Ball-milling cylinder and horizontal ball-milling machine

Abstract

The invention discloses a ball-milling cylinder and a horizontal ball mill, and aims to overcome the defects that cooling water is only cooled at the bottom of the ball-milling cylinder for the horizontal ball mill and the cooling effect is poor in a cooling method that the ball-milling cylinder is arranged into two layers in the prior art. The technical problem is solved through the following technical scheme that the cooling device comprises an inner container and a shell, the shell is arranged on the periphery of the inner container in a sleeving mode, and the shell and the inner container are matched to form a cooling cavity; a plurality of cooling water pipes are uniformly distributed on the outer side wall of the inner container and are communicated with the water inlet header pipe; a plurality of cooling ring cavities arranged in the axis direction of the inner container are formed in the cooling cavity, and a plurality of small cooling cavities are formed in the cooling ring cavities; at least one water outlet hole is formed in each small cooling cavity, and the adjacent annular cooling cavities are communicated through the water outlet holes; the water outlet ends of the cooling water pipes penetrate through the cooling ring cavities and then are located in the cooling ring cavity at the topmost end. And a water outlet is formed in the side wall of the bottommost cooling ring cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of crushing devices, and more specifically, it relates to a horizontal ball mill cooling device. Background Art

[0002] During the production process of cemented carbide, ball milling is one of the main means for making the mixture. During the ball milling process, alloy balls and metal powder materials are mixed and loaded into the ball mill cylinder. By rotating the ball mill cylinder, different metal powders are broken and mixed evenly. In this process, a large amount of heat is generated due to the collision and friction of the alloy balls. These heats will cause the temperature of the ball milling medium to rise, increase the oxidation amount of the powder material. And during the ball milling process, the ball mill cylinder is a sealed sleeve, and the ball milling medium generally uses volatile liquids such as gasoline and alcohol. Excessive temperature will cause these media to volatilize. In a sealed environment, a large amount of steam is generated, accompanied by a huge explosion risk. The volatilization of the medium leads to a reduction in the amount of the medium, which will also affect the ball milling effect. Therefore, during the ball milling process, a good cooling means is essential.

[0003] Most of the existing ball mills use direct flushing with cooling water, or the ball mill cylinder is set into two layers, and the cooling water is in the interlayer for cooling. For direct flushing cooling, there will be a large amount of cooling water splashing on site, wasting water resources and causing difficulties in on-site management at the same time; for the cooling method of setting the ball mill cylinder into two layers, for an inclined ball mill, the cooling water only cools at the bottom of the ball mill cylinder, and the cooling effect is poor.

[0004] For example, in a patent document with the publication number CN106076512A and the patent name of a ball mill, a technical solution for cooling the ball mill by setting an annular jacket is disclosed. In this solution, the cooling water only cools at the bottom of the ball mill cylinder, and the cooling effect is poor. Summary of the Invention

[0005] The present invention overcomes the problems in the prior art that for the direct flushing cooling of a horizontal ball mill, there will be a large amount of cooling water splashing on site, wasting water resources and causing difficulties in on-site management at the same time; or for the cooling method of setting the ball mill cylinder into two layers, for a horizontal ball mill, the cooling water only cools at the bottom of the ball mill cylinder, and the cooling effect is poor. The present invention provides a ball mill cylinder which utilizes the rotation inside the ball mill cylinder to drive the internal cooling medium to move upward from the bottom end. When the medium reaches the top end, it will flow along the outer surface of the ball mill cylinder to cool the ball mill cylinder.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: a ball mill cylinder, comprising: an inner liner and an outer shell. The outer shell is sleeved around the periphery of the inner liner, and the outer shell and the inner liner cooperate to form a cooling cavity; A number of cooling water pipes are evenly distributed on the outer side wall of the inner liner, and a number of cooling water pipes are communicated with a total water inlet pipe; A number of cooling ring cavities are arranged along the axis direction of the inner tank in the cooling cavity, and a number of cooling small cavities are arranged in the cooling ring cavities; at least one water outlet hole is arranged on each cooling small cavity, and the water outlet holes communicate the adjacent cooling ring cavities; The water outlet ends of several cooling water pipes pass through several cooling ring cavities and are located in the uppermost cooling ring cavity; a water outlet is arranged on the side wall of the lowermost cooling ring cavity.

