Device for preventing foreign matters from entering pipeline

Abstract

The utility model relates to a device for preventing foreign matters from entering a pipeline, the pipeline comprises a branch smoke pipe and a main smoke pipe which are sequentially connected, one end of the branch smoke pipe far away from the main smoke pipe is connected with the inside of a hot box, and the main smoke pipe is connected with a fan; the device for preventing the foreign matter from entering the pipeline comprises a broken wire sensing device, a pneumatic partition plate, a pneumatic telescopic rod and a PLC. The pneumatic partition plate is fixedly connected with the telescopic end of the pneumatic telescopic rod. When the pneumatic telescopic rod is in the maximum range, the pneumatic partition plate separates the interior of the branch smoke pipe from the interior of the hot box. The broken filament sensing device is used for detecting whether tows are broken; the pneumatic telescopic rod and the broken wire sensing device are electrically connected with the PLC. When the broken filament sensing device detects that the filament bundle is broken, the broken filament sensing device transmits a signal to the PLC, and the PLC controls the pneumatic telescopic rod to extend. The device prevents batting generated by abnormal broken yarn from entering a suction system, so that the suction system is safe and reliable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to polyester fiber production equipment technical field relates to a pipeline prevents foreign matter into device. BACKGROUND

[0002] In the production process of polyester fiber, oil agent needs to be attached to the surface of the fiber to facilitate smooth production. Due to the high temperature of the hot roller (70-250℃) in the hot box, part of the oil agent will volatilize due to heat, generating a large amount of smoke. If these fumes are not promptly removed, they will affect the quality of the fiber, the atmospheric environment, and the health of the operators.

[0003] The current common treatment method is negative pressure suction: oil fume → filter screen (50-100 mesh) → branch smoke pipe → total smoke pipe → electrostatic oil removal device → fan.

[0004] Due to the production characteristics, a large amount of lint will be generated in the hot box during abnormal shutdown. Although the existing technology has a filter screen, part of the lint will still pass through the screen holes and enter the pipeline and be adsorbed in the pipeline. After a large amount of lint accumulates in the pipeline, if a spark is encountered, the lint in the pipeline will instantaneously explode, posing a major safety hazard. In addition, a large amount of lint will also be attached to the surface of the filter screen, which will affect the suction effect.

[0005] Patent CN219260301U discloses a waste gas suction device for spinning production, which sucks and processes the small aldehyde molecules generated during the spinning production of fibers to avoid air pollution caused by the dispersion of waste gas, but cannot prevent lint generated by abnormal yarn breakage from entering the suction system.

[0006] Therefore, it is of great significance to research a pipeline foreign matter prevention device to solve the above problems. INVENTION CONTENTS

[0007] The utility model aims at solving the problems in the prior art and provides a pipeline foreign matter prevention device.

[0008] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0009] A pipeline foreign matter prevention device, the pipeline includes a branch smoke pipe and a total smoke pipe connected in sequence, the end of the branch smoke pipe away from the total smoke pipe is connected with the inside of the hot box, and the total smoke pipe is connected with the fan; the pipeline foreign matter prevention device includes a broken yarn sensing device, a pneumatic baffle, a pneumatic telescopic rod and a PLC controller.

[0010] The pneumatic partition plate is fixedly connected with the telescopic end of the pneumatic telescopic rod, and the fixed end of the pneumatic telescopic rod is fixedly connected with the hot box; when the pneumatic telescopic rod is in the maximum range, the pneumatic partition plate separates the inside of the branch flue from the inside of the hot box to prevent lint from entering the branch flue; the broken filament sensing device is used for detecting whether the filament bundle is broken;

[0011] The pneumatic telescopic rod and the broken filament sensing device are electrically connected with the PLC controller respectively; when the broken filament sensing device detects that the filament bundle is broken, the broken filament sensing device sends a signal to the PLC controller, and the PLC controller controls the pneumatic telescopic rod to extend; when the broken filament sensing device senses again that the filament bundle passes, the broken filament sensing device sends a signal to the PLC controller, and the PLC controller controls the pneumatic telescopic rod to contract;

[0012] The broken filament sensing device is prior art, for example, model DS2677D (AMP); after the filament bundle is broken, no filament bundle passes the broken filament sensor, and the broken filament sensor judges that the filament is broken; after the filament bundle is broken, the hot roller is from running to stopping, and the lint is generated by the friction between the filament wound on the hot roller and the inner wall of the hot box; after the filament bundle passes the broken filament sensing device again, the broken filament sensor judges that the production is normal.

