Mill feeding end lining structure

Abstract

The utility model belongs to the technical field of mill feeding, and particularly discloses a mill feeding end lining structure which comprises a lining and a feeding pipe, an extension lining is arranged at one end of the lining, the feeding pipe is rotatably connected with the extension lining, a first flow guide plate is arranged at one end of the extension lining, a connecting flange is arranged at the other end of the extension lining, and a rubber sealing gasket is arranged on the first flow guide plate. The first flow guide plate is further provided with a pressing plate used for pressing the rubber sealing gasket. And a second guide plate is also arranged on the feeding pipe. The feeding end of an existing mill has the problems that ore pulp leaks and flows into a hollow shaft to damage a bearing bush or a sealing structure is complex and difficult to install. According to the utility model, percolate cannot flow to the hollow shaft through the extension bushing, the first flow guide plate and the second flow guide plate, so that the effect of protecting the bearing bush is achieved, the structure is simple, and the installation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to mill feeding technical field, concretely relates to a mill feeding end bush structure. BACKGROUND

[0002] The ball mill is a kind of widely used in industry crushing equipment, comprising feed section, discharge section, rotating section, transmission section (speed reducer, small transmission gear, motor, electric control) and other main parts. The ball mill is usually fed by feeding pipe, one end of the feeding pipe is connected with the feeding device, and the other end is connected with the feeding cylinder of the ball mill to convey the raw materials in the feeding device into the ball mill. The existing feeding device has the problems of overflow of the mill cylinder and penetration of the hollow shaft, which damages the bearing bush, and the mill slurry in the hollow shaft enters the oil station through the oil return pipeline, which pollutes the oil product.

[0003] The ball mill feeding assembly disclosed in Chinese patent document CN219745016U is inserted into the feeding sleeve, and the feeding sleeve and the feeding sleeve are sealed and matched, the feeding sleeve is rotatably assembled in the feeding sleeve, the feeding sleeve has a feeding inner hole extending forward and backward, and the feeding inner hole is used for feeding raw materials into the feeding sleeve. The cylinder wall of the discharge cylinder is provided with a liquid injection channel extending along the axis of the discharge cylinder, the outer periphery of the discharge cylinder is provided with an annular groove and a liquid outlet of the liquid injection channel, the annular groove is provided with a sealing ring, and the sealing ring is used to seal the gap between the feeding sleeve and the discharge cylinder. The main problem solved by the ball mill feeding sealing device is that the sealing device is easy to fail when the feeding sleeve rotates

[0004] But the feeding cylinder and the feeding sleeve are rotatably connected, and the mill slurry is inevitably overflowed with rotation, and the multi-layer sealing structure increases the cost and is complex to install. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a mill feeding end bush structure to solve the problems of overflow of the mill slurry and damage to the bearing bush, and complex sealing structure.

[0006] To achieve the above-mentioned purpose, the basic scheme provided by the utility model comprises a bush and a feeding pipe, one end of the bush is provided with an extension bush, the feeding pipe is rotatably connected with the extension bush, one end of the extension bush is provided with a first flow guide plate, the other end of the extension bush is provided with a connecting flange, the first flow guide plate is embedded with a rubber sealing gasket, and the first flow guide plate is provided with a pressing plate for pressing the rubber sealing gasket.

[0007] The principle and beneficial effects of the utility model are that the rubber sealing gasket and the pressing plate play a certain sealing role, can reduce the overflow of the mill slurry, reduce the overflow of the mill slurry caused by the operation of the mill through the extension bush, and finally the overflowed mill slurry will drip along the first flow guide plate. The mill slurry cannot enter the hollow shaft, thereby reducing the failure rate of the bearing bush, and the structure is simple, without complex sealing structure, and is easy to install.

[0008] Option 2, which is the preferred basic option, has a feed screw inside the bushing. When the mill is running, the bushing rotates with the mill barrel, and the feed screw rotates, pushing the material into the barrel and reducing blockage in the feed port.

[0009] Option 3, the preferred basic option, features a grouting port on the connecting flange. When the internal grinding media (such as steel balls) gradually decreases due to wear, the grouting port can be used to regularly replenish new grinding media to ensure mill efficiency. It can also be used for pressure relief or discharge in emergencies, and can also be used to add cleaning fluid to help clean the mill wall before shutting down.

