Over-temperature watering device of belt conveyor

Abstract

The utility model relates to an overtemperature watering device of a belt conveyor, and belongs to the technical field of safety protection equipment of belt conveyors. According to the technical scheme, an infrared temperature sensor (15) is in signal connection with the input end of a relay (16), and the output end of the relay (16) is in signal connection with a normally-closed electromagnetic valve (7) and an audible and visual alarm (17). The beneficial effects of the utility model are that real-time monitoring is carried out through the infrared temperature sensor, when overtemperature is detected, the audible and visual alarm is triggered to give an alarm, and meanwhile, the normally closed solenoid valve is triggered to control watering and cooling, so that fire hazards are eliminated; the device is suitable for different types of belt conveyors through kidney-shaped holes, the angle of an infrared temperature sensor and the angle of a nozzle support can be adjusted to be suitable for different parts of the belt conveyors, all-directional monitoring protection is achieved, the structure is simple, the manufacturing cost is low, alarming is timely, and the applicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to an overheating sprinkler device for belt conveyors, belonging to the technical field of safety protection equipment for belt conveyors. Background Technology

[0002] Belt conveyors are widely used in industries such as mining, ports, railway stations, and freight yards. During operation, belt conveyors inevitably generate heat due to belt friction. In particular, abnormal situations such as slippage of the head pulley, malfunction of idlers, powder accumulation, and scraping by foreign objects often lead to frictional heat accumulation. As the belt temperature rises, it can easily cause a fire hazard. The State Administration of Mine Safety and the Emergency Management Department have explicitly stipulated that underground belt conveyors must be equipped with automatic temperature and overheat protection devices.

[0003] Existing automatic overheating sprinkler systems for belt conveyors mainly include the following: The overheating sprinkler system researched by Shaanxi Huadian Yuheng Coal and Power Co., Ltd. is mainly installed on top of the belt and uses a motor to control a rotating plate for water spraying; the overheating sprinkler system at the head of the belt conveyor researched by Inner Mongolia Mengtai Bulian Gou Coal Industry Co., Ltd. detects the belt temperature at the skip area and sprays water from a water pipe installed below the head; and the real-time monitoring and automatic fire extinguishing system for belt conveyors developed by Xuzhou Zhongkuang Haisende Safety Technology Co., Ltd., etc., is installed near the head and controls the sprinkler heads to spray water by detecting the temperature of the head pulley bearing seat and smoke. These protective devices are generally installed on top of the belt. Because the belt carries materials, it is impossible to measure belt temperature changes accurately and in a timely manner, and the location of the sprinkler cannot directly cool the belt, making improvement necessary. Summary of the Invention

[0004] The purpose of this invention is to provide a high-temperature spraying device for belt conveyors. It uses an infrared temperature sensor to monitor the temperature of easily overheated and flammable parts of the belt, such as the head pulley, tail pulley, and material accumulation points in the middle of the belt, in real time via non-contact methods. When overheating is detected, an audible and visual alarm is triggered, and simultaneously, a normally closed solenoid valve is activated to control water spraying for cooling, eliminating fire hazards. Furthermore, the device features a slotted design suitable for different types of belt conveyors, and the infrared temperature sensor and spray pipe support are adjustable to suit different parts of the conveyor, achieving comprehensive monitoring and protection. It has a simple structure, low cost, timely alarm, and improved applicability, thus solving the aforementioned problems in the prior art.

[0005] The technical solution of this utility model is: an overheating sprinkler device for a belt conveyor, comprising a fixed base, a central movable base, a water inlet valve, an electric contact pressure gauge, a normally closed solenoid valve, a water spray pipe, a sprinkler head, a control relay, an infrared temperature sensor, a relay, and an audible and visual alarm. The fixed base is fixed to the belt conveyor frame. There are two fixed bases, respectively located on both sides of the central movable base. The fixed bases are connected to the central movable base via oblong holes and oblong hole adjusting bolts. The water inlet valve is mounted on the movable base via a water pipe bracket. The input end of the water inlet valve is connected to the external water network, and the output end is connected to the electric contact pressure gauge. The electric contact pressure gauge is connected to the normally closed solenoid valve, which is connected to the water spray pipe. The sprinkler head is mounted on the water spray pipe. The control relay, infrared temperature sensor, relay, and audible and visual alarm are mounted on the movable base. The electric contact pressure gauge is connected to the control relay signal, and the control relay signal is connected to the belt conveyor control signal. The infrared temperature sensor is connected to the relay input signal, and the relay output is connected to the normally closed solenoid valve and the audible and visual alarm signals, respectively.

[0006] The fixed base is fixed to the belt conveyor frame by bolts and reinforcing ribs, and is installed on the conveyor head wheel, tail wheel and middle parts that are prone to friction, heat accumulation and fire.