[0013] As a preferred technical solution:

[0014] The pipeline foreign matter prevention device as described above further comprises a lint detection device and a lint cleaning device;

[0015] The pneumatic partition plate is of a closed hollow structure, and a side of the pneumatic partition plate facing the inside of the hot box is provided with a plurality of lint capture holes; the lint capture holes are in communication with the inside of the hot box and the inside of the pneumatic partition plate; the aperture of the lint capture holes is 1-3 mm;

[0016] The lint detection device comprises a high-pressure gas conveying pipe, a gas flow sensor, a lint detection pipe and a gas compression station;

[0017] The length direction of the high-pressure gas conveying pipe is the same as the length direction of the pneumatic telescopic rod, the gas compression station is connected with one end of the high-pressure gas conveying pipe, and the gas compression station is used for conveying high-pressure gas flow into the high-pressure gas conveying pipe; one end of the lint detection pipe is fixed on the pneumatic partition plate and is in communication with the inside of the pneumatic partition plate; the other end of the lint detection pipe is fixed on the peripheral surface of the high-pressure gas conveying pipe and is in communication with the inside of the high-pressure gas conveying pipe; the gas flow sensor is arranged in the lint detection pipe, and the gas flow sensor is used for detecting whether the gas flow in the lint detection pipe changes when the gas compression station is in operation;

[0018] The PLC controller is electrically connected with the air pressure station, the airflow sensor and the lint cleaning device respectively; when the broken filament sensing device detects the broken filament, the broken filament sensing device sends a signal to the PLC controller, the PLC controller controls the air cylinder to extend and the air pressure station to start; when the broken filament sensing device senses the filament again, the broken filament sensing device sends a signal to the PLC controller, the PLC controller controls the air cylinder to retract and the air pressure station to stop; when the airflow flow in the lint detection tube changes, the airflow sensor sends a signal to the PLC controller, the PLC controller controls the lint cleaning device to clean the hole of the lint capturing hole on the side of the air baffle facing the hot box.

[0019] The total smoke pipe is connected with the fan, and when the fan is pumping, a certain airflow flow trajectory is formed in the hot box, so that the lint will still drift to the branch smoke pipe when the filament is broken, and thus the lint will be attached to the air baffle; when the high-pressure airflow is introduced into the high-pressure gas pipe, a negative pressure environment is formed, and since the high-pressure gas pipe is connected with the air baffle, a large amount of lint attached to the air baffle will be sucked to the hole of the lint capturing hole, so that the airflow flow in the lint detection tube changes; after the flow changes, the hole of the lint capturing hole is cleaned by the lint cleaning device.

[0020] The pipe foreign matter prevention device, the included angle between the lint detection tube and the high-pressure airflow movement direction in the high-pressure gas pipe is denoted as an included angle a, and 45°< included angle a < 90°.

[0021] The pipe foreign matter prevention device, a through hole I is arranged on the side of the hot box, and the end of the branch smoke pipe away from the total smoke pipe is connected with the inside of the hot box through the through hole I.

[0022] The pipe foreign matter prevention device, the lint cleaning device comprises a lifting mechanism and a cleaning roller brush.

[0023] The lifting mechanism comprises a lifting screw rod, a lifting motor and a lifting traction seat, and the lifting mechanism is a screw rod assembly, which is a prior art.

[0024] A through hole II is arranged on the upper surface of the hot box, and the through hole II is connected with the outside and the inside of the hot box; a blind hole is arranged on the bottom of the inside of the hot box.

[0025] The lifting screw rod is vertically arranged, one end of the lifting screw rod passes through the through hole II and the blind hole in sequence and is in clearance fit with the through hole II and the blind hole respectively, and the other end of the lifting screw rod is fixedly connected with the motor shaft of the lifting motor.

[0026] A threaded through hole is arranged on the lifting traction seat, the lifting traction seat is sleeved on the lifting screw rod through the threaded through hole and is in threaded fit with the lifting screw rod; the cleaning roller brush is fixedly connected with the lifting traction seat, so that the lifting mechanism drives the cleaning roller brush to move up and down.

[0027] When the pneumatic telescopic rod is at the maximum range, the initial position of the lifting traction seat on the lifting screw rod is above the pneumatic baffle;

[0028] The lifting motor is electrically connected with the PLC controller. When the airflow flow in the lint detection tube changes, the airflow sensor sends a signal to the PLC controller, and the PLC controller controls the lifting mechanism to move up and down to clean the lint capturing hole on the surface of the pneumatic baffle facing the hot box.

[0029] When the airflow flow in the lint detection tube changes, the airflow sensor sends a signal to the PLC controller, and the lifting mechanism moves up and down to clean the lint capturing hole on the surface of the pneumatic baffle facing the hot box.

[0030] The cleaning roller brush includes a fixed connection ring, a cleaning motor, a drive gear, a cleaning roller, a transmission gear ring, an adjusting inner cylinder, an adjusting motor, and an elastic wire hook.

