CN213700130U

CN213700130U - Ball mill

Info

Publication number: CN213700130U
Application number: CN202021494077.6U
Authority: CN
Inventors: 蒋兰珍
Original assignee: Shaoxing Keqiao No3 Cement Co Ltd
Current assignee: Shaoxing Keqiao No3 Cement Co Ltd
Priority date: 2020-07-25
Filing date: 2020-07-25
Publication date: 2021-07-16
Anticipated expiration: 2030-07-25

Abstract

The application relates to a ball mill, and relates to the technical field of milling machines. The existing ball mill generally comprises a cooling device for cooling a cylinder, wherein the cooling device generally comprises a spray head, a water pipe and a water tank, but the spray head is easily blocked in the working process of the cooling device, and the cooling effect is poor. This application is including rotating the barrel that sets up, be used for driving barrel pivoted power device and cooling device, and cooling device is including setting up in shower nozzle, water pipe, the water pump of connection on the water pipe of barrel one side and being located the basin under the barrel to the first half of shower nozzle orientation barrel axis top is favorable to reducing the condition emergence that external impurity, cinder caused the shower nozzle to block up, improves the cooling effect to the barrel.

Description

Ball mill

Technical Field

The application relates to the technical field of grinding mills, in particular to a ball mill.

Background

The ball mill is a key device for crushing after the materials are crushed, can be used for carrying out dry or wet grinding on various ores and other grindable materials, and is widely applied to the production industries of cement, silicate products, refractory materials, fertilizers, glass ceramics and the like. In a common cement ball mill, during operation, particularly during stoppage of the mill, a large temperature difference is generated on a cylinder body, and then remarkable thermal stress and thermal deformation are generated, which may cause geometric deformation of a lining plate of the mill body or damage to other parts, so that the temperature of the mill needs to be reduced and cooled.

The utility model discloses a ball mill is disclosed in the utility model patent of grant bulletin No. CN210846585U, the novel nipple rectifier comprises a cylindrical shel, be located the barrel below and be curved basin and install in ground and connect in the cask of basin lower extreme, install the immersible pump in the cask, the immersible pump is connected with the outlet pipe that runs through to the basin top, fixed mounting has the water pipe that is on a parallel with barrel axis direction and sets up in the basin, outlet pipe and water pipe intercommunication set up, be connected with the spray pipe that a plurality of roots were arranged along water pipe length direction equidistance on the water pipe, the spray pipe wholly is the arc and is on a parallel with the outer peripheral face setting.

The above related technical solutions have the following drawbacks: the submersible pump guides water in the water bucket to the water spraying pipe, and then the water is sprayed to the barrel of the ball mill through the spray head so as to cool the ball mill body. However, since the ball mill is used for finely grinding the material, a large amount of dust usually exists in the working environment of the ball mill, and the spray head easily carries and flows back the dust on the cylinder and in the air to the water tank in the upward water spraying process, so that the spray head is easily blocked, and the cooling water is sprayed from the spray head to the outer wall of the cylinder, only a small part of the cooling water can be attached to the cylinder, and the cooling effect is limited.

SUMMERY OF THE UTILITY MODEL

In order to improve the cooling effect of barrel, reduce the condition that the shower nozzle is blockked up by the dust and take place, this application provides a ball mill.

The above object of the present application is achieved by the following technical solutions:

the utility model provides a ball mill, includes the barrel that rotates the setting, sets up in the power device and the cooling device of barrel one end, and cooling device is including setting up in the water pipe of barrel one side and connecting in the shower nozzle of water pipe, and the nodical top that is located barrel axis of rotation of the spraying direction of shower nozzle and barrel.

By adopting the technical scheme, the spray head is arranged on one side of the barrel body instead of the lower side, and sprayed cooling water is difficult to flow back to the spray head after carrying dust in air or on the barrel body, so that the condition that the spray head is blocked by the dust is effectively reduced, and the effective operation of the cooling device is ensured; and reduce the condition that the cooling water breaks away from the barrel because of self gravity behind the short time contact barrel outer wall, the shower nozzle setting is then the cooling water can flow along the barrel downwards in the side to increase the heat transfer time of cooling water and barrel, be favorable to improving the cooling effect to the cooling of barrel.

The present application may be further configured in a preferred example to: the cooling device further comprises a water tank and a water pump, wherein the water tank is arranged at one end, far away from the spray head, of the water pipe, the water pump is connected to the water pipe, the water pipe is connected to the water tank, and the water tank is located below the barrel.

Through adopting above-mentioned technical scheme, the cooling water of water pump in with the basin is leading-in to the water pipe in, and the cooling water sprays to the barrel outer wall through water pipe and shower nozzle again, flows back to the basin again to the cooling water after the barrel cooling heat transfer to the realization is to the cyclic utilization of cooling water, reduces the waste of water resource.

