Belt conveyor early warning device

Abstract

The utility model discloses an early warning device for a belt conveyor. The early warning device comprises a device control core single-chip microcomputer and a sensor group connected with the device control core single-chip microcomputer, the sensor group comprises a speed sensor, a temperature sensor, a smoke sensor, a coal piling sensor, a tearing sensor and a tension sensor; the device further comprises a ball valve, an emergency stop switch and a deviation switch. The device further comprises a fault alarm device connected with the control core single-chip microcomputer of the device. The fault alarm device comprises a sound alarm and a liquid crystal Chinese character display alarm which are connected with the control core single-chip microcomputer. According to the utility model, through the arrangement of the plurality of groups of sensors, various conditions such as deviation, low speed, temperature, smog, sudden stop, tearing and tensile force can be detected, meanwhile, sound alarm is given out through the sound alarm, character alarm is given out through the Chinese character display alarm, and the device is simple and practical.

Description

Technical Field

[0001] The utility model relates to the technical field of belt conveyor control, in particular to an early warning device for a belt conveyor. Background Art

[0002] With the rapid development of the national economic construction, people's demand for energy is getting higher and higher, and coal transportation plays a key role; the belt conveyor is one of the important equipment in the coal transportation process. Due to the complex coal transportation sites, large coal volume and many impurities, many problems will occur during the use of the conveyor, such as overspeed, deviation, high temperature, tearing, etc. It requires patrol personnel to conduct patrol inspections. If the patrol personnel cannot take measures in time, it is very easy to cause damage to the conveyor, bringing huge economic losses to the production unit. However, manual patrol is inaccurate and labor-consuming, and cannot meet the use requirements. Content of the Utility Model

[0003] To solve the above technical problems, the technical solution provided by the utility model is: an early warning device for a belt conveyor, including a single-chip microcomputer as the device control core and a sensor group connected to the device control core single-chip microcomputer; the sensor group includes a speed sensor, a temperature sensor, a smoke sensor, a coal accumulation sensor, a tearing sensor and a tension sensor; it also includes a ball valve, an emergency stop switch and a deviation switch; it also includes a fault alarm device connected to the device control core single-chip microcomputer, and the fault alarm device includes a sound alarm and a liquid crystal Chinese character display alarm connected to the control core single-chip microcomputer.

[0004] The advantages of the utility model compared with the prior art are: through the setting of multiple groups of sensors, the utility model can detect various situations such as deviation, low speed, temperature, smoke, emergency stop, tearing, and tension, and at the same time, it issues a sound alarm through the sound alarm and a text alarm through the Chinese character display alarm, which is simple and practical. Description of the Drawings

[0005] Figure 1 It is a connection schematic diagram of an early warning device for a belt conveyor of the utility model.

[0006] Figure 2 It is a connection schematic diagram of each sensor and the device control core single-chip microcomputer in an early warning device for a belt conveyor of the utility model. Detailed Embodiment

[0007] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model usually described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0008] In the description of the embodiments of the present utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0009] In addition, if terms such as "horizontal", "vertical", "hanging" are used, it does not mean that the component is required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0010] In the description of the embodiments of the present utility model, "a plurality of" represents at least two.

[0011] In the description of the embodiments of the present utility model, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", "connected" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0012] Embodiment:

[0013] Combined with the attached Figure 1, this embodiment discloses a warning device for a belt conveyor, including a single-chip microcomputer as the device control core and a sensor group connected to the single-chip microcomputer of the device control core; the sensor group includes a speed sensor, a temperature sensor, a smoke sensor, a coal accumulation sensor, a tear sensor, and a tension sensor; the fault alarm device also includes a ball valve, an emergency stop switch, and a deviation switch; it also includes a fault alarm device connected to the single-chip microcomputer of the device control core, and the fault alarm device includes a sound alarm and a liquid crystal Chinese display alarm connected to the control core single-chip microcomputer;

[0014] The power supply +, signal output K, and power supply - of the wiring terminal of the ball valve are respectively and correspondingly connected to the intrinsically safe wiring terminal power supply +, ball valve output K, and power supply - of the single-chip microcomputer of the device control core;

