Novel tube mill feeding sealing device

Abstract

The utility model discloses a novel tube mill feed sealing device which comprises a barrel, a hopper and a feed box, the hopper is arranged at a feed port of the barrel, a material pushing plate is arranged on the inner surface of the hopper, the feed end of the feed box extends into the hopper, a material guiding plate is arranged in the feed box, and a labyrinth sealing assembly is arranged on the inner surface of the outer end of the hopper. The labyrinth sealing assembly comprises an inner sealing ring and an outer sealing ring, gaps are reserved between the inner sealing ring and the feeding box, gaps are reserved between the outer sealing ring and the feeding box, the inner sealing ring and the outer sealing ring are arranged at intervals, a movable sealing ring is welded to one end of the hopper, a static sealing ring is welded to the discharging end of the feeding box, and the movable sealing ring makes direct contact with the static sealing ring. The movable sealing ring is made of an elastic material, and the guide plate adopts a segmented structural design; a material pushing plate, a labyrinth sealing assembly and a movable sealing ring are designed on the hopper, the material pushing plate solves the problem of movement of 99% of materials, the labyrinth sealing assembly solves the problem of accidental particle material overflow, and the movable sealing ring solves the dust emitting phenomenon of dust gas.

Description

Technical Field

[0001] The utility model relates to the technical field of mill feeding, in particular to a novel feeding sealing device for a tube mill. Background Technique

[0002] The feeding device and the feeding hopper of the tube mill are equipment parts and important components of the grinding equipment, which are convenient for conveying materials into the cylinder body inside the tube mill. However, the existing technology has the following disadvantages: the existing feeding conical hopper only plays the role of conveying materials. Although the materials can flow into the cylinder body by relying on the height difference of material accumulation, which can meet the use of the tube mill, there are still a small amount of materials flowing out of the feeding device and the feeding hopper and emerging from the blind angle space, which has an adverse impact on the physical health of workers and even destroys the on-site working environment. Chinese Patent Application No. 201921589429.3 discloses a grinding head device for a ball mill, including a feeding pipe, and the feeding section of the feeding pipe of the mill is arranged inside the feeding port of the mill. There is a baffle sealing structure between the feeding section and the feeding port of the mill. The feeding section of the feeding pipe is arranged inside the feeding port of the mill. Only relying on the baffle sealing structure, there will still be the phenomenon of dust gas leakage. Moreover, relying on the height difference of material accumulation to flow into the cylinder body, the feeding efficiency is low and it is more likely to occur the situation of material overflow. Similarly, Chinese Patent Application No. 202021884505.6 discloses a novel feeding sealing device for a mill, including a feeding bushing, a rubber pad, a double-layer water return ring, a dynamic sealing ring, a static sealing ring, a feeding elbow pipe and a gland, and there are also the above problems. Therefore, a novel feeding sealing device for a tube mill is proposed to solve the above problems. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a novel feeding sealing device for a tube mill. The mutual cooperation of the labyrinth sealing assembly, the pushing plate and the dynamic sealing ring can effectively convey the accumulated materials, gases, etc. into the cylinder body at a uniform speed, thereby improving the operation environment and preventing the waste of materials, and can effectively solve the problems in the background technique.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: a novel feeding sealing device for a tube mill, including a cylinder body, a hopper and a feeding box. A hopper is arranged at the feeding port of the cylinder body. A pushing plate is arranged on the inner surface of the hopper. The feeding end of the feeding box extends into the hopper. A guiding plate is arranged inside the feeding box. A labyrinth sealing assembly is arranged on the inner surface of the outer end of the hopper. The labyrinth sealing assembly includes an inner sealing ring and an outer sealing ring. There are gaps between the inner sealing ring and the outer sealing ring and the feeding box respectively. The inner sealing ring and the outer sealing ring are arranged at intervals. A dynamic sealing ring is welded to one end of the hopper. A static sealing ring is welded to the discharging end of the feeding box. The dynamic sealing ring is in direct contact with the static sealing ring. The dynamic sealing ring is made of an elastic material.

