Device for improving handling capacity and fineness of ball mill

Abstract

The utility model discloses a device for improving the handling capacity and fineness of a ball mill. In the prior art, a material returning screw is arranged on the inner wall of a discharging bush, so that the treatment capacity and the fineness of the ball mill are improved, but the lifting force is limited, and part of steel balls are still spit out. The utility model provides a device for improving handling capacity and fineness of a ball mill, which comprises a mounting barrel and a separation net, flanges are arranged at two ends of the mounting barrel and are respectively matched with a bushing and a drum screen for mounting, the separation net is mounted inside the mounting barrel to effectively block steel balls, and then the steel balls are returned into the ball mill through a material returning screw of a discharging bushing. Mineral powder is ground again, so that the fineness of the ball mill is improved; mineral powder primary screening is achieved, the mineral powder is prevented from blocking the drum screen, and the cleaning difficulty is lowered; the steel balls are prevented from damaging the drum screen, and the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the research field of mineral flotation separation equipment, and specifically relates to a device for improving the processing capacity and fineness of a ball mill. BACKGROUND

[0002] The ball mill is a key equipment for further crushing after material crushing, and this type of ore mill is provided with a certain number of steel balls as grinding medium in the barrel. It is widely used in cement, silicate products, new building materials, refractory materials, chemical fertilizers, black and non-ferrous metal beneficiation and glass ceramics production industry, and is suitable for dry or wet grinding of various ores and other grindable materials. The ball mill is suitable for grinding various ores and other materials and is widely used in mineral processing, building materials and chemical industry, and can be divided into dry and wet grinding modes.

[0003] The discharge part of the ball mill is responsible for discharging the ground material. According to the search, the Chinese patent with the patent number CN208928303U discloses an overflow type ball mill discharge liner. The inner wall of the liner is provided with a return spiral opposite to the turning direction of the ball mill, and the return spiral is higher than the inner wall of the liner, which realizes the blocking of the steel balls and the mineral powder, and improves the processing capacity and fineness of the ball mill, but the improvement is limited, and part of the steel balls will still be discharged.

[0004] The existing technology has the following problems: the inner diameter of the discharge liner is large, which causes the steel balls to be discharged when the number of steel balls is increased, and the number of steel balls cannot be controlled, resulting in poor grinding of the mineral. SUMMARY

[0005] In view of the above problems, the utility model aims to provide a device for improving the processing capacity and fineness of a ball mill, which can effectively block the protrusion of steel balls and solve the problem of ball discharge caused by the ineffective blocking of the return spiral on the inner wall of the discharge liner.

[0006] The main idea of the technical solution adopted by the utility model is: the designed separation net can effectively prevent the protrusion of steel balls, and the steel balls are returned to the ball mill through the elastic force of the separation net and the return spiral on the discharge liner, so that the steel balls further grind the mineral powder.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0008] A device for improving the processing capacity and fineness of a ball mill, characterized in that it comprises a mounting barrel, an annular mounting groove is opened on the inner wall of the mounting barrel, and the annular mounting groove is connected with the separation net through a clamping key.

[0009] Through the above technical solution, further: the mounting barrel is provided with a flange face at both ends, and is respectively installed in cooperation with a discharge liner and a cylindrical screen.

[0010] Through the above technical scheme, further: the inner and outer diameters of the mounting cylinder body and the bushing and the inner and outer diameters of the cylindrical screen are same.

[0011] Through the above technical scheme, further:

[0012] The end surface of the annular mounting groove is provided with a clamping key to prevent the screen from rotating.

[0013] The height of the annular mounting groove is slightly greater than the thickness of the screen.

[0014] Through the above technical scheme, further: the shape of the clamping key is a cylinder or a hook head.

[0015] The beneficial effects of the present application are:

[0016] 1. The screen is mounted at the end of the mounting cylinder body to effectively block the steel balls, and then the steel balls are returned to the ball mill by the return spiral to regrind the mineral powder, thereby improving the fineness of the ball mill;

[0017] 2. The screen is made of a material with large elasticity and high toughness, which can bounce the steel balls back to the ball mill for regrinding the mineral powder;

[0018] 3. The screen can perform primary screening on the mineral to prevent the mineral from blocking the cylindrical screen and reduce the cleaning difficulty;

[0019] 4. The screen blocks the steel balls from entering the cylindrical screen to prevent the steel balls from damaging the cylindrical screen, thereby increasing the service life of the cylindrical screen and reducing the maintenance cost;

[0020] 5. The annular mounting groove is designed to quickly realize the disassembly and installation of the screen. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows.

[0022] Figure 1 It is a device for improving the processing capacity and fineness of a ball mill and a mounting structure diagram of a discharge bushing and a cylindrical screen.

[0023] Figure 2 It is a device structure diagram for improving the processing capacity and fineness of a ball mill.

[0024] Figure 3 It is a structure diagram of an embodiment of the present application.

[0025] Figure 4 It is Figure 3 It is an enlarged view of A.

[0026] Figure 5 It is a structure diagram of an embodiment of the present application.

[0027] Figure 6 For Figure 5 B is an enlarged view;

[0028] In the figure: installation cylinder 1; annular installation groove 2; clamping key 3; separation net 4; discharge bushing 5; cylindrical screen 6; bolt assembly 7. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0031] The inventor found in practice that the inner diameter of the discharge bush of the ball mill is large, which causes the steel balls to be spit out when the number of steel balls is increased, the number of steel balls cannot be controlled as desired, and finally the grinding fineness of the ore is poor, the return screw is higher than the inner wall of the discharge bush, the processing capacity and fineness of the ball mill are improved to a limited extent, and part of the steel balls are still spit out.