[0007] It also includes a sensor bracket, in which the infrared temperature sensor is installed. The sensor bracket is connected to the infrared temperature sensor via a rotatable shaft, which can be adjusted vertically by 180°.

[0008] It also includes a nozzle bracket, the water spray pipe is fixed to the movable base near the monitoring part by the nozzle bracket, the front part of the nozzle bracket is a ring-shaped clip, the normally closed solenoid valve is connected to the water spray pipe through a corrugated hose, and the water spray pipe bracket and the corrugated hose are matched to adjust the water spray angle.

[0009] There are four sprinkler heads, which are evenly arranged on the water pipe.

[0010] The beneficial effects of this utility model are: it uses an infrared temperature sensor to monitor the temperature of easily heated and ignited parts of the belt, such as the head pulley, tail pulley, and material accumulation point in the middle of the belt, in real time without contact. When an overheating is detected, an audible and visual alarm is triggered, and at the same time, a normally closed solenoid valve is triggered to control water spraying for cooling, eliminating fire hazards. Furthermore, the oblong hole is suitable for different models of belt conveyors, and the infrared temperature sensor and water spray pipe support are adjustable to different parts of the belt conveyor, achieving all-round monitoring and protection. The structure is simple, the cost is low, the alarm is timely, and the applicability of the device is improved. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2This is the circuit schematic diagram of this utility model;

[0013] In the diagram: 1. Fixed base; 2. Reinforcing rib; 3. Central movable base; 4. Waist-shaped hole adjusting bolt; 5. Water inlet valve; 6. Electrical contact pressure gauge; 7. Normally closed solenoid valve; 8. Corrugated hose; 9. Sprinkler pipe; 10. Sprinkler head; 11. Sprinkler head bracket; 12. Water pipe bracket; 13. Control relay; 14. Sensor bracket; 15. Infrared temperature sensor; 16. Relay; 17. Audible and visual alarm. Detailed Implementation

[0014] To make the purpose, technical solution, and advantages of this utility model clearer, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described implementation cases are only a small part of this utility model, not all of them. All other implementation cases obtained by those skilled in the art based on the implementation cases of this utility model without creative effort are within the protection scope of this utility model.

[0015] A high-temperature sprinkler system for a belt conveyor includes a fixed base 1, a central movable base 3, a water inlet valve 5, an electrical contact pressure gauge 6, a normally closed solenoid valve 7, a water spray pipe 9, a sprinkler head 10, a control relay 13, an infrared temperature sensor 15, a relay 16, and an audible and visual alarm 17. The fixed base 1 is fixed to the belt conveyor frame. There are two fixed bases 1, respectively located on both sides of the central movable base 3. The fixed base 1 is connected to the central movable base 3 via a slotted hole and a slotted hole adjusting bolt 4. The water inlet valve 5 is mounted on the movable base 3 via a water pipe bracket 12. The input end of the water inlet valve 5 is connected to the external... The water supply pipeline is connected, and the output end is connected to the electric contact pressure gauge 6. The electric contact pressure gauge 6 is connected to the normally closed solenoid valve 7. The normally closed solenoid valve 7 is connected to the water spray pipe 9. The sprinkler head 10 is installed on the water spray pipe 9. The control relay 13, infrared temperature sensor 15, relay 16 and audible and visual alarm 17 are installed on the movable base 3. The electric contact pressure gauge 6 is connected to the control relay 13 signal, and the control relay 13 signal is connected to the belt conveyor control signal. The infrared temperature sensor 15 is connected to the input signal of relay 16, and the output end of relay 16 is connected to the normally closed solenoid valve 7 and the audible and visual alarm 17 respectively.

[0016] The fixed base 1 is fixed to the belt conveyor frame by bolts and reinforcing ribs 2, and is installed on the conveyor head wheel, tail wheel and middle parts that are prone to friction, heat accumulation and fire.

[0017] It also includes a sensor bracket 14, and the infrared temperature sensor 15 is installed inside the sensor bracket 14. The sensor bracket 14 is connected to the infrared temperature sensor 15 through a rotatable shaft, and the rotation adjustment angle of the rotatable shaft is 180° up and down.

[0018] It also includes a nozzle bracket 11, the water spray pipe 9 is fixed to the movable base 3 near the monitoring part through the nozzle bracket 11, the front part of the nozzle bracket 11 is an annular bracket, the normally closed solenoid valve 7 is connected to the water spray pipe 9 through the corrugated hose 8, and the water spray pipe bracket 11 and the corrugated hose 8 are matched to adjust the water spray angle.

[0019] There are four sprinkler heads 10, which are evenly arranged on the water pipe 9.