[0031] The fixed connection ring is fixedly connected with the lifting traction seat, so that the lifting mechanism drives the cleaning roller brush to move up and down.

[0032] The adjusting motor is fixed in the interior of the fixed connection ring. The adjusting inner cylinder is horizontally placed, and the motor shaft of the adjusting motor is fixedly connected with the adjusting inner cylinder. The central axis of the adjusting inner cylinder coincides with the central axis of the fixed connection ring.

[0033] The cleaning roller is sleeved on the outside of the adjusting inner cylinder. The central axis of the cleaning roller coincides with the central axis of the adjusting inner cylinder. One end of the cleaning roller is rotationally connected with the fixed connection ring. The vertical plane in which the central axis of the cleaning roller is located is parallel to the pneumatic baffle.

[0034] The cleaning motor is fixed on the upper surface of the fixed connection ring. The motor shaft of the cleaning motor is fixedly connected with the drive gear. The transmission gear ring is arranged on the circumferential surface of the cleaning roller and is in meshing connection with the drive gear. When the cleaning motor is started, the motor shaft drives the drive gear to rotate, and the drive gear drives the cleaning roller to rotate through the meshing with the transmission gear ring.

[0035] A plurality of through holes III are distributed on the circumferential surface of the cleaning roller. The through holes III are used for connecting the interior of the cleaning roller with the exterior of the cleaning roller.

[0036] The elastic wire hook is a metal wire bent at an angle of 90-170°; one end of the elastic wire hook is fixedly connected with the peripheral surface of the adjusting inner cylinder through the through hole III; the number of the elastic wire hooks is the same as that of the through holes III, and each elastic wire hook corresponds to one through hole III;

[0037] The adjusting motor and the cleaning motor are electrically connected with the PLC controller; when the lifting mechanism moves up and down, the PLC controller controls the adjusting motor and the cleaning motor to rotate at the same angular velocity;

[0038] The free end of the elastic wire hook is denoted as c, and the minimum distance between c and the peripheral surface of the cleaning roller is denoted as d when the fixing ring is not fixedly connected with the lifting traction seat; the horizontal distance between the peripheral surface of the cleaning roller and the pneumatic partition plate is less than d, so that the elastic wire hook of the cleaning roller brush can hook the lint at the hole of the lint capturing hole.

[0039] The lint processing device further comprises a lint processing device;

[0040] The outer diameter of the fixing ring is greater than that of the transmission gear ring; the shell of the adjusting motor is inserted into the interior of the fixing ring and is in transition fit with the fixing ring; the cleaning motor is fixed on the upper surface of the fixing ring through the fixing seat;

[0041] The lint processing device comprises an upper shell, a lower shell, a suction device, a button I, a button II and a button III;

[0042] The upper shell is a semi-closed structure with an opening downward;

[0043] The upper shell is located in the heat box and is fixedly connected with the heat box; when the lifting traction seat is located at the initial position, the cleaning roller is located in the interior of the upper shell;

[0044] The heat box is provided with a closed port; the closed port is in communication with the outside and the interior of the heat box;

[0045] The lower shell is used for being inserted into the interior of the heat box from the closed port, and forms a sealed hollow structure with the fixing ring, the adjusting motor, the cleaning motor, the fixing seat and the upper shell; at this time, the cleaning roller is located in the sealed hollow structure;

[0046] The button I, the button II and the button III are electrically connected with the cleaning motor respectively; when the button I is pressed, the cleaning motor drives the adjusting inner cylinder to rotate in the positive direction so that the elastic wire hook extends out of the through hole III; when the button II is pressed, the cleaning motor stops rotating; when the button III is pressed, the cleaning motor drives the adjusting inner cylinder to rotate in the reverse direction so that the elastic wire hook is retracted into the through hole III;

[0047] The heat box is provided with a suction port; the suction port is in communication with the interior of the upper shell and the outside; the suction device is in communication with the interior of the upper shell through the suction port; the suction device is used for suctioning the interior of the upper shell.

[0048] After the production is recovered and stabilized, the lower shell is inserted into the interior of the hot box from the closed opening, and a sealed hollow structure is formed with the fixed connecting ring, the adjusting motor, the cleaning motor, the fixed seat and the upper shell; then the separate rotation of the cleaning motor is controlled, the lint left on the periphery of the cleaning roller by the elastic wire hook, and the lint is sucked out of the hot box through the suction device.

[0049] The pipeline foreign matter entering device has a filter screen in the branch flue pipe, and the filter screen is used for filtering lint.

[0050] Beneficial effects:

[0051] The device prevents the lint generated by abnormal yarn breakage from entering the suction system, so that the suction system is safe and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 It is an internal view of the pipeline foreign matter entering device from one angle.

