A pulse-jet cleaning system for baghouse dust collection

Abstract

This utility model relates to a jet-blowing system for baghouse dust collection, comprising an upper chamber, a middle chamber, and a dust hopper connected sequentially from top to bottom. The upper chamber houses a fixed-point moving device, jet blowers, a driving air pipeline, and a jet-blowing air pipeline. The middle chamber houses multiple filter bags. High-pressure airflow drives the fixed-point moving device intermittently to a fixed point via the driving air pipeline. The jet blowers are mounted on the fixed-point moving device and are driven by the device to intermittently move to a fixed point, achieving row-by-row jet-blowing of the filter bags. This jet-blowing system for baghouse dust collection significantly saves internal space in the upper chamber, facilitating later maintenance and reducing equipment costs and expenses. Compared to traditional methods using cylinders, gears, and chains for driving, it features emergency braking and precise positioning. Furthermore, this utility model enables automatic steering, eliminating the need for manual switching of the working direction.

Description

Technical Field

[0001] This utility model relates to a jet cleaning system for baghouse dust collection, belonging to the technical field of dust collection facilities. Background Technology

[0002] Most existing flue gas dust removal systems employ baghouse dust collection technology. In these systems, the pulse-jet cleaning system typically uses fixed jet pipes to clean the filter bags. Each row of filter bags is handled by a single fixed jet pipe, with multiple nozzles on each pipe, each corresponding to the top opening of a filter bag. This multi-row configuration requires multiple parallel fixed jet pipes, making the internal space of the baghouse dust collector extremely cramped. This hinders the maintenance and replacement of the filter bags, resulting in significant time and labor waste during production inspection and maintenance. This waste of labor costs and prolonged downtime negatively impacts and restricts the overall production efficiency of the upstream production line, causing substantial economic losses for the company.

[0003] Chinese patent document CN110152407A discloses a jet-blowing system for a baghouse dust collector and its application. The system includes a compressed air tank, a left-side cylinder, a right-side cylinder, a movement control mechanism, a moving trolley, a jet-blowing mechanism, and a PLC control system. The left-side and right-side cylinders are respectively connected to the movement control mechanism, and the moving trolley is connected to the movement control mechanism. The jet-blowing mechanism is mounted on the moving trolley. The compressed air tank is connected to the left-side and right-side cylinders via pipelines, on which solenoid valves A and B are installed. The compressed air tank is also connected to the jet-blowing mechanism, and a solenoid valve C is installed between the jet-blowing mechanism and the compressed air tank. Solenoid valves A, B, and C are controlled by the PLC control system. This utility model simplifies the traditional structure of baghouse dust collectors to a certain extent and saves a significant amount of physical space. This solution uses a cylinder to drive gears and chains to move the mobile trolley forward. The intermittent movement of the mobile trolley is achieved by using high-voltage pulses to reciprocate the piston rod of the cylinder. Although it is an improvement over the traditional solution, it still has problems such as high cost, complex structure, and easy derailment of the drive chain. At the same time, it also has problems such as poor positioning accuracy and easy aging of electrical circuits. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a jet-blowing system for baghouse dust collection. This jet-blowing system utilizes a high-pressure air source as the driving force, significantly reducing other driving devices, further freeing up physical space, and offering advantages such as precise positioning and emergency braking.

[0005] The technical solution of this utility model is as follows:

[0006] A pulse-jet cleaning system for baghouse dust collection includes an upper chamber, a middle chamber, and a dust hopper connected sequentially from top to bottom. The upper chamber contains a fixed-point moving device, a pulse-jet nozzle, a driving air pipeline, and a pulse-jet air pipeline. The middle chamber contains multiple dust collection bags. High-pressure airflow drives the fixed-point moving device to move intermittently to a fixed point via the driving air pipeline. The pulse-jet nozzle is mounted on the fixed-point moving device and is carried by the fixed-point moving device to move intermittently to a fixed point, temporarily connecting with the pulse-jet air pipeline in turn to realize the pulse-jet cleaning operation on the dust collection bags.

[0007] The fixed-point moving device includes limit switches, guide tubes, sliding direction switchers, left driver, fixed-point shifter, and right driver; the limit switches are set on the left and right sides of the top wall of the upper housing, the two ends of the guide tubes are fixedly connected to the inner side wall of the upper housing, the sliding direction switchers are set inside the guide tubes and their two ends are elastically connected to the inner side wall of the upper housing respectively, and the direction of the sliding direction switchers can be switched by the limit switches on the left and right sides;

[0008] The left drive, the fixed-point shifter, and the right drive are all mounted on the guide tube. The top of the left drive and the right drive are each connected to a thrust reverser. The top of the fixed-point shifter is connected to a jet pipe. Both ends of the jet pipe are placed inside the thrust reverser. A spring is fitted on the thrust reverser. One end of the spring is connected to the thrust reverser and the other end is connected to the jet pipe. High-pressure airflow enters the jet pipe and pushes the left drive or the right drive forward. The left drive or the right drive drives the fixed-point shifter to move forward intermittently in a fixed position.

