Method for replacing filter bags in electric bag dust removal device

Abstract

The present invention relates to a method for replacing filter bags of an electric bag dust removal device, including using a bag dust removal device capable of fully automatically replacing filter bags, the device comprising: a working part and an auxiliary installation and maintenance part, the working part comprising: a device housing, an inlet for introducing dust-containing gas, an air outlet channel arranged above the device housing and located at a central position throughout the entire length, improved clean rooms arranged on both sides of the air outlet channel, a filter unit arranged at the bottom of each improved clean room; an ash hopper arranged at the bottom of the filter unit and corresponding to each improved clean room; the auxiliary installation and maintenance part comprises a filter bag conveying device for lifting and transmitting the filter bag assembly, an operating platform for operating personnel to move and install corresponding equipment, and a grabbing robot for grabbing the filter bag assembly transmitted by the filter bag conveying device and then directly installing it. The two parts are combined to form an assembly line-like automatic working mode when the filter bag is installed or replaced.

Description

Technical Field

[0001] The invention belongs to the technical field of dust collectors, and in particular relates to a method for replacing filter bags in an electric bag dust removal device. Background Art

[0002] The overall size of the electrostatic precipitator used in thermal power plants and steel mills is very large. With the improvement of environmental protection requirements, the dust emission concentration of the electrostatic precipitator can no longer meet the standard. Therefore, most of the electrostatic precipitators need to be changed to bag filter dust collectors, and the bag filter dust collectors have the following advantages over the electrostatic precipitator: 1. Low operating resistance, the air intake method of the electric bag filter is straight-through; 2. Make full use of the internal space, the electric bag filter adopts a long bag arrangement, and the filter bag length is generally selected to be 6~8 m. Compared with the original dust collector, it can handle a larger air volume in the same dust removal space; 3. It is modified on the basis of the original dust collector, so the equipment footprint is not increased and the construction period is short.

[0003] The current technical solutions for electric bag conversion are as follows: Figure 1 The figure mainly includes: a device shell 01, an inlet 02 for introducing dust-containing gas, an air outlet channel 03 above the device shell 01, and a clean room 04 on both sides of the air outlet channel 03. An ash hopper 05 is arranged at the lower part of the corresponding clean room. A sealable inspection port is provided on the upper surface of each clean room 04, and a filter unit is fixedly arranged at the lower part. The filter unit is composed of a flower plate 210 fixedly set on the bottom surface of the clean room and a plurality of densely distributed vertical filter bag assemblies regularly arranged and sleeved on the flower plate 210. During operation, dust-containing gas is introduced into the filter unit from the inlet 02, and large particles of dust fall directly into the ash hopper 05. After being filtered by the filter bag assembly, the tiny dust adheres to the surface of the filter bag, and then a pulse cleaning component 06 is set for reverse blowing to make the filter bag vibrate and deform, so that when the attached dust is shaken off, it falls into the ash hopper 05 for post-processing, and the filtering capacity of the filter bag is restored to the initial level. The pulse cleaning assembly 06 is fixedly installed in each clean room 04. The pulse cleaning assembly 06 includes a pipe fixedly installed inside the clean room 04 and a steam drum connected to the pipe outside. The pipe corresponds to the regular arrangement of the filter bag assembly at the bottom, and a nozzle corresponding to the opening of each filter bag assembly is arranged in the pipe. The nozzle can be set to blow air into the filter bag assembly regularly or irregularly for cleaning. The length of the filter bag assembly is more commonly 6-8 meters. Therefore, during the installation of the electric bag and the maintenance and replacement of the filter bag after use, the dense filter bag assembly requires a large number of operators. In addition, since the operators are in a high position and have a narrow range of activities, the dust when replacing the filter bag is large and a lot of dust adheres to the filter bag, making the weight heavier, and the pipe needs to be removed for replacement.

[0004] Taking all the above factors into consideration, the installation or replacement of a large number of filter bags requires full manual work, which is very labor-intensive. In particular, when maintaining and replacing the cloth bags, it is necessary to remove the pulse cleaning assembly 06 first, and the process is cumbersome. On the other hand, in view of the length of the filter bag assembly and the non-bending characteristics of the rigid bag cage that matches the filter bag, it is difficult to arrange the filter bag assembly directly below the air outlet channel 03, because the operator does not have the working space to vertically place the filter bag assembly, which can also be seen from the figure. Therefore, this technical solution also has the defect of insufficient utilization of the internal space of the device shell 01. Summary of the invention

[0005] In view of the defects of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a bag dust removal device that can fully automatically replace the filter bag. The device can fully automatically install or replace the filter bag assembly and can make better use of the internal space for filtering.