[0053] Figure 2 It is an internal view of the pipeline foreign matter entering device from one angle.

[0054] Figure 3 It is a schematic view of the lint processing device and the cleaning roller brush structure.

[0055] Figure 4 It is a partial sectional view of the lint cleaning device.

[0056] Figure 5 It is a partial sectional view of the lint cleaning device.

[0057] Figure 6 It is a schematic view of the connection relationship between the pneumatic partition plate and the lint detection device.

[0058] 1-hot box, 101-branch flue pipe, 102-filter screen, 103-main flue pipe, 104-discharge valve, 2-pneumatic partition plate, 201-pneumatic telescopic rod, 202-high-pressure gas conveying pipe, 205-lint detection pipe, 207-air flow sensor, 208-lint capturing hole, 3-lint processing device, 301-suction port, 302-upper shell, 303-lower shell, 304-closed opening, 401-lifting screw rod, 402-lifting motor, 5-cleaning roller brush, 501-lifting traction seat, 503-fixed connecting ring, 504-cleaning motor, 505-driving gear, 6-cleaning roller, 601-through hole III, 602-driving tooth ring, 7-adjusting inner cylinder, 701-elastic wire hook, 702-adjusting motor. DETAILED DESCRIPTION

[0059] The utility model is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the utility model and not to limit the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0060] A pipeline foreign matter entering prevention device, as shown in Figure 1 The pipeline comprises branch smoke pipes 101 and a total smoke pipe 103 connected in sequence, and the branch smoke pipe 101 is provided with a filter screen 102; a through hole I is arranged on the side surface of the heat box 1, and the end of the branch smoke pipe 101 away from the total smoke pipe 103 is connected with the inside of the heat box 1 through the through hole I, and the total smoke pipe 103 is connected with a fan; the total smoke pipe 103 is provided with a discharge valve 104 for discharging condensate oil generated due to temperature change;

[0061] As shown in Figure 2 The pipeline foreign matter entering prevention device comprises a broken filament sensing device, a pneumatic baffle 2, a pneumatic telescopic rod 201, a PLC controller, a lint detecting device, a lint cleaning device and a lint processing device;

[0062] The pneumatic baffle 2 is fixedly connected with the telescopic end of the pneumatic telescopic rod 201, and the fixed end of the pneumatic telescopic rod 201 is fixedly connected with the heat box 1; when the pneumatic telescopic rod 201 is at the maximum range, the pneumatic baffle 2 separates the inside of the branch smoke pipe 101 and the inside of the heat box 1 to prevent lint from entering the branch smoke pipe 101; the broken filament sensing device is used to detect whether the filament bundle is broken;

[0063] As shown in Figure 6 The pneumatic baffle 2 is a closed hollow structure, and the side of the pneumatic baffle 2 facing the inside of the heat box 1 is provided with a plurality of lint capturing holes 208; the lint capturing holes 208 are communicated with the inside of the heat box 1 and the inside of the pneumatic baffle 2; the aperture of the lint capturing holes 208 is 1-3 mm;

[0064] As shown in Figure 6 The lint detecting device comprises a high-pressure gas conveying pipe 202, a gas flow sensor 207, a lint detecting pipe 205 and a gas compression station;

[0065] The length direction of the high-pressure gas conveying pipe 202 is the same as the length direction of the pneumatic telescopic rod 201, a compressor station is connected with one end of the high-pressure gas conveying pipe 202, and the compressor station is used for conveying high-pressure gas flow into the high-pressure gas conveying pipe 202; one end of the lint detection pipe 205 is fixed on the pneumatic baffle 2 and communicates with the inside of the pneumatic baffle 2; the other end of the lint detection pipe 205 is fixed on the peripheral surface of the high-pressure gas conveying pipe 202 and communicates with the inside of the high-pressure gas conveying pipe 202; the airflow sensor 207 is arranged in the lint detection pipe 205, and the airflow sensor 207 is used for detecting whether the airflow flow in the lint detection pipe 205 changes when the compressor station is in operation;

[0066] The included angle between the lint detection pipe 205 and the high-pressure gas flow movement direction in the high-pressure gas conveying pipe 202 is denoted as an included angle a, and 45° < the included angle a < 90°;

[0067] As shown in Figure 2 , the lint cleaning device comprises a lifting mechanism and a cleaning roller brush 5;

[0068] The lifting mechanism comprises a lifting screw rod 401, a lifting motor 402 and a lifting traction seat 501;

[0069] The upper surface of the heat box 1 is provided with a through hole II, and the through hole II communicates the outside and the inside of the heat box 1; the bottom of the inside of the heat box 1 is provided with a blind hole;