[0009] Preferably, the driving air pipeline includes a main driving air pipe, driving air branch pipes, and a pulse valve. The main driving air pipe connects to multiple parallel driving air branch pipes, and the pulse valve is installed on each driving air branch pipe. The pulse valve is controlled by a PLC. The purpose of this design is that when the driving air branch pipe is connected to the jet pipe, the pulse valve opens and injects high-pressure airflow into the jet pipe, driving the left or right actuator to move the positioning shifter to the next position.

[0010] Preferably, the blowing air pipeline includes a main blowing air pipe, blowing air branch pipes, and a pulse valve. The main blowing air pipe is connected to multiple blowing air branch pipes arranged in parallel. The pulse valve is installed on the blowing air branch pipe and is controlled by a PLC.

[0011] Preferably, the blower includes a blow tube and blow nozzles, with multiple blow nozzles arranged in parallel connected to the blow tube, and the blow tube is fixedly connected to the bottom of the positioning device.

[0012] Preferably, the middle box also includes a bag perforation plate with neatly arranged openings, and the top opening of the bag fits over these openings. The advantage of this design is that the bag perforation plate allows for the neat arrangement of multiple rows and columns of bags, facilitating batch blowing operations of the bags by the nozzles.

[0013] Preferably, the two ends of the blow tube are provided with C-shaped brackets II, and the bottom of the brackets II are provided with casters, which are placed in the guide grooves on the left and right sides of the bag perforated plate.

[0014] Preferably, the limit switch includes a bracket I, a guide plate, a limit post A, and a limit post B; the top of the bracket I is connected to the top wall of the upper housing, one end of the limit post A and the limit post B are fixedly connected to the bracket I, and the other end passes through a displacement hole opened on the guide plate, and a bearing is connected to the bottom end of the guide plate.

[0015] Preferably, the sliding switch includes a left sliding cylinder, a connecting plate, and a right sliding cylinder connected in sequence; the top of both the left and right sliding cylinders are provided with directional plates, and guide pulleys are symmetrically arranged on both sides of the left and right sliding cylinders; and multiple sets of symmetrically arranged lifters are provided on one side of the connecting plate.

[0016] Preferably, the lifter is a wedge-shaped plate with a ramp-type lifting slide.

[0017] Preferably, the guide tube is provided with a limit window hole, a drive baffle hole and a locking buckle rail, the locking buckle rail is provided on the outer wall of the guide tube, and the drive baffle hole is symmetrically provided on both sides of the locking buckle rail.

[0018] Preferably, two parallel slide tracks are symmetrically arranged on the left and right inner sidewalls of the guide tube, and the guide pulley is placed in the slide track.

[0019] Preferably, the guide pulley includes a horizontal pulley and a vertical pulley connected together. The advantage of this design is that it ensures the stability of the guide pulley within the track while reducing the sliding friction.

[0020] Preferably, the inner cavity of the guide tube is provided with multiple equally spaced drive stops, each drive stop group including two drive stops symmetrically arranged on the left and right; the drive stops include a fixed frame, a baffle, a spring, guide shaft A, guide shaft B, and a drive lifting shaft. The fixed frame is fixed to the inner wall of the guide tube. One end of guide shaft A and guide shaft B is connected to the fixed frame, and the other end is placed in the guide hole opened in the baffle. Guide shaft B is connected to the baffle through the spring. One end of the drive lifting shaft is fixed to the bottom of the baffle, and the other end is placed in the drive lifting slide of the lifter. The top of the baffle is located at the drive blocking window hole. The advantage of this design is that during the direction switching process, the lifter drives the left and right baffles of each pair of drive stops to extend out of the drive blocking window hole in turn, realizing the directional limiting function of the left / right drive.

[0021] Preferably, the left and right actuators have the same structure, including a cylindrical slider, a column, and a lifting plate. The cylindrical slider is sleeved on the outer wall of the guide tube, and the top of the cylindrical slider is connected to the reverse thrust tube through the column. The lifting plate is horizontally connected to the column. The purpose of this design is that when the right actuator reaches the rightmost end of the guide tube or the left actuator reaches the leftmost end of the guide tube, the lifting plate impacts the bottom of the near-end limit switch, lifting the limit switch upward, thereby releasing the fixed restriction of the limit switch on the sliding switch. Then, under the combined action of the springs at both ends, the sliding switch slides in the opposite direction, realizing the fixed restriction of the sliding switch on the other side.

[0022] Preferably, a jet pipe distance limiter is provided on the outer wall of the end of the jet pipe, and a thrust pipe distance limiter is provided on the inner wall of the end of the thrust pipe, with the jet pipe distance limiter able to contact the thrust pipe distance limiter. The advantage of this design is that, with one end of the jet pipe located inside the thrust pipe, during the relative movement of the jet pipe and the thrust pipe in opposite directions, after the jet pipe distance limiter and the thrust pipe distance limiter approach and contact each other, they can achieve mutual dragging and traction during movement.

[0023] Preferably, the top of the blowpipe is connected to an air receiving pipe, and the bottom of the blowpipe is connected to a driving pipe.

[0024] Preferably, the fixed-point shifter includes a cylindrical slider, which is sleeved on the outer wall of the guide tube, and the top of the cylindrical slider is connected to the bottom of the drive tube.

