Calcium carbide furnace disc feeding device

Abstract

The utility model relates to the field of calcium carbide production, in particular to a calcium carbide furnace disc feeding device which comprises a plurality of feeding channels, a disc feeding bin for providing calcium carbide materials for the feeding channels and a blanking control mechanism for controlling the disc feeding bin to provide the calcium carbide materials for the designated feeding channels. The multiple feeding channels are all arranged at the bottom of the disc feeding bin. The feeding channels are arranged on the peripheral side of the electrode, the feeding channels at the corresponding positions of the electrode can be controlled in time through the discharging control mechanism to supply calcium carbide materials according to the consumption condition of the calcium carbide materials on the peripheral side of the electrode, and therefore fixed-point feeding can be conducted on the electrode according to the actual working condition of the calcium carbide furnace; therefore, the service life of the electrode is prolonged, the working efficiency of the calcium carbide furnace is improved, and the actual working requirements are met.

Description

Technical Field

[0001] The utility model relates to the field of calcium carbide production, in particular to a circular disc feeding device for a calcium carbide furnace. Background Art

[0002] During the calcium carbide production process, it is necessary to energize the electrodes in the calcium carbide furnace and use electric arc to heat and melt the calcium carbide material (lignite and lime mixed in proportion); during the calcium carbide production process, it is necessary to replenish and add calcium carbide material in real time according to the melting progress of the calcium carbide material in the calcium carbide furnace to ensure stable calcium carbide production.

[0003] When adding calcium carbide materials into the calcium carbide furnace, mechanical equipment is usually used to add the calcium carbide materials directly into the calcium carbide furnace. For example, the Chinese utility model patent with publication number CN215710158U provides an automatic paste adding system for an 81000KVA calcium carbide furnace. By setting up a series of silos, feeding belts, loading trolleys and other components, automatic feeding of materials is achieved, avoiding the risk of manual addition of materials that increases operations.

[0004] However, this method has a fixed material adding position. Due to the inconsistent melting state of the material near the electrode, different amounts of material need to be added according to the actual situation. Therefore, after replenishing the material at a fixed position, material accumulation or insufficient material may occur near the electrode, resulting in poor quality of calcium carbide production and electrode failure. Utility Model Content

[0005] The utility model aims to provide a disc feeding device for a calcium carbide furnace, so as to solve the problem of uneven feeding of the calcium carbide furnace at present.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A disc feeding device for a calcium carbide furnace comprises a plurality of feeding channels, a disc feeding bin for providing calcium carbide materials to the plurality of said feeding channels, and a material drop control mechanism for controlling the disc feeding bin to provide calcium carbide materials to a designated feeding channel; the plurality of said feeding channels are all arranged at the bottom of the disc feeding bin.

[0008] It is further defined that the disc feed bin includes a collection bin, a plurality of feed bins disposed at the bottom of the collection bin, and a scraper valve disposed between the collection bin and each of the feed bins;

[0009] The feeding bin array is arranged at the bottom of the collecting bin, the feeding bins are connected to the feeding channels in a one-to-one correspondence, and the scraper valves are all connected to the material dropping control mechanism.

[0010] It is further defined that the scraper valve is a pneumatic scraper valve.

[0011] It is further defined that the material drop control mechanism includes an air source pipe, a scraper valve control unit and a plurality of bronchial pipes;

[0012] One end of the plurality of bronchial tubes is connected to the scraper valves one by one, and the other end of the bronchial tubes is connected to the air source pipe through a scraper valve control unit, and the scraper valve control unit is arranged on the outside of the disc feeding bin.

[0013] It is further defined that a plurality of drop control switches are provided on the scraper valve control unit, and the plurality of drop control switches are connected to the bronchial tubes in a one-to-one correspondence.

[0014] It is further defined that the feeding channel includes a drop pipe and a feeding pipe, the feeding bin is connected to the feeding pipe through the drop pipe, and the feeding pipe extends downward to the peripheral side of the electrode.

[0015] It is further defined that a protective tube is sleeved on the outer side of the drop tube, the top of the protective tube is sealed and connected to the drop tube, and the bottom of the protective tube extends to the top of the feeding tube.

