Belt conveyor chute blockage detection device

Abstract

The utility model discloses a belt conveyor chute blockage detection device which is characterized in that a belt conveyor is controlled by an on-off switch, an audible and visual alarm is arranged on the belt conveyor chute, a door-shaped movable plate is arranged on one side of the belt conveyor chute, and the belt conveyor chute is connected with the door-shaped movable plate through at least two rotating hinges; a metal induction signal detector is arranged on one side of the door-shaped movable plate, and a metal steel plate is arranged on the door-shaped movable plate close to one side of the metal induction signal detector; the metal induction signal detector is electrically connected with the signal input end of the DOS control system, and the signal output end of the DOS control system is electrically connected with the audible and visual alarm and an on-off switch of the belt conveyor. The device can realize quick and accurate detection of the blockage of the chute of the belt conveyor, timely fault interlocking shutdown of a control system, is stable in detection, quick in response and simple to operate and maintain, avoids serious blockage accidents caused by detection failure, prolongs the service life of the belt, and is safe, reliable, intelligent and convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the bulk material transportation field of belt conveyor, concretely relates to a belt conveyor chute blocking detection device. BACKGROUND

[0002] With the continuous development of industrial technology, the bulk material transportation by the belt conveyor has become the mainstream process of material conveying, which has the characteristics of wide conveying material types, wide conveying capacity range, strong adaptability, flexible loading and unloading, and convenient maintenance and replacement. When the bulk material is transported by the belt conveyor, it needs to be transferred by the transfer station and the chute. Since the belt conveyor of the newly built project has high capacity, and double lines are used as backup, the height and length of the chute are increased. In addition, due to environmental protection requirements, all the materials before entering the factory are treated with dust suppression measures, which results in high moisture content of the materials and further aggravates the chute blocking.

[0003] At present, the blocking detection is mainly carried out by the blocking detector with a blocking rotor and the blocking detector with an internal baffle. However, the following problems exist in the detection process: ① When the material is wet, the detection will fail due to the material accumulation; ② The internal baffle will be damaged due to material abrasion, resulting in detection failure; ③ The detection device will fail after clamping the block, resulting in detection failure. Once the chute blocking detection fails, it will cause serious blocking accidents, resulting in belt breakage and high safety hazards. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of belt conveyor chute blocking detection device, to solve the problem that existing blocking detection device is easily influenced by material, and detection fails, and then causes serious blocking accident, resulting in belt breakage, and there is big safety hazard.

[0005] To achieve its purpose, the utility model adopts the following technical solutions:

[0006] A kind of belt conveyor chute blocking detection device, the belt conveyor is controlled by on-off switch, and sound-light alarm is arranged on the belt conveyor chute, door-shaped movable plate is arranged on one side of the belt conveyor chute, and at least two rotating hinges are connected between the belt conveyor chute and the door-shaped movable plate;Metal induction signal detector is arranged on one side of the door-shaped movable plate, and metal steel plate is arranged on the door-shaped movable plate close to the metal induction signal detector;The signal input end of DOS control system is electrically connected with the metal induction signal detector, and the signal output end of DOS control system is electrically connected with the sound-light alarm and the on-off switch of the belt conveyor respectively.

[0007] Further, limit baffle is arranged on the outer side of the door-shaped movable plate on the same side of the metal steel plate, and the limit baffle away from the door-shaped movable plate is fixedly connected with the belt conveyor chute.

[0008] Further, the overall height of the metal steel plate is greater than the detection range of the metal induction signal detector.

[0009] Further, the door-shaped movable plate is connected with a counterweight adjusting bolt, and a plurality of nuts are connected with the counterweight adjusting bolt.

[0010] Compared with the prior art, the utility model has the advantages of the following:

[0011] 1. The chute blocking detection device of the belt conveyor, when the chute of the belt conveyor is blocked, the bulk material in the chute gradually accumulates on the door-shaped movable plate, the door-shaped movable plate rotates outward after being pressed by the bulk material, until the metal steel plate on the door-shaped movable plate moves to the sensing area of the metal induction signal detector, then sends a blocking signal to the DCS control system, and the control system is interlocked to stop.

[0012] 2. The chute blocking detection device of the belt conveyor, the door-shaped movable plate on the same side of the metal steel plate is provided with a limiting baffle on the outer side, and one end of the limiting baffle away from the door-shaped movable plate is fixedly connected with the chute of the belt conveyor, when the door-shaped movable plate starts to rotate outward due to the lateral pressing force of the bulk material, the door-shaped movable plate is blocked when the metal steel plate rotates to the outer edge of the sensing area of the metal induction signal detector, so that the bulk material is prevented from accumulating too quickly, the metal steel plate is prevented from rotating to the outside of the sensing area of the metal induction signal detector in a short time, and the blocking signal detection is prevented from being unable to send a fault blocking signal to the control system in time.

[0013] 3. The chute blocking detection device of the belt conveyor, the counterweight adjusting bolt and the nut are arranged on the door-shaped movable plate, so that the speed and sensitivity of the rotation of the door-shaped movable plate are controlled, false alarms caused by chute vibration and the like are avoided, and the signal detection accuracy is ensured.

