Automatic air volume adjusting device

Abstract

The utility model provides an automatic air volume adjusting device, which relates to the technical field of air volume adjusting devices and comprises a shell, two oppositely arranged support plates are fixed on the inner side of the shell, a second filter plate and a first filter plate are arranged at one shell opening of the shell, and the second filter plate and the first filter plate are sequentially sleeved with the support plates. A mounting frame fixedly mounted on the supporting plate is fixed to the inner side of the shell, a motor is slidably arranged in the center of the mounting frame, a main shaft of the motor faces the first filter plate and is fixedly provided with a fan blade shaft, and by arranging the fan blade shaft and a mounting base, after the electric push rod retracts to drive the motor to move backwards and blades on the fan blade shaft are taken away from limiting grooves, the fan blade shaft is driven to rotate; the motor main shaft rotates to drive the two blades corresponding to each other in position to be mounted in a staggered manner, so that a fan with three blades can be changed into six blades, the ventilation quantity is further changed, the range for changing the ventilation quantity is widened, and the selection range of a user is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of air volume regulating devices, in particular to an automatic air volume regulating device. Background Art

[0002] The central dust removal system, also known as the central vacuum system, consists of a vacuum cleaner host, vacuum pipes, vacuum sockets, and vacuum components. The vacuum cleaner host is placed outdoors or in a building's machine room, balcony, garage, or equipment room. However, the main technical problems in actual use are that the internal air volume cannot be accurately and automatically adjusted during filtration.

[0003] Therefore, a dust removal system automatically adjusts the air volume device, with the publication number being CN211987654U. The control panel starts the motor, and the motor output drives the blades to rotate, sucking external air into the device, and then discharging the filtered air into the room. The air volume sensor senses the air volume inside the housing, and transmits the air volume signal to the A / D converter. The A / D converter converts the analog signal into a digital signal, which is then transmitted to the single-chip microcomputer. The single-chip microcomputer transmits the digital signal to the control panel, which then displays the value. The control panel is then operated to adjust the signal data and then transmits it to the single-chip microcomputer. The single-chip microcomputer then transmits the signal to the D / A converter, which converts the digital value into an analog value. The D / A converter transmits the signal to a hydraulic cylinder or a motor, which changes the amount of air sucked in by the motor. The hydraulic cylinder output drives the first circular plate to move, which drives the first rod to move, which drives the opening and closing plate to close or open, thereby adjusting the cross-sectional area of ​​the air flow inside the housing, thereby adjusting the air volume. The filtered air then passes into the room through the second cover.

[0004] When this transposition adjusts the air intake volume by adjusting the speed of the motor, the adjustable range is relatively low and the modes are relatively few, which gives users limited choices. Utility Model Content

[0005] The utility model aims to solve the problems existing in the prior art and proposes an automatic air volume regulating device.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: an automatic air volume adjustment device, comprising a shell, two support plates arranged opposite to each other are fixed on the inner side of the shell, a second filter plate and a first filter plate which are sequentially mounted on the support plates are provided at one shell opening of the shell, a mounting frame which is fixed to the inner side of the shell and is fixed to the support plates, a motor is slidingly mounted on the center of the mounting frame, the main shaft of the motor is arranged facing the first filter plate and a fan shaft is fixed on the end face, a mounting seat is provided on the outside of the fan shaft, a plurality of limiting grooves are evenly opened on the end of the mounting seat facing the motor, a plurality of blades are evenly fixed on the side of the fan shaft through the limiting grooves, a plurality of blades are also fixed on the mounting seat, and the positions and quantities of the blades on the fan shaft and the blades on the mounting seat correspond one to one.

[0007] Preferably, the end face of the fan blade shaft is rotatably mounted with a spring rod that passes through the mounting seat, and the end face of the mounting seat is rotatably mounted with a connecting seat that is fixedly sleeved with the telescopic end of the spring rod, and the connecting seat is sleeved with the first filter plate and the second filter plate.

[0008] Preferably, one side of the mounting frame extends outwards and an electric push rod is fixedly connected to the extended end, and the telescopic end of the electric push rod is fixed to the end surface of the housing of the motor.

[0009] Preferably, slide grooves are provided on both sides of the end surface of the first filter plate, the support plate slides in cooperation with the slide grooves, a rack is fixedly connected to the side edge of the first filter plate, a protective cover is fixed to the side wall of the outer shell, a motor fixed to the outer shell is provided in the protective cover, and a gear meshing with the rack is fixed to the motor main shaft fixed to the outer shell.

[0010] Preferably, there are six limiting grooves and six blades in total.

[0011] Preferably, a third filter plate is fixed at another shell opening of the shell, and bolts are provided at the centers of the first filter plate and the third filter plate. The bolts located at the first filter plate are threadedly connected to the connecting seat, and the bolts located at the third filter plate are threadedly connected to the extension end of the mounting frame.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are:

[0013] 1. In the present invention, not only can the fan speed be changed by changing the motor speed, thereby changing the ventilation volume, but also by setting the fan blade shaft and the mounting seat, when the electric push rod contracts and drives the motor to move backward, the blades on the fan blade shaft are taken away from the limit groove, and the two blades corresponding to the two positions are driven by the rotation of the motor main shaft to be staggered and installed, so that the three-blade fan can be changed into a six-blade fan, further changing the ventilation volume, making the range of changing the ventilation volume larger, and the user's range of choices larger.