[0006] The invention objective of the present invention is achieved through the following technical solutions: A bag dust removal device capable of fully automatically replacing filter bags, comprising a working part and an auxiliary installation and maintenance part, wherein the working part mainly comprises: a device housing, an inlet for introducing dust-containing gas, an air outlet passage arranged above the device housing and located at the center and running through the entire length, improved clean rooms arranged on both sides of the air outlet passage, and a filter unit arranged at the bottom of each improved clean room; an ash hopper arranged at the bottom of the filter unit and corresponding to each improved clean room, and a pulse dust cleaning component that can be turned upwards is arranged corresponding to each clean room; the filter unit comprises a filter bag assembly arranged vertically;

[0007] The auxiliary installation and maintenance part includes a filter bag conveying device for lifting and transporting the filter bag assembly, a working platform arranged at the upper end of the filter bag conveying device for operators to move around and install corresponding equipment, and a grabbing robot arranged on the working platform for grabbing the filter bag assembly transmitted by the filter bag conveying device and then directly installing it.

[0008] Preferably, the auxiliary installation and maintenance part also includes a guard plate arranged around the working platform and four parking casters arranged at the bottom of the filter bag conveying device. In view of the fact that the improved clean room is designed so that the pulse cleaning assembly at the top can be flipped upward, the working platform is designed to carry the corresponding equipment for lifting the filter bag and for the operators to work at the top, and the guard plate is correspondingly arranged to improve safety, and the parking casters are designed to improve the convenience of movement.

[0009] Preferably, the filter bag conveying device includes a stand, two groups of vertical and parallel sprockets arranged in the stand, and an engaging piece arranged on each chain section of the sprocket; the overall shape of the engaging piece is like a fish tail, that is, it has symmetrical arcs on both sides. Since the filter bag conveying does not require high precision, a cheap sprocket set can be selected, the sprocket set can be arranged for a long transportation distance and the synchronization of the two sets is reliable. The designed engaging piece has a simple structure, and both directions of each piece are working surfaces. The two engaging pieces have the characteristics of opening at the lowest and highest positions, that is, at the sprocket position, and are in an engaging state at other positions. By utilizing this characteristic, the lower sprocket is set to put in the filter bag, and the filter bag is taken out when it is lifted to the upper sprocket, so that the overall lifting and transportation is convenient, economical and reliable.

[0010] Preferably, the filter unit includes a flower plate arranged on the bottom surface of the clean room and capable of sliding outward relative to the bottom surface of the clean room, a sliding assembly arranged to slide the flower plate, and a through hole array arranged on the flower plate surface, in which a filter bag assembly is vertically sleeved. The flower plate is arranged to slide outward so that it can be used in combination with the flip function of the pulse cleaning assembly, and the filter bag is mechanically suspended from top to bottom, thereby changing the traditional manual installation method of the filter bag and greatly improving the installation efficiency.

[0011] Preferably, each of the two relatively improved clean rooms has a part located at the lower part of the air outlet channel. In the original technical solution, the internal space of the lower part is not utilized. The improved clean room includes a clean room shell. The upper surface of the clean room shell is located at the lower part of the air outlet channel and is provided with an exhaust port. The part located outside the air outlet channel is provided with a flip avoidance port. The front side of the clean room shell is provided with a sliding avoidance port. The edges of the flip avoidance port and the sliding avoidance port have a stop extending outward, and a sealing strip is provided on the stop. After the stop is added with the sealing strip and the corresponding sealing plate is installed, a seal can be formed.

[0012] Preferably, the lower surface of the clean room shell is provided with a receiving opening, which is rectangular and has four sides close to the corresponding side walls and has ribs extending upward, each rib is provided with a sealing strip. The ribs have two functions: one is to seal the clean room shell together with the pressing frame after the sealing strip is installed, and the other is to block the moving position of the lower slide rail and play a limiting role, so as to facilitate the sliding of the slide rail by arranging the flower plate.

[0013] Preferably, the improved clean room further comprises an inspection cover plate which is detachable by a screw and partially covers and seals the flip avoidance opening, and a sliding cover plate which is detachable by a screw and partially covers and seals the sliding avoidance opening.

[0014] Preferably, the dust removal device also includes a flipping assembly for flipping the pulse cleaning assembly upward, the flipping assembly includes two bearing seats arranged on both sides of the inner side of the accommodating port, a flipping frame hinged to the two bearing seats for installing the row pipes in the pulse cleaning assembly, a plurality of adjustable pressing parts for pressing the flower plate are arranged around the flipping frame at intervals and can be adjusted up and down, a limit sealing plate is fixedly arranged in the pulse cleaning assembly, supports are provided at both ends of the limit sealing plate, the supports are hinged to an opening and closing cylinder for opening and closing the flipping frame, the piston rod end of the opening and closing cylinder is hinged to a sliding block, and a slide rail cooperating with the sliding block is fixedly arranged on the corresponding upper surface of the clean room shell, and a convex strip is provided on the length direction of the upper surface of the limit sealing plate, and a sealing strip is provided on the convex strip. In view of the fact that the steam drum of the pulse cleaning component is outside, a limit sealing plate needs to be separately set at the connection between the steam drum and the discharge pipe. In this way, the overall sealing plate for sealing the flip avoidance port is divided into two parts. The smaller limit sealing plate is convenient for the fitting connection and sealing of the discharge pipe, and it is convenient to set the opening and closing cylinder at the limit sealing plate to control the flipping of the pulse cleaning component. The larger maintenance sealing plate is partially pressed against the limit sealing plate. The convex strip of the limit sealing plate plus the sealing strip and the other stop sealing strips together form a seal for the entire flip avoidance port.

