Bag cleaning device and method for bag-type dust collector

Abstract

The invention discloses a cloth bag cleaning device and method for a cloth bag dust remover. The cloth bag cleaning device comprises a dust remover body, and a pulse cleaning mechanism, a bag shaking mechanism and a deslagging mechanism are arranged in the dust remover body; the dust remover main body comprises a dust removing cylinder, a dust removing cloth bag and an opening and closing electromagnetic valve, an air inlet is formed in the side face of the dust removing cylinder, an air outlet and a back-flushing opening are formed in the top of the dust removing cylinder, and an ash discharging opening is formed in the bottom of the dust removing cylinder; the bag shaking mechanism comprises a first motor, a cam, a rocker, a supporting frame and a swing table and is installed at the lower end of the dust collection bag. The bag-type dust collector has the advantages of being high in cleaning efficiency and thorough in cleaning, and the problem that in the prior art, a dust collecting bag of a bag-type dust collector is single in cleaning means, and consequently the bag is difficult to clean is solved.

Description

Technical Field

[0001] The invention relates to the technical field of dust collector bag cleaning, and in particular to a bag cleaning device and method for a bag dust collector. Background Art

[0002] As a common industrial dust removal equipment, bag filter is widely used in metallurgy, chemical industry, cement, electric power and other industries. Its main function is to remove dust from flue gas by filtering to achieve the purpose of air purification. However, during long-term operation, a large amount of dust will accumulate on the surface of the bag, which will not only reduce the filtration efficiency, but also increase the operating resistance of the system, and even cause equipment failure in severe cases.

[0003] At present, the traditional cleaning method of bag dust collector is mainly recoil airflow cleaning, which uses reverse airflow to impact the bags to make the dust leave the bags. Although reverse airflow cleaning can effectively remove the dust on the bags, due to the uneven distribution of airflow, the cleaning effect is better at the top of the dust bag, and the airflow pressure near the bottom is insufficient, which may lead to incomplete cleaning. Therefore, a bag cleaning device and method for bag dust collector are needed to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a bag cleaning device and method for a bag dust collector, which has the advantages of high cleaning efficiency and thoroughness, and solves the problem that the dust bag cleaning process of the bag dust collector in the prior art has a single means, which makes it difficult to clean the bags.

[0005] To achieve the above object, the present invention provides the following technical solution: a bag cleaning device for a bag dust collector, comprising a dust collector body, wherein a pulse cleaning mechanism, a bag shaking mechanism and a slag discharge mechanism are arranged in the dust collector body; The dust collector body includes a dust collecting cylinder, a dust collecting bag, and an opening and closing solenoid valve. The side of the dust collecting cylinder is provided with an air inlet, the top of the dust collecting cylinder is provided with an air outlet and a recoil outlet, and the bottom of the dust collecting cylinder is provided with an ash outlet; The pulse cleaning mechanism comprises a transfer box, a pulse solenoid valve, a bronchial tube and a telescopic nozzle, and the pulse cleaning mechanism is installed in the recoil port; The bag shaking mechanism comprises a first motor, a cam, a rocker, a support frame and a rocking platform, and the bag shaking mechanism is installed at the lower end of the dust removal bag; The slag discharge mechanism comprises a slag discharge box, a second motor and a rotating slag discharge wheel, and the slag discharge mechanism is installed at the bottom of the ash discharge port.

[0006] As a preferred bag cleaning device of a bag dust collector of the present invention, a partition is arranged in the dust removal cylinder, a piston cavity is arranged on the upper end surface of the partition, a piston ring cooperating with the piston cavity is fixedly mounted on the top of the dust bag, a compression spring is arranged in the piston cavity, the dust bag and the partition are elastically connected by the compression spring, a limiting ring is arranged on the top of the piston cavity, a positioning groove is arranged on the upper end surface of the swing table, and the bottom of the dust bag is inserted into the positioning groove and fixed to the swing table.

