Anti-blocking device for feeding pipe of ball mill

Abstract

The utility model discloses an anti-blocking device for a feeding pipe of a ball mill, and belongs to the technical field of metallurgical industry equipment. Comprising a boiling pipe, the boiling pipe is inserted in an elbow of a feeding articulated chute, a plurality of blowing holes are formed in the boiling pipe, a sealing end cover is arranged at the outer end of the boiling pipe, and a sealing check ring is arranged on the inner side face of the sealing end cover. The utility model can improve the flowability of the roasted sand and ensure that the roasted sand smoothly enters the ball mill. According to the utility model, the production stability can be improved. According to the utility model, the production cost can be reduced. The air outlet of the device is directly communicated with the cavity of the ball mill, the device structure cannot be damaged in use, the inner wall of the feeding chute can be kept smooth after purging, no roasted sand adheres to the feeding chute, the labor amount and the labor intensity of manual dredging through a steel chisel after blockage in the past are reduced, and the service life of the feeding chute is effectively prolonged.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical industrial equipment technology, specifically to a ball mill feed pipe anti-clogging device, which is particularly suitable for handling the problem of feed port blockage caused when calcined sand produced by fluidized bed roasting furnace enters a dry grate ball mill for grinding. Background Technology

[0002] Dry grate-type ball mills are widely used in the non-ferrous metallurgical industry due to their strong continuous production capacity, high output, and high degree of mechanization. Their function is to further grind calcined sand (particle size -200 > 60%) produced by fluidized bed roasting furnaces to meet the requirements of subsequent wet roasting processes (particle size -200 mesh approximately 80%, -80 mesh > 98%). The feeding section consists of a feed hopper and a feed chute. A scraper conveyor transports the calcined sand to the feed hopper, which then flows into the ball mill chamber for grinding before being discharged (see attached image). Figure 1 Because the calcined sand has a certain degree of viscosity, it adheres to and gradually accumulates in the bend section of the feed chute, causing the inner diameter of the bend to gradually shrink until it is completely blocked, which seriously affects the continuity and stability of the system's production. Summary of the Invention

[0003] The purpose of this invention is to provide a ball mill feed pipe anti-clogging device to solve the problems mentioned in the background art.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A ball mill feed pipe anti-clogging device includes a boiling tube, which is inserted into the bend of the feed chute. The boiling tube has several blowing holes and a sealing end cap is provided on the outer end of the boiling tube. A sealing ring is provided on the inner side of the sealing end cap.

[0006] The boiling tube is made of a steel pipe with a diameter of 20mm, and has a row of blowing holes spaced 50mm apart.

[0007] The sealing end cap is cut into a circular plate structure from a 5mm thick steel plate. The boiling tubes pass through the through hole in the center of the sealing end cap and are welded together. Four mounting holes are evenly distributed around the edge of the sealing end cap.

[0008] The sealing ring is made of a steel plate with a thickness of 5mm and a width of 50mm, and the sealing ring is welded to the inner side of the sealing end cap.

[0009] The feed chute has a through hole on the back of the elbow. An installation tube is welded to the outer wall of the feed chute at the through hole. The boiling tube is inserted into the feed chute through the through hole. The sealing ring is inserted into the installation tube. The sealing end cap is connected and fixed to the installation tube by bolts.

[0010] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0011] 1. This invention improves the flowability of calcined sand. Compressed air purging effectively prevents the adhesion and accumulation of calcined sand due to its stickiness, significantly improving its flowability and ensuring smooth entry into the ball mill.

[0012] 2. This invention can improve production stability. This device optimizes the ball mill feeding process, effectively avoids blockage of the ball mill feed chute, helps maintain smooth feeding of the ball mill, ensures the stability of the production process, and improves production efficiency.

[0013] 3. This utility model can reduce production costs. The air outlet of this device is directly connected to the ball mill cavity, which will not cause damage to the equipment structure during use. After purging, the inner wall of the feed chute can be kept smooth and free of calcined sand. This not only reduces the labor and intensity of manually clearing blockages with steel rods, but also effectively extends the service life of the feed chute. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the ball mill feeding system.

