Negative pressure structure of dust collection device

Abstract

The invention relates to a negative pressure structure of a dust collection device, the negative pressure structure of the dust collection device comprises a main body, a dust collection motor, a first connecting pipe, a second connecting pipe and a switching mechanism, an air duct is formed in the main body, the dust collection motor is arranged on the main body and is used for providing air to the air duct, and the switching mechanism is arranged on the main body. One end of the air duct is a first end part, and the other end is a second end part; the first connecting pipe and the second connecting pipe are both arranged on the main body, the switching mechanism is arranged on the main body, the first connecting pipe is communicated with a first end part of the air duct through the switching mechanism, and the second connecting pipe is communicated with a second end part of the air duct through the switching mechanism; under the action of the switching mechanism, the first connecting pipe can communicate with the second end of the air duct, and the second connecting pipe can communicate with the first end of the air duct. The method has the effect of improving the overall use efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of dust collecting devices, and in particular to a negative pressure structure of a dust collecting device. Background Art

[0002] When using products such as sweepers and vacuum cleaners, it is necessary to use the suction port to collect impurities.

[0003] When a vacuum cleaner is used for dust removal, dust and debris are attracted by the suction generated by the operation of the vacuum cleaner motor. When the air flowing in through the vacuum cleaner air inlet passes through the filter, the dust and debris have a certain stickiness, which will cause the dust to adhere to the filter. The dust will accumulate more and more, resulting in the air intake of the suction generated by the vacuum cleaner motor being blocked and the suction force being reduced.

[0004] Currently, the method for cleaning the filter in a vacuum cleaner is to turn off the vacuum cleaner, remove the filter to clean the dust on it, then install the filter, and then turn on the machine for use; each cleaning requires action, resulting in low overall efficiency. Summary of the invention

[0005] In order to improve the overall use efficiency, the present application provides a negative pressure structure of a dust collection device.

[0006] The present application provides a negative pressure structure of a dust collection device, which adopts the following technical solution: A negative pressure structure of a dust suction device comprises a main body, a dust suction motor, a first connecting pipe, a second connecting pipe and a switching mechanism, wherein an air duct is formed on the main body, the dust suction motor is arranged on the main body and is used for providing air to the air duct, one end of the air duct is a first end and the other end is a second end; the first connecting pipe and the second connecting pipe are both arranged on the main body, the switching mechanism is arranged on the main body, and the first connecting pipe is connected to the first end of the air duct through the switching mechanism, and the second connecting pipe is connected to the second end of the air duct through the switching mechanism; under the action of the switching mechanism, the first connecting pipe can be connected to the second end of the air duct, and the second connecting pipe can be connected to the first end of the air duct.

[0007] By adopting the above technical solution, when the vacuum cleaner is to perform vacuuming operation, the vacuum motor is started, and air enters the first end of the air duct through the first connecting pipe, then enters the second connecting pipe through the second end of the air duct, and is finally discharged through the second connecting pipe; when the vacuum cleaner is not to perform vacuuming operation, the vacuum motor is started, and under the action of the switching mechanism, air enters the first end of the air duct through the second connecting pipe, and then enters the first connecting pipe through the second end of the air duct, and the air flowing out of the first connecting pipe will be blown onto the filter or screen in the vacuum cleaner, blowing off the dust adhering to the filter or screen, thereby reducing the clogging of the filter or screen; after a certain time period, such as after an interval of one week, the filter or screen of the vacuum cleaner is disassembled for cleaning, and it is not necessary to disassemble and clean it after each use; therefore, the negative pressure structure provided can reduce the frequency of disassembly of the filter or screen, thereby improving the overall use efficiency.

[0008] Optionally, the main body includes a first assembly block, a second assembly block, a third assembly block, a fourth assembly block, a first connecting block and a limiting block, the second assembly block is arranged on the first assembly block, the first connecting block is arranged on the second assembly block, the limiting block is arranged on the first connecting block, a first cavity is opened on the limiting block, a second cavity is formed between the limiting block and the first assembly block, a third cavity is formed between the limiting block and the second assembly block, and the first cavity, the second cavity and the third cavity together form the air duct; the end of the first cavity away from the first assembly block is the first end of the air duct, and the end of the third cavity away from the first assembly block is the air duct the second end of the vacuum cleaner; the dust suction motor is arranged on the first assembly block, and one end of the dust suction motor away from the first assembly block is located in the first cavity of the limiting block; the third assembly block is arranged on the first assembly block, and the switching mechanism is arranged on the third assembly block; the fourth assembly block is arranged on the third assembly block, the first connecting pipe and the second connecting pipe are both arranged on the fourth assembly block, and the fourth assembly block is provided with a fourth cavity connected to the first connecting pipe and a fifth cavity connected to the second connecting pipe, the fourth cavity is connected to the first end of the air duct through the switching mechanism, and the fifth cavity is connected to the second end of the air duct through the switching mechanism.