[0007] As a preferred bag cleaning device of a bag dust collector of the present invention, support rings are evenly arranged in the dust bag, connecting ropes for fixing the support rings are arranged between the support rings, the support rings are made of stainless steel, and the connecting ropes are made of nylon.

[0008] As a preferred bag cleaning device of a bag dust collector of the present invention, the support frame is fixedly installed in the dust removal cylinder, the upper end surface of the support frame is provided with a rotating shaft, the rocker is provided with an axial hole matching the rotating shaft, the cam is installed on the output shaft of the first motor, the upper end surface edge of the cam is provided with an eccentric shaft, the rocker is provided with a sliding groove that slidably matches the eccentric shaft, the rocker is provided with a sliding hole at the end away from the sliding groove, and the bottom of the rocking platform is provided with a sliding rod matching the sliding hole.

[0009] As a preferred bag cleaning device of a bag dust collector of the present invention, the bottom of the swing platform is a spherical top structure, the inner end surface of the dust removal cylinder is provided with a guide frame, the bottom of the rocker is provided with a reinforcing rod slidably matched with the sliding rod, and the contact surface between the guide frame and the swing platform is a slope structure.

[0010] As a preferred bag cleaning device of a bag dust collector of the present invention, a guide groove is provided on the side of the sliding rod, a first ball matching the guide groove is provided in the sliding hole, and a second ball in sliding contact with the swing platform is provided on the guide frame.

[0011] As a preferred bag cleaning device of a bag dust collector of the present invention, the inner wall of the dust removal cylinder is provided with a flapping frame, the flapping frame is a hollow cylindrical structure, and the diameter of the flapping frame gradually decreases from the upper and lower ends to the center.

[0012] As a preferred bag cleaning device of a bag dust collector of the present invention, the pulse solenoid valve is installed at the air inlet end of the transfer box, the bronchial pipe is connected with the transfer box, the telescopic nozzle is installed at the lower end of the bronchial pipe, and the telescopic nozzle is located directly above the dust bag, the telescopic nozzle includes a nozzle seat, a nozzle, a telescopic bellows and a tension spring, the telescopic bellows is fixedly installed between the nozzle seat and the nozzle, and the nozzle seat and the nozzle are elastically connected by a tension spring.

[0013] As a preferred bag cleaning device of a bag dust collector of the present invention, the top of the slag discharge box is provided with a feed port connected with the ash discharge port, the bottom of the slag discharge box is provided with a discharge port, the rotating slag discharge wheel is installed on the output shaft of the second motor, and the side wall of the rotating slag discharge wheel is provided with blades that fit with the inner end surface of the slag discharge box.

[0014] A bag cleaning method for a bag dust collector comprises the following steps: Step 1: Pulse recoil: generate pulse airflow through the pulse cleaning mechanism to recoil the dust bag; Step 2: Shake the dust to remove dust. The dust bag is driven to swing by the bag shaking mechanism, so that the dust bag shakes at a high frequency, thereby shaking off the dust on the surface of the dust bag; Step 3: sedimentation and slag discharge. After the equipment recoil and shake are completed, the equipment is left to stand for a period of time to allow the dust in the equipment to settle to the ash discharge port. The slag discharge structure is started to discharge the dust in the dust collector from the slag discharge port.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention realizes efficient cleaning of dust on the surface of the bag by cooperating with the pulse cleaning mechanism and the bag shaking mechanism. When the pulse airflow is sprayed into the dust bag through the telescopic nozzle, the high-pressure airflow generated instantly will form a strong recoil effect, quickly blowing away and peeling off the larger dust particles attached to the bag fibers, so that the dust is separated from the bag. At the same time, the bag shaking mechanism drives the cam to rotate through the motor, driving the reciprocating motion of the rocker and the swing table, so that the dust bag swings at a high frequency. This swing can not only further loosen the fine dust particles that are not easily blown off by the airflow, but also generate slight vibrations inside the bag, which is helpful for the separation of dust particles. During the swinging process of the bag, it will also continuously hit the flapping frame set around it, and the collision of the bag will generate additional vibrations, which will help the dust particles in deeper layers to fall off.

