the insert 54 are in close contact. The air inlet 61 provides a channel for air to enter the fan housing 3. The cover ring 62 can be easily installed on the outside of the fan housing 3 via the side mounting bracket 63 and the mounting screw 64, which facilitates installation and disassembly and makes it easier to inspect and maintain the internal structure. The protective mesh frame 65 inside the cover ring 62 plays a protective role, preventing foreign objects from entering the fan and damaging components such as the fan blades 55. The limiting circular plate 66 is rotatably connected to the middle of the protective mesh frame 65 via ball bearings and covers the front of the rotating shaft 52. The limiting block 67 on its back is inserted into the front end of the mounting groove 53 and fits against the front of the insert 54. This can improve the stability of the fan blades 55 rotation when the fan is running, and at the same time, it is convenient to disassemble and assemble components such as the fan blades 55 when the fan needs to be inspected.

[0029] refer to Figures 1-2 The mounting screw 64 is a hand-tightening screw. Limiting holes 68 are equally spaced on the outer side of the fan housing 3. The end of the hand-tightening screw is inserted into the limiting hole 68. The mounting screw 64 is a hand-tightening screw, which can be operated without the aid of tools, making the installation and removal of the cover ring 62 more convenient and efficient. It allows users to quickly open the cover assembly 6 to inspect and maintain the inside of the fan when needed. The limiting holes 68 equally spaced on the outer side of the fan housing 3 cooperate with the hand-tightening screw to ensure that the mounting screw 64 can firmly fix the cover ring 62 to the fan housing 3, maintain stability during the operation of the fan, and prevent the cover ring 62 from loosening and affecting the ventilation effect or causing safety hazards.

[0030] refer to Figures 1-3The rotary adjustment mechanism 2 includes a base plate 21, which is fixedly connected to the top of the support frame 1. A mounting plate 22 is rotatably connected to the top of the base plate 21, and a mounting block 23 is fixedly connected to the top of the mounting plate 22. The top of the mounting block 23 is fixedly connected to the bottom of the fan housing 3. One end of the mounting plate 22 is threadedly connected to a limiting screw 24, the end of which passes through the mounting plate 22. Positioning holes 25 are evenly spaced and arranged in a ring on the top of the base plate 21. The end of the limiting screw 24 is inserted into the positioning hole 25. The limiting screw 24 is a hand-tightening screw. The base plate 21 is fixed to the top of the support frame 1, providing stable support for the entire mechanism. The mounting plate 22 and the base plate... The 21 rotating connection allows the fan housing 3 and the entire fan structure to rotate flexibly, thereby adjusting the direction of the air outlet 7 according to actual needs, greatly improving the flexibility of the ventilator. The mounting block 23 firmly connects the mounting plate 22 to the fan housing 3, ensuring stability during rotation. The limit screw 24 is a hand-tight screw, which is convenient and quick to operate. The position of the mounting plate 22 can be easily adjusted without the aid of tools. After adjusting to the appropriate position, the end of the limit screw 24 is inserted into the positioning hole 25 on the top of the base plate 21, which can firmly fix the mounting plate 22 and prevent accidental rotation during the operation of the fan, ensuring the stability and reliability of the ventilator.

[0031] Operating principle and advantages: By setting the rotation adjustment mechanism 2, this device can easily roll on the ground with the help of the casters 8 during use, so that it can be flexibly moved to a suitable position according to specific usage needs. After the device has been moved, the limit screw 24 can be loosened to move it upward. Once the limit screw 24 is disengaged from the limit hole 68, the mounting plate 22 can be adjusted to rotate on the base plate 21. By adjusting the rotation of the base plate 21, the fan housing 3 and the entire fan structure can be flexibly adjusted for rotational displacement. In this way, the direction of the fan outlet 7 can be adjusted very flexibly during use. This, together with the mobile design of the device, can further improve the convenience of the device during use, providing great convenience for users in different scenarios.