The present application may be further configured in a preferred example to: a first filter screen is arranged at the upper end of the water tank.

Through adopting above-mentioned technical scheme, first filter screen filters the cooling water that flows back to in the basin, reduces impurity, the sediment bits that carry in the cooling water, and the condition that reduces impurity, sediment bits and block up the shower nozzle takes place, guarantees cooling device's effective operation.

The present application may be further configured in a preferred example to: the joint of the water pipe and the water tank is higher than the bottom of the water tank.

Through adopting above-mentioned technical scheme, during external impurity got into the basin, tiny impurity passed first filter screen rear portion and floats in the cooling water, and partial deposit is in the bottom of basin, and the junction of water pipe and basin is located the intermediate position of first filter screen and basin bottom, can reduce the water pump and draw water the impurity come-up that makes the bottom and the probability of admission pipe, and the condition that reduces the shower nozzle and is blockked up by impurity takes place.

The present application may be further configured in a preferred example to: and a second filter screen is arranged at the joint of the water tank and the water pipe.

Through adopting above-mentioned technical scheme, be favorable to hindering the impurity that floats in the cooling water to get into the water pipe, reduce the adverse effect of impurity to equipment, guarantee cooling device's normal operating.

The present application may be further configured in a preferred example to: and a bearing net is arranged at the upper end of the water tank.

Through adopting above-mentioned technical scheme, the bearing net has stronger bearing capacity, can play the supporting role to workshop personnel or small-size equipment to be favorable to workshop personnel to overhaul, maintain or other work to the barrel in the below of barrel.

The present application may be further configured in a preferred example to: and one end of the water pipe close to the spray head is provided with a flow rate valve.

Through adopting above-mentioned technical scheme, can be at a suitable value with the velocity of flow control of cooling water, improve the cooling effect to the barrel. When the cooling water flows at a too high speed, the cooling water is easy to sputter outwards when contacting the cylinder, only a small part of the cooling water can be attached to the cylinder, and the cooling effect is poor; the cooling water has too low flow rate, and the cooling water cannot be sprayed onto the cylinder body; the speed of cooling water is moderate, and when the cooling water contacts the outer wall of the barrel, the cooling water which is sputtered outwards is less, and most of the cooling water can smoothly contact the barrel, so that the retention time on the barrel is longer, the heat exchange time of the cooling water and the barrel is prolonged, and the cooling effect of the barrel is improved.

The present application may be further configured in a preferred example to: a plurality of spraying holes are formed in the spraying head and are arranged in the direction parallel to the rotation axis of the barrel body.

Through adopting above-mentioned technical scheme, improved the area that sprays of single shower nozzle to accomplish the work of cooling to whole barrel outer peripheral face under the condition that sets up less quantity shower nozzle, reduce cost.

The present application may be further configured in a preferred example to: an overhaul ladder is arranged at the spray head.

Through adopting above-mentioned technical scheme, because large-scale ball mill's barrel mounting height is higher, set up the installation of workshop personnel to shower nozzle and water pipe, overhaul or observe the work of being convenient for.

In summary, the present application includes at least one of the following beneficial technical effects:

1. in the scheme, the spray head is arranged on one side of the barrel body instead of the lower side, and sprayed cooling water is difficult to flow back to the spray head after carrying dust in air or on the barrel body, so that the condition that the spray head is blocked by the dust is effectively reduced, and the effective operation of the cooling device is ensured; the situation that the cooling water is separated from the cylinder body due to self gravity after the cooling water is in short contact with the outer wall of the cylinder body is reduced, and the cooling water can flow downwards along the cylinder body when the spray head is arranged on the side surface, so that the heat exchange time of the cooling water and the cylinder body is prolonged, and the cooling effect of the cylinder body is favorably improved;

2. in the scheme, the spraying holes are formed, so that the spraying area of a single spray head is increased, the cooling work on the peripheral surface of the whole barrel is completed under the condition that a small number of spray heads are arranged, and the cost is reduced;

3. in this scheme, through setting up the velocity of flow valve for the velocity of flow of cooling water is moderate, outwards sputters the condition when reducing the cooling water contact barrel outer wall, improves the cooling effect to the barrel.

Drawings

FIG. 1 is a schematic structural diagram of a first embodiment of the present application;

fig. 2 is a partial exploded view of the cooling device of fig. 1, showing a first filter, a second filter and a water supply port;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

fig. 4 is a schematic view of the structure of fig. 1 from another perspective.

