Centrifugal blower with high stability

Abstract

The invention discloses a centrifugal blower with high stability, and relates to the technical field of centrifugal blowers, the centrifugal blower comprises a control box and a blower body, a motor is arranged in the control box, a driving shaft is arranged at the output end of the motor, a gear set is arranged on the outer wall of the driving shaft, and a lifting mechanism is arranged on one side of the gear set; a control mechanism is arranged on the outer wall of the driving shaft, and a pressing mechanism is arranged at the bottom of the control mechanism. The pressing mechanism abuts against the ground through rack and gear linkage in the lifting mechanism, supporting force is enhanced and displacement deviation is prevented when equipment is started, meanwhile, a dynamic balance system is formed through the synergistic effect of the planetary gear mechanism and the balance wheel, centrifugal force generated by high-speed rotation of the impeller is effectively counteracted, the vibration amplitude of the equipment is reduced, and the service life of the equipment is prolonged. And the operation stability is improved, and the technical problem that the centrifugal blower possibly cannot work stably due to the state of the centrifugal blower under the environment that the centrifugal blower needs to be moved frequently is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of centrifugal blowers, and particularly to a centrifugal blower with high stability. Background Art

[0002] A centrifugal blower is a fluid machine that compresses and transports gas by using the centrifugal force generated by the high-speed rotation of an impeller. It mainly consists of an impeller, a casing, a motor, and a transmission device, and has the characteristics of a wide flow range, stable outlet pressure, high efficiency, etc. It is widely used in scenarios such as sewage treatment aeration, industrial dust removal, boiler air supply, and metallurgical cooling.

[0003] The working principle of a centrifugal blower is usually that the motor drives the impeller to rotate, so that the gas at the air inlet obtains kinetic energy and is thrown towards the edge of the impeller. After being collected by the volute-shaped casing, it is converted into pressure energy and finally stably output through the exhaust port.

[0004] In the prior art, when using a centrifugal blower, it is often fixed in one position so that the centrifugal blower can work stably. However, when it is necessary to frequently move the centrifugal blower, the centrifugal blower may move due to its own working state, resulting in the inability to work stably. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a centrifugal blower with high stability to solve the technical problem that in an environment where frequent movement is required, the centrifugal blower may not be able to work stably due to its own state.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A centrifugal blower with high stability, including a control box and a blower body. A motor is arranged inside the control box. The output end of the motor is fixedly connected to a drive shaft, and the end of the drive shaft is fixedly connected to the blower body. A gear set is arranged on the outer wall of the drive shaft. A lifting mechanism is arranged on one side of the gear set. A control mechanism is arranged on the outer wall of the drive shaft. A pressing mechanism is arranged at the bottom of the control mechanism. The lifting mechanism includes a fixed shell, a rack, and a drive plate. The fixed shell is fixedly installed inside the control box through bolts. The inside of the fixed shell is movably connected to the rack. The rack and the gear set are movably connected through teeth meshing with each other. The drive plate is fixedly connected to the bottom of the rack, and the drive plate is integrally curved and the inside of the drive plate is hollow. The pressing mechanism includes a pressing disc and a clamping block. The top of the pressing disc is fixedly connected to the clamping block, and the drive plate is located between the clamping block and the pressing disc.

[0007] By adopting the above technical solutions, in the present invention, the pressing mechanism is pressed against the ground through the linkage of the rack and gear in the lifting mechanism, so as to enhance the supporting force when the equipment is started, prevent displacement deviation. At the same time, through the synergistic effect of the planetary gear mechanism and the balance wheel, a dynamic balance system is formed to effectively offset the centrifugal force generated by the high-speed rotation of the impeller, reduce the vibration amplitude of the equipment, and improve the operation stability. At the same time, under the action of the control mechanism, the rack is ensured to be stationary when the motor works, so that the pressing mechanism can always press against the ground to provide support force for the equipment. When the motor does not work, the limit can be quickly released, and through the cooperation of the sliding block and the sliding groove, the pressing mechanism and the rack can be quickly reset, which is convenient for the next use, and solves the technical problem that in an environment where it is often necessary to move, the centrifugal blower may not be able to work stably due to its own state.

