A high-negative-pressure dust collector facilitating dust cleaning

Abstract

The present invention relates to the technical field of dust collectors, and discloses a high-negative-pressure dust collector convenient for dust cleaning, which includes a machine body. An exhaust port and an air inlet communicating with each other are formed on the machine body. A temporary storage cavity is formed in the machine body below the air inlet. A cylindrical cavity is formed in the machine body, the top of which communicates with the air inlet and the bottom of which communicates with the temporary storage cavity. A support shaft coaxial with the cylindrical cavity is fixedly installed in the machine body, and a filter cartridge rotatably sleeved on the support shaft is inserted into the cylindrical cavity. One end of the filter cartridge is fixedly installed with a slave gear for blocking the port of the filter cartridge, and the other end corresponds to the exhaust port. In the present invention, when still only using one centrifuge to provide negative-pressure power, only a set of filter cartridges needs to be arranged in the direction of gas flow, so that each time the air is filtered, the set of filter cartridges can not only filter the air but also clean the filter cartridges themselves with the filtered air, thereby improving the utilization rate of the filter cartridges and avoiding waste of the filter cartridges.

Description

Technical Field

[0001] The present invention relates to the field of dust cleaning technology for dust collectors, and particularly to a high-negative-pressure dust collector facilitating dust cleaning. Background Art

[0002] High-negative-pressure dust collectors are widely used in industrial fields such as steel, power, food, metallurgy, and chemical industries. Their main function is to separate dust particles from the air containing dust, discharge the clean air, and reduce air pollution.

[0003] Inside a high-negative-pressure dust collector, there is a filter cartridge for filtering air. Due to the effect of high negative pressure, the air containing dust particles contacts the outer surface of the filter cartridge. The dust particles are filtered and adhered to the outer surface of the filter cartridge. The clean air after filtering out the dust particles passes through the upper layer of the filter cartridge, then through the hollow cavity of the filter cartridge, and rushes out from the port of the filter cartridge, and finally is discharged from the exhaust chamber. Since the dust particles adhere to the outer surface of the filter cartridge, when used for a long time, the dust particles will block the upper layer of the filter cartridge, thus affecting the air flow rate. Therefore, it is necessary to clean the dust particles on the outer surface of the filter cartridge irregularly, and this operation is called dust cleaning.

[0004] In the prior art, the operation of cleaning the filter cartridge is usually to add a vibration mechanism to vibrate the filter cartridge, so as to remove the dust particles on the filter cartridge, or to add a set of negative-pressure mechanism or high-pressure mechanism to generate an outward air flow in the inner cavity of the filter cartridge, and use the air flow to remove the dust particles on the filter cartridge. However, whether adding a vibration mechanism or a high-negative-pressure mechanism will increase the energy consumption of the equipment and the manufacturing cost. Therefore, technical improvements have also been made to the dust cleaning of the filter cartridge in the prior art.

[0005] For example, in the Chinese patent with the application number CN201521065202.0 and the name "Automatic Negative-Pressure Dust-Cleaning Filter Cartridge Dust Collector", by setting a combined valve with a driving device, the alternate opening and closing of the two ports of the filter cartridge are realized. The two ports of the filter cartridge respectively correspond to the exhaust chamber and the dust-cleaning air chamber one by one. When one port of the filter cartridge is communicated with the exhaust chamber, the other port is disconnected from the dust-cleaning air chamber, and vice versa. The number of filter cartridges is multiple and arranged along the direction of gas flow. When the outside of the filter cartridge for filtering air is covered with dust and needs to be cleaned, the driving device is used to drive the combined valve to disconnect one port of the filter cartridge from the exhaust chamber and connect the other port to the dust-cleaning air chamber, and at the same time, any other filter cartridge is set in the reverse direction to be used for filtering air. In this way, only one centrifugal fan is needed to provide negative-pressure power, so that when one filter cartridge is filtering air, the other filter cartridges are cleaned by the filtered air, and thus the energy consumption and cost of the equipment can be effectively reduced.

[0006] The design of the automatic negative pressure cleaning filter cartridge dust collector provided by the above patent is relatively ingenious, so that only one centrifugal fan is needed to provide negative pressure power, so that when one filter cartridge is filtering air, the air filtered by other filter cartridges can be cleaned, thereby realizing the cyclic filtering and cleaning of the filter cartridges. However, the applicant has found through continuous actual operation and improvement that it has at least the following deficiencies:

[0007] In order to realize the cleaning of the filter cartridge while filtering the air, it is necessary to set up multiple groups of filter cartridges in the direction of gas flow. Through the alternating cooperation of "you filter and he cleans, he cleans and you filter" between multiple groups of filter cartridges, it is possible to realize that only one centrifugal fan is needed to provide negative pressure power to enable the filter cartridge to filter the air and clean the filter cartridge at the same time. It can be understood that: a certain group of filter cartridges can only filter the air or clean the filter cartridges. In order to ensure that there is a filter cartridge to filter the air every time, it is necessary to set up multiple groups of filter cartridges in the direction of gas flow for use together. However, this will inevitably lead to a significant reduction in the utilization rate of each group of filter cartridges, resulting in a waste of the number of filter cartridges. Therefore, how to set up only one group of filter cartridges in the direction of gas flow while still using only one centrifuge to provide negative pressure power, so that each time the air is filtered, the filter cartridge can filter the air and clean the filtered air itself to improve the utilization rate of the filter cartridge and avoid the waste of the filter cartridge is a technical problem that needs to be solved urgently. Summary of the invention

[0008] The purpose of the present invention is to provide a high negative pressure dust collector which is easy to clean, so as to solve the above-mentioned deficiencies in the prior art.

[0009] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a high negative pressure dust collector that is easy to clean, comprising a body, the body is provided with an exhaust port and an air inlet that are connected to each other, a temporary storage chamber located below the air inlet is formed in the body, a cylindrical chamber is provided in the body, the top of which is connected to the air inlet and the bottom of which is connected to the temporary storage chamber, a support shaft coaxial with the cylindrical chamber is fixedly installed in the body, and a filter cartridge rotatably sleeved on the support shaft is inserted in the cylindrical chamber;

[0010] A slave gear for blocking the filter cartridge port is fixedly installed at one end of the filter cartridge, and the other end corresponds to the exhaust port. The high-pressure air entering from the air inlet is filtered by the top of the outer peripheral surface of the filter cartridge, and the dust particles in the air adhere to the top of the outer peripheral surface of the filter cartridge. A driving member for driving the filter cartridge to rotate in the cylindrical cavity is provided in the body, so that the top of the outer peripheral surface of the filter cartridge can be switched to the bottom and correspond to the temporary storage cavity;

[0011] A ventilation duct that connects the exhaust port and the temporary storage chamber is also provided inside the machine body. A filter assembly for covering the port of the ventilation duct is arranged in the temporary storage chamber. Part of the high-pressure air filtered by the filter cartridge flows out through the port of the filter cartridge towards the exhaust port, and part of it impacts the bottom of the inner cavity of the filter cartridge downward to blow off the dust particles adhering to the bottom of the outer peripheral surface of the filter cartridge into the temporary storage chamber. Then, the air passes through the filter assembly and flows out through the ventilation duct towards the exhaust port.

