A building dust filtering device with low-pressure exhaust function

Abstract

The present invention relates to the field of dust filtration technology, and in particular to a construction dust filtration device with a low-pressure exhaust function. The present invention discloses a construction dust filtration device with a low-pressure exhaust function, comprising a shell, the inner wall of the shell is provided with a support mechanism, and the interior of the shell is divided into a power chamber, a filter chamber and a collection chamber from top to bottom by the support mechanism; the support mechanism comprises an upper plate and a lower plate fixedly connected to the shell, the upper plate is located at the top of the shell, and the lower plate is located at the bottom of the shell; and an air intake pipe, two air intake pipes inserted opposite to each other form a group of air intake mechanisms; and a dust filter and a bag binding mechanism. The present invention accumulates and compresses scattered dust into dust blocks, improves the efficiency of cleaning dust in the filter bag, reduces the diffusion range of dust in the process of cleaning the filter bag, and ensures that construction dust filtering operations can always be carried out in the filter chamber.

Description

Technical Field

[0001] The invention relates to the technical field of dust filtration, in particular to a building dust filtration device with a low-pressure exhaust function. Background Art

[0002] The fine dust particles found on construction sites are dangerous. Once inhaled, dust can reduce a person's lung capacity and increase overall stress on the heart, which can lead to a variety of illnesses. If you're constantly coughing during a construction project, you could be inhaling dangerous amounts of construction dust. Not only is construction dust harmful to workers, but it can also wreak havoc on construction equipment. Once construction equipment is covered in dust, it must be maintained more frequently due to wear and tear on the engine, which can lead to higher overall operating costs.

[0003] Depending on the place of use, common dust removal methods include spray dust removal and exhaust filtration dust removal. Exhaust filtration dust removal is mostly used in closed places. Its principle is that the air inlet end of the exhaust fan is connected to the air collecting hopper through a pipe, and the air outlet end of the exhaust fan is connected to the building dust filtration equipment through a pipe. After the exhaust fan is running, low-pressure gas mixed with dust enters the building dust filtration equipment. There are several filter bags arranged in the building dust filtration equipment. The dust is intercepted on the outer surface of the filter bag, and the clean low-pressure gas passes through the filter bag and is discharged to the outside. Dust will accumulate on the surface of the filter bag, and the dust on the outer wall of the filter bag is removed by the pulse principle.

[0004] The filtration efficiency of the filter bag is not 100%. A small amount of dust will pass through the filter bag and adhere to the inner wall of the filter bag. After pulse cleaning, the dust inside the construction dust filtration equipment will spread over a large range and float in the equipment at a high density. Since the dust is very light, it takes a long time for the dust to accumulate in the dust collecting hopper at the bottom of the construction dust filtration equipment. In this process, it is not convenient to perform dust filtration operations, which will lead to a decrease in the dust filtration degree. Summary of the invention

[0005] The object of the present invention is to provide a building dust filtering device with a low-pressure exhaust function to solve the existing problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a construction dust filtering device with a low-pressure exhaust function, comprising a shell, the inner wall of the shell is provided with a supporting mechanism, and the interior of the shell is divided into a power chamber, a filter chamber and a collection chamber from top to bottom in sequence by the supporting mechanism; the supporting mechanism comprises an upper plate and a lower plate fixedly connected to the shell, the upper plate is located at the top of the shell, and the lower plate is located at the bottom of the shell;

[0007] and an intake pipe which is located at the top of the power chamber, and two mutually opposingly inserted intake pipes form a set of intake mechanisms;

[0008] and a dust filter element. A plurality of dust filter elements are provided at the bottom end of the intake pipe. The dust filter element includes a first cylinder, a second cylinder, a filter bag, a fourth cylinder, and a lifting plate. The first cylinder is connected to the bottom end of the intake pipe. The bottom of the first cylinder is connected to the second cylinder through a bearing. The second cylinder penetrates through the inner wall of the upper plate. A filter bag is provided at the bottom end of the second cylinder. A fourth cylinder is provided at the bottom end of the filter bag. A plurality of the fourth cylinders directly below the same intake pipe are fixedly connected through a lifting plate;

[0009] A collecting pocket is provided at the bottom end of the fourth cylinder. A fifth cylinder is provided at the bottom end of the collecting pocket. The fifth cylinder penetrates through the inner wall of the lower plate; A first circular gear is sleeved on the outer wall of the first cylinder above the upper plate. Adjacent two first circular gears are meshed with each other. A motor is provided on the outer wall of the housing. A second circular gear is provided on the output shaft of the motor. The second circular gear is meshed with one of the first circular gears;

[0010] and a bag bundling mechanism which controls the opening or closing of the collecting pocket.