[0005] Furthermore, the material guiding plate is designed with a segmented structure. The material guiding plate includes an upper material guiding plate and a lower material guiding plate. The inclination angles of the upper material guiding plate and the lower material guiding plate are inconsistent. The lower end of the upper material guiding plate is located above the upper end of the lower material guiding plate, and the lower end of the lower material guiding plate extends into the hopper.

[0006] Furthermore, the cross-section of the hopper is set as a trapezoidal structure, and the hopper is fixed to the cylinder body by screws.

[0007] Furthermore, the pushing plates are evenly arranged on the inner surface of the hopper, and the pushing plates are connected to the hopper by welding.

[0008] Furthermore, an annular cover is arranged on the outer side of the static seal ring. The annular cover is fixedly welded to the feed box, and a powder discharge port is arranged at the bottom of the annular cover.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] 1. The pushing plates, labyrinth seal components and dynamic seal rings are designed on the hopper. The pushing plates solve the problem of the movement of 99% of the materials. The labyrinth seal components solve the problem of accidental overflow of particulate materials, and the dynamic seal rings solve the problem of dust emission of dust gas.

[0011] 2. The structural design has high strength. The material guiding plate is designed in segments, which can reduce the length of the material guiding plate, increase the structural strength and prevent deformation. The annular cover collects a small amount of overflowing dust and reduces environmental pollution.

[0012] 3. Due to the rotation function of the hopper itself, the materials can be forced to be pushed into the interior of the cylinder body through the pushing plates, reducing the residence time of the materials and ensuring the possibility that the materials will not overflow everywhere. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is an enlarged schematic structural diagram of part A of the present utility model.

[0015] In the figure: 1 cylinder body, 2 inner seal ring, 3 static seal ring, 4 lower material guiding plate, 5 feed box, 6 upper material guiding plate, 7 pushing plate, 8 hopper, 9 powder discharge port, 10 dynamic seal ring, 11 outer seal ring, 12 annular cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the azimuth or positional relationships shown in the drawings. These are only for the convenience of describing the present utility model and do not indicate or imply that the device or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as a limitation to the present utility model.

[0017] Please refer to Figure 1-2 , the present utility model provides a technical solution: a novel feed sealing device for a tube mill, which includes a cylinder body 1, a hopper 8 and a feed box 5. A hopper 8 is provided at the feed port of the cylinder body 1. A pushing plate 7 is provided on the inner surface of the hopper 8. Due to its own rotation function, the hopper 8 can forcibly push the material into the interior of the cylinder body 1 through the pushing plate 7, reducing the residence time of the material and ensuring the possibility that the material will not overflow everywhere. The feed end of the feed box 5 extends into the hopper 8. A guiding plate is provided inside the feed box 5. The material is guided to the hopper 8 through the guiding plate 4. A labyrinth sealing assembly is provided on the inner surface of the outer end of the hopper 8. The labyrinth sealing assembly includes an inner sealing ring 2 and an outer sealing ring 11. There are gaps between the inner sealing ring 2 and the outer sealing ring 11 and the feed box 5 respectively. The inner sealing ring 2 and the outer sealing ring 11 are arranged at intervals. At the mating part of the feed box 5 and the hopper 8, that is, where the labyrinth sealing assembly is provided, there is an angular blind area space. Without the labyrinth sealing assembly, when the material particles overflow, they are likely to stay in the angular blind area space. If the material particles are larger, they will block the angular blind area space and cause friction with the feed box 5. Long-term friction will damage the equipment. The above problems can be effectively solved by the inner sealing ring 2 and the outer sealing ring 11. A dynamic sealing ring 10 is welded to one end of the hopper 8, and a static sealing ring 3 is welded to the discharge end of the feed box 5. The dynamic sealing ring 10 is in direct contact with the static sealing ring 3. The dynamic sealing ring 10 is made of an elastic material, such as plastic, rubber, spring steel, etc. The dynamic sealing ring 10 rotates relative to the feed box 5. The elastic sealing design of the dynamic sealing ring 10 itself makes the dynamic sealing ring 10 and the feed box 5 form a sealed space, ensuring that there will be no dust emission of micro-particles or dust gas.

