Bolt for ball mill barrel lining plate and mounting structure of bolt

Abstract

The utility model belongs to the technical field of ball mills, and particularly relates to a bolt for a ball mill barrel lining plate and an installation structure of the bolt, which comprises a screw with a countersunk head, a long-strip-shaped blind hole arranged along the central axis in the screw, a plastic pipe arranged in the long-strip-shaped blind hole and red ink arranged in the plastic pipe, one end of the plastic pipe is inserted into the long-strip-shaped blind hole, the other end of the plastic pipe is exposed out of the long-strip-shaped blind hole, and a cotton head is arranged at the end, exposed out of the long-strip-shaped blind hole, of the plastic pipe. When the lining plate in the barrel body is worn to the bolt, the countersunk head is worn to the neck part, the blind hole in the screw rod is ground into a through hole, the pressure balance in the tube is damaged, red ink in the tube flows onto the cotton head, and the cotton head is dyed red, so that a worker can observe whether the lining plate in the barrel needs to be replaced in time or not from the outside of the barrel body, and does not need to enter a ball mill for inspection; therefore, which lining plate reaches the wear limit can be judged, the shutdown inspection frequency is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of ball mill, especially a bolt for ball mill barrel lining plate and its mounting structure. BACKGROUND

[0002] Ball mill lining plate is an important component of ball mill, which is installed in the feed end, discharge end and the inside of barrel of ball mill. Ball mill lining plate has two main functions in ball mill: one is to protect the barrel of ball mill from being worn by materials and grinding balls during work; the other is to lift materials and grinding balls, which helps to improve the working efficiency of ball mill. During work, materials and grinding balls will repeatedly impact and rub against the lining plate, causing the surface material of the lining plate to be continuously stripped, and finally leading to the failure of the lining plate due to wear. Therefore, the lining plate is also a large consumption accessory in ball mill. For the ball mill itself, the lining plate is one of the main components with high maintenance rate. The main reason affecting the working efficiency of the ball mill is the detection, replacement and repair of the wear of the lining plate.

[0003] The lining plate inside the barrel is not easy to check after wear. After the ball mill stops, workers need to enter the inside of the ball mill from the manhole of the barrel of the ball mill to check the wear state of the lining plate. When the lining plate is worn to the installation bolt, the lining plate needs to be replaced in time to avoid the lining plate from falling off the inner wall of the barrel and further wearing the barrel. This manual detection method is inconvenient, has large error and low efficiency. Moreover, due to the accelerated wear rate of the lining plate in the later use stage, the thickness of the lining plate changes sharply.

[0004] Therefore, it is necessary to provide a bolt for ball mill barrel lining plate and its mounting structure. Through the state of the bolt extending outside the barrel, it can be judged which lining plate reaches the wear limit and needs to be replaced in time. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a bolt for ball mill barrel lining plate and its mounting structure. By checking the state of the bolt extending outside the barrel, it can be judged whether the lining plate needs to be replaced in time, so as to reduce the wear rate of the barrel and reduce the frequency of manual maintenance.

[0006] The utility model aims to realize the following technical scheme.

[0007] According to one aspect of the utility model, a kind of bolt for ball mill barrel lining plate is disclosed, including: screw rod with countersunk head, the surface of the screw rod close to the countersunk head is equipped with light pole section, the surface of the screw rod away from countersunk head is equipped with thread section, long strip blind hole is arranged along the central axis of the screw rod interior, plastic tube is arranged in the long strip blind hole, the both ends of the plastic tube are sealed with silicon oil, red ink is arranged in the plastic tube, one end of the plastic tube is inserted into the long strip blind hole, the other end is exposed outside the long strip blind hole, and the end of the plastic tube exposed outside the long strip blind hole is equipped with cotton head.

[0008] Preferably, the cotton head is white.

[0009] Preferably, the neck of the countersunk head has an inclination of 120°.

[0010] Preferably, the depth of the long strip blind hole is at the neck of the countersunk head.

[0011] Preferably, the long strip blind hole is interference fit with the plastic tube.

[0012] Preferably, the screw rod has a diameter of M30, and the bolt has a strength of grade 8.8.

[0013] According to another aspect of the utility model, a bolt mounting structure for ball mill barrel lining plate is disclosed, the lining plate is arranged on the inner wall of the barrel, comprising: the bolt, the screw rod of the bolt passes through the lining plate and the barrel in sequence, the countersunk head of the bolt is connected with the bolt hole of the lining plate, to fix the lining plate on the inner wall of the barrel;A rubber ring, a buckle bowl and a nut are sequentially sleeved on the screw rod outside the barrel, the buckle bowl has a through hole in the middle, the rubber ring is sleeved on the light pole section of the screw rod, one end of the rubber ring is attached to the outside of the barrel, and the other end is attached to the buckle bowl.