[0009] Optionally, the switching mechanism includes a partition block, a mounting block, a first rotating shaft, a blocking plate and a toggle block, the third assembly block is provided with a first groove, the partition block is arranged on the third assembly block and is located in the first groove, the partition block divides the first groove into a first air cavity and a second air cavity, the third assembly block is provided with a first through hole communicating with the first air cavity, and the first cavity is communicated with the first through hole; the third assembly block is provided with a second through hole communicating with the second air cavity, and the third cavity is communicated with the second through hole; the mounting block is arranged on the partition block, and the first rotating shaft is rotatably arranged on the mounting block; The third assembly block is provided with a second groove connected with the first groove, the sealing plate is arranged on the first rotating shaft, and the sealing plate is located in the second groove; the sealing plate is provided with a third through hole and a fourth through hole, when the third through hole is connected with the first air cavity, the fourth through hole is connected with the second air cavity; when the third through hole is always connected with the fourth cavity, the fourth through hole is always connected with the fifth cavity; the third assembly block is provided with a fifth through hole connected with the second groove, the toggle block is arranged on the sealing plate, and the end of the toggle block away from the sealing plate passes through the fifth through hole.

[0010] By adopting the above technical solution, when the vacuum cleaner is performing a vacuuming operation, the third through hole on the sealing plate is connected to the first air cavity on the third assembly block, and the fourth through hole is connected to the second air cavity; in this way, when the vacuum cleaner is performing a vacuuming operation, the gas from the vacuum cleaner enters the fourth cavity through the first connecting pipe, then enters the first air cavity through the third through hole on the sealing plate, then enters the first end of the air duct through the first through hole, then enters the second air cavity through the second end of the air duct and the second through hole, then enters the second connecting pipe through the fourth through hole on the sealing plate, and finally is discharged through the second connecting pipe; when it is necessary to clean the filter area or the filter screen, Rotate the toggle block, and the toggle block drives the sealing plate to rotate, so that the third through hole on the sealing plate is connected to the second air cavity on the third assembly block, and the fourth through hole is connected to the first air cavity; because the fourth through hole is always connected to the fifth cavity, and the third through hole is always connected to the fourth cavity, the gas in the air enters the fifth cavity through the second connecting pipe, and then enters the first air cavity through the fourth through hole on the sealing plate, and then enters the first end of the air duct through the first through hole, and then enters the second air cavity through the second end of the air duct and the second through hole, and then enters the first connecting pipe through the third through hole and the fourth cavity on the sealing plate, and finally enters the dust collection equipment to clean the filter or filter screen.

[0011] Optionally, a protective mechanism is provided on the third assembly block, and the protective mechanism includes a fixed block and a protective net, the fixed block is provided on the third assembly block, and the fourth assembly block is provided on the fixed block; a sixth through hole and a seventh through hole are provided on the fixed block, the sixth through hole is connected to the fourth cavity, and the seventh through hole is connected to the fifth cavity; when the third through hole is connected to the sixth through hole, the fourth through hole is connected to the seventh through hole; the protective net is provided on the fixed block, and the protective net can cover the sixth through hole and the seventh through hole.

[0012] By adopting the above technical solution, the provided protection net can reduce the entry of impurities into the first air cavity and the second air cavity of the third assembly block.

[0013] Optionally, a shaking mechanism is provided on the fixed block, and the shaking mechanism includes a support block, a second rotating shaft, a shaking block, a torsion spring and an adjusting assembly. There are multiple support blocks, and the multiple support blocks are all provided on the fixed block; the second rotating shaft is rotatably provided on the support block, the shaking block is provided on the second rotating shaft, and the shaking block can contact the protective net; the torsion spring is sleeved on the second rotating shaft, one end of the torsion spring is connected to the support block and the other end is connected to the shaking block; the adjusting assembly is provided on the fixed block and connected to the shaking block.

[0014] By adopting the above technical solution, under the action of the adjusting component, the second rotating shaft will drive the shaking block to rotate, and the shaking block will hit the protective net, thereby reducing the phenomenon of dust blocking the protective net.

[0015] Optionally, a second connecting block is provided on the fixed block, and a plurality of the supporting blocks are all provided on the second connecting block; the adjusting assembly comprises a first adjusting block, a second adjusting block, a third adjusting block, a fourth adjusting block, a fifth adjusting block, a third connecting block, a fourth connecting block, a first screw rod, a telescopic rod and an airbag block, the first adjusting block being provided on the shaking block; the third connecting block being provided on the second connecting block, an arc groove being provided on the third connecting block, and the second adjusting block being slidably provided in the arc groove; the third adjusting block being provided on the second adjusting block, the fourth adjusting block being provided on the third adjusting block, and the fourth adjusting block being able to contact the first adjusting block; the fourth connecting block being provided on the second connecting block, and the first screw rod being provided on the fourth connecting block; the fifth adjusting block being threadedly connected to the first screw rod, one end of the telescopic rod being connected to the fifth adjusting block and the other end being connected to the second adjusting block; the airbag block being provided on the fourth adjusting block.

[0016] By adopting the above technical solution, the cavity drives the airbag block to move, the airbag block drives the fifth adjusting block to move, the fifth adjusting block will rotate relative to the first screw rod, the rotating fifth adjusting block drives the second adjusting block to slide in the arc groove of the third connecting block through the telescopic rod, the third adjusting block on the second adjusting block drives the fourth adjusting block to move, the fourth adjusting block will squeeze the first adjusting block to drive the first adjusting block to move, and the first adjusting block will drive the shaking block to move.