[0008] Further, the lifting mechanism further includes a stopper and a clamping groove. The stopper is fixedly connected to one side of the outer part of the fixed shell. The clamping groove is opened on the outer part of the fixed shell, and the stopper is located at the bottom of the clamping groove. The lifting mechanism further includes a first sliding block, a second sliding block, a sliding groove, a limiting spring and a limiting block. The first sliding block and the second sliding block are both fixedly connected to one side of the rack, and the first sliding block is located above the second sliding block. The sliding groove is opened inside the fixed shell, and the first sliding block and the second sliding block are both located inside the sliding groove, and the rack is slidably connected to the fixed shell through the first sliding block and the second sliding block. The limiting block is slidably connected with the fixed shell, and the limiting block is elastically connected with the fixed shell through the limiting spring.

[0009] By adopting the above technical solutions, during the descending process of the rack, the first sliding block and the second sliding block on one side of it will move synchronously in the sliding groove. During the descending process of the pressing disc, the first sliding block will squeeze the limiting block, and then pass through the position where the limiting block is located. At this time, the limiting block will return to the initial position under the elastic action of the limiting spring, and at this time, the first sliding block cannot return the original way due to the limiting block.

[0010] Further, the control mechanism includes a movable shell, a connecting rod, a spring column and a positioning block. The movable shell is movably connected to the outside of the driving shaft. A connecting rod is fixedly connected to the outside of the movable shell. A spring column is fixedly connected to one side of the end of the connecting rod. A positioning block is fixedly connected to the end of the spring column, and the positioning block is elastically connected with the connecting rod through the spring column;

[0011] The control mechanism further includes a one-way bearing, a driving block, a movable block and a movable spring. The one-way bearing is fixedly connected to the outside of the driving shaft, and the one-way bearing is located between the driving shaft and the movable housing. A plurality of driving blocks are fixedly connected to the outer wall of the one-way bearing. A plurality of the movable blocks are elastically connected to the inside of the movable housing through the movable spring, and the movable blocks are in contact with the outer walls of the driving blocks. The stopper plays a role in limiting the connecting rod. The positioning block is slidably connected to the fixed housing through the engaging groove. The stopper plays a role in limiting the connecting rod. The positioning block is slidably connected to the fixed housing through the engaging groove.

[0012] By adopting the above technical solution, when the driving shaft starts to rotate, it will also drive the control mechanism to rotate. When the rotational speed of the driving shaft is relatively slow at the beginning, the driving blocks on the outer wall of the one-way bearing in the control mechanism will be in contact with the movable blocks, so that the movable housing can rotate synchronously with the driving shaft, and then the connecting rod will rotate. The connecting rod will drive the spring column and the positioning block to rotate together until the connecting rod contacts the stopper. During this process, the positioning block and the spring column will enter the engaging groove, and the positioning block will enter the sliding groove under the elastic action of the spring column, so as to prevent the second sliding block that has reached the limit position from returning the same way. At this time, the stuck second sliding block will make the rack stay in place, and then the pressing disc will always press against the ground, thus ensuring the high stability of the blower body during operation.

[0013] Further, a fixing plate is fixedly connected inside the control box. The control mechanism further includes a torsion spring. The torsion spring is located between the fixing plate and the movable housing, and the control mechanism is elastically connected to the fixing plate through the torsion spring. Both the control box and the bottom of the blower body are fixedly connected with moving bases through bolts. The pressing mechanism further includes a return spring. The pressing disc is elastically connected to the moving base through a plurality of return springs.

[0014] By adopting the above technical solution, the movable block will be in contact with the driving block again under the elastic action of the movable spring, and the movable housing will be reset under the elastic action of the torsion spring installed on the fixing plate, thereby driving the driving block and the one-way bearing to rotate in the reverse direction. Due to the special nature of the one-way bearing itself, the movable housing can idle on the driving shaft until it returns to the initial position. At the same time, the connecting rod will also drive the spring column and the positioning block to leave the engaging groove and return to the initial position. At this time, the first sliding block will be released from the restriction.

[0015] Further, a balance wheel is fixedly connected to the outer wall of the gear set. The balance wheel plays a role in stabilizing the blower body.

[0016] By adopting the above technical solution, a gear set is installed on the drive shaft. The gear set as a whole presents the state of a planetary gear mechanism. Among them, the sun gear is fixedly installed on the drive shaft, and several planetary gears are all installed on the blower body through fixed shafts, so that the positions of the planetary gears will not change. At this time, when the drive shaft drives the sun gear to rotate, the outermost ring internal gear ring will rotate in the opposite direction. The outer wall of the internal gear ring is fixedly installed with a balance wheel. At this time, the balance wheel and the impeller inside the blower body rotate in the opposite direction as a whole. Therefore, the forces generated by the two will cancel each other out, so that the blower body can be more stably located on the moving base.