[0012] For the above-mentioned high-negative-pressure dust collector that is convenient for dust cleaning, the driving member includes a self-locking servo motor installed on the machine body and a driving gear coaxially connected to the output shaft of the self-locking servo motor. The driving gear meshes with the driven gear, and the driving gear is driven to rotate by the self-locking servo motor, thereby driving the driven gear and the filter cartridge to rotate.

[0013] For the above-mentioned high-negative-pressure dust collector that is convenient for dust cleaning, a baffle is arranged at the port of the filter cartridge corresponding to the exhaust port. The baffle can block the port of the filter cartridge. A thread is provided on the outer circumferential surface of the support shaft, and a threaded hole screwed with the thread is opened at the center of the baffle. A plurality of insertion rods arranged circumferentially and slidably inserted into the baffle are fixedly installed on the filter cartridge. During the process of the driving member driving the filter cartridge to rotate, the baffle is driven to rotate self, so that the baffle moves axially, thereby adjusting the resistance of the air passing through the port of the filter cartridge.

[0014] For the above-mentioned high-negative-pressure dust collector that is convenient for dust cleaning, a reinforcing plate is fixedly installed at both ends of the inner cavity of the filter cartridge. The two reinforcing plates are rotatably inserted into the support shaft, and the insertion rods are fixedly installed on the reinforcing plate close to the baffle.

[0015] For the above-mentioned high-negative-pressure dust collector that is convenient for dust cleaning, two symmetrically arranged limit blocks are fixedly installed on the support shaft. A number of balls are rotatably embedded on the opposite surfaces of the two limit blocks. The balls on one of the limit blocks abut against the side surface of the driven gear, and the balls on the other limit block abut against the side surface of the reinforcing plate, so that the filter cartridge will not move axially when rotating.

[0016] For the above-mentioned high-negative-pressure dust collector that is convenient for dust cleaning, the distance between the outer peripheral surface of the filter cartridge and the inner wall of the cylindrical cavity is between 0 and 9 mm.

[0017] For the above-mentioned high-negative-pressure dust collector that is convenient for dust cleaning, the filter assembly is elastically and rotatably installed on the inner wall of the temporary storage chamber. In the initial state, the filter assembly is elastically pressed and fitted with the inner wall of the temporary storage chamber. A transmission member is arranged between the baffle and the filter assembly. During the process of the driving member driving the baffle to move away from the filter cartridge, the transmission member can be driven to first push the filter assembly to rotate elastically. When the filter assembly rotates to the limit state, the filter assembly is disengaged from the transmission member and impacts the inner wall of the temporary storage chamber under the action of the elastic rotational force, so as to remove the dust particles adhering to the filter assembly.

[0018] The above-mentioned high-negative-pressure dust collector facilitating ash cleaning, wherein the transmission member includes an arc-shaped rod elastically and rotatably installed in the machine body and a sliding plate elastically and slidably inserted on the filter assembly. One end of the arc-shaped rod is elastically abutted against the side surface of the baffle plate, and the other end extends into the temporary storage cavity. A butting ball cooperating with the sliding plate is fixedly installed on the arc-shaped rod located in the temporary storage cavity. During the movement of the baffle plate, the arc-shaped rod is elastically rotated to make the butting ball continuously approach and push the sliding plate to drive the filter assembly to elastically rotate. When the filter assembly rotates to the limit state, the butting ball pushes the sliding plate to slide towards the inner side of the filter assembly so that the sliding plate is staggered from the butting ball.

[0019] The above-mentioned high-negative-pressure dust collector facilitating ash cleaning, wherein the cylindrical cavities and the filter cartridges are both two and are inserted correspondingly one by one. The two cylindrical cavities are arranged side by side at intervals. Baffle plates and follower gears are arranged on both of the two filter cartridges, and the driving member simultaneously drives the two filter cartridges to rotate self.

[0020] The above-mentioned high-negative-pressure dust collector facilitating ash cleaning, wherein the number of the transmission members is also two and corresponds to the two filter cartridges one by one. The filter assembly is located between the two arc-shaped rods of the two transmission members. The number of the sliding plates elastically and slidably inserted on the filter assembly is two and is in butt joint cooperation with the two butting balls on the two arc-shaped rods one by one.

[0021] Beneficial effects:

[0022] 1. In the above technical solution, the present invention sets the filter cartridge in a form that can be driven by a driving member to rotate, so that the top and bottom of the outer peripheral surface of the filter cartridge can be switched with each other. Each time during filtration, it is the top of the outer peripheral surface of the filter cartridge that performs filtration. Therefore, when a large amount of dust particles adhere to the top of the outer peripheral surface of the filter cartridge, the driving member can switch the top of the outer peripheral surface of the filter cartridge to the bottom. At this time, the dust particles are located at the bottom of the outer peripheral surface of the filter cartridge, and the top of the outer peripheral surface of the filter cartridge becomes clean to filter the air next time. At the same time, through the improvement of the internal structure of the machine body, the filtered high-pressure air has two discharge channels after entering the inner cavity of the filter cartridge. One of them can penetrate the entire filter cartridge and thus generate an impact force on the bottom of the inner cavity of the filter cartridge. Under the action of the impact force, the dust particles adhering to the bottom of the outer peripheral surface of the filter cartridge can be removed and fall into the temporary storage cavity to be collected. Then, the high-pressure air entering the temporary storage cavity is filtered by the filter assembly and then flows into the exhaust port to be discharged. Therefore, when repeatedly switching the positions of the top and bottom of the outer peripheral surface of the filter cartridge, not only can it be ensured that the filter cartridge has a clean outer peripheral surface top for filtering air each time, but also the clean high-pressure air can be used to continuously clean the dust particles adhering to the filter cartridge. There is no need to set multiple filter cartridges in the gas flow direction, and only one centrifuge is needed to improve the negative pressure power. Therefore, in the case of still only using one centrifuge to provide negative pressure power, the present invention only needs to set a group of filter cartridges in the gas flow direction, and each time the air is filtered, this group of filter cartridges can not only filter the air but also be self-cleaned by the filtered air to improve the utilization rate of the filter cartridges and avoid waste of the filter cartridges, effectively solving the deficiencies in the prior art;

