Crusher safety running device

Abstract

The utility model relates to calcium carbide crushing device technical field, is a kind of safety operation device of crusher, it includes coarse crusher, fine crusher, belt conveyor, coarse crusher upper is equipped with feed inlet, first temperature detection equipment capable of detecting material temperature is installed on the upper of feed inlet, coarse crusher outlet is equipped with belt conveyor below, and belt conveyor other end is conveyed to the upper of fine crusher feed inlet.The utility model is reasonable and compact in structure, convenient to use, the temperature of calcium carbide raw material can be detected by setting first temperature detection, temperature threshold is set by control unit, when detecting temperature exceeds threshold, stop belt conveyor, stop feeding and alarm, thereby reduce the risk that calcium carbide temperature is high and causes belt conveyor to fire, by collecting fine crusher current parameter, control unit carries out single fine crusher current parameter comparison, or two fine crusher current parameter comparison, detects fine crusher operating condition.

Description

Technical Field

[0001] This utility model relates to the technical field of calcium carbide crushing equipment and is a safety operation device for crushers. Background Technology

[0002] The raw material for the acetylene workshop is calcium carbide transported by the calcium carbide company. Due to the short transportation distance (approximately 800m), there is a phenomenon where calcium carbide that has not been fully cooled (temperature ≥100℃) is unloaded into the crushing plant of the acetylene workshop. The high-temperature calcium carbide passes through the coarse crusher, belt conveyor #1, fine crushers A / B, belt conveyor #2, and belt conveyor #3 before entering the silo for storage. As an important piece of equipment for calcium carbide transportation, the operating status of the belt conveyor directly affects production efficiency and safety. In order to ensure the stable operation of the belt conveyor, monitoring the temperature of the conveyor belt is particularly important.

[0003] The acetylene workshop uses conveyor belts to transport high-temperature calcium carbide for extended periods, posing a fire risk. Currently, temperature monitoring of the conveyor belts primarily relies on manual handheld thermal imagers for periodic measurements (every 2 hours). In the current acetylene production environment, the following problems exist: First, manual operation is inefficient, requiring staff to hold the equipment and measure each item along the belt conveyor, which is not only time-consuming and labor-intensive, but also prone to measurement errors due to human factors.

[0004] Secondly, although thermal imagers can visually display temperature distribution, they often struggle to accurately capture temperature anomalies in complex and ever-changing industrial environments, especially when anomalies appear rapidly or over a small area, making it difficult for manual monitoring to respond in a timely manner.

[0005] In addition, manual handheld temperature measurement also faces problems such as harsh working environment and safety hazards for operators, which further limits its application in temperature monitoring of belt conveyors.

[0006] Secondly, the calcium carbide raw material provides calcium carbide particles with a size of about 300mm. After being crushed by a coarse crusher, the calcium carbide particles with a size of about 200mm are produced. The acetylene workshop then transports calcium carbide particles with a size of 30-80mm to a silo for storage and protection to prevent weathering. During the transportation process, two fine crushers A / B are needed to simultaneously crush the calcium carbide crushed by one coarse crusher into calcium carbide particles with a size of 30-80mm.

[0007] During the simultaneous crushing process of fine crushers A and B, due to the uneven particle size of calcium carbide entering the crushing chambers of fine crushers A and B, large pieces of calcium carbide frequently get stuck in the crushing chambers (5 times / day). There are frequent instances where one fine crusher runs unloaded while the other fine crusher runs normally, making it impossible to detect the problem. After about 2 minutes, the normally running fine crusher is unable to completely crush the calcium carbide crushed by the coarse crusher, causing the calcium carbide to overflow from the belt conveyor.

[0008] After calcium carbide overflows from the belt conveyor, it cannot be transported to the silo for storage according to the established process. Instead, it falls off the belt conveyor and piles up on the ground. During the process of calcium carbide coming into contact with air, the surface of the block calcium carbide reacts with the moisture in the air, causing the block calcium carbide to gradually turn into calcium carbide dust. The gas generation of block calcium carbide is 280L / kg, and the gas generation of calcium carbide dust is 10L / kg, resulting in a waste of about 2 tons of raw materials per instance. Summary of the Invention

[0009] This utility model provides a safety operation device for a crusher, which overcomes the shortcomings of the prior art. It can effectively solve the problem of safety hazards in belt conveyors caused by high temperature of calcium carbide, as well as the problem of waste of raw materials caused by calcium carbide weathering due to the failure to detect the jamming of the fine crusher in time.

