A calcium carbide slag spiral reamer discharging chute

Abstract

The utility model relates to a calcium carbide slag screw flight borer discharging chute, and relates to the technical field of calcium carbide slag conveying, and the technical scheme is: including the groove body, the upper portion of groove body is provided with screw flight borer, the import of groove body is connected with the export of screw flight borer, and the import and export of groove body are all connected with sealing assembly, and groove body is trapezoidal and is provided with groove plate, and the outer surface of groove plate is connected with a plurality of rib plate, the beneficial effects of the utility model are: installing trapezoidal groove body below screw flight borer, because the cross section of groove body is trapezoidal structure of upper narrow lower wide, calcium carbide slag does not stick wall easily when cutting line discharging, does not stick on the lateral wall of groove body, improves discharging speed, avoids the situation that material is blocked, and groove body and the export of screw flight borer are sealed through expansion joint and asbestos rope sealing ring, reduce system air leakage, improve drying and crushing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of calcium carbide slag conveying technology, and in particular to a calcium carbide slag spiral auger discharge chute. Background Technology

[0002] Calcium carbide slag is an industrial waste residue produced during the calcium carbide process for acetylene production. Its main component is calcium hydroxide, and its chemical properties are similar to those of limestone in cement raw materials. After high-temperature calcination, it can be converted into calcium oxide, so it can be used as a substitute raw material for cement production.

[0003] The calcium carbide slag contains about 32% water. The original design used a double-layer flap valve airlock feeding process. During normal production, material easily accumulates at the flap valve, causing the screw conveyor current to be too high. The flap valve is also prone to material sticking, requiring frequent cleaning. Moreover, the inspection hole is under negative pressure during cleaning, making it difficult for personnel to clean and posing a significant safety risk. Frequent cleaning can also cause air leakage in the system, increasing the oxygen content at the kiln tail. If the blockage is not cleaned in time, it can cause the screw conveyor to overload and trip, affecting the upstream material supply. In an emergency, opening the spray device may cause blockage at the inlet air duct of the drying crusher, forcing the entire system to shut down. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of current calcium carbide slag, which contains water and easily clumps at the flap valve when falling, making it inconvenient to clean and causing the flap valve to become blocked. Therefore, a calcium carbide slag spiral auger discharge chute is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A spiral auger discharge chute for carbide slag includes a chute body, a spiral auger is arranged above the chute body, the inlet of the chute body is connected to the outlet of the spiral auger, and both the inlet and outlet of the chute body are connected to a sealing assembly. The chute body is trapezoidal in shape and includes a chute plate. Multiple stiffening plates are connected to the outer surface of the chute plate.

[0006] The tank is trapezoidal in shape. Since the carbide slag contains water, these materials will not directly contact the side walls of the tank. This reduces the amount of carbide slag adhering to the side walls of the tank. Some of the slag adheres to the tank body, and as the material increases, it will gradually fall off under the influence of gravity, preventing material blockage. In addition, the stiffeners adopt a "gradually changing" layout, with the spacing between the stiffeners gradually adjusted from 800mm to 600mm. This ensures structural strength while reducing additional resistance to material flow, making the material slide closer to the ideal "gravity flow" state.

[0007] Preferably, an expansion joint is connected to the upper end of the trough, a sealing assembly is located at the connection between the expansion joint and the trough, and the end of the expansion joint away from the trough is connected to the outlet of the auger.

[0008] The sealing component and the expansion joint form a composite sealing structure. The sealing component ensures basic sealing, while the expansion joint can absorb the thermal expansion and contraction displacement of the tank caused by temperature changes, reducing the probability of seal failure and the system air leakage rate, thereby improving the thermal efficiency of the drying system.

[0009] Preferably, the expansion joint includes a bellows, with a first flange and a second flange connected to both ends of the bellows, the first flange being connected to the outlet of the auger and the second flange being connected to the inlet of the tank.

[0010] Preferably, the longitudinal inclination angle of the tank is 35-40°.

[0011] Preferably, the slot plate is provided with multiple inspection ports.

[0012] Preferably, the sealing component is an asbestos rope.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the trapezoidal trough is installed below the spiral auger. Since the cross-section of the trough is a trapezoidal structure that is narrow at the top and wide at the bottom, the carbide slag is not easy to stick to the wall when cutting the material and will not stick to the side wall of the trough, thereby improving the feeding speed and avoiding material blockage. In addition, the outlets of the trough and the spiral auger are sealed by expansion joints and asbestos rope sealing rings, reducing system air leakage and improving drying and crushing efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the expansion joint in a specific embodiment of the present invention.

[0017] Figure 3 This is a top view of the tank in a specific embodiment of the present invention.