[0023] 2. Furthermore, through the drive of the driving member, the present invention can not only switch the positions between the top and bottom of the outer peripheral surface of the filter cartridge, but also control the distance between the baffle and the port of the filter cartridge, thereby adjusting the resistance of the air passing through the port of the filter cartridge. When the baffle is closer to the port of the filter cartridge, the impact force of the clean high-pressure air on the bottom of the inner cavity of the filter cartridge is greater, and thus the dust removal effect is more obvious. When there are more dust particles adhering to the filter cartridge, the distance between the baffle and the port of the filter cartridge can be adjusted closer, so as to effectively ensure that the dust particles on the filter cartridge are removed. When there are not many dust particles adhering to the filter cartridge, the distance between the baffle and the port of the filter cartridge can be increased. While ensuring that the clean high-pressure air has a certain impact force on the dust particles adhering to the filter cartridge, the air flow rate can be effectively increased to prevent the filter cartridge from deforming due to long-term impact of high-pressure air. Thus, it can be seen that by setting the baffle, the driving member can not only drive the filter cartridge to rotate to switch the positions between the top and bottom of the outer peripheral surface of the filter cartridge, but also drive the baffle to move axially to adjust the resistance of the air passing through the port of the filter cartridge, enabling the present invention to balance the dust removal effect and prevent the filter cartridge from deforming, producing an unexpected technical effect and eliminating a set of driving devices specifically for controlling the axial movement of the baffle;

[0024] 3. Further, the present invention sets the filtering component in an elastically rotatable connection mode, and a transmission member is arranged between the baffle and the filtering component. When the driving member drives the baffle to move axially, the baffle has an unexpected technical effect: the baffle can drive the transmission member to elastically rotate the filtering component and then impact the inner wall of the temporary storage cavity, thereby producing the beneficial effect of cleaning the dust particles adhering to the filtering component. Moreover, it is very convenient and there is no need to set up other special cleaning devices for cleaning the filtering component, which greatly improves the utilization rate of the driving member and the baffle, reduces the structure of the high-negative-pressure dust collector, and lowers the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0026] Figure 1 Structural schematic diagram of the high-negative-pressure dust collector facilitating ash cleaning provided by the embodiment of the present invention;

[0027] Figure 2 Structural schematic diagram of the high-negative-pressure dust collector facilitating ash cleaning from the first perspective inside the embodiment of the present invention;

[0028] Figure 3 Provided by the embodiment of the present invention Figure 2 Enlarged structural schematic diagram of part A in

[0029] Figure 4 Structural schematic diagram of the high-negative-pressure dust collector facilitating ash cleaning from the second perspective inside the embodiment of the present invention;

[0030] Figure 5 Provided by the embodiment of the present invention Figure 4 Enlarged structural schematic diagram of part B in

[0031] Figure 6 Internal structural schematic diagram of the high-negative-pressure dust collector facilitating ash cleaning when removing the hollow boss provided by the embodiment of the present invention;

[0032] Figure 7 Internal structural schematic diagram of the high-negative-pressure dust collector facilitating ash cleaning when removing the hollow boss and the filter cartridge provided by the embodiment of the present invention;

[0033] Figure 8 Provided by the embodiment of the present invention Figure 7 Enlarged structural schematic diagram of part C in

[0034] Figure 9Schematic cross-sectional structure diagram when the baffle provided by the embodiment of the present invention seals the port of the filter cartridge;

[0035] Figure 10 Provided by the embodiment of the present invention Figure 9 Enlarged structure schematic diagram of part D in

[0036] Figure 11 Provided by the embodiment of the present invention Figure 9 Enlarged structure schematic diagram of part E in

[0037] Figure 12 Provided by the embodiment of the present invention Figure 9 Enlarged structure schematic diagram of part F in

[0038] Figure 13 Schematic structure diagram when the components in the machine body are drawn out provided by the embodiment of the present invention;

[0039] Figure 14 Schematic structure diagram of the filter assembly and two transmission parts provided by the embodiment of the present invention;

[0040] Figure 15 Schematic structure diagram when the driven gear and the baffle are disassembled from the support shaft provided by the embodiment of the present invention;

[0041] Figure 16 Provided by the embodiment of the present invention Figure 15 Schematic structure diagram of another perspective of

[0042] Figure 17 Schematic structure diagram when the filter cartridge is disassembled from the support shaft provided by the embodiment of the present invention.

[0043] Explanation of reference numerals:

[0044] 1. Machine body; 101. Exhaust port; 102. Side plate; 103. Hollow boss; 1031. Air inlet; 104. Triangular plate; 105. Ventilation duct; 106. Temporary storage cavity; 107. Ash discharge hole; 108. Cylindrical cavity; 1081. Upper opening; 1082. Lower opening; 109. Arc hole; 2. Collection bucket; 3. Support shaft; 301. Thread; 4. Self-locking servo motor; 5. Driving gear; 6. Driven gear; 7. Limit block; 701. Ball; 702. Locking bolt; 8. Reinforcing plate; 9. Baffle; 901. Screw hole; 10. Insert rod; 11. Arc rod; 1101. Circular protrusion; 1102. Contact ball; 12. Return spring; 13. Upper limit rod; 14. Lower limit plate; 15. Filter assembly; 1501. Filter screen; 1502. Frame plate; 1503. Frame pad; 1504. Rotating shaft; 16. Filter cartridge; 17. Sliding plate. Detailed implementation manners

[0045] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0046] As Figure 1-17 shown, a high-negative-pressure dust collector facilitating dust cleaning provided by an embodiment of the present invention includes a machine body 1. An exhaust port 101 and an air inlet 1031 which are communicated with each other are formed in the machine body 1. A temporary storage cavity 106 is formed in the machine body 1 and located below the air inlet 1031. A cylindrical cavity 108 is formed in the machine body 1, the top of which is communicated with the air inlet 1031 and the bottom of which is communicated with the temporary storage cavity 106. A support shaft 3 coaxial with the cylindrical cavity 108 is fixedly installed in the machine body 1. A filter cartridge 16 rotatably sleeved on the support shaft 3 is inserted into the cylindrical cavity 108;

[0047] A slave gear 6 for blocking the port of the filter cartridge 16 is fixedly installed at one port of the filter cartridge 16, and the other port corresponds to the exhaust port 101. The high-pressure air entering from the air inlet 1031 is filtered by the top of the outer peripheral surface of the filter cartridge 16, and the dust particles in the air adhere to the top of the outer peripheral surface of the filter cartridge 16. A driving member for driving the filter cartridge 16 to rotate in the cylindrical cavity 108 is arranged in the machine body 1 so that the top of the outer peripheral surface of the filter cartridge 16 can be switched to the bottom and correspond to the temporary storage cavity 106;

[0048] A ventilation duct 105 communicating the exhaust port 101 with the temporary storage cavity 106 is further formed in the machine body 1. A filtering assembly 15 for covering the port of the ventilation duct 105 is arranged in the temporary storage cavity 106. A part of the high-pressure air filtered by the filter cartridge 16 flows out through the port of the filter cartridge 16 to the exhaust port 101, and a part of the high-pressure air impacts the bottom of the inner cavity of the filter cartridge 16 downward to blow the dust particles adhering to the bottom of the outer peripheral surface of the filter cartridge 16 into the temporary storage cavity 106. Then, after being filtered by the filtering assembly 15, the air flows to the exhaust port 101 through the ventilation duct 105 and is discharged.