[0011] In a preferred embodiment: The intake pipe is in a "冂" shape and includes an air inlet end, a mounting groove, and a mounting section; The mutually opposing insertion means that in the same set of intake mechanisms, the mounting section of one intake pipe is located in the mounting groove of the other intake pipe, and the air inlet ends of the two intake pipes face both sides respectively.

[0012] In a preferred embodiment: The first cylinder, the second cylinder, and the fourth cylinder are all made of hard and airtight materials, and the dust filter elements are arranged in a single row along the path of the intake pipe; A second through hole adapted to the second cylinder is provided on the inner wall of the upper plate. The second cylinder is rotatably connected to the second through hole; The filter bag and the lifting plate are both located in the filter chamber. The filter bag is made of deformable and breathable material. The fourth cylinder is fixedly connected to the lifting plate. The lifting plate is in a "冂" shape.

[0013] In a preferred embodiment: A first through hole adapted to the fifth cylinder is provided on the inner wall of the lower plate. The first through hole is slidably connected to the fifth cylinder.

[0014] In a preferred embodiment: A threading hole is provided in a circle around the inner wall of the collecting pocket. The threading hole is sleeved in the middle of the collecting pocket. The collecting pocket is made of elastic material.

[0015] In a preferred embodiment: the bag binding mechanism includes a support rod, a rope, three through holes, a ring, a side plate and a steering roller, the inner wall of the shell is provided with a support rod above the lifting plate, the bottom end of the support rod is provided with a rope, the inner wall of the lifting plate is provided with three through holes, the bottom end of the lifting plate is fixedly provided with a side plate, and the bottom end of the side plate is rotatably provided with a steering roller.

[0016] In a preferred embodiment: the two ends of the rope are end a and end b respectively, the threading hole includes end d and end e, the end a of the rope is fixedly provided with a ring, the inner wall of the ring is provided with through hole four, and the end b is fixedly connected to the support rod after passing through the end d, the threading hole, the end e, the inner wall of through hole four, the outer wall of the steering roller and the inner wall of through hole three in sequence.

[0017] In a preferred embodiment: a load-bearing block is fixedly provided on the side wall of the shell, and the load-bearing block supports the lifting plate. An adjusting block is connected to the side wall of the shell, and the adjusting block moves longitudinally along the side wall of the shell. An electric push rod is fixedly provided on the top of the adjusting block. The side wall of the lifting plate is provided with a connected slide groove and a slot. The cross-section of the adjusting block is equal to the cross-section of the slide groove, and the electric push rod is plugged into the slot.

[0018] In a preferred embodiment: the maximum displacement value of the adjustment block is smaller than the maximum displacement value of the cylinder body five, so that the bottom end of the cylinder body five is always located in the collecting chamber, the outer wall of the lifting plate is provided with a protrusion, and the inner wall of the shell is provided with a groove, and the protrusion is slidably connected to the groove to limit the running trajectory of the lifting plate.

[0019] In a preferred embodiment: the outer wall of the shell is provided with an exhaust pipe connected to the filter chamber, and the outer wall of the cylinder body five is in three-phase contact with the through hole.

[0020] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0021] The present invention can clean several dust filters at the bottom end of one air intake pipe separately, while several dust filters at the bottom end of another air intake pipe can still perform dust filtering operations, thereby ensuring the continuous implementation of the filtering operation and avoiding delays in the efficiency of the construction operation; a large amount of scattered dust is accumulated, gathered, and compressed together to obtain dust blocks, which are centrally transported and collected, and the dust diffusion range is reduced during the cleaning process of the filter bags, thereby ensuring that the construction dust filtering operation can always be performed in the filter chamber without stopping the dust filtering operation of the equipment, thereby ensuring the stable operation of the construction dust filtering equipment; the vibration force generated by the collision of the lifting plate and the load-bearing block promotes the dust blocks to separate from the inner wall of the filter bag, thereby improving the efficiency of cleaning the dust in the filter bag, and completing the cleaning operation of several dust filters directly below the first air intake pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 is a front perspective view of the present invention;

[0024] Figure 2 It is a front perspective view of the retractable bag in the present invention in a tightened state;

[0025] Figure 3 The present invention Figure 2 A partial enlarged view of the middle A;

[0026] Figure 4 The present invention Figure 2 A partial enlarged view of point B in the middle;

[0027] Figure 5 It is a front perspective view of the storage bag in the present invention in an open state;

