Through hole device of coking incineration acid-making waste heat boiler

Abstract

A through hole device for a coking incineration acid-making waste heat boiler comprises a trolley, a track which is fixedly installed behind the waste heat boiler and is the same as a heat exchange tube in the waste heat boiler in the length direction, the trolley is installed on the track in a matched mode, idler wheels are rotatably installed on the lower portion of the trolley and are matched with the guide rail in a rolling mode, and part of or all the idler wheels are connected with a driving motor. A lifting frame is arranged on the trolley, a lifting frame is arranged on the lifting frame, a lifting driving mechanism is connected to the lifting frame, a sliding table driven by a lead screw in the left-right direction is installed on the lifting frame, a through hole motor is fixedly installed on the sliding table, a cycloidal pin gear speed reducer is connected to an output shaft of the through hole motor, and a drill rod is connected to an output shaft of the cycloidal pin gear speed reducer. A lifting mechanism is fixedly installed at the position close to the waste heat boiler, a supporting rotating roller is rotationally installed on the lifting mechanism, and the supporting rotating roller is located below the drill rod. According to the through hole device, semi-automation is achieved.

Description

Technical Field

[0001] The utility model relates to incineration acid production in coking, in particular to a through-hole device for a waste heat boiler in coking incineration acid production, belonging to the technical field of machinery. Background Art

[0002] In the coking production, burning the collected sulfur in an incinerator to produce acid is an effective way to utilize resources. After the incinerator burns, a high-temperature gas with a high content of sulfur oxide is formed. The high-temperature gas flows into the next process after heat exchange through the waste heat boiler. The waste heat boiler uses a similar tube-plate heat exchanger. The high temperature flows through the heat exchange tube, and the heat medium is outside the heat exchange tube. Taking the applicant's existing waste heat boiler as an example, there are 215 tubes (heat exchange tubes) with a diameter of 50mm and a length of 9.5 meters in the waste heat boiler. Because there are many solids in the flue gas, they will be deposited when passing through the heat exchange tube, so during operation Ash will accumulate on the inner wall of the middle pipe, which will cause large smoke resistance and affect the steam pressure of the boiler. Therefore, the heat exchange tube needs to be cleaned. When cleaning, there is a plug 23 corresponding to each heat exchange tube on the rear smoke chamber. The plug is removed to make a through hole. There are ash flow ports with covers under the smoke chambers at both ends. The ash in the heat exchange tube flows out from the smoke chambers at both ends. During the through hole process, because the exhaust fan in the rear smoke chamber is in a negative pressure state (lower than atmospheric pressure), the gas in the heat exchange tube will not escape into the atmosphere during the through hole, and the air entering the rear smoke chamber from the atmosphere does not affect the normal operation of the process. For the above 215 heat exchange tubes, according to the requirements, they must be drilled once a day. Taking three-shift operation as an example, more than 70 holes need to be drilled in each shift. The traditional through hole uses a manually operated air cannon drill. This method has a large workload. Basically, two people need to drill holes for about 6 hours in each shift. In addition, the drill rod of the air cannon is easily damaged during use, and the human and material resources are consumed. Summary of the invention

[0003] The utility model aims to overcome the above-mentioned problems existing in the through holes of the waste heat boiler for acid production by incineration, and provides a through hole device for the waste heat boiler for acid production by incineration by coking.

[0004] To achieve the purpose of the utility model, the following technical scheme is adopted: a through-hole device for waste heat boiler in coking incineration acid production, comprising a trolley, a track with the same length direction as the heat exchange tube in the waste heat boiler is fixedly installed behind the waste heat boiler, a trolley is installed on the track, rollers are rotatably installed at the lower part of the trolley, the rollers roll and cooperate on the guide rails, some or all of the rollers are connected to a driving motor, a lifting frame is provided on the trolley, a lifting drive mechanism is connected to the lifting frame, a slide driven by a lead screw in the left and right directions is installed on the lifting frame, a through-hole motor is fixedly installed on the slide, a cycloidal pinwheel reducer is connected to the output shaft of the through-hole motor, a drill rod is connected to the output shaft of the cycloidal pinwheel reducer, a lifting mechanism is fixedly installed near the waste heat boiler, a supporting roller is rotatably installed on the lifting mechanism, and the supporting roller is located below the drill rod.