[0070] The lifting screw rod 401 is vertically placed, one end of the lifting screw rod 401 passes through the through hole II and the blind hole in sequence and is in clearance fit with the through hole II and the blind hole respectively, and the other end of the lifting screw rod 401 is fixedly connected with the motor shaft of the lifting motor 402;

[0071] The lifting traction seat 501 is provided with a threaded through hole, the lifting traction seat 501 is sleeved on the lifting screw rod 401 through the threaded through hole and is in threaded fit with the lifting screw rod 401;

[0072] When the pneumatic telescopic rod 201 is in the maximum range, the initial position of the lifting traction seat 501 on the lifting screw rod 401 is above the pneumatic baffle 2;

[0073] As shown in Figure 4 , the cleaning roller brush 5 comprises a fixed connection ring 503, a cleaning motor 504, a driving gear 505, a cleaning roller 6, a transmission gear ring 602, an adjusting inner cylinder 7, an adjusting motor 702 and an elastic wire hook 701;

[0074] The fixed connection ring 503 is fixedly connected with the lifting traction seat 501, so that the lifting mechanism drives the cleaning roller brush 5 to move up and down;

[0075] The shell of the adjusting motor 702 is inserted into the inside of the fixed connecting ring 503 and is in transition fit with the fixed connecting ring 503; the adjusting inner cylinder 7 is horizontally placed, and the motor shaft of the adjusting motor 702 is fixedly connected with the adjusting inner cylinder 7; the central axis of the adjusting inner cylinder 7 coincides with the central axis of the fixed connecting ring 503;

[0076] The cleaning roller 6 is sleeved on the outside of the adjusting inner cylinder 7; the central axis of the cleaning roller 6 coincides with the central axis of the adjusting inner cylinder 7; one end of the cleaning roller 6 is rotationally connected with the fixed connecting ring 503; the vertical plane in which the central axis of the cleaning roller 6 is located is parallel to the pneumatic partition plate 2;

[0077] The cleaning motor 504 is fixed on the upper surface of the fixed connecting ring 503 through the fixing seat; the motor shaft of the cleaning motor 504 is fixedly connected with the driving gear 505; the peripheral surface of the cleaning roller 6 is provided with a transmission gear ring 602, and the transmission gear ring 602 is in mesh with the driving gear 505; the outer diameter of the fixed connecting ring 503 is greater than the outer diameter of the transmission gear ring 602;

[0078] As shown in Figure 5 , a plurality of through holes III 601 are distributed on the peripheral surface of the cleaning roller 6; the through holes III 601 are used for communicating the inside of the cleaning roller 6 and the outside of the cleaning roller 6;

[0079] The elastic wire hook 701 is a metal wire bent at an angle of 90-170°; one end of the elastic wire hook 701 passes through the through hole III and is fixedly connected with the peripheral surface of the adjusting inner cylinder 7; the number of the elastic wire hooks 701 is the same as the number of the through holes III, and each of the elastic wire hooks 701 corresponds to one of the through holes III;

[0080] The adjusting motor 702 and the cleaning motor 504 are electrically connected with the PLC controller; when the lifting traction seat 501 of the lifting mechanism moves up and down, the PLC controller controls the adjusting motor 702 and the cleaning motor 504 to rotate, and the angular velocities of the two are the same;

[0081] The free end of the elastic wire hook 701 is denoted as c, the minimum distance between c and the peripheral surface of the cleaning roller 6 is d when the fixed connecting ring 503 is not fixedly connected with the lifting traction seat 501; the horizontal distance between the peripheral surface of the cleaning roller 6 and the pneumatic partition plate 2 is less than d;

[0082] As shown in Figure 3 , the lint processing device comprises an upper shell 302, a lower shell 303, a suction device, a button I, a button II and a button III;

[0083] The upper shell 302 is a semi-closed structure with an opening downward;

[0084] The upper shell 302 is located in the heat box 1 and is fixedly connected with the heat box 1; when the lifting traction seat 501 is located at the initial position, the cleaning roller 6 is located in the inside of the upper shell 302;

[0085] The heat box 1 is provided with a closed port 304; the closed port communicates the outside and the inside of the heat box 1;

[0086] The lower shell 303 is used to insert into the inside of the heat box 1 from the closed port, and forms a sealed hollow structure with the fixed connection ring 503, the adjusting motor 702, the cleaning motor 504, the fixed seat and the upper shell 302, at this time the cleaning roller 6 is in the sealed hollow structure;

[0087] The button I, the button II and the button III are respectively electrically connected with the cleaning motor 504; when the button I is pressed, the cleaning motor 504 drives the adjusting inner cylinder 7 to rotate forward so that the elastic wire hook 701 extends out of the through hole III 601; when the button II is pressed, the cleaning motor 504 stops rotating; when the button III is pressed, the cleaning motor 504 drives the adjusting inner cylinder 7 to rotate reversely so that the elastic wire hook 701 retracts into the through hole III 601;