[0028] Figure 6 It is a truncated view of the pocket in the present invention;

[0029] Figure 7 The present invention Figure 6 A partial enlarged view of point C in the middle;

[0030] Figure 8 is a side view of the lifting plate in the present invention;

[0031] Fig. 9 It is an exploded view of the lifting plate and the electric push rod in the present invention;

[0032] Fig.10 is a top view of the interior of the present invention;

[0033] In the figure: 1, housing; 2, collecting chamber; 3, upper plate; 4, lower plate; 5, air inlet pipe; 6, motor; 7, circular gear 1; 8, circular gear 2; 9, through hole 1; 10, exhaust pipe;

[0034] 20. Cylinder 1; 21. Cylinder 2; 22. Filter bag; 24. Cylinder 4; 25. Lifting plate; 26. Retracting bag; 27. Cylinder 5;

[0035] 30. air inlet end; 31. mounting groove; 32. mounting section;

[0036] 40. Threading hole;

[0037] 50. Support rod; 51. Rope; 52. Ring; 53. Through hole three; 54. Turning roller; 55. Side plate; 56. Through hole four;

[0038] 60. load-bearing block; 61. adjusting block; 62. electric push rod; 63. slide groove; 64. slot; 65. groove. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figure 1-Figure 2 The present invention provides a technical solution: a construction dust filtering device with a low-pressure exhaust function, comprising a shell 1, the inner wall of the shell 1 is provided with a supporting mechanism, and the interior of the shell 1 is divided into a power chamber, a filter chamber and a collection chamber 2 from top to bottom in sequence through the supporting mechanism; the supporting mechanism comprises an upper plate 3 and a lower plate 4 fixedly connected to the shell 1, the upper plate 3 is located at the top of the shell 1, and the lower plate 4 is located at the bottom of the shell 1;

[0041] Figure 3-Figure 6 , and an air intake pipe 5, the air intake pipe 5 is located at the top of the power chamber, and the two air intake pipes 5 inserted opposite to each other form a set of air intake mechanisms;

[0042] And a dust filter, the bottom end of the air inlet pipe 5 is provided with a plurality of dust filters, the dust filter comprises a cylinder 1 20, a cylinder 21, a filter bag 22, a cylinder 4 24 and a lifting plate 25, the cylinder 1 20 is connected to the bottom end of the air inlet pipe 5, the bottom of the cylinder 1 20 is connected to the cylinder 2 21 through a bearing, the cylinder 2 21 runs through the inner wall of the upper plate 3, the bottom end of the cylinder 2 21 is provided with a filter bag 22, the bottom end of the filter bag 22 is provided with a cylinder 4 24, and the same inlet The plurality of cylinder bodies 24 directly below the air pipe 5 are fixedly connected via a lifting plate 25; the air inlet end 30 of the air inlet pipe 5 is connected to an external pipe, the pipe is connected to an exhaust fan, and the exhaust fan is connected to an air collecting hopper. After the exhaust fan is running, the gas mixed with dust passes through the air collecting hopper, the exhaust fan, the pipe, and the air inlet pipe 5 and enters the dust filter element. Since the closing bag 26 is in a closed state in the initial state, the dust is retained in the filter bag 22, and the air passes through the filter bag 22 to reach the filter cavity to obtain clean gas.

[0043] A receiving pocket 26 is provided at the bottom end of the cylinder body four 24, and a cylinder body five 27 is provided at the bottom end of the receiving pocket 26. The cylinder body five 27 penetrates through the inner wall of the lower plate 4. A first circular gear 7 is sleeved on the outer wall of the cylinder body one 20 above the upper plate 3. Adjacent two of the first circular gears 7 are meshed with each other. A motor 6 is provided on the outer wall of the housing 1, and a second circular gear 8 is provided on the output shaft of the motor 6. The second circular gear 8 is meshed with one of the first circular gears 7. When the air inlet passage of the first air inlet pipe 5 is closed, the air cylinder inside the housing 1 drives the adjusting block 61 to move upward, and the adjusting block 61 drives the electric push rod 62 to move upward synchronously. Since the telescopic end of the electric push rod 62 is inserted into the slot 64, the electric push rod 62 drives the lifting plate 25, the side plate 55, the turning roller 54, the wire passing hole 40 and the cylinder body five 27 to move upward synchronously. The gap between the lifting plate 25 and the upper plate 3 becomes smaller. After the adjusting block 61 moves to the set position and stops, the bottom opening of the cylinder body five 27 is still located below the lower plate 4.