[0016] 2. The present invention uses a telescopic nozzle structure. Under the action of the pulse airflow, the nozzle part of the telescopic nozzle will move downward and closely contact the dust bag, which can minimize gas leakage, ensure that most of the airflow directly acts on the bag surface, and enhance the back-blowing effect. When the pulse airflow stops, the nozzle will automatically rebound under the action of the tension spring and return to its initial position. This design not only ensures the effectiveness of cleaning, but also avoids unnecessary pressure or obstruction on the bag in the non-cleaning state.

[0017] 3. The airflow and dust are separated by the slag discharge mechanism. The rotating slag discharge wheel in the slag discharge mechanism can not only transport the dust out from the ash discharge port, but also the partition on the side wall can block the airflow to prevent the airflow from bringing dust back into the air during the slag discharge process. The rotating slag discharge wheel in the slag discharge mechanism can not only transport the dust out from the ash discharge port, but also the partition on the side wall can block the airflow to prevent the airflow from bringing dust back into the air during the slag discharge process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cooperation state of the pulse cleaning mechanism and the bag shaking mechanism of the present invention; Figure 3 It is a schematic diagram of the structure of the dust removal cylinder of the present invention; Figure 4 It is a schematic diagram of the structure of the pulse cleaning mechanism of the present invention; Figure 5 is a side sectional view of the present invention; Figure 6 For the present invention Figure 6 Enlarged view of point A in the middle; Figure 7 For the present invention Figure 6 Enlarged view of point B in the middle; Figure 8 It is a schematic diagram of the matching state of the support ring and the connecting rope of the present invention; Fig. 9 It is a schematic diagram of the transmission structure of the bag shaking mechanism of the swing platform of the present invention in a perspective state; Fig.10 For the present invention Fig. 9 Enlarged view of point D in the middle; Fig.11 For the present invention Figure 6 Enlarged view of point C in the middle; Fig.12 It is a schematic diagram of the cross-sectional structure of the slag discharge mechanism of the present invention.

[0019] In the figure: 1. dust collector body; 101. dust collecting cylinder; 1011. air inlet; 1012. air outlet; 1013. recoil outlet; 1014. ash outlet; 1015. opening and closing solenoid valve; 102. dust collecting bag; 1021. piston ring; 1022. compression spring; 104. partition; 1041. piston chamber; 105. support ring; 1051. connecting rope; 106. limit ring; 107. beating frame; 2. pulse cleaning mechanism; 201. transfer box; 202. pulse solenoid valve; 203. bronchial tube; 204. telescopic nozzle; 2041. nozzle seat; 2042. nozzle; 2043. telescopic bellows; 20 44. Tension spring; 3. Bag shaking mechanism; 301. First motor; 302. Cam; 3021. Eccentric shaft; 303. Rocker; 3031. Rotating shaft; 3032. Reinforcing rod; 3033. Slide hole; 3034. First ball; 304. Support frame; 3041. Shaft hole; 3402. Slide groove; 305. Swing table; 3051. Positioning groove; 3052. Slide rod; 3053. Guide groove; 306. Guide frame; 3061. Second ball; 4. Slag discharge mechanism; 401. Slag discharge box; 4011. Feed port; 4012. Discharge port; 402. Second motor; 403. Rotating slag discharge wheel; 4031. Blade. DETAILED DESCRIPTION

