Bag pulse dust collector

Abstract

The invention relates to the technical field of dust removers, in particular to a cloth bag pulse dust remover which comprises a dust removal box and a dust hopper, the lower end of the dust removal box is open and connected with the dust hopper through a flange, the dust removal box is further provided with an air inlet, an air outlet and a steam pocket, and a mounting plate and a pulse valve are mounted in the dust removal box. The pneumatic assembly axially extends by utilizing the power of primary air injection, so that the cloth bag is axially stretched and tensioned, and the stretched and tensioned state is stabilized through the locking piece, so that the situation that part of accumulated dust shaken off in a gap falls onto the cloth bag again due to the fact that adjacent filter cartridges are too close to each other or even fit with each other due to expansion of the cloth bag during pulse dust removal is avoided, and the dust removal efficiency is improved. Meanwhile, the rubber ball moves downwards along with the connecting frame to flap the cloth bag, so that accumulated dust on the cloth bag is cleaned, and the dust cleaning and removing quality of the cloth bag pulse dust collector is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of dust collectors, in particular to a bag pulse dust collector. Background Art

[0002] When the bag pulse dust collector is working, the dust-laden gas first enters the equipment through the air inlet and collides with the middle inclined plate and baffle, so the airflow direction changes and flows into the ash hopper after deceleration. Under the action of inertia, the coarse dust particles settle directly into the ash hopper, thus completing the pre-dust removal. Then the airflow passes through the bag with a metal skeleton inside, and the dust is captured on the outer surface of the bag. The purified gas flows into the upper cleaning chamber of the bag room and is discharged from the air outlet. In order to ensure the filtering efficiency of the bag pulse dust collector for exhaust gas, the filter cartridges are installed at a high density in the dust collection box. The installation density of the filter cartridges of the bag pulse dust collector is too high. At the moment of pulse cleaning, the bag will expand due to the high-pressure airflow. The excessively high installation density makes the adjacent bags too close or even fit together, which causes part of the dust on the bag to re-attach to the adjacent bag, making the cleaning effect of the bag poor.

[0003] In view of the above problems, the prior art provides some solutions. For example, personnel are arranged to enter the bag pulse dust collector regularly to manually replace the bags. In order to ensure the filtering effect, a large number of bags are arranged in the bag pulse dust collector. The bags need to be replaced after long-term use. Replacing these bags increases the workload of personnel and thus increases labor costs. For example, the invention disclosure of patent application No. CN202410152247.9 provides a bag pulse dust collector. By setting an adjustable support mechanism, when a part of the filter bag is seriously clogged, the part of the filter bag can be folded, and at the same time, the contact area between other positions and the dust-containing gas is increased, so that the filter bag can be cleaned. The blockage degree of each part is basically the same, so as to avoid the pulse mechanism being triggered to clean the filter bag only when the filter bag is severely blocked partially, thereby improving the cleaning effect of the filter bag. When the pulse mechanism cleans a certain filter bag, it pushes the folds of the adjacent sides of the adjacent filter bag and the filter bag being cleaned through the connecting structure to reduce the contact area with the dust, so as to reduce the impact on the adjacent filter bags during the cleaning operation, thereby ensuring the cleaning effect of the filter bag. However, in this scheme, the force exerted on the contraction of the filter bag is transmitted from the top of the filter bag, so that the bottom of the filter bag cannot be completely contracted, thereby avoiding the problem that dust accumulates at the bottom of the filter bag and the filtering effect of the filter bag decreases after long-term use. Summary of the invention

[0004] The object of the present invention is to provide a bag pulse dust collector to solve the problem that the bag pulse dust collector has too high installation density of bags. At the moment of pulse cleaning, the bags will expand due to the high-pressure airflow, and the excessively high installation density makes the adjacent bags too close or even fit together, so that part of the dust on the bags still re-attaches to the adjacent bags, resulting in poor cleaning effect of the bags. When the above problems occur on the bags, the filtering effect of the bag pulse dust collector is easily affected, so that the exhaust gas cannot be effectively collected, and at the same time, the shortcomings of the existing technical solutions are solved.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A bag pulse dust collector comprises a dust box and an ash hopper, wherein the lower end of the dust box is open and connected to the ash hopper through a flange, and specifically, the dust box is also provided with an air inlet, an exhaust port and a steam drum, a mounting plate, a pulse valve and a filter cartridge are arranged in the dust box, the pulse valve is connected to the steam drum and arranged above the mounting plate, a pneumatic component and a plurality of filter cartridges in a rectangular array are arranged on the mounting plate, the pulse valve is the same in number as the filter cartridge and the pneumatic component and the positions correspond one to one, a flow rate sensor is arranged on the pulse valve, and the exhaust port is located at the pulse Above the valve, the pneumatic component uses the power of steam drum jet to achieve axial stretching and tensioning of the cloth bag. The filter cartridge includes a cloth bag and a skeleton installed in the cloth bag. The bottom end of the skeleton is connected to a first holder. The air inlet is located at the lower side of the pneumatic component. An air intake fan is also installed in the air inlet. The flow rate sensor is electrically connected to the air intake fan. The pneumatic component is bolted to the first holder. When the air intake fan is started, the gas flow rate in the dust removal box increases, and the flow rate sensor opens the pulse valve, so that the pneumatic component shrinks the cloth bag.

