Automatic unblocking device for slag vertical mill feeding chute

Abstract

The utility model belongs to the vertical mill technical field, concretely relates to a kind of automatic unblocking device on the feeding chute of slag vertical mill, including vertical mill shell, feeding chute is provided on the vertical mill shell, the inside fixedly connected with connecting pipe of the vertical mill shell, the inside of the vertical mill shell is provided with mill inner chute tongue board, connecting pipe is provided on the mill inner chute tongue board, air storage bag is provided on the connecting pipe, flow control valve is provided on the connecting pipe, nozzle is provided on the connecting pipe, nozzle is provided on the mill inner chute tongue board, the outside of the feeding chute is provided with sealing mechanism. By design feeding chute, air storage bag, connecting pipe, flow control valve, nozzle and mill inner chute tongue board etc. component, the inside of feeding chute on device is easy to block material to the characteristics such as the accumulation of different moisture of material into mill, cohere, block etc. have the problem of better adaptability.

Description

Technical Field

[0001] This utility model relates to the field of vertical mill technology, specifically to an automatic unblocking device for the feed chute of a slag vertical mill. Background Technology

[0002] A vertical slag mill is a device used for grinding slag, commonly found in cement production lines. Its vertical structure effectively grinds the slag to the required fineness and particle size. The entire unit's conveying system ensures timely and efficient transport of the crushed slag to the next process stage, improving production efficiency. This type of vertical slag mill plays a crucial role in cement production, contributing to improved cement quality and production efficiency. However, in existing technology, the tilt angle of the chute plate in the original feeding device is relatively small, approximately 60 degrees. Because industrial lithium slag has a moisture content of 10-15%, high water content, and is composed of fine, dense powder particles with extremely poor flowability, material blockage has repeatedly occurred inside the feeding chute, causing production accidents requiring material removal and unblocking in the slag vertical mill. This severely restricts the normal production of the mill. Statistics show that normal production can only be maintained for about 2 hours per shift, after which manual unblocking is required before production can resume. Due to the large amount of material blockage inside the feeding chute, manual unblocking is labor-intensive and slow, with high risks during night shifts, and it is impossible to restore normal production quickly and promptly. Therefore, the mill's heating system, conveying system, ventilation system, and other equipment must operate in a no-load state for extended periods, resulting in high electricity costs. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this invention is to provide an automatic unblocking device for the feed chute of a slag vertical mill, which solves the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an automatic unclogging device for a slag vertical mill feed chute, comprising a vertical mill housing, a feed chute disposed on the vertical mill housing, a connecting pipe fixedly connected inside the vertical mill housing, a mill inner chute tongue plate disposed inside the vertical mill housing, a connecting pipe disposed on the mill inner chute tongue plate, an air reservoir disposed on the connecting pipe, a flow control valve disposed on the connecting pipe, a nozzle disposed on the connecting pipe, a nozzle disposed on the mill inner chute tongue plate, and a sealing mechanism disposed on the outside of the feed chute.

[0005] Preferably, the sealing mechanism includes a support sleeve. The support sleeve is fixedly connected to the outer side of the feeding chute and contacts the connecting pipe. A screw is rotatably connected inside the support sleeve, and a threaded sleeve is threadedly connected to the outer side of the screw. A connecting sleeve is fixedly connected to the threaded sleeve and contacts the support sleeve. A guide groove is formed inside the support sleeve, and a guide block is slidably connected inside the guide groove. The guide block is fixedly connected to the connecting sleeve. A sealing sleeve is fixedly connected to the connecting sleeve and contacts the support sleeve and the feeding chute. Rotating the screw and threaded sleeve causes threaded movement, which moves the threaded sleeve and drives the sealing sleeve and other components to move. The sealing sleeve then contacts the feeding chute, thereby sealing the connection between the feeding chute and the connecting pipe, preventing the connection between the feeding chute and the connecting pipe from becoming sealed, thus facilitating the use of the device.

[0006] Preferably, a handle is fixedly connected to the screw, and the handle contacts the support sleeve. By designing the handle, the screw can be driven to rotate.

[0007] Preferably, a bearing is fixedly sleeved inside the support sleeve, and a screw is fixedly sleeved inside the inner ring of the bearing. By designing the bearing, the screw can be supported to rotate.

[0008] Preferably, there are two guide blocks, which are symmetrically distributed inside the support sleeve. By designing the guide blocks, the connecting sleeve can be guided.