[0015] Figure 2 This is a schematic diagram of the structure of this utility model;

[0016] In the diagram: 1—blowing hole; 2—boiling tube; 3—sealing ring; 4—sealing end cap; 5—feed funnel; 6—feed chute; 7—feed pipe anti-clogging device; 8—support column. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example 1

[0020] like Figure 1-2 This embodiment provides a ball mill feed pipe anti-clogging device, including a boiling pipe 2, which is inserted into the bend of the feed chute 6. The boiling pipe 2 has several blowing holes 1, and a sealing end cap 4 is provided on the outer end of the boiling pipe 2. A sealing retaining ring 3 is provided on the inner side of the sealing end cap 4.

[0021] In this embodiment, the boiling tube 2 is made of a 20mm diameter steel pipe, and its length is preferably from the center of the elbow of the feed chute 6 to the external compressed air inlet point. Starting from the inner end, a single row of blowing holes is drilled every 50mm using an M5 drill bit on the steel pipe. The length of the drilled section of the steel pipe is determined according to the inner diameter of the feed chute, specifically the same length as the inner radius of the elbow of the feed chute 6.

[0022] In this embodiment, the sealing end cap 4 is made of 5mm thick steel plate cut into a circular plate structure with a through hole in the center. The boiling tube 2 passes through the through hole in the center of the sealing end cap 4 and is welded to each other. The outer end of the boiling tube 2 is 100mm away from the sealing end cap 4. Four mounting holes are evenly distributed around the edge of the sealing end cap 4, with the hole diameter being suitable for M12 bolts.

[0023] The sealing ring 3 is formed by welding a steel plate with a thickness of 5mm and a width of 50mm, and the sealing ring 3 is welded to the inner side of the sealing end cover 4.

[0024] The feed chute 6 has a through hole on the back of the elbow. A 5mm thick steel plate installation pipe is welded to the outer wall of the feed chute 6 at the through hole. The boiling pipe 2 is inserted into the feed chute 6 through the through hole. The sealing ring 3 can be embedded in the installation pipe. The sealing end cap 4 is placed on the installation pipe and connected and fixed to the installation pipe with bolts. The specific installation pipe end is provided with a flange plate for easy connection.

[0025] In use, the sealing end cap of the anti-clogging device is connected to the mounting pipe on the feed chute by bolts, with the blowing hole on the boiling tube facing upwards during installation. Compressed air at 0.4-0.6 MPa is connected to the boiling tube extending from the sealing end cap through a high-pressure rubber hose, and a controllable valve is installed.

[0026] During production, compressed air enters the feed chute bend through the boiling pipe and exits from the boiling pipe port and the upper blowing hole. The air outlet at the boiling pipe port increases the flow velocity of the roasted sand, allowing it to be directly blown into the ball mill chamber, preventing accumulation at the chute bend. The upper blowing hole in the boiling pipe ensures the roasted sand is in a micro-boiling fluidized state within the chute, facilitating easier flow and transport.

Claims

1. A ball mill feed pipe anti-clogging device, characterized in that, It includes a boiling tube (2), which is inserted at the bend of the feed chute (6). The boiling tube (2) has several blowing holes (1) and a sealing end cap (4) is provided on the outer end of the boiling tube (2). A sealing retaining ring (3) is provided on the inner side of the sealing end cap (4).

2. The anti-clogging device for the feed pipe of a ball mill according to claim 1, characterized in that: The boiling tube (2) is made of a steel pipe with a diameter of 20 mm and has a row of blowing holes (1) spaced 50 mm apart.

3. The anti-clogging device for the feed pipe of a ball mill according to claim 1, characterized in that: The sealing end cap (4) is cut into a circular plate structure from a steel plate with a thickness of 5mm. The boiling tube (2) passes through the through hole in the center of the sealing end cap (4) and is welded to each other. Four mounting holes are evenly distributed around the edge of the sealing end cap (4).

4. The anti-clogging device for the feed pipe of a ball mill according to claim 1, characterized in that: The sealing ring (3) is made of a steel plate with a thickness of 5 mm and a width of 50 mm, and the sealing ring (3) is welded to the inner side of the sealing end cap (4).

5. The anti-clogging device for the feed pipe of a ball mill according to claim 1, characterized in that: The feed chute (6) has a through hole on the back of the elbow. An installation tube is welded to the outer wall of the feed chute (6) at the through hole. The boiling tube (2) is inserted into the feed chute (6) through the through hole. The sealing ring (3) is inserted into the installation tube. The sealing end cap (4) is connected and fixed to the installation tube by bolts.

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