[0007] It is easy to understand that in order to ensure the filtering efficiency of the bag pulse dust collector for exhaust gas, filter cartridges will be installed at a high density in the dust collection box. However, the excessively high installation density makes the adjacent bags too close or even fit together, which causes some of the dust on the bags to re-attach to the adjacent bags. The real-time flow rate of the airflow in the dust collection box is measured by the flow rate sensor, and then the pulse valve is controlled to perform pulse cleaning on the dust collecting filter cartridge. The pneumatic component uses the power generated by the high-pressure air during pulse cleaning to axially stretch and tension the bag, thereby preventing the bag from expanding due to the high-pressure airflow, thereby ensuring that there is enough space for the floating dust between adjacent bags to fall into the ash hopper, thereby ensuring the cleaning effect of the bag, and then improving the quality of exhaust gas filtering by the bag pulse dust collector. With the end of a pulse cleaning, the air intake fan is started, and the flow rate sensor measures the increase in the air flow rate in the dust collection box, thereby starting the pulse valve connected to the pneumatic component to open. The pneumatic component is powered by the high-pressure air and returns to the initial contracted state, thereby causing the bag to end the stretching and tensioning state, thereby ensuring the service life of the bag.

[0008] Preferably, the pneumatic assembly also includes a slide cylinder, a slide rod and a connecting frame, the slide cylinder is installed in the middle of the mounting plate, the slide cylinder is open at the upper and lower ends and has a first air hole formed therein, the first air hole is connected to the steam drum, the slide rod is slidably connected to the inner wall of the slide cylinder, an unlocking piece is also installed on the inner wall of the lower end of the slide cylinder, a locking piece is installed on the upper end of the slide rod, the first air hole is connected to the locking piece and the unlocking piece, and the locking piece and the unlocking piece are used to achieve the stability of the cloth bag in a tensioned or contracted state, the lower end of the slide rod is bolted to the connecting frame, the connecting frame is in a "re" shape, and a second clamping seat is also provided between the first clamping seat and the cloth bag, a telescopic cylinder and a telescopic rod are installed between the second clamping seat and the first clamping seat, the upper and lower ends of the telescopic cylinder are respectively connected to the connecting frame and the telescopic rod, one end of the telescopic rod is slidably connected to the inner wall of the telescopic cylinder, and the other end is fixedly connected to the first clamping seat.

[0009] It is easy to understand that when the filter cartridge is used for a long time and its surface is covered with dust, which affects the filtering quality of the bag pulse dust collector, the flow rate sensor detects that the air flow velocity in the air is reduced, and then the operation of the intake fan is stopped, and the pulse valve is controlled to open to spray out the high-pressure air in the drum. When the bag is subjected to pulse dust removal, its first air hole is also filled with high-pressure air, and then the unlocking piece is opened, so that the sliding rod in the sliding cylinder moves downward due to the weight of the connecting frame. Since the first clamping seat and the second clamping seat are connected by a telescopic cylinder and a telescopic rod that can slide relative to each other, as the connecting frame moves downward, the distance between the first clamping seat and the second clamping seat in the filter cartridge gradually moves away until the bag is It is in a limited stretched and tensioned state, thus avoiding the situation that excessive installation density makes adjacent bags too close or even fit together during pulse cleaning, resulting in a part of the dust on the bags still re-attaching to the adjacent bags, making the cleaning effect of the bags poor; at the same time, by setting the connecting frame into a "U" shape, while ensuring that all bags are stretched and tensioned at the same time, in daily use, the efficiency of the bag pulse dust collector in filtering exhaust gas is reduced due to the obstruction of the connecting frame; at the same time, through the control of the pulse valve, the filter cartridge can be synchronously tensioned during pulse cleaning, thereby avoiding the problem of additional driving force that increases the complexity of the dust collector and the increase in the failure rate.

[0010] Preferably, the locking member includes an installation groove, a locking pin and a locking groove, the installation groove is opened at the upper end of the sliding rod, a locking spring is arranged in the installation groove, the locking pin passes through the locking spring and is slidably installed in the installation groove, the locking groove abuts against the locking pin, and the locking groove is connected to the first air hole.