[0025] Preferably, a pressure device is provided at the bottom of the drive tube, and a left release device and a right release device are respectively provided on both sides of the drive tube, which are positioned on both sides of the fixed-point shifter. The advantage of this design is that the airflow enters the drive tube through the air receiving pipe, driving the pressure device to move downward. The downward movement of the pressure device will cause the two outer ends of the left and right release devices to tilt upward, thereby releasing the fixation of the fixed-point shifter.

[0026] Preferably, the left release device includes a left position stop, a left crossbeam, and a left vertical support rod that are hinged sequentially. The bottom of the left vertical support rod is fixedly connected to the cylindrical slider of the fixed-point shifter. Both the left position stop and the left crossbeam rod are provided with a single-sided protrusion. The advantage of this design is that the single-sided protrusion ensures that the left position stop and the left crossbeam rod can only rotate in one direction during rotation.

[0027] Preferably, the right release device includes a right position stop bar, a right crossbeam bar and a right vertical support bar that are hinged in sequence. The bottom of the right vertical support bar is fixedly connected to the cylindrical slider of the fixed-point shifter. Both the right position stop bar and the right crossbeam bar are provided with a single-sided protrusion.

[0028] Preferably, the pressure device includes a main rod, which is provided with a pressure circular plate, a pressure rod, a limiting baffle, and a locking buckle from top to bottom; a horizontal circular hole baffle is provided on the inner wall of the drive tube, and two symmetrically arranged vertical sliding grooves are provided on the side wall; the pressure rod extends out of the sliding groove and contacts the left crossbeam and the right crossbeam; the main rod passes through the circular hole baffle and the limiting baffle is located below the circular hole baffle; a spring is sleeved on the main rod and the spring is located between the pressure rod and the circular hole baffle.

[0029] Preferably, the locking buckle includes a left diagonal brace, a right diagonal brace, a left cross brace, and a right cross brace; the bottom ends of the left diagonal brace and the right diagonal brace are hinged to the main rod together by a connecting shaft A, the top end of the left diagonal brace is hinged to one end of the left cross brace by a connecting shaft B, the top end of the right diagonal brace is hinged to one end of the right cross brace by a connecting shaft C, and the other ends of the left cross brace and the other ends of the right cross brace are hinged to a connecting shaft D. The connecting shaft D is placed in a sliding hole opened on the main rod and the connecting shaft D is connected to the main rod by a spring.

[0030] Technical features and beneficial effects of this utility model:

[0031] 1. Compared with the traditional point-to-point blowing method with multiple rows of fixed blowing pipes, the jet blowing system of this utility model bag dust removal process can greatly save the internal space of the upper chamber, facilitate later maintenance, and reduce equipment costs and expenses.

[0032] 2. Compared with the traditional method of driving dust collection using cylinders, gears, and chains, the jet-blowing system of this utility model has the functions of emergency braking and precise positioning. Furthermore, this utility model can achieve automatic steering, eliminating the need for manual switching of the working direction, thus achieving the comprehensive benefits of improved work efficiency, labor savings, and cost reduction. The entire operation process uses only high-pressure pulsed airflow as the power source, replacing electricity and other power sources, making the operation safer and more reliable, and conforming to the ecological concepts of energy conservation, emission reduction, and low-carbon environmental protection. Attached Figure Description

[0033] Figure 1 This is a front view of the overall structure of the spray system of this utility model;

[0034] Figure 2 This is a side view of the overall structure of the spray system of this utility model;

[0035] Figure 3 This is a top view of the overall structure of the spray system of this utility model;

[0036] Figure 4 This is a partial structural schematic diagram of the fixed-point moving device in this utility model;

[0037] Figure 5 This is a schematic diagram of the guide tube structure in this utility model;

[0038] Figure 6 This is a schematic diagram of the sliding switch in this utility model;

[0039] Figure 7 This is a front view of the limit switch in this utility model;

[0040] Figure 8 This is a side view of the limit switch in this utility model;

[0041] Figure 9 This is a schematic diagram of the structure of the blower in this utility model;

[0042] Figure 10 This is a schematic diagram of the fixed-point shifter in this utility model;

[0043] Figure 11 This is a schematic diagram of the locking buckle in this utility model;

[0044] Figure 12 This is a schematic diagram of the drive tube in this utility model;

[0045] Figure 13 This is a schematic diagram of the structure of the left release device in this utility model;

[0046] Figure 14 This is a schematic diagram of the right release device in this utility model;

[0047] Figure 15 This is a schematic diagram of the pressure device in this utility model;

[0048] Figure 16 This is a schematic diagram of the lifting device in this utility model;

[0049] Figure 17 This is a schematic diagram showing the operation of the drive gear and the lifting device in this utility model.

