A system suitable for conveying granular powder materials

Abstract

This utility model discloses a granular powder conveying system, belonging to the field of powder conveying technology. It includes a oscillating conveyor, a material elevator, a bag filter, and a PLC control system. The oscillating conveyor and the material elevator are connected via a sealed conveying box, and the bag filter is connected to both the oscillating conveyor and the material elevator via dust collection pipes. The PLC control system is electrically connected to the drive motors of the oscillating conveyor, the material elevator, and the bag filter via communication cables, and receives the motor current signals from these motors in real time, performing interlocking control accordingly. This utility model achieves intelligent interlocking control between environmental protection equipment and production equipment, effectively preventing dust pollution caused by dust removal equipment malfunctions, improving the environmental hygiene level of the production site, meeting environmental protection and occupational health requirements, reducing manual intervention, and increasing the system's automation level.

Description

Technical Field

[0001] This utility model belongs to the field of powder conveying technology, specifically relating to a powder conveying system suitable for granular materials. Background Technology

[0002] In existing technologies, dust removal equipment and production equipment typically operate independently, lacking an effective interlocking control mechanism. When dust removal equipment malfunctions or fails to start, production equipment continues to operate, leading to severe dust pollution on-site, which not only pollutes the environment but also endangers the health of operators. Traditional methods rely on manual inspections to detect abnormalities before shutting down the equipment, resulting in a delayed response and an inability to achieve real-time control. Utility Model Content

[0003] Technical problem solved: In view of the technical problems existing in the background technology, this utility model provides a system suitable for conveying granular powder materials, which ensures that the production equipment stops immediately when the dust removal equipment malfunctions, thereby avoiding dust pollution.

[0004] Technical solution: The present invention provides a granular powder conveying system, comprising a oscillating conveyor, a material elevator, a bag filter, and a PLC control system; The oscillating conveyor and the material elevator are connected by a sealed conveying box, and the bag filter is connected to the oscillating conveyor and the material elevator respectively through a dust collection pipe; The PLC control system is electrically connected to the drive motors of the oscillating conveyor, the material elevator, and the bag filter via communication cables, and receives the motor current signals of the oscillating conveyor, the material elevator, and the bag filter in real time, and performs interlocking control accordingly.

[0005] Preferably, the oscillating conveyor includes a support frame and multiple drive swing rods hinged along the top of the support frame, with the tops of the drive swing rods hinged to the sealed conveying box; a conveying drive motor is correspondingly provided on the support frame to push the drive swing rods to oscillate periodically; a conveyor inlet is provided at the front end of the sealed conveying box, and a conveyor outlet is provided at the rear end of the sealed conveying box.

[0006] Preferably, the material hoist includes a vertically arranged hoist housing and a hoisting mechanism disposed within the hoist housing. A hoisting drive motor for driving the hoisting mechanism is disposed at the top of the hoist housing. A hoisting inlet is disposed on one side of the lower end of the hoist housing and is sealed to the discharge port of the conveyor. A hoisting discharge port is disposed on the other side of the upper end of the hoist housing.

[0007] Preferably, the bag filter is provided with a relay box at the front end, and the relay box is connected to the elevator housing and the sealed conveyor box through the elevator dust removal pipe and the conveyor dust removal pipe, respectively; The bag filter is connected to the relay box through the dust collector inlet pipe; The outlet of the bag filter is connected to an induced draft fan via an induced draft duct, and the induced draft fan is equipped with an induced draft motor.

[0008] Preferably, the conveying drive motor, the lifting drive motor, and the induced draft motor are electrically connected to the PLC control system and provide real-time feedback of motor signals to the PLC control system.

[0009] Preferably, when the PLC control system does not detect the motor current signal of the bag filter, it issues an alarm and cuts off the power supply to the oscillating conveyor and the material elevator.

[0010] Preferably, the PLC control system needs to detect the motor current signal of the bag filter before starting the swing conveyor and the material elevator.

[0011] Preferably, the PLC control system further includes a PLC control module and an audible and visual alarm.

[0012] Compared with the prior art, the present invention has at least the following beneficial effects: The present invention interlocks the oscillating conveyor, the material elevator and the bag filter, realizing intelligent interlock control between environmental protection equipment and production equipment, effectively preventing dust pollution caused by dust removal equipment failure, improving the environmental hygiene level of the production site, and meeting environmental protection and occupational health requirements; reducing manual intervention and improving the automation level of the system. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the conveying system structure of this utility model.