[0016] It is further defined that the number of the feeding pipes is at least two.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] 1. The utility model sets a plurality of feeding channels around the electrode. According to the consumption of calcium carbide materials on the side of the electrode, the feeding channels at the corresponding positions of the electrode can be timely controlled by the drop control mechanism to replenish the calcium carbide materials. Thus, the electrode can be fed at a fixed point according to the actual working conditions of the calcium carbide furnace, making the feeding more uniform and reliable, thereby increasing the service life of the electrode and the working efficiency of the calcium carbide furnace to meet the actual working needs.

[0019] 2. The utility model sets a scraper valve between the collecting bin and each feeding bin, and controls the switch of the scraper valve through the material dropping control mechanism, so that the scraper valve at the corresponding position can be controlled to open for material dropping according to the consumption of calcium carbide materials near the electrode, thereby improving control accuracy, improving work efficiency and ensuring safe and reliable production.

[0020] 3. The utility model further meets the feeding needs of different positions around the electrode by arranging at least two feeding pipes at the bottom of each drop pipe, further ensures the uniform supply of calcium carbide material around the electrode, and improves the reliability of electrode operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the disc feeding device for calcium carbide furnace of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the calcium carbide furnace of the utility model;

[0023] In the figure: 10-feeding channel; 11-feeding pipe; 12-feeding pipe; 20-electrode; 30-disc feeding bin; 31-collecting bin; 32-feeding bin; 40-bronchial pipe; 50-scraper valve control unit; 51-feeding control switch; 60-gas source pipe; 70-calcium carbide furnace. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0025] Three electrodes 20 are provided in the calcium carbide furnace 70 , namely a first electrode, a second electrode and a third electrode. The centers of the first to third electrodes form an equilateral triangle, and the center of the equilateral triangle coincides with the axis of the calcium carbide furnace 70 .

[0026] The inside of the calcium carbide furnace 70 is equally divided into a first calcium carbide chamber, a second calcium carbide chamber and a third calcium carbide chamber around the axis of the calcium carbide furnace 70. The center of the first electrode is set on the angular bisector of the first calcium carbide chamber, the center of the second electrode is set on the angular bisector of the second calcium carbide chamber, and the center of the third electrode is set on the angular bisector of the third calcium carbide chamber.

[0027] Example 1

[0028] refer to Figure 1 The present embodiment provides a disc feeding device for a calcium carbide furnace, including a feeding channel 10, a disc feeding bin 30 and a material drop control mechanism. There are multiple feeding channels 10, and the tops of the multiple feeding channels 10 are all arranged at the bottom of the disc feeding bin 30. The bottoms of all feeding channels 10 extend to the circumference of the three electrodes 20, and the material drop control mechanism is installed on the outside of the disc feeding bin 30.

[0029] The disc feeding bin 30 is used to contain the calcium carbide material transported from upstream and transport the calcium carbide material to the calcium carbide furnace 70 through the feeding channel 10. Different feeding channels 10 are used to feed different positions around different electrodes.

[0030] The material dropping control mechanism is used to control the disc feeding bin 30 to feed into which feeding channel 10 or the designated position, so as to add materials to the surrounding side of the electrode 20, thereby completing the fixed-point material dropping control, ensuring the uniformity of the calcium carbide material on the surrounding side of the electrode, improving the operation safety and work efficiency, and ensuring the operation is stable and reliable, meeting the actual operation needs, and increasing the service life of the electrode 20.

[0031] To further explain, the disc feeding bin 30 includes a collecting bin 31, a plurality of feeding bins 32 and a scraper valve (not shown) disposed between each feeding bin 32 and the collecting bin 31. Preferably, the feeding bins 32 are disposed at equal intervals along the bottom circumference of the collecting bin 31.

[0032] A collection port is provided at the top of the collection bin 31. After the mixed calcium carbide material is injected into the collection bin 31 through the collection port, whether the calcium carbide material enters the feeding bin 32 can be controlled by controlling the switch of the scraper valve. When the scraper valve is closed, the corresponding feeding channel 10 stops the material dropping operation. At this time, the feeding bin 32 is connected one-to-one with the feeding channel 10.

[0033] At the same time, the material dropping control mechanism is connected to each scraper valve to control the switch of each scraper valve.