[0007] In this application, the ball mill cylinder is placed obliquely during use. After the cooling water inlet main pipe is shunted, the cooling water flows to several cooling water pipes, and then the cooling water flows out from the water outlet end at the top of the cooling water pipe. The flowing out cooling water falls into the cooling small cavity in the uppermost cooling ring cavity of the cooling cavity; due to the factor of gravity, the cooling water flowing out from the cooling water pipes in the lower half will not fall on the outer wall of the inner tank; while the cooling water flowing out from the cooling water pipes in the upper half will fall on the outer wall of the inner tank due to the factor of gravity, which has a good cooling effect on the outer wall of the inner tank.

[0008] When the cooling small cavity moves from the lower end point to the upper end point, the water in the cooling small cavity will remain in the cooling small cavity. When the cooling water remains in the cooling small cavity, it can also cool the outer wall of the inner tank; when the cooling small cavity moves from the upper end point to the lower end point, the water in the cooling small cavity will flow along the outer wall of the inner tank, thereby cooling the outer wall of the inner tank. During this process, the cooling water flows out from the water outlet and flows into the cooling small cavity of the next adjacent cooling ring cavity, repeating the above steps to cool the outer wall of the inner tank.

[0009] Therefore, in this application, it is not necessary to fill the cooling cavity with cooling water to cool the outer wall of the inner tank, and during the cooling process, the action of pouring cooling water on the outer wall of the inner tank is simulated, so that the outer wall of the inner tank is fully cooled, reducing problems such as a large amount of heat generated by the collision and friction of alloy balls, resulting in an increase in the temperature of the ball milling medium, an increase in the oxygen content of the powder, and other risks or impacts.

[0010] Preferably, the cooling water pipe is attached to the outer side wall of the inner tank.

[0011] When the cooling water flows in the cooling water pipe, it can cool the outer surface of the inner tank and improve the cooling effect of the inner tank.

[0012] Preferably, the number of cooling small cavities arranged in each cooling ring cavity is the same, and at least one cooling water pipe is correspondingly arranged in each cooling small cavity.

[0013] The above settings enable a cooling water pipe to be correspondingly arranged in each cooling small cavity when the ball mill cylinder operates, so as to fill the cooling small cavity with water for cooling.

[0014] Preferably, the cross-section of the cooling water pipe is set to an arc shape that fits the outer wall of the inner tank.

[0015] Setting the cross-section of the cooling water pipe to an arc shape that fits the outer wall of the inner tank can further improve the heat dissipation effect of the inner tank.

[0016] Preferably, in the cooling small cavity within the bottommost cooling ring cavity, several corresponding water outlets are connected to the water outlet pipe, and the total water inlet pipe is arranged inside the total water outlet pipe.

[0017] Arranging the total water inlet pipe inside the total water outlet pipe can make the overall water pipe layout more compact.

[0018] Preferably, a heat insulation layer is provided on the outer wall of the total water inlet pipe.

[0019] Providing a heat insulation layer on the outer wall of the total water inlet pipe can prevent the heat in the total water outlet pipe from being transferred to the position of the total water inlet pipe and prevent the temperature of the total water inlet pipe from rising.

[0020] Preferably, the total water outlet pipe is connected to several water outlets through a water outlet flange.

[0021] This facilitates the return of the cooling water in the cooling cavity through the total water outlet pipe. After the returned cooling water is cooled by the circulating condensation system (cooling device), it enters the cooling cavity again through the total water inlet pipe to cool the inner tank.

[0022] Preferably, at the opening of the cooling cavity, there is a sealing component for closing the opening. The sealing component includes a housing flange and an inner tank flange provided at the opening of the cooling cavity, and the inner tank flange is adapted to the housing flange.

[0023] The total water outlet pipe is connected to the installation pipe through a water outlet flange, which facilitates the installation of the total water outlet pipe.