[0015] Preferably, the sliding assembly includes two upper slide rail kits fixedly arranged on both sides of the flower plate, two lower slide rails slidably matched with the upper slide rail kits, a fixing strip with one end fixed to the clean room shell and the other end partially fitted on the lower slide rail, and a plurality of return springs arranged at intervals in the width direction of the fixing strip; the two lower slide rails are slidably arranged on the left and right sides of the accommodating opening respectively and the ends of the two lower slide rails facing outwards are connected to the servo drive motor by setting a mounting seat, the output shaft of the servo drive motor is connected to the gear, and an elastic thrust piece is arranged on the inner bottom surface of the clean room shell to prevent the flower plate from continuing to move after it is in place, and a roller is provided at the position where the elastic thrust piece contacts the flower plate. Since the dust removal device itself is a filter for dust and harmful substances, and there will be residual uncertain or corrosive substances inside the clean room, and the filtered airflow usually has a high temperature, the sliding assembly installed inside the clean room needs to avoid electrical equipment as much as possible to reduce the failure rate and avoid malfunction. Given that the only electrical equipment in this sliding assembly is the motor, and the motor is connected to the lower slide rail, that is, when the clean room is in working condition, the motor will naturally move out of the meshing area of ​​the corresponding rack along the lower slide rail. In this way, the servo drive motor will not have the possibility of displacement of the flower plate due to misoperation and motor failure, thereby damaging the filter bag assembly.

[0016] Preferably, the upper slide rail kit consists of an upper slide rail and a rack; the side of the upper slide rail away from the flower board is a guide rail profile, the guide rail profile is laterally provided with an avoidance groove, the lower part of the avoidance groove is provided with a vertical surface and an inclined surface intersecting the vertical surface, the vertical surface and the inclined surface together serve as the upper sliding part of the guide rail; the side of the upper slide rail close to the flower board is a lower pressure strip, and a lower pressure frame is fixedly arranged at the lower part of the lower pressure strip to form a closed loop and sealed around the outer edge of the flower board; the length of the guide rail profile is set to be the same as the side length connected to the flower board, the inner end of the lower pressure strip is set to be flush with the inner wall of the flower board and the other end exceeds the outer wall, and the exceeding part is provided with a pressing roller, thereby naturally forming an avoidance gap between the guide rail profile and the lower pressure strip on the outward side of the upper slide rail kit. The avoidance gap is used to avoid the movement of the gear; when closing the sliding sealing plate, the flower plate overcomes the elastic thrust piece and reaches the set position by resisting the top pressure roller. At this time, the setting of the roller and the top pressure roller allows the flower plate to slide up and down, thereby achieving the clean room sealing by pressing the flower plate.

[0017] Another technical problem to be solved by the present invention is to provide a method for replacing filter bags of an electric bag dust removal device. The method is implemented by the following technical scheme: a method for replacing filter bags of an electric bag dust removal device, using the above-mentioned electric bag dust removal device capable of fully automatic replacement of filter bags, the method steps are as follows:

[0018] Step 1: Move the stand to the front of the corresponding improved clean room. The bottom height of the work platform must be higher than the height of the sliding cover plate.

[0019] Step 2: first remove the inspection cover plate, and the servo drive motor and the gear return to the meshing position under the action of the reset spring, then remove the sliding cover plate, and the elastic thrust piece pushes the rack to mesh with the gear;

[0020] Step 3: Flip the pulse cleaning component upwards to a certain angle;

[0021] Step 4: The sliding assembly first slides the flower plate to the outer edge of the last row close to the receiving hole;

[0022] Step 5: The sprocket group starts to transfer the filter bag assembly from bottom to top, and then the grabbing robot grabs the filter bag assembly and puts it into the flower plate. Each time a row of bag cages is installed, the flower plate slides inward by a row until all the installation is completed;

[0023] Step six, the sliding assembly first resets the flower board, installs the sliding sealing plate, flips the assembly to reset the pulse cleaning assembly and also presses the flower board to complete the sealing, and finally installs the maintenance sealing plate.

[0024] In summary, the present invention has the following advantages compared with the prior art:

[0025] The present invention includes a working part and an auxiliary installation and maintenance part. The auxiliary installation and maintenance part includes a filter bag conveying device for lifting and transmitting the filter bag assembly, a working platform arranged at the upper end of the filter bag conveying device for the activities of operators and corresponding equipment, and a grasping robot arranged on the working platform for grasping, replacing or directly installing the filter bag assembly transmitted by the filter bag conveying device. The two parts are combined to form an assembly line automatic working mode when the filter bag is installed or replaced, thereby replacing manual labor and greatly improving work efficiency. The working part mainly includes: a device shell, an inlet for introducing dusty gas, an air outlet channel arranged above the device shell and located at the center and running through the entire length, an improved clean room arranged on both sides of the air outlet channel, and a filter unit arranged at the bottom of each improved clean room; an ash hopper arranged at the bottom of the filter unit and corresponding to each improved clean room, and a pulse cleaning component that can be flipped upward is arranged corresponding to each clean room; the filter unit includes a vertically arranged filter bag assembly; the pulse cleaning component is arranged to be flipped upward, and the flower plate is arranged to be lateral sliding, so that external machinery can intervene in the installation and removal, and when the pulse cleaning component flips down and resets, the adjustable pressing member arranged on its flip frame presses down the flower plate to achieve the clean room sealing and the fixation of the flower plate, thereby solving the problem of high labor intensity in the installation and replacement of the filter bag assembly and the cumbersome process of removing the pulse cleaning component. At the same time, the sliding of the flower plate makes it possible to install the filter bag assembly at the position below the air outlet channel, thereby making more use of the filtering space. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the equipment of the Zhongyuan electric bag reform technical solution in the background technology;

[0027] Figure 2 This is a schematic diagram of the structure of the present invention, which hides part of the device housing, inlet, and ash hopper;

[0028] Figure 3 It is a schematic diagram of the structure of the clean room shell;

[0029] Figure 4 A schematic diagram of the structure after the combination of the clean room, pulse cleaning components and filter unit is improved;

[0030] Figure 5 A schematic diagram of the structure from another angle after the clean room is improved by removing the inspection cover and combining it with the pulse cleaning component and the filter unit;

[0031] Figure 6 It is a structural diagram of the installation of filter bags after the clean room housing and pulse cleaning components are turned upward, the flower plate slides outward, and then combined with the auxiliary installation and maintenance parts;

[0032] Figure 7 for Figure 4 A partial enlarged view of the middle A;

[0033] Figure 8 for Figure 5 A partial enlarged view of point B in the middle;

[0034] Fig. 9 This is a schematic diagram of the structure of the flip assembly, pulse cleaning assembly and flower plate in the clean room shell. For easy observation, the clean room shell is partially removed;

[0035] Fig.10 This is a schematic diagram of the structure of the flower plate and the flip assembly in the clean room shell after flipping upwards. For easy observation, the clean room shell is partially cut away;

[0036] Fig.11 for Fig.10 A partial enlarged view of point D in the middle;

[0037] Fig.12 It is a schematic diagram of the structure after the sliding assembly and the flower plate are combined;

[0038] Fig.13 for Fig.12 A partial enlarged view of point E in the middle;

[0039] Fig.14 It is a schematic diagram of the reverse structure after the sliding assembly and the flower plate are combined;

[0040] Fig.15 It is a structural schematic diagram of another angle after the sliding assembly and the flower plate are combined;

[0041] Fig.16 for Fig.15 A partial enlarged view of point F in the middle;

[0042] Fig.17 Schematic diagram of the structure after the sliding sealing plate and pulse cleaning component are removed to improve the clean room;

[0043] Fig.18 for Fig.17 A partial enlarged view of the H in the middle;

[0044] Fig.19 for Figure 6 A partial enlarged view of point C in the middle.

[0045] Markings in the figure: working part G; device shell 01; inlet 02; air outlet channel 03; clean room 04; ash hopper 05; pulse cleaning component 06; exhaust pipe 062; steam drum 063; improved clean room 100; clean room shell 110; exhaust port 111; flip avoidance port 112; sliding avoidance port 115; accommodating port 113; retaining edge 114; filter unit 200; flip assembly 600; flower plate 210; sliding assembly 220; filter bag assembly 22rd; slide rail kit 221; slide rail 221a; rack 221b; avoidance groove 221c; upper sliding part 221d; lower pressing frame 221e; servo drive motor 22dj; gear 22cc; guide rail profile 2 2cx; lower pressure strip 22xy; lower sliding rail 222; lower sliding part 222a; limit strip 222b; fixing strip 223; reset spring 224; inspection sealing plate 120; sliding sealing plate 130; bearing seat 610; flip frame 620; adjustable pressing member 621; limit sealing plate 630; support 631; opening and closing cylinder 632; sliding block 633; ​​convex strip 634; avoidance gap 22br; top pressure roller 22dy; elastic thrust piece 22zt; auxiliary installation and maintenance part F; filter bag conveying device 300; stand 310; sprocket set 320; engaging piece 321; working platform 400; guard plate 410; parking caster 30g; grasping robot 500. DETAILED DESCRIPTION