[0088] The heat box 1 is provided with a suction port 301, the suction port communicates the inside of the upper shell 302 and the outside; the suction device communicates with the inside of the upper shell 302 through the suction port; the suction device is used to suck the inside of the upper shell 302;

[0089] The PLC controller is electrically connected with the pneumatic telescopic rod 201, the broken wire sensing device, the air pressure station, the air flow sensor 207 and the lifting motor 402 respectively; when the broken wire sensing device detects the broken wire, the broken wire sensing device sends a signal to the PLC controller, and the PLC controller controls the pneumatic telescopic rod 201 to extend and the air pressure station to start; when the broken wire sensing device senses the wire again, the broken wire sensing device sends a signal to the PLC controller, and the PLC controller controls the pneumatic telescopic rod 201 to retract and the air pressure station to close;

[0090] When the air flow of the lint detection pipe 205 changes, the air flow sensor 207 sends a signal to the PLC controller, and the PLC controller controls the lifting mechanism 402 to move up and down to make the cleaning roller brush 5 clean the hole of the lint capturing hole 208 on the side of the pneumatic baffle 2 facing the inside of the heat box 1; when the hole of the lint capturing hole 208 is cleaned, the air flow of the lint detection pipe 205 no longer changes, the air flow sensor 207 sends a signal to the PLC controller, and the PLC controller controls the lifting mechanism to move the lifting traction seat 501 upward, so that the lifting traction seat 501 returns to the initial position.

[0091] Specific use process: when the broken filament sensing device detects the broken filament, the broken filament sensing device sends a signal to the PLC controller, and the PLC controller controls the extension of the pneumatic telescopic rod 201 and the start of the air compression station; under the action of the pneumatic telescopic rod 201, the pneumatic baffle 2 separates the inside of the branch flue 101 and the inside of the hot box 1 to prevent lint from entering the branch flue 101; wherein, during normal production, the air flow formed in the hot box will form a certain airflow flow trajectory, so that the lint will still float towards the branch flue 101 when the head is broken, so the lint will adhere to the pneumatic baffle 2; under the action of the air compression station, high-pressure airflow is introduced into the high-pressure gas conveying pipe 202, which will form a negative pressure environment, and since the high-pressure gas conveying pipe 202 is in communication with the pneumatic baffle 2, a large amount of lint adhering to the pneumatic baffle 2 will be sucked to the hole of the lint capturing hole 208, causing the airflow flow in the lint detection pipe 205 to change;

[0092] When the airflow flow in the lint detection pipe 205 changes, the airflow sensor 207 sends a signal to the PLC controller, the PLC controller controls the up-and-down movement of the lifting mechanism's lifting seat 501 and controls the rotation of the adjusting motor 702 and the cleaning motor 504, and the angular velocities of the two rotations are the same, so as to remove the lint on the hole of the lint capturing hole 208, until the lint is completely cleaned and the airflow flow in the lint detection pipe 205 no longer changes;

[0093] After the lifting seat 501 returns to the initial position, the cleaning roller 6 is inside the upper shell 302, the lower shell 303 is closed, so that the cleaning roller 6 is in a sealed hollow structure, then buttons III and II are pressed in turn, so that the lint is scraped down by the through hole III 601 and stays on the outer surface of the cleaning roller 6, finally the lint staying on the outer surface of the cleaning roller 6 is sucked by the suction device, then buttons I and II are pressed in turn to make the elastic wire hook 701 extend out of the through hole III 601 and remain in the extended state, and finally the lower shell 303 is removed.

Claims

1. A device for preventing foreign matter from entering a pipeline, the pipeline comprising a branch flue (101) and a main flue (103) connected in sequence, the branch flue (101) being connected to the inside of a hot box (1) at a distal end thereof from the main flue (103), and the main flue (103) being connected to a fan; characterized in that, The pipeline foreign matter prevention device comprises a broken wire sensing device, a pneumatic baffle (2), a pneumatic telescopic rod (201) and a PLC controller. The pneumatic baffle (2) is fixedly connected with the telescopic end of the pneumatic telescopic rod (201), and the fixed end of the pneumatic telescopic rod (201) is fixedly connected with the heat box (1); when the pneumatic telescopic rod (201) is at the maximum range, the pneumatic baffle (2) separates the inside of the branch flue (101) from the inside of the heat box (1); the broken wire sensing device is used for detecting whether the wire bundle is broken. The pneumatic telescopic rod (201) and the broken wire sensing device are electrically connected with the PLC controller respectively; when the broken wire sensing device detects that the wire bundle is broken, the broken wire sensing device sends a signal to the PLC controller, and the PLC controller controls the pneumatic telescopic rod (201) to extend; when the broken wire sensing device senses that the wire bundle passes again, the broken wire sensing device sends a signal to the PLC controller, and the PLC controller controls the pneumatic telescopic rod (201) to retract.