[0050] Figure 18 This is a schematic diagram of the drive gear in this utility model;

[0051] Figure 19 This is a schematic diagram of the structure of the left driver in this utility model;

[0052] Figure 20 This is a schematic diagram of the right driver in this utility model;

[0053] Figure 21 This is a cross-sectional view of the locking buckle rail in this utility model;

[0054] Figure 22 for Figure 5 Section I in the middle;

[0055] Figure 23 for Figure 6 Section II in the middle;

[0056] In the diagram: 1-Pulse jet, 2-Fixed-point moving device, 3-Sliding switch, 4-Guide pipe, 5-Spring I, 6-Limit switch, 7-Main drive air pipe, 8-Branch drive air pipe, 9-Pulse valve, 10-Bag, 11-Ash discharge valve, 12-Main blow air pipe, 13-Branch blow air pipe, 14-Bag orifice plate, 15-Guide groove, 16-Roller, 17-Connecting rod, 18-Fixed-point shifter, 19-Left driver, 20-Right driver, 21-Pulse jet pipe, 22-Reverse thrust pipe, 23-Right reverse thrust pipe distance limit stop, 24-Right blow jet pipe distance limit stop, 25-Spring II, 26- Locking latch rail, 27-Drive baffle hole, 28-Limiting window hole, 29-Symbolt tube, 30-Slide cylinder, 31-Directional plate, 32-Connecting plate, 33-Lifter, 34-Guide pulley, 35-Spring III, 36-Guide plate, 37-Displacement hole, 38-Limiting post B, 39-Limiting post A, 40-Rotating shaft, 41-Bearing, 42-Bracket I, 43-Pneumatic jet pipe, 44-Pneumatic nozzle, 45-Bracket II, 46-Cast wheel, 47-Cymbolt slider, 48-Left release device, 49-Right release device, 50-Pressure device, 51-Drive pipe, 52-Left jet pipe, 53-Right jet pipe 54-Blowpipe, 55-Round hole baffle, 56-Locking buckle, 57-Spring IV, 58-Main rod, 59-Spring V, 60-Left cross brace, 61-Right cross brace, 62-Left diagonal brace, 63-Right diagonal brace, 64-Sliding hole, 65-Coupling A, 66-Coupling B, 67-Coupling C, 68-Coupling D, 69-Slide groove, 70-Pressure rod, 71-Left position stop lever, 72-Left crossbeam rod, 73-Left vertical support rod, 74-Right position stop lever, 75-Right crossbeam rod, 76-Right vertical support rod, 77-Pressure circular plate, 78-Limit baffle, 79-Wedge plate, 80-Drive lifting mechanism Slide rail, 81-Left drive stop, 82-Right drive stop, 83-Fixed bracket, 84-Baffle, 85-Spring VI, 86-Guide shaft A, 87-Guide shaft B, 88-Guide hole, 89-Drive shaft, 90-Left lifting plate, 91-Left column, 92-Left reverse thrust tube, 93-Left reverse thrust tube distance stop, 94-Right lifting plate, 95-Right column, 96-Right reverse thrust tube, 97-Protruding stop, 98-Left rail, 99-Right rail, 100-Slide rail, 101-Slide rail square tube, 102-Vertical rotating wheel, 103-Horizontal rotating wheel, 104-Cylindrical slider, 105-Cylindrical slider. Detailed Implementation

[0057] The present invention will be further described below with reference to the embodiments and accompanying drawings, but is not limited thereto.

[0058] Example 1:

[0059] like Figure 1-3As shown, this embodiment provides a pulse-jet cleaning system for baghouse dust collection, including an upper chamber, a middle chamber, and a dust hopper connected sequentially from top to bottom. The upper chamber is equipped with a fixed-point moving device 2, a pulse-jet cleaner 1, a driving air pipeline, and a pulse-jet air pipeline. The middle chamber is equipped with multiple dust collection bags 10. High-pressure airflow drives the fixed-point moving device 2 to move intermittently to a fixed point through the driving air pipeline. The pulse-jet cleaner 1 is mounted on the fixed-point moving device 2 and is carried by the fixed-point moving device 2 to move intermittently to a fixed point, thereby connecting with the pulse-jet air pipeline to realize the pulse-jet cleaning operation on the baghouse.

[0060] The fixed-point moving device 2 includes a limit switch 6, a guide tube 4, a sliding direction switch 3, a left driver 19, a fixed-point shifter 18, and a right driver 20. The limit switches are set on the left and right sides of the top wall of the upper box. The two ends of the guide tube 4 are fixedly connected to the inner wall of the upper box. The sliding direction switch 3 is set inside the guide tube 4 and its two ends are elastically connected to the inner wall of the upper box. The direction switching of the sliding direction switch 3 is realized through the limit switches on the left and right sides.

[0061] The top of the blowpipe 21 is connected to the air receiving pipe 54, and the bottom of the blowpipe is connected to the drive pipe 51, forming a cross-shaped four-way pipe.

[0062] The left actuator 19, the fixed-point shifter 18, and the right actuator 20 are all mounted on the guide tube 4. The top of the left actuator 19 and the right actuator 20 are each connected to a reverse thrust tube 22. The top of the fixed-point shifter 18 is connected to a blow pipe 21. Both ends of the blow pipe 21 are placed inside the reverse thrust tube 22. A spring II 25 is mounted on the reverse thrust tube 22. One end of the spring II 25 is connected to the reverse thrust tube 22, and the other end is connected to the blow pipe 21. The high-pressure airflow enters the blow pipe 21 through the air receiving pipe 54, pushing the left actuator 19 or the right actuator 20 to move forward. The left actuator 19 or the right actuator 20 drives the fixed-point shifter 18 to move forward intermittently in a fixed position.