[0017] To sum up, the present invention mainly has the following beneficial effects: The present invention realizes that the pressing mechanism presses against the ground through the linkage of the rack and gear in the lifting mechanism, enhances the supporting force when the equipment starts, prevents displacement deviation, and at the same time forms a dynamic balance system through the synergistic effect of the planetary gear mechanism and the balance wheel, effectively offsetting the centrifugal force generated by the high-speed rotation of the impeller, reducing the vibration amplitude of the equipment, and improving the operation stability. At the same time, under the action of the control mechanism, the rack is ensured not to move when the motor works, so that the pressing mechanism can always press against the ground to provide support for the equipment. When the motor does not work, the restriction can be quickly released, and through the cooperation of the sliding block and the sliding groove, the pressing mechanism and the rack can be quickly reset, which is convenient for the next use, solving the technical problem that the centrifugal blower may not be able to work stably due to its own state in an environment where it needs to be moved frequently. Brief Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the first perspective of the present invention;

[0019] Figure 2 It is a schematic structural diagram of the second perspective of the present invention;

[0020] Figure 3 It is a schematic structural diagram of the first perspective of some parts of the present invention;

[0021] Figure 4 It is a schematic structural diagram of the second perspective of some parts of the present invention;

[0022] Figure 5 It is a schematic structural diagram of some local parts of the present invention;

[0023] Figure 6 It is a sectional view of the control mechanism of the present invention;

[0024] Figure 7 For the present invention Figure 6 Enlarged view of part A;

[0025] Figure 8 It is a sectional view of some local parts of the present invention;

[0026] Figure 9 For the present inventionFigure 8 Enlarged view of part B;

[0027] Figure 10 This invention Figure 8 Enlarged view of part C;

[0028] In the figure: 1, control box; 2, blower body; 3, motor; 4, drive shaft; 5, gear set; 6, lifting mechanism; 601, fixed housing; 602, rack; 603, drive plate; 604, stop block; 605, engaging groove; 606, first sliding block; 607, second sliding block; 608, sliding groove; 609, limit spring; 610, limit block; 7, control mechanism; 701, movable housing; 702, torsion spring; 703, connecting rod; 704, spring post; 705, positioning block; 706, one-way bearing; 707, drive block; 708, movable block; 709, movable spring; 8, balance wheel; 9, fixed plate; 10, pressing mechanism; 1001, pressing disc; 1002, return spring; 1003, engaging block; 11, moving base. Detailed implementation mode

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0030] Next, the embodiments of the present invention will be described according to its overall structure.

[0031] A centrifugal blower with high stability, as Figure 1-10 shown, includes a control box 1 and a blower body 2. A motor 3 is arranged inside the control box 1. The output end of the motor 3 is fixedly connected to a drive shaft 4. The end of the drive shaft 4 is fixedly connected to the blower body 2. A gear set 5 is arranged on the outer wall of the drive shaft 4. A lifting mechanism 6 is arranged on one side of the gear set 5. A control mechanism 7 is arranged on the outer wall of the drive shaft 4. A pressing mechanism 10 is arranged at the bottom of the control mechanism 7;

[0032] Among them, when the motor 3 inside the control box 1 is started, its output end will cause the drive shaft 4 to rotate. The end of the drive shaft 4 is fixedly connected to the impeller inside the blower body 2. Therefore, when the drive shaft 4 rotates, the impeller inside the blower body 2 will rotate synchronously, so that air can be sucked from the air inlet of the blower body 2, and a filtering device is installed at the air inlet to filter the sucked air. The air entering the blower body 2 will be compressed by centrifugal force and then output from the air outlet of the blower body 2;

[0033] Further, the lifting mechanism 6 includes a fixed housing 601, a rack 602, and a driving plate 603. The fixed housing 601 is fixedly installed inside the control box 1 by bolts. The inside of the fixed housing 601 is movably connected to the rack 602. The rack 602 is movably connected to the gear set 5 through meshing of teeth. The driving plate 603 is fixedly connected to the bottom of the rack 602, and the driving plate 603 is integrally curved and the inside of the driving plate 603 is hollow. The pressing mechanism 10 includes a pressing disc 1001 and a clamping block 1003. The top of the pressing disc 1001 is fixedly connected to the clamping block 1003, and the driving plate 603 is located between the clamping block 1003 and the pressing disc 1001;

