A detection assembly for preventing material spillage from a hopper and a control system incorporating the detection assembly

Abstract

The utility model relates to a kind of detection assembly and control system comprising the detection assembly for preventing material hopper to be filled with material, belong to material transfer technical field;The detection assembly of the utility model includes fork body, fork body pedestal, locking nut, junction box, baffle and audible and visual alarm, fork body is connected between junction box by fork body pedestal, the outer wall of fork body pedestal is equipped with thread, fork body pedestal passes through material hopper and is fixed with locking nut, junction box is connected with audible and visual alarm by normally open contact of intermediate relay, triggers audible and visual alarm alarm when appearing to be filled with material;The control system for preventing material hopper to be filled with material of the utility model includes above-mentioned detection assembly, material hopper, first belt and second belt, material hopper is arranged between first belt and second belt, normally closed contact of intermediate relay is connected in series with first belt control system, triggers first belt to be shut down when appearing to be filled with material, effectively avoid the occurrence of being filled with material accident, simultaneously avoid the environmental pollution caused by material hopper to be filled with material.

Description

Technical Field

[0001] This utility model belongs to the field of material transfer technology. Specifically, it relates to a detection component for preventing hopper overflow and a control system including the detection component. Background Technology

[0002] Material transfer operations are common in industrial production, typically using a combination of conveyor belts and hoppers. One conveyor belt transports material to a hopper, which then transfers it to the next conveyor belt. In zinc hydrometallurgical production, transporting zinc concentrate from the raw material storage silo to the fluidized bed furnace requires multiple conveyor belts and hoppers for several transfers. During this process, material buildup in the hoppers can occur. If this buildup is not detected in time, and the previous conveyor belt continues to supply material, it can lead to overflowing of the hopper, causing unplanned shutdowns of the feeding system and environmental pollution. Summary of the Invention

[0003] In order to overcome the problems existing in the background technology, the present invention provides a detection component for preventing hopper overflow and a control system including the detection component, which can detect the material blockage in the hopper and stop the belt system in time when the material is blocked, effectively avoiding unplanned shutdowns caused by hopper overflow, improving the operating rate of the production equipment, and avoiding environmental pollution caused by hopper overflow.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: The detection component for preventing hopper overflow includes a fork body, a fork body base, a locking nut, a junction box, a baffle plate, and an audible and visual alarm. The fork body and the junction box are connected through the fork body base, the outer wall of which is threaded. The fork body base passes through the hopper and is fixed to the hopper wall with a locking nut. The junction box is connected to an intermediate relay, and the normally open contact of the intermediate relay is connected to the audible and visual alarm.

[0005] Preferably, the baffle plate is fixed on the inner wall of the hopper, and the installation position is directly above the fork body and avoids the drop point of the first belt.

[0006] Preferably, the detection component is fixed to the hopper wall, and after fixing, the fork body is in a horizontal state, while the two parallel surfaces of the fork body are in a vertical state.

[0007] Preferably, the baffle is longer than the fork and a gap is maintained between them.

[0008] Preferably, the hopper is positioned between the first belt and the second belt.

[0009] Preferably, the power supply for the detection components is a safe 24V voltage. The control system for preventing hopper overflow includes the aforementioned anti-overflow detection component, as well as a first belt, a second belt, and a hopper; the hopper is disposed between the first belt and the second belt.

[0010] Preferably, the control system for preventing hopper overflow also includes an AC / DC power conversion module, an intermediate relay, a first air switch, a second air switch, an audible and visual alarm, a detection component, a first belt control system, and a first belt control power supply. The AC / DC power conversion module and the intermediate relay are both installed in the first belt distribution cabinet. The AC / DC power conversion module is connected to the first belt control power supply through the first air switch, converting 220V AC power into 24V DC power. The normally open contact of the intermediate relay is connected in series with the audible and visual alarm and then connected to the L and N terminals of the first belt control system. The normally closed contact of the intermediate relay is connected in series between the first belt control system and the L terminal.

[0011] Preferably, a three-core cable is laid between the junction box of the first belt distribution cabinet and the detection component. The first and second cores of the cable at the distribution cabinet end are connected to the load end of the second air switch. The power input end of the second air switch is connected to the 24V terminal of the AC / DC power conversion module to supply power to the detection component. The third core of the cable at the distribution cabinet end is connected to one port of the intermediate relay coil. The other port of the intermediate relay coil is connected to the negative terminal of the load end of the second air switch through a cable to form a detection circuit. The first and second cores of the cable at the other end are connected to the power connection port of the junction box, and the third core is connected to the detection connection port of the junction box.

[0012] The beneficial effects of this utility model are: The detection component of this invention can effectively detect the overflow of material in the hopper and trigger an audible and visual alarm to serve as an alarm reminder.