[0063] Specifically, the upper box, middle box and ash hopper are manufactured as a single piece. The bottom of the ash hopper is equipped with an ash discharge valve 11. When the ash hopper is full of dust, the ash discharge valve can be opened to release the dust and transport it out.

[0064] The driving air pipeline provides driving force and mainly includes a main driving air pipe 7, driving air branch pipes 8, and a pulse valve 9. The main driving air pipe 7 connects to multiple parallel driving air branch pipes 8. The pulse valve 9 is installed on the driving air branch pipes 8 and is controlled by a PLC. When the driving air branch pipe 8 is connected to the receiving air pipe 54, the pulse valve 9 opens, and the high-pressure airflow is injected into the blowpipe through the receiving air pipe, driving the left or right actuator to move the fixed-point shifter to the next position.

[0065] The blowing air pipeline is used to blow the dust collector bag 10 into the dust hopper. It mainly includes the blowing air main pipe 12, the blowing air branch pipes 13 and the pulse valve. The blowing air main pipe 12 is connected to multiple blowing air branch pipes 13 arranged in parallel. The pulse valve is installed on the blowing air branch pipes 13 and is controlled by a PLC.

[0066] The blower 1 includes a blow tube 43 and blow nozzles 44. Multiple blow nozzles 44 are connected to the blow tube 43 in parallel. The blow tube 43 is connected to the bottom of the fixed-point shifter 18 via a connecting rod 17. The blower 1 is carried intermittently by the fixed-point shifter 18. When the fixed-point shifter 18 stops above each row of fabric bags 10, the blow nozzles 44 perform the blowing operation on the fabric bags under the control of the PLC.

[0067] The limit switch includes a bracket I 42, a guide plate 36, a limit post A 39, and a limit post B 38. The top of the bracket I 42 is connected to the top wall of the upper housing. One end of the limit post A 39 and the limit post B 38 are fixedly connected to the bracket I 42, and the other end passes through the displacement hole 37 opened on the guide plate 36. A bearing 41 is connected to the bottom end of the guide plate 36.

[0068] The sliding switch 3 includes a left sliding cylinder 30, a connecting plate 32, and a right sliding cylinder connected in sequence. A directional plate 31 is provided at the top of both the left and right sliding cylinders. Guide pulleys 34 are symmetrically arranged on the left and right side walls of the left and right sliding cylinders. Multiple sets of symmetrically arranged lifters 33 are provided on one side of the connecting plate. Each lifter 33 is a wedge-shaped plate 79, on which a perforated, sloping lifting track 80 is formed.

[0069] The guide tube 4 is provided with a limiting window hole 28, a driving baffle hole 27 and a locking buckle rail 26. The locking buckle rail 26 is mounted on the upper surface of the outer wall of the guide tube 4. The driving baffle hole 27 is symmetrically arranged on the left and right sides of the locking buckle rail 26. There are two limiting windows 28, one on the left and one on the right at both ends of the guide tube 4.

[0070] Two parallel slide rails 100 are symmetrically arranged on the left and right inner walls of the guide tube 4, and the guide pulley 34 is placed in the slide rail 100.

[0071] The guide pulley 34 includes a horizontal rotating wheel 103 and a vertical rotating wheel 102 connected to each other. It can ensure the stability of the guide pulley in the slide and reduce the sliding friction of the guide pulley.

[0072] The inner cavity of the guide tube 4 is provided with multiple equally spaced drive stops. Each drive stop includes two drive stops arranged symmetrically on the left and right, namely the left drive stop 81 and the right drive stop 82. The drive stops include a fixed frame 83, a baffle 84, a spring VI 85, a guide shaft A 86, a guide shaft B 87, and a drive lifting shaft 89. The fixed frame 83 is fixed to the inner wall of the guide tube 4. One end of the guide shaft A 86 and the guide shaft B 87 are connected to the fixed frame 83, and the other end is placed in the guide hole 88 opened in the baffle 84. The guide shaft B 87 is connected to the baffle 84 through the spring VI 85. One end of the drive lifting shaft 89 is fixed to the bottom of the baffle 84, and the other end is placed in the drive lifting slide 80 of the lifter. The top of the baffle 84 is located at the drive baffle hole 27. During the direction switching process, the lifter 33 drives the left and right baffles of each pair of drive positions to extend out of the drive window hole in turn. If the top of the left baffle extends out of the drive window hole, the right baffle falls down and its top does not exceed the drive window hole; if the top of the right baffle extends out of the drive window hole, the left baffle falls down and its top does not exceed the drive window hole, thereby achieving the directional limiting function of the left / right drive.

[0073] like Figure 19 , 20 As shown, the left actuator 19 and the right actuator 20 have the same structure, including a cylindrical slider 104 / 105, a column 91 / 95, and a lifting plate 90 / 94. The cylindrical slider is sleeved on the outer wall of the guide tube 4, and the top of the cylindrical slider is connected to the reverse thrust tube 22 through the column. The lifting plate is horizontally connected to the column. When the right actuator 20 reaches the rightmost end of the guide tube 4 or the left actuator 19 reaches the leftmost end of the guide tube 4, the lifting plate impacts the bottom of the near-end limit switch, lifting the limit switch upward, thereby releasing the fixed restriction of the limit switch on the sliding switch. Then, under the combined action of the springs at both ends, the sliding switch slides in the opposite direction, realizing the fixed restriction of the other side limit switch on the sliding switch.

