Device for detecting thawing temperature of fine particle material in real time

Abstract

A device for detecting the thawing temperature of fine particle materials in real time comprises a probe rod, a gear and rack transmission system, a motor, a friction type torsion coupler, an anti-explosion guiding device, a temperature sensor and an encoder and is integrally installed on a roof of a thawing warehouse. The feeler lever can penetrate through the roof of the unfreezing warehouse to enter the unfreezing warehouse, the motor is in transmission connection with the friction type torsion coupler, the friction type torsion coupler is connected with the feeler lever through the gear rack transmission system, the temperature sensor is installed at the bottom of the feeler lever, and the encoder is installed on the friction type torsion coupler. And the probe rod moves up and down along the anti-explosion guide device. The device can detect and feed back the material unfreezing condition in real time; energy waste is reduced to the maximum extent, and carbon emission is reduced; warehousing operation of operators is avoided, and the safety risk is reduced; the unfreezing time is shortened, and the damage to railway bureau railway wagons caused by gas heating is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical manufacturing, in particular to a device for real-time detection of the thawing temperature of fine particle materials. Background Art

[0002] At the current stage, when a steel plant's thawing warehouse is thawing 0.2-1mm fine-particle materials, the actual thawing situation in the material warehouse is detected based on experience, artificial estimation of thawing time, and manual on-site inspection. It is impossible to detect the temperature changes of the thawed materials in real time. Each manual inspection requires stopping the fan and opening the warehouse door, on-site gas concentration testing, and cooling to a temperature that personnel can withstand before entering the inspection. If the thawing situation is not ideal, the fan needs to be restarted for reheating and insulation. At the same time, excessive heating and blind extension of the thawing time will cause damage to the railway bureau's car body. Comprehensive analysis of the current operation and inspection mode will lead to a series of problems such as energy waste, equipment damage, high labor costs, and certain safety risks for operators. It is necessary to design a mechanical device that can provide real-time feedback on the thawing situation of materials. Utility Model Content

[0003] The purpose of the utility model is to provide a device for real-time detection of the thawing temperature of fine-particle materials, which can detect and feedback the thawing status of materials in real time; minimize energy waste and reduce carbon emissions; avoid operators entering the warehouse for operation and reduce safety risks; reduce the thawing time and reduce the damage caused by gas heating to the railway carriage.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A device for real-time detection of the thawing temperature of fine-grained materials comprises a probe rod, a gear rack transmission system, a motor, a friction torque coupling, an explosion-proof guide device, a temperature sensor, and an encoder. The device for real-time detection of the thawing temperature of fine-grained materials is installed as a whole on the roof of a thawing warehouse. The probe rod can penetrate the roof of the thawing warehouse and enter the thawing warehouse. The motor is connected to the friction torque coupling, and the friction torque coupling is connected to the probe rod through the gear rack transmission system. A temperature sensor is installed at the bottom of the probe rod, and an encoder is installed on the friction torque coupling. The probe rod moves up and down along the explosion-proof guide device.

[0006] The explosion-proof guide device comprises a guide roller and a bracket. The guide roller is installed on the bracket through a bearing. The guide roller is rollingly connected to the probe rod. The outside of the guide roller is wrapped with polyurethane material.

[0007] It also includes a braking device, which is installed on the shaft side of the motor reducer.

[0008] The braking device is a holding brake.

[0009] It also includes upper and lower limit position sensors of the probe rod, which are two proximity switches, one installed at the upper limit position of the probe rod, and the other installed at the lower limit position of the probe rod.

[0010] A photoelectric switch is installed at the door of the thawing warehouse to sense whether the door is closed.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model discloses a device for real-time detection of the thawing temperature of fine-grained materials, which can detect and feedback the thawing status of materials in real time; minimize energy waste and reduce carbon emissions; avoid operators entering the warehouse for operation and reduce safety risks; shorten the thawing time and reduce the damage caused by gas heating to the railway carriage.