[0018] The guiding plate adopts a segmented structure design. The guiding plate includes an upper guiding plate 6 and a lower guiding plate 4. The inclination angles of the upper guiding plate 6 and the lower guiding plate 4 are inconsistent. The lower end of the upper guiding plate 6 is above the upper end of the lower guiding plate 4. The segmented design of the guiding plate can reduce the length of the guiding plate, increase the structural strength and prevent deformation. The lower end of the lower guiding plate 4 extends into the hopper 8.

[0019] The cross-section of the hopper 8 is set as a trapezoidal structure. The hopper 8 is fixed to the cylinder body 1 by screws, and the material can slide down on the hopper 8 into the cylinder body 1, improving the feeding efficiency.

[0020] The pushing plate 7 is evenly arranged on the inner surface of the hopper 8, and the pushing plate 7 is connected to the hopper 8 by welding.

[0021] An annular cover 12 is arranged on the outer side of the static seal ring 3. The annular cover 12 is fixedly welded to the feed box 5. A powder discharge port 9 is arranged at the bottom of the annular cover 12. During the long-term operation of the tube mill, it is inevitable that a small amount of dust will overflow. The annular cover 12 collects this part of the dust, reducing environmental pollution. The collected dust is discharged through the powder discharge port 9. A valve can be arranged at the powder discharge port 9 to perform the powder discharge work regularly.

[0022] This sealing device is mainly divided into three parts. One is the feed box 5, one is the hopper 8, and the third is the cylinder body 1. During the installation of the equipment, materials flow from the upper end of the feed box 5 into the hopper 8 through the guide plate. The materials in the hopper 8 are forced by the pushing plate 7 into the inside of the cylinder body 1 through the rotation of the cylinder body 1. Sealing devices are designed at each connection to well prevent the leakage and dust emission of materials.

[0023] The above shows and describes the basic principles, main features and advantages of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model has various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A new type of feed sealing device for a tube mill, comprising a cylinder body (1), a hopper (8) and a feed box (5), characterized in that: A hopper (8) is provided at the feed inlet of the cylinder body (1). A pushing plate (7) is provided on the inner surface of the hopper (8). The feed end of the feed box (5) extends into the hopper (8). A material guiding plate is provided inside the feed box (5). A labyrinth seal assembly is provided on the inner surface at the outer end of the hopper (8). The labyrinth seal assembly includes an inner seal ring (2) and an outer seal ring (11). There are gaps between the inner seal ring (2) and the outer seal ring (11) and the feed box (5) respectively. The inner seal ring (2) and the outer seal ring (11) are arranged at intervals. A dynamic seal ring (10) is welded to one end of the hopper (8). A static seal ring (3) is welded to the discharge end of the feed box (5). The dynamic seal ring (10) is in direct contact with the static seal ring (3). The dynamic seal ring (10) is made of an elastic material.

2. The novel feed sealing device for a tube mill according to claim 1, characterized in that: The material guiding plate is designed with a segmented structure. The material guiding plate includes an upper material guiding plate (6) and a lower material guiding plate (4). The inclination angles of the upper material guiding plate (6) and the lower material guiding plate (4) are inconsistent. The lower end of the upper material guiding plate (6) is located above the upper end of the lower material guiding plate (4). The lower end of the lower material guiding plate (4) extends into the hopper (8).

3. A novel feeding and sealing device for a tube mill according to claim 1, characterized in that: The cross-section of the hopper (8) is set as a trapezoidal structure. The hopper (8) is fixed to the cylinder body (1) by screws.

4. A novel feed sealing device for a tube mill according to claim 1, characterized in that: The pushing plates (7) are evenly arranged on the inner surface of the hopper (8). The pushing plates (7) are connected to the hopper (8) by welding.

5. A novel feed sealing device for a tube mill according to claim 1, characterized in that: An annular cover (12) is provided on the outside of the static seal ring (3). The annular cover (12) is fixedly welded to the feed box (5). A powder discharge port (9) is provided at the bottom of the annular cover (12).

Images