[0074] A jet pipe distance limiter is provided on the outer wall of the end of the jet pipe 21, and a thrust pipe distance limiter is provided on the inner wall of the end of the thrust pipe. The jet pipe distance limiter can contact the thrust pipe distance limiter. The two ends of the jet pipe are located inside the left and right thrust pipes respectively. During the relative movement of the jet pipe and the thrust pipe in opposite directions, after the jet pipe distance limiter and the thrust pipe distance limiter approach and contact each other, they can achieve mutual dragging and traction during the movement.

[0075] The fixed-point shifter 18 includes a cylindrical slider 47, which is sleeved on the outer wall of the guide tube 4, and the top of the cylindrical slider 47 is connected to the bottom of the drive tube 51.

[0076] A pressure device 50 is installed at the bottom of the drive tube 51. A left release device 48 and a right release device 49 are respectively installed on both sides of the drive tube 51, positioned on both sides of the fixed-point shifter 18. Airflow enters the drive tube through the receiving pipe, driving the pressure device to move downward. The downward movement of the pressure device causes the outer ends of the left and right release devices to tilt upward, thereby releasing the fixation of the fixed-point shifter.

[0077] The left release device 48 includes a left position stop 71, a left crossbeam 72, and a left vertical support 73, which are hinged in sequence. The bottom of the left vertical support 73 is fixedly connected to the cylindrical slider 47 of the fixed-point shifter. Both the left position stop 71 and the left crossbeam 72 are provided with a single-sided protrusion 97. The single-sided protrusion ensures that the left position stop and the left crossbeam can only rotate in one direction during rotation.

[0078] The right release device 49 and the left release device 48 have the same structure, which includes a right position stop 74, a right crossbeam 75 and a right vertical support 76 that are hinged in sequence. The bottom of the right vertical support 76 is fixedly connected to the cylindrical slider 47 of the fixed point shifter. Both the right position stop 74 and the right crossbeam 75 are provided with a single-sided protrusion 97.

[0079] The pressure device 50 includes a main rod 58, from top to bottom arranged a pressure circular plate 77, a pressure rod 70, a limiting baffle 78, and a locking buckle 56; a horizontal circular hole baffle 55 is provided on the inner wall of the drive tube, and symmetrical sliding grooves 69 are provided on the side wall. The pressure rod 70 extends out of the sliding groove 69 and contacts the inner ends of the left crossbeam rod 72 and the right crossbeam rod 75. The main rod 58 passes through the circular hole baffle 55 and the limiting baffle 78 is located below the circular hole baffle 55. A spring IV 57 is sleeved on the main rod 58 and the spring IV 57 is located between the pressure rod 70 and the circular hole baffle 55.

[0080] The locking buckle 56 includes a left diagonal brace 62, a right diagonal brace 63, a left horizontal brace 60, and a right horizontal brace 61. The bottom ends of the left diagonal brace 62 and the right diagonal brace 63 are hinged to the main rod 58 via a connecting shaft A65. The top end of the left diagonal brace 62 is hinged to one end of the left horizontal brace 60 via a connecting shaft B66. The top end of the right diagonal brace 63 is hinged to one end of the right horizontal brace 61 via a connecting shaft C67. The other ends of the left horizontal brace 60 and the other ends of the right horizontal brace 61 are hinged to each other via a connecting shaft D68. The connecting shaft D68 is placed in a sliding hole 64 on the main rod 58 and is connected to the main rod 58 via a spring V59.

[0081] The basic principle of this embodiment is to use a high-pressure air source to provide driving force, replacing the traditional electric drive. The left or right driver carries the stationary shifter intermittently forward to a fixed point. A sliding switch is used to switch the direction of travel of the stationary shifter during its round trip, ultimately achieving reciprocating intermittent stationary forward movement. At each stationary position where the stationary shifter stops, a blower performs a blowing operation on the corresponding row of fabric bags below it.

[0082] Example 2:

[0083] A pulse-jet cleaning system for baghouse dust collection, with the structure described in Example 1, differs in that: it provides a high-pressure air source for the entire pulse-jet cleaning system, which can be connected to an existing air source pipeline at the work site or to a separate air tank storing the high-pressure air source.

[0084] Example 3:

[0085] A jet-blowing system for baghouse dust collection, with the structure described in Example 1, differs in that: a bag perforation plate 14 is also provided inside the middle chamber. The bag perforation plate 14 is welded to the inner wall of the middle chamber and is mainly used to connect the dust collector bags 10 below. The bag perforation plate has neatly arranged openings, and the top opening of the bag is fitted onto the openings. The bag perforation plate 14 allows the bags to be arranged in multiple rows and columns, facilitating the alignment of the jet nozzles 44 with the openings.