[0044] and a bag binding mechanism for controlling the opening or closing of the receiving pocket 26 through the bag binding mechanism;

[0045] The air inlet pipe 5 is in a "冂" shape and includes an air inlet end 30, a mounting groove 31 and a mounting section 32. In the same group of air inlet mechanisms where they are inserted oppositely, the mounting section 32 of one air inlet pipe 5 is located in the mounting groove 31 of the other air inlet pipe 5, and the air inlet ends 30 of the two air inlet pipes 5 face both sides respectively. The clean gas is discharged to the outside through the exhaust pipe 10. After the filter bag 22 operates for a period of time, in order to ensure the filtering efficiency of the filter bag 22, the filter bag 22 needs to be cleaned. The two air inlet pipes 5 inserted oppositely form a group of air inlet mechanisms, and several dust filtering elements at the bottom end of one air inlet pipe 5 are cleaned separately, while several dust filtering elements at the bottom end of the other air inlet pipe 5 can still perform dust filtering operations, ensuring the continuous progress of the filtering operation and avoiding delaying the efficiency of the construction operation. The output shaft of the motor 6 drives the second circular gear 8 to rotate, the second circular gear 8 drives one of the first circular gears 7 on its outer wall to rotate, and adjacent two of the first circular gears 7 are meshed with each other, so that several first circular gears 7 directly below the same air inlet pipe 5 rotate simultaneously. The rotation directions of the several first circular gears 7 do not affect the subsequent operation of the equipment. The first circular gear 7 drives the cylinder body one 20 to rotate, and the cylinder body one 20 drives the top of the receiving pocket 26 to rotate. Since the bottom of the receiving pocket 26 is fixed by the cylinder body four 24 and cannot rotate, the continuous rotation of the cylinder body one 20 will drive the receiving pocket 26 to twist together, and the gradually tightened receiving pocket 26 will squeeze the dust inside the receiving pocket 26, causing the dust to gradually accumulate into blocks.

[0046] The first cylinder body 20, the second cylinder body 21, and the fourth cylinder body 24 are all made of hard and airtight materials, and the dust filter elements are arranged in a single row along the path of the intake pipe 5; a second through hole adapted to the second cylinder body 21 is provided on the inner wall of the upper plate 3, and the second cylinder body 21 is rotatably connected to the second through hole; both the filter bag 22 and the lifting plate 25 are located in the filter chamber, the filter bag 22 is made of deformable and breathable material, the fourth cylinder body 24 is fixedly connected to the lifting plate 25, and the lifting plate 25 is in a "冂" shape.

[0047] A first through hole 9 adapted to the fifth cylinder body 27 is provided on the inner wall of the lower plate 4, and the first through hole 9 is slidably connected to the fifth cylinder body 27. Since the outer wall of the fifth cylinder body 27 is in contact with the inner wall of the first through hole 9, gas will not pass through the first through hole 9 and enter the collection chamber 2, avoiding secondary contamination of the clean gas by the dust in the collection chamber 2.

[0048] A threading hole 40 is provided around the inner wall of the collection pocket 26, the threading hole 40 is sleeved in the middle of the collection pocket 26, and the collection pocket 26 is made of elastic material.

[0049] The bag-tying mechanism includes a support rod 50, a rope 51, a third through hole 53, a ring 52, a side plate 55, and a turning roller 54. A support rod 50 is provided on the inner wall of the housing 1 above the lifting plate 25, a rope 51 is provided at the bottom end of the support rod 50, a third through hole 53 is provided on the inner wall of the lifting plate 25, a side plate 55 is fixedly provided at the bottom end of the lifting plate 25, and a turning roller 54 is rotatably provided at the bottom end of the side plate 55.

[0050] Figure 7-10 , the two ends of the rope 51 are respectively an a end and a b end, the threading hole 40 includes a d end and an e end, a ring 52 is fixedly provided at the a end of the rope 51, a fourth through hole 56 is provided on the inner wall of the ring 52, and the b end passes through the d end, the threading hole 40, the e end, the inner wall of the fourth through hole 56, the outer wall of the turning roller 54, and the inner wall of the third through hole 53 in sequence and is fixedly connected to the support rod 50. During the upward movement of the threading hole 40, the collection pocket 26 will drive the a end of the rope 51 to gradually approach the support rod 50, making the rope 51 become slack, and the rope 51 loses the force to tighten the collection pocket 26. Since the collection pocket 26 is made of elastic material, the collection pocket 26 will expand outwards, making the inside of the collection pocket 26 gradually opened up.