[0011] It is easy to understand that in order to avoid the contraction of the length of the pneumatic component due to the instantaneous expansion of the bag, which in turn affects the tensioning state of the bag, causing adjacent bags to be too close or even fit together, and thus failing to achieve the effect of improving the cleaning quality, a locking piece is provided on the slide bar. As the pneumatic component is stretched by the high-pressure air ejected from the pulse valve, the upper end of the slide bar abuts against the lower end of the slide cylinder, and the locking pin moves toward the outer cylindrical surface away from the slide bar due to the elastic force of the locking spring until one end of the locking pin enters the locking groove, thereby fixing the position of the slide bar, so that the slide bar will not float upward due to the expansion of the bag, thereby ensuring the stretching and tensioning of the bag by the pneumatic component, and thus ensuring the cleanliness of the bag after cleaning.

[0012] Preferably, the unlocking member includes a reset pin, a reset groove and a retaining ring, the reset groove is opened on the inner wall of the lower side of the slide cylinder, the reset pin is installed in the reset groove, the two ends of the reset spring are respectively connected to the reset pin and the reset groove, the reset groove is connected to the first air hole, the retaining ring is arranged at the upper end of the reset groove, and the inner ring diameter is smaller than the inner ring diameter of the slide cylinder.

[0013] It is easy to understand that in order to prevent the cloth bag from losing its elasticity due to long-term stretching and tensioning, an unlocking piece is provided. As the first air hole sprays gas into the reset groove and the locking groove, the reset spring and the locking spring are compressed, and the reset pin and the locking pin therein shrink into the reset groove and the locking groove, and more gas is filled into the gap between the slide rod and the slide cylinder, so that the slide rod rises along the inner wall of the slide cylinder until the slide rod abuts against the clamping ring. As the high-pressure gas stops, the reset pin extends from the reset groove, thereby realizing the contraction and reset of the pneumatic component, thereby ensuring the service life of the cloth bag.

[0014] Preferably, the telescopic cylinder and the telescopic rod are also provided with an active rod, an upper arm, a lower arm and a knocking spring, the active rod is hinged to the telescopic cylinder, the upper arm is hinged to the telescopic rod, a lower arm is riveted to one end of the upper arm away from the telescopic rod, a convex eaves is provided at the connection between the lower arm and the upper arm, the active rod is riveted to the lower arm at one end away from the telescopic cylinder, two ends of the knocking spring are respectively connected to the lower arm and the farthest end of the upper arm, and a rubber ball is provided at one end of the lower arm away from the upper arm.

[0015] It is easy to understand that in order to avoid the bag pulse dust collector from having a drop in pressure when the high-pressure gas ejected reaches the bottom of the bag due to the excessive length of the filter cartridge and the arrangement of the first and second cartridges during pulse cleaning, the drop in pressure will reduce the cleaning effect of the bag. In order to ensure the cleaning effect of the bag at the bottom, a large arm is hinged on the telescopic rod, a small arm is riveted on one end of the large arm away from the telescopic rod, and two ends of the knocking spring are respectively connected to the small arm and the farthest end of the large arm, and are connected to the small arm through an active rod hinged on the telescopic cylinder to form a connecting rod mechanism. As the sliding rod moves downward along the inner wall of the sliding cylinder, the movable frame drives the first and second cartridges to move downward. The second holder moves downward, and the telescopic cylinder moves away from the first holder, so that the active rod moves in the same direction. Because a connecting rod mechanism is formed among the active rod, the upper arm and the lower arm, as the active rod moves downward, the angles of the upper arm and the lower arm tend to be 180°, and the rotation angle of the upper arm and the lower arm is limited to no more than 180° by setting a convex eave. The rubber ball installed on the lower arm is approached to the cloth bag by the thrust of the striking spring and the thrust of the connecting rod mechanism. Because the stretching of the pneumatic component is instantaneous, the rubber ball hits the cloth bag in an instant, and cooperates with the high-pressure gas to perform pulse cleaning on the cloth bag, thereby ensuring the cleaning effect of the bottom of the cloth bag.

[0016] Preferably, a transition step is provided at the upper end of the slide rod, the number of steps of the transition step is 2, and the transformation surface of the transition step is inclined to the locking groove, and the inner wall of the slide cylinder is provided with a transition slope matching the shape of the transition step.

[0017] Preferably, the locking pin is provided with a guiding surface matched with the transition slope, a panel is provided between the locking pin and the transition step, and the locking pin protrudes from the panel.