[0020] See also Figure 1-Figure 12 , a bag cleaning device for a bag dust collector, comprising a dust collector body 1, wherein a pulse cleaning mechanism 2, a bag shaking mechanism 3 and a slag discharge mechanism 4 are arranged in the dust collector body 1; The dust collector body 1 includes a dust collecting cylinder 101, a dust collecting bag 102, and an opening and closing solenoid valve 1015. An air inlet 1011 is arranged on the side of the dust collecting cylinder 101, an air outlet 1012 and a recoil port 1013 are arranged on the top of the dust collecting cylinder 101, and an ash discharge port 1014 is arranged at the bottom of the dust collecting cylinder 101; The pulse cleaning mechanism 2 includes a transfer box 201, a pulse solenoid valve 202, a bronchial tube 203 and a telescopic nozzle 204, and the pulse cleaning mechanism 2 is installed in the backwash port 1013; The bag shaking mechanism 3 includes a first motor 301, a cam 302, a rocker 303, a support frame 304 and a swing platform 305. The bag shaking mechanism 3 is installed at the lower end of the dust removal bag 102; The slag discharge mechanism 4 includes a slag discharge box 401 , a second motor 402 and a rotating slag discharge wheel 403 . The slag discharge mechanism 4 is installed at the bottom of the ash discharge port 1014 .

[0021] Furthermore, a partition 104 is provided in the dust removal cylinder 101, and a piston cavity 1041 is provided on the upper end surface of the partition 104. A piston ring 1021 cooperating with the piston cavity 1041 is fixedly installed on the top of the dust removal bag 102. A compression spring 1022 is provided in the piston cavity 1041. The dust removal bag 102 and the partition 104 are elastically connected through the compression spring 1022. A limiting ring 106 is provided on the top of the piston cavity 1041. A positioning groove 3051 is provided on the upper end surface of the swing table 305. The bottom of the dust removal bag 102 is inserted into the positioning groove 3051 and fixed to the swing table 305.

[0022] When the swing platform 305 swings, it will drive the dust bag 102 to swing, thereby shaking off the dust on the surface of the dust bag 102. During the shaking process, the dust bag 102 will be pulled and cushioned by the elastically connected piston ring 1021 to prevent the dust bag 102 from being torn off. The repeated contraction of the spring can increase the shaking frequency of the dust bag 102 and enhance the cleaning effect of the dust bag 102.

[0023] Furthermore, support rings 105 are evenly arranged in the dust removal bag 102 , and connecting ropes 1051 for fixing the support rings 105 are arranged between the support rings 105 . The support rings 105 are made of stainless steel, and the connecting ropes 1051 are made of nylon.

[0024] The dust bag 102 is propped up by the support ring 105 to prevent the dust bag 102 from shrinking inwards under the action of air pressure during use and affecting the dust removal effect. The support ring 105 is connected by the connecting rope 1051 so that the support ring 105 maintains a certain distance to evenly support the dust bag 102 and allows the dust bag 102 to be distorted without affecting the shaking dust removal.

[0025] Furthermore, the support frame 304 is fixedly installed in the dust removal cylinder 101, and a rotating shaft 3031 is provided on the upper end surface of the support frame 304. An axial hole 3041 cooperating with the rotating shaft 3031 is provided on the rocker 303. The cam 302 is installed on the output shaft of the first motor 301. An eccentric shaft 3021 is provided on the edge of the upper end surface of the cam 302. A sliding groove 3402 slidably cooperating with the eccentric shaft 3021 is provided on the rocker 303. A sliding hole 3033 is provided at the end of the rocker 303 away from the sliding groove 3402, and a sliding rod 3052 cooperating with the sliding hole 3033 is provided at the bottom of the swing platform 305.

[0026] The cam 302 is driven to rotate by the motor, so that the eccentric shaft 3021 rotates around the center of the cam 302, and under the lever principle of the rocker 303, the slide rod 3052 is driven to swing left and right, so that the swing platform 305 drives the dust bag 102 to shake left and right, accelerating the dust falling off the surface of the dust bag 102.