[0014] 2. In the present invention, a motor is set to drive the gear to rotate, which in turn drives the rack to rotate, so that the first filter plate rotates around the connecting seat, and the second filter plate remains in position. After rotation, the filter holes on the two filter plates overlap, becoming smaller or larger, thereby changing the air intake volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of an automatic air volume adjustment device proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the second filter plate in the present utility model;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the electric push rod in the utility model;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the connecting seat in the utility model;

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the fan shaft in the utility model;

[0020] Figure 6 This is a schematic diagram of the three-dimensional structure of the mounting base in the present utility model;

[0021] Figure 7 This is a schematic diagram of the three-dimensional structure of the spring rod in the utility model;

[0022] Figure 8 It is a schematic diagram of the three-dimensional structure of the bolt in the utility model.

[0023] Legend: 1. First filter plate; 2. Bolt; 3. Connecting seat; 4. Support plate; 5. Gear; 6. Second filter plate; 7. Slide; 8. Protective cover; 9. Housing; 10. Mounting seat; 11. Rack; 12. Third filter plate; 13. Mounting bracket; 14. Electric push rod; 15. Motor; 16. Fan shaft; 17. Limiting slot; 18. Spring rod; 19. Blade. DETAILED DESCRIPTION

[0024] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0026] like Figure 1-8 As shown, an automatic air volume adjustment device includes a shell 9, two support plates 4 arranged opposite to each other are fixed on the inner side of the shell 9, a second filter plate 6 and a first filter plate 1 which are sequentially mounted on the support plate 4 are provided at one shell opening of the shell 9, a mounting frame 13 fixedly mounted on the inner side of the shell 9 and a motor 15 is slidably provided at the center of the mounting frame 13, the main shaft of the motor 15 is arranged facing the first filter plate 1 and a fan shaft 16 is fixed on the end face, a mounting seat 10 is provided on the outside of the fan shaft 16, a plurality of limiting grooves 17 are evenly opened on the end of the mounting seat 10 facing the motor 15, a plurality of blades 19 are evenly fixed on the side of the fan shaft 16 through the limiting grooves 17, and a plurality of blades 19 are also fixed on the mounting seat 10, and the positions and quantities of the blades 19 on the fan shaft 16 and the blades 19 on the mounting seat 10 correspond one to one, there are six limiting grooves 17 and a total of six blades 19.

[0027] By adopting this technical solution, the motor 15 drives the fan shaft 16 to rotate, driving the blades 19 fixed to it to rotate, and driving the mounting base 10 to rotate through the limit slot 17, thereby driving the blades 19 located on the mounting base 10 to rotate together. When the motor 15 located on the mounting frame 13 slides backward and drives the fan shaft 16 to slide backward, the mounting base 10 remains in position due to the cooperation of the bolt 2 and the first filter plate 1 and the second filter plate 6. Therefore, the blades 19 located on the fan shaft 16 are brought out of the limit slot 17. At this time, the rotation of the main shaft of the motor 15 located on the mounting frame 13 will only drive the blades 19 located on the fan shaft 16 to rotate. After the blades 19 located on the fan shaft 16 rotate to a certain position, the motor 15 returns to its original position, driving the fan shaft 16 to return to its original position. At this time, the blades 19 located on the fan shaft 16 can slide into the new limit slot 17, thereby changing the three-blade fan into a six-blade fan.

[0028] like Figure 2 、 Figure 7 and Figure 8 As shown, the end face of the fan shaft 16 is rotatably mounted with a spring rod 18 that passes through the mounting seat 10, and the end face of the mounting seat 10 is rotatably mounted with a connecting seat 3 that is fixedly sleeved with the telescopic end of the spring rod 18, and the connecting seat 3 is sleeved with the first filter plate 1 and the second filter plate 6.

[0029] With this technical solution, the spring rod 18 is used to tighten the distance between the fan shaft 16 and the connecting seat 3 to prevent the mounting seat 10 and the fan shaft 16 from falling off.

[0030] like Figure 3 As shown, one side of the mounting frame 13 extends outwards and the extended end is fixedly connected to the electric push rod 14 , and the telescopic end of the electric push rod 14 is fixed to the end surface of the housing of the motor 15 .

[0031] With this technical solution, the electric push rod 14 is used to push the motor 15 located on the mounting bracket 13 to slide forward or backward.

[0032] like Figure 1 and Figure 3 As shown, slide grooves 7 are provided on both sides of the end face of the first filter plate 1, the support plate 4 slides in cooperation with the slide groove 7, a rack 11 is fixedly connected to the side of the first filter plate 1, a protective cover 8 is fixed to the side wall of the outer shell 9, a motor 15 fixed to the outer shell 9 is provided in the protective cover 8, and a gear 5 meshing with the rack 11 is fixed to the main shaft of the motor 15 fixed to the outer shell 9.