[0005] Furthermore, there are four rollers distributed in a rectangular shape on the trolley. The two rear rollers away from the waste heat boiler are rotatably connected to the output shaft of the drive motor. Gears are coaxially installed with the two rear rollers. The gears are fixedly connected to the output shaft of the drive motor. A rack is fixedly arranged along the direction of the track below the gear, and the gears are meshed with the racks.

[0006] Furthermore, the slide driven by the lead screw in the left and right directions is a manual slide.

[0007] Furthermore, there are scales on the trolley in the up and down directions for marking the height of the lifting frame, and there are scales on the screw-driven slide for marking the left and right directions of the slide.

[0008] The positive and beneficial effects of the utility model are as follows: the through-hole device realizes semi-automation, can significantly save manpower and material resources, and improve work efficiency, which will be specifically described in conjunction with a specific implementation method. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the left and right directions of the utility model.

[0010] Figure 2 It is a schematic diagram of the front and rear directions of the utility model.

[0011] Figure 3 It is a schematic diagram of the rear end face of the waste heat boiler. DETAILED DESCRIPTION

[0012] In order to more fully explain the implementation of the utility model, implementation examples of the utility model are provided. These implementation examples are only for the purpose of illustrating the utility model and do not limit the scope of the utility model.

[0013] The present invention is further explained in detail in conjunction with the accompanying drawings, in which the marks are: 1: rail; 2: trolley; 3: lifting motor; 4: cycloidal pinwheel reducer; 5: lifting frame; 6: through-hole motor; 7: lifting screw; 8: roller; 9: lifting mechanism; 10: supporting roller; 11: waste heat boiler; 12: front smoke box; 13: heat exchange tube; 14: rear smoke box; 15: gear; 16: rack; 17: driving motor; 18: left and right screws; 19: slide; 20: transmission shaft; 21: first bevel gear; 22: second bevel gear; 23: plug.

[0014] As shown in the accompanying drawings, a through-hole device for a waste heat boiler for acid production by coking incineration comprises a trolley 2, a track 1 having the same length direction as the heat exchange tube in the waste heat boiler is fixedly installed behind the waste heat boiler, the trolley 2 is installed on the track, a roller 8 is rotatably installed at the lower part of the trolley, the roller 8 rolls on the guide rail, some or all of the rollers are connected to a driving motor, there are four rollers distributed in a rectangular shape on the trolley, the two rear rollers away from the waste heat boiler are rotatably connected to the output shaft of the driving motor 17, a gear 15 is coaxially installed with the two rear rollers, the gear 15 is fixedly connected to the output shaft of the driving motor, a rack 16 is fixedly arranged along the track direction below the gear 15, the gear is meshed with the rack, so that the trolley runs smoothly during walking and will not slip due to the low friction of the track during long-term use.

[0015] The trolley 2 is provided with a lifting frame 5, and the lifting frame is connected with a lifting drive mechanism. In this embodiment, the lifting drive mechanism adopts a lifting motor 3, and a reducer is connected to the output shaft of the lifting motor 3. A transmission shaft is connected to the left and right sides of the reducer. The transmission shaft is fixedly connected to the output shaft of the reducer, and the end of the transmission shaft is fixedly connected to the first bevel gear 21. A lifting screw 17 is rotatably installed on both sides of the trolley, and the upper end of the lifting screw is fixedly connected to the second bevel gear 22. The first bevel gear and the second bevel gear are meshed. Nuts matching the lifting screw are fixedly connected at both ends of the lifting plus 5. The lifting motor drives the lifting screw to rotate, and the rotation of the lifting screw drives the lifting plus to lift.