[0049] The high-negative-pressure dust collector facilitating dust cleaning provided in this embodiment is used to filter the air containing dust particles to separate the air from the dust particles. The words related to directions and positions involved in this embodiment are relative to the attached drawings. Specifically, a hollow boss 103 is fixedly installed at the top of the machine body 1, and an air inlet 1031 is opened on the hollow boss 103. The air inlet 1031 is used for the air containing dust particles to enter the machine body 1. After being filtered by the filter cartridge 16, it is discharged to the outside through the exhaust port 101. The power source for the air flow is an air compressor, a centrifuge or other devices capable of generating high negative pressure, which is the prior art and will not be elaborated here. A cylindrical cavity 108 opened in the machine body 1 is used to accommodate the filter cartridge 16. An upper opening 1081 is opened at the top of the cylindrical cavity 108 to connect the cylindrical cavity 108 with the air inlet 1031, and a lower opening 1082 is opened at the bottom of the cylindrical cavity 108 to connect the cylindrical cavity 108 with the temporary storage cavity 106. Based on the settings of the upper opening 1081 and the lower opening 1082, when the filter cartridge 16 is inserted into the cylindrical cavity 108, the top and bottom of the outer peripheral surface of the filter cartridge 16 are both exposed, and the top of the outer peripheral surface of the filter cartridge 16 corresponds to the air inlet 1031. When the air containing dust particles enters the machine body 1 from the air inlet 1031, it will contact the top of the outer peripheral surface of the filter cartridge 16, so that it is filtered by the filter cartridge 16. The filtered dust particles adhere to the top of the outer peripheral surface of the filter cartridge 16, and the clean air enters the inner cavity of the filter cartridge 16. At the same time, the bottom of the outer peripheral surface of the filter cartridge 16 corresponds to the temporary storage cavity 106, and the filter cartridge 16 has two ports. One port is blocked by the slave gear 6 and cannot circulate air, and the other port corresponds to and is connected to the exhaust port 101. More importantly, a ventilation duct 105 connecting the temporary storage cavity 106 with the exhaust port 101 is also opened in the machine body 1, so that two passages connected to the exhaust port 101 are formed. When the clean high-pressure air enters the inner cavity of the filter cartridge 16, a part of the air flows into the exhaust port 101 through the port of the filter cartridge 16 and is discharged, and the other part of the air impacts the bottom of the inner cavity of the filter cartridge 16 downward and penetrates through the whole filter cartridge 16 and then enters the temporary storage cavity 106, and then enters the exhaust port 101 through the ventilation duct 105 and is discharged. And the filter assembly 15 arranged in the temporary storage cavity 106 can filter the air entering the temporary storage cavity 106 to prevent dust particles from entering the exhaust port 101 through the ventilation duct 105 and being discharged.

[0050] More importantly, a driving member for driving the filter cartridge 16 to rotate is provided inside the machine body 1. The filter cartridge 16 is rotatably arranged on the support shaft 3. The support shaft 3 penetrates through the cylindrical cavity 108 and is fixedly connected to the machine body 1. The filter cartridge 16, the support shaft 3, and the cylindrical cavity 108 are coaxial. Under the driving action of the driving member, the filter cartridge 16 can be driven to rotate around the axis of the support shaft 3, so as to change the angle of the filter cartridge 16 in the cylindrical cavity 108. The rotation angle of the filter cartridge 16 is an integer multiple of 180°. In this way, when the driving member drives the filter cartridge 16 to rotate once, the top and bottom positions of the outer peripheral surface of the filter cartridge 16 can be switched. Each time, the top part of the outer peripheral surface of the filter cartridge 16 plays a filtering role, and the bottom part of the outer peripheral surface of the filter cartridge 16 is cleaned each time.

[0051] Based on the above structural arrangement, its working principle is as follows: First, the driving member rotates the filter cartridge 16 by an integer multiple of 180°. At this time, the top of the outer peripheral surface of the filter cartridge 16 is switched to the bottom, and the dust particles adhering to the top of the outer peripheral surface of the filter cartridge 16 also move to the bottom of the filter cartridge 16 following the rotation of the filter cartridge 16. The bottom of the outer peripheral surface of the filter cartridge 16 is switched to the top for the next filtering work. At this time, the top of the outer peripheral surface of the filter cartridge 16 is in a clean state, and the bottom of the outer peripheral surface of the filter cartridge 16 is in a state of adhering to dust particles. Then the driving member stops working, and due to the self-locking performance of the driving member, the filter cartridge 16 will not rotate during filtering. Next, when the high-pressure air containing dust particles enters through the air inlet 1031, the high-pressure air contacts the top of the outer peripheral surface of the filter cartridge 16, so that the dust particles are filtered and continuously adhere to the top of the outer peripheral surface of the filter cartridge 16. The clean high-pressure air formed after filtering enters the inner cavity of the filter cartridge 16. Since there are two channels leading to the exhaust port 101, part of the clean high-pressure air flows into the exhaust port 101 and is discharged through the port of the filter cartridge 16, and the other part impacts the bottom of the inner cavity of the filter cartridge 16. Under the impact of the high-pressure air, the dust particles adhering to the bottom of the outer peripheral surface of the filter cartridge 16 are removed and fall into the temporary storage cavity 106. Then the high-pressure air entering the temporary storage cavity 106 flows into the exhaust port 101 after being filtered by the filter assembly 15. When filtering next time, the driving member rotates the temporary storage cavity 106 forward or backward by an integer multiple of 180° again to switch the top and bottom of the outer peripheral surface of the filter cartridge 16, so that the dust particles adhering to the filter cartridge 16 can be cleaned by the clean high-pressure air during the next filtering, enabling the filter cartridge 16 to achieve self-cleaning while filtering. There is no need to set multiple groups of filter cartridges 16 to cooperate with each other in the gas flow direction, and only one group of filter cartridges 16 is required, which can reduce the number of filter cartridges used, greatly improve the utilization rate of the filter cartridges, and avoid waste.