[0024] Preferably, 6 to 12 cooling small cavities are provided in each cooling ring cavity.

[0025] Within this quantity range, there is sufficient space in the cooling small cavity to retain the cooling water and cool the outer wall of the inner tank.

[0026] This application also discloses a horizontal ball mill, which includes the above-mentioned ball mill cylinder and further includes a frame, and the ball mill cylinder is inclined and arranged on the frame.

[0027] Using the above-mentioned ball mill, it is not necessary to fill the cooling cavity with cooling water to cool the outer wall of the inner tank. During the cooling process, the action of pouring cooling water on the outer wall of the inner tank is simulated, so that the outer wall of the inner tank can be fully cooled, reducing the large amount of heat generated by the collision and friction of alloy balls, resulting in an increase in the temperature of the ball milling medium and an increase in the oxidation amount of the powder material.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows: The ball mill cylinder is placed obliquely during use. Cooling water is diverted from the main inlet pipe and flows into several cooling water pipes. Then, the cooling water flows out from the water outlet end at the top of the cooling water pipe, and the flowing-out cooling water falls into the cooling small cavity in the cooling ring cavity at the top of the cooling cavity. Due to the factor of gravity, the cooling water flowing out from the cooling water pipes in the lower half will not fall on the outer wall of the inner cylinder. However, due to the factor of gravity, the cooling water flowing out from the cooling water pipes in the upper half will fall on the outer wall of the inner cylinder, achieving a good cooling effect on the outer wall of the inner cylinder.

[0029] When the cooling small cavity moves from the lower end point to the upper end point, the water in the cooling small cavity will remain in the cooling small cavity. When the cooling water remains in the cooling small cavity, it can also cool the outer wall of the inner cylinder. When the cooling small cavity moves from the upper end point to the lower end point, the water in the cooling small cavity will flow along the outer wall of the inner cylinder, thereby cooling the outer wall of the inner cylinder. During this process, the cooling water flows out from the water outlet and flows into the cooling small cavity of the next adjacent cooling ring cavity, repeating the above steps to cool the outer wall of the inner cylinder.

[0030] That is to say, when the cooling small cavity moves from the lower end point to the upper end point, the cooling small cavity is equivalent to "scooping water", and when the cooling small cavity moves from the upper end point to the lower end point, the cooling small cavity is equivalent to "pouring water" on the outer side wall of the inner cylinder to cool the outer surface of the inner cylinder. Therefore, in order to increase the amount of "scooping water", the water outlet is arranged at one end of the cooling small cavity. When the cooling small cavity moves from the lower end point to the upper end point, the water outlet is located at the upper end position of the cooling small cavity. For example, when the ball mill cylinder rotates clockwise (as Figure 3 shown), at this time, the water outlets of the cooling small cavities in the left half are located at the upper end, and when the ball mill cylinder rotates counterclockwise (as Figure 4 shown), at this time, the water outlets of the cooling small cavities in the right half are located at the upper end, ensuring the amount of "scooping water".

[0031] Therefore, in the present application, it is not necessary to fill the cooling cavity with cooling water to cool the outer wall of the inner cylinder. Moreover, during the cooling process, the action of pouring cooling water on the outer wall of the inner cylinder is simulated, enabling sufficient cooling of the outer wall of the inner cylinder, reducing the large amount of heat generated by the collision and friction of alloy balls, preventing the temperature of the ball milling medium from rising, and increasing the oxidation amount of the powder material. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic structural diagram of the present invention during use.

[0033] Figure 2 is a cross-sectional view of the ball mill cylinder of the present invention along the axial plane.

[0034] Figure 3 is Figure 2Cross-sectional view in the A-A direction in the middle.

[0035] Figure 4 It is a distribution diagram of the water outlet holes of the inner tank of the present invention under counterclockwise rotation.

[0036] Figure 5 It is a three-dimensional structure diagram of the rotary valve plate of the present invention.

[0037] Figure 6 It is a schematic structural diagram when the rotary valve plate is installed on the water outlet hole of the present invention.