[0020] In practical applications, the working process of this utility model is as follows:

[0021] Before the belt conveyor starts, the inlet valve 5 is connected to the external water supply pipeline, and the device is powered on. When the inlet valve 5 is opened, the pressure gauge 6 displays a pressure of 0.3-0.5 MPa, indicating no system fault. The control relay 13 is energized, the device operates normally, and the belt can be started. During belt operation, the infrared temperature sensor 15 monitors the belt temperature in real time. When the temperature reaches the warning value, the relay 16 is energized, and the audible and visual alarm 17 activates, triggering an automatic alarm. Simultaneously, the normally closed solenoid valve 7 receives a signal and opens, allowing water from the external network pipeline to flow through the inlet valve 5, pressure gauge 6, normally closed solenoid valve 7, corrugated hose 8, and spray pipe 9, spraying out from the sprinkler head 10 to cool the belt and eliminate fire hazards. When the temperature drops below the warning value, the relay 16 controls the normally closed solenoid valve 7 to close, and the audible and visual alarm 17 to shut off, ending the water spraying process. If the external network is affected during water spraying, resulting in insufficient water supply, the control relay 13 disconnects, and the belt system alarms.

[0022] An embodiment of this utility model is as follows:

[0023] The length of the fixed base 1 is 400mm, the width is 350mm, and the thickness is 10mm;

[0024] The reinforcing rib is a ∠5 angle steel, 350mm in length;

[0025] The length of the central movable base 3 is 600mm, the width is 300mm, and the thickness is 10mm;

[0026] 14mm x 80mm oblong hole adjusting bolt;

[0027] Inlet valve Q911F-25P

[0028] YNXC-100 Electrical Contact Pressure Gauge

[0029] Normally closed solenoid valve DC24V*2W200-20 DN25

[0030] Corrugated flexible hose SP-BSG-25 (flame retardant)

[0031] The water spray pipe is a galvanized steel pipe, DN25.

[0032] The control relay and the relay model are GRT8-A / B;

[0033] Coal Safety Infrared 15 Type Infrared Temperature Sensor

[0034] YS-BBJ-8W explosion-proof audible and visual alarm.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-temperature water spraying device for a conveyor belt, characterized in that: The system includes a fixed base (1), a central movable base (3), a water inlet valve (5), an electrical contact pressure gauge (6), a normally closed solenoid valve (7), a water spray pipe (9), a sprinkler head (10), a control relay (13), an infrared temperature sensor (15), a relay (16), and an audible and visual alarm (17). The fixed base (1) is fixed to the belt conveyor frame. There are two fixed bases (1), which are respectively set on both sides of the central movable base (3). The fixed base (1) is connected to the central movable base (3) through a waist-shaped hole and a waist-shaped hole adjusting bolt (4). The water inlet valve (5) is installed on the movable base (3) through a water pipe bracket (12). The input end of the water inlet valve (5) is connected to the external water network pipeline. The output end is connected to the electric contact pressure gauge (6), the electric contact pressure gauge (6) is connected to the normally closed solenoid valve (7), the normally closed solenoid valve (7) is connected to the water spray pipe (9), and the sprinkler head (10) is set on the water spray pipe (9); the control relay (13), infrared temperature sensor (15), relay (16) and audible and visual alarm (17) are installed on the movable base (3), the electric contact pressure gauge (6) is connected to the control relay (13) signal, the control relay (13) signal is connected to the belt conveyor control signal; the infrared temperature sensor (15) is connected to the input end of the relay (16) signal, and the output end of the relay (16) is connected to the normally closed solenoid valve (7) and the audible and visual alarm (17) signal respectively.

2. The high-temperature water spraying device for a conveyor belt according to claim 1, characterized in that: The fixed base (1) is fixed to the belt conveyor frame by bolts and reinforcing ribs (2) and is installed on the conveyor head wheel, tail wheel and middle part that is prone to friction, heat storage and fire.

3. The high-temperature water spraying device for a conveyor belt according to claim 1, characterized in that: It also includes a sensor bracket (14), the infrared temperature sensor (15) is installed inside the sensor bracket (14), the sensor bracket (14) is connected to the infrared temperature sensor (15) through a rotatable shaft, and the rotation adjustment angle of the rotatable shaft is 180° up and down.

4. The high-temperature water spraying device for a conveyor belt according to claim 1, characterized in that: It also includes a nozzle bracket (11), the water pipe (9) is fixed to the movable base (3) near the monitoring part by the nozzle bracket (11), the front part of the nozzle bracket (11) is an annular clip, the normally closed solenoid valve (7) is connected to the water pipe (9) by the corrugated hose (8), and the nozzle bracket (11) and the corrugated hose (8) are matched to adjust the water spray angle.

5. The high-temperature water spraying device for a conveyor belt according to claim 1, characterized in that: There are four sprinkler heads (10), which are evenly arranged on the water pipe (9).

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