[0052] It can be seen that in the present invention, the filter cartridge 16 is arranged in a form that can be driven by a driving member to rotate, so that the top and bottom of the outer peripheral surface of the filter cartridge 16 can be switched with each other. Each time during filtration, it is the top of the outer peripheral surface of the filter cartridge 16 that performs filtration. Therefore, when more dust particles adhere to the top of the outer peripheral surface of the filter cartridge 16, the driving member can switch the top of the outer peripheral surface of the filter cartridge 16 to the bottom. At this time, the dust particles are located at the bottom of the outer peripheral surface of the filter cartridge 16, and the top of the outer peripheral surface of the filter cartridge 16 becomes clean to filter the air next time. At the same time, through the improvement of the internal structure of the machine body 1, the filtered high-pressure air has two discharge channels after entering the inner cavity of the filter cartridge 16. One of them can penetrate through the entire filter cartridge 16 so as to generate an impact force on the bottom of the inner cavity of the filter cartridge 16. Under the action of the impact force, the dust particles adhering to the bottom of the outer peripheral surface of the filter cartridge 16 can be removed and fall into the temporary storage cavity 106 to be collected. Then, the high-pressure air entering the temporary storage cavity 106 flows out through the exhaust port 101 after being filtered by the filter assembly 15. Therefore, when repeatedly switching the positions of the top and bottom of the outer peripheral surface of the filter cartridge 16, not only can it be ensured that the top of the outer peripheral surface of the filter cartridge 16 is clean each time to filter the air, but also the adhered dust particles on the filter cartridge 16 can be continuously cleaned by the clean high-pressure air. There is no need to arrange multiple groups of filter cartridges 16 in the gas flow direction, and only one centrifuge is needed to improve the negative pressure power. Therefore, in the case of still only using one centrifuge to provide negative pressure power, only one group of filter cartridges needs to be arranged in the gas flow direction, and this group of filter cartridges can filter the air and clean itself with the filtered air each time during air filtration, so as to improve the utilization rate of the filter cartridges, avoid waste of filter cartridges, and effectively solve the deficiencies in the prior art.

[0053] In this embodiment, the driving member includes a self-locking servo motor 4 installed on the machine body 1 and a driving gear 5 coaxially connected to the output shaft of the self-locking servo motor 4. The driving gear 5 meshes with the driven gear 6, and the self-locking servo motor 4 drives the driving gear 5 to rotate, thereby driving the driven gear 6 and the filter cartridge 16 to rotate. The self-locking servo motor 4 is fixedly installed in the machine body 1 by bolts. The self-locking function of the self-locking servo motor 4 is a prior art and will not be elaborated. The self-locking servo motor 4 can rotate forward and backward.

[0054] Further, a baffle 9 is provided at the port of the filter cartridge 16 corresponding to the exhaust port 101. The baffle 9 can block the port of the filter cartridge 16. A thread 301 is provided on the outer circumferential surface of the support shaft 3. A threaded hole 901 screwed with the thread 301 is opened at the center of the baffle 9. A plurality of insertion rods 10 arranged circumferentially and slidably inserted into the baffle 9 are fixedly installed on the filter cartridge 16. During the process of driving the filter cartridge 16 to rotate by the driving member, the baffle 9 is driven to rotate self - axially so that the baffle 9 moves axially, thereby adjusting the resistance of the air passing through the port of the filter cartridge 16. Specifically, the position of the baffle 9 in the axial direction of the support shaft 3 determines the resistance of the air flowing out of the port of the filter cartridge 16. When the baffle 9 is closer to the filter cartridge 16, the resistance of the air flowing out of the port of the filter cartridge 16 is greater, and vice versa. The baffle 9 plays a role in adjusting the resistance of the air passing through the port of the filter cartridge 16. The plurality of insertion rods 10 are circumferentially arranged around their axis and slidably inserted into the baffle 9. Through the fixed connection between the insertion rods 10 and the port of the filter cartridge 16, when the filter cartridge 16 rotates self - axially, it can drive the plurality of insertion rods 10 to rotate synchronously. The plurality of insertion rods 10 then drive the baffle 9 to rotate synchronously. Based on the screwing of the threaded hole 901 and the thread 301, when the baffle 9 rotates, it can move axially along the support shaft 3, thereby changing the distance between the baffle 9 and the port of the filter cartridge 16. When the distance is zero, the baffle 9 blocks the port of the filter cartridge 16, and the high - pressure air entering the inner cavity of the filter cartridge 16 will all be used to impact the bottom of the inner cavity of the filter cartridge 16.

[0055] Through the drive of the drive member, the present invention can not only switch the positions between the top and the bottom of the outer circumferential surface of the filter cartridge 16, but also control the distance between the baffle 9 and the port of the filter cartridge 16, thereby adjusting the resistance of the air passing through the port of the filter cartridge 16. When the baffle 9 is closer to the port of the filter cartridge 16, the greater the force of the clean high - pressure air impacting the bottom of the inner cavity of the filter cartridge 16, and thus the more obvious the dust - cleaning effect. When there are more dust particles adhering to the filter cartridge 16, the distance between the baffle 9 and the port of the filter cartridge 16 can be adjusted closer, so as to effectively ensure that the dust particles on the filter cartridge 16 are removed. When there are not many dust particles adhering to the filter cartridge 16, the distance between the baffle 9 and the port of the filter cartridge 16 can be increased. While ensuring that the clean high - pressure air has a certain impact force on the dust particles adhering to the filter cartridge 16, it can effectively increase the air flow rate and prevent the filter cartridge 16 from deforming due to long - term impact of high - pressure air. Thus, it can be seen that by providing the baffle 9, the drive member can not only drive the filter cartridge 16 to rotate to switch the positions between the top and the bottom of the outer circumferential surface of the filter cartridge 16, but also drive the baffle 9 to move axially to adjust the resistance of the air passing through the port of the filter cartridge 16. The present invention takes into account both the dust - cleaning effect and the prevention of the deformation of the filter cartridge 16, producing an unexpected technical effect and also eliminating a set of driving devices dedicated to controlling the axial movement of the baffle 9.

[0056] In this embodiment, a reinforcing plate 8 is fixedly installed at both ends of the inner cavity of the filter cartridge 16. The two reinforcing plates 8 are rotatably inserted into the support shaft 3. The inserting rod 10 is fixedly installed on the reinforcing plate 8 close to the baffle 9. The driven gear 6 is fixedly and sealingly connected to the other reinforcing plate 8. The two reinforcing plates 8 are located in the inner cavity of the filter cartridge 16 and can play a role in supporting the filter cartridge 16. When the driven gear 6 is driven to rotate by the driving gear 5, the driven gear 6 first drives the reinforcing plate 8 to rotate, and the reinforcing plate 8 then drives the filter cartridge 16 to rotate, so as to effectively prevent the filter cartridge 16 from deforming when being driven to rotate.