[0032] Based on the above finding, the present application proposes a device for improving the processing capacity and fineness of a ball mill. The separation net can effectively prevent the steel balls from protruding, and the steel balls are returned to the ball mill through the return screw on the bush, so that the steel balls further grind the ore powder.

[0033] Embodiment one

[0034] Referring to Figures 1-2 The present application discloses a device for improving the processing capacity and fineness of a ball mill, which comprises an installation cylinder 1 and a separation net 2. The installation cylinder 1 is provided with flange faces at both ends, and is installed in cooperation with a discharge bush 5 and a cylindrical screen 6. The bolt installation holes at both ends of the installation cylinder 1 correspond to the bolt installation holes of the discharge bush 5 and the cylindrical screen 6, so as to ensure that the installation cylinder 1 can be smoothly installed between the discharge bush 5 and the cylindrical screen 6. The flange faces have the same size as the discharge bush 5 and the cylindrical screen 6, and the outer diameter is 1350 mm. The inner and outer diameters of the installation cylinder 1 are the same as those of the discharge bush 5 and the cylindrical screen 6, the inner diameter is 850 mm, and the outer diameter is 1010 mm, so as to ensure smooth transition.

[0035] Specifically, the mounting cylinder body 1 is provided with an annular mounting groove 2 at both ends, the height of the annular mounting groove 2 is slightly greater than the thickness of the screen 4, which prevents the screen 4 from interfering with the discharge bushing 5 and the cylindrical screen 6 during installation, the size of the annular mounting groove 2 is adapted to the screen 4, which is greater than the inner diameter of the mounting cylinder body 1 and smaller than the outer diameter of the mounting cylinder body 1.

[0036] The end surface of the annular mounting groove 2 is provided with a clamping key 3, which prevents the screen 4 from rotating with the discharge bushing 5 and the cylindrical screen 6 in the annular mounting groove 2, thereby preventing wear on the screen 2 and the mounting cylinder body 1. The clamping key 3 is cylindrical, with a height slightly lower than that of the annular mounting groove 2, and a size matching the size of the mounting hole of the screen 4.

[0037] It is worth noting that the screen 4 is made of a material with high elasticity and toughness, and is installed at the end of the mounting cylinder body 1. When the steel balls are discharged from the discharge bushing 5, the elasticity of the screen 4 and the return spiral of the discharge bushing 5 effectively block and return the steel balls to the ball mill, thereby further grinding the minerals and improving the fineness of the mineral powder. When the mineral powder and steel balls are added in excess, the screen will block the steel balls and prevent relatively large minerals from passing through the screen. The steel balls and minerals are returned to the ball mill through the return spiral on the discharge bushing 5, which further grinds the minerals, increases the processing capacity of the ball mill to a certain extent, and performs primary screening on the minerals to prevent the minerals from blocking the cylindrical screen 6, thereby reducing the difficulty of cleaning.

[0038] One use process of the embodiment is as follows:

[0039] According to the required fineness of the mineral powder, the size of the screen 4 aperture is determined to ensure that the screen 4 aperture is smaller than the diameter of the smallest steel ball. A suitable screen 4 is selected, the mounting hole of the screen 4 is aligned with the clamping key 3, the screen 4 is smoothly installed in the annular mounting groove 2, and then the installed combination is connected with the bolt assembly 7 after the flange bolt mounting hole of the mounting cylinder body 1 is aligned with the flange bolt mounting hole of the discharge bushing 5. According to the requirements, the number of screens 4 installed in the annular mounting groove 2 is determined. If only one screen 4 is needed, the cylindrical screen 6 is installed at the other end of the mounting cylinder body 1 according to the similar operation described above. If two or more screens are needed, the screen 2 is installed in the mounting cylinder body 1 according to the operation described above, and finally the cylindrical screen 6 is installed at the other end of the mounting cylinder body 1.

[0040] Embodiment two

[0041] Reference Figures 5-6 The difference between the embodiment one and the embodiment two is that the clamping key 3 is in the shape of a hook. The hook-shaped clamping key 3 not only can clamp the screen 4 on the mounting cylinder body 1, but also can prevent the screen 4 from being detached from the clamping key 3.

[0042] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for increasing the processing capacity and fineness of a ball mill, characterized in that: It comprises a mounting cylinder (1), an annular mounting groove (2) is formed on the inner wall of the mounting cylinder (1), and the annular mounting groove (2) is connected to the partition net (4) through a clamping key (3); The height of the annular mounting groove (2) is slightly greater than the thickness of the partition net (4); The key (3) is in the shape of a cylinder or a hook.

2. The device for improving the processing capacity and fineness of a ball mill according to claim 1, characterized in that: The mounting cylinder (1) is provided with flange surfaces at both ends, which are respectively mounted in conjunction with the discharge bushing (5) and the cylindrical screen (6).

3. The device for improving the processing capacity and fineness of a ball mill according to claim 1, characterized in that: The inner and outer diameters of the installation cylinder (1) are the same as those of the discharge bushing (5) and the cylindrical screen (6).

4. The device for improving the processing capacity and fineness of a ball mill according to claim 1, characterized in that: The end surface of the annular mounting groove (2) is provided with a latch key (3) to prevent the partition (4) from rotating.

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