阅读说明：本技术 一种球磨机大型轴向密封装置 (Large-scale axial sealing device of ball mill ) 是由 崔步林 于 2020-12-24 设计创作，主要内容包括：本发明公开一种球磨机轴向密封装置,所述密封装置包括壳体、磨块、限位块和推进弹簧,所述壳体的四周均匀间隔设置连接板,所述连接板与筒体通过螺栓固定连接,所述磨块均匀间隔设置于壳体内,磨块一端与进料空心轴的外壁接触,磨块另一端与推进弹簧一端固定连接,所述推进弹簧另一端与壳体固定连接,所述磨块左边和磨块右边分别设置限位块,一个磨块对应两个限位块,所述限位块固定于壳体内。本发明通过磨块与进料空心轴相配合的动态密封,解决了球磨机进料口的密封问题,具有简单好生产、密封效果良好、使用时间长,维护成本低廉的优势。(The invention discloses an axial sealing device of a ball mill, which comprises a shell, grinding blocks, limiting blocks and a propelling spring, wherein the periphery of the shell is uniformly provided with connecting plates at intervals, the connecting plates are fixedly connected with a barrel through bolts, the grinding blocks are uniformly arranged in the shell at intervals, one end of each grinding block is in contact with the outer wall of a feeding hollow shaft, the other end of each grinding block is fixedly connected with one end of the propelling spring, the other end of the propelling spring is fixedly connected with the shell, the left side of each grinding block and the right side of each grinding block are respectively provided with the limiting block, one grinding block corresponds to two limiting blocks, and the limiting blocks are. The dynamic sealing device solves the sealing problem of the feeding hole of the ball mill by the dynamic sealing of the grinding block and the feeding hollow shaft, and has the advantages of simple and good production, good sealing effect, long service time and low maintenance cost.)

1. The utility model provides a ball mill axial sealing device, the ball mill includes barrel and feeding hollow shaft (6), its characterized in that: sealing device includes casing (1), abrasive brick (2), stopper (3) and propulsion spring (4), the even interval all around of casing (1) sets up connecting plate (5), connecting plate (5) pass through bolt fixed connection with the barrel, abrasive brick (2) even interval sets up in casing (1), the outer wall contact of abrasive brick (2) one end and feeding hollow shaft (6), the abrasive brick (2) other end and propulsion spring (4) one end fixed connection, propulsion spring (4) other end and casing (1) fixed connection, the abrasive brick (2) the left side and abrasive brick (2) the right set up stopper (3) respectively, and one abrasive brick (2) correspond two stopper (3), stopper (3) are fixed in casing (1).

2. A ball mill axial seal arrangement as set forth in claim 1, wherein: the shell body (1) comprises a shell cover, a shell wall and a shell bottom (7), the shell cover and the shell bottom (7) are circular rings, a center hole is formed in the corresponding position of the shell cover and the shell bottom, the feeding hollow shaft (6) penetrates through the center hole to enter a feeding hole of the barrel body, the upper end of the shell wall is fixedly connected with the lower surface of the shell cover, the lower end of the shell wall is fixedly connected with the upper surface of the shell bottom (7), the other end of the propelling spring (4) is fixedly connected with the inner side of the shell wall, and the limiting block (3) is fixed.

3. A ball mill axial seal arrangement as set forth in claim 2, wherein: the height of the grinding block (2) is the same as the height of the shell wall.

4. A ball mill axial seal arrangement as set forth in claim 1, wherein: the number of the grinding blocks (2) is at least 6, and the number of the propelling springs (4) corresponds to the number of the limiting blocks (3) and the number of the grinding blocks (2).

5. A ball mill axial seal arrangement as set forth in claim 1, wherein: the number of the connecting plates (5) is at least 4.

Technical Field

The invention relates to the technical field of ball mills, in particular to a large axial sealing device of a ball mill.

Background

The ball mill is composed of horizontal cylinder, hollow feeding and discharging shaft and grinding head, the cylinder is long cylinder, the grinding body is installed in the cylinder, the cylinder is made of steel plate, and is fixed with the cylinder by steel lining plate, the grinding body is generally steel ball, and is loaded into the cylinder according to different diameters and a certain proportion, the grinding body can also be steel section. The material is selected according to the granularity of the grinding material, the material is loaded into the barrel body from the hollow shaft at the feeding end of the ball mill, when the ball mill barrel body rotates, the grinding body is attached to the lining plate of the barrel body and taken away by the barrel body under the action of inertia and centrifugal force and friction force, when the grinding body is taken to a certain height, the grinding body is thrown off under the action of the gravity of the grinding body, and the falling grinding body breaks the material in the barrel body like a projectile body. In the prior art, the sealing of a feed inlet of a ball mill is a problem which is difficult to solve. Because the working condition is poor, the abrasion speed of the seal is high, the abrasion compensation of the axial grinding block is difficult to a certain degree, the common seal compensation is only a few millimeters, the service life of the sealing element is not long, the sealing element is slightly abraded, dust, mud, sand powder and the like in the machine overflow, the pollution is caused, and the overhaul cost is high.