[0014] Preferably, a gasket is arranged between the buckle bowl and the nut, and the inner diameter of the nut is M30.

[0015] The bolt for ball mill barrel lining plate of the utility model has the following beneficial effects: the middle of the bolt is provided with a plastic tube, the both ends of the plastic tube are sealed with silicon oil, red ink is filled in the plastic tube, the end of the screw rod exposed outside the barrel is provided with a cotton head, when the lining plate in the barrel is worn to the bolt, the countersunk head is worn to the neck, the long strip blind hole in the bolt is worn into a through hole, the pressure balance in the plastic tube is destroyed, the red ink in the tube flows to the cotton head, the cotton head is dyed red, workers can observe whether the lining plate in the barrel needs to be replaced in time from the outside of the barrel, without entering the inside of the ball mill for inspection, which can determine which lining plate reaches the wear limit, reduce the number of shutdown inspections, and improve production efficiency.

[0016] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and other objects, features and advantages of the present application will become more apparent from specific embodiments of the present application that will be described in the following detailed description with reference to the accompanying drawings. In describing the embodiments of the present application, identical components are labeled with the same reference numerals throughout the several views and the detailed description set forth below.

[0018] Figure 1 Bolt structure schematic view of one embodiment of the present application.

[0019] Figure 2 Bolt installation schematic view of one embodiment of the present application.

[0020] Figure 3 Structure schematic view of the cylinder liner of the present application.

[0021] Figure 4 A-A sectional view of Figure 3

[0022] Reference signs: 1, countersunk head; 2, screw rod; 3, polished rod section; 4, threaded section; 5, plastic tube; 6, cotton head; 7, silicone oil; 8, countersunk head neck; 9, liner; 10, cylinder; 11, bolt; 12, rubber ring; 13, buckle bowl; 14, bolt mounting hole, 15, gasket; 16, nut; 17, lifting rib. DETAILED DESCRIPTION

[0023] Preferred embodiments of the present application will be described herein below with reference to the accompanying drawings. Although preferred embodiments of the present application are shown in the drawings, it is understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so as to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art. EMBODIMENT

[0024] As Figure 1 ​As shown, the bolt for the liner plate of the ball mill cylinder in the embodiment comprises a screw rod 2 with a countersunk head 1, a light rod section 3 arranged on the surface of the screw rod 2 close to the countersunk head 1, a threaded section 4 arranged on the surface of the screw rod 2 away from the countersunk head 1, a long strip-shaped blind hole arranged along the central axis of the screw rod 2, a plastic tube 5 arranged in the long strip-shaped blind hole, the both ends of the plastic tube 5 being sealed by silicon oil 7, red ink being filled in the plastic tube 5, one end of the plastic tube 5 being inserted into the long strip-shaped blind hole and the other end being exposed outside the long strip-shaped blind hole, a cotton head 6 being arranged on the end of the plastic tube 5 exposed outside the long strip-shaped blind hole, specifically, the both ends of the plastic tube 5 are sealed by the silicon oil 7, the red ink is filled in the plastic tube 5, the end of the screw rod 1 exposed outside the cylinder is provided with the cotton head 6, the cotton head 6 is white, when the countersunk head 1 is worn to the plastic tube 5, the blind hole in the bolt is worn into a through hole, the pressure balance in the plastic tube 5 is destroyed, the red ink in the plastic tube 5 flows to the cotton head 6, the cotton head is dyed red, which is convenient for workers to find and replace the liner plate in time.

[0025] In the embodiment, the depth of the long strip-shaped blind hole is located at the neck part 8 of the countersunk head, when the surface of the countersunk head 1 is worn to the neck part 8 of the countersunk head, the limit position of the replacement of the liner plate is reached. The countersunk head 1 is elliptical, the width of the countersunk head 1 is 30 mm, the length of the countersunk head 1 is 62 mm, the length of the bolt is 175 mm, the length of the screw rod 2 is 130 mm, the length of the threaded section 4 is 90 mm, the diameter of the screw rod is M30, and the strength of the bolt is 8.8.

[0026] In the embodiment, the long strip-shaped blind hole is in interference fit with the plastic tube 5, so that the plastic tube 5 is fixed in the long strip-shaped blind hole and cannot move due to the rotation of the cylinder.

[0027] In the embodiment, the cotton head 6 is white, when the countersunk head 1 is worn to the plastic tube 5, the red ink in the plastic tube 5 flows to the cotton head 6, the cotton head 6 is dyed red, which is convenient for workers to find and replace the liner plate in time.