[0010] The technical solution of this utility model is achieved through the following measures: a crusher safety operation device, including a coarse crusher, a fine crusher, and a belt conveyor. The coarse crusher is provided with a feed inlet above it, and a first temperature detection device capable of detecting the temperature of the material is installed above the feed inlet. The belt conveyor is provided below the outlet of the coarse crusher, and the other end of the belt conveyor transports the material to the feed inlet of the fine crusher. The temperature detection device is connected to a control unit, and the control unit is connected to the belt conveyor.

[0011] The following are further optimizations and / or improvements to the above-mentioned utility model technical solution: Preferably, a second temperature detection device capable of detecting the material temperature is installed above the belt conveyor.

[0012] Preferably, the first temperature detection device and the second temperature detection device are thermal imaging dual-spectrum network cameras.

[0013] Preferably, after the feed is fed into the feed inlet of the fine crusher, it is divided into two paths to supply two fine crushers. The two fine crushers are respectively connected to the power distribution room. The power distribution room can collect the current signals of the two fine crushers. The power distribution room is connected to the control unit, and the control unit is connected to the coarse crusher.

[0014] Preferably, the control unit is a DCS computer.

[0015] This utility model has a reasonable and compact structure and is easy to use. It can detect the temperature of calcium carbide raw materials by setting a first temperature detector. The temperature threshold is set by the control unit. When the detected temperature exceeds the threshold, the belt conveyor stops and the feeding stops, thereby avoiding the fire risk of the belt conveyor due to the high temperature of calcium carbide. By collecting the current parameters of the fine crusher, the control unit compares the current parameters of a single fine crusher or two fine crushers to detect the operation of the fine crusher. If a fine crusher is stuck, the coarse crusher stops, thereby stopping the feeding and alarming the operators to prevent calcium carbide from falling off the belt conveyor and accumulating on the ground to weather, thus reducing the waste of raw materials. Attached Figure Description

[0016] Appendix Figure 1 This is a front view structural diagram of the coarse crusher according to an embodiment of the present utility model.

[0017] Appendix Figure 2 This is a front view structural diagram of the fine crusher according to an embodiment of the present utility model.

[0018] The codes in the attached diagram are as follows: 1 for coarse crusher, 2 for belt conveyor, 3 for first temperature detection device, 4 for control unit, 5 for second temperature detection device, 6 for power distribution room, and 7 for fine crusher. Detailed Implementation

[0019] This utility model is not limited to the following embodiments, and the specific implementation method can be determined according to the technical solution of this utility model and the actual situation.

[0020] In this utility model, for ease of description, the description of the relative positions of the components is based on the appendix to the specification. Figure 1 The layout is described using a diagrammatic method, such as front, back, top, bottom, left, right, etc. The positional relationships are determined based on the layout direction of the attached diagram in the instruction manual.

[0021] The present invention will be further described below with reference to the embodiments and accompanying drawings: Example 1: As shown in the attached document Figure 1 , 2 As shown, the safety operation device of the crusher includes a coarse crusher 1, a fine crusher, and a belt conveyor 2. The coarse crusher 1 is provided with a feed inlet above it, and a first temperature detection device 3 capable of detecting the temperature of the material is installed above the feed inlet. The belt conveyor 2 is provided below the outlet of the coarse crusher 1, and the other end of the belt conveyor 2 transports the material to the feed inlet of the fine crusher. The temperature detection device is connected to the control unit 4, and the control unit 4 is connected to the belt conveyor 2.

[0022] During operation, an excavator is used to feed calcium carbide raw materials into the feed inlet of the primary crusher 1. The temperature parameters of the calcium carbide are collected by the first temperature detection device 3 and transmitted to the control unit 4. If the surface temperature of the calcium carbide is higher than the set temperature (80 degrees), an alarm will sound 10 times within 10 seconds. The control unit 4 will then sound an alarm and start a countdown. After 60 seconds, the belt conveyor 2 will stop. The 60-second stop is to allow all the material in the primary crusher 1 to come down, so as to avoid calcium carbide blocking the primary crusher 1 when it stops.

[0023] The above-mentioned safety operation devices for the crusher can be further optimized and / or improved according to actual needs: Example 2: As shown in the attached document Figure 1 , 2As shown, a second temperature detection device 5 capable of detecting the temperature of the material is installed above the belt conveyor 2. Since the first temperature detection device 3 detects the surface temperature of calcium carbide, the internal temperature of calcium carbide after crushing will still exceed the limit temperature, posing a safety hazard. Therefore, the second temperature detection device 5 is set to detect the temperature of the crushed calcium carbide to further reduce the risk of fire posed by the high-temperature calcium carbide to the belt conveyor 2. When the first temperature detection device 3 or the second temperature detection device 5 detects a temperature greater than or equal to 80 degrees Celsius, the control unit 4 will alarm 10 times within 10 seconds after the temperature detected by the first temperature detection device 3 reaches the threshold, or the control unit 4 will alarm 5 times within 15 seconds or continuously after the temperature detected by the second temperature detection device 5 reaches the threshold, and a countdown will begin. The belt conveyor 2 will stop after 60 seconds.