[0017] Optionally, a lifting mechanism is provided on the fixed block, and the lifting mechanism includes a lifting block, a second screw rod, an adjusting gear and a gear ring; the lifting block is arranged on the second connecting block and is slidably arranged on the fixed block; the second screw rod is rotatably arranged on the fixed block, the second screw rod passes through the lifting block and is threadedly connected to the lifting block; the adjusting gear key is connected to the second screw rod; the gear ring is arranged on the sealing plate and meshes with the adjusting gear.

[0018] By adopting the above technical solution, when the toggle block drives the blocking plate to rotate, the gear ring on the blocking plate drives the adjusting gear to rotate, the adjusting gear drives the second screw rod to rotate, the second screw rod drives the lifting block to move, and the lifting block will drive the second connecting block to move.

[0019] Optionally, an eighth through hole is provided on the third connecting block, a ninth through hole connected to the eighth through hole is provided on the second connecting block, an adjustment mechanism is provided on the third adjusting block, and the adjustment mechanism includes a first adjusting block, a second adjusting block, a first limiting block and a second limiting block, the first adjusting block is provided on the second adjusting block, an end of the first adjusting block away from the second adjusting block passes through the eighth through hole and is located in the ninth through hole; the second adjusting block is slidably provided on the first adjusting block, the first limiting block and the second limiting block are both provided on the second adjusting block, and the first limiting block is located between the second limiting block and the The first and second adjustment blocks are provided on the fixed block; a first slide groove, a second slide groove connected to the first slide groove, and a third slide groove connected to the second slide groove are provided on the fixed block, the third slide groove is connected to the first slide groove, the first limiting block is slidably connected in the first slide groove, and the first limiting block can move in the second and third slide grooves; a limiting cavity is provided on the fixed block, the first slide groove, the second slide groove and the third slide groove are all connected to the limiting cavity, the second limiting block is located in the limiting cavity, and when the first limiting block is located in the second and third slide grooves, the second limiting block contacts the side wall of the limiting cavity.

[0020] By adopting the above technical solution, when the lifting block drives the second connecting block to move, under the action of the first slide groove, the first adjustment block will slide in the eighth through hole and the ninth through hole, and the first adjustment block drives the second adjustment block to slide in the arc groove, and at this time the first limiting block is located in the first slide groove; when the second adjustment block is located at the end of one end of the third connecting block, the first limiting block moves from the first slide groove to the second slide groove, and at this time the second limiting block contacts the side wall of the limiting cavity; when the telescopic rod drives the second adjusting block to move, the first limiting block slides in the second slide groove. When the first limiting block moves from the second slide groove to the third slide groove, the second limiting block also keeps contacting the side wall of the limiting cavity; when the limiting block enters the first slide groove from the third slide groove, the second limiting block no longer contacts the side wall of the limiting cavity.

[0021] In summary, the present application includes the following beneficial technical effects: the provided negative pressure structure can reduce the frequency of disassembly of the filter or screen, thereby improving the overall utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the negative pressure structure of the dust collection device in the embodiment of the present application; Figure 2 This is a schematic diagram of the structure of the main body in the embodiment of the present application; Figure 3 This is a schematic diagram of the structure of the air duct in the embodiment of the present application; Figure 4 This is a schematic diagram of the structure of the second assembly block in the embodiment of the present application; Figure 5 This is a schematic diagram of the structure of the switching mechanism in the embodiment of the present application; Figure 6 This is a schematic diagram of the structure of the protection mechanism in the embodiment of the present application; Figure 7 This is a structural schematic diagram of the lifting mechanism in the embodiment of the present application; Figure 8 This is a schematic diagram of the structure of the shaking mechanism in the embodiment of the present application; Fig. 9 This is a schematic diagram of the structure of the adjustment component in the embodiment of the present application; Fig.10 This is a structural schematic diagram of the adjustment mechanism in the embodiment of the present application; Fig.11 It is a schematic diagram of the structure of the first slide groove in the embodiment of the present application.

[0023] Reference numerals: 1, main body; 11, first assembly block; 12, second assembly block; 13, third assembly block; 131, first air cavity; 132, second air cavity; 133, first through hole; 134, second through hole; 135, second groove; 136, fifth through hole; 137, placement cavity; 14, fourth assembly block; 141, fourth cavity; 142, fifth cavity; 15, first connecting block; 16, limiting block; 17 , air duct; 171, first cavity; 172, second cavity; 173, third cavity; 2, vacuum motor; 31, first connecting pipe; 32, second connecting pipe; 4, switching mechanism; 41, partition block; 42, mounting block; 43, first rotating shaft; 44, blocking plate; 441, third through hole; 442, fourth through hole; 45, toggle block; 5, protection mechanism; 51, fixing block; 511, sixth through hole; 512, first Seven through holes; 513, first slide; 514, second slide; 515, third slide; 516, limiting cavity; 517, fourth slide; 52, protective net; 6, shaking mechanism; 61, support block; 62, second shaft; 63, shaking block; 64, torsion spring; 65, second connecting block; 651, ninth through hole; 71, first adjusting block; 72, second adjusting block; 73, third adjusting block; 74, fourth adjusting block; 7 5. Fifth adjusting block; 76. Third connecting block; 761. Arc groove; 762. Eighth through hole; 77. Fourth connecting block; 78. First screw rod; 79. Telescopic rod; 710. Airbag block; 8. Lifting mechanism; 81. Lifting block; 82. Second screw rod; 83. Adjusting gear; 84. Ring gear; 9. Adjusting mechanism; 91. First adjusting block; 92. Second adjusting block; 93. First limiting block; 94. Second limiting block. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-11 This application is described in further detail.