[0028] In the embodiment, the inclination angle of the neck part 8 of the countersunk head 1 is 120°, so that the neck part 8 of the countersunk head is attached to the bolt of the liner plate, and the sealing performance of the liner plate after being installed on the cylinder is improved. Embodiment

[0029] As Figures 2-4As shown, the bolt mounting structure for the liner plate of the ball mill cylinder is provided, the liner plate 9 is arranged on the inner wall of the cylinder 10, the middle part of the liner plate 9 is symmetrically provided with two bolt mounting holes 14, and the bolt mounting structure comprises a bolt 11, the screw rod of the bolt 11 sequentially penetrates the liner plate 9 and the cylinder 10, the countersunk head 1 of the bolt 11 is connected with the bolt mounting hole 14 of the liner plate 9, the liner plate 9 is fixed on the inner wall of the cylinder 10, the screw rod 2 outside the cylinder 10 is sequentially sleeved with a rubber ring 12, a buckle bowl 13 and a nut 16, the middle part of the buckle bowl 13 is provided with a through hole, the buckle bowl 13 is in the shape of a bowl and is made of stainless steel, the rubber ring 12 is sleeved on the polished rod section of the screw rod 2, one end of the rubber ring 12 is attached to the outside of the cylinder 10, the other end is attached to the buckle bowl 13, the bowl opening of the buckle bowl 13 faces the rubber ring 12 and is used for extruding the rubber ring 12 and improving the sealing performance of the liner plate. The shape of the bolt mounting hole 14 is matched with the shape of the countersunk head 1 of the bolt 11, when the surface of the countersunk head 1 is abraded to the neck part 8 of the countersunk head, the limit position of the liner plate 9 needs to be replaced, the two sides of the bolt mounting hole 14 of the liner plate 9 are symmetrically provided with lifting ribs 17 and are used for lifting materials.

[0030] In the embodiment, the gasket 15 is arranged between the buckle bowl 13 and the nut 16, the sealing performance of the cylinder 10 and the bolt 11 is improved, the inner diameter of the nut 16 is M30, and the nut 16 is matched with the bolt 11.

[0031] When the liner plate 9 in the cylinder is abraded to the countersunk head 1 of the bolt 11, the countersunk head is abraded to the neck part, the blind hole in the bolt 11 is abraded into a through hole, the pressure balance in the plastic tube 5 is destroyed, the red ink in the tube flows to the cotton head 6, the cotton head 6 is dyed red, the worker can observe whether the liner plate in the cylinder needs to be replaced in time from the outside of the cylinder 10, the worker can judge which liner plate reaches the abrading limit without entering the inside of the ball mill for inspection, the number of inspection times during shutdown is reduced, and the production efficiency is improved.

[0032] The above has described the embodiments of the utility model, the above description is exemplary, is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A bolt for a ball mill cylinder liner, characterized in that: include: A screw with a countersunk head, a smooth rod section is provided on the surface of the screw close to the countersunk head, a threaded section is provided on the surface of the screw away from the countersunk head, a long blind hole is provided along the inner central axis of the screw, a plastic tube is provided in the long blind hole, both ends of the plastic tube are sealed with silicone oil, red ink is filled in the plastic tube, one end of the plastic tube is inserted into the long blind hole, and the other end is exposed outside the long blind hole, and a cotton head is provided at the end of the plastic tube exposed outside the long blind hole.

2. The bolt for ball mill cylinder liner according to claim 1, characterized in that: The cotton head is white.

3. The bolt for ball mill cylinder liner according to claim 1, characterized in that: The inclination angle of the countersunk neck of the countersunk head is 120°.

4. The bolt for ball mill cylinder liner according to claim 3, characterized in that: The depth of the long strip blind hole is located at the countersunk neck.

5. The bolt for ball mill cylinder liner according to claim 1, characterized in that: The long strip blind hole is interference fit with the plastic tube.

6. The bolt for ball mill cylinder liner according to claim 1, characterized in that: The screw diameter is M30, and the bolt strength is grade 8.

8.

7. A bolt mounting structure for a ball mill cylinder liner, comprising: According to the bolt as described in claims 1-6, the screw rod of the bolt passes through the lining plate and the barrel in sequence, the countersunk head of the bolt is connected to the bolt hole of the lining plate, and the lining plate is fixed to the inner wall of the barrel; the screw rod outside the barrel is sequentially covered with a rubber ring, a buckle bowl and a nut, a through hole is provided in the middle of the buckle bowl, and the rubber ring is covered on the bare rod section of the screw rod, one end of the rubber ring is in contact with the outside of the barrel, and the other end is in contact with the buckle bowl.

8. The bolt mounting structure for a ball mill cylinder liner according to claim 7, characterized in that: A gasket is provided between the buckle bowl and the nut, and the inner diameter of the nut is M30.

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