[0046] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0047] Example 1

[0048] like Figure 2 As shown, a bag dust removal device capable of fully automatically replacing filter bags comprises a working part G and an auxiliary installation and maintenance part F. The overall structure of the working part G is roughly the same as Figure 1 The original electric bag dust removal device is the same, and the operating principle is exactly the same. The working part G mainly includes: Figure 1 The device housing 01 shown in the figure, the inlet 02 for introducing dusty gas, the gas outlet passage 03 which is arranged above the device housing 01 and is located at the center and runs through the entire length, Figure 2 The improved clean room 100 is arranged on both sides of the air outlet channel 03. Figure 5 The filter unit 200 shown is arranged at the bottom of each improved clean room 100; the ash hopper 05 arranged at the bottom of the filter unit 200 and corresponding to each improved clean room 100, Figure 4 As shown, each clean room 04 is provided with a pulse cleaning assembly 06 that can be flipped upwards. Figure 4 The flip assembly 600 shown is used to flip the pulse cleaning assembly 06 upward; the filter unit 200 includes a flower plate 210 arranged on the bottom surface of the clean room and capable of sliding outward relative to the bottom surface of the clean room. Fig.10The sliding assembly 220 is configured to slide the flower plate 210. Fig.14 , the flower plate 210 is provided with through holes in an array, and the filter bag assembly 22rd is vertically sleeved in the through holes;

[0049] Figure 2-4 As shown, two improved clean rooms 100 on opposite sides are partially located at the lower part of the air outlet channel 03, and the improved clean room 100 includes a clean room shell 110, and the upper surface of the clean room shell 110 is provided with an exhaust port 111 at the lower part of the air outlet channel 03, and the part located outside the air outlet channel 03 is provided with a flip avoidance port 112 for the pulse cleaning component 06 to flip upward, and the front side of the clean room shell 110 is provided with a sliding avoidance port 115 for the flower plate 210 to slide, and the edges of the flip avoidance port 112 and the sliding avoidance port 115 are provided with stoppers extending outward, and the stoppers are provided with sealing strips, and the clean room shell 110 The lower surface of the housing is provided with a receiving opening 113 for receiving the flower plate 210 and the filter bag assembly 22rd. The receiving opening 113 is rectangular, and its four sides are close to the corresponding side walls and have a rib 114 extending upward. Each rib 114 is provided with a sealing strip. The pulse cleaning assembly 06 includes a discharge pipe 062 arranged inside the clean room shell 110 and a steam drum 063 connected to the discharge pipe outside.

[0050] The improved clean room 100 further includes an inspection cover plate 120 that is detachable through a screw and partially covers and seals the flip avoidance opening 112, and a sliding cover plate 130 that is detachable through a screw and partially covers and seals the sliding avoidance opening 115;

[0051] Figure 9-12As shown, the flip assembly 600 includes two bearing seats 610 arranged on both sides of the inner side of the accommodating port 113, a flip frame 620 hingedly connected to the two bearing seats 610 for installing the row pipes in the pulse cleaning assembly 06, a plurality of adjustable pressing members 621 for pressing the flower plate 210 are arranged around the flip frame 620 at intervals and can be adjusted up and down, and a limit sealing plate 630 is fixedly arranged under the steam drum in the pulse cleaning assembly 06; both ends of the limit sealing plate 630 are provided with supports 631, and the supports 631 are hingedly connected to the opening and closing cylinder 632 for opening and closing the flip frame 620, and the piston rod of the opening and closing cylinder 632 The end is hinged with a sliding block 633, and the sliding rail matched with the sliding block 633 is fixedly arranged on the corresponding upper surface of the clean room shell 110. A convex strip 634 is arranged on the upper surface of the limit sealing plate 630 in the length direction, and a sealing strip is arranged on the convex strip 634; when the flip assembly 600 is working, it is in a downward flip state, that is, the whole is in a closed state. At this time, the flip frame 620 is horizontal with the lower flower plate 210 and the adjustable pressing member 621 presses the flower plate 210 to make it fixed, and the limit sealing plate 630 is pressed against the corresponding sealing strip of the clean room shell 110 and the pressed part forms a seal. At this time, the position of the sealing strip on the upper part of the convex strip 634 is The position and height are flush with the sealing strips on both sides. The purpose of setting the height flush is to install the inspection sealing plate 120, and the inspection sealing plate 120 is partially attached to the upper surface of the limiting sealing plate 630, and the sealing strips on the stopper of the flip avoidance opening 112 and the sealing strips on the convex strip 634 are pressed together to make the flip avoidance opening 112 completely sealed; when opening, the inspection sealing plate 120 must be removed first, and the opening and closing cylinder 632 must be started, and its piston rod pushes the lower flip frame 620 to flip upward and open a certain angle. Since the clean room shell 110 is partially located below the air outlet channel 03 and the inspection sealing plate 120 needs to be turned to the flip avoidance The opening 112 is closed, so the side of the flip avoidance opening 112 on the inside needs to be set on the outside so that the side can be set with an exposed stop to form a closed loop with the stop of other sides. In order to make full use of more space as a filter unit, the hinge point of the flip frame 620 and the bearing seat 610 is set near the inner wall of the clean room shell 110, so as to arrange the nozzle cleaning, that is, the upward flip angle of the flip frame 620 is limited and cannot be opened too large. Therefore, it is necessary to design the flower plate 210 to be able to slide outward, so that each filter bag can be close to the outside of the clean room shell 110, that is, Figure 6 position as shown to complete the snug installation.