[0034] The scraper valve is electrically controlled so that it can be remotely controlled through the material dropping control mechanism to avoid on-site personnel having to perform operations; the operator controls different feeding channels 10 to drop or not drop materials by operating the material dropping control mechanism according to the actual situation in the calcium carbide furnace 70, thereby achieving uniform feeding of the calcium carbide furnace and meeting operational requirements.

[0035] When the scraper valve is electrically controlled, an electric lifting and retracting cylinder capable of driving the scraper valve to open and close is provided in the scraper valve, and the material dropping control mechanism controls the electric lifting and retracting cylinder through cables or wireless LAN, thereby realizing remote control.

[0036] The scraper valve is explained by taking a pneumatic scraper valve as an example. The material dropping control mechanism includes an air source pipe 60, a scraper valve control unit 50 and multiple bronchial pipes 40. The scraper valve control unit 50 is provided with multiple material dropping control switches 51, and the material dropping control switches 51 are arranged one by one with the bronchial pipes 40.

[0037] One end of the air source pipe 60 is connected to the air source (not shown in the figure), and the other end of the air source pipe 60 is connected to the input end of the scraper valve control unit 50. The output end of the scraper valve control unit 50 is connected to one end of each bronchus 40, and the other end of the bronchus 40 is connected to the pneumatic scraper valve. Each material dropping control switch 51 is connected to the corresponding bronchus 40, and the bronchus 40 is connected to the air source pipe 60, so that the material dropping control switch 51 can control the air inlet / return of each bronchus 40, thereby controlling the pneumatic scraper valve to open or close the connection between the feed bin 32 and the collection bin 31 to realize material dropping control.

[0038] To further explain, the feeding channel 10 includes a drop pipe 11 and a feeding pipe 12. The top of the drop pipe 11 is connected to the bottom of the feeding bin 32, and the bottom of the drop pipe 11 is connected to at least two feeding pipes 12. The feeding channel 10 includes a drop pipe 11 and two feeding pipes 12 connected to the drop pipe 11. At the same time, the number of feeding channels 10 can be selected as 12. At this time, the number of feeding bins 32 is 12, namely 1# feeding bin to 12# feeding bin, and the number of feeding pipes 12 is 24.

[0039] In actual use, the drop pipe 11 is set on the high floors of the factory and the calcium carbide furnace 70 is set on the low floors of the factory, so the drop pipe 11 needs to extend downward through the floors. In order to protect the drop pipe 11, a protective pipe (not shown in the figure) needs to be set on the outside of the drop pipe 11. The protective pipe is set between the floors, and the drop pipe 11 extends downward through the protective pipe. However, in order to avoid the smoke generated by the calcium carbide furnace 70 at the bottom from overflowing from the protective pipe and the drop pipe 11, it is chosen to seal the drop pipe 11 at the top of the protective pipe, and the protective pipe extends to the top of the feeding pipe 12.

[0040] The 24 feed pipes 12 are respectively arranged around the three electrodes. Figure 2 .

[0041] Specifically, 21 feeding tubes 12 are arrayed around the first electrode, the second electrode and the third electrode, wherein the first calcium carbide chamber is provided with 7 feeding tubes 12, the second calcium carbide chamber is provided with 8 feeding tubes 12, and the third calcium carbide chamber is provided with 6 feeding tubes 12. A drop tube 11 is provided between the first calcium carbide chamber and the second calcium carbide chamber, between the second calcium carbide chamber and the third calcium carbide chamber, and between the third calcium carbide chamber and the first calcium carbide chamber, and the included angle of any calcium carbide chamber is 120°.

[0042] The 6 feeding tubes 12 located in the first calcium carbide chamber, the 6 feeding tubes 12 located in the second calcium carbide chamber and the 6 feeding tubes 12 located in the third calcium carbide chamber are all arranged at intervals around the center of the corresponding electrode, and the angle between two adjacent feeding tubes 12 is 45°. The angle between one feeding tube 12 located between the first calcium carbide chamber and the second calcium carbide chamber and one feeding tube 12 located between the second calcium carbide chamber and the third calcium carbide chamber and the center of the second electrode is also 45°, so that 8 equally spaced feeding tubes 12 are arranged on the circumference of the second electrode; similarly, 8 equally spaced feeding tubes 12 are arranged on the outside of the third electrode and the first electrode in the same way, except that two feeding tubes 12 close to the furnace wall of the calcium carbide furnace are also arranged in the second calcium carbide chamber, and one feeding tube 12 is arranged in the first calcium carbide chamber close to the third calcium carbide chamber and the furnace wall of the calcium carbide furnace, so as to meet the actual requirement of uniform filling in the operation process of the calcium carbide furnace 70.