In the figure, 1, a cylinder; 11. an inner liner plate; 12. a ball milling body; 2. a power plant; 21. a drive motor; 22. a speed reducer; 23. a first gear; 24. a second gear; 3. a cooling device; 31. a water pipe; 311. a flow rate valve; 32. a spray head; 321. a spray orifice; 33. a water tank; 331. a load-bearing web; 3311. a vertical plate; 332. a first filter screen; 333. a water supply port; 334. a second filter screen; 335. a water outlet; 336. a drain valve; 34. a water pump; 4. a hollow shaft; 41. a feeding port; 42. a discharge port; 43. a support; 5. a support frame; 6. an overhaul ladder.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The first embodiment is as follows: referring to fig. 1, a ball mill disclosed in the present application includes a rotatably disposed barrel 1, a power device 2 and a cooling device 3 disposed at one end of the barrel 1, two hollow shafts 4 are respectively fixedly mounted at two ends of the barrel 1 through bolts, one hollow shaft 4 is provided with a feeding port 41, and the other hollow shaft 4 is provided with a discharging port 42. Two hollow shafts 4 are respectively fixedly provided with a support 43, the hollow shafts 4 are rotatably connected with the supports 43 through bearings, and the rotation axis is along the axial direction of the cylinder 1. The inner wall of the cylinder 1 is fixedly provided with a corrugated lining plate 11 attached to the inner wall of the cylinder 1, a plurality of ball milling bodies 12 with different diameters are arranged in the cylinder 1, and the ball milling bodies 12 are usually steel balls or steel forgings. The power device 2 comprises a driving motor 21, a speed reducer 22 connected to the output end of the driving motor 21, a first gear 23 connected to one end of the speed reducer 22 far away from the driving motor 21, and a second gear 24 engaged with the first gear 23, wherein the second gear 24 is clamped on the outer peripheral surface of the barrel 1 close to the feeding port 41. The material to be ground enters the barrel body 1 through the feeding port 41, the driving motor 21 drives the first gear 23 to rotate, the second gear 24 and the barrel body 1 are driven by the first gear 23 to rotate, the ball milling body 12 in the barrel body 1 rotates to a certain height along with the barrel body 1, when the gravity of the ball milling body is greater than the centrifugal force, the ball milling body is separated from the inner lining plate 11 to be thrown or rolled down, and the material is crushed through impact.

Cooling device 3 includes three water pipes 31 that set up in barrel 1 one side and three shower nozzle 32 of connecting respectively in three water pipes 31, and shower nozzle 32 is along the equidistant setting of arranging of the direction that is on a parallel with barrel 1 axis, and the nodical top that is located barrel 1 axis of the direction of spraying of shower nozzle 32 and barrel 1 outer wall. Because shower nozzle 32 sets up in one side of barrel 1, for setting up under barrel 1, then can not flow back to shower nozzle 32 department after the cooling water that sprays out carries dust, the sediment bits in the air or on the barrel 1, effectively reduced the condition that shower nozzle 32 is blockked up by dust, sediment bits and taken place, guaranteed cooling device 3's effective operation. If the spray head 32 is disposed right under the drum 1, most of the cooling water is separated from the drum 1 and falls down at once due to its own weight after the cooling water is sprayed and contacted with the drum 1, so that the heat exchange time with the drum 1 is short. In this embodiment, the contact point of cooling water and 1 outer wall of barrel is located the top of axis of rotation, then the cooling water sprays on 1 back of barrel because self gravity can flow along 1 downstream of barrel to increased with the heat transfer time of barrel 1, be favorable to improving the cooling effect to barrel 1.

Referring to fig. 2 and 3, the cooling device 3 further includes a water tank 33 disposed right below the cylinder 1 and a water pump 34 connected to the water pipe 31, and the cooling water after cooling the cylinder 1 (see fig. 1) falls back into the water tank 33 below, so that the cooling water is recycled and waste of water resources is reduced. The cross-section of the water tank 33 is rectangular, the upper end of the water tank is provided with a bearing net 331 in a sliding manner along the vertical direction, the bearing net 331 comprises a plurality of vertical plates 3311 which are long and fixed in a staggered manner, and the vertical plates 3311 are vertically connected with other vertical plates 3311 along the length direction of the vertical plates 3311, so that the bearing net 331 has strong bearing capacity and can support workshop personnel or small equipment. The first filter screen 332 is arranged below the bearing screen 331 in a sliding manner along the vertical direction, so that the backflow cooling water is filtered, and impurities are reduced from entering the bottom of the water tank 33. Three water supply ports 333 are formed in the side wall of the water tank 33, the water pipe 31 is connected to the water tank 33 through the water supply ports 333, and the water supply ports 333 are located at the middle position between the bottom of the water tank 33 and the first filter 332, so that the situation that the water supply ports 333 are blocked by impurities and slag chips deposited on the bottom of the water tank 33 is reduced. The second filter screen 334 attached to the side wall of the water supply opening 333 is disposed at the water supply opening 333, so that impurities entering the water pipe 31 are further reduced, and the probability of blockage of the spray head 32 by the impurities is reduced. The bottom of the water tank 33 is provided with a drain port 335, and a drain valve 336 is provided at the drain port 335.