[0015] The power supply +, signal output K, and power supply - of the wiring terminal of the speed sensor are respectively and correspondingly connected to the intrinsically safe wiring terminal power supply +, speed SD, and power supply - of the single-chip microcomputer of the device control core;

[0016] The power supply +, signal output K, and power supply - of the wiring terminal of the temperature sensor are respectively and correspondingly connected to the intrinsically safe wiring terminal power supply +, temperature WD, and power supply - of the single-chip microcomputer of the device control core;

[0017] The power supply +, signal output K, and power supply - of the wiring terminal of the smoke sensor are respectively and correspondingly connected to the intrinsically safe wiring terminal power supply +, smoke YW, and power supply - of the single-chip microcomputer of the device control core;

[0018] The power supply +, signal output K, and power supply - of the wiring terminal of the coal accumulation sensor are respectively and correspondingly connected to the intrinsically safe wiring terminal power supply +, coal accumulation DM, and power supply - of the single-chip microcomputer of the device control core;

[0019] The power supply +, signal output K, and power supply - of the wiring terminal of the tear sensor are respectively and correspondingly connected to the intrinsically safe wiring terminal power supply +, longitudinal tear input SL, and power supply - of the single-chip microcomputer of the device control core;

[0020] The power supply +, signal output K, and power supply - of the wiring terminal of the tension sensor are respectively and correspondingly connected to the intrinsically safe wiring terminal power supply +, tension sensor ADin, and power supply - of the single-chip microcomputer of the device control core.

[0021] The number of the emergency stop switches is multiple, and the multiple emergency stop switches are connected in parallel. At the same time, the power supply +, signal output K, and power supply - of the wiring terminal of the emergency stop switch are respectively and correspondingly connected to the intrinsically safe wiring terminal power supply +, emergency stop JT, and power supply - of the single-chip microcomputer of the device control core.

[0022] The number of the deviation switches is multiple, and the multiple deviation switches are connected in parallel. At the same time, the power supply +, signal output K, and power supply - of the wiring terminals of the deviation switches are connected to the intrinsically safe wiring terminals of the power supply +, deviation PP, and power supply - of the device control core single-chip microcomputer one by one.

[0023] The device control core single-chip microcomputer and each sensor are connected by a mining flame-retardant rubber-sheathed cable; the connection of each sensor uses an aviation plug.

[0024] During specific implementation, the speed sensor detects the current speed of the belt conveyor. When the speed of the belt conveyor is lower than 70% of Ve (Ve is the rated belt speed), it is determined that the belt conveyor has a low-speed slip situation; this device emits an alarm sound of "low-speed slip alarm" and displays the warning words of "low-speed slip alarm" and the current speed value; when the speed of the belt conveyor is higher than 110% of Ve (Ve is the rated belt speed), it is determined that the belt conveyor has an overspeed slip situation and needs to give an alarm. This device emits an alarm sound of "overspeed slip protection" and displays the warning words of "overspeed slip protection", and at the same time stops the operation of the belt conveyor;

[0025] When the touch rod of the coal accumulation sensor continuously detects that the coal level exceeds the predetermined position and the deflection angle of the touch rod reaches 20 ± 3° (the action force of its touch rod ≤ 9.8N); it is determined that the belt conveyor has a coal accumulation situation and needs to give an alarm. This device emits an alarm sound of "coal accumulation alarm" and displays the warning words of "coal accumulation alarm", and at the same time stops the operation of the belt conveyor.

[0026] When the probe rod of the deviation sensor detects (when the deflection angle of the probe rod reaches 30° ± 3°) that the running belt conveyor is deviated (the action force of the probe rod is 20 - 100N); it is determined that the belt conveyor has a deviation situation and needs to give an alarm. This device emits an alarm sound of "deviation alarm" and displays the warning words of "deviation alarm", and at the same time stops the operation of the belt conveyor.

[0027] When the temperature measured by the temperature measuring head of the temperature sensor at the temperature measuring point exceeds the set value, it is determined that the belt conveyor has an over-temperature situation and needs to give an alarm; at the same time, stop the operation of the belt conveyor, open the sprinkler valve of the belt conveyor. This device emits an alarm sound of "over-temperature protection, start sprinkler device" and displays the corresponding warning words, and at the same time stops the operation of the belt conveyor.

