A device for efficiently isolating materials of a feeding pipe of a calcium carbide furnace

Abstract

The utility model provides a kind of device of high -efficient calcium carbide furnace blanking pipe material, it is related to calcium carbide production equipment technical field, it is applied to calcium carbide furnace body, the electrode of the middle installation of calcium carbide furnace body, electrode is used to input current to calcium carbide furnace;First blanking column and second blanking column are installed on calcium carbide furnace body side wall, first blanking column and second blanking column middle installation have closed material ware, multiple thread holes are set in the one side of closed material ware, valve stem is installed in each thread hole, outer thread is machined on the outer circumferential surface of valve stem, the outer thread of valve stem is matched with thread hole, valve stem is installed in corresponding thread hole in the way of screwing, one end of valve stem is fixedly connected with connecting piece, the quantity of valve stem can be adjusted according to the size of material.

Description

Technical Field

[0001] This application relates to the field of calcium carbide production equipment technology, specifically to a device for efficiently isolating materials from the feed pipe of a calcium carbide furnace. Background Technology

[0002] In the calcium carbide production industry, the calcium carbide furnace is a core production equipment, and its regular maintenance is a crucial step in ensuring production continuity, safety, and the lifespan of the equipment. In the calcium carbide furnace maintenance process, safely and thoroughly isolating residual material inside the feed pipe is a core preliminary step to prevent secondary risks caused by material leakage, ensure the safety of maintenance personnel, and facilitate the smooth progress of maintenance work.

[0003] Currently, the industry commonly uses φ20mm diameter round steel as the core isolation component for material closure operations in calcium carbide furnace feed pipes, and the operation is entirely manual. During the specific operation, workers must hold a hammer and continuously strike the round steel to embed it into a specific position in the feed pipe to block material flow. This traditional material closure method has significant drawbacks in practical application. The operation requires workers to maintain a specific posture while holding the hammer for an extended period, performing high-frequency, repetitive striking motions. Firstly, the weight of the hammer itself and the reaction force generated by continuous striking place a sustained physical load on the worker's arms, shoulders, and neck, easily leading to occupational health problems such as muscle strain and joint injuries. Secondly, a single material closure operation takes approximately 40 minutes, which is inefficient and delays the overall maintenance schedule. Therefore, a better isolation device is urgently needed.

[0004] The public application CN215478067U discloses an automatic feeding device for the feed pipe of a calcium carbide furnace. This device, through its overall structure, uses a cylinder to move a connecting plate back and forth, which in turn moves various stop levers back and forth, thus blocking or opening the hollow cavity in the middle of the connecting ring, allowing for convenient automatic control of material loading and unloading. However, during the production of calcium carbide, the reaction temperature reaches over 2000℃, and the temperature at the feed pipe can reach 300-500℃. This high-temperature environment easily causes the rubber rings and other seals of the cylinder to fail due to heat, thereby damaging the cylinder's sealing performance. This prevents the device from achieving its intended material sealing and isolation functions, affecting normal operation. Utility Model Content

[0005] In order to solve at least one of the technical defects mentioned above, this application provides a device for efficiently isolating materials in the feed pipe of a calcium carbide furnace.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for efficiently isolating materials from the feed pipe of a calcium carbide furnace, applied to the furnace body. A first feed column and a second feed column are installed on the side wall of the furnace body. A material shut-off device is installed between the first and second feed columns. Multiple threaded holes are opened on one side of the material shut-off device. A valve stem is installed in each threaded hole. The outer circumferential surface of the valve stem is machined with external threads. The external threads of the valve stem match the threaded holes. The valve stem is installed in the corresponding threaded holes by screwing. A connector is fixedly connected to one end of the valve stem. The number of valve stems can be adjusted according to the size of the material.

[0007] Furthermore, an electrode is installed in the middle of the calcium carbide furnace body, and the electrode is used to input current into the calcium carbide furnace.

[0008] Furthermore, multiple first and second feeding columns are provided, and the first and second feeding columns are evenly distributed around the furnace body, with the first and second feeding columns having a certain angle of inclination with the calcium carbide furnace body.

[0009] Furthermore, both the first and second feeding columns are cylindrical, and the first and second feeding columns have the same diameter.

[0010] Furthermore, the material closing device has a circular hole in the middle, and the inner diameter of the circular hole is the same as the inner diameter of the first feeding column and the second feeding column.

[0011] Furthermore, a first connecting flange is provided at the bottom of the first feeding column, and a second connecting flange is provided at the top of the second feeding column. The first connecting flange and the second connecting flange are matched with the shape of the closing device.

[0012] Furthermore, the first connecting flange has multiple first mounting holes, the second connecting flange has multiple second mounting holes, and the material closer has a mating hole. Bolts are sequentially inserted into the first mounting holes, the mating hole, and the second mounting holes, and nuts are screwed onto the ends of the bolts.

