Belt conveyor funnel overflow detection device

Abstract

The utility model relates to the technical field of detection equipment, in particular to a belt conveyor funnel overflow detection device which comprises mounting frames arranged on two sides of a belt conveyor in the length direction, and the top ends of the mounting frames are higher than the top surface of a return belt. A tearing detector which is located above the return belt and is triggered through materials on the top face of the return belt is installed between the installation frames. According to the detection device, the traditional chute blockage detection form in the industry is changed, the defect that traditional blockage detection cannot be accurately and timely triggered under various factors such as different chute structures and different material properties is overcome, and the problem that virtual blockage of the funnel position is not easy to detect is effectively solved; meanwhile, the detection device is arranged above a return belt of the belt conveyor, so that inspection, maintenance, reset and adjustment operations are facilitated, and the climbing risk of daily maintenance and reset operation of traditional chute blockage detection is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to a belt conveyor hopper overflow detection device. Background Art

[0002] Belt conveyors are widely used in bulk cargo loading and unloading or transportation industries, such as port terminals, mine concentrators, and steel mill raw material plants.

[0003] During the bulk cargo transportation and transshipment process using a belt conveyor, chute blockage is a frequent production problem. The industry generally installs a detection window in the non-material receiving area in the middle and lower part of the chute body, and uses a short-stroke mechanical switch or proximity switch to detect the movement of the window to issue a blockage warning.

[0004] Due to the differences in material properties and window layout positions, when blockage occurs, the accumulated materials cannot accurately match the blockage trigger window and trigger it, resulting in poor blockage detection sensitivity or failure to trigger an alarm. At the same time, the virtual blockage caused by sticky materials at the throat of the funnel cannot be detected. Utility Model Content

[0005] In order to achieve accurate detection of chute blockage during conveyor belt transportation, to make up for the inability of conventional blockage detection methods to detect virtual blockage in the hopper, and to improve the accuracy and sensitivity of blockage detection, the utility model provides a belt conveyor hopper overflow detection device.

[0006] The belt conveyor hopper overflow detection device provided by the utility model adopts the following technical solution:

[0007] The belt conveyor hopper overflow detection device comprises mounting frames arranged on both sides of the belt conveyor in the length direction, the top of the mounting frames is higher than the top surface of the return belt, and a tearing detector is installed between the mounting frames, which is located above the return belt and triggered by the material on the top surface of the return belt.

[0008] By adopting the above technical solution, the detection device changes the traditional chute blockage detection form in the industry, avoids the disadvantage that the traditional blockage detection cannot be accurately and timely triggered under many factors such as different chute structures and different material properties, and effectively solves the problem of difficult detection of virtual blockage at the funnel position. At the same time, the detection device is arranged above the return belt of the belt conveyor, which is convenient for inspection, maintenance, reset and adjustment operations, avoiding the risk of climbing in daily maintenance and reset operations of traditional chute blockage detection.

[0009] Optionally, the tear detector includes a detector body arranged on a mounting frame, a rubber sleeve with a built-in metal sheet is detachably provided on the detector body, and a tear pull rope is connected between the rubber sleeve and another mounting frame.

[0010] By adopting the above technical solution, the material pulls the tear rope, and the tear rope pulls the rubber sleeve off the detector body, thereby triggering an alarm. This form of tear detection device is easy to operate, has stable performance and strong practicality.

[0011] Optionally, the tear cord is 20 mm above the top surface of the return belt.

[0012] By adopting the above technical solution, the tear rope can be more effectively contacted with the material.

[0013] Optionally, the tear cord is a low-stretch steel wire.

[0014] By adopting the above technical solution, the sensitivity of tearing the drawstring can be improved.

[0015] Optionally, the tear cord diameter is 2 mm.

[0016] By adopting the above technical solution, the sensitivity of tearing the drawstring can be improved.

[0017] Optionally, a rope clip is installed on the tear rope.

[0018] By adopting the above technical solution, it is convenient to adjust the length of the tear rope according to actual needs.