[0051] When the cylinder 20 drives the top of the receiving bag 26 to rotate in the opposite direction, because the bottom of the receiving bag 26 is fixed by the cylinder 4 24 and cannot rotate, the continuous rotation of the cylinder 20 will drive the receiving bag 26 to rotate in the opposite direction, and the previously twisted receiving bag 26 is gradually opened, and the dust blocks fall along the inner wall of the filter bag 22. The dust blocks pass through the filter bag 22, the receiving bag 26 and the cylinder 5 27 and fall into the collecting chamber 2, and a large amount of scattered dust is accumulated, gathered and compressed together to obtain dust blocks. The dust blocks are transported and collected in a centralized manner, and the dust diffusion range is reduced during the cleaning process of the filter bag 22, thereby ensuring that the construction dust filtering operation can always be carried out in the filter chamber without stopping the dust filtering operation of the equipment, thereby ensuring the stable operation of the construction dust filtering equipment.

[0052] A load-bearing block 60 is fixedly provided on the side wall of the shell 1, and the load-bearing block 60 supports the lifting plate 25. An adjustment block 61 is connected to the side wall of the shell 1, and the adjustment block 61 moves longitudinally along the side wall of the shell 1. An electric push rod 62 is fixedly provided on the top of the adjustment block 61. A connecting slide groove 63 and a slot 64 are provided on the side wall of the lifting plate 25. The cross-section of the adjustment block 61 is equal to the cross-section of the slide groove 63, and the electric push rod 62 is plugged into the slot 64.

[0053] The maximum displacement value of the adjustment block 61 is smaller than the maximum displacement value of the cylinder body 5 27, so that the bottom end of the cylinder body 5 27 is always located in the collecting chamber 2. The outer wall of the lifting plate 25 is provided with a protrusion, and the inner wall of the shell 1 is provided with a groove 65. The protrusion is slidably connected with the groove 65 to limit the running trajectory of the lifting plate 25. The telescopic end of the electric push rod 62 is completely retracted, and the telescopic end of the electric push rod 62 is separated from the slot 64. The lifting plate 25 loses the support of the electric push rod 62, and the lifting plate 25 is driven downward by its own gravity to perform free fall motion. The lifting plate 25 falls on the load-bearing block 60, and the filter bag 22 is straightened and reset. When the lifting plate 25 falls on the load-bearing block 60, the lifting plate 25 will hit the load-bearing block 60, and vibration will be generated after the collision. The vibration is transmitted to the filter bag 22, the collection bag 26 and the cylinder 5 27 through the lifting plate 25 and the load-bearing block 60. The vibration of the filter bag 22 can promote the dust blocks to fall off from the inner wall of the filter bag 22;

[0054] During the falling process of the lifting plate 25, the lifting plate 25 will drive the receiving bag 26 to move downward synchronously. The direction of the rope 51 can be changed by the side plate 55 and the steering roller 54. The receiving bag 26 drives the end a of the rope 51 to gradually move away from the support rod 50, so that the rope 51 is gradually tightened, the ring 52 gradually moves away from the end b of the rope 51, the rope 51 section in the threading hole 40 becomes shorter and shorter, and the receiving bag 26 is tightened and closed; some dust falling off the inner wall of the filter bag 22 will accumulate at the bottom of the filter bag 22 or the top of the receiving bag 26;

[0055] The cylinder inside the shell 1 drives the adjustment block 61 to move downward and reset, and the adjustment block 61 drives the electric push rod 62 to move downward and reset synchronously. At this time, the electric push rod 62 is aligned with the slot 64 again, the electric push rod 62 is extended, and the telescopic end of the electric push rod 62 is inserted into the slot 64 and reset, so that the electric push rod 62 is connected to the lifting plate 25 again, and step 1 is repeated, so that the collection bag 26 is opened again, and the dust at the bottom of the filter bag 22 or the top of the collection bag 26 falls from the inside of the collection bag 26 into the collection chamber 2; the vibration force generated by the collision between the lifting plate 25 and the load-bearing block 60 promotes the dust blocks to separate from the inner wall of the filter bag 22, thereby improving the efficiency of cleaning the dust blocks in the filter bag 22, and completing the cleaning operation of several dust filters directly below the first air intake pipe 5.

[0056] The outer wall of the shell 1 is provided with an exhaust pipe 10 connected to the filter chamber, and the outer wall of the cylinder body 5 27 is in contact with the through hole 3 53 .