[0014] 4. The chute blocking detection device of the belt conveyor, which is installed on the side surface of the chute of the belt conveyor, the door-shaped movable plate directly contacts the bulk material, and the rest of the device is installed outside the chute, so that the chute blocking detection device is prevented from being not sensitive or damaged due to the moisture and bulk material of the bulk material, and the device is convenient to maintain and check. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the chute blocking detection device of the belt conveyor.

[0016] In the figure: 1 is a door-shaped movable plate, 2 is a counterweight adjusting bolt, 3 is a rotating hinge, 4 is a metal induction signal detector, 5 is a metal steel plate, 6 is a DCS control system, and 7 is a limiting baffle. DETAILED DESCRIPTION

[0017] The utility model is further described below in combination with the drawings:

[0018] As Figure 1 shown, the utility model discloses a belt feeder chute material blocking detection device, the belt feeder is controlled through the on-off switch, is equipped with the audible -visual annunciator on the belt feeder chute. Belt feeder chute one side is equipped with the door type movable board 1, and the door type movable board 1 between belt feeder chute adopts two rotating hinges 3 to connect, and one piece of rotating hinge 3 is welded on the belt feeder chute, and the other piece is welded on the door type movable board 1. The door type movable board 1 upper portion is connected with the counterweight adjusting bolt 2, and the counterweight adjusting bolt 2 is connected with two nuts, and by adjusting the nut on the counterweight adjusting bolt 2, the speed and sensitivity of the door type movable board 1 are controlled, to avoid false alarm caused by chute vibration and other reasons, ensure signal detection accuracy. The door type movable board 1 one side is equipped with the metal induction signal detector 4, and the door type movable board 1 near the metal induction signal detector 4 one side is equipped with the metal steel sheet 5, to ensure that the material blocking signal detection is effective, and the overall height of the metal steel sheet 5 is greater than the detection range of the metal induction signal detector 4. The metal induction signal detector 4 is electrically connected with the signal input end of DOS control system 6, and the signal output end of DOS control system 6 is electrically connected with the audible -visual annunciator and the on-off switch of belt feeder respectively, to transmit the material blocking signal.

[0019] When the material in the belt feeder chute is blocked, the material is accumulated to the lower edge of the door type movable board 1 in the chute, and with the extension of the material blocking time, the accumulated material starts to side extrude the door type movable board 1, and under the driving of the extrusion force, the door type movable board 1 drives the rotating hinge 3 and the metal steel sheet 5 welded on the door type movable board 1 to rotate outward, so that the metal steel sheet 5 gradually approaches the metal induction signal detector 4, and with the accumulation of the material, the door type movable board 1 gradually rotates outward. When the metal steel sheet 5 enters the induction area of the metal induction signal detector 4, the metal induction signal detector 4 detects the material blocking signal and feeds back to the DCS control system 6, and when the signal lasts for 2s, the DCS control system 6 issues a material blocking fault interlock shutdown instruction and controls the audible -visual annunciator to alarm, and the system fault interlock shutdown, so as to clean the material blocking. The outer side of the door type movable board 1 on the same side of the metal steel sheet 5 is provided with a limiting baffle 7, one end of the limiting baffle 7 away from the door type movable board 1 is fixedly connected with the belt feeder chute, and the door type movable board 1 starts to rotate outward due to the side extrusion force of the material, and when the metal steel sheet 5 rotates to the outer edge of the induction area of the metal induction signal detector 4, the limiting baffle 7 blocks the door type movable board 1, to avoid that the material is accumulated too fast, the metal steel sheet 5 rotates to the outside of the induction area of the metal induction signal detector 4 in a short time (within 2s), the signal continuous detection time of 2s is not reached, the material blocking signal detection is caused due to the insufficient duration, and the fault material blocking signal cannot be sent to the control system in time.

Claims

1. A belt conveyor chute blocking detection device, the belt conveyor is controlled by an on-off switch, and an audible and visual alarm is arranged on the belt conveyor chute, characterized in that: The side of the belt conveyor chute is provided with a door-shaped movable plate (1), and the belt conveyor chute and the door-shaped movable plate (1) are connected by at least two rotating hinges (3); one side of the door-shaped movable plate (1) is provided with a metal induction signal detector (4), and a metal steel plate (5) is arranged on the door-shaped movable plate (1) near the metal induction signal detector (4); the metal induction signal detector (4) is electrically connected with a signal input end of a DOS control system (6), and a signal output end of the DOS control system (6) is electrically connected with a sound-light alarm and an opening and closing switch of the belt conveyor respectively.

2. The device for detecting the blockage of the chute of the belt conveyor according to claim 1, characterized in that: The outer side of the door-shaped movable plate (1) on the same side of the metal steel plate (5) is provided with a limiting baffle (7), and one end of the limiting baffle (7) away from the door-shaped movable plate (1) is fixedly connected with the belt conveyor chute.

3. The device for detecting the blockage of the chute of the belt conveyor according to claim 2, characterized in that: The overall height of the metal steel plate (5) is greater than the detection range of the metal induction signal detector (4).

4. The device for detecting the blockage of the chute of the belt conveyor according to claim 3, characterized in that: The door-shaped movable plate (1) is connected with a counterweight adjusting bolt (2) at the upper portion, and a plurality of nuts are connected on the counterweight adjusting bolt (2).

Images