[0013] Furthermore, one end of the valve stem extends into the material closing device, and the other end extends out of the material closing device. The connecting piece is located at the extended end of the valve stem, and the connecting piece is connected to an electric wrench. The electric wrench is an existing tool, and multiple valve stems share one electric wrench. The connecting piece is adapted to the output shaft of the electric wrench.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By creating multiple threaded holes on the material closing device and screwing valve stems into these holes, the valve stem rotation is controlled by an electric wrench, replacing the traditional method of manual material closing with a hammer. This avoids the labor injuries, noise, and material splashing risks associated with manual hammering. Simultaneously, the efficient torque output of the electric wrench reduces the material closing time from the traditional 40 minutes to 10-15 minutes, improving work efficiency.

[0016] 2. The number of valve stems in the threaded hole of the material closer can be adjusted according to the size of the material. When the material particles are small, more valve stems are added to fully cover the channel to prevent leakage. When the particles are large, fewer valve stems are added to simplify the operation, ensuring the reliability of material closing and optimizing the operation process.

[0017] 3. The device of this utility model has a simple structure and low cost. It does not require a complex mechanical structure or electrical control system, resulting in low procurement costs. Furthermore, it is convenient to replace damaged parts without the need for professional maintenance personnel, thus reducing the initial investment and daily maintenance costs of the equipment. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is a schematic diagram of the main structure of a calcium carbide furnace with a high-efficiency isolation material feeding pipe provided in an embodiment of this application.

[0020] Figure 2 A schematic diagram showing the disassembled structure of the first feeding column, the second feeding column, and the closing device provided in the embodiments of this application;

[0021] Figure 3 This is a schematic diagram of the installation method of the feeder and valve stem provided in the embodiments of this application;

[0022] Figure 4 This is a schematic diagram of the planar structure of the feeder and valve stem installation method provided in the embodiments of this application;

[0023] Reference numerals in the attached drawings: 1. Calcium carbide furnace body; 2. Electrode; 3. First feeding column; 4. Second feeding column; 5. Material closing device; 6. Valve stem; 7. Connecting component; 31. First connecting flange; 41. Second connecting flange; 51. Threaded hole. Detailed Implementation

[0024] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0025] To address the aforementioned issues, this application provides a device for efficiently isolating materials in the feed pipe of a calcium carbide furnace.

[0026] like Figure 1 As shown, the high-efficiency isolation device for the material in the feed pipe of the calcium carbide furnace in this embodiment is applied to the furnace body 1, and an electrode 2 is installed in the middle of the furnace body 1. The electrode 2 is used to input current into the calcium carbide furnace to generate an electric arc inside the furnace. The high temperature of the electric arc causes the raw materials inside the furnace to undergo a chemical reaction, thereby generating calcium carbide.

[0027] To ensure stable material delivery into the furnace, a first feeding column 3 and a second feeding column 4 are installed on the side wall of the calcium carbide furnace body 1. Multiple first feeding columns 3 and second feeding columns 4 are provided (the specific number is adapted to the furnace's capacity and size). The first feeding columns 3 and second feeding columns 4 are evenly distributed around the furnace body to ensure that the material is evenly distributed to different areas within the furnace body 1, avoiding excessively thick or thin material layers in certain areas. Both the first feeding columns 3 and second feeding columns 4 are cylindrical tubes with the same diameter. Notably, the first feeding columns 3 and second feeding columns 4 are inclined at a certain angle to the calcium carbide furnace body 1. The material enters through the top inlet of the first feeding column 3, and under its own gravity, slides down the inclined inner wall of the feeding column, passing sequentially through the first feeding columns 3 and second feeding columns 4, finally falling precisely into the interior of the calcium carbide furnace body 1, completing the material delivery process.

[0028] like Figures 2-4 As shown, a material stopper 5 is installed between the first feeding column 3 and the second feeding column 4. The material stopper 5 has a circular hole in the middle, and the inner diameter of the circular hole is the same as the inner diameter of the first feeding column 3 and the second feeding column 4.

[0029] A first connecting flange 31 is provided at the bottom of the first feeding column 3, and a second connecting flange 41 is provided at the top of the second feeding column 4. The first connecting flange 31 and the second connecting flange 41 are matched with the shape of the material closing device 5. Multiple first mounting holes are provided on the first connecting flange 31, and multiple second mounting holes are provided on the second connecting flange 41. Correspondingly, a mating hole is provided on the material closing device 5. The first mounting hole, the second mounting hole, and the mating hole are all through holes. During assembly, the operator needs to align the first mounting hole of the first feeding column 3, the mating hole of the material closing device 5, and the second mounting hole of the second feeding column 4. Bolts are sequentially inserted into the first mounting hole, the mating hole, and the second mounting hole, and nuts are screwed onto the ends of the bolts. The first feeding column 3, the material closing device 5, and the second feeding column 4 are connected as a whole by bolts and nuts.

[0030] On one side of the material closing device 5, multiple threaded holes 51 are evenly spaced horizontally. A valve stem 6 is installed in each threaded hole 51, and each valve stem 6 has an external thread machined on its circumferential surface, which matches the internal thread. The valve stem 6 is screwed into the corresponding threaded hole 51. When the valve stem 6 is rotated, it can move along the diameter of the threaded hole 51 of the material closing device 5. Furthermore, a sealing element is provided in the fit clearance between the threaded hole 51 and the valve stem 6 to ensure the sealing performance of the device during operation and prevent material leakage.