[0057] Furthermore, two symmetrically arranged limiting blocks 7 are fixedly installed on the support shaft 3. A plurality of balls 701 are rotatably embedded in the opposite surfaces of the two limiting blocks 7. The balls 701 on one of the limiting blocks 7 abut against the side surface of the driven gear 6, and the balls 701 on the other limiting block 7 abut against the side surface of the reinforcing plate 8, so that the filter cartridge 16 will not move axially when rotating. Specifically, the two limiting blocks 7 are used to limit the filter cartridge 16, so that the filter cartridge 16 can only rotate and cannot move axially. The arrangement of the balls 701 can effectively reduce the friction force received by the filter cartridge 16 when rotating. The limiting block 7 also includes a locking bolt 702 arranged in a threaded manner. The end of the locking bolt 702 abuts against the support shaft 3 in a pressing manner. Through the screwing of the locking bolt 702 with the limiting block 7 and the pressing between the locking bolt 702 and the support shaft 3, the limiting block 7 can be fixedly installed on the support shaft 3 and is convenient for disassembling the limiting block 7 to facilitate the installation of the filter cartridge 16. A jack screwed with the locking bolt 702 can also be opened on the support shaft 3, so as to effectively increase the firmness of the limiting block 7.

[0058] In this embodiment, the distance between the outer peripheral surface of the filter cartridge 16 and the inner wall of the cylindrical cavity 108 is between 0 and 1 mm, so that the filter cartridge 16 will not contact the inner wall of the cylindrical cavity 108 during the rotation process, and at the same time, air will not flow out in large quantities between the filter cartridge 16 and the inner wall of the cylindrical cavity 108. However, even if air flows out between the filter cartridge 16 and the inner wall of the cylindrical cavity 108, it will flow into the temporary storage cavity 106 and then be filtered by the filtering assembly 15, and the phenomenon that air is discharged from the exhaust port 101 without being filtered will not occur. The advantage of the filter cartridge 16 not contacting the inner wall of the cylindrical cavity 108 during the rotation process is as follows: First, it avoids the wear of the filter cartridge 16; Second, for the dust particles that are not adhered to the outer peripheral surface of the filter cartridge 16 after being filtered, they can fall into the temporary storage cavity 106 between the filter cartridge 16 and the inner wall of the cylindrical cavity 108 during the rotation process of the filter cartridge 16 or when the filter cartridge 16 is not rotating, preventing the dust particles from accumulating above the filter cartridge 16.

[0059] In this embodiment, since the filtering component 15 also plays a filtering role, a large amount of dust particles will adhere to the filtering component 15 during long-term use. If not cleaned, it will cause difficulty in air flow. How to improve the convenience of cleaning the filtering component 15 is also one of the improvement directions of the present invention. The filtering component 15 is elastically and rotatably installed on the inner wall of the temporary storage cavity 106. The elastic rotational force of the filtering component 15 is directed towards the outside of the temporary storage cavity 106, so that in the initial state, the filtering component 15 is elastically pressed and fitted with the inner wall of the temporary storage cavity 106 to ensure that the air flowing out of the temporary storage cavity 106 can be filtered by the filtering component 15. A transmission member is provided between the baffle 9 and the filtering component 15. During the process of the driving member driving the baffle 9 to move away from the filter cartridge 16, the transmission member can be driven to first push the filtering component 15 to elastically rotate. When the filtering component 15 rotates to the limit state, the filtering component 15 disengages from the transmission member and impacts the inner wall of the temporary storage cavity 106 under the action of the elastic rotational force, so as to remove the dust particles adhering to the filtering component 15. Specifically, during the process of the baffle 9 axially moving away from the filter cartridge 16, within a set specific distance, the transmission member cannot drive the filtering component 15 to elastically rotate. At this time, the filtering component 15 always fits with the inner wall of the temporary storage cavity 106, so that the filtering component 15 always plays a filtering role. When the distance that the baffle 9 moves is greater than the set specific distance, the baffle 9 can drive the transmission member to push the filtering component 15 to elastically rotate towards the inside of the temporary storage cavity 106. When the filtering component 15 rotates to the limit state, the transmission force between the transmission member and the filtering component 15 disappears, so that the elastic force received by the filtering component 15 is released, enabling the filtering component 15 to quickly rotate towards the inner wall direction of the temporary storage cavity 106 and impact the temporary storage cavity 106. Under the blowing action of the wind force and the vibration action of the impact force during the rotation process, the dust particles adhering to the filtering component 15 are separated from the filtering component 15, thereby realizing the cleaning of the filtering component 15.

[0060] It can be seen that by setting the filtering component 15 in an elastically rotatable connection manner and providing a transmission member between the baffle 9 and the filtering component 15, when the driving member drives the baffle 9 to axially move, the baffle 9 achieves an unexpected technical effect: the baffle 9 can drive the transmission member to elastically rotate the filtering component 15 and then impact the inner wall of the temporary storage cavity 106, thereby producing the beneficial effect of cleaning the dust particles adhering to the filtering component 15. Moreover, it is very convenient and there is no need to set up other special cleaning devices for cleaning the filtering component 15, which greatly improves the utilization rate of the driving member and the baffle 9, reduces the structure of the high negative pressure dust collector, and lowers the manufacturing cost.