[0033] With this technical solution, the motor 15 fixed to the housing 9 drives the gear 5 to rotate, and then drives the rack 11 to rotate, so that the first filter plate 1 rotates around the connecting seat 3, so that the filter holes on the two filter plates overlap after rotation, making them smaller or larger, thereby changing the air intake volume.

[0034] like Figure 1 and Figure 3 As shown, a third filter plate 12 is fixed at the other shell opening of the shell 9, and bolts 2 are provided at the centers of the first filter plate 1 and the third filter plate 12. The bolts 2 located at the first filter plate 1 are threadedly connected to the connecting seat 3, and the bolts 2 located at the third filter plate 12 are threadedly connected to the extended end of the mounting bracket 13.

[0035] With this technical solution, after the bolt 2 located at the first filter plate 1 is screwed into the connecting seat 3, its head will press into the first filter plate 1, so that the connecting seat 3 and the first filter plate 1 are relatively fixed.

[0036] Working principle: When the ventilation volume is changed, the motor 15 located at the housing 9 drives the gear 5 to rotate, and then drives the rack 11 to rotate, so that the first filter plate 1 rotates around the connecting seat 3, while the second filter plate 6 remains in the same position under the limit of the support plate 4. The filter holes on the two filter plates overlap after rotation, making them smaller or larger, so that the air intake volume can be changed, and the air intake volume can also be changed by changing the speed of the motor 15. When the air intake volume needs to be further changed, the electric push rod 14 contracts, driving the fan shaft 16 to slide backward, and the mounting seat 10 is fixed in position, so At this time, the blades 19 on the fan shaft 16 are taken out of the limiting groove 17. At this time, the main shaft of the motor 15 located on the mounting frame 13 rotates, which will only drive the blades 19 on the fan shaft 16 to rotate. After the blades 19 on the fan shaft 16 rotate to a certain position, the electric push rod 14 pushes the motor 15 back to its original position, driving the fan shaft 16 back to its original position. At this time, the blades 19 on the fan shaft 16 slide into the new limiting groove 17, so that the two blades 19 corresponding to the two positions are staggered. The fan with three blades can be changed into a fan with six blades, further changing the ventilation volume.

[0037] The wiring diagram of the electric push rod 14 and the motor 15 in the present invention is common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the electric push rod 14 and the motor 15 are not explained in detail.

[0038] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An automatic air volume regulating device, comprising a housing (9), characterized in that: Two support plates (4) arranged opposite to each other are fixed on the inner side of the shell (9); a second filter plate (6) and a first filter plate (1) are arranged at one shell opening of the shell (9) and are sequentially sleeved and mounted on the support plates (4); a mounting frame (13) is fixed on the inner side of the shell (9) and is fixedly mounted on the support plates (4); a motor (15) is slidably arranged at the center of the mounting frame (13); a main shaft of the motor (15) is arranged facing the first filter plate (1) and a fan shaft is fixed on the end face thereof (16), the fan shaft (16) is provided with a mounting seat (10) on the outside, and a plurality of limiting grooves (17) are evenly provided on one end of the mounting seat (10) facing the motor (15), and a plurality of blades (19) are evenly fixed on the side of the fan shaft (16) through the limiting grooves (17), and a plurality of blades (19) are also fixed on the mounting seat (10), and the positions and quantities of the blades (19) on the fan shaft (16) and the blades (19) on the mounting seat (10) correspond to each other.

2. The automatic air volume adjustment device according to claim 1, characterized in that: The end surface of the fan shaft (16) is rotatably mounted with a spring rod (18) that is arranged to penetrate the mounting seat (10), and the end surface of the mounting seat (10) is rotatably mounted with a connecting seat (3) that is fixedly sleeved with the telescopic end of the spring rod (18), and the connecting seat (3) is sleeved with the first filter plate (1) and the second filter plate (6).

3. The automatic air volume adjustment device according to claim 1, characterized in that: One side of the mounting frame (13) extends outwards and the extended end is fixedly connected to an electric push rod (14), and the telescopic end of the electric push rod (14) is fixed to the end surface of the housing of the motor (15).

4. The automatic air volume adjustment device according to claim 1, characterized in that: Slide grooves (7) are provided on both sides of the end surface of the first filter plate (1), the support plate (4) is slidably matched with the slide grooves (7), a rack (11) is fixedly connected to the side of the first filter plate (1), a protective cover (8) is fixed to the side wall of the shell (9), a motor (15) fixed to the shell (9) is arranged in the protective cover (8), and a gear (5) meshing with the rack (11) is fixed to the main shaft of the motor (15) fixed to the shell (9).

5. The automatic air volume adjustment device according to claim 1, characterized in that: There are six limiting grooves (17) and six blades (19) in total.

6. The automatic air volume adjustment device according to claim 1, characterized in that: A third filter plate (12) is fixed at the other shell opening of the housing (9), and bolts (2) are provided at the centers of the first filter plate (1) and the third filter plate (12). The bolts (2) located at the first filter plate (1) are threadedly connected to the connecting seat (3), and the bolts (2) located at the third filter plate (12) are threadedly connected to the extended end of the mounting frame (13).

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