[0032] By setting the impeller assembly 5, the device can be operated by starting the drive motor 4 during use. When the drive motor 4 is running, it can drive the turntable 51 inside the fan housing 3 to rotate. The rotation of the turntable 51 drives the rotating shaft 52 to rotate, which in turn drives the insert 54 inside the mounting groove 53 to drive the fan blades 55 to rotate. At this time, air can enter the inside of the fan housing 3 through the air inlet slot 61 and then be discharged through the air outlet 7. If the fan needs to be repaired, the end of the mounting screw 64 can be twisted to disengage it from the limiting hole 68. At this time, the cover ring 62 can be removed from the air inlet slot 61, thereby opening the air inlet slot 61. After the cover ring 62 is removed from the air inlet slot 61, the limiting circular plate 66... The limiting block 67 can then detach from the front end of the mounting groove 53. At this point, the insert 54 inside the mounting groove 53 can be pulled out. After the insert 54 is pulled out, the fan blade 55 can be removed. During use, after the cover ring 62 is installed, the limiting circular plate 66 is set at the front end of the rotating shaft 52, and the limiting block 67 is inserted into the limiting groove. The rotation of the rotating shaft 52 will drive the limiting circular plate 66 to rotate. The setting of the limiting circular plate 66 can block the front end of the mounting groove 53, effectively improving the stability of the fan blade 55 rotation. In addition, the rotational design of the limiting circular plate 66 can maintain good stability during the rotation of the fan blade 55, so that the device as a whole has good stability and also has the function of easy and quick disassembly and assembly.

Claims

1. A mobile ventilator comprising four support frames (1) arranged in a ring at equal intervals, characterized in that: The top of the support frame (1) is fixedly installed with a rotary adjusting mechanism (2), the top of the rotary adjusting mechanism (2) is fixedly installed with a fan shell (3), the back of the fan shell (3) is fixedly installed with a driving motor (4), the output end of the driving motor (4) is fixedly installed with a fan impeller group (5) penetrating through the fan shell (3), the fan impeller group (5) is rotatably connected to the inside of the fan shell (3), the front of the fan shell (3) is provided with a covering assembly (6), the covering assembly (6) covers the front of the fan shell (3), one side of the fan shell (3) is provided with an air outlet (7), the bottom of the support frame (1) is rotatably connected with a universal wheel (8); The fan impeller group (5) comprises a rotating disc (51), the rotating disc (51) is fixedly connected to the output end of the driving motor (4), the rotating disc (51) is rotatably connected to the inside of the fan shell (3), the front of the rotating disc (51) is fixedly connected with a rotating shaft (52), the outer surface of the rotating shaft (52) is equally spaced to be provided with a mounting strip groove (53), the inside of the mounting strip groove (53) is inserted with an insertion strip (54), the outer side of the insertion strip (54) is fixedly installed with a fan blade (55).

2. A mobile ventilator according to claim 1, wherein: The outer side of the air outlet (7) is fixedly installed with a mounting frame body (9), the four corners of the mounting frame body (9) are equally provided with a mounting hole (10), the mounting hole (10) is provided as a counter-sunk hole.

3. A mobile ventilator as claimed in claim 1, wherein: The covering assembly (6) comprises an air inlet slot (61) and a covering ring (62), the air inlet slot (61) is provided on the front of the fan shell (3), the outer side of the covering ring (62) is equally fixedly connected with a side-mounted frame (63), the outer end of the side-mounted frame (63) is threadedly connected with a mounting screw rod (64), the side-mounted frame (63) is mounted to the outer side of the fan shell (3) through the mounting screw rod (64), the inner side of the covering ring (62) is fixedly installed with a protective net frame (65), the middle part of the protective net frame (65) is rotatably connected with a limiting circular plate (66) through a ball bearing, the limiting circular plate (66) covers the front of the rotating shaft (52).

4. A mobile ventilator according to claim 3, wherein: The back of the limiting circular plate (66) is equally fixedly connected with a limiting block (67), the rear side of the limiting block (67) is inserted into the front end of each mounting strip groove (53), the back of the limiting block (67) and the front of the insertion strip (54) are attached.

5. A mobile ventilator according to claim 4, wherein: The mounting screw rod (64) is provided as a hand screw rod, the outer side of the fan shell (3) is equally provided with a limiting hole (68), the end of the hand screw rod is inserted into the inside of the limiting hole (68).

6. A mobile ventilator as claimed in claim 1, wherein: Said rotation adjusting mechanism (2) includes a base disc (21), the top of which is fixedly connected to the top of the support frame (1), the top of the base disc (21) is rotationally connected with a mounting disc (22), the top of the mounting disc (22) is fixedly connected with a mounting block (23), the top of the mounting block (23) is fixedly connected with the bottom of the fan shell (3), one end of the mounting disc (22) is threadedly connected with a limiting screw rod (24), and the end of the limiting screw rod (24) penetrates through the mounting disc (22).

7. A mobile ventilator according to claim 6, wherein: The top of the base disc (21) is arranged with equidistantly arranged positioning holes (25), the end of the limiting screw rod (24) is inserted into the positioning holes (25), and the limiting screw rod (24) is a hand screw rod.

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