[0013] Since the implementation of this utility model, automatic control has been adopted to detect and feedback the thawing status of materials in real time, and precise control has been adopted to minimize energy waste, reduce carbon emissions, and avoid safety operation risks for operators. The daily gas thawing cost of the thawing warehouse is 100,000 yuan, and the hourly thawing cost is 4,166 yuan per hour. Each time the thawing warehouse is opened, heat is released, personnel enter for inspection, and then the temperature is reheated to 120℃ for about 1 hour. Each warehouse is inspected at least twice, and the daily thawing cost can be directly reduced by 8,332 yuan. Calculated based on the thawing period of 5 months and 150 days, the steel plant can reduce the thawing cost by 2.4 million yuan per year. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of a device for real-time detection of the thawing temperature of fine particle materials.

[0015] Figure 2 yes Figure 1 Top view of the .

[0016] In the figure: 1-probe rod, 2-explosion-proof guide device, 21-bracket, 22-guide roller, 3-gear, 4-frame, 5-motor, 6-friction torque coupling, 7-encoder, 8-bearing, 9-temperature sensor, 10-lower telescopic cover of temperature measuring rod, 11-upper telescopic cover of temperature measuring rod, 12-rack, 13-brake, 14-probe rod probe, 15-roof of thawing warehouse. DETAILED DESCRIPTION

[0017] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0018] See Figure 1-Figure 2A device for real-time detection of the thawing temperature of fine-particle materials comprises a probe rod 1, a gear rack transmission system, a motor 5, a friction torque coupling 6, an explosion-proof guide device 2, a temperature sensor 9, and an encoder 7. The device for real-time detection of the thawing temperature of fine-particle materials is installed as a whole on the roof 15 of the thawing warehouse. The probe rod 1 can penetrate the roof 15 of the thawing warehouse and enter the thawing warehouse. The motor 5 is connected to the friction torque coupling 6 through the gear rack transmission system. The friction torque coupling 6 is connected to the probe rod 1 through the gear rack transmission system. The temperature sensor 9 is installed at the bottom of the probe rod 1. The friction torque coupling 6 is installed with the encoder 7. The probe rod 1 moves up and down along the explosion-proof guide device.

[0019] The explosion-proof guide device 2 includes a guide roller 22 and a bracket 21. The guide roller 22 is installed on the bracket 21 through a bearing 8. The guide roller 22 is rollingly connected to the probe rod 1. The outside of the guide roller 22 is wrapped with polyurethane material.

[0020] It also includes a braking device, which is installed on the shaft side of the motor reducer.

[0021] The braking device is a brake 13. The brake 13 is used for emergency braking in case of electrical failure to prevent the probe rod from descending and causing danger. Figure 2 The middle is a schematic diagram of the brake 13 frame.

[0022] The motor 5 drives the friction torque coupling 6 to rotate, the gear 3 is fixed on the friction torque coupling 6, the rack 12 is fixedly connected to the probe rod 1, and the gear 3 and the rack 12 are combined to drive the probe rod 1 to rise and fall. The probe rod 1 is guided and limited by the explosion-proof guide roller 22. During the transmission process, in order to prevent sparks from igniting the leaked gas, the guide roller 22 adopts an explosion-proof design and is wrapped with polyurethane material on the outside to avoid sparks during mechanical friction.

[0023] A probe probe 14 is fixed to the bottom of the probe rod 1 , and a temperature sensor 9 is installed between the probe probe 14 and the probe rod 1 .

[0024] It also includes upper and lower limit position sensors of the probe rod, which are two proximity switches, one installed at the upper limit position of the probe rod and the other installed at the lower limit position of the probe rod. When the probe rod 1 is lifted to the limit position, the proximity switch sends a signal, and the motor 5 is powered off and stops running.

[0025] A photoelectric switch is installed at the door of the thawing warehouse to sense whether the door is closed. If the door is open, the photoelectric switch sends a signal, and the PLC controls the probe rod 1 to return to the upper limit position.