[0061] In this embodiment, the transmission member includes an arc rod 11 elastically rotatably installed in the body 1 and a sliding plate 17 elastically slidably inserted on the filter assembly 15. One end of the arc rod 11 elastically abuts against the side of the baffle 9 and the other end extends into the temporary storage chamber 106. An abutment ball 1102 abutting against the sliding plate 17 is fixedly installed on the arc rod 11 located in the temporary storage chamber 106. During the movement of the baffle 9, the arc rod 11 is pushed to rotate elastically so that the abutment ball 1102 continues to approach and push the sliding plate 17 to drive the filter assembly 15 to rotate elastically. When the filter assembly 15 rotates to the extreme state, the abutment ball 1102 pushes the sliding plate 17 to slide toward the inside of the filter assembly 15 so that the sliding plate 17 and the abutment ball 1102 are staggered. Specifically, the filter assembly 15 includes a filter screen 1501, a frame plate 1502, a frame pad 1503, and a rotating shaft 1504. The filter screen 1501 is fixedly mounted on the side of the frame plate 1502 away from the inner wall of the temporary storage chamber 106 and covers the frame opening on the frame plate 1502. The frame pad 1503 is fixedly mounted on the side of the frame plate 1502 close to the inner wall of the temporary storage chamber 106 and is used to fit with the inner wall of the temporary storage chamber 106, so as to seal the port of the ventilation duct 105 and buffer the filter assembly 15 from impacting the temporary storage chamber 106. Function, 1054 is fixedly installed at one end of the frame plate 1502, two piers are fixedly installed on the inner wall of the temporary storage chamber 106, the frame plate 1502 is located between the two piers, and the two ends of the rotating shaft 1504 are rotated and plugged in the two piers in a one-to-one manner, a torsion spring (not shown in the figure) is installed between the rotating shaft 1504 and the pier, the torsion spring is fixedly connected to the rotating shaft 1504, and the end of the torsion spring is clamped with the pier, and the torsion force of the torsion spring is used to realize the elastic rotation of the frame plate 1502, thereby realizing the elastic rotation of the filter assembly 15. The sliding plate 17 is elastically slidably plugged into the side of the frame plate 1502, specifically, the side of the frame plate 1502 is provided with a sliding hole (not shown in the figure) for the sliding plate 17 to slide into, and a compression spring (not shown in the figure) is fixedly connected between the sliding hole and the sliding plate 17, and the elastic force of the compression spring is used to realize the elastic sliding of the sliding plate 17. In the initial state, there is no contact between the abutment ball 1102 and the sliding plate 17, so that when the baffle 9 moves within a set specific range and pushes the arc rod 11 to rotate, the abutment ball 1102 will not contact the sliding plate 17 and will not cause the filter assembly 15 to rotate. Within this range, the baffle 9 can stably adjust the resistance encountered by air when passing through the port of the filter cartridge 16 and the filter assembly 15 will not lose its filtering effect.When the movement range of the baffle 9 exceeds the set specific range, the baffle 9 pushes the arc rod 11 to continue to rotate so that the abutment ball 1102 abuts against the sliding plate 17 and pushes the sliding plate 17 to drive the filter assembly 15 to synchronously rotate elastically toward the inside of the temporary storage chamber 106. At this time, the torsion spring continuously stores energy, and the sliding plate 17 continuously slides toward the inside of the frame plate 1502. When the energy storage of the torsion spring reaches a certain level, the filter assembly 15 rotates to the limit state, and then the abutment ball 1102 further pushes the sliding plate 17 to slide toward the frame plate 1502 until the sliding plate 17 and the abutment ball 1102 are offset. Then the elastic force of the torsion spring is released and drives the filter assembly 15 to rotate toward the inner wall of the temporary storage chamber 106 so that the filter assembly 15 hits the inner wall of the temporary storage chamber 106.

[0062] Among them, an arc hole 109 concentric with the arc rod 11 is opened inside the body 1, and the arc rod 11 passes through the arc hole 109. A lower limit plate 14 plugged with the arc rod 11 is fixedly installed in the body 1, and an upper limit rod 13 is fixedly installed on the arc rod 11. A reset spring 12 is sleeved on the arc rod 11, and the reset spring 12 is located between the upper limit rod 13 and the lower limit plate 14. When the baffle 9 moves in a direction away from the filter cartridge 16 to push the arc rod 11 to rotate, the arc rod 11 drives the upper limit rod 13 to rotate synchronously toward the lower limit plate 14, so that the upper limit rod 13 continuously compresses the reset spring 12 to make the reset spring 12 stores energy, and after the filter assembly 15 hits the temporary storage chamber 106, the driving member drives the baffle 9 to move towards the filter cartridge 16. At this time, the elastic force of the reset spring 12 is gradually released, and drives the upper limit rod 13 and the arc rod 11 to rotate toward the baffle 9. The elastic force of the reset spring 12 is greater than the sliding resistance of the sliding plate 17, so that the arc rod 11 drives the abutment ball 1102 to squeeze the sliding plate 17 toward the inside of the frame plate 1502 to slide elastically during the rotation toward the baffle 9, so that the abutment ball 1102 passes over the sliding plate 17, thereby preparing for the abutment ball 1102 to push the filter assembly 15 next time.

[0063] In this embodiment, the end of the arc rod 11 close to the baffle plate 9 is a circular protrusion 1101, and the circular protrusion 1101 abuts against the baffle plate 9 to reduce the contact area between the arc rod 11 and the baffle plate 9, thereby reducing friction.

[0064] In this embodiment, there are two cylindrical cavities 108 and two filter cartridges 16, which are inserted into each other in one-to-one correspondence. The two cylindrical cavities 108 are arranged side by side at intervals. Baffles 9 and driven gears 6 are arranged on both of the two filter cartridges 16. The driving member drives the two filter cartridges 16 to rotate simultaneously. The structural configurations and connection methods of the two filter cartridges 16 are exactly the same, and they are also rotatably installed on the corresponding support shafts 3. Specifically, the space between the two cylindrical cavities 108 is solid, and the top of the solid between the two cylindrical cavities 108 is a triangular plate 104, so that air can be diverted to the two filter cartridges 16. The arrangement of the two filter cartridges 16 can increase the filtration area, thereby improving the dust removal efficiency of the dust collector. At the same time, the driving gear 5 is located between the two driven gears 6 and meshes with the two driven gears 6 simultaneously, so that when the driving gear 5 rotates, it can drive the two driven gears 6 to rotate in the same direction at the same time, and further enable the two baffles 9 to move synchronously, so that the distances between the two baffles 9 and the ports of the two driven gears 6 are also the same.

[0065] Further, the number of transmission members is also two and corresponds to the two filter cartridges 16 one by one. The filtering assembly 15 is located between two arc-shaped rods 11 on the two transmission members. The number of sliding plates 17 elastically and slidably inserted on the filtering assembly 15 is two and abuts against two abutting balls 1102 on the two arc-shaped rods 11 in one-to-one correspondence. The two arc-shaped rods 11 abut against the two baffles 9 in one-to-one correspondence. Since the two baffles 9 move synchronously, the two arc-shaped rods 11 also rotate synchronously, so that the two abutting balls 1102 can push the two sliding plates 17 at the same time. The two sliding plates 17 are located on opposite sides of the frame-shaped plate 1502, which can effectively improve the force balance of the filtering assembly 15, so that the arc-shaped rod 11 can push the filtering assembly 15 to rotate more stably.

[0066] In this embodiment, a dust discharge hole 107 is opened at the top of the temporary storage cavity 106, and a collection bucket 2 is connected below the dust discharge hole 107. The dust particles entering the temporary storage cavity 106 finally fall into the collection bucket 2 and are centrally collected.

[0067] Among them, the machine body 1 further includes a side plate 102 that is detachably installed. One end of the support shaft 3 is fixedly connected to the side plate 102 by bolts. When it is necessary to remove the filter cartridge 16, first remove the side plate 102, and then remove the limit block 7 to pull out the filter cartridge 16 from the support shaft 3.