[0013] This invention can detect material blockage in the hopper and promptly stop the belt conveyor system when blockage occurs, effectively preventing hopper overflow accidents and thus avoiding unplanned shutdowns caused by hopper overflow, improving the operating rate of the production equipment. At the same time, it can effectively prevent environmental pollution caused by hopper overflow. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the control system for preventing hopper overflow of this utility model; Figure 2 This is a schematic diagram of the detection component structure of this utility model; Figure 3 This is the circuit schematic diagram of this utility model; In the diagram, 1. First belt, 2. Audible and visual alarm, 3. Detection component, 31. Fork body, 32. Fork body base, 33. Locking nut, 34. Junction box, 35. Material baffle, 4. Hopper, 5. Second belt, 6. First belt control power supply, 7. AC / DC power conversion module, 8. Intermediate relay, 81. Normally open contact, 82. Normally closed contact, 9. First belt control system, 10. First air switch, 11. Second air switch. Detailed Implementation

[0015] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art will understand the specific meaning of the above terms in this invention according to the specific circumstances. Example 1

[0017] like Figure 2 and 3 As shown, the detection component for preventing hopper overflow of this utility model includes a fork body 31, a fork body base 32, a locking nut 33, a junction box 34, a baffle plate 35, and an audible and visual alarm 2; the fork body 31 and the junction box 34 are connected through the fork body base 32. The outer wall of the fork body base 32 is provided with threads, and the fork body base 32 passes through the hopper 4 and is fixed to the hopper wall by the locking nut 33; the junction box 34 is connected to an intermediate relay 8, and the normally open contact 81 of the intermediate relay 8 is connected to the audible and visual alarm 2.

[0018] The baffle plate 35 is fixed to the inner wall of the hopper 4 by welding or other means. The fixed position is directly above the fork body 31. The length of the baffle plate 35 is slightly greater than the length of the fork body 31, which can effectively cover the fork body 31 to prevent the detection component 3 from being triggered to start erroneously when the material falls from the first belt 1. In addition, the baffle plate 35 should not be installed close to the fork body 31. There should be a gap of not less than 20mm between the two to prevent the baffle plate 35 from loosening, falling off or deforming and contacting the fork body (31) to trigger the detection component 3 to start erroneously. At the same time, the installation position of the fork body 31 and the baffle plate 35 should avoid the drop point of the first belt 1 to avoid the impact of the material on the baffle plate 35.

[0019] The detection component 3 is set at the upper part of the hopper 4 in a position that is easy for personnel to maintain. After the detection component 3 is fixed, the fork body 31 is horizontal in the axial direction, and the two parallel surfaces of the fork body 31 are vertical, so as to prevent dust from accumulating on the plane of the fork body 31 and triggering the detection component 3 to start falsely.

[0020] Under normal circumstances, the material in hopper 4 falls normally and will not accumulate in hopper 4. The material will not come into contact with the fork body 31. When the fork body 31 is not disturbed by the material, it will continue to vibrate at its inherent mechanical resonance frequency. When material accumulates in hopper 4 and the accumulation height reaches the point where the material comes into contact with the fork body 31, the material will have a damping effect on the vibration of the fork body 31, causing the resonance frequency and amplitude of the fork body 31 to decrease. When the resonance frequency and amplitude decrease to the threshold, the coil of the intermediate relay 8 is energized, the normally open contact 81 of the intermediate relay 8 is closed, the audible and visual alarm 2 is powered on and emits an audible and visual alarm to remind personnel to deal with it in time. Example 2

[0021] This embodiment protects a control system for preventing hopper overflow, which includes the hopper overflow detection component of Embodiment 1.

[0022] like Figures 1 to 3 As shown, the control system of this embodiment includes a first belt 1, a second belt 5, a first air switch 10, a second air switch 11, a first belt control system 9, and a first belt control power supply 6.

[0023] The hopper 4 is positioned between the first belt 1 and the second belt 5 to transfer the material conveyed by the first belt 1 to the second belt 5 (this structure is a conventional structure, and the positional relationship between the hopper 4 and the first belt 1 and the second belt 5 will not be described in detail in this embodiment), and to prevent the hopper overflow detection component from detecting the overflow of material in the hopper 4.

[0024] Both the AC / DC power conversion module 7 and the intermediate relay 8 are installed in the first belt distribution cabinet. The AC / DC power conversion module 7 is connected to the first belt control power supply 6 through the first air switch 10, converting 220V AC power to 24V DC power. The normally open contact 81 of the intermediate relay 8 is connected in series with the audible and visual alarm 2 and then connected to the L and N terminals of the first belt control system 9. The normally closed contact 82 of the intermediate relay 8 is connected in series between the first belt control system 9 and the L terminal. A three-core cable is laid between the first belt distribution cabinet and the junction box 34 of the detection component 3. The first and second cores of the end cable are connected to the load end of the second air switch 11. The power input end of the second air switch 11 is connected to the 24V terminal of the AC / DC power conversion module 7 to supply power to the detection component 3. The third core of the distribution cabinet end cable is connected to one port of the coil of the intermediate relay 8. The other port of the coil of the intermediate relay 8 is connected to the negative terminal of the load end of the second air switch 11 through a cable to form a detection circuit. The first and second cores of the other end of the cable are connected to the power connection port of the junction box 34, and the third core is connected to the detection connection port of the junction box 33.