[0014] Reference numerals: 1. Oscillating conveyor; 101. Sealed conveyor housing; 102. Conveyor inlet; 103. Conveyor outlet; 104. Support frame; 105. Drive swing arm; 106. Conveyor drive motor; 2. Material hoist; 201. Hoist housing; 202. Hoisting mechanism; 203. Hoist inlet; 204. Hoisting drive motor; 205. Hoist discharge port; 3. Baghouse dust collector; 4. Relay box; 5. Elevator dust collection pipeline; 6. Conveyor dust collection pipeline; 7. Dust collector inlet pipeline; 8. Exhaust duct; 9. Exhaust fan; 10. Exhaust pipeline; 11. PLC control system; 12. Communication cable. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings. Figure 1The technical solutions of the embodiments of this utility model are clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0016] like Figure 1 As shown, this utility model discloses a granular powder conveying system, including a oscillating conveyor 1, a material elevator 2, a bag filter 3, and a PLC control system 11. The oscillating conveyor 1 and the material elevator 2 are connected through a sealed conveying box, and the bag filter 3 is connected to both the oscillating conveyor 1 and the material elevator 2 through dust collection pipes. The PLC control system 11 is electrically connected to the drive motors of the oscillating conveyor 1, the material elevator 2, and the bag filter 3 through communication cables 12, and receives the motor current signals of the oscillating conveyor 1, the material elevator 2, and the bag filter 3 in real time, and performs interlocking control accordingly. When the PLC control system 11 does not detect the motor current signal of the bag filter 3, it issues an alarm and cuts off the power supply to the oscillating conveyor 1 and the material elevator 2. During the startup phase, the PLC control system 11 must first detect the motor current signal of the bag filter 3 before starting the oscillating conveyor 1 and the material elevator 2. This utility model interlocks the oscillating conveyor, the material elevator, and the bag filter, realizing intelligent interlock control between environmental protection equipment and production equipment. It effectively prevents dust pollution caused by dust removal equipment failure, improves the environmental hygiene level of the production site, and meets environmental protection and occupational health requirements. It also reduces manual intervention and improves the automation level of the system.

[0017] In one specific embodiment, the oscillating conveyor 1 includes a support frame 104 and multiple drive swing rods 105 hinged along the top of the support frame 104. The tops of the multiple drive swing rods 105 are hinged to a sealed conveying box 101. An elastic connector is provided between the sealed conveying box 101 and each drive swing rod 105. A conveying drive motor 106 is correspondingly provided on the support frame 104 to push the drive swing rods 105 to oscillate periodically. A conveyor inlet 102 is provided at the front end of the sealed conveying box 101, and a conveyor outlet 103 is provided at the rear end of the sealed conveying box 101.

[0018] In one specific embodiment, the material elevator 2 includes a vertically arranged elevator housing 201 and a lifting mechanism 202 disposed within the elevator housing 201. The lifting mechanism 202 includes a drive shaft rotatably connected to the upper and lower ends of the elevator housing 201, and the drive shafts are supported on the elevator housing 201 by support bearings. Two drive sprockets are fixedly mounted inside the elevator housing 201 on the drive shafts. The two drive sprockets, corresponding to the upper and lower ends, are connected by a drive chain, and multiple lifting buckets are hinged at equal intervals along the circumference between the two sets of drive chains. A lifting drive motor 204 for driving the lifting mechanism 202 is disposed at the top of the elevator housing 201. An elevator inlet 203, which is sealed and connected to the conveyor discharge port 103, is disposed on one side of the lower end of the elevator housing 201, and an elevator discharge port 205 is disposed on the other side of the upper end of the elevator housing 201. During operation, the oscillating conveyor 1 can continuously transport materials through the elevator inlet 203 to the material elevator 2 for continuous lifting and conveying to the silo for storage.

[0019] The bag filter 3 is equipped with a relay box 4 at its front end. The relay box 4 is connected to the elevator housing 201 and the sealed conveyor box 101 through the elevator dust removal pipe 5 and the conveyor dust removal pipe 6, respectively. The bag filter 3 is connected to the relay box 4 through the dust collector inlet pipe 7. The outlet end of the bag filter 3 is connected to the induced draft fan 9 through the induced draft pipe 8. The induced draft fan 9 is equipped with an induced draft motor, and the outlet end of the induced draft fan 9 is connected to the exhaust pipe 10. The conveyor drive motor 106, the elevator drive motor 204, and the induced draft motor are electrically connected to the PLC control system 11 and provide real-time feedback of motor signals to the PLC control system 11. The PLC control system 11 is connected to various sensors and actuators through the communication cable 12 to realize signal acquisition and equipment control. During operation, the induced draft fan 9 provides suction power to the bag filter 3, so that the bag filter 3 can collect the dust generated by the oscillating conveyor 1 and the material elevator 2 during operation, effectively preventing dust pollution caused by dust removal equipment failure and improving the environmental hygiene level of the production site.