[0057] The specific implementation is as follows: when in use, the air inlet end 30 of the air inlet pipe 5 is connected to an external pipe, the pipe is connected to an exhaust fan, and the exhaust fan is connected to a gas collecting hopper. After the exhaust fan is running, the gas mixed with dust passes through the gas collecting hopper, the exhaust fan, the pipe, and the air inlet pipe 5 and enters the dust filter. Since the closing bag 26 is in a closed state in the initial state, the dust is retained inside the filter bag 22, and the air passes through the filter bag 22 to reach the filter cavity to obtain clean gas. Because the outer wall of the cylinder 5 27 fits the inner wall of the through hole 1 9, the gas will not pass through the through hole 1 9 into the collection cavity 2, avoiding the clean gas from being contaminated by the dust in the collection cavity 2 again. The clean gas is discharged to the outside through the exhaust pipe 10. After the filter bag 22 has been running for a period of time, in order to ensure the filtering efficiency of the filter bag 22, the filter bag 22 needs to be cleaned. The two air intake pipes 5 inserted opposite to each other form a group of air intake mechanisms. The dust filter elements at the bottom of one air intake pipe 5 are cleaned separately, and the dust filter elements at the bottom of the other air intake pipe 5 can still perform dust filtering operations, ensuring the continuous progress of the filtering operation and avoiding delays in the efficiency of the construction operation. The process of cleaning the dust filter elements at the bottom of the first air intake pipe 5 separately is as follows:

[0058] Step 1: close the air inlet passage of the first air inlet pipe 5, the cylinder inside the housing 1 drives the adjusting block 61 to move upward, and the adjusting block 61 drives the electric push rod 62 to move upward synchronously. Because the telescopic end of the electric push rod 62 is inserted into the slot 64, the electric push rod 62 drives the lifting plate 25, the side plate 55, the steering roller 54, the threading hole 40 and the cylinder body 5 27 to move upward synchronously, and the gap between the lifting plate 25 and the upper plate 3 becomes smaller. The adjusting block 61 moves to the set position and stops. At this time, the bottom opening of the cylinder body 5 27 is still below the lower plate 4.

[0059] Step 2, the output shaft of the motor 6 drives the circular gear 28 to rotate, and the circular gear 28 drives a circular gear 17 on its outer wall to rotate, and two adjacent circular gears 17 are meshed, so that a plurality of circular gears 17 directly below the same air inlet pipe 5 rotate at the same time, and the rotation direction of the plurality of circular gears 17 does not affect the subsequent operation of the equipment, and the circular gear 17 drives the cylinder 120 to rotate, and the cylinder 120 drives the top of the receiving bag 26 to rotate, because the bottom of the receiving bag 26 is fixed by the cylinder 24 and cannot rotate, so the continuous rotation of the cylinder 120 will drive the receiving bag 26 to twist together, and the gradual tightening of the receiving bag 26 will squeeze the dust inside the receiving bag 26, so that the dust gradually accumulates into blocks;

[0060] During the upward movement of the threading hole 40, the receiving bag 26 will drive the end a of the rope 51 to gradually approach the support rod 50, so that the rope 51 becomes loose, and the rope 51 loses the force to tighten the receiving bag 26. Because the receiving bag 26 is made of elastic material, the receiving bag 26 will open to the surroundings, so that the interior of the receiving bag 26 is gradually opened;

[0061] Step 3, the output shaft of the motor 6 drives the circular gear 28 to rotate in the opposite direction, and the circular gear 28 drives a circular gear 17 on its outer wall to rotate in the opposite direction. Two adjacent circular gears 17 are meshed, so that several circular gears 17 directly below the same air intake pipe 5 rotate in the opposite direction at the same time, and the circular gear 17 drives the cylinder 1 20 to rotate in the opposite direction, and the cylinder 1 20 drives the top of the receiving bag 26 to rotate in the opposite direction. Because the bottom of the receiving bag 26 is fixed by the cylinder 4 24 and cannot rotate, the continuous rotation of the cylinder 1 20 will drive the receiving bag 26 to rotate in the opposite direction. The twisted receiving bag 26 is gradually opened, and the dust block falls along the inner wall of the filter bag 22. The dust block passes through the filter bag 22, the receiving bag 26 and the cylinder 5 27 and falls into the collecting chamber 2. A large amount of scattered dust is accumulated, gathered and compressed together to obtain a dust block. The dust blocks are transported and collected in a centralized manner, and the diffusion range of the dust is reduced during the cleaning process of the filter bag 22, ensuring that the construction dust filtering operation can always be carried out in the filter chamber without stopping the dust filtering operation of the equipment, thereby ensuring the stable operation of the construction dust filtering equipment;