[0025] Under normal circumstances, the material on the first belt 1 enters the second belt 5 directly through the hopper 4. The material will not accumulate in the hopper 4 and will not come into contact with the fork 31. When the fork 31 is not disturbed by the material, it will vibrate continuously at its inherent mechanical resonance frequency. When material accumulates in the hopper 4 and the accumulation height reaches the point where the material comes into contact with the fork 31, the material will have a damping effect on the vibration of the fork 31, causing the resonance frequency and amplitude of the fork 31 to decrease. When the resonance frequency and amplitude decrease to the threshold, the coil of the intermediate relay 8 is energized, the normally open contact 81 of the intermediate relay 8 closes, the audible and visual alarm 2 is powered on and emits an audible and visual alarm, and at the same time the normally closed contact 82 is opened, the first belt control system 9 loses power, and the first belt 1 stops.

[0026] Demonstration of the working process of the control system of this invention: During the material transfer process, when the material continuously accumulates in the hopper 4 and comes into contact with the fork body 31, the detection component 3 sends an on / off signal, the coil of the intermediate relay 8 is turned on, the normally closed contact 82 connected in series with the first belt control system 9 is turned off, the first belt control system 9 loses power, the first belt 1 stops, and at the same time the normally open contact 81 closes, triggering the audible and visual alarm 2 to remind the operator to handle the situation in time.

[0027] This invention can issue an alarm before the hopper 4 overflows and stop the first belt 1, effectively preventing the hopper 4 from overflowing. After receiving the alarm information from the audible and visual alarm 2, it can promptly clear the hopper 4, effectively preventing the production equipment from shutting down due to overflow.

[0028] The fork body 31, fork body base 32 and junction box 34 of this application are tuning fork switches.

[0029] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A detection component for preventing hopper overflow, characterized in that, It includes a fork body (31), a fork body base (32), a locking nut (33), a junction box (34), a baffle plate (35), and an audible and visual alarm (2); the fork body (31) and the junction box (34) are connected by the fork body base (32), the outer wall of the fork body base (32) is threaded, the fork body base (32) passes through the hopper wall of the hopper (4) and is fixed on the hopper (4) by the locking nut (33); the junction box (34) is connected to an intermediate relay (8), and the normally open contact of the intermediate relay (8) is connected to the audible and visual alarm.

2. The detection component for preventing hopper overflow according to claim 1, characterized in that, The baffle plate (35) is fixed on the inner wall of the hopper (4) and is installed directly above the fork body (31) and away from the drop point of the hopper.

3. The detection component for preventing hopper overflow according to claim 1, characterized in that, The detection component (3) is fixed on the hopper wall of the hopper (4). After fixing, the axial direction of the fork (31) is horizontal, and the two parallel surfaces of the fork (31) are vertical.

4. The detection component for preventing hopper overflow according to claim 1, characterized in that, The baffle plate (35) is longer than the fork body (31) and a gap is maintained between it and the fork body (31).

5. A control system for preventing hopper overflow, characterized in that, The device includes a detection component (3) for preventing hopper overflow as described in any one of claims 1 to 4, a first belt (1), a second belt (5), and a hopper (4); the hopper (4) is disposed between the first belt (1) and the second belt (5).

6. The control system for preventing hopper overflow according to claim 5, characterized in that, It also includes an AC / DC power conversion module (7), a first air switch (10), a second air switch (11), a first belt control system (9), and a first belt control power supply (6); the AC / DC power conversion module (7) is connected to the first belt control power supply (6) through the first air switch (10), the normally open contact (81) of the intermediate relay (8) is connected in series with the audible and visual alarm (2) and then connected to the L and N terminals of the first belt control system (9), and the normally closed contact (82) of the intermediate relay (8) is connected in series between the first belt control system (9) and the L terminal.

7. The control system for preventing hopper overflow according to claim 6, characterized in that, A three-core cable is laid between the junction box (34) of the first belt distribution cabinet and the detection component (3). The first and second cores of the cable at the distribution cabinet end are connected to the load end of the second air switch (11). The power input end of the second air switch (11) is connected to the 24V terminal of the AC / DC power conversion module (7) to supply power to the detection component (3). The third core of the cable at the distribution cabinet end is connected to one port of the coil of the intermediate relay (8). The other port of the coil of the intermediate relay (8) is connected to the negative terminal of the load end of the second air switch (11) through a cable to form a detection circuit. The first and second cores of the cable at the other end are connected to the power connection port of the junction box (34), and the third core is connected to the detection connection port of the junction box (34).

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