[0052] Fig.11 and Fig.13As shown, the sliding assembly 220 includes two upper slide rail sets 221 fixedly arranged on both sides of the flower plate 210, two lower slide rails 222 slidingly matched with the upper slide rail sets 221, a fixing strip 223 with one end fixed to the clean room shell 110 and the other end partially attached to the lower slide rail 222, and a plurality of return springs 224 arranged in the width direction of the fixing strip 223 at intervals; the two lower slide rails 222 are respectively slidably arranged on the left and right sides of the receiving opening 113 and the ends of the two lower slide rails 222 facing outward are installed by setting The seat is connected to the servo drive motor 22dj, and the output shaft of the servo drive motor 22dj is connected to the gear 22cc, and the gear 22cc can be engaged or disengaged with the rack 221b; the sliding assembly 220 also includes an elastic thrust piece 22zt arranged on the inner bottom surface of the clean room shell 110 to prevent the flower plate 210 from continuing to move after it is in place, and a roller is arranged at the part where the elastic thrust piece 22zt contacts the flower plate 210; the return spring 224 of the sliding assembly 220 pushes the lower rail 222 to the retaining edge 114 in the working state, see Fig.11 .

[0053] Fig.16 As shown, the upper rail kit 221 is composed of an upper rail 221a and a rack 221b; the side of the upper rail 221a away from the flower plate 210 is a guide rail profile 22cx, and the guide rail profile 22cx is laterally provided with an avoidance groove 221c, and the lower part of the avoidance groove 221c is provided with a vertical surface and an inclined surface intersecting with the vertical surface, and the vertical surface and the inclined surface together serve as the upper sliding part 221d of the guide rail; the side of the upper rail 221a close to the flower plate 210 is a lower pressure strip 22xy, and the flower plate 2 is fixedly provided at the lower part of the lower pressure strip 22xy 10 forms a closed loop and sealed pressing frame 221e along the outer edge; the length of the guide rail profile 22cx is set to be the same as the side length connected to the flower plate 210, and the inner end of the lower pressing strip 22xy is set to be flush with the inner wall of the flower plate 210 and the other end exceeds the outer wall, and the exceeding part is provided with a pressing roller 22dy, so that an avoidance gap 22br is naturally formed between the guide rail profile 22cx and the lower pressing strip 22xy on the outer side of the upper slide rail kit 221, and the avoidance gap 22br is used to avoid the movement of the gear 22cc;

[0054] Fig.13 As shown, the cross section of the lower rail 222 is generally in an inverted T shape, wherein a lower sliding portion 222a matching the upper sliding portion 221d is provided on the side facing the flower plate 210, and a limit strip 222b is provided on the upper end surface of the lower rail 222 to limit the upward movement of the upper rail set 221; the lower part of the lower rail 222 is away from the flower plate 210 and extends into the lower part of the fixing strip 223, and the two are tightly slidably matched, and the length of the other side extending outward is set to be able to contact the retaining edge 114 when the return spring 224 is in an extended state;

[0055] Combination Figure 10-11 , Figure 13-14 , Figure 16-18 , introduce the working principle of the sliding assembly 220, Fig.17 In order to improve the state of the clean room 100 when it is in normal operation, at this time, after the sliding sealing plate 130 is closed, a convex block is set on the inner surface of the sliding sealing plate 130 corresponding to the position of the pressing roller 22dy, and the convex block presses the pressing roller 22dy to make the flower plate 210 overcome the elastic thrust member 22zt and slide to the correct position. The correct position refers to the position just above the retaining edge 114. The closing of the opening and closing cylinder 632 causes the flip frame 620 to rotate to the discharge pipe 062 and be parallel to the flower plate 210, and the adjustable pressing member 621 is correspondingly in a state of pressing against the edge of the flower plate 210. The pressing force The flower plate 210 is forced to descend as a whole until the pressing frame 221e is pressed against the sealing strip of the retaining edge 114 to form an overall seal. The top pressure roller 22dy and the roller in the elastic thrust member 22zt set above enable the flower plate 210 to descend smoothly. The overall descent of the flower plate 210 also causes the upper sliding part 221d to force the lower sliding part 222a to overcome the thrust of the return spring 224 so that the two lower rails 222 move to their respective outer sides. The purpose of the outer movement is to make the servo drive motor 22dj and the gear 22cc move together as Fig.18 As shown, the meshing area of ​​the corresponding rack 221b is moved out, so that the servo drive motor 22dj does not have the possibility of causing the flower plate to move due to misoperation or motor failure, thereby damaging the filter bag assembly 22rd; when the sliding component 220 needs to slide outward, the maintenance sealing plate 120 is first opened to start the opening and closing cylinder 632 to make the flip frame 620 flip upward. At this time, the pressure on the flower plate 210 disappears, and the lower rail 222 is reset under the action of the reset spring 224. Fig.11 As shown, at this time, the cooperation between the sliding portion 222a and the upper sliding portion 221d is as shown in FIG. Fig.13 As shown, the two are in a fitted state, and the limit strip 222b enters the avoidance groove 221c to limit the height of the flower plate 210 moving up. The lower part of the lower slide rail 222 contacts the retaining edge 114, so that the relative position of the sliding portion 222a and the upper sliding portion 221d is not clamped, and there is a small gap between the vertical surface and the upper plane, that is, they are in a state of close sliding. The purpose of resetting the lower slide rail 222 is also to make the flower plate 210 rise, so that the frame 221e and the retaining edge 114 are pressed down. The sealing strip is separated to form a gap, and at the same time, the lower slide rail 222 is reset, which also makes the gear 22cc connected to the servo drive motor 22dj return to the position where it can mesh with the rack 221b. Then, by opening the sliding sealing plate 130, the elastic thrust member 22zt releases the elastic force to push the flower plate 210 as a whole forward a certain distance, so that the rack 221b enters into meshing with the gear 22cc. At this time, the two servo drive motors 22dj are started, and the flower plate 210 as a whole is driven by the gear 22cc to slide outward.