2. A device for preventing the ingress of foreign matter into a pipe according to claim 1, characterized in that The pipeline foreign matter prevention device further comprises a lint detection device and a lint cleaning device. The pneumatic baffle (2) is a closed hollow structure, and a plurality of lint capture holes (208) are arranged on the side of the pneumatic baffle (2) facing the inside of the heat box (1); the lint capture holes (208) are in communication with the inside of the heat box (1) and the inside of the pneumatic baffle (2); the aperture of the lint capture holes (208) is 1-3 mm. The lint detection device comprises a high-pressure gas conveying pipe (202), an air flow sensor (207), a lint detection pipe (205) and a gas compression station. The length direction of the high-pressure gas conveying pipe (202) is the same as the length direction of the pneumatic telescopic rod (201), the gas compression station is connected with one end of the high-pressure gas conveying pipe (202), and the gas compression station is used for conveying high-pressure air flow into the high-pressure gas conveying pipe (202); one end of the lint detection pipe (205) is fixed on the pneumatic baffle (2) and is in communication with the inside of the pneumatic baffle (2); the other end of the lint detection pipe (205) is fixed on the peripheral surface of the high-pressure gas conveying pipe (202) and is in communication with the inside of the high-pressure gas conveying pipe (202); the air flow sensor (207) is arranged in the lint detection pipe (205), and the air flow sensor (207) is used for detecting whether the air flow in the lint detection pipe (205) changes when the gas compression station is in operation. The PLC controller is electrically connected with the gas compression station, the air flow sensor (207) and the lint cleaning device respectively; when the broken wire sensing device detects that the wire bundle is broken, the broken wire sensing device sends a signal to the PLC controller, and the PLC controller controls the pneumatic telescopic rod (201) to extend and the gas compression station to start; when the broken wire sensing device senses that the wire bundle passes again, the broken wire sensing device sends a signal to the PLC controller, and the PLC controller controls the pneumatic telescopic rod (201) to retract and the gas compression station to stop; when the air flow in the lint detection pipe (205) changes, the air flow sensor (207) sends a signal to the PLC controller, and the PLC controller controls the lint cleaning device to clean the lint capture holes (208) on the side of the pneumatic baffle (2) facing the inside of the heat box (1).

3. A device for preventing the ingress of foreign material into a pipe according to claim 2, wherein The included angle between the lint detection tube (205) and the high-pressure gas flow direction in the high-pressure gas pipe (202) is denoted as included angle a, and 45° < included angle a < 90°.

4. A device for preventing the ingress of foreign material into a duct according to claim 3, wherein The side surface of the heat box (1) is provided with a through hole I, and the end of the branch flue (101) away from the total flue (103) is connected with the inside of the heat box (1) through the through hole I.

5. A device for preventing the ingress of foreign material into a duct according to claim 4, wherein The lint cleaning device comprises a lifting mechanism and a cleaning roller brush (5); The lifting mechanism comprises a lifting screw (401), a lifting motor (402) and a lifting traction seat (501); The upper surface of the heat box (1) is provided with a through hole II, and the through hole II is connected with the outside and the inside of the heat box (1); the bottom of the inside of the heat box (1) is provided with a blind hole; The lifting screw (401) is vertically placed, one end of the lifting screw (401) passes through the through hole II and the blind hole in sequence, and is in clearance fit with the through hole II and the blind hole respectively, and the other end of the lifting screw (401) is fixedly connected with the motor shaft of the lifting motor (402); The lifting traction seat (501) is provided with a threaded through hole, the lifting traction seat (501) is sleeved on the lifting screw (401) through the threaded through hole, and is in threaded fit with the lifting screw (401); the cleaning roller brush (5) is fixedly connected with the lifting traction seat (501); When the pneumatic telescopic rod (201) is at the maximum range, the initial position of the lifting traction seat (501) on the lifting screw (401) is above the pneumatic baffle (2); The lifting motor (402) is electrically connected with the PLC controller, when the airflow flow in the lint detection tube (205) changes, the airflow sensor (207) sends a signal to the PLC controller, the PLC controller controls the lifting traction seat (501) of the lifting mechanism to move up and down, so that the cleaning roller brush (5) cleans the hole opening of the lint capturing hole (208) on the surface of the pneumatic baffle (2) facing the inside of the heat box (1); when the hole opening of the lint capturing hole (208) is cleaned, the airflow flow in the lint detection tube (205) no longer changes, the airflow sensor (207) sends a signal to the PLC controller, and the PLC controller controls the lifting traction seat (501) of the lifting mechanism to move upwards, so that the lifting traction seat (501) returns to the initial position.