[0025] The embodiment of the present application discloses a negative pressure structure of a dust collection device.

[0026] refer to Figure 1 and Figure 2 A negative pressure structure of a dust collecting device comprises a main body 1 on which a switching mechanism 4 is arranged.

[0027] refer to Figure 2 , Figure 3 and Figure 4The main body 1 includes a first assembly block 11 in a round cake shape, a second assembly block 12 is fixedly connected to the first assembly block 11, the second assembly block 12 is in a circular ring shape, a first connecting block 15 is fixedly connected to the inner side wall of the second assembly block 12, a plurality of first connecting blocks 15 are provided, and the plurality of first connecting blocks 15 are evenly arranged along the circumference of the inner side wall of the second assembly block 12; a limiting block 16 is fixedly connected to one end of the first connecting block 15 away from the inner side wall of the second assembly block 12. A first cavity 171 is provided on the limiting block 16, and a second cavity 172 connected to the first cavity 171 is formed between the limiting block 16 and the first assembly block 11; a third cavity 173 connected to the second cavity 172 is formed between the limiting block 16 and the second assembly block 12, and the first cavity 171, the second cavity 172 and the third cavity 173 together form an air duct 17, and the end of the first cavity 171 away from the first assembly block 11 is the first end of the air duct 17, and the end of the third cavity 173 away from the first assembly block 11 is the second end of the air duct 17.

[0028] refer to Figure 3 and Figure 5 , the end of the second assembly block 12 away from the first assembly block 11 is connected to the third assembly block 13, and the side of the third assembly block 13 away from the second assembly block 12 is provided with a first groove. The third assembly block 13 is provided with a switching mechanism 4, and the switching mechanism 4 includes a partition block 41 integrally provided on the third assembly block 13, and the partition block 41 is located in the first groove and divides the first groove into a first air cavity 131 and a second air cavity 132; the third assembly block 13 is provided with a first through hole 133 connected to the first air cavity 131, and the first through hole 133 on the third assembly block 13 is connected to the first cavity 171 on the second assembly block 12, that is, connected to the first end of the air duct 17; the third assembly block 13 is provided with a second through hole 134 connected to the second air cavity 132, and the third assembly block 13 is provided with a third cavity 173 on the second assembly block 12, that is, connected to the second end of the air duct 17.

[0029] A mounting block 42 is integrally provided on the partition block 41, and a blocking plate 44 is rotatably connected to the mounting block 42; a second groove 135 is provided at one end of the third assembly block 13 away from the second assembly block 12, and the blocking plate 44 is rotatably set in the second groove 135; a third through hole 441 and a fourth through hole 442 are provided on the blocking plate 44, and when the third through hole 441 on the blocking plate 44 is connected to the first air cavity 131 on the third assembly block 13, the fourth through hole 442 on the blocking plate 44 is connected to the second air cavity 132 on the third assembly block 13.

[0030] The third assembly block 13 is provided with a fifth through hole 136 connected to the second groove 135 . A toggle block 45 is integrally provided on the peripheral side wall of the blocking plate 44 . One end of the toggle block 45 away from the blocking plate 44 passes through the fifth through hole 136 and is located outside the third assembly block 13 .

[0031] refer to Figure 2 , Figure 3 and Figure 5 A placement groove connected to the first through hole 133 is opened on one side of the third assembly block 13 close to the second assembly block 12, and an end of the limiting block 16 away from the first assembly block 11 can abut against an end of the third assembly block 13 close to the second assembly block 12.

[0032] The dust motor 2 is mounted on the first assembly block 11 , and one end of the dust motor 2 away from the first assembly block 11 , namely, the impeller of the dust motor 2 passes through the first cavity 171 on the limiting block 16 and is located in the placement cavity 137 of the third assembly block 13 .

[0033] refer to Figure 2 and Figure 6 The end of the third assembly block 13 away from the second assembly block 12 is provided with a protective mechanism 5, which includes a fixed block 51 connected to the third assembly block 13, and a sixth through hole 511 and a seventh through hole 512 are provided on the fixed block 51. The third through hole 441 on the blocking plate 44 is always connected to the sixth through hole 511 on the fixed block 51, and the fourth through hole 442 on the blocking plate 44 is always connected to the seventh through hole 512 on the fixed block 51. The fixed block 51 is connected to a flexible protective net 52. In this embodiment, two protective nets 52 are provided, one of which covers the sixth through hole 511, and the other covers the seventh through hole 512; the mesh number of the protective net 52 is 400. In other embodiments, there can be only one protective net 52, and this protective net 52 covers the sixth through hole 511 and the seventh through hole 512.

[0034] refer to Figure 2 , Figure 6 and Figure 7 , a fourth slide groove 517 is provided on the side wall of the seventh through hole 512, an adjustment cavity connected to the fourth slide groove 517 is provided on the fixed block 51, and the adjustment cavity is connected to the second groove 135 on the third assembly block 13. A lifting mechanism 8 is provided on the fixed block 51, and the lifting mechanism 8 includes a lifting block 81 slidably connected in the fourth slide groove 517, a second screw rod 82 is rotatably connected in the adjustment cavity, the second screw rod 82 passes through the lifting block 81 and is threadedly connected to the lifting block 81, an end of the first screw rod 78 close to the third assembly block 13 is keyed to an adjustment gear 83, and a gear ring 84 meshing with the adjustment gear 83 is fixedly connected to the blocking plate 44.