[0056] Figure 6 , Fig.19 As shown, the auxiliary installation and maintenance part F includes a filter bag conveying device 300 for lifting and transporting the filter bag assembly 22rd, a work platform 400 arranged at the upper end of the filter bag conveying device 300 for operators and corresponding equipment to move around, a grabbing robot 500 arranged on the work platform 400 for grabbing and replacing the filter bag assembly 22rd transferred from the filter bag conveying device 300 or directly installing it, a guard plate 410 arranged around the work platform 400, and four stationary casters 30g arranged at the lower part of the filter bag conveying device 300;

[0057] The filter bag conveying device 300 includes a stand 310, two sets of vertical and parallel sprocket groups 320 arranged in the stand 310, and an engaging piece 321 arranged on each chain section of the sprocket group 320; the overall shape of the engaging piece 321 is like a fish tail, that is, it has symmetrical arcs on both sides. When in use, two adjacent engaging pieces 321 are combined to engage the filter bag assembly 22rd. After the two adjacent engaging pieces 321 of the same level engage the filter bag assembly 22rd, they are lifted from bottom to top as the chain rotates. When lifted to the top, the two engaging pieces 321 are naturally separated under the action of the sprocket. At this time, the grasping robot 500 grasps the filter bag assembly 22rd. The placement of the filter bag assembly 22rd at the bottom also utilizes this principle.

[0058] The use of the automatic installation of filter bags of the present invention: the stand 310 is transferred to the front of the corresponding improved clean room 100, the bottom height of the working platform 400 needs to be higher than the height of the sliding sealing plate 130, so that the flower plate 210 can slide out smoothly, first remove the inspection sealing plate 120 so that the servo drive motor 22dj and the gear 22cc return to the meshing position first, and then remove the sliding sealing plate 130 so that the elastic thrust member 22zt pushes the rack 221b to mesh with the gear 22cc, and the flip assembly 600 flips the pulse cleaning assembly 06 upward by a certain angle. The installation of the filter bag assembly 22rd can be installed separately from the bag cage and the cloth bag, or it can be installed together. The only difference between the two is that the separate installation requires manual installation of the cloth bag on each of the flower plates. The sliding assembly 220 first slides the flower plate 210 to the outer side of the last row close to the accommodating hole 113, and the sprocket group 320 begins to transmit the filter bag assembly 22rd from bottom to top. Then the grabbing robot 500 grabs the filter bag assembly 22rd and puts it into the flower plate. Each time a row of bag cages is installed, the flower plate 210 slides inward by a row until all the installations are completed. The sliding assembly 220 first resets the flower plate 210, installs the sliding sealing plate 130, and the flipping assembly 600 resets the pulse cleaning assembly 06 and also presses the flower plate to complete the sealing. The maintenance sealing plate 120 is installed. After one module is installed, the stand 310 is moved to the next improved clean room 100 module to continue the operation. The principles of removal and replacement are the same as those of new installation, that is, the improved design of the sliding flower plate 210 and the flippable pulse cleaning component 06 provide space for mechanization of the operation, on which basis various methods can be evolved, such as the auxiliary installation and maintenance part F can also be movably arranged on the outer surface of the device shell 01, as well as other similar alternatives.