Disclosure of Invention

The invention provides a large axial sealing device of a ball mill, aiming at the problem of sealing a feed port, the device seals the feed port by matching a dynamic sealing block and a static feeding hollow shaft, and compared with the static sealing in the prior art, the use of the sealing block prolongs the time for replacing the sealing device.

The invention relates to an axial sealing device of a ball mill, which comprises a cylinder body and a feeding hollow shaft and is characterized in that: the sealing device comprises a shell, grinding blocks, limiting blocks and a propelling spring, wherein the connecting plates are arranged at the periphery of the shell at uniform intervals, the connecting plates are fixedly connected with the barrel through bolts, the grinding blocks are arranged in the shell at uniform intervals, one end of each grinding block is in contact with the outer wall of the feeding hollow shaft, the other end of each grinding block is fixedly connected with one end of the propelling spring, the other end of the propelling spring is fixedly connected with the shell, the limiting blocks are arranged on the left side of each grinding block and the right side of each grinding block respectively, one grinding block corresponds to two limiting blocks, and the limiting blocks.

The invention relates to an axial sealing device of a ball mill, which comprises a shell cover, a shell wall and a shell bottom, wherein the shell cover and the shell bottom are circular rings, center holes are formed in the positions, corresponding to the shell cover and the shell bottom, of the shell cover, a feeding hollow shaft penetrates through the center holes to enter a feeding hole of a barrel body, the upper end of the shell wall is fixedly connected with the lower surface of the shell cover, the lower end of the shell wall is fixedly connected with the upper surface of the shell bottom, the other end of a propelling spring is fixedly connected with the inner side of the shell wall.

According to the axial sealing device of the ball mill, the height of the grinding block is the same as that of the shell wall.

According to the axial sealing device of the ball mill, the number of the grinding blocks is at least 3, and the number of the propelling springs corresponds to the number of the limiting blocks.

According to the axial sealing device of the ball mill, the number of the connecting plates is at least 4.

Compared with the prior art, the axial sealing device of the ball mill has the advantages that: the ball mill feed inlet is dynamically sealed by the sealing device which is arranged on the cylinder body and rotates along with the cylinder body and the static feed central shaft, and compared with the static sealing in the prior art, the ball mill feed inlet is more tightly sealed, and the time for replacing the sealing device is prolonged. The device has the advantages of simple structure, good production, good sealing effect, long service life and low maintenance cost.

Drawings

FIG. 1 is a top view of a ball mill axial seal arrangement of the present invention.

Description of the figures

1 … casing 2 … grinding block 3 … limiting block 4 … propelling spring

5 … web 6 … feeds hollow axle 7 … at the bottom of the shell.

Detailed Description

A ball mill axial seal arrangement of the present invention is described in further detail below with reference to FIG. 1 of the drawings.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1, the axial sealing device of the ball mill of the present invention includes a cylinder and a hollow feeding shaft 6, and is characterized in that: sealing device includes casing 1, abrasive brick 2, stopper 3 and propulsion spring 4, casing 1 evenly spaced all around sets up connecting plate 5, connecting plate 5 passes through bolt fixed connection with the barrel, the even interval of abrasive brick 2 sets up in casing 1, the outer wall contact of 2 one ends of abrasive brick and feeding hollow shaft 6, the 2 other ends of abrasive brick and 4 one end fixed connection of propulsion spring, the 4 other ends of propulsion spring and 1 fixed connection of casing, the 2 left sides of abrasive brick and the 2 right sides of abrasive brick set up stopper 3 respectively, and one abrasive brick 2 corresponds two stoppers 3, stopper 3 is fixed in casing 1. The sealing device is fixedly connected with the ball mill cylinder body through connecting plates 5 which are arranged on the periphery of the shell 1 at even intervals, so that the sealing device rotates along with the rotation of the cylinder body. Further, the number of the connecting plates 5 is at least 4. According to the ball-milling device of different models, the number of connecting plate 5 is also along with the change, and the different rotational frequency of ball-milling model is just also different, and the barrel is just different with sealing device connection needs's power, and rotational frequency is big, and the joining force just needs to be bigger between barrel and the sealing device, and the connection of 4 connecting plates just is insecure like this, and then evenly increases the connecting plate to increase the connection compactness between barrel and the sealing device. In this embodiment, the number of the connection plates is 4. The grinding blocks 2 are arranged in the shell 1 at even intervals, one end of each grinding block 2 is in contact with the outer wall of the feeding hollow shaft 6, and the feed port of the ball mill is sealed through the structure. The grinding blocks 2 are uniformly arranged in the shell 1, the grinding blocks 2 rotate together with the shell 1 and the barrel, the feeding hollow shaft 6 is in a static state and is not moved, and the rotating grinding blocks 2 are matched with the static feeding hollow shaft 6 to complete dynamic sealing of the feeding port end of the ball mill. Dynamic seal is great to the consumption ratio of sealed piece 2, in order to in time to replenish abrasive brick 2 to make the abrasive brick 2 other end and propulsion spring 4 one end fixed connection, the propulsion spring 4 other end and casing 1 fixed connection, along with the abrasive brick 2 wearing and tearing consume, the relation of being connected of the abrasive brick 2 other end and propulsion spring 4 one end for recommendation spring 4 receives the pulling force of abrasive brick 2, and this pulling force receives the reaction force of recommendation spring, thereby promotes the inseparable contact of wearing and tearing remaining abrasive brick 2 and feeding hollow shaft 6 outer wall and seals. The other end of the grinding block 2 is fixedly connected with one end of a propelling spring 4, the other end of the propelling spring 4 is fixedly connected with the shell 1, and the structure plays a role of the propelling spring 4 to push the sealing block 2 to be tightly contacted and sealed with the outer wall of the feeding hollow shaft 6 before the ball mill starts to be started. The grinding block 2 the left side and the grinding block 2 the right set up stopper 3 respectively, and a grinding block 2 corresponds two stopper 3, stopper 3 is fixed in casing 1, thereby this structure has injectd grinding block 2 and can only remove sealed feed inlet in the direction of recommending the spring driving force, and can not remove about the direction again, and makes and produces the gap between grinding block 2 and the 6 outer walls of feeding hollow shaft, loses sealing function. The stopper 3 can play the effect that restriction abrasive brick 2 removed, and first is the stopper 2 is fixed in the casing, and second set up stopper 3 respectively on the abrasive brick 2 the left side and abrasive brick 2 the right, and an abrasive brick 2 corresponds two stoppers 3 and carries on spacingly.