[0018] It is easy to understand that in order to prevent the slide rod from being subjected to excessive instantaneous force when sliding down along the inner wall of the slide cylinder due to the jet of the pulse valve, resulting in the locking pin of the locking member gradually bending and deforming after long-term use, the pneumatic component cannot resist the force caused by the jet, making it impossible for the bag to remain tensioned. By setting the number of steps of the transition step to 2, the instantaneous pressure of the slide cylinder on a single surface is shared. Furthermore, the arrangement of the transition slope cooperates with the guide surface, so that the locking pin is guided by the transition slope during the downward sliding process. The locking pin is contracted, thereby avoiding the continuous friction caused by the complete contact between the locking pin and the inner wall of the slide cylinder, which causes the wear of the locking pin. At the same time, during the falling process of the slide rod, the weight of the filter cartridge and the movable frame is borne by the locking pin. The locking pin is easily bent due to the large force. By arranging the panel, the force-bearing surface of the end of the locking pin extending out of the installation groove is increased due to the force from the inner wall of the slide cylinder, while the area where the panel does not cover the locking pin is reduced, so that the locking pin can withstand a large force and avoid air, thereby ensuring the service life of the locking part.

[0019] Preferably, both the first card seat and the second card seat are provided with filter holes, and the filter holes are arranged in a honeycomb shape.

[0020] It is easy to understand that in order to avoid the further drop in air pressure of the gas ejected from the pulse valve when it reaches the bottom of the filter cartridge due to the setting of the first and second sockets, the filter holes are set to be hexagonal and arranged in a honeycomb shape. The first and second sockets can reduce the burden on the pneumatic components while helping to evenly distribute the stress and enhance the bending resistance. The honeycomb structure can also increase the surface area for gas passage, thereby further reducing the loss of air pressure. In combination with the rubber ball, the cleaning effect of the bottom bag is guaranteed, thereby ensuring the cleaning and dust removal quality of the bag pulse dust collector.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention provides a pneumatic component, a locking part and an unlocking part, and utilizes the power of the jet to realize the axial stretching and tensioning of the bag by the pneumatic component, and stabilizes the stretched and tensioned state by the locking part, thereby avoiding the situation in which the adjacent filter cartridges are too close or even fit together due to the expansion of the bag during pulse cleaning, causing part of the accumulated dust shaken off in the gap to fall back onto the bag. After one jet cleaning is completed, the air intake fan is started, the flow rate sensor receives the signal, the unlocking spring on the unlocking part is compressed, and the sliding rod rises to release the tensioned state of the bag, thereby ensuring the service life of the bag, and further ensuring the cleaning and dust removal quality of the bag pulse dust collector.

[0023] 2. The present invention arranges a rubber ball, and the active rod moves downward with the connecting frame, so that the connecting rod mechanism composed of the active rod and its upper arm and lower arm opens, and the rubber ball beats the cloth bag, thereby cleaning the dust accumulated on the cloth bag, thereby avoiding the problem that the air pressure reaching the bottom of the bag is too low during pulse cleaning due to the length of the filter cartridge, and the inability to effectively clean the dust bag, thereby ensuring the cleaning quality of the cloth bag pulse dust collector.

[0024] 3. The present invention provides a transition step so that when the pneumatic component is impacted by gas, the transition step can prevent the locking member from being subjected to instantaneous impact force, and the wear of the locking pin is reduced by the cooperation of the transition slope and the guide surface, thereby ensuring stable locking after long-term use.

[0025] 4. The present invention provides a panel. When the locking pin moves from the transition slope to the locking groove, the weight of the filter cartridge and the movable frame is borne by the locking pin. The locking pin is easily bent due to a large force. By arranging the panel, the locking pin can avoid air, thereby ensuring the service life of the starting assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the bag filter of the present invention;

[0027] Figure 2 for Figure 1 Full cross-section at AA in the middle;

[0028] Figure 3 This is a schematic diagram of the state where the connecting frame is installed at the filter cartridge position;

[0029] Figure 4 for Figure 3 Full cross-section at the middle BB;

[0030] Figure 5 for Figure 4 An enlarged view of the structure of the locking and unlocking parts at C in the middle;

[0031] Figure 6 Schematic diagram of the state in which the slide bar returns to the initial position after the return spring and the locking spring are compressed by blowing air into the first air hole;

[0032] Figure 7 It is a full cross-sectional view of the overall structure of the filter cartridge;

[0033] Figure 8 for Figure 7 A magnified image of the rubber ball hitting the cloth bag at D in the middle.

[0034] In the figure: 1. dust box; 101. dust hopper; 102. air inlet; 103. air inlet fan; 104. exhaust port; 105. steam drum; 1051. pulse valve; 1052. flow rate sensor; 106. mounting plate; 2. pneumatic assembly; 201. slide cylinder; 202. first air hole; 204. slide rod; 205. connecting frame; 206. telescopic cylinder; 207. telescopic rod; 3. filter cartridge; 301. cloth bag; 302. frame; 303. first holder; 304. second holder ; 305, filter hole; 4, locking piece; 401, transition step; 4011, transition slope; 402, mounting groove; 403, locking spring; 404, locking pin; 4041, guide surface; 405, locking groove; 406, panel; 5, unlocking piece; 501, reset pin; 502, reset groove; 503, reset spring; 504, retaining ring; 601, active rod; 602, upper arm; 603, convex eaves; 604, lower arm; 605, rubber ball; 606, knock spring. DETAILED DESCRIPTION