[0059] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A method for replacing filter bags in an electric bag dust removal device, characterized in that: The invention relates to a bag dust removal device that uses a fully automatic filter bag replacement device, the device comprising: a working part (G) and an auxiliary installation and maintenance part (F), the working part (G) mainly comprising: a device housing (01), an inlet (02) for introducing dust-containing gas, an air outlet channel (03) arranged above the device housing (01) and located at the center and running through the entire length, improved clean rooms (100) arranged on both sides of the air outlet channel (03), and a filter unit (200) arranged at the bottom of each improved clean room (100); an ash hopper (05) arranged at the bottom of the filter unit (200) and corresponding to each improved clean room (100), and a pulse dust cleaning component (06) that can be turned upwards is arranged corresponding to each clean room (04); the filter unit (200) comprises a filter bag assembly (22rd) arranged vertically; The auxiliary installation and maintenance part (F) comprises a filter bag conveying device (300) for lifting and transporting the filter bag assembly (22rd), a working platform (400) arranged at the upper end of the filter bag conveying device (300) for workers to move around and install corresponding equipment, and a grabbing robot (500) arranged on the working platform (400) for grabbing the filter bag assembly (22rd) transferred from the filter bag conveying device (300) and then directly installing it; The filter unit (200) comprises a flower plate (210) arranged on the bottom surface of the clean room and capable of sliding outward relative to the bottom surface of the clean room, a sliding assembly (220) configured to slide the flower plate (210), through holes being arranged in an array on the surface of the flower plate (210), and a filter bag assembly (22rd) being vertically sleeved in the through holes; The filter bag conveying device (300) comprises a stand (310), two groups of vertical and parallel sprocket groups (320) arranged in the stand (310), and an engaging piece (321) arranged on each chain link in the sprocket group (320); the overall shape of the engaging piece (321) is like a fish tail, that is, it has symmetrical arcs on both sides; Each of the two opposing improved clean rooms (100) has a portion located at the lower part of the air outlet channel (03), the improved clean room (100) comprising a clean room shell (110), an exhaust port (111) being provided at a position of the upper surface of the clean room shell (110) located at the lower part of the air outlet channel (03), a flip avoidance port (112) being provided at a portion located outside the air outlet channel (03), a sliding avoidance port (115) being provided at the front side of the clean room shell (110), the edges of the flip avoidance port (112) and the sliding avoidance port (115) both having a stop extending outward, and a sealing strip being provided on the stop; The lower surface of the clean room shell (110) is provided with a receiving opening (113), the receiving opening (113) is rectangular, the four sides of which are close to the corresponding side walls and the four sides have ribs (114) extending upwards, and each rib (114) is provided with a sealing strip; The improved clean room (100) further comprises an inspection cover plate (120) that is detachable via a screw and partially covers and seals the flip avoidance opening (112), and a sliding cover plate (130) that is detachable via a screw and covers and seals the sliding avoidance opening (115); The dust removal device also includes a flip assembly (600) for flipping the pulse cleaning assembly (06) upwards, the flip assembly (600) including two bearing seats (610) arranged on both sides of the inner side of the receiving opening (113), a flip frame (620) hingedly connected to the two bearing seats (610) for mounting the row of pipes in the pulse cleaning assembly (06), a plurality of adjustable pressing members (621) for pressing the flower plate (210) are arranged around the flip frame (620) at intervals and can be adjusted up and down, and are fixedly arranged on the pulse cleaning assembly The limiting sealing plate (630) in the component (06) has supports (631) at both ends of the limiting sealing plate (630), the supports (631) are hingedly connected to an opening and closing cylinder (632) for opening and closing the flip frame (620), the piston rod end of the opening and closing cylinder (632) is hingedly connected to a sliding block (633), a sliding rail matched with the sliding block (633) is fixedly arranged on the corresponding upper surface of the clean room shell (110), a convex strip (634) is provided on the upper surface of the limiting sealing plate (630) in the length direction, and a sealing strip is provided on the convex strip (634); The sliding assembly (220) comprises two upper slide rail assemblies (221) fixedly arranged on both sides of the flower plate (210), two lower slide rails (222) slidingly matched with the upper slide rail assemblies (221), a fixing strip (223) with one end fixed to the clean room shell (110) and the other end partially fitted on the lower slide rail (222), and a plurality of return springs (224) arranged at intervals in the width direction of the fixing strip (223); the two lower slide rails (222) are respectively slidably arranged on the left and right sides of the accommodating opening (113) and the ends of the two lower slide rails (222) facing outwards are connected to the servo drive motor (22dj) by means of a mounting seat, the output shaft of the servo drive motor (22dj) is connected to a gear (22cc), and an elastic thrust piece (22zt) is arranged on the inner bottom surface of the clean room shell (110) to prevent the flower plate (210) from continuing to move after it is in place, and a roller is provided at the position where the elastic thrust piece (22zt) contacts the flower plate (210); The steps are as follows: Step 1: Move the stand (310) to the front of the corresponding improved clean room (100), and the bottom height of the working platform (400) must be higher than the height of the sliding cover plate (130); Step 2: first remove the inspection cover plate (120), and use the flip assembly (600) to flip the pulse cleaning assembly (06) upwards to a certain angle; the servo drive motor (22dj) and the gear (22cc) first return to the meshing position under the action of the return spring, and then remove the sliding cover plate (130), and use the elastic thrust member (22zt) to push the rack (221b) to mesh with the gear (22cc); Step 3: The sliding assembly (220) first slides the flower plate (210) to the outer side of the last row close to the receiving opening (113); Step 4: The sprocket assembly (320) starts to transfer the filter bag assembly (22rd) from bottom to top, and then the grabbing robot (500) grabs the filter bag assembly (22rd) and puts it into the flower plate. Each time a row of bag cages is installed, the flower plate (210) slides inward by a distance of one row until all the installation is completed; Step five, the sliding assembly (220) first resets the flower plate (210), installs the sliding sealing plate (130), and the flip assembly (600) then resets the pulse cleaning assembly (06), while also pressing the flower plate to complete the sealing, and finally installs the inspection sealing plate (120).

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