Referring to fig. 1, the housing 1 includes a housing cover, a housing wall and a housing bottom 7, the housing cover and the housing bottom 7 are circular rings, a central hole is formed at a position corresponding to the housing cover and the housing bottom, the hollow feeding shaft 6 passes through the central hole and enters a feeding port of the barrel, the upper end of the housing wall is fixedly connected with the lower surface of the housing cover, the lower end of the housing wall is fixedly connected with the upper surface of the housing bottom 7, the other end of the propelling spring 4 is fixedly connected with the inner side of the housing wall, and the limiting block 3 is fixed on the housing bottom. The shell 1 comprises a shell cover, a shell wall and a shell bottom 7, the shell cover and the shell bottom 7 are circular rings, center holes are formed in the positions, corresponding to the shell cover and the shell bottom, of the shell cover, the feeding hollow shaft 6 penetrates through the center holes to enter a feeding hole of the barrel, and the shell 1 is fixed to the feeding hole end of the barrel like a cylinder with a hollow middle through bolts. When the ball mill is started, the housing rotates along with the rolling of the cylinder. The limiting block 3 is fixed on the shell bottom in a welding mode, and stability of the limiting block 3 is guaranteed. And further defines that the other end of the spring 4 is fixedly connected with the inner part of the shell wall.

Referring to fig. 1, the height of the grinding block 2 is the same as the height of the shell wall. The height of the limiting grinding block 2 is the same as that of the shell wall, one purpose is that the grinding block can be clamped in the shell 1, the upper part and the lower part of the grinding block are limited by the shell cover and the shell bottom 7, the left position and the right position of the limiting block 3 are limited, and the grinding block 2 can only move in the thrust direction of the propelling spring 4. The second purpose is to make the sealing between the grinding block 2 and the hollow feeding shaft 6 more tight.

Referring to fig. 1, the number of the grinding blocks 2 is at least 6, and the number of the propelling springs 4 and the number of the limiting blocks 3 correspond to the number of the grinding blocks 2. As shown in figure 1, the grinding blocks 2 are uniformly arranged in the shell 1 at intervals, for the sealing effect, the number of the grinding blocks 2 is at least 6, and the grinding blocks are uniformly arranged in the shell, and experiments prove that the sealing effect of one grinding block 2 is not good or leakage exists. At least 6 abrasive bricks are evenly matched with the outer surface of the feeding hollow shaft 6 for sealing, so that the sealing effect can be ensured. According to different model ball mills, the number of the grinding blocks 2 also needs to be increased, different ball mill models, different rotation frequencies of the cylinder body and different quantities of the grinding blocks 2 needed by sealing the feeding hole. The higher the barrel rotation frequency, the greater the number of blocks 2 required to be sealed. One grinding block 2 corresponds to 2 limiting blocks, so the number of the limiting blocks 3 is at least 12, the number of the pushing springs 4 corresponds to that of the grinding blocks 2 one by one, and the number of the pushing springs 4 is 6.

The above description is only for the purpose of illustrating specific embodiments of the present invention, and should not be construed as limiting the scope of the present invention, and all equivalent changes, modifications, or equivalent scaled-up or down made according to the design spirit of the present invention should be considered as falling within the scope of the present invention.