[0035] The present invention provides a bag pulse dust collector, and the technical solution is as follows:

[0036] See also Figure 1 , Figure 2 , Figure 4 and Figure 8A bag pulse dust collector comprises a dust box 1 and an ash hopper 101. The lower end of the dust box 1 is open and connected to the ash hopper 101 through a flange. An air inlet 102, an exhaust port 104 and a steam drum 105 are arranged on the dust box 1. A mounting plate 106, a pulse valve 1051 and a filter cartridge 3 are arranged in the dust box 1. The pulse valve 1051 is arranged above the mounting plate 106 and communicates with the steam drum 105. A pneumatic component 2 and a plurality of filter cartridges 3 in a rectangular array are arranged on the mounting plate 106. The number of pulse valves 1051, the number of filter cartridges 3 and the pneumatic component 2 are the same and the positions correspond one to one. A flow rate sensor 1052 is arranged on the pulse valve 1051. The exhaust port 104 is located at the pulse valve 1051. Above the valve 1051, the pneumatic component 2 uses the power of the steam drum 105 jet to achieve axial stretching and tensioning of the cloth bag 301. The filter cartridge 3 includes a cloth bag 301 and a skeleton 302 installed in the cloth bag 301. The first holder 303 is connected to the bottom end of the skeleton 302. The air inlet 102 is located on the lower side of the pneumatic component 2. The air intake fan 103 is installed in the air intake 102. The flow rate sensor 1052 is electrically connected to the air intake fan 103. The first holder 303 is bolted to the pneumatic component 2. When the air intake fan 103 is started, the gas flow rate in the dust removal box 1 increases, and the flow rate sensor 1052 opens the pulse valve 1051, so that the pneumatic component 2 shrinks the cloth bag 301.

[0037] See also Figure 3 , Figure 4 , Figure 5 and Figure 8 The pneumatic assembly 2 includes a slide 201, a slide rod 204 and a connecting frame 205. The slide 201 is installed in the middle of the mounting plate 106. The upper and lower ends of the slide 201 are open and the first air hole 202 is opened in the slide 201. The steam drum 105 is connected to the first air hole 202. The slide rod 204 is slidably connected to the inner wall of the slide 201. The unlocking member 5 is arranged on the inner wall of the lower end of the slide 201. The upper end of the slide rod 204 is installed with a locking member 4. The first air hole 202 is connected to the locking member 4 and the unlocking member 5. The locking member 4 and the unlocking member 5 are used In order to achieve the stability of the cloth bag 301 in a tensioned or contracted state, the lower end of the slide rod 204 is bolted to a connecting frame 205, and the connecting frame 205 is in a "U" shape. A second holder 304 is also provided between the first holder 303 and the cloth bag 301, and a telescopic cylinder 206 and a telescopic rod 207 are installed between the second holder 304 and the first holder 303. The upper and lower ends of the telescopic cylinder 206 are respectively connected to the connecting frame 205 and the telescopic rod 207. One end of the telescopic rod 207 is fixed to the first holder 303, and the other end is slidably connected to the inner wall of the telescopic cylinder 206.

[0038] See also Figures 4 to 6The locking member 4 includes a mounting groove 402, a locking pin 404 and a locking groove 405. The upper end of the slide bar 204 is provided with a mounting groove 402, and the locking spring 403 is arranged in the mounting groove 402. The locking pin 404 is slidably installed in the mounting groove 402 and penetrates the locking spring 403. The locking groove 405 abuts against the locking pin 404. The first air hole 202 is connected to the locking groove 405. The upper end of the slide bar 204 is provided with a transition step 401. The transition step 401 has two steps, and the transformation surface of the transition step 401 is inclined to the locking groove 405. The inner wall of the slide 201 is provided with a transition slope 4011 that matches the shape of the transition step 401. The locking pin 404 is provided with a guide surface 4041 that matches the transition slope 4011. The panel 406 is arranged between the locking pin 404 and the transition step 401, and the locking pin 404 protrudes from the panel 406 by 2 cm.

[0039] See also Figures 4 to 6 The unlocking member 5 includes a reset pin 501, a reset groove 502 and a clamping ring 504. The clamping ring 504 is arranged at the upper end of the reset groove 502, and the inner ring diameter of the clamping ring 504 is smaller than the inner ring diameter of the slide 201. The reset groove 502 is opened on the inner wall of the lower side of the slide 201, and the reset pin 501 is installed in the reset groove 502. The two ends of the reset spring 503 are respectively connected to the reset pin 501 and the reset groove 502, and the reset groove 502 is connected to the first air hole 202.