[0019] Optionally, the tear detector is 1.5 m away from the edge of the funnel outlet.

[0020] By adopting the above technical solution, the tear detector is reasonably located, which is convenient for detection according to work needs.

[0021] Optionally, the tear detector is a delayed alarm type sensor.

[0022] By adopting the above technical solution, the situation of false alarm is reduced.

[0023] Optionally, the delay alarm time of the tear detector is 2s.

[0024] In summary, the present invention includes at least one of the following beneficial technical effects:

[0025] This detection device changes the traditional chute blockage detection form in the industry, avoiding the disadvantages of traditional blockage detection that cannot be triggered accurately and timely under many factors such as different chute structures and different material properties, and effectively solves the problem of difficult detection of virtual blockage at the funnel position. The detection device is arranged above the return belt of the belt conveyor, which is convenient for inspection, maintenance, reset and adjustment operations, avoiding the risk of climbing in daily maintenance and reset operations of traditional chute blockage detection;

[0026] The material pulls the tear rope, and the tear rope pulls the rubber sleeve off the detector body, thereby triggering an alarm. This type of tear detection device is easy to operate, has stable performance and strong practicality;

[0027] The delayed alarm sensor design reduces false alarms. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The utility model is a schematic diagram of the installation position of the belt conveyor hopper overflow detection device.

[0029] Figure 2 The utility model is a structural schematic diagram of a belt conveyor hopper overflow detection device.

[0030] Explanation of the reference numerals: 1. Belt conveyor; 10. Head roller; 11. Surface increasing roller; 12. Intermediate frame; 13. Roller frame; 14. Return flat support; 15. Conveyor belt; 150. Return belt; 2. Funnel; 3. Mounting frame; 4. Tear detector; 40. Detector body; 41. Rubber sleeve; 42. Tear rope. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1 -Attached Figure 2 The utility model is described in further detail.

[0032] The utility model discloses a belt conveyor hopper overflow detection device. Figure 1 The belt conveyor hopper overflow detection device acts on the belt conveyor 1, the discharge end of the belt conveyor 1 extends into the hopper 2, the material falls into the hopper 2 from the discharge end of the belt conveyor 1, and then enters the chute through the hopper 2.

[0033] Reference Figure 1 and Figure 2 The belt conveyor 1 includes a head roller 10, a surface-increasing roller 11, an intermediate frame 12, a roller support frame 13, a return flat support 14 and a conveyor belt 15. The head roller 10 is located in the funnel 2, two intermediate frames 12 are provided along the length direction of the belt conveyor 1 and are respectively located on both sides of the belt conveyor 1, the roller support frame 13 is vertically fixed to the bottom of the intermediate frame 12, the return flat support 14 is rotatably connected between the two roller support frames 13, and the return part of the conveyor belt 15 is set as a return belt 150, which is provided above the return flat support 14 and is supported by the return flat support 14 in a rolling manner.

[0034] Reference Figure 1 and Figure 2A mounting frame 3 is vertically fixed on both sides of the belt conveyor 1 in the length direction. The mounting frame 3 is located between the surface increasing roller 11 and the return flat support 14. The top of the mounting frame 3 is higher than the top surface of the return belt 150. A tear detector 4 is installed between the tops of the two mounting frames 3. The tear detector 4 is located above the return belt 150, and the tear detector 4 is about 1.5m away from the outlet edge of the funnel 2. Comb rollers, spiral rollers and V-shaped rollers should not be set before and after the installation position of the tear detector 4, and belt pressing rollers, return cleaners and other components that contact the transmission surface of the return belt 150 should not be set in front of the running direction of the return belt 150.

[0035] Reference Figure 2 The tear detector 4 includes a detector body 40 mounted on a mounting frame 3, and a rubber sleeve 41 is detachably mounted on the detector body 40, and an iron sheet for triggering a signal point is embedded in the rubber sleeve 41. A tear pull rope 42 is also connected between the rubber sleeve 41 and another mounting frame 3, and the tear pull rope 42 is located 20 mm above the return belt 150, so as to effectively contact the material.