[0086] C-shaped brackets II 45 are provided at both ends of the blow tube 43, and casters 46 are provided at the bottom of the brackets II 45. The casters 46 are placed in the guide grooves 15 on the left and right sides of the bag perforated plate 14. During the intermittent forward movement of the fixed-point shifter 18 carrying the blower 1, the casters 46 slide in the guide grooves 15, which can increase the stability during the forward movement.

[0087] Example 4:

[0088] A method for operating a pulse-jet cleaning system in a baghouse dust collection process, utilizing the pulse-jet cleaning system scheme described in Example 1, 2, or 3, is as follows:

[0089] 1) When the fixed-point shifter 18 is located above the leftmost column of dust collector bags 10, the moving direction of the fixed-point shifter 18 is to the right, the nozzle 44 is aligned with the leftmost column of bags 10, and the blowing pipe 43 is connected to the leftmost blowing air branch pipe; the PLC controls the pulse valve on the leftmost blowing air branch pipe 13 to open, and the high-pressure airflow enters the nozzle 44 through the blowing pipe 43 to blow the leftmost column of bags 10.

[0090] 2) After the bag blowing operation of the leftmost column is completed, the pulse valve 9 on the drive air branch pipe 8 is opened by the PLC control. At this time, the leftmost drive air branch pipe 8 is connected to the receiving air pipe 54. After the high-pressure pulse airflow enters the drive pipe 51 from the receiving air pipe 54, the pressure device 50 moves downward under the push of the high-pressure airflow. The outer ends of the left release device 48 and the right release device 49 simultaneously tilt upward. The fixed-point locking state of the fixed-point shifter 18 is released. The locking buckle 56 passes through the locking buckle clamp rail 26. The left diagonal brace 62 and the right diagonal brace 63 of the locking buckle 56 spring open. The locking buckle 56 is restricted to slide forward under the locking buckle clamp rail 26.

[0091] 3) At the same time, the high-pressure airflow enters the left jet pipe 52 and the right jet pipe 53. Since the left driver 19 is limited by the left drive gear 81 at this time and remains stationary, the right driver 20 moves to the right and passes the left drive gear at the next position.

[0092] 4) The right drive 20 continues to move to the right. The distance stops of the left jet pipe 52 and the right jet pipe 53 contact the distance stops of their respective left reverse thrust pipe 92 and right reverse thrust pipe 96 and generate a pulling action. Then, the left drive 19, the fixed point shifter 18 and the right drive 20 form a whole and slide to the right synchronously. When the kinetic energy of the right drive 20 decreases to zero, the right drive 20 stops moving forward. However, under the pull of the spring II 25, the right drive 20 begins to slide back and is eventually stopped in front of the left drive gear at that point. After that, the right drive 20 remains in place and continues to be pulled by the spring pull. The fixed point shifter 18 and the left drive 19 continue to move forward.

[0093] 5) As the fixed-point shifter 18 carries the blower 1 to the right, the locking buckle 56 disengages from the locking buckle rail 26, and the pressure device 50 returns to its original position under the restoring force of the spring V 59. The left release device 48 and the right release device 49 return to the horizontal state. At this time, the fixed-point shifter 18 slides to the next set of drive gears, and the left release device 48 is stopped by the left drive gear 81. The fixed-point shifter 18 stops at this point, and the blower nozzle 44 is facing the next row of cloth bags.

[0094] 6) The fixed-point shifter 18 stops moving forward and remains stationary at this position; the left drive 19 continues to move forward to the right. After it passes its next corresponding left drive gear, it is blocked on its right side by the left drive gear. Finally, after the spring force is exhausted and the kinetic energy is reduced to zero, it stops at this point.

[0095] 7) After the fixed-point shifter 18 stops here, at the specified time node, the PLC controls the pulse valve on the blowing air branch pipe 13 to open again, and the high-pressure airflow enters the blowing nozzle 44 through the blowing pipe 43 to blow the bags in this row.

[0096] 8) Steps 1)-7) consist of an intermittent forward movement of the fixed-point shifter and an intermittent blowing operation of the blower. The fixed-point shifter intermittently repeats the forward movement of steps 1)-7) until the right drive reaches the rightmost end of the guide tube.

[0097] 9) When the right driver 20 reaches the rightmost end of the guide tube, the lifting plate 94 of the right driver 20 lifts the right limit switch. Under the action of the spring force of the springs I5 at both ends, the sliding switch 3 slides to the left. The left directional plate 31 passes the left limit switch, and the sliding switch 3 is locked by the left limit switch.

[0098] 10) During the above reverse switching process, the lifter 33 lifts all the right drive gears 82 upwards and lowers all the left drive gears 81 simultaneously.

[0099] 11) At this point, the sliding switch 3 has completed the reverse switching of the travel direction of the fixed point shifter 18, the left driver 19, and the right driver 20. The fixed point shifter, the left driver, and the right driver begin to perform the movement action from "right" to "left". After the fixed point shifter intermittently repeats multiple forward movements and the blower completes the intermittent blowing operation, the left driver 19 finally reaches the leftmost end of the guide tube 4.

[0100] 12) The lifting plate 90 of the left driver 19 lifts the left limit switch, and the sliding switch 3 begins to slide to the right under the action of the spring force of the springs I5 at both ends. The right guide plate 94 passes the right limit switch, and the position of the sliding switch 3 is locked by the right limit switch.