[0009] Preferably, the guide block has a guide rod slidably connected inside, and the two ends of the guide rod are fixedly connected to the support sleeve. By designing the guide rod, the connecting sleeve can be guided.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. This utility model optimizes the design of components such as the feeding chute, air reservoir, connecting pipe, flow control valve, nozzle, and inner chute tongue plate of the vertical mill by setting five air-blowing cleaning points inside the feeding chute. Each air-blowing point is staggered horizontally and vertically, and directly blows air into the easily blocked areas inside the chute to automatically clear blockages. The new cleaning device starts at fixed times and points, effectively solving the problem of easy material blockage inside the feeding device chute and production accidents caused by material stoppage and blockage in slag vertical mills. The start and stop control of this new cleaning device is interlocked with the pressure value output of the newly installed pressure transmitter in the upper cavity of the feeding chute, which is DCS automated control, eliminating the original manual cleaning operation. Machines replace humans, reducing the labor intensity and operational hazards of workers. This new cleaning device can adjust the cleaning time and blowing force according to the ease with which different materials accumulate and block the chute, and has good adaptability to the accumulation, adhesion, and blockage characteristics of materials entering the mill with different moisture content.

[0012] 2. This utility model designs components such as a support sleeve, screw, handle, bearing, threaded sleeve, and connecting sleeve. Rotating the screw and threaded sleeve causes threaded movement, which in turn moves the sealing sleeve and other components. The sealing sleeve then contacts the feeding chute, thereby sealing the connection between the feeding chute and the connecting pipe. This prevents the connection between the feeding chute and the connecting pipe on the device from being sealed, making the device easy to use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This utility model Figure 1 nozzle illustration Figure 1 ;

[0015] Figure 3 This utility model Figure 1 nozzle illustration Figure 2 ;

[0016] Figure 4 This utility model Figure 1 Enlarged view of point A.

[0017] In the diagram: 1. Vertical mill casing; 2. Feed chute; 3. Air reservoir; 4. Connecting pipe; 5. Flow control valve; 6. Nozzle; 7. Inner mill chute tongue plate; 8. Sealing mechanism; 81. Support sleeve; 82. Screw; 83. Handle; 84. Bearing; 85. Threaded sleeve; 86. Connecting sleeve; 87. Guide groove; 88. Guide block; 89. Guide rod; 810. Sealing sleeve. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-4 An automatic unblocking device for a slag vertical mill feed chute includes a vertical mill housing 1, a feed chute 2 installed on the vertical mill housing 1, a connecting pipe 4 fixedly connected inside the vertical mill housing 1, an inner chute tongue plate 7 installed inside the vertical mill housing 1, a connecting pipe 4 installed on the inner chute tongue plate 7, an air reservoir 3 installed on the connecting pipe 4, a flow control valve 5 installed on the connecting pipe 4, a nozzle 6 installed on the connecting pipe 4, a nozzle 6 installed on the inner chute tongue plate 7, and a sealing mechanism 8 installed on the outer side of the feed chute 2.

[0020] Please see Figure 4 The sealing mechanism 8 includes a support sleeve 81. The support sleeve 81 is fixedly connected to the outside of the feeding chute 2. The support sleeve 81 is in contact with the connecting pipe 4. A screw 82 is rotatably connected inside the support sleeve 81. A handle 83 is fixedly connected to the screw 82. The handle 83 is in contact with the support sleeve 81. By designing the handle 83, the screw 82 can be driven to rotate. A bearing 84 is fixedly sleeved inside the support sleeve 81. The screw 82 is fixedly sleeved inside the inner ring of the bearing 84. By designing the bearing 84, the screw 82 can be supported to rotate. A threaded sleeve 85 is threadedly connected to the outside of the screw 82. A connecting sleeve 86 is fixedly connected to the threaded sleeve 85. The connecting sleeve 86 is in contact with the support sleeve 81. A guide groove 87 is opened inside the support sleeve 81. A guide block 88 is slidably connected inside the guide groove 87. There are two guide blocks 88. The two guide blocks 88 are symmetrically distributed inside the support sleeve 81. By designing the guide blocks 88, the connecting sleeve 86 can be guided.

[0021] Please see Figure 4 The guide block 88 has a guide rod 89 slidably connected inside. The two ends of the guide rod 89 are fixedly connected to the support sleeve 81. By designing the guide rod 89, the connecting sleeve 86 can be guided. The guide block 88 is fixedly connected to the connecting sleeve 86. A sealing sleeve 810 is fixedly connected to the connecting sleeve 86. The sealing sleeve 810 is in contact with the support sleeve 81 and the feeding chute 2. By rotating the screw 82 and the threaded sleeve 85, a threaded movement occurs. The movement of the threaded sleeve 85 drives the sealing sleeve 810 and other components to move. The sealing sleeve 810 moves and contacts the feeding chute 2, thereby sealing the connection between the feeding chute 2 and the connecting pipe 4. This prevents the connection between the feeding chute 2 and the connecting pipe 4 on the device from being sealed, making the device easy to use.