[0036] Reference Figure 2 A rope clip for adjusting the working length of the tear rope 42 is installed on the tear rope 42 to facilitate the later length adjustment. In the untriggered state, the rubber sleeve 41 should be tightly fixed to withstand the weight of the triggered tear rope 42. The tear rope 42 uses a low-stretch rate steel wire with a diameter of 2 mm.

[0037] The tear detector 4 in this embodiment is controlled by PLC and connected to the belt conveyor 1 system. It is a delayed alarm sensor, which displays the status through a flashing light on the display screen. When overflow occurs, the material carried on the return belt 150 pulls the tear rope 42, thereby causing the rubber sleeve 41 to separate from the detector body 40, and a fault signal is issued after waiting for 2 seconds. When the overflow is handled and the rubber sleeve 41 returns to its original position, the signal is released.

[0038] The implementation principle of the belt conveyor hopper overflow detection device of the embodiment of the utility model is: when the chute is blocked, the material will fill the chute in a very short time and overflow from the funnel 2, and when the funnel 2 is blocked, the material will overflow immediately and squeeze into the top surface of the return belt 150 from both sides of the head roller 10.

[0039] According to the characteristic of "spilling as soon as the material is blocked" when the material is blocked, the utility model creatively changes the original material blockage detection into overflow detection. When the return belt 150 carries the material to move, the material pulls the tear rope 42 and causes the rubber sleeve 41 to separate from the detector body 40, triggering an alarm signal, thereby controlling the belt conveyor 1 to stop, and subsequent staff can clear the blockage and return the rubber sleeve 41 to its original position.

[0040] The detection device of the utility model changes the traditional chute blockage detection form in the industry, avoids the disadvantage that the traditional blockage detection cannot be accurately and timely triggered under many factors such as different chute structures and different material properties, and effectively solves the problem of the difficulty in detecting the virtual blockage at the funnel 2 position. At the same time, the detection device is arranged above the return belt 150 of the belt conveyor 1, which is convenient for inspection, maintenance, reset and adjustment operations, avoiding the risk of climbing in daily maintenance and reset operations of traditional chute blockage detection.

[0041] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. Belt conveyor hopper overflow detection device, characterized by: The invention comprises mounting frames (3) arranged on both sides of the belt conveyor (1) in the length direction, the top ends of the mounting frames (3) being higher than the top surface of the return belt (150), and a tear detector (4) located above the return belt (150) and triggered by the material on the top surface of the return belt (150) being installed between the mounting frames (3).

2. The belt conveyor hopper overflow detection device according to claim 1, characterized in that: The tear detector (4) comprises a detector body (40) arranged on a mounting frame (3), a rubber sleeve (41) with a built-in metal sheet being detachably mounted on the detector body (40), and a tear pull rope (42) being connected between the rubber sleeve (41) and another mounting frame (3).

3. The belt conveyor hopper overflow detection device according to claim 2, characterized in that: The tear rope (42) is 20 mm higher than the top surface of the return belt (150).

4. The belt conveyor hopper overflow detection device according to claim 2, characterized in that: The tear cord (42) is a low-stretch steel wire.

5. The belt conveyor hopper overflow detection device according to claim 2, characterized in that: The tear cord (42) has a diameter of 2 mm.

6. The belt conveyor hopper overflow detection device according to claim 2, characterized in that: A rope clamp is installed on the tear rope (42).

7. The belt conveyor hopper overflow detection device according to claim 1, characterized in that: The tear detector (4) is 1.5 m away from the outlet edge of the funnel (2).

8. The belt conveyor hopper overflow detection device according to claim 1, characterized in that: The tear detector (4) is a delayed alarm type sensor.

9. The belt conveyor hopper overflow detection device according to claim 8, characterized in that: The delayed alarm time of the tear detector (4) is 2s.

Images