[0101] 13) Repeat steps 1)-12), the fixed-point shifter 18 and the left driver 19 and right driver 20 continuously perform intermittent sliding movements to the left or right in a synchronous cycle, and correspondingly, the blower 1 performs intermittent blowing operations on the cloth bag 10 in a cycle.

[0102] The above description is only a specific embodiment of this utility model. The protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A pulse-jet cleaning system for baghouse dust collection, characterized in that, It includes an upper chamber, a middle chamber, and a dust hopper connected from top to bottom; the upper chamber is equipped with a fixed-point moving device, a blower, a driving air pipeline, and a blowing air pipeline; the middle chamber is equipped with multiple dust collector bags; high-pressure airflow drives the fixed-point moving device to move intermittently to a fixed point through the driving air pipeline; the blower is mounted on the fixed-point moving device, which carries the blower to move intermittently to a fixed point, and connects temporarily with the blowing air pipeline in turn to realize the blowing operation on the dust collector bags; The fixed-point moving device includes limit switches, guide tubes, sliding direction switchers, left driver, fixed-point shifter, and right driver; the limit switches are set on the left and right sides of the top wall of the upper housing, the two ends of the guide tubes are fixedly connected to the inner side wall of the upper housing, the sliding direction switchers are set inside the guide tubes and their two ends are elastically connected to the inner side wall of the upper housing respectively, and the direction of the sliding direction switchers can be switched by the limit switches on the left and right sides; The left drive, the fixed-point shifter, and the right drive are all mounted on the guide tube. The top of the left drive and the right drive are each connected to a thrust reverser. The top of the fixed-point shifter is connected to a jet pipe. Both ends of the jet pipe are placed inside the thrust reverser. A spring is fitted on the thrust reverser. One end of the spring is connected to the thrust reverser and the other end is connected to the jet pipe. High-pressure airflow enters the jet pipe and pushes the left drive or the right drive forward. The left drive or the right drive drives the fixed-point shifter to move forward intermittently in a fixed position.

2. The pulse-jet cleaning system for a baghouse dust collection process as described in claim 1, characterized in that, The driving air pipeline includes a driving air main pipe, driving air branch pipes, and a pulse valve. The driving air main pipe is connected to multiple driving air branch pipes arranged in parallel. The pulse valve is installed on the driving air branch pipe and is controlled by a PLC.

3. The pulse-jet cleaning system for a baghouse dust collection process as described in claim 1, characterized in that, The blowing air pipeline includes a main blowing air pipe, blowing air branch pipes, and a pulse valve. The main blowing air pipe is connected to multiple blowing air branch pipes arranged in parallel. The pulse valve is installed on the blowing air branch pipe and is controlled by a PLC.

4. The pulse-jet cleaning system for a baghouse dust collection process as described in claim 1, characterized in that, The blower includes a blow tube and blow nozzles. Multiple blow nozzles are connected to the blow tube in parallel. The blow tube is fixedly connected to the bottom of the positioning device.

5. The pulse-jet cleaning system for a baghouse dust collection process as described in claim 1, characterized in that, The limit switch includes a bracket I, a guide plate, a limit post A, and a limit post B; the top of the bracket I is connected to the top wall of the upper housing, one end of the limit post A and the limit post B are fixedly connected to the bracket I, and the other end passes through the displacement hole opened on the guide plate, and a bearing is connected to the bottom end of the guide plate.

6. The pulse-jet cleaning system for a baghouse dust collection process as described in claim 1, characterized in that, The sliding switch includes a left sliding cylinder, a connecting plate, and a right sliding cylinder connected in sequence; the top of the left and right sliding cylinders are provided with directional plates, and guide pulleys are symmetrically arranged on both sides of the left and right sliding cylinders; multiple sets of symmetrically arranged lifters are provided on one side of the connecting plate.

7. The pulse-jet cleaning system for a bag filter dust collection process as described in claim 6, characterized in that, The lifter is a wedge-shaped plate with a ramp-type lifting slide.

8. The pulse-jet cleaning system for a baghouse dust collection process as described in claim 7, characterized in that, The guide tube is provided with a limit window hole, a drive baffle hole and a locking buckle rail. The locking buckle rail is provided on the outer wall of the guide tube, and the drive baffle hole is symmetrically arranged on both sides of the locking buckle rail.

9. The pulse-jet cleaning system for a baghouse dust collection process as described in claim 8, characterized in that, The inner cavity of the guide tube is provided with multiple equally spaced drive stops. Each drive stop group includes two drive stops arranged symmetrically on the left and right. The drive stops include a fixed frame, a baffle, a spring, a guide shaft A, a guide shaft B, and a drive lifting shaft. The fixed frame is fixed to the inner wall of the guide tube. One end of the guide shaft A and the guide shaft B are connected to the fixed frame, and the other end is placed in the guide hole opened in the baffle. The guide shaft B is connected to the baffle through the spring. One end of the drive lifting shaft is fixed to the bottom of the baffle, and the other end is placed in the drive lifting slide of the lifter. The top of the baffle is located at the drive baffle hole.

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