[0043] Specifically, the source of the calcium carbide material added to the first calcium carbide chamber through the feeding pipe 12 is:

[0044] The 4# feeding bin near the calcium carbide furnace 70 and the third calcium carbide chamber, and the 2# feeding bin, 4# feeding bin, 4# feeding bin, 5# feeding bin, 5# feeding bin and 6# feeding bin arranged clockwise around the first electrode.

[0045] The specific sources of calcium carbide materials added to the second calcium carbide chamber through the feeding pipe 12 are:

[0046] The 7# feeding bin is close to the first calcium carbide chamber, the 10# feeding bin is close to the third calcium carbide chamber, and the 6# feeding bin, 8# feeding bin, 8# feeding bin, 9# feeding bin, 9# feeding bin and 11# feeding bin are arranged clockwise around the second electrode.

[0047] The specific sources of calcium carbide materials added to the third calcium carbide chamber through the feeding pipe 12 are:

[0048] The 11# feeding bin, 12# feeding bin, 12# feeding bin, 1# feeding bin, 1# feeding bin, 1# feeding bin and 2# feeding bin are arranged clockwise around the third electrode.

[0049] The feeding pipe 12 located between two adjacent calcium carbide chambers is fed with materials in a clockwise direction from the 7# feeding bin, the 10# feeding bin and the 3# feeding bin.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A disc feeding device for a calcium carbide furnace, characterized in that: The invention comprises a plurality of feeding channels (10), a disc feeding bin (30) for providing calcium carbide materials to the plurality of feeding channels (10), and a material drop control mechanism for controlling the disc feeding bin (30) to provide calcium carbide materials to a designated feeding channel (10); the plurality of feeding channels (10) are all arranged at the bottom of the disc feeding bin (30).

2. The calcium carbide furnace disc feeding device according to claim 1 is characterized in that: The disc feeding bin (30) comprises a material collecting bin (31), a plurality of material feeding bins (32) arranged at the bottom of the material collecting bin (31), and a scraper valve arranged between the material collecting bin (31) and each of the material feeding bins (32); The feeding bins (32) are arranged in array at the bottom of the collecting bin (31), the feeding bins (32) are connected to the feeding channels (10) in a one-to-one correspondence, and the scraper valves are all connected to the material drop control mechanism.

3. The calcium carbide furnace disc feeding device according to claim 2 is characterized in that: The scraper valve is a pneumatic scraper valve.

4. The calcium carbide furnace disc feeding device according to claim 3 is characterized in that: The material drop control mechanism comprises an air source pipe (60), a scraper valve control unit (50) and a plurality of bronchial pipes (40); One end of the plurality of bronchial tubes (40) is connected to the scraper valves one by one, and the other end of the bronchial tubes (40) is connected to the air source pipe (60) via a scraper valve control unit (50), and the scraper valve control unit (50) is arranged on the outside of the disc feeding bin (30).

5. The calcium carbide furnace disc feeding device according to claim 4 is characterized in that: The scraper valve control unit (50) is provided with a plurality of material dropping control switches (51), and the plurality of material dropping control switches (51) are connected to the bronchial tubes (40) in a one-to-one correspondence.

6. The calcium carbide furnace disc feeding device according to claim 2 or 5, characterized in that: The feeding channel (10) comprises a feeding pipe (11) and a feeding pipe (12); the feeding bin (32) is connected to the feeding pipe (12) through the feeding pipe (11); and the feeding pipe (12) extends downward to the peripheral side of the electrode (20).

7. The calcium carbide furnace disc feeding device according to claim 6 is characterized in that: A protective tube is sleeved on the outside of the drop tube (11), the top of the protective tube is sealedly connected to the drop tube (11), and the bottom of the protective tube extends to the top of the feeding tube (12).

8. The calcium carbide furnace disc feeding device according to claim 7 is characterized in that: The number of the feeding pipes (12) is at least two.

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