[0062] Step 4: The telescopic end of the electric push rod 62 is completely retracted, and the telescopic end of the electric push rod 62 is disengaged from the slot 64. The lifting plate 25 loses the support of the electric push rod 62, and the lifting plate 25 is driven downward by its own gravity to perform free fall motion. The lifting plate 25 falls on the load-bearing block 60, and the filter bag 22 is straightened and reset. When the lifting plate 25 falls on the load-bearing block 60, the lifting plate 25 will hit the load-bearing block 60, and vibration will be generated after the collision. The vibration is transmitted to the filter bag 22, the collection bag 26 and the cylinder 5 27 through the lifting plate 25 and the load-bearing block 60. The vibration of the filter bag 22 can promote the dust blocks to fall off from the inner wall of the filter bag 22;

[0063] During the falling process of the lifting plate 25, the lifting plate 25 will drive the receiving bag 26 to move downward synchronously. The direction of the rope 51 can be changed by the side plate 55 and the steering roller 54. The receiving bag 26 drives the end a of the rope 51 to gradually move away from the support rod 50, so that the rope 51 is gradually tightened, the ring 52 gradually moves away from the end b of the rope 51, the rope 51 section in the threading hole 40 becomes shorter and shorter, and the receiving bag 26 is tightened and closed; some dust falling off the inner wall of the filter bag 22 will accumulate at the bottom of the filter bag 22 or the top of the receiving bag 26;

[0064] The cylinder inside the shell 1 drives the adjustment block 61 to move downward and reset, and the adjustment block 61 drives the electric push rod 62 to move downward and reset synchronously. At this time, the electric push rod 62 is aligned with the slot 64 again, the electric push rod 62 is extended, and the telescopic end of the electric push rod 62 is inserted into the slot 64 and reset, so that the electric push rod 62 is connected to the lifting plate 25 again, and step 1 is repeated, so that the collection bag 26 is opened again, and the dust at the bottom of the filter bag 22 or the top of the collection bag 26 falls from the inside of the collection bag 26 into the collection chamber 2; the vibration force generated by the collision between the lifting plate 25 and the load-bearing block 60 promotes the dust block to separate from the inner wall of the filter bag 22, thereby improving the efficiency of cleaning the dust block in the filter bag 22, and completing the cleaning operation of several dust filters directly below the first air intake pipe 5.

[0065] Open the air inlet channel of the first air inlet pipe 5 to filter construction dust, and the dust-containing gas enters the construction dust filtration equipment for dust filtration; close the air inlet channel of the second air inlet pipe 5, repeat the above steps one to five, and clean several dust filters directly below the air inlet channel of the second air inlet pipe 5.