6. A device for preventing the ingress of foreign material into a duct according to claim 5, wherein The cleaning roller brush (5) comprises a fixed connection ring (503), a cleaning motor (504), a driving gear (505), a cleaning roller (6), a transmission gear ring (602), an adjusting inner cylinder (7), an adjusting motor (702) and a spring wire hook (701); The fixed connection ring (503) is fixedly connected with the lifting traction seat (501); The adjusting motor (702) is fixed in the inside of the fixed connection ring (503); the adjusting inner cylinder (7) is horizontally placed, the motor shaft of the adjusting motor (702) is fixedly connected with the adjusting inner cylinder (7); the central axis of the adjusting inner cylinder coincides with the central axis of the fixed connection ring (503); The cleaning roller (6) is sleeved on the outside of the adjusting inner cylinder (7); the central axis of the cleaning roller (6) coincides with the central axis of the adjusting inner cylinder (7); one end of the cleaning roller (6) is rotationally connected with the fixed connection ring (503); the vertical plane where the central axis of the cleaning roller (6) is located is parallel to the pneumatic baffle (2); The cleaning motor (504) is fixed on the upper surface of the fixed connecting ring (503); the motor shaft of the cleaning motor (504) is fixedly connected with the driving gear (505); the peripheral surface of the cleaning roller (6) is provided with a transmission gear ring (602), and the transmission gear ring (602) is engaged with the driving gear (505); A plurality of through holes III (601) are distributed on the peripheral surface of the cleaning roller (6); the through holes III (601) are used for communicating the inside of the cleaning roller (6) with the outside of the cleaning roller (6); The elastic wire hook (701) is a metal wire bent at an angle of 90-170°; one end of the elastic wire hook (701) is fixedly connected with the peripheral surface of the adjusting inner cylinder (7) through the through hole III; the number of the elastic wire hooks (701) is the same as that of the through holes III, and each elastic wire hook (701) corresponds to one through hole III; The adjusting motor (702) and the cleaning motor (504) are electrically connected with the PLC controller; when the lifting traction seat (501) of the lifting mechanism moves up and down, the PLC controller controls the rotation of the adjusting motor (702) and the cleaning motor (504), and the angular velocities of the two are the same; The free end of the elastic wire hook (701) is denoted as c, the minimum distance between c and the peripheral surface of the cleaning roller (6) is d when the fixed connecting ring (503) is not fixedly connected with the lifting traction seat (501); the horizontal distance between the peripheral surface of the cleaning roller (6) and the pneumatic partition plate (2) is less than d.

7. A device for preventing the ingress of foreign material into a duct according to claim 6, wherein The pipeline foreign matter entering prevention device further comprises a lint processing device; The outer diameter of the fixed connecting ring (503) is greater than that of the transmission gear ring (602); the shell of the adjusting motor (702) is inserted into the inside of the fixed connecting ring (503) and is in transition fit with the fixed connecting ring (503); the cleaning motor (504) is fixed on the upper surface of the fixed connecting ring (503) through the fixing seat; The lint processing device comprises an upper shell, a lower shell, a suction device, a button I, a button II and a button III; The upper shell is a semi-closed structure with an opening downward; The upper shell is located in the heat box and is fixedly connected with the heat box; when the lifting traction seat (501) is located at the initial position, the cleaning roller (6) is located in the inside of the upper shell; The heat box is provided with a closed opening; the closed opening communicates the outside with the inside of the heat box; The lower shell is used for being inserted into the inside of the heat box from the closed opening, and forms a sealed hollow structure with the fixed connecting ring (503), the adjusting motor (702), the cleaning motor (504), the fixing seat and the upper shell; The button I, the button II and the button III are electrically connected with the cleaning motor (504) respectively; when the button I is pressed, the cleaning motor (504) drives the adjusting inner cylinder (7) to rotate forward so that the elastic wire hook (701) extends out of the through hole III (601); when the button II is pressed, the cleaning motor (504) stops rotating; when the button III is pressed, the cleaning motor (504) drives the adjusting inner cylinder (7) to rotate reversely so that the elastic wire hook (701) is retracted into the through hole III (601); The heat box is provided with a suction port (301); the suction port (301) communicates the inside of the upper shell with the outside; the suction device communicates with the inside of the upper shell through the suction port (301); the suction device is used for suctioning the inside of the upper shell.

8. A device for preventing foreign objects from entering a pipe according to claim 1, wherein The branch flue (101) is provided with a filter screen (102).

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