[0035] When the toggle block 45 drives the blocking plate 44 to rotate, the blocking plate 44 drives the ring gear 84 to rotate, the ring gear 84 drives the adjusting gear 83 to rotate, the adjusting gear 83 drives the second screw rod 82 to rotate, and the second screw rod 82 drives the lifting block 81 to slide in the fourth sliding groove 517.

[0036] refer to Figure 6 , Figure 8 and Fig. 9 The lifting block 81 is provided with a shaking mechanism 6, which includes a second connecting block 65 fixedly connected to the lifting block 81, and the second connecting block 65 is slidably connected in the sixth through hole 511; the cross section of the second connecting block 65 is circular.

[0037] The second connecting block 65 is provided with an adjustment assembly, which includes a third connecting block 76 fixedly connected to the second connecting block 65, and the third connecting block 76 is fixedly connected to a plurality of mounting blocks 42, two mounting blocks 42 form a group, and a second rotating shaft 62 is rotatably connected to the two mounting blocks 42 in the same group, and a shaking block 63 is fixedly connected to the second rotating shaft 62; a torsion spring 64 is sleeved on the second rotating shaft 62, one end of the torsion spring 64 is connected to the shaking block 63 and the other end is connected to the mounting block 42. A first adjustment block 71 is integrally provided on the shaking block 63, and both ends of the first adjustment block 71 are provided with chamfers.

[0038] The third connecting block 76 is provided with an arc groove 761, in which the second adjusting block 72 is slidably connected, the second adjusting block 72 is fixedly connected with the third adjusting block 73, the end of the third adjusting block 73 away from the second adjusting block 72 is fixedly connected with the fourth adjusting block 74, and both ends of the fourth adjusting block 74 are provided with chamfers.

[0039] When the chamfer on the fourth adjusting block 74 contacts the chamfer on the first adjusting block 71 , the fourth adjusting block 74 will squeeze the first adjusting block 71 , and the first adjusting block 71 will drive the shaking block 63 to rotate, so that the shaking block 63 hits the protective net 52 .

[0040] refer to Figure 6 , Figure 8 and Fig. 9 The second connecting block 65 is fixedly connected with a fourth connecting block 77, the fourth connecting block 77 is fixedly connected with a first screw rod 78, the first screw rod 78 is sleeved with a fifth adjusting block 75, and the fifth adjusting block 75 is threadedly connected with the first screw rod 78; the fifth adjusting block 75 is connected with a telescopic rod 79, the telescopic rod 79 includes a first connecting rod connected with the fifth adjusting block 75, the first connecting rod is provided with a third groove, the third groove is slidably connected with a second connecting rod, and the end of the second connecting rod away from the fifth adjusting block 75 is connected with the second adjusting block 72. The fifth adjusting block 75 is fixedly connected with an airbag block 710.

[0041] refer to Figure 6 , Fig.10 and Fig.11, an eighth through hole 762 is provided on the third connecting block 76, and a ninth through hole 651 connected to the eighth through hole 762 is provided on the second connecting block 65; an adjusting mechanism 9 is provided on the second adjusting block 72, and the adjusting mechanism 9 includes a first adjusting block 91 hinged on the second adjusting block 72, and the end of the first adjusting block 91 away from the second adjusting block 72 passes through the eighth through hole 762 on the third connecting block 76 and is located in the ninth through hole 651 of the second connecting block 65; a fourth groove is provided on the end of the first adjusting block 91 away from the second adjusting block 72, and the second adjusting block 92 is slidably connected in the fourth groove, and a first limiting block 93 with a diamond-shaped vertical section and a second limiting block 94 with a rectangular vertical section are fixedly connected to the second adjusting block 92, the first limiting block 93 is located between the second limiting block 94 and the first adjusting block 91, and the vertical cross-sectional area of ​​the second limiting block 94 is larger than the vertical cross-sectional area of ​​the first limiting block 93. A first slide groove 513, a second slide groove 514 and a third slide groove 515 are provided on the fixed block 51. The first slide groove 513 is inclined and connected to the ninth through hole 651; the second slide groove 514 is horizontally arranged, one end of the second slide groove 514 is connected to the first slide groove 513 and the other end is connected to the third slide groove 515; the third slide groove 515 is vertically arranged, and the end of the third slide groove 515 away from the second slide groove 514 is connected to the first slide groove 513; the first limiting block 93 is slidingly arranged with the first slide groove 513, that is, the two opposite side walls of the first slide groove 513 both conflict with the first limiting block 93; the two opposite side walls of the second slide groove 514 and the third slide groove 515 do not conflict with the first limiting block 93. The fixing block 51 is provided with a limiting cavity 516, and the first slide groove 513, the second slide groove 514 and the third slide groove 515 are all connected to the limiting cavity 516. The limiting cavity 516 has a rectangular vertical section, and the upper side wall of the limiting cavity 516 is coplanar with the upper side wall of the second slide groove 514, and the side wall of the limiting cavity 516 is coplanar with the right side wall of the third slide groove 515. When the first limiting block 93 is located in the second slide groove 514, the second limiting block 94 abuts against the upper side wall of the limiting cavity 516, and when the first limiting block 93 is located in the third slide groove 515, the second limiting block 94 abuts against the right side wall of the limiting cavity 516.