[0024] Example 3: As shown in the attached document Figure 1 , 2 As shown, the first temperature detection device 3 and the second temperature detection device 5 are thermal imaging dual-spectrum network cameras. They can achieve video monitoring while automatically measuring temperature, eliminating the need for on-site personnel to manually measure temperatures, reducing labor intensity, and providing more accurate measurements. When anomalies occur rapidly or within a small area, the system uses interlocking control to quickly respond and make a judgment.

[0025] Example 4: As shown in the appendix Figure 1 , 2 As shown, after feeding into the feed inlet of the fine crusher, the feed is split into two streams to supply two fine crushers. Each fine crusher is connected to the power distribution room 6, which can collect the current signals from both fine crushers. The power distribution room 6 is connected to the control unit 4, which is connected to the coarse crusher 1. Specific current parameters and logic control are as follows: (1) When both fine crushers (A / B) have running signals and the current is less than 35A (can be modified), collect a data every 3 seconds and make the difference (absolute value) with the current set by itself. Collect a total of 5 data. When 4 of the 5 differences are less than 1.5A (4 out of 5), compare and analyze with its own no-load current. (2) When the fine crusher A has a running signal and the current is less than 35A (can be modified), a data is collected every 3 seconds, for a total of 5 data. The difference (absolute value) between each data and the running current of the fine crusher B is calculated. When any 3 of the differences are greater than the set value of 7A (can be modified), the running currents of the fine crusher A and the fine crusher B are compared. (3) When the fine crusher B has a running signal and the current is less than 35A (can be modified), a data is collected every 3 seconds, for a total of 5 data. The difference (absolute value) between each data and the running current of the fine crusher A is calculated. When any 3 of the differences are greater than the set value of 7A (can be modified), the running current of the fine crusher B is compared with that of the fine crusher A. Meeting any one of the conditions alone will not produce any results. If both (1) and (2) are met, the fine crusher A will show a jam, and the coarse crusher 1 will stop feeding. If both (1) and (3) are met, the fine crusher B will show a jam, and the coarse crusher 1 will stop feeding. By comparing the current parameters of the two fine crushers, it is possible to avoid interference that could lead to false alarms when there are fluctuations in the feed, thus improving the accuracy.

[0026] Example 5: As shown in the attached document Figure 1 , 2 As shown, control unit 4 is a DCS computer. By using a DCS computer to process and collect data and control the start and stop of belt conveyor 2 and / or primary crusher 1, interlocking between equipment can be achieved, resulting in a higher degree of automation.

[0027] The above technical features constitute various embodiments of this utility model, which have strong adaptability and implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the needs of different situations.

Claims

1. A safety operation device for a crusher, characterized in that... It includes a primary crusher, a secondary crusher, and a belt conveyor. The primary crusher has a feed inlet at the top, and a primary temperature detection device capable of detecting the material temperature is installed above the feed inlet. A belt conveyor is located below the outlet of the primary crusher, and the other end of the belt conveyor transports the material to the feed inlet of the secondary crusher. The temperature detection device is connected to the control unit, and the control unit is connected to the belt conveyor.

2. The crusher safety operation device according to claim 1, characterized in that... A second temperature detection device capable of detecting the temperature of the material is installed above the belt conveyor.

3. The crusher safety operation device according to claim 1 or 2, characterized in that... The first and second temperature detection devices are thermal imaging dual-spectrum network cameras.

4. The crusher safety operation device according to claim 1 or 2, characterized in that... After the feed is fed into the feed inlet of the fine crusher, it is divided into two paths to supply two fine crushers. The two fine crushers are connected to the power distribution room, which can collect the current signals of the two fine crushers. The power distribution room is connected to the control unit, which is connected to the coarse crusher.

5. The crusher safety operation device according to claim 3, characterized in that... After the feed is fed into the feed inlet of the fine crusher, it is divided into two paths to supply two fine crushers. The two fine crushers are connected to the power distribution room, which can collect the current signals of the two fine crushers. The power distribution room is connected to the control unit, which is connected to the coarse crusher.

6. The crusher safety operation device according to claim 1, 2, or 5, characterized in that... The control unit is a DCS computer.

7. The crusher safety operation device according to claim 3, characterized in that... The control unit is a DCS computer.

8. The crusher safety operation device according to claim 4, characterized in that... The control unit is a DCS computer.

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