[0010] Option 4, which is the preferred option of the basic option, has a second guide plate fixedly connected to the feed pipe. The second guide plate does not rotate with the bushing and can completely block the seeping slurry from flowing into the hollow shaft, avoiding the problem of bearing damage.

[0011] Option 5, which is the preferred option of the basic option, uses a conical ring as the second guide plate. The conical structure facilitates slurry dripping. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of a bushing structure at the feed end of a mill according to the utility model; DETAILED DESCRIPTION

[0013] The present invention is further described in detail below through specific implementation methods:

[0014] The reference numerals in the drawings of the specification include: 1-bushing, 2-feed pipe, 3-extension bushing, 4-first guide plate, 5-flange connecting plate, 6-rubber sealing gasket, 7-pressure plate, 8-feed screw, 9-grouting port, 10-second guide plate.

[0015] Example

[0016] like Figure 1 Figure 1 shows a bushing structure for the feed end of a mill, comprising a bushing 1 and a feed pipe 2. An extension bushing 3 is provided at one end of the bushing 1, with the feed pipe 2 being rotatably connected to the extension bushing 3. A first guide plate 4 is provided at one end of the extension bushing 3, and a connecting flange 5 is provided at the other end. A rubber seal 6 is embedded in the first guide plate 3, which is also provided with a pressure plate 7 for compressing the rubber seal 6. A feed screw 8 is provided within the bushing 1, and a grouting port 9 is provided on the connecting flange 5. A conical second guide plate is fixedly connected to the feed pipe.

[0017] The embodiment of the present application is that the material flows from the feeding pipe 2 to the bushing 1, the bushing 1 rotates with the mill barrel, the feeding screw 8 rotates with the bushing 1 and pushes the material into the barrel, and the material cannot be accumulated at the feeding end through the feeding screw 8. The extended bushing 3 is 500 mm long at the joint of the bushing 1 and the feeding pipe 2, when the mill is running, the ore pulp in the barrel moves violently, and the extended bushing 3 prevents the violent ore pulp from flowing to the feeding end cover. The first guide plate 4 is longer than the original connecting plate, when the rubber sealing gasket 6 fails to seal, the pulp will seep out from the extended bushing 3 and the feeding pipe 2 along the rotation, the seeped ore pulp will drip along the first guide plate, if there is still liquid flowing along the pipe wall, it will flow to the second guide plate 10, since the second guide plate 10 will not rotate relative to the pipe wall, there is no sealing problem, and a conical contact surface is formed with the liquid, which facilitates the liquid to drip along the second guide plate 10, and the problem of damaging the bearing bush due to the liquid seepage of the feeding port is completely solved. The connecting flange 5 is provided with a grouting port 9. When the internal grinding medium (such as steel ball) is gradually reduced due to wear, new grinding medium can be regularly supplemented through the grouting port 9, so as to ensure the working efficiency of the mill, in an emergency, it can be used for pressure relief or discharge, and before shutdown, it can also be used to add cleaning liquid to help clean the inner wall of the mill.

[0018] The above is only an embodiment of the present application, and the specific structure and characteristics of the scheme are not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A mill feed end liner structure, characterised in that, The utility model relates to a feeding device for a coal powder feeding system, which comprises a bushing (1) and a feeding pipe (2), the bushing (1) is provided with an extension bushing (3) at one end, the feeding pipe (2) is rotatably connected with the extension bushing (3), the extension bushing (3) is provided with a first guide vane (4) at one end, the extension bushing (3) is provided with a connecting flange (5) at the other end, the first guide vane (4) is provided with a rubber sealing gasket (6), and the first guide vane (4) is further provided with a pressing plate (7) for pressing the rubber sealing gasket (6).

2. A mill feed end liner structure according to claim 1, characterised in that, The bushing (1) is provided with a feeding screw (8) inside.

3. A mill feed end liner structure according to claim 1, characterised in that, The connecting flange (5) is provided with a grouting opening (9).

4. A mill feed end liner structure according to claim 1, characterised in that, The feeding pipe (2) is fixedly connected with a second guide vane (10).

5. A mill feed end liner structure according to claim 4, characterised in that The second guide vane (10) is a conical ring.

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