[0040] See also Figures 7 and 8 The telescopic cylinder 206 and the telescopic rod 207 are also provided with an active rod 601, an upper arm 602, a small arm 604 and a knocking spring 606. The active rod 601 is hinged to the telescopic cylinder 206, the upper arm 602 is hinged to the telescopic rod 207, the small arm 604 is riveted to one end of the upper arm 602 away from the telescopic rod 207, and a convex eave 603 is provided at the connection between the small arm 604 and the upper arm 602. The active rod 601 is riveted to the small arm 604 at one end away from the telescopic cylinder 206, and two ends of the knocking spring 606 are respectively connected to the farthest ends of the small arm 604 and the upper arm 602, and a rubber ball 605 is provided at one end of the small arm 604 away from the upper arm 602. Filter holes 305 are provided on both the first holder 303 and the second holder 304.

[0041] Reference Figures 1 to 8In order to ensure the filtering efficiency of the bag pulse dust collector for exhaust gas, the filter cartridge 3 is installed at a high density in the dust box 1. However, the excessively high installation density makes the adjacent bags 301 too close or even fit together, which causes a part of the dust on the bags 301 to re-attach to the adjacent bags 301. The real-time flow rate of the airflow in the dust box 1 is measured by the flow rate sensor 1052, and then the pulse valve 1051 is controlled to perform pulse cleaning on the dust collecting filter cartridge 3. The slide cylinder 201 and the slide rod 204 use the power generated by the high-pressure air during pulse cleaning to achieve overall length stretching, and axially stretch and tension the bag 301, thereby preventing the bag 301 from expanding due to the high-pressure airflow, thereby It ensures that there is enough space for the floating dust between adjacent bags 301 to fall into the dust hopper 101, thereby ensuring the cleaning effect of the bags 301, and further improving the quality of the bag pulse dust collector filtering the exhaust gas. After one pulse cleaning is completed, the exhaust port 104 discharges the purified air, the air intake fan 103 in the air inlet 102 is started, and the flow rate sensor 1052 measures the increase in the air flow rate in the dust removal box 1, and then starts to open the pulse valve 1051 connected to the pneumatic component 2. The pneumatic component 2 is powered by the high-pressure air and returns to the initial contracted state, thereby causing the bags 301 to end the stretched and tensioned state, thereby ensuring the service life of the bags 301.

[0042] When the surface of the filter cartridge 3 is covered with dust due to long-term use, which affects the filtering quality of the bag pulse dust collector, the flow rate sensor 1052 detects that the air flow velocity in the air is reduced, thereby stopping the operation of the air intake fan 103 and controlling the pulse valve 1051 to open and spray out the high-pressure air in the steam drum 105. When the bag 301 is pulsed for dust removal, its first air hole 202 is also filled with high-pressure air. As the first air hole 202 sprays gas into the reset groove 502 and the locking groove 405, the reset spring 503 and the locking spring 403 are compressed, and the reset pin 501 and the locking pin 404 therein shrink into the reset groove 502 and the locking groove 405, causing the slide rod 204 in the slide cylinder 201 to move due to the weight of the connecting frame 205. The filter bag 301 is in a state of limited stretching and tensioning, thereby preventing the excessively high installation density of the filter bag 301 from causing the adjacent filter bags 301 to be too close or even fit together during pulse cleaning, thereby causing a portion of the dust on the filter bag 301 to reattach to the adjacent filter bags 301. 01, which makes the cleaning effect of the cloth bag 301 poor. By setting the filter holes 305 to be hexagonal and arranged in a honeycomb shape, the first holder 303 and the second holder 304 can reduce the burden on the pneumatic component 2 while helping to evenly distribute the stress and enhance the bending resistance. The honeycomb structure can also increase the surface area of ​​gas passing through, so that the loss of air pressure is further reduced. By hingedly connecting the upper arm 602 on the telescopic rod 207, the upper arm 602 is riveted with a small arm 604 at one end away from the telescopic rod 207, and the two ends of the knocking spring 606 are respectively connected to the small arm 604 and the farthest end of the upper arm 602, and the active rod 601 hinged on the telescopic cylinder 206 is connected to the small arm 604 to form a connecting rod mechanism. As the sliding rod 204 slides along the The inner wall of the cylinder 201 moves downward, and the movable frame drives the second holder 304 to move downward, and the telescopic cylinder 206 moves away from the first holder 303, so that the active rod 601 moves in the same direction. Because a connecting rod mechanism is formed among the active rod 601, the upper arm 602 and the lower arm 604, as the active rod 601 moves downward, the angles of the upper arm 602 and the lower arm 604 tend to be 180°, and the convex eaves 603 are provided to limit the rotation angle of the upper arm 602 and the lower arm 604 to not exceed 180°. The rubber ball 605 installed on the lower arm 604 is pushed by the striking spring 606 and the pushing force of the connecting rod mechanism to approach the cloth bag 301. Because the stretching of the pneumatic component 2 is instantaneous, the rubber ball 605 hits the cloth bag 301 in an instant.The high-pressure gas is used to pulse clean the bag 301, thereby ensuring the cleaning effect of the bag 301 and the cleaning effect of the bottom bag 301, thereby ensuring the cleaning and dust removal quality of the bag 301 pulse dust collector. At the same time, by setting the connecting frame 205 into a "U" shape, while ensuring that all bags 301 are stretched and tensioned at the same time, in daily use, the gap of the "U" shape is reduced, and the efficiency of the bag pulse dust collector filtering exhaust gas is reduced due to the obstruction of the connecting frame 205.