[0034] When the driving shaft 4 starts to rotate at the beginning, the sun gear in the gear set 5 is meshed with the rack 602 in the lifting mechanism 6 through teeth. Therefore, when the sun gear rotates, it will cause the rack 602 to move downward. A driving plate 603 is installed at the bottom of the rack 602. The driving plate 603 is integrally curved and its inside is hollow. Therefore, after the rack 602 moves downward, the driving plate 603 can synchronously move the pressing disc 1001 in the pressing mechanism 10 downward due to its own shape until the pressing disc 1001 abuts against the ground. At this time, the teeth on the rack 602 and the teeth on the sun gear will just disengage;

[0035] In the example, the lifting mechanism 6 further includes a stop block 604 and a clamping groove 605. The stop block 604 is fixedly connected to one side of the outside of the fixed housing 601. The clamping groove 605 is opened on the outside of the fixed housing 601, and the stop block 604 is located at the bottom of the clamping groove 605. The lifting mechanism 6 further includes a first sliding block 606, a second sliding block 607, a sliding groove 608, a limiting spring 609, and a limiting block 610. The first sliding block 606 and the second sliding block 607 are both fixedly connected to one side of the rack 602, and the first sliding block 606 is located above the second sliding block 607. The sliding groove 608 is opened inside the fixed housing 601, and the first sliding block 606 and the second sliding block 607 are both located inside the sliding groove 608. The rack 602 is slidably connected to the fixed housing 601 through the first sliding block 606 and the second sliding block 607. The limiting block 610 is slidably connected to the fixed housing 601, and the limiting block 610 is elastically connected to the fixed housing 601 through the limiting spring 609. The stop block 604 functions to limit the connecting rod 703. The positioning block 705 is slidably connected to the fixed housing 601 through the clamping groove 605;

[0036] During the downward movement of the rack 602, the first sliding block 606 and the second sliding block 607 on one side thereof will move synchronously in the sliding groove 608. During the downward movement of the pressing disc 1001, the first sliding block 606 will squeeze the limiting block 610, and then pass through the position where the limiting block 610 is located. At this time, the limiting block 610 will return to its initial position under the elastic action of the limiting spring 609. However, due to the relationship with the limiting block 610, the first sliding block 606 cannot return along the original path;

[0037] In the example, the control mechanism 7 includes a movable housing 701, a connecting rod 703, a spring column 704, and a positioning block 705. The movable housing 701 is movably connected to the outside of the drive shaft 4. A connecting rod 703 is fixedly connected to the outside of the movable housing 701. One side of the end of the connecting rod 703 is fixedly connected to a spring column 704. The end of the spring column 704 is fixedly connected to a positioning block 705, and the positioning block 705 is elastically connected to the connecting rod 703 through the spring column 704;

[0038] Furthermore, the control mechanism 7 further includes a one-way bearing 706, a driving block 707, a movable block 708, and a movable spring 709. The one-way bearing 706 is fixedly connected to the outside of the drive shaft 4, and the one-way bearing 706 is located between the drive shaft 4 and the movable housing 701. A plurality of groups of driving blocks 707 are fixedly connected to the outer wall of the one-way bearing 706. A plurality of groups of movable blocks 708 are elastically connected to the inside of the movable housing 701 through the movable spring 709, and the outer walls of the movable blocks 708 are in contact with the driving blocks 707. Both the control box 1 and the bottom of the blower body 2 are fixedly connected with a moving base 11 through bolts. The pressing mechanism 10 further includes a return spring 1002, and the pressing disc 1001 is elastically connected to the moving base 11 through a plurality of groups of return springs 1002;