[0027] Furthermore, the bottom of the swing platform 305 is a spherical top structure, the inner end surface of the dust removal cylinder 101 is provided with a guide frame 306, the bottom of the rocker 303 is provided with a reinforcing rod 3032 that slides with the slide rod 3052, and the contact surface between the guide frame 306 and the swing platform 305 is a slope structure.

[0028] When the bag shaking mechanism 3 drives the dust bag 102 to swing left and right, the swing platform 305 slides upward along the guide frame 306, and when it returns to the center, it slides downward under the action of gravity, thereby driving the dust bag 102 to complete the longitudinal reciprocating motion, pulling the dust cloth, making the dust bag 102 intermittently tensioned, and improving the shaking dust removal effect. The stability of the swing platform 305 is improved by the reinforcing rod 3032 to prevent the swing platform 305 from tilting.

[0029] Furthermore, a guide groove 3053 is provided on the side of the sliding rod 3052 , a first ball 3034 cooperating with the guide groove 3053 is provided in the sliding hole 3033 , and a second ball 3061 in sliding contact with the swing platform 305 is provided on the guide frame 306 .

[0030] Through the cooperation of the first ball 3034 and the guide groove 3053, the friction force when the slide rod 3052 slides up and down is reduced, and the rotation of the slide rod 3052 can be limited to prevent the swing platform 305 from rotating and causing the dust bag 102 to become tangled. The friction force between the swing platform 305 and the guide frame 306 is reduced by the second ball 3061, thereby improving the sliding stability of the swing platform 305.

[0031] Furthermore, a flapping frame 107 is provided on the inner wall of the dust removal cylinder 101. The flapping frame 107 is a hollow cylindrical structure, and the diameter of the flapping frame 107 gradually decreases from the upper and lower ends to the center.

[0032] When the bag shaking mechanism 3 drives the dust bag 102 to swing left and right, the dust bag 102 hits the beating frame 107, so that the dust on the surface of the dust bag 102 falls off under the action of inertia, thereby further improving the dust removal effect of the dust bag 102.

[0033] Furthermore, the pulse solenoid valve 202 is installed at the air inlet end of the transfer box 201, the bronchial pipe 203 is connected with the transfer box 201, the telescopic nozzle 204 is installed at the lower end of the bronchial pipe 203, and the telescopic nozzle 204 is located directly above the dust removal bag 102, the telescopic nozzle 204 includes a nozzle seat 2041, a nozzle 2042, a telescopic bellows 2043 and a tension spring 2044, the telescopic bellows 2043 is fixedly installed between the nozzle seat 2041 and the nozzle 2042, and the nozzle seat 2041 and the nozzle 2042 are elastically connected by the tension spring 2044.

[0034] When the pulse airflow enters the telescopic nozzle 204, since the nozzle 2042 is small, the nozzle 2042 slides downward under the action of air pressure and fits against the top of the dust bag 102, thereby reducing gas leakage between the dust bag 102 and the nozzle 2042, increasing the air pressure in the dust bag 102, and increasing the recoil effect of the airflow on the dust bag 102. When the airflow stops, the nozzle 2042 rebounds under the resetting action of the tension spring 2044, thereby preventing the nozzle 2042 from affecting the normal operation of the dust bag 102.

[0035] Furthermore, a feed port 4011 connected to the ash discharge port 1014 is provided at the top of the slag discharge box 401, a discharge port 4012 is provided at the bottom of the slag discharge box 401, a rotating slag discharge wheel 403 is installed on the output shaft of the second motor 402, and a side wall of the rotating slag discharge wheel 403 is provided with a blade 4031 that fits with the inner end surface of the slag discharge box 401.

[0036] The motor drives the rotary slag discharge wheel 403 to rotate, thereby transporting the dust from the feed port 4011 to the discharge port 4012, and blocking the airflow to prevent the dust from flying under the action of the airflow, thereby improving the environmental protection performance of the equipment.