Referring to fig. 4, a ball mill for processing cement is generally large in size, the installation height of the cylinder 1 is high, in order to ensure the spraying stability of the spray head 32, a support frame 5 is arranged at a position of three water pipes 31 close to the spray head 32, and the water pipes 31 are fixed on the support frame 5 through bolts. The side of each water pipe 31 is fixedly provided with an inspection ladder 6, which is convenient for workshop personnel to adjust, inspect and maintain the water pipes 31 or the spray heads 32.

The outer wall of the water pipe 31 near the spray head 32 is provided with a flow rate valve 311, and workshop personnel can control the spraying speed of the cooling water to a proper value through the flow rate valve 311. When the cooling water flows at a too high speed, the cooling water is easy to sputter outwards when contacting the cylinder 1, only a small part of the cooling water can be attached to the cylinder 1, and the cooling effect is poor; if the cooling water flow rate is too slow, the cooling water cannot be sprayed onto the cylinder 1; the cooling water flow rate is moderate, the amount of the outward sputtering of the cooling water is less, most of the cooling water can smoothly contact the cylinder body 1, so that the retention time on the cylinder body 1 is longer, the heat exchange time of the cooling water and the cylinder body 1 is prolonged, and the cooling effect of the cylinder body 1 is improved. The whole shower nozzle 32 is flat fan-shaped, and a plurality of spraying hole 321 has been seted up to the tip of shower nozzle 32, and spraying hole 321 is arranged along the direction that is on a parallel with 1 axis of barrel equidistant. Because the plurality of spraying holes 321 are arranged and the spraying holes 321 are arranged along the axial direction of the cylinder 1, the cooling area of a single spray head 32 is improved, and the cooling work of the peripheral surface of the whole cylinder 1 is completed under the condition of arranging a small number of spray heads 32.

Referring to fig. 1 and 2, the overall operation of the cooling device 3 is as follows: when the barrel 1 is rotated, the water pump 34 guides the cooling water in the water tank 33 into the water pipe 31 through the water supply port 333, and the cooling water is delivered to the spray head 32 and then sprayed onto the outer wall of the barrel 1. The cooling water contacts heat transfer with barrel 1, reduces the temperature of barrel 1, and the cooling water backward flow after the heat transfer is to the basin 33 of below in, and first filter screen 332 is favorable to filtering the impurity that the cooling water carried in the backward flow process, has realized the cyclic utilization to the cooling water.

The implementation principle of the embodiment is as follows: the spray head 32 of the cooling device 3 is arranged at one side of the cylinder 1, the spray head 32 faces the upper half part of the cylinder 1, and after cooling water is sprayed and contacts the cylinder 1, part of the cooling water can flow along the outer wall of the cylinder 1 under the action of self gravity, so that the heat exchange time of the cooling water and the cylinder 1 is prolonged; through setting up first filter screen 332 and second filter screen 334, reduce the probability that impurity, cinder entering water pipe 31 and lead to setting up the damage of cooling water at the in-process of recycling, be favorable to reducing the influence of impurity to cooling device 3, guarantee cooling device 3's normal operating.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a ball mill, including rotate barrel (1) that sets up, set up in power device (2) and cooling device (3) of barrel (1) one end, its characterized in that: cooling device (3) including set up in water pipe (31) of barrel (1) one side with connect in shower nozzle (32) of water pipe (31), the spray direction of shower nozzle (32) with the nodical position of barrel (1) is in the top of barrel (1) axis of rotation, cooling device (3) still including set up in water pipe (31) are kept away from basin (33) of shower nozzle (32) one end with connect in water pump (34) of water pipe (31), water pipe (31) connect in basin (33), basin (33) are located the below of barrel (1), basin (33) are close to the upper end and are equipped with first filter screen (332).

2. A ball mill according to claim 1, wherein: the joint of the water pipe (31) and the water tank (33) is higher than the bottom of the water tank (33).

3. A ball mill according to claim 1, wherein: and a second filter screen (334) is arranged at the joint of the water tank (33) and the water pipe (31).

4. A ball mill according to claim 1, wherein: the upper end of the water tank (33) is provided with a bearing net (331).

5. A ball mill according to claim 1, wherein: one end of the water pipe (31) close to the spray head (32) is provided with a flow rate valve (311).

6. A ball mill according to claim 1, wherein: a plurality of spraying holes (321) are formed in the spray head (32), and the spraying holes (321) are arranged in the direction parallel to the rotation axis of the barrel body (1).

7. A ball mill according to claim 1, wherein: an overhaul ladder (6) is arranged at the spray head (32).