[0039] When the drive shaft 4 starts to rotate at first, it will also drive the control mechanism 7 to rotate. When the rotational speed of the drive shaft 4 is relatively slow at the beginning, the driving block 707 on the outer wall of the one-way bearing 706 in the control mechanism 7 will be in contact with the movable block 708, so that the movable housing 701 can rotate synchronously with the drive shaft 4, and then the connecting rod 703 will rotate. The connecting rod 703 will drive the spring column 704 and the positioning block 705 to rotate together until the connecting rod 703 contacts the stop block 604. During this process, the positioning block 705 and the spring column 704 will enter the engaging groove 605, and the positioning block 705 will enter the sliding groove 608 under the elastic action of the spring column 704, so as to block the second sliding block 607 that has reached the limit position from returning along the original path. At this time, the stuck second sliding block 607 will cause the rack 602 to stay in place, and then the pressing disc 1001 will always press against the ground, thus ensuring the high stability of the blower body 2 during operation;

[0040] In the example, a fixed plate 9 is fixedly connected inside the control box 1. The control mechanism 7 further includes a torsion spring 702. The torsion spring 702 is located between the fixed plate 9 and the movable shell 701, and the control mechanism 7 is elastically connected to the fixed plate 9 through the torsion spring 702;

[0041] Among them, the movable block 708 will fit with the driving block 707 again under the elastic action of the movable spring 709, and the movable shell 701 will be reset under the elastic action of the torsion spring 702 installed on the fixed plate 9, thereby driving the driving block 707 and the one-way bearing 706 to rotate in the reverse direction. Due to the special nature of the one-way bearing 706 itself, the movable shell 701 can idle on the driving shaft 4 until it returns to the initial position. At the same time, the connecting rod 703 will also drive the spring column 704 and the positioning block 705 to leave the engaging groove 605 and return to the initial position. At this time, the first sliding block 606 will be in contact with the limit;

[0042] In the example, a balance wheel 8 is fixedly connected to the outer wall of the gear set 5. The balance wheel 8 plays a role in stabilizing the blower body 2. The gear set 5 as a whole presents the state of a planetary gear mechanism, and the sun gear among them is fixedly installed on the driving shaft 4, and several planetary gears are all installed on the blower body 2 through fixed shafts, so that the positions of the planetary gears will not change. At this time, when the driving shaft 4 drives the sun gear to rotate, the outermost inner gear ring will rotate in the reverse direction, and the balance wheel 8 is fixedly installed on the outer wall of the inner gear ring. At this time, the balance wheel 8 and the impeller inside the blower body 2 rotate in the reverse direction as a whole. Therefore, the forces generated by the two will cancel each other out, so that the blower body 2 can be more stably located on the moving base 11.

[0043] The working principle of the present invention is as follows: When in use, first, the user pushes the moving base 11. A plurality of universal wheels are installed at the bottom of the moving base 11. Therefore, the user can move the positions of the control box 1 and the blower body 2 through the moving base 11;

[0044] After moving the blower body 2 to the position where it needs to be used, at this time, by starting the motor 3 inside the control box 1, the motor 3 starts, and its output end will cause the driving shaft 4 to rotate. The end of the driving shaft 4 is fixedly connected to the impeller inside the blower body 2. Therefore, when the driving shaft 4 rotates, the impeller inside the blower body 2 will rotate synchronously, so that air can be sucked from the air inlet of the blower body 2, and a filtering device is installed at the air inlet to filter the sucked air. The air entering the blower body 2 will be compressed by centrifugal force and then output from the air outlet of the blower body 2;

[0045] When the impeller rotates inside the blower body 2, it is inevitable that the centrifugal force generated by its own rotation will make the blower body 2 unstable. Therefore, on one side outside the blower body 2, a gear set 5 is installed on the drive shaft 4. The gear set 5 as a whole presents the state of a planetary gear mechanism, and the sun gear among them is fixedly installed on the drive shaft 4, while several planetary gears are all installed on the blower body 2 through fixed shafts, so that the positions of the planetary gears will not change. At this time, when the drive shaft 4 drives the sun gear to rotate, the outermost inner gear ring will rotate in the opposite direction, and a balance wheel 8 is fixedly installed on the outer wall of the inner gear ring;

[0046] At this time, the balance wheel 8 and the impeller inside the blower body 2 rotate in the opposite direction as a whole. Therefore, the forces generated by the two will cancel each other out, so that the blower body 2 can be more stably located on the moving base 11;

[0047] When the drive shaft 4 starts to rotate at the beginning, the sun gear in the gear set 5 is meshed and connected with the rack 602 in the lifting mechanism 6 through teeth. Therefore, when the sun gear rotates, it will make the rack 602 move downward, and a drive plate 603 is installed at the bottom of the rack 602. The drive plate 603 is bent as a whole and is hollow inside;