[0042] refer to Figure 1 and Figure 2 The fourth assembly block 14 is clamped on one end of the fixed block 51 away from the third assembly block 13. The fourth assembly block 14 is provided with a fourth cavity 141 and a fifth cavity 142. The fourth cavity 141 on the fourth assembly block 14 is always connected to the sixth through hole 511 on the fixed block 51, and the fifth cavity 142 on the fourth assembly block 14 is always connected to the seventh through hole 512 on the fixed block 51. The first connecting tube 31 and the second connecting tube 32 are fixedly connected to the fourth assembly block 14. The first connecting tube 31 is connected to the fourth cavity 141 on the fourth assembly block 14, and the second connecting tube 32 is connected to the fifth cavity 142 on the fourth assembly block 14.

[0043] In the embodiment, the first connecting pipe 31 is connected to a vacuum cleaner, and the second connecting pipe 32 is connected to the atmosphere.

[0044] The implementation principle of the negative pressure structure of a vacuum device in an embodiment of the present application is: when the vacuum cleaner is performing a vacuuming operation, the third through hole 441 on the sealing plate 44 is connected to the first air cavity 131 on the third assembly block 13, and the fourth through hole 442 on the sealing plate 44 is connected to the second air cavity 132 on the third assembly block 13. When the dust suction motor 2 is started, the gas will enter the fourth cavity 141 of the fourth assembly block 14 through the first connecting pipe 31, then enter the sixth through hole 511 of the fixed block 51, and then enter the first air cavity 131 of the second assembly block 12 through the third through hole 441 on the blocking plate 44, and then enter the first cavity 171 of the limiting block 16 through the first through hole 133 of the second assembly block 12, and then enter the third cavity 173 between the limiting block 16 and the second assembly block 12 through the second cavity 172 between the limiting block 16 and the first assembly block 11, and then enter the second air cavity 132 of the third assembly block 13 through the second through hole 134 on the third assembly block 13, and then enter the seventh through hole 512 of the fixed block 51 through the fourth through hole 442 on the blocking plate 44, and then enter the second connecting pipe 32 through the fifth cavity 142 on the fourth assembly block 14, and finally be discharged through the second connecting pipe 32.

[0045] When the vacuum cleaner is not performing a vacuuming operation, the toggle block 45 is rotated, and the toggle block 45 drives the blocking plate 44 to rotate, so that the third through hole 441 on the blocking plate 44 is connected to the second air cavity 132 on the third assembly block 13, and the fourth through hole 442 on the blocking plate 44 is connected to the first air cavity 131 on the third assembly block 13, and the third through hole 441 on the blocking plate 44 is still connected to the sixth through hole 511 on the fixed block 51, and the fourth through hole 442 on the blocking plate 44 is still connected to the seventh through hole 512 on the fixed block 51. When the dust collecting motor 2 is started, the gas in the atmosphere enters the fifth cavity 142 of the fourth assembly block 14 through the second connecting pipe 32, then enters the seventh through hole 512 of the fixing block 51, and then enters the first air cavity 131 of the second assembly block 12 through the fourth through hole 442 on the blocking plate 44, and then enters the first cavity 171 of the limiting block 16 through the first through hole 133 of the second assembly block 12, and then enters the second cavity 172 between the limiting block 16 and the first assembly block 11. The air passes through the third cavity 173 between the limiting block 16 and the second assembly block 12, then enters the second air cavity 132 of the third assembly block 13 through the second through hole 134 on the third assembly block 13, then enters the sixth through hole 511 of the fixing block 51 through the third through hole 441 on the blocking plate 44, then enters the second connecting pipe 32 through the fourth cavity 141 on the fourth assembly block 14, and finally enters the vacuum cleaner through the first connecting pipe 31 to blow off the dust adhering to the filter of the vacuum cleaner.