[0020] The PLC control system 11 at least comprises a PLC control module and an audible and visual alarm, wherein the PLC control module is electrically connected to each actuator (such as a drive motor) respectively; after a failure of the induced draft motor configured in cooperation with the bag-type dust collector is detected, an audible and visual alarm is used to promptly remind an operator to perform maintenance. The PLC control system includes at least one working condition detection module connected to the PLC control module, the working condition detection modules are arranged corresponding to the swing conveyor, the material hoist and the bag-type dust collector respectively, the PLC control module is connected to the working condition detection modules, and the PLC control module is electrically connected to the conveying drive motor 106, the hoisting drive motor 204 and the induced draft motor; the PLC control module acquires the working states of the swing conveyor, the material hoist and the bag-type dust collector through the working condition detection modules, and controls the starting or stopping of the conveying drive motor 106, the hoisting drive motor 204 and the induced draft motor. In a specific embodiment, the working condition detection module is selected from a displacement detection module, a rotation speed detection module, a material level detection module or a current detection module; if the current detection module is selected, the current detection modules are arranged corresponding to each drive motor respectively and are configured to monitor the current of the drive motors.

[0021] The interlock control logic or working principle of the conveying system of the present utility model is as follows: (1) Startup stage: detecting the current of the induced draft motor configured in cooperation with the dust collector → if the current is normal, starting the swing conveyor and the material hoist → if the current is abnormal, cutting off the power of the corresponding drive motors of the swing conveyor and the material hoist through interlock control and triggering an alarm; (2) Operation stage: the PLC control system 11 continuously monitors the current signals of each drive motor → if abnormal current of a drive motor is found, controlling all drive motors to stop through interlock and triggering an alarm, so as to facilitate subsequent maintenance.

[0022] The above is the preferred embodiment of the present utility model, it should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications shall also be regarded as the protection scope of the present utility model.

Claims

1. A system for conveying granular powder materials, characterized in that, It includes a swing conveyor (1), a material hoist (2), a bag filter (3) and a PLC control system (11). The oscillating conveyor (1) and the material elevator (2) are connected by a sealed conveying box, and the bag filter (3) is connected to the oscillating conveyor (1) and the material elevator (2) respectively through a dust collection pipe. The PLC control system (11) is electrically connected to the drive motors of the swing conveyor (1), the material elevator (2), and the bag filter (3) via communication cables (12), and receives the motor current signals of the swing conveyor (1), the material elevator (2), and the bag filter (3) in real time, and performs interlocking control accordingly.

2. The granular powder conveying system according to claim 1, characterized in that, The swing conveyor (1) includes a support frame (104) and multiple drive swing rods (105) hinged along the top of the support frame (104). The top of the multiple drive swing rods (105) is hinged to the sealed conveyor box (101). A conveyor drive motor (106) is correspondingly provided on the support frame (104) to push the drive swing rods (105) to swing periodically. A conveyor inlet (102) is provided at the front end of the sealed conveyor box (101), and a conveyor outlet (103) is provided at the rear end of the sealed conveyor box (101).

3. The granular powder conveying system according to claim 2, characterized in that, The material hoist (2) includes a vertically arranged hoist housing (201) and a hoisting mechanism (202) arranged inside the hoist housing (201). The top of the hoist housing (201) is provided with a hoisting drive motor (204) that drives the hoisting mechanism (202). The lower end of the hoist housing (201) is provided with a hoisting inlet (203) that is sealed and connected to the conveyor discharge port (103), and the upper end of the hoist housing (201) is provided with a hoisting discharge port (205).

4. The granular powder conveying system according to claim 3, characterized in that, The bag filter (3) is equipped with a relay box (4) at the front end. The relay box (4) is connected to the elevator housing (201) and the sealed conveyor box (101) through the elevator dust removal pipe (5) and the conveyor dust removal pipe (6), respectively. The bag filter (3) is connected to the relay box (4) through the dust collector inlet pipe (7); The outlet end of the bag filter (3) is connected to the induced draft fan (9) through the induced draft pipe (8), and the induced draft fan (9) is equipped with an induced draft motor.

5. The granular powder conveying system according to claim 4, characterized in that, The conveying drive motor (106), the lifting drive motor (204), and the induced draft motor are electrically connected to the PLC control system (11) and provide real-time feedback of motor signals to the PLC control system (11).

6. The granular powder conveying system according to any one of claims 1-5, characterized in that, When the PLC control system (11) does not detect the motor current signal of the bag filter (3), it issues an alarm and cuts off the power supply to the swing conveyor (1) and the material elevator (2).

7. The granular powder conveying system according to claim 6, characterized in that, The PLC control system (11) needs to detect the motor current signal of the bag filter (3) during the startup phase, and then start the swing conveyor (1) and the material elevator (2).

8. The granular powder conveying system according to claim 6, characterized in that, The PLC control system (11) also includes a PLC control module and an audible and visual alarm.

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