[0038] In the figure: 1. Inner tank, 11. Inner tank flange, 111. Sealing ring, 12. Upper cover; 2. Outer shell, 21. Outer shell flange; 3. Cooling cavity, 31. Cooling ring cavity, 32. Cooling small cavity, 33. Water outlet hole, 34. Water outlet; 4. Cooling water pipe, 41. Inlet main pipe; 5. Horizontal water baffle, 51. Vertical water baffle; 6. Water outlet main pipe, 61. Installation pipe, 62. Water outlet flange; 7. Axis plane, 71. Vertical plane, 711. Upper end point, 712. Lower end point; 8. Rotary valve plate, 81. Arc groove, 82. Weighted convex block; 9. Frame. Specific implementation mode

[0039] The technical solution of the present invention will be further specifically described below through specific embodiments and in conjunction with the drawings: Embodiment 1: Refer to Figures 1 to 4 As shown, a ball mill includes: an inner tank 1 and an outer shell 2. The outer shell 2 is sleeved around the inner tank 1, and the outer shell 2 and the inner tank 1 cooperate to form a cooling cavity 3; A number of cooling water pipes 4 are evenly distributed on the outer side wall of the inner tank 1, and a number of cooling water pipes 4 are communicated with the inlet main pipe 41; A number of cooling ring cavities 31 arranged along the axis direction of the inner tank 1 are provided in the cooling cavity 3, and a number of cooling small cavities 32 are provided in the cooling ring cavities 31; at least one water outlet hole 33 is provided on each cooling small cavity 32, and the water outlet hole 33 communicates the adjacent cooling ring cavities 31; After the water outlet ends of a number of cooling water pipes 4 pass through a number of cooling ring cavities 31, they are located in the topmost cooling ring cavity 31; a water outlet 34 is provided on the side wall of the bottommost cooling ring cavity 31.

[0040] For a clearer description, when the ball milling cylinder is placed obliquely, the axis of the ball milling cylinder can be translated along the horizontal direction to form an axis plane 7. Taking this axis plane 7 as the dividing plane, the upper part is above the axis plane 7, and the lower part is below the axis plane 7. Additionally, the axis of the ball milling cylinder is translated along the vertical direction to form a vertical plane 71. The intersection points of the vertical plane 71 with the upper and lower ends of the cooling ring cavity 31 are the upper end point 711 and the lower end point 712 respectively.

[0041] In this application, the ball milling cylinder is placed obliquely during use. After the total cooling water inlet pipe 41 is branched, the cooling water flows to several cooling water pipes 4. Then the cooling water flows out from the water outlet end at the top of the cooling water pipe 4, and the flowing-out cooling water falls into the cooling small cavity 32 in the cooling ring cavity 31 at the top of the cooling cavity 3. Due to the factor of gravity, the cooling water flowing out from the cooling water pipes 4 in the lower part will not fall on the outer wall of the inner cylinder 1. However, due to the factor of gravity, the cooling water flowing out from the cooling water pipes 4 in the upper part will fall on the outer wall of the inner cylinder 1, achieving a good cooling effect on the outer wall of the inner cylinder 1.

[0042] When the cooling small cavity 32 moves from the lower end point 712 towards the upper end point 711, the water in the cooling small cavity 32 will remain in the cooling small cavity 32. When the cooling water remains in the cooling small cavity 32, it can also cool the outer wall of the inner cylinder 1. When the cooling small cavity 32 moves from the upper end point 711 towards the lower end point 712, the water in the cooling small cavity 32 will flow along the outer wall of the inner cylinder 1, thereby cooling the outer wall of the inner cylinder 1. During this process, the cooling water flows out from the water outlet 34 and flows into the cooling small cavity 32 of the next adjacent cooling ring cavity 31, repeating the above steps to cool the outer wall of the inner cylinder 1.