[0028] When the smoke sensor detects that the smoke concentration in the measured environment > 0.1mg / m 3 When, it is determined that the belt conveyor has a smoke protection situation and needs to give an alarm. This device emits an alarm sound of "smoke protection, start sprinkler device" and displays the corresponding warning words, and at the same time stops the operation of the belt conveyor, opens the sprinkler valve of the belt conveyor, and at the same time stops the operation of the belt conveyor.

[0029] When the tearing sensor detects a longitudinal tear in the running belt conveyor, it is determined that a longitudinal tear has occurred in this belt conveyor. The device emits an alarm sound of "longitudinal tear protection" and displays the corresponding warning words. An alarm is required, and at the same time, the operation of the belt conveyor is stopped.

[0030] For the running conveyor, when the emergency stop switch is pulled and locked, the device emits an alarm sound of "emergency stop lock" and displays the corresponding warning words, stops the operation of the belt conveyor, and an alarm is required at the same time.

[0031] The above describes the present utility model and its implementation manners. Such a description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and, without departing from the purpose of the creation of the present utility model, design similar structural modes and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present utility model.

Claims

1. A warning device for a belt conveyor, characterized in that, It includes a single-chip microcomputer for device control core and a sensor group connected to the single-chip microcomputer for device control core; the sensor group includes a speed sensor, a temperature sensor, a smoke sensor, a coal accumulation sensor, a tearing sensor, and a tension sensor; it also includes a ball valve, an emergency stop switch, and a deviation switch; it further includes a fault alarm device connected to the single-chip microcomputer for device control core, and the fault alarm device includes a sound alarm and a liquid crystal Chinese character display alarm connected to the control core single-chip microcomputer; The power supply +, signal output K, and power supply - of the wiring terminal of the ball valve are correspondingly connected to the intrinsically safe wiring terminal power supply +, ball valve output K, and power supply - of the single-chip microcomputer for device control core one by one; The power supply +, signal output K, and power supply - of the wiring terminal of the speed sensor are correspondingly connected to the intrinsically safe wiring terminal power supply +, speed SD, and power supply - of the single-chip microcomputer for device control core one by one; The power supply +, signal output K, and power supply - of the wiring terminal of the temperature sensor are correspondingly connected to the intrinsically safe wiring terminal power supply +, temperature WD, and power supply - of the single-chip microcomputer for device control core one by one; The power supply +, signal output K, and power supply - of the wiring terminal of the smoke sensor are correspondingly connected to the intrinsically safe wiring terminal power supply +, smoke YW, and power supply - of the single-chip microcomputer for device control core one by one; The power supply +, signal output K, and power supply - of the wiring terminal of the coal accumulation sensor are correspondingly connected to the intrinsically safe wiring terminal power supply +, coal accumulation DM, and power supply - of the single-chip microcomputer for device control core one by one; The power supply +, signal output K, and power supply - of the wiring terminal of the tearing sensor are correspondingly connected to the intrinsically safe wiring terminal power supply +, longitudinal tearing input SL, and power supply - of the single-chip microcomputer for device control core one by one; The power supply +, signal output K, and power supply - of the wiring terminal of the tension sensor are correspondingly connected to the intrinsically safe wiring terminal power supply +, tension sensor ADin, and power supply - of the single-chip microcomputer for device control core one by one.

2. The warning device for a belt conveyor according to claim 1, wherein, The number of the emergency stop switches is multiple, and the multiple emergency stop switches are connected in parallel. At the same time, the power supply +, signal output K, and power supply - of the wiring terminal of the emergency stop switch are correspondingly connected to the intrinsically safe wiring terminal power supply +, emergency stop JT, and power supply - of the single-chip microcomputer for device control core one by one.

3. The warning device for a belt conveyor according to claim 1, characterized in that, The number of the deviation switches is multiple, and the multiple deviation switches are connected in parallel. At the same time, the power supply +, signal output K, and power supply - of the wiring terminal of the deviation switch are correspondingly connected to the intrinsically safe wiring terminal power supply +, deviation PP, and power supply - of the single-chip microcomputer for device control core one by one.

4. The warning device for a belt conveyor according to claim 1, wherein The single-chip microcomputer for device control core and each sensor are connected by a mining flame-retardant rubber sleeve cable; the connection of each sensor uses an aviation plug.

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