[0048] Therefore, after the rack 602 moves downward, due to its own shape, the drive plate 603 can make the pressing disc 1001 in the pressing mechanism 10 move downward synchronously until the pressing disc 1001 abuts against the ground. At this time, the teeth on the rack 602 and the teeth on the sun gear will just disengage;

[0049] During the downward movement of the rack 602, the first sliding block 606 and the second sliding block 607 on one side of it will move synchronously in the sliding groove 608. When the first sliding block 606 descends during the descent of the pressing disc 1001, it will squeeze the limiting block 610, and then pass through the position where the limiting block 610 is located. At this time, the limiting block 610 will return to its initial position under the elastic action of the limiting spring 609, and at this time, the first sliding block 606 cannot return the same way due to the relationship of the limiting block 610;

[0050] When the drive shaft 4 starts to rotate at the beginning, it will also drive the control mechanism 7 to rotate. When the rotational speed of the drive shaft 4 is relatively slow at the beginning, the driving block 707 on the outer wall of the one-way bearing 706 in the control mechanism 7 will be in contact with the movable block 708, so that the movable housing 701 can rotate synchronously with the drive shaft 4, and then the connecting rod 703 rotates;

[0051] The connecting rod 703 will rotate together with the spring post 704 and the positioning block 705 until the connecting rod 703 contacts the stopper 604. During this process, the positioning block 705 and the spring post 704 will enter the engaging groove 605, and the positioning block 705 will enter the sliding groove 608 under the elastic action of the spring post 704, so as to prevent the second sliding block 607 that has reached the limit position from returning along the original path. At this time, the stuck second sliding block 607 will make the rack 602 stay in place, and then the pressing disc 1001 will always press against the ground, thus ensuring the high stability of the blower body 2 during operation;

[0052] After the connecting rod 703 contacts the stopper 604, the one-way bearing 706 will continue to rotate with the driving block 707, while the movable block 708 will stay in place under the influence of the movable housing 701, and then be squeezed by the driving block 707, so that the movable block 708 further squeezes the movable spring 709, thereby enabling the driving block 707 to break away from the restriction of the movable block 708, and then enabling the one-way bearing 706 to rotate idly inside the movable housing 701 under the rotation of the driving shaft 4, thus ensuring that the positioning block 705 always stays inside the sliding groove 608;

[0053] When the blower body 2 is used up, the motor 3 will stop working, and the driving shaft 4 will also stop rotating. At this time, the movable block 708 will fit with the driving block 707 again under the elastic action of the movable spring 709, and the movable housing 701 will be reset under the elastic action of the torsion spring 702 installed on the fixed plate 9, thereby driving the driving block 707 and the one-way bearing 706 to rotate in the reverse direction. Due to the special nature of the one-way bearing 706 itself, the movable housing 701 can rotate idly on the driving shaft 4 until it returns to the initial position;

[0054] At the same time, the connecting rod 703 will also drive the spring post 704 and the positioning block 705 to leave the engaging groove 605 and return to the initial position. At this time, the first sliding block 606 will be released from the restriction, and the pressing disc 1001 will rise under the action of multiple reset springs 1002, and through the cooperation of the engaging block 1003 and the driving plate 603, the rack will rise;

[0055] Due to the existence of the limit block 610, the first sliding block 606 will return to the initial position along another path of the sliding groove 608, and under the trajectory of the sliding groove 608, since the rack 602 is disengaged from the teeth of the gear set 5 at this time, the rack 602 will not contact the gear set 5 during the rising process until the first sliding block 606 returns to the initial position, and then the rack 602 will mesh with the gear set 5 again. At this time, the pressing mechanism 10 will also return to the initial position, which is convenient for the user to move the blower body 2 again;

[0056] Through the above structure, the technical problem that the centrifugal blower cannot work stably due to its own state in an environment that often needs to be moved can be solved.