[0043] Therefore, in this application, it is not necessary to fill the cooling cavity 3 with cooling water to cool the outer wall of the inner cylinder 1. And during the cooling process, the action of pouring the cooling water on the outer wall of the inner cylinder 1 is simulated, enabling sufficient cooling of the outer wall of the inner cylinder 1, reducing problems such as a large amount of heat generated by the collision and friction of alloy balls, leading to an increase in the temperature of the ball milling medium, an increase in the oxygen content of the powder material, and other risks or impacts.

[0044] Example 2: Refer to Figures 1 to 4 A ball milling cylinder as shown, including: an inner cylinder 1 and an outer shell 2. The outer shell 2 is sleeved around the inner cylinder 1, and a cooling cavity 3 is formed by the cooperation between the outer shell 2 and the inner cylinder 1.

[0045] A number of cooling water pipes 4 are evenly distributed on the outer side wall of the inner cylinder 1, and several cooling water pipes 4 are communicated with the total inlet pipe 41. A number of cooling ring cavities 31 are arranged in the cooling cavity 3 along the axis direction of the inner tank 1, and a number of cooling small cavities 32 are arranged in the cooling ring cavities 31; at least one water outlet hole 33 is arranged on each cooling small cavity 32, and the water outlet hole 33 communicates the adjacent cooling ring cavities 31; After the water outlet ends of a number of cooling water pipes 4 pass through a number of cooling ring cavities 31, they are located in the topmost cooling ring cavity 31; a water outlet 34 is arranged on the side wall of the bottommost cooling ring cavity 31.

[0046] A number of transverse water baffle plates 5 are arranged in the cooling cavity 3, and the number of transverse water baffle plates 5 is arranged along the axis direction of the ball mill cylinder, and each transverse water baffle plate 5 is perpendicular to the axis of the ball mill cylinder. The adjacent transverse water baffle plates 5 cooperate to form the cooling ring cavity 31. A number of longitudinal water baffle plates 51 that can separate the cooling ring cavity 31 are arranged in the cooling ring cavity 31, the longitudinal water baffle plates 51 are arranged parallel to the axis direction of the ball mill cylinder, and the number of longitudinal water baffle plates 51 divides the cooling ring cavity 31 into a number of cooling small cavities 32.

[0047] The number of the cooling small cavities 32 can be set to 6 to 12 according to the actual situation. Within this number range, there is enough space in the cooling small cavities 32 to store cooling water and cool the outer wall of the inner tank 1.

[0048] In order to facilitate the arrangement of the cooling water pipes 4, the number of cooling small cavities 32 arranged in each cooling ring cavity 31 is the same, and at least one cooling water pipe 4 is correspondingly arranged in each cooling small cavity 32. For example, in this embodiment, the number of the cooling water pipes 4 and the cooling small cavities 32 in this embodiment are both set to 8. Thus, when the ball mill cylinder is running, a cooling water pipe 4 is correspondingly arranged in each cooling small cavity 32 to fill the cooling small cavity 32 with water for cooling.

[0049] In one embodiment, the cooling water pipe 4 is attached to the outer side wall of the inner tank 1. When the cooling water flows in the cooling water pipe 4, the outer surface of the inner tank 1 can be cooled, improving the cooling effect of the inner tank 1. In addition, in order to increase the area of the cooling water pipe 4 attached to the outer wall of the inner tank 1, the cross-section of the cooling water pipe 4 is set to an arc shape that fits the outer side wall of the inner tank 1, which can further improve the heat dissipation effect of the inner tank 1.

[0050] In one embodiment, in the cooling cavity 32 in the cooling ring cavity 31 at the bottom, the corresponding several water outlets 34 are all connected to the water outlet main pipe 6, and the water inlet main pipe 41 is arranged in the water outlet main pipe 6. After the cooling water cools the outer wall of the inner tank 1 in the cooling cavity 3, it flows out from the water outlet main pipe 6; at the same time, the water inlet main pipe 41 is arranged in the water outlet main pipe 6, which can make the overall water pipe layout more compact. In addition, a thermal insulation layer is arranged on the outer wall of the water inlet main pipe 41 to prevent the heat in the water outlet main pipe 6 from being transferred to the position of the water inlet main pipe 41; and in order to further prevent the heat in the cooling water pipe 4 from being dissipated into the cooling cavity 32, except for the contact surface between the cooling water pipe 4 and the outer wall of the inner tank 1, a thermal insulation layer can be arranged on the remaining surfaces to prevent the cooling water in the cooling water pipe 4 from exchanging heat with the cooling water in the cooling cavity 32.