[0066] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A construction dust filtering device with low-pressure exhaust function, characterized in that: The invention comprises a shell (1), wherein the inner wall of the shell (1) is provided with a support mechanism, and the interior of the shell (1) is divided into a power chamber, a filter chamber and a collection chamber (2) from top to bottom in sequence by means of the support mechanism; the support mechanism comprises an upper plate (3) and a lower plate (4) fixedly connected to the shell (1), the upper plate (3) being located at the top of the shell (1), and the lower plate (4) being located at the bottom of the shell (1); and an air intake pipe (5), the air intake pipe (5) being located at the top of the power chamber, and two air intake pipes (5) inserted opposite to each other forming a set of air intake mechanisms; and a dust filter, wherein a plurality of dust filters are provided at the bottom end of the air intake pipe (5), the dust filters comprising a cylinder body 1 (20), a cylinder body 2 (21), a filter bag (22), a cylinder body 4 (24) and a lifting plate (25), the cylinder body 1 (20) being connected to the bottom end of the air intake pipe (5), the bottom of the cylinder body 1 (20) being connected to the cylinder body 2 (21) via a bearing, the cylinder body 2 (21) penetrating the inner wall of the upper plate (3), the bottom end of the cylinder body 2 (21) being provided with a filter bag (22), the bottom end of the filter bag (22) being provided with a cylinder body 4 (24), and the cylinder body 1 (20) being connected to the bottom end of the air intake pipe (5) via a bearing, the cylinder body 2 (21) penetrating the inner wall of the upper plate (3), the bottom end of the cylinder body 2 (21) being provided with a filter bag (22), the bottom end of the filter bag (22) being provided with a cylinder body 4 (24), and the cylinder body 1 (20) being connected to the bottom end of the air intake pipe (5) via a bearing. A plurality of cylinder bodies four (24) are fixedly connected via a lifting plate (25); a receiving bag (26) is provided at the bottom end of the cylinder body four (24), a cylinder body five (27) is provided at the bottom end of the receiving bag (26), and the cylinder body five (27) penetrates the inner wall of the lower plate (4); a circular gear one (7) is sleeved on the outer wall of the cylinder body one (20) above the upper plate (3), and two adjacent circular gears one (7) are meshed with each other; a motor (6) is provided on the outer wall of the housing (1), and a circular gear two (8) is provided on the output shaft of the motor (6), and the circular gear two (8) is meshed with one of the circular gears one (7); and a bag-binding mechanism, through which the bag-binding mechanism controls the opening or closing of the bag (26); The inner wall of the drawstring pocket (26) is surrounded by a circle of threading holes (40). The threading holes (40) are sleeved in the middle of the drawstring pocket (26). The drawstring pocket (26) is made of elastic material. The bag-binding mechanism includes a support rod (50), a rope (51), a third through hole (53), a ring (52), a side plate (55) and a turning roller (54). Above the lifting plate (25) on the inner wall of the housing (1), there is a support rod (50). At the bottom end of the support rod (50), there is a rope (51). On the inner wall of the lifting plate (25), there is a third through hole (53). At the bottom end of the lifting plate (25), a side plate (55) is fixedly provided. At the bottom end of the side plate (55), a turning roller (54) is rotatably provided. The two ends of the rope (51) are respectively an a end and a b end. The threading hole (40) includes a d end and an e end. At the a end of the rope (51), a ring (52) is fixedly provided. Inside the inner wall of the ring (52), there is a fourth through hole (56). The b end passes through the d end, the threading hole (40), the e end, the inner wall of the fourth through hole (56), the outer wall of the turning roller (54) and the inner wall of the third through hole (53) in sequence and then is fixedly connected to the support rod (50). On the side wall of the housing (1), a load-bearing block (60) is fixedly provided. The load-bearing block (60) supports the lifting plate (25). On the side wall of the housing (1), an adjusting block (61) is connected. The adjusting block (61) moves longitudinally along the side wall of the housing (1). At the top end of the adjusting block (61), an electric push rod (62) is fixedly provided. On the side wall of the lifting plate (25), there are a communicating chute (63) and a slot (64). The cross-section of the adjusting block (61) is equal to the cross-section of the chute (63). The electric push rod (62) is inserted into the slot (64).

2. The construction dust filtering equipment with low-pressure exhaust function according to claim 1 is characterized in that: The intake pipe (5) is in the shape of "冂". The intake pipe (5) includes an intake end (30), a mounting groove (31) and a mounting section (32). In the same group of intake mechanisms where they are inserted oppositely, the mounting section (32) of one intake pipe (5) is located inside the mounting groove (31) of the other intake pipe (5). The intake ends (30) of the two intake pipes (5) face both sides respectively.

3. The construction dust filtering equipment with low-pressure exhaust function according to claim 2 is characterized in that: The first cylinder (20), the second cylinder (21) and the fourth cylinder (24) are all made of hard and airtight materials. The dust filter elements are arranged in a single row along the path of the intake pipe (5). Inside the inner wall of the upper plate (3), there is a second through hole adapted to the second cylinder (21). The second cylinder (21) is rotatably connected to the second through hole. Both the filter bag (22) and the lifting plate (25) are located inside the filter cavity. The filter bag (22) is made of deformable and breathable material. The fourth cylinder (24) is fixedly connected to the lifting plate (25). The lifting plate (25) is in the shape of "冂".

4. The construction dust filtering equipment with low-pressure exhaust function according to claim 2 is characterized in that: Inside the inner wall of the lower plate (4), there is a first through hole (9) adapted to the fifth cylinder (27). The first through hole (9) is slidably connected to the fifth cylinder (27).

5. The construction dust filtering equipment with low-pressure exhaust function according to claim 1 is characterized in that: The maximum displacement value of the adjustment block (61) is smaller than the maximum displacement value of the cylinder body five (27), so that the bottom end of the cylinder body five (27) is always located in the collection chamber (2); the outer wall of the lifting plate (25) is provided with a protrusion, and the inner wall of the shell (1) is provided with a groove (65); the protrusion is slidably connected to the groove (65) and is used to limit the running track of the lifting plate (25).

6. The construction dust filtering equipment with low-pressure exhaust function according to claim 1 is characterized in that: The outer wall of the shell (1) is provided with an exhaust pipe (10) which is in communication with the filter chamber, and the outer wall of the cylinder body five (27) is in contact with the through hole three (53).

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