[0022] The specific implementation process of this utility model is as follows: Before using the device, rotate the handle 83. The rotation of the handle 83 drives the screw 82 to rotate. The rotation of the screw 82 causes threaded movement with the threaded sleeve 85, which in turn causes the threaded sleeve 85 to have a relative displacement. The movement of the threaded sleeve 85 drives the connecting sleeve 86 to move. The movement of the connecting sleeve 86 drives the guide block 88 and the sealing sleeve 810 to move. The sealing sleeve 810 moves and contacts the feeding chute 2, thereby sealing the connection between the feeding chute 2 and the connecting pipe 4. This prevents the connection between the feeding chute 2 and the connecting pipe 4 on the device from being sealed, making the device easy to use.

[0023] Five cleaning points are optimized and set inside the feed chute 2 of the vertical mill. Each nozzle has 6 openings arranged horizontally and vertically in a staggered manner. The nozzles 6 directly and automatically pneumatically clean the easily blocked areas inside the chute. The new cleaning device can start at fixed time and fixed point, which effectively solves the production accident of material blockage inside the feed chute 2 and material stoppage and cleaning of the slag vertical mill. The nozzles 6 have a specific duckbill flat mouth shape, which has superior performance such as energy saving, air saving and strong blowing power.

[0024] The start-stop control of this device is interlocked with the pressure value output of the newly installed pressure transmitter in the upper cavity of the feeding chute 2, which is a DCS automated control, eliminating the original manual unblocking operation; the machine replaces manpower, reducing the labor intensity of workers and the operation hazards;

[0025] Each nozzle (duckbill flat nozzle) of this new unclogging device is equipped with a control valve at its air inlet end. The unclogging time and the force of the spray can be adjusted according to the ease with which different materials accumulate and clog the chute. It has good adaptability to the characteristics of material accumulation, adhesion, and clogging of materials with different moisture content.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic unclogging device for a slag vertical mill feed chute, comprising a vertical mill casing (1), characterized in that: The vertical mill housing (1) is provided with a feeding chute (2), and a connecting pipe (4) is fixedly connected inside the vertical mill housing (1). The vertical mill housing (1) is provided with a mill inner chute tongue plate (7), and a connecting pipe (4) is provided on the mill inner chute tongue plate (7). An air storage tank (3) is provided on the connecting pipe (4), and a flow control valve (5) is provided on the connecting pipe (4). A nozzle (6) is provided on the connecting pipe (4), and a nozzle (6) is provided on the mill inner chute tongue plate (7). A sealing mechanism (8) is provided on the outside of the feeding chute (2).

2. The automatic unblocking device for the feed chute of a slag vertical mill according to claim 1, characterized in that: The sealing mechanism (8) includes a support sleeve (81). The support sleeve (81) is fixedly connected to the outside of the feeding chute (2). The support sleeve (81) is in contact with the connecting pipe (4). A screw (82) is rotatably connected inside the support sleeve (81). A threaded sleeve (85) is threadedly connected to the outside of the screw (82). A connecting sleeve (86) is fixedly connected to the threaded sleeve (85). The connecting sleeve (86) is in contact with the support sleeve (81). A guide groove (87) is opened inside the support sleeve (81). A guide block (88) is slidably connected inside the guide groove (87). The guide block (88) is fixedly connected to the connecting sleeve (86). A sealing sleeve (810) is fixedly connected to the connecting sleeve (86). The sealing sleeve (810) is in contact with the support sleeve (81) and the feeding chute (2).

3. An automatic unblocking device for a slag vertical mill feed chute according to claim 2, characterized in that: A handle (83) is fixedly connected to the screw (82), and the handle (83) is in contact with the support sleeve (81).

4. An automatic unblocking device for a slag vertical mill feed chute according to claim 2, characterized in that: The support sleeve (81) is fitted with a bearing (84), and the inner ring of the bearing (84) is fitted with a screw (82).

5. An automatic unblocking device for a slag vertical mill feed chute according to claim 2, characterized in that: There are two guide blocks (88), which are symmetrically distributed inside the support sleeve (81).

6. An automatic unblocking device for a slag vertical mill feed chute according to claim 2, characterized in that: The guide block (88) has a guide rod (89) slidably connected inside, and the two ends of the guide rod (89) are fixedly connected to the support sleeve (81).

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