[0026] A method for using a device for real-time detection of thawing temperature of fine particle materials, specifically comprising the following contents:

[0027] After starting, the probe rod 1 moves vertically downward to the surface of the thawed material and continues to move downward. If the material is not thawed well and the surface resistance is greater than the set value of the friction torque coupling 6, the probe rod 1 stops moving downward, and the encoder 7 detects that the friction torque coupling 6 stops rotating, and the motor reducer idles. After the idle setting time exceeds, the motor 5 is powered off;

[0028] The intermittent thawing time is set. After the intermittent thawing time, the motor 5 automatically starts to repeat the above movement until the probe rod 1 runs to the lower limit position to stop the above control. The thawing is completed, and the probe rod 1 automatically returns to the upper end original position. During this operation, the temperature sensor 9 detects and feeds back the internal temperature of the material in real time.

[0029] The lower limit position of the probe rod 1 is 100 to 300 mm from the bottom of the thawing compartment, and the upper original position (upper limit position) of the probe rod 1 is 100 to 200 mm from the bottom of the thawing compartment.

[0030] If the door of the thawing warehouse is opened, the probe rod interlock protection will be activated and automatically return to the upper original position to prevent the car body from moving and damaging the device.

[0031] The set idling time is 1 to 5 seconds; the intermittent thawing time is 15 to 20 minutes.

[0032] Example:

[0033] The detection device is installed on the roof 15 of the thawing warehouse, above the center of the last carriage entering the warehouse, closest to the gate, and is the last thawing area with the lowest temperature.

[0034] The detection device is driven by a motor, a worm gear reducer, a friction torque coupling 6 (torque limiting coupling TC700-2), a gear 3, and a rack 12 to achieve upper and lower detection displacement, detect the material temperature 300mm from the bottom of the car box, and return to the top of the thawing warehouse roof 15 and 200mm from the top of the car box.

[0035] After pressing the start button, the device starts the probe rod 1 to move vertically downward and reach the surface of the thawed material and then continue to move downward. If the material is not thawed well and the surface resistance is greater than the set value of the friction torque coupling 6, the probe rod 1 stops moving downward, and the encoder 7 detects that the friction torque coupling 6 stops rotating, and the motor reducer idles. After idling for 5S, the motor 5 is powered off. After 20 minutes, the motor 5 automatically starts and repeats the above movement until the probe rod 1 runs to 300mm from the bottom of the car and stops the above control. The thawing is completed, and the probe rod 1 automatically returns to its original position at the upper end (200mm from the top of the car). During this operation, the temperature sensor 9 detects and feeds back the internal temperature of the material on the operation screen in real time. At the same time, if the door of the thawing warehouse is opened, the probe rod interlocking protection starts and automatically returns to its original position to prevent the car skin from moving and damaging the device.

Claims

1. A device for real-time detection of thawing temperature of fine particle materials, characterized in that: The device comprises a probe rod, a gear rack transmission system, a motor, a friction torque coupling, an explosion-proof guide device, a temperature sensor, and an encoder. The device for real-time detection of the thawing temperature of fine particle materials is installed as a whole on the roof of the thawing warehouse. The probe rod can penetrate the roof of the thawing warehouse and enter the thawing warehouse. The motor transmission is connected to the friction torque coupling, and the friction torque coupling is connected to the probe rod through the gear rack transmission system. A temperature sensor is installed at the bottom of the probe rod, and an encoder is installed on the friction torque coupling. The probe rod moves up and down along the explosion-proof guide device.

2. The device for real-time detection of thawing temperature of fine particle materials according to claim 1, characterized in that: The explosion-proof guide device comprises a guide roller and a bracket. The guide roller is installed on the bracket through a bearing. The guide roller is rollingly connected to the probe rod. The outside of the guide roller is wrapped with polyurethane material.

3. The device for real-time detection of thawing temperature of fine particle materials according to claim 1, characterized in that: It also includes a braking device, which is installed on the shaft side of the motor reducer.

4. The device for real-time detection of thawing temperature of fine particle materials according to claim 3, characterized in that: The braking device is a holding brake.

5. The device for real-time detection of thawing temperature of fine particle materials according to claim 1, characterized in that: It also includes upper and lower limit position sensors of the probe rod, which are two proximity switches, one installed at the upper limit position of the probe rod, and the other installed at the lower limit position of the probe rod.

6. The device for real-time detection of thawing temperature of fine particle materials according to claim 1, characterized in that: A photoelectric switch is installed at the door of the thawing warehouse to sense whether the door is closed.

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