[0043] In order to avoid the shrinkage of the length of the pneumatic component 2 due to the instantaneous expansion of the cloth bag 301, thereby affecting the tensioning state of the cloth bag 301, causing the adjacent cloth bags 301 to be too close or even fit together, and thus failing to achieve the effect of improving the cleaning quality, a locking member 4 is provided on the slide bar 204. As the pneumatic component 2 is stretched by the high-pressure air ejected by the pulse valve 1051, the upper end of the slide bar 204 abuts against the lower end of the slide cylinder 201, and the locking pin 404 is moved away from the outer circle of the slide bar 204 due to the elastic force of the locking spring 403. The sliding rod 204 is moved along the inner wall of the slide tube 201 to prevent the sliding rod 204 from being subjected to excessive instantaneous force when sliding downward along the inner wall of the slide tube 201 due to the jet of air from the pulse valve 1051, which causes the locking pin 404 to gradually bend and deform after long-term use of the locking member 4, and the pneumatic component 2 cannot resist the force caused by the jet of air, making it impossible for the cloth bag 301 to remain taut. The number of steps is set to 2, so as to share the instantaneous pressure of a single surface of the slide 201. Furthermore, the arrangement of the transition slope 4011 cooperates with the guide surface 4041, so that when the locking pin 404 slides downward, due to the guidance of the transition slope 4011, the locking pin 404 is compressed, thereby avoiding the complete contact between the locking pin 404 and the inner wall of the slide 201 to generate continuous friction and cause wear of the locking pin 404. At the same time, when the slide bar 204 falls, the weight of the filter cartridge 3 and the movable frame is borne by the locking pin 404. The locking pin 404 is prone to bending when subjected to a large force. By arranging the panel 406, the force-bearing surface of the end of the locking pin 404 extending out of the installation slot 402 subjected to the force from the inner wall of the slide cylinder 201 is increased, while the area where the panel 406 does not cover the locking pin 404 is reduced, so that the locking pin 404 can withstand a large force, thereby allowing the locking pin 404 to avoid air, thereby ensuring the service life of the locking member 4, ensuring the stretching and tensioning of the cloth bag 301 by the pneumatic component 2, and thus ensuring the cleanliness of the cloth bag 301 after cleaning.

[0044] In order to prevent the cloth bag 301 from losing its elasticity due to long-term stretching and tensioning, an unlocking member 5 is provided. As the first air hole 202 sprays gas into the reset groove 502 and the locking groove 405, the reset spring 503 and the locking spring 403 are compressed, and the reset pin 501 and the locking pin 404 therein shrink into the reset groove 502 and the locking groove 405, and more gas is filled into the gap between the slide rod 204 and the slide cylinder 201, so that the slide rod 204 rises along the inner wall of the slide cylinder 201 until the slide rod 204 abuts against the clamping ring 504. As the high-pressure gas stops, the reset pin 501 extends out of the reset groove 502, thereby realizing the contraction and reset of the pneumatic component 2, thereby ensuring the service life of the cloth bag 301.

[0045] A specific embodiment of the present invention is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above described embodiment. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments without departing from the principles and ideas of the present invention should still fall within the scope of protection of the present invention.

Claims

1. A bag pulse dust collector, comprising a dust removal box (1) and an ash hopper (101), wherein the lower end of the dust removal box (1) is open and connected to the ash hopper (101) via a flange, characterized in that: The dust removal box (1) is also provided with an air inlet (102), an air outlet (104) and a steam drum (105). A mounting plate (106), a pulse valve (1051) and a filter cartridge (3) are provided inside the dust removal box (1). The pulse valve (1051) is connected to the steam drum (105) and is arranged above the mounting plate (106). A pneumatic component (2) and a plurality of filter cartridges (3) arranged in a rectangular array are provided on the mounting plate (106). The number of the pulse valves (1051), the filter cartridges (3) and the pneumatic component (2) are the same and their positions correspond one to one. A flow rate sensor (1052) is provided on the pulse valve (1051). The air outlet (104) is located above the pulse valve (1051). The pneumatic component (2) uses the dynamic force of the steam drum (105) to inject air into the air. The filter cartridge (3) is configured to realize axial stretching and tensioning of the cloth bag (301) by applying force, the filter cartridge (3) comprising a cloth bag (301) and a frame (302) installed in the cloth bag (301), the bottom end of the frame (302) being connected to a first holder (303), the air inlet (102) being located at the lower side of the pneumatic component (2), an air intake fan (103) being also installed in the air inlet (102), the flow rate sensor (1052) being electrically connected to the air intake fan (103), the pneumatic component (2) being bolted to the first holder (303), the gas flow rate in the dust removal box (1) increasing when the air intake fan (103) is started, the flow rate sensor (1052) opening the pulse valve (1051), causing the pneumatic component (2) to contract the cloth bag (301).