[0016] A slide table driven by a screw in the left and right directions is installed on the lifting frame. The slide table driven by the screw in the left and right directions is a manual screw slide table. The manual screw adopts a self-locking screw. 24 is a handle for the manual screw slide table to drive the screw to rotate. The manual screw is adopted because there are many equipment brackets behind the waste heat boiler. If an electric one is adopted, installation space is required. Insufficient installation space will cause interference with existing equipment and brackets. A through-hole motor 6 is fixedly installed on the slide table. For more stable support, a slide rail consistent with the direction of the screw can be fixedly installed on the lifting platform. The slide rail is matched with a slider, and the slider and the slide table are fixedly connected. A cycloidal pinwheel reducer 4 is connected to the output shaft of the through-hole motor 6, and the drill rod is connected to the output shaft of the cycloidal pinwheel reducer. The drill rod is not shown in the figure. A lifting mechanism 9 is fixedly installed near the waste heat boiler. A supporting roller 10 is rotatably installed on the lifting mechanism. The supporting roller 10 is located below the drill rod. The lifting mechanism can adopt an electric lift. There are scales on the trolley in the up and down directions to mark the height of the lifting frame, and there are scales on the screw-driven slide to mark the left and right directions of the slide. Because the heat exchange tubes on the waste heat boiler are distributed layer by layer, the height position of the heat exchange tubes on the same layer is the same, so each layer of heat exchange tubes is targeted at a height. Similarly, the left and right positions of each heat exchange tube are also fixed. Because the drill rod is relatively long, it is easy to sag under the action of flexibility. There are scales that can directly and accurately locate it, and then raise the lifting mechanism to the corresponding height for support. The lifting mechanism has two functions. One is to lift the support roller to a certain height to support the drill rod, and the other is that the lifting mechanism moves up and down in a small range during the initial rotation of the drill rod into the heat exchange tube, which can expand the cleaning range of the drill rod and improve the cleaning effect, which helps to increase the steam pressure (heat exchange effect) of the waste heat boiler.

[0017] When using this device to drill a hole, it is only necessary to adjust the height of the lifting platform and the left and right position of the slide table so that the drill rod and the heat exchange tube are aligned front to back, start the through-hole motor to drive the drill rod to rotate, and start the drive motor to drive the trolley to move forward.

[0018] As a further optimization, an induction switch (such as a proximity switch or a photoelectric switch) can be set at the position where the drill rod completes the through hole, and a sensor is fixed on the trolley. After the sensor is sensed by the induction switch, the drive motor stops.

[0019] This device is highly efficient. With this device, one worker in one shift (8 hours) can complete the through-hole task in less than 3 hours, which is about 5 times the original efficiency and greatly saves manpower. At the same time, the cycloid pinwheel reducer drives the drill rod stably and is not easily damaged.

[0020] After describing the implementation mode of the utility model in detail, people familiar with the technology can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent application. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the scope of the technical solution of the utility model, and the utility model is not limited to the implementation mode of the examples given in the specification.

Claims

1. A through-hole device for a waste heat boiler for acid production by coking incineration, comprising a trolley, characterized in that: A track with the same length direction as the heat exchange tube in the waste heat boiler is fixedly installed behind the waste heat boiler, a trolley is installed on the track, rollers are rotatably installed at the lower part of the trolley, the rollers roll and fit on the guide rail, some or all of the rollers are connected to a driving motor, a lifting rack is provided on the trolley, a lifting drive mechanism is connected to the lifting rack, a slide driven by a lead screw in the left and right directions is installed on the lifting rack, a through-hole motor is fixedly installed on the slide, a cycloidal pinwheel reducer is connected to the output shaft of the through-hole motor, a drill rod is connected to the output shaft of the cycloidal pinwheel reducer, a lifting mechanism is fixedly installed near the waste heat boiler, a supporting roller is rotatably installed on the lifting mechanism, and the supporting roller is located below the drill rod.

2. A through-hole device for a coking incineration acid-making waste heat boiler according to claim 1, characterized in that: There are four rollers distributed in a rectangular shape on the trolley. The two rear rollers away from the waste heat boiler are rotatably connected to the output shaft of the drive motor. A gear is installed coaxially with the two rear rollers. The gear is fixedly connected to the output shaft of the drive motor. A rack is fixedly arranged along the direction of the track below the gear, and the gear is meshed with the rack.

3. A through-hole device for a coking incineration acid-making waste heat boiler according to claim 1, characterized in that: The slide table driven by the lead screw in the left and right directions is a manual slide table.

4. A through-hole device for a coking incineration acid-making waste heat boiler according to claim 1, characterized in that: There are scales on the trolley in the up and down directions for marking the height of the lifting frame, and there are scales on the screw-driven slide for marking the left and right directions of the slide.

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