[0046] When the toggle block 45 is rotated to connect the fourth through hole 442 on the blocking plate 44 with the first air chamber 131 on the second assembly block 12, the ring gear 84 on the toggle block 45 drives the adjusting gear 83 to rotate, and the adjusting gear 83 drives the second screw rod 82 to rotate, and the second screw rod 82 drives the second connecting block 65 to move in the direction close to the fourth assembly block 14. Under the action of the first slide groove 513, the first limiting block 93 will slide in the ninth through hole 651 of the second connecting block 65 and the eighth through hole 762 of the third connecting block 76; when the toggle block 45 moves from one end of the fifth through hole 136 to the other end, the first limiting block 93 drives the second adjusting block 72 to move to the end of one end of the third connecting block 76. At this time, the first limiting block 93 will move from the first slide groove 513 to the second slide groove 514, and the second limiting block 94 will contact the upper side wall of the limiting chamber 516. Start the hydraulic motor, and the air enters the seventh through hole 512 of the fixed block 51 through the second connecting pipe 32. Under the action of the flowing gas, the airbag block 710 will move in the seventh through hole 512, and the airbag block 710 will drive the fifth adjusting block 75 to move, and the fifth adjusting block 75 will rotate and move; the first connecting rod on the fifth adjusting block 75 drives the second connecting rod to rotate, and the second connecting rod will drive the second adjusting block 72 to slide in the arc groove 761 of the third connecting block 76, and the third adjusting block 73 on the second adjusting block 72 drives the fourth adjusting block 74 to move. When the chamfer on the fourth adjusting block 74 conflicts with the chamfer on the first adjusting block 71, the fourth adjusting block 74 will squeeze the first adjusting block 71, and the first adjusting block 71 drives the shaking block 63 to rotate, so that the shaking block 63 hits the protective net 52. When the second adjustment block 72 moves to the other end of the third connection block 76, the first limiting block 93 enters the third sliding groove 515 from the second sliding groove 514, and the second limiting block 94 contacts the right side wall of the limiting cavity 516. When the toggle block 45 is rotated to connect the third through hole 441 on the blocking plate 44 with the first air cavity 131 on the second assembly block 12, the second connection block 65 moves downward, and the first limiting block 93 moves from the third sliding groove 515 to the direction close to the first sliding groove 513. When the rotating block is reset, the first limiting block 93 moves from the third sliding groove 515 to the first sliding groove 513, and the second limiting block 94 changes from contacting the side wall of the limiting cavity 516 to no longer contacting the side wall of the limiting cavity 516.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A negative pressure structure of a dust collecting device, characterized in that: It comprises a main body (1), a dust collection motor (2), a first connecting pipe (31), a second connecting pipe (32) and a switching mechanism (4). An air duct (17) is formed on the main body (1), the dust suction motor (2) is arranged on the main body (1) and the dust suction motor (2) is used to provide wind toward the air duct (17), one end of the air duct (17) is a first end and the other end is a second end; The first connecting pipe (31) and the second connecting pipe (32) are both arranged on the main body (1). The switching mechanism (4) is arranged on the main body (1), and the first connecting pipe (31) is connected to the first end of the air duct (17) through the switching mechanism (4), and the second connecting pipe (32) is connected to the second end of the air duct (17) through the switching mechanism (4); Under the action of the switching mechanism (4), the first connecting pipe (31) can be connected to the second end of the air duct (17), and the second connecting pipe (32) can be connected to the first end of the air duct (17).

2. The negative pressure structure of a dust collecting device according to claim 1, characterized in that: The main body (1) comprises a first assembly block (11), a second assembly block (12), a third assembly block (13), a fourth assembly block (14), a first connecting block (15) and a limiting block (16). The second assembly block (12) is arranged on the first assembly block (11), the first connection block (15) is arranged on the second assembly block (12), the limiting block (16) is arranged on the first connection block (15), a first cavity (171) is opened on the limiting block (16), a second cavity (172) is formed between the limiting block (16) and the first assembly block (11), a third cavity (173) is formed between the limiting block (16) and the second assembly block (12), the first cavity (171), the second cavity (172) and the third cavity (173) together form the air duct (17); an end of the first cavity (171) away from the first assembly block (11) is a first end of the air duct (17), and an end of the third cavity (173) away from the first assembly block (11) is a second end of the air duct (17); The dust collection motor (2) is arranged on the first assembly block (11), and one end of the dust collection motor (2) away from the first assembly block (11) is located in the first cavity (171) of the limiting block (16); The third assembly block (13) is arranged on the first assembly block (11), and the switching mechanism (4) is arranged on the third assembly block (13); The fourth assembly block (14) is arranged on the third assembly block (13); the first connecting pipe (31) and the second connecting pipe (32) are both arranged on the fourth assembly block (14); a fourth cavity (141) communicating with the first connecting pipe (31) and a fifth cavity (142) communicating with the second connecting pipe (32) are provided on the fourth assembly block (14); the fourth cavity (141) is communicated with a first end of the air duct (17) through the switching mechanism (4); and the fifth cavity (142) is communicated with a second end of the air duct (17) through the switching mechanism (4).

3. The negative pressure structure of a dust collecting device according to claim 2, characterized in that: The switching mechanism (4) comprises a partition block (41), a mounting block (42), a first rotating shaft (43), a blocking plate (44) and a toggle block (45). The third assembly block (13) is provided with a first groove, the partition block (41) is arranged on the third assembly block (13) and is located in the first groove, the partition block (41) divides the first groove into a first air cavity (131) and a second air cavity (132), the third assembly block (13) is provided with a first through hole (133) communicating with the first air cavity (131), and the first cavity (171) is communicated with the first through hole (133); the third assembly block (13) is provided with a second through hole (134) communicating with the second air cavity (132), and the third cavity (173) is communicated with the second through hole (134); The mounting block (42) is arranged on the partition block (41), and the first rotating shaft (43) is rotatably arranged on the mounting block (42); The third assembly block (13) is provided with a second groove (135) connected to the first groove; the blocking plate (44) is arranged on the first rotating shaft (43); the blocking plate (44) is located in the second groove (135); the blocking plate (44) is provided with a third through hole (441) and a fourth through hole (442); when the third through hole (441) is connected to the first air cavity (131), the fourth through hole (442) is connected to the second air cavity (132); when the third through hole (441) is always connected to the fourth cavity (141), the fourth through hole (442) is always connected to the fifth cavity (142); The third assembly block (13) is provided with a fifth through hole (136) which is in communication with the second groove (135); the toggle block (45) is arranged on the blocking plate (44), and one end of the toggle block (45) away from the blocking plate (44) passes through the fifth through hole (136).