[0031] One end of the valve stem 6 extends into the inside of the material closing device 5, and the other end extends out of the outside of the material closing device 5. A connector 7 is fixedly connected to the extended end of the valve stem 6. An electric wrench is mated to the connector 7. The electric wrench is an existing tool, and multiple valve stems 6 share one electric wrench. The connector 7 is adapted to the output shaft of the electric wrench (usually a square or hexagonal interface, adapted to common electric wrench specifications).

[0032] When a material closing operation is required during production, the worker holds an electric wrench, connects the output shaft of the electric wrench to the connector 7, and connects the end of the valve stem 6 to the threaded hole 51 of the material closing device 5. After the connection is completed, the electric wrench is started, and the electric wrench drives the valve stem 6 to rotate, screwing the valve stem 6 into the threaded hole 51, and making the top of each valve stem 6 press against the arc surface of the circular hole of the material closing device 5. Multiple valve stems 6 are screwed into the threaded hole 51 of the material closing device 5 in sequence. Through the combined action of multiple valve stems 6, the channel between the first discharge column 3 and the second discharge column 4 is blocked, and the material closing operation is completed.

[0033] Furthermore, the number of valve stems 6 screwed into the threaded hole 51 of the material closing device 5 can be adjusted according to the size of the material. If the material particles are small, the number of valve stems 6 needs to be increased appropriately to ensure that multiple valve stems 6 can fully cover the circular hole channel and prevent material from leaking through the gaps between the valve stems 6; if the material particles are large, the number of valve stems 6 can be reduced appropriately while ensuring the closing effect, thus simplifying the operation process.

[0034] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0035] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A device for efficiently isolating materials in the feed pipe of a calcium carbide furnace, characterized in that: It is applied to the furnace body (1) of the calcium carbide furnace. A first feeding column (3) and a second feeding column (4) are installed on the side wall of the furnace body (1). A material closing device (5) is installed between the first feeding column (3) and the second feeding column (4). A plurality of threaded holes (51) are opened on one side of the material closing device (5). A valve stem (6) is installed in each threaded hole (51). The outer circumferential surface of the valve stem (6) is machined with external threads. The external threads of the valve stem (6) match the threaded holes (51). The valve stem (6) is installed in the corresponding threaded holes (51) by screwing. A connector (7) is fixedly connected to one end of the valve stem (6). The number of valve stems (6) can be adjusted according to the size of the material.

2. The device for efficiently isolating materials in the feed pipe of a calcium carbide furnace according to claim 1, characterized in that: An electrode (2) is installed in the middle of the calcium carbide furnace body (1), and the electrode (2) is used to input current into the calcium carbide furnace.

3. The device for efficiently isolating materials in the feed pipe of a calcium carbide furnace according to claim 1, characterized in that: Multiple first feeding columns (3) and second feeding columns (4) are provided. The first feeding columns (3) and second feeding columns (4) are evenly distributed around the furnace body, and the first feeding columns (3) and second feeding columns (4) have a certain angle of inclination with the calcium carbide furnace body (1).

4. The device for efficiently isolating materials in the feed pipe of a calcium carbide furnace according to claim 1, characterized in that: Both the first feeding column (3) and the second feeding column (4) are cylindrical, and the first feeding column (3) and the second feeding column (4) have the same diameter.

5. The device for efficiently isolating materials in the feed pipe of a calcium carbide furnace according to claim 1, characterized in that: The closing device (5) has a circular hole in the middle, and the inner diameter of the circular hole is the same as the inner diameter of the first feeding column (3) and the second feeding column (4).

6. The device for efficiently isolating materials in the feed pipe of a calcium carbide furnace according to claim 1, characterized in that: The bottom end of the first feeding column (3) is provided with a first connecting flange (31), and the top end of the second feeding column (4) is provided with a second connecting flange (41). The first connecting flange (31) and the second connecting flange (41) are matched with the shape of the closing device (5).

7. The device for efficiently isolating materials in the feed pipe of a calcium carbide furnace according to claim 6, characterized in that: The first connecting flange (31) has multiple first mounting holes, the second connecting flange (41) has multiple second mounting holes, the material closer (5) has a mating hole, and bolts pass through the first mounting hole, the mating hole and the second mounting hole in sequence, and nuts are screwed onto the ends of the bolts.

8. The device for efficiently isolating materials in the feed pipe of a calcium carbide furnace according to claim 1, characterized in that: One end of the valve stem (6) extends into the inside of the material closing device (5), and the other end extends out of the outside of the material closing device (5). The connector (7) is located at the extended end of the valve stem (6). The connector (7) is connected to an electric wrench. The electric wrench is an existing tool. Multiple valve stems (6) share one electric wrench. The connector (7) is adapted to the output shaft of the electric wrench.

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