2. A bag pulse dust collector according to claim 1, characterized in that: The pneumatic assembly (2) comprises a slide cylinder (201), a slide rod (204) and a connecting frame (205). The slide cylinder (201) is installed in the middle of the mounting plate (106). The slide cylinder (201) is open at both ends and has a first air hole (202) therein. The first air hole (202) is connected to the steam drum (105). The slide rod (204) is slidably connected to the inner wall of the slide cylinder (201). An unlocking member (5) is also installed on the inner wall of the lower end of the slide cylinder (201). A locking member (4) is installed at the upper end of the slide rod (204). The first air hole (202) is connected to the locking member (4) and the unlocking member (5). The locking member (4) and the unlocking member (5) are The invention is used to achieve the stability of the cloth bag (301) in a tensioned or contracted state. The lower end of the sliding rod (204) is bolted to a connecting frame (205), and the connecting frame (205) is in a "U" shape. A second clamping seat (304) is also provided between the first clamping seat (303) and the cloth bag (301). A telescopic cylinder (206) and a telescopic rod (207) are installed between the second clamping seat (304) and the first clamping seat (303). The upper and lower ends of the telescopic cylinder (206) are respectively connected to the connecting frame (205) and the telescopic rod (207). One end of the telescopic rod (207) is slidably connected to the inner wall of the telescopic cylinder (206), and the other end is fixedly connected to the first clamping seat (303).

3. A bag pulse dust collector according to claim 2, characterized in that: The locking member (4) comprises a mounting groove (402), a locking pin (404) and a locking groove (405); the mounting groove (402) is arranged at the upper end of the slide bar (204); a locking spring (403) is arranged in the mounting groove (402); the locking pin (404) passes through the locking spring (403) and is slidably mounted in the mounting groove (402); the locking groove (405) is arranged on the inner wall at the lower end of the slide cylinder (201) and abuts against the locking pin (404); the locking groove (405) is communicated with the first air hole (202).

4. A bag pulse dust collector according to claim 2, characterized in that: The unlocking member (5) includes a reset pin (501), a reset groove (502) and a retaining ring (504); the reset groove (502) is provided on the lower inner wall of the slide cylinder (201); the reset pin (501) is installed in the reset groove (502); two ends of the reset spring (503) are respectively connected to the reset pin (501) and the reset groove (502); the reset groove (502) is connected to the first air hole (202); the retaining ring (504) is provided at the upper end of the reset groove (502); and the inner ring diameter of the retaining ring (504) is smaller than the inner ring diameter of the slide cylinder (201).

5. The bag pulse dust collector according to claim 2, characterized in that: The telescopic cylinder (206) and the telescopic rod (207) are also provided with an active rod (601), an upper arm (602), a lower arm (604) and a knocking spring (606); the active rod (601) is hinged to the telescopic cylinder (206); the upper arm (602) is hinged to the telescopic rod (207); the lower arm (604) is riveted to one end of the upper arm (602) away from the telescopic rod (207); a convex eave (603) is provided at the connection between the lower arm (604) and the upper arm (602); the active rod (601) is riveted to one end of the telescopic cylinder (206) away from the lower arm (604); two ends of the knocking spring (606) are respectively connected to the lower arm (604) and the farthest end of the upper arm (602); a rubber ball (605) is provided at one end of the lower arm (604) away from the upper arm (602).

6. The bag pulse dust collector according to claim 3, characterized in that: The upper end of the slide bar (204) is provided with a transition step (401), the number of steps of the transition step (401) is 2, and the transformation surface of the transition step (401) is inclined to the locking groove (405), and the inner wall of the slide cylinder (201) is provided with a transition inclined surface (4011) matching the shape of the transition step (401).

7. The bag pulse dust collector according to claim 3, characterized in that: The locking pin (404) is provided with a guide surface (4041) matched with the transition slope (4011), a panel (406) is provided between the locking pin (404) and the transition step (401), and the locking pin (404) protrudes from the panel (406).

8. The bag pulse dust collector according to claim 5, characterized in that: The first card seat (303) and the second card seat (304) are both provided with filtering holes (305), and the filtering holes (305) are arranged in a honeycomb shape.

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