4. The negative pressure structure of a dust collecting device according to claim 3, characterized in that: The third assembly block (13) is provided with a protection mechanism (5), the protection mechanism (5) comprising a fixing block (51) and a protection net (52). The fixing block (51) is arranged on the third assembly block (13), and the fourth assembly block (14) is arranged on the fixing block (51); a sixth through hole (511) and a seventh through hole (512) are provided on the fixing block (51); the sixth through hole (511) is communicated with the fourth cavity (141), and the seventh through hole (512) is communicated with the fifth cavity (142); when the third through hole (441) is communicated with the sixth through hole (511), the fourth through hole (442) is communicated with the seventh through hole (512); The protective net (52) is arranged on the fixing block (51), and the protective net (52) is capable of covering the sixth through hole (511) and the seventh through hole (512).

5. The negative pressure structure of a dust collecting device according to claim 4, characterized in that: The fixed block (51) is provided with a shaking mechanism (6), and the shaking mechanism (6) comprises a supporting block (61), a second rotating shaft (62), a shaking block (63), a torsion spring (64) and an adjustment component. A plurality of the support blocks (61) are provided, and the plurality of the support blocks (61) are all provided on the fixed block (51); The second rotating shaft (62) is rotatably disposed on the supporting block (61), the shaking block (63) is disposed on the second rotating shaft (62), and the shaking block (63) is capable of contacting the protective net (52); The torsion spring (64) is sleeved on the second rotating shaft (62), one end of the torsion spring (64) is connected to the supporting block (61) and the other end is connected to the shaking block (63); The adjustment component is arranged on the fixed block (51) and is connected to the shaking block (63).

6. The negative pressure structure of a dust collecting device according to claim 5, characterized in that: A second connecting block (65) is arranged on the fixing block (51), and the plurality of supporting blocks (61) are all arranged on the second connecting block (65); The adjustment assembly comprises a first adjustment block (71), a second adjustment block (72), a third adjustment block (73), a fourth adjustment block (74), a fifth adjustment block (75), a third connecting block (76), a fourth connecting block (77), a first screw rod (78), a telescopic rod (79) and an airbag block (710). The first adjustment block (71) is arranged on the shaking block (63); The third connecting block (76) is arranged on the second connecting block (65), an arc-shaped groove (761) is provided on the third connecting block (76), and the second adjusting block (72) is slidably arranged in the arc-shaped groove (761); The third adjustment block (73) is arranged on the second adjustment block (72), the fourth adjustment block (74) is arranged on the third adjustment block (73), and the fourth adjustment block (74) is capable of contacting the first adjustment block (71); The fourth connecting block (77) is arranged on the second connecting block (65), and the first screw rod (78) is arranged on the fourth connecting block (77); The fifth adjustment block (75) is threadedly connected to the first screw rod (78); one end of the telescopic rod (79) is connected to the fifth adjustment block (75) and the other end is connected to the second adjustment block (72); The airbag block (710) is arranged on the fourth adjustment block (74).

7. The negative pressure structure of a dust collecting device according to claim 6, characterized in that: The fixed block (51) is provided with a lifting mechanism (8), the lifting mechanism (8) comprising a lifting block (81), a second screw rod (82), an adjusting gear (83) and a gear ring (84). The lifting block (81) is arranged on the second connecting block (65) and is slidably arranged on the fixed block (51); The second screw rod (82) is rotatably disposed on the fixed block (51), and the second screw rod (82) passes through the lifting block (81) and is threadedly connected to the lifting block (81); The adjusting gear (83) is key-connected to the second screw rod (82); The gear ring (84) is arranged on the blocking plate (44) and meshes with the adjusting gear (83).

8. The negative pressure structure of a dust collecting device according to claim 7, characterized in that: The third connecting block (76) is provided with an eighth through hole (762), and the second connecting block (65) is provided with a ninth through hole (651) which is in communication with the eighth through hole (762). The third adjustment block (73) is provided with an adjustment mechanism (9), the adjustment mechanism (9) comprising a first adjustment block (91), a second adjustment block (92), a first limiting block (93) and a second limiting block (94). The first adjustment block (91) is arranged on the second adjustment block (72), and one end of the first adjustment block (91) away from the second adjustment block (72) passes through the eighth through hole (762) and is located in the ninth through hole (651); The second adjustment block (92) is slidably arranged on the first adjustment block (91), the first limiting block (93) and the second limiting block (94) are both arranged on the second adjustment block (92), and the first limiting block (93) is located between the second limiting block (94) and the third adjustment block (73); The fixed block (51) is provided with a first slide groove (513), a second slide groove (514) connected to the first slide groove (513), and a third slide groove (515) connected to the second slide groove (514); the third slide groove (515) is connected to the first slide groove (513); the first limiting block (93) is slidably connected to the first slide groove (513); the first limiting block (93) can move in the second slide groove (514) and the third slide groove (515); The fixed block (51) is provided with a limiting cavity (516); the first slide groove (513), the second slide groove (514) and the third slide groove (515) are all connected to the limiting cavity (516); the second limiting block (94) is located in the limiting cavity (516); when the first limiting block (93) is located in the second slide groove (514) and the third slide groove (515), the second limiting block (94) abuts against the side wall of the limiting cavity (516).

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