[0037] See also Figure 1-Figure 12 , a bag cleaning method for a bag dust collector comprises the following steps: Step 1, pulse recoil. When it is necessary to clean the dust accumulated on the dust bag 102, the pulse solenoid valve 202 is opened, the on-off solenoid valve 1015 is closed, and the compressed air enters the transfer box 201 from the pulse solenoid valve 202, and then reaches the telescopic nozzle 204 through the bronchial tube 203. At this time, since the nozzle 2042 is designed to be slidable, when the high-pressure gas passes through, the nozzle 2042 will move downward under the action of the air pressure and closely contact the top of the dust bag 102, reducing gas leakage, thereby ensuring that sufficient air pressure impacts the inside of the bag, so that the dust accumulated on the bag falls off under the impact of the airflow. When the pulse ends, the nozzle 2042 is reset under the action of the tension spring 2044 to prepare for the next pulse; Step 2, shaking dust removal, after the pulse recoil, the first motor 301 is started, driving the cam 302 to rotate, the eccentric shaft 3021 of the cam 302 cooperates with the slide groove 3402 of the rocker 303, so that the rocker 303 pushes the slide rod 3052 under the action of the lever principle, thereby driving the swing platform 305 and the dust bag 102 installed thereon to swing left and right. Since the dust bag 102 is elastically connected to the partition plate 104 in the dust removal cylinder 101 through the piston ring 1021, the compression spring 1022 of the piston ring 1021 plays a buffering role during the swinging process to prevent the bag from being damaged by excessive pulling. In addition, the contraction of the spring can also increase the shaking frequency of the bag and enhance the cleaning effect; Step 3, sedimentation and slag discharge. After the pulse recoil and shaking dust removal, the equipment enters a static stage to allow the dust loosened by recoil and shaking to naturally settle to the bottom of the dust removal cylinder 101. At this time, the second motor 402 is started to drive the rotating slag discharge wheel 403 to rotate. The blades 4031 on the rotating slag discharge wheel 403 push the dust deposited in the slag discharge box 401 to the slag discharge port. At the same time, since the blades 4031 of the slag discharge wheel fit against the inner wall of the slag discharge box 401, the dust can be effectively prevented from being raised again, thereby ensuring the cleanliness and environmental protection performance of the equipment.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bag cleaning device for a bag dust collector, comprising a dust collector body (1), characterized in that: The dust collector body (1) is provided with a pulse cleaning mechanism (2), a bag shaking mechanism (3) and a slag discharge mechanism (4); The dust collector body (1) comprises a dust removal cylinder (101), a dust removal bag (102), and an opening and closing solenoid valve (1015); an air inlet (1011) is arranged on the side of the dust removal cylinder (101); an air outlet (1012) and a recoil outlet (1013) are arranged on the top of the dust removal cylinder (101); and an ash outlet (1014) is arranged on the bottom of the dust removal cylinder (101); The pulse cleaning mechanism (2) comprises a transfer box (201), a pulse electromagnetic valve (202), a bronchial tube (203) and a telescopic nozzle (204); the pulse cleaning mechanism (2) is installed in the recoil port (1013); The bag shaking mechanism (3) comprises a first motor (301), a cam (302), a rocker (303), a support frame (304) and a rocking platform (305); the bag shaking mechanism (3) is installed at the lower end of the dust removal bag (102); The slag discharge mechanism (4) comprises a slag discharge box (401), a second motor (402) and a rotating slag discharge wheel (403); the slag discharge mechanism (4) is installed at the bottom of the ash discharge port (1014).

2. A bag cleaning device for a bag dust collector according to claim 1, characterized in that: A partition (104) is arranged in the dust removal cylinder (101); a piston cavity (1041) is arranged on the upper end surface of the partition (104); a piston ring (1021) matching with the piston cavity (1041) is fixedly mounted on the top of the dust removal bag (102); a compression spring (1022) is arranged in the piston cavity (1041); the dust removal bag (102) and the partition (104) are elastically connected via the compression spring (1022); a limit ring (106) is arranged on the top of the piston cavity (1041); a positioning groove (3051) is arranged on the upper end surface of the swing platform (305); and the bottom of the dust removal bag (102) is inserted into the positioning groove (3051) and fixed to the swing platform (305).