[0018] In the diagram: 1. Spiral auger; 2. Expansion joint; 3. Groove; 4. Sealing assembly; 5. Inspection port; 301. Rib plate; 302. Groove plate; 401. Bellows; 402. First flange; 403. Second flange. Detailed Implementation

[0019] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0020] Reference Figures 1-3 A spiral auger discharge chute for carbide slag includes a chute body 3, with a spiral auger 1 mounted on top of the chute body 3. The inlet of the chute body 3 is connected to the outlet of the spiral auger 1, and the outlet of the chute body 3 is connected to a drying and crushing machine. Both the inlet and outlet of the chute body 3 are connected to sealing components 4. The chute body 3 is trapezoidal in shape. Due to its trapezoidal cross-section (narrower at the top and wider at the bottom), the carbide slag is less likely to stick to the walls during material feeding and will not adhere to the sidewalls of the chute body 3. Even if it does stick, the increased weight will cause the carbide slag to fall automatically. The width of the upper end of the chute body 3 is matched with the outer diameter of the spiral auger 1 blades. The anti-sticking angle of the chute body 3 is determined based on the auger speed and material moisture content fluctuations to ensure consistent material flow. Under operating conditions, the material is discharged uniformly and stably. The longitudinal inclination angle of the tank body 3 is 35-40°, and the dynamic angle of repose of the carbide slag is 32°. The longitudinal inclination angle of the tank body 3 is greater than the dynamic angle of repose of the carbide slag, ensuring that the material flows down by gravity. The tank body 3 includes a tank plate 302, which is the main body and is made of Q235B steel plate. Multiple stiffeners 301 are connected to the outer surface of the tank plate 302. The stiffeners 301 are made of M8 stainless steel plate and adopt a "gradually changing" layout. From the top to the bottom of the tank plate 302, the spacing of the stiffeners 301 is gradually adjusted from 800mm to 600mm, which not only ensures the structural strength but also reduces the additional resistance to the material flow, making the material flow closer to the ideal state of "gravity".

[0021] Reference Figures 1-3 An expansion joint 2 is connected to the upper end of the tank body 3. The expansion joint 2 includes a bellows 401. The two ends of the bellows 401 are respectively connected to a first flange 402 and a second flange 403. The first flange 402 is connected to the outlet of the spiral cutter 1, and the second flange 403 is connected to the inlet of the tank body 3. The end of the expansion joint 2 away from the tank body 3 is connected to the outlet of the spiral cutter 1. The sealing component 4 is an asbestos rope. The asbestos rope and the expansion joint 2 form a composite sealing structure. The asbestos rope ensures the basic seal, and the expansion joint 2 can absorb the thermal expansion and contraction displacement of the tank body 3 caused by temperature changes, thereby reducing the probability of seal failure and the system air leakage rate, thus improving the thermal efficiency of the drying system.

[0022] Reference Figures 1-3The trough plate 302 is equipped with multiple inspection ports 5. The inspection port 5 covers are fixed by a rotating mechanism, making them easy to open and close. Each inspection port 5 has an observation window with an embedded nano self-cleaning coating, which reduces the adhesion of carbide slag dust and allows inspection personnel to easily check the internal working condition. In addition, an "anti-blocking material cleaning interface" is preset at the bottom of the chute. When the negative pressure monitoring shows a change, the central control operator will prompt on-site inspection and handling, ensuring the chute remains unobstructed in advance, making operation and maintenance more efficient and preventative.

[0023] During use, the auger 1 conveys the carbide slag to the top of the tank 3, where it falls directly into the tank 3. Because the tank 3 has a trapezoidal cross-section that is narrower at the top and wider at the bottom, the carbide slag is less likely to stick to the walls when cutting the material and will not adhere to the side walls of the tank 3. The width of the upper end of the tank 3 is matched with the outer diameter of the blades of the auger 1. The anti-sticking angle of the tank 3 is determined according to the auger speed and the fluctuation of the material moisture content to ensure uniform and stable material discharge under different working conditions. The longitudinal inclination angle of the tank 3 is 35-40°, and the dynamic angle of repose of the carbide slag is 32°. The longitudinal inclination angle of the tank 3 is greater than the dynamic angle of repose of the carbide slag to ensure that the material flows down by gravity.

[0024] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A screw auger discharge chute for carbide slag, characterized in that: The system includes a trough (3), a spiral cutter (1) is provided above the trough (3), the inlet of the trough (3) is connected to the outlet of the spiral cutter (1), and both the inlet and outlet of the trough (3) are connected to a sealing assembly (4). The trough (3) is trapezoidal in shape and includes a trough plate (302). Multiple stiffeners (301) are connected to the outer surface of the trough plate (302).

2. The carbide slag spiral auger discharge chute according to claim 1, characterized in that: An expansion joint (2) is connected to the upper end of the trough (3), and a sealing assembly (4) is located at the connection between the expansion joint (2) and the trough (3). The end of the expansion joint (2) away from the trough (3) is connected to the outlet of the spiral cutter (1).

3. The carbide slag spiral auger discharge chute according to claim 2, characterized in that: The expansion joint (2) includes a bellows (401), with a first flange (402) and a second flange (403) connected to both ends of the bellows (401). The first flange (402) is connected to the outlet of the spiral auger (1), and the second flange (403) is connected to the inlet of the tank (3).

4. The carbide slag spiral auger discharge chute according to claim 1, characterized in that: The longitudinal tilt angle of the tank (3) is 35-40°.

5. The carbide slag spiral auger discharge chute according to claim 1, characterized in that: Multiple inspection ports (5) are provided on the slot plate (302).

6. The carbide slag spiral auger discharge chute according to claim 1, characterized in that: The sealing component (4) is an asbestos rope.

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