[0057] Although the embodiments of the present invention have been shown and described, the specific embodiments are only explanations of the present invention and are not limitations thereof. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions and variations that do not contribute creatively to the embodiments according to needs, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A centrifugal blower with high stability, comprising a control box (1) and a blower body (2), characterized in that: Inside the control box (1), there is a motor (3) installed. The output end of the motor (3) is fixedly connected to a drive shaft (4). The end of the drive shaft (4) is fixedly connected to the blower body (2). A gear set (5) is arranged on the outer wall of the drive shaft (4). On one side of the gear set (5), there is a lifting mechanism (6). A control mechanism (7) is arranged on the outer wall of the drive shaft (4). At the bottom of the control mechanism (7), there is a pressing mechanism (10). The lifting mechanism (6) includes a fixed shell (601), a rack (602), and a drive plate (603). The fixed shell (601) is fixedly installed inside the control box (1) by bolts. The inside of the fixed shell (601) is movably connected to the rack (602). The rack (602) and the gear set (5) are movably connected by meshing with each other through teeth. The drive plate (603) is fixedly connected to the bottom of the rack (602), and the drive plate (603) is integrally curved, and the inside of the drive plate (603) is in a hollow state. The pressing mechanism (10) includes a pressing disc (1001) and a clamping block (1003). The top of the pressing disc (1001) is fixedly connected to the clamping block (1003), and the drive plate (603) is located between the clamping block (1003) and the pressing disc (1001).

2. The centrifugal blower with high stability according to claim 1, characterized in that: The lifting mechanism (6) further includes a stop block (604) and a clamping groove (605). The stop block (604) is fixedly connected to the outside of one side of the fixed shell (601). The clamping groove (605) is opened on the outside of the fixed shell (601), and the stop block (604) is located at the bottom of the clamping groove (605).

3. The centrifugal blower with high stability according to claim 1, wherein: The lifting mechanism (6) further includes a first sliding block (606), a second sliding block (607), a sliding groove (608), a limiting spring (609), and a limiting block (610). The first sliding block (606) and the second sliding block (607) are both fixedly connected to one side of the rack (602), and the first sliding block (606) is located above the second sliding block (607). The sliding groove (608) is opened inside the fixed shell (601), and the first sliding block (606) and the second sliding block (607) are both located inside the sliding groove (608), and the rack (602) is slidably connected to the fixed shell (601) through the first sliding block (606) and the second sliding block (607). The limiting block (610) is slidably connected to the fixed shell (601), and the limiting block (610) is elastically connected to the fixed shell (601) through the limiting spring (609).

4. The centrifugal blower with high stability according to claim 1, wherein: The control mechanism (7) includes a movable shell (701), a connecting rod (703), a spring column (704), and a positioning block (705). The movable shell (701) is movably connected to the outside of the drive shaft (4). A connecting rod (703) is fixedly connected to the outside of the movable shell (701). On one side of the end of the connecting rod (703), a spring column (704) is fixedly connected. The end of the spring column (704) is fixedly connected to a positioning block (705), and the positioning block (705) is elastically connected to the connecting rod (703) through the spring column (704).

5. The centrifugal blower with high stability according to claim 4, characterized in that: The control mechanism (7) further includes a one-way bearing (706), a driving block (707), a movable block (708) and a movable spring (709). The one-way bearing (706) is fixedly connected to the outside of the driving shaft (4), and the one-way bearing (706) is located between the driving shaft (4) and the movable housing (701). A plurality of groups of driving blocks (707) are fixedly connected to the outer wall of the one-way bearing (706). A plurality of the movable blocks (708) are elastically connected to the inside of the movable housing (701) through the movable spring (709), and the outer walls of the movable blocks (708) are in contact with the outer walls of the driving blocks (707).

6. The centrifugal blower with high stability according to claim 4, wherein: A fixing plate (9) is fixedly connected inside the control box (1). The control mechanism (7) further includes a torsion spring (702). The torsion spring (702) is located between the fixing plate (9) and the movable housing (701), and the control mechanism (7) is elastically connected to the fixing plate (9) through the torsion spring (702).

7. The centrifugal blower with high stability according to claim 1, characterized in that: Moving bases (11) are fixedly connected to the bottoms of the control box (1) and the blower body (2) by bolts. The pressing mechanism (10) further includes a return spring (1002). The pressing plate (1001) is elastically connected to the moving base (11) through a plurality of return springs (1002).

8. The centrifugal blower with high stability according to claim 4, characterized in that: A balance wheel (8) is fixedly connected to the outer wall of the gear set (5). The balance wheel (8) functions to stabilize the blower body (2).

9. The centrifugal blower with high stability according to claim 4, wherein: The stop block (604) functions to limit the connecting rod (703). The positioning block (705) is slidably connected to the fixed housing (601) through the engaging groove (605).

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