3. The bag cleaning device of a bag dust collector according to claim 1, characterized in that: Support rings (105) are evenly arranged inside the dust removal bag (102), and connecting ropes (1051) for fixing the support rings (105) are arranged between the support rings (105); the support rings (105) are made of stainless steel, and the connecting ropes (1051) are made of nylon.

4. The bag cleaning device of a bag dust collector according to claim 1, characterized in that: The support frame (304) is fixedly installed in the dust removal cylinder (101); a rotating shaft (3031) is arranged on the upper end surface of the support frame (304); a shaft hole (3041) cooperating with the rotating shaft (3031) is arranged on the rocking arm (303); the cam (302) is installed on the output shaft of the first motor (301); an eccentric shaft (3021) is arranged on the edge of the upper end surface of the cam (302); a sliding groove (3402) slidably cooperating with the eccentric shaft (3021) is arranged on the rocking arm (303); a sliding hole (3033) is arranged on the end of the rocking arm (303) away from the sliding groove (3402); and a sliding rod (3052) cooperating with the sliding hole (3033) is arranged at the bottom of the rocking platform (305).

5. A bag cleaning device for a bag dust collector according to claim 4, characterized in that: The bottom of the swing platform (305) is a spherical top structure, the inner end surface of the dust removal cylinder (101) is provided with a guide frame (306), and the bottom of the rocker (303) is provided with a reinforcing rod (3032) that slidably cooperates with the sliding rod (3052).

6. The bag cleaning device of a bag dust collector according to claim 1, characterized in that: The inner wall of the dust removal cylinder (101) is provided with a beating frame (107), the beating frame (107) is a hollow cylindrical structure, and the diameter of the beating frame (107) gradually decreases from the upper and lower ends to the center.

7. The bag cleaning device of a bag dust collector according to claim 1, characterized in that: The pulse solenoid valve (202) is installed at the air inlet end of the transfer box (201); the bronchial pipe (203) is connected to the transfer box (201); the telescopic nozzle (204) is installed at the lower end of the bronchial pipe (203), and the telescopic nozzle (204) is located directly above the dust removal bag (102); the telescopic nozzle (204) comprises a nozzle seat (2041), a nozzle (2042), a telescopic bellows (2043) and a tension spring (2044); the telescopic bellows (2043) is fixedly installed between the nozzle seat (2041) and the nozzle (2042); and the nozzle seat (2041) and the nozzle (2042) are elastically connected via a tension spring (2044).

8. The bag cleaning device of a bag dust collector according to claim 1, characterized in that: The top of the slag discharge box (401) is provided with a feed port (4011) connected to an ash discharge port (1014); the bottom of the slag discharge box (401) is provided with a discharge port (4012); the rotating slag discharge wheel (403) is mounted on the output shaft of the second motor (402); and the side wall of the rotating slag discharge wheel (403) is provided with blades (4031) that fit with the inner end surface of the slag discharge box (401).

9. A bag cleaning method for a bag dust collector, applicable to a bag cleaning device for a bag dust collector as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Pulse recoil, generating a pulse airflow through a pulse cleaning mechanism (2) to recoil the dust removal bag (102); Step 2: shaking to remove dust, driving the dust removal bag (102) to swing through the bag shaking mechanism (3), causing the dust removal bag (102) to shake at a high frequency, thereby shaking off dust on the surface of the dust removal bag (102); Step 3, sedimentation and slag discharge. After the equipment recoil and shake are completed, the equipment is left to stand for a period of time to allow the dust in the equipment to settle to the ash discharge port (1014). The slag discharge structure is started to discharge the dust in the dust collector from the slag discharge port.

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