[0068] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A high negative pressure dust collector facilitating ash cleaning, comprising a machine body (1), wherein an exhaust port (101) and an air inlet (1031) which are communicated with each other are formed in the machine body (1), and it is characterized in that: A temporary storage cavity (106) is formed in the machine body (1) below the air inlet (1031). A cylindrical cavity (108) is formed in the machine body (1), the top of which is communicated with the air inlet (1031) and the bottom of which is communicated with the temporary storage cavity (106). A support shaft (3) coaxial with the cylindrical cavity (108) is fixedly installed in the machine body (1). A filter cartridge (16) rotatably sleeved on the support shaft (3) is inserted into the cylindrical cavity (108); One port of the filter cartridge (16) is fixedly installed with a slave gear (6) for blocking the port of the filter cartridge (16), and the other port corresponds to the exhaust port (101). The high-pressure air entering from the air inlet (1031) is filtered by the top of the outer peripheral surface of the filter cartridge (16), and the dust particles in the air adhere to the top of the outer peripheral surface of the filter cartridge (16). A driving member for driving the filter cartridge (16) to rotate in the cylindrical cavity (108) is arranged in the machine body (1) so that the top of the outer peripheral surface of the filter cartridge (16) can be switched to the bottom and correspond to the temporary storage cavity (106); A ventilation duct (105) connecting the exhaust port (101) and the temporary storage cavity (106) is further formed in the machine body (1). A filter assembly (15) for covering the port of the ventilation duct (105) is arranged in the temporary storage cavity (106). Part of the high-pressure air filtered by the filter cartridge (16) flows out through the port of the filter cartridge (16) to the exhaust port (101), and part of it impacts the bottom of the inner cavity of the filter cartridge (16) downward to blow off the dust particles adhering to the bottom of the outer peripheral surface of the filter cartridge (16) into the temporary storage cavity (106). Then, the air passes through the filter assembly (15) and flows through the ventilation duct (105) to the exhaust port (101) and is discharged; The distance between the outer peripheral surface of the filter cartridge (16) and the inner wall of the cylindrical cavity (108) is between 0 and 1 mm.

2. The high negative pressure dust collector facilitating dust cleaning according to claim 1, wherein: The driving member includes a self-locking servo motor (4) installed on the machine body (1) and a driving gear (5) coaxially connected to the output shaft of the self-locking servo motor (4). The driving gear (5) meshes with the slave gear (6), and the self-locking servo motor (4) drives the driving gear (5) to rotate, thereby driving the slave gear (6) and the filter cartridge (16) to rotate.

3. The high negative pressure dust collector facilitating dust cleaning according to claim 1, wherein: A baffle (9) is arranged at the port of the filter cartridge (16) corresponding to the exhaust port (101). The baffle (9) can block the port of the filter cartridge (16). A thread (301) is arranged on the outer circumferential surface of the support shaft (3). A threaded hole (901) screwed with the thread (301) is formed in the center of the baffle (9). A plurality of insertion rods (10) arranged circumferentially and slidably inserted into the baffle (9) are fixedly installed on the filter cartridge (16). During the process of the driving member driving the filter cartridge (16) to rotate, the baffle (9) is driven to rotate itself, so that the baffle (9) moves axially to adjust the resistance of the air passing through the port of the filter cartridge (16).

4. The high negative pressure dust collector facilitating dust cleaning according to claim 3, wherein: A reinforcing plate (8) is fixedly mounted at both ends of the inner cavity of the filter cartridge (16); the two reinforcing plates (8) are rotatably plugged into the support shaft (3); and the plug rod (10) is fixedly mounted on the reinforcing plate (8) close to the baffle (9).

5. The high negative pressure dust collector facilitating dust cleaning according to claim 4, wherein: Two symmetrically arranged limit blocks (7) are fixedly mounted on the support shaft (3), and a plurality of balls (701) are rotatably embedded in the opposite surfaces of the two limit blocks (7), wherein the balls (701) on one of the limit blocks (7) abut against the side of the gear (6), and the balls (701) on the other limit block (7) abut against the side of the reinforcing plate (8), so that the filter cartridge (16) will not move axially when rotating.

6. The high negative pressure dust collector facilitating dust cleaning according to claim 3, wherein: The filter assembly (15) is elastically rotatably mounted on the inner wall of the temporary storage chamber (106); in an initial state, the filter assembly (15) and the inner wall of the temporary storage chamber (106) are elastically pressed and fitted; a transmission member is provided between the baffle plate (9) and the filter assembly (15); in the process of the drive member driving the baffle plate (9) to move in a direction away from the filter cartridge (16), the drive member can first drive the transmission member to elastically rotate the filter assembly (15); when the filter assembly (15) rotates to an extreme state, the filter assembly (15) is separated from the transmission member and collides with the inner wall of the temporary storage chamber (106) under the action of the elastic rotation force, so that dust particles adhered to the filter assembly (15) are removed.

7. The high negative pressure dust collector facilitating dust cleaning according to claim 6, wherein: The transmission member comprises an arc rod (11) elastically rotatably mounted in the machine body (1) and a sliding plate (17) elastically slidably plugged into the filter assembly (15); one end of the arc rod (11) elastically abuts against the side of the baffle (9) and the other end extends into the temporary storage chamber (106); an abutment ball (1102) abutting against the sliding plate (17) is fixedly mounted on the arc rod (11) located in the temporary storage chamber (106); during the movement of the baffle (9), the arc rod (11) is pushed to elastically rotate so that the abutment ball (1102) continuously approaches and pushes the sliding plate (17) to drive the filter assembly (15) to elastically rotate; when the filter assembly (15) rotates to an extreme state, the abutment ball (1102) pushes the sliding plate (17) to slide toward the inside of the filter assembly (15) so that the sliding plate (17) and the abutment ball (1102) are staggered.

8. The high negative pressure dust collector facilitating dust cleaning according to claim 7, wherein: The cylindrical cavities (108) and filter cartridges (16) are both two and plugged in one-to-one. The two cylindrical cavities (108) are arranged side by side and spaced apart. The two filter cartridges (16) are both provided with baffles (9) and driven gears (6). The driving member drives the two filter cartridges (16) to rotate simultaneously.

9. The high negative pressure dust collector facilitating dust cleaning according to claim 8, characterized in that: The number of the transmission members is also two and corresponds one-to-one with the two filter cartridges (16); the filter assembly (15) is located between the two arc rods (11) on the two transmission members; the number of the elastically slidably inserted sliding plates (17) on the filter assembly (15) is two and corresponds one-to-one with the two abutment balls (1102) on the two arc rods (11).

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