[0051] In one embodiment, in order to facilitate maintenance and installation of the water outlet main pipe 6, a mounting pipe 61 is provided at the bottom of the housing 2, and the water outlets 34 on the cooling small chambers 32 in the bottom cooling ring chamber 31 are all connected to the mounting pipe 61. That is, the water outlets 34 on the cooling small chambers 32 in the bottom cooling ring chamber 31 are collectively connected to the mounting pipe 61, and a water outlet flange 62 is provided at the mounting pipe 61. The water outlet main pipe 6 is connected to the mounting pipe 61 through the water outlet flange 62, which facilitates the installation of the water outlet main pipe 6.

[0052] In one embodiment, a sealing assembly is provided at the opening of the cooling chamber 3 to close the opening, and the sealing assembly includes an outer shell flange 21 and an inner liner flange 11 provided at the opening of the cooling chamber 3, the outer shell flange 21 is fixedly connected to the outer shell 2, the inner liner flange 11 is fixedly connected to the inner liner 1, and the inner liner flange 11 is adapted to the outer shell flange 21. A sealing ring 111 is provided between the inner liner flange 11 and the outer shell flange 21 to increase the sealing performance of the two. The provision of the sealing assembly can facilitate the cleaning of the cooling chamber 3.

[0053] In order to describe more cleaning, when the ball mill is tilted, the axis of the ball mill can be translated in the horizontal direction to form an axis plane 7. The axis plane 7 forms an angle with the horizontal plane, which is the tilt angle C of the ball mill. With the axis plane 7 as the dividing plane, the part above the axis plane 7 is the upper half, and the part below the axis plane 7 is the lower half. In addition, the axis of the ball mill is translated in the vertical direction to form a vertical plane 71. The intersection of the vertical plane 71 and the upper and lower ends of the cooling ring cavity 31 are the upper endpoint 711 and the lower endpoint 712, respectively.

[0054] In this application, the ball milling cylinder is placed obliquely during use. After the cooling water is diverted from the total water inlet pipe 41, it flows into several cooling water pipes 4. Then, the cooling water flows out from the water outlet end at the top of the cooling water pipe 4, and the flowing-out cooling water falls into the cooling small cavity 32 within the cooling ring cavity 31 at the topmost part of the cooling cavity 3. Due to the factor of gravity, the cooling water flowing out from the lower half of the cooling water pipe 4 will not fall on the outer wall of the inner cylinder 1; while the cooling water flowing out from the upper half of the cooling water pipe 4 will fall on the outer wall of the inner cylinder 1 due to the factor of gravity, achieving a good cooling effect on the outer wall of the inner cylinder 1.

[0055] When the cooling small cavity 32 moves from the lower end point 712 towards the upper end point 711, the water in the cooling small cavity 32 will remain in the cooling small cavity 32. When the cooling water remains in the cooling small cavity 32, it can also cool the outer wall of the inner cylinder 1; when the cooling small cavity 32 moves from the upper end point 711 towards the lower end point 712, the water in the cooling small cavity 32 will flow along the outer wall of the inner cylinder 1, thereby cooling the outer wall of the inner cylinder 1. During this process, the cooling water flows out from the water outlet 34 and flows into the cooling small cavity 32 of the next adjacent cooling ring cavity 31, repeating the above steps to cool the outer wall of the inner cylinder 1.

[0056] That is to say, during the process of the cooling small cavity 32 moving from the lower end point 712 to the upper end point 711, the cooling small cavity 32 is equivalent to "scooping water", and during the process of the cooling small cavity 32 moving from the upper end point 711 to the lower end point 712, the cooling small cavity 32 is equivalent to "pouring water" on the outer side wall of the inner cylinder 1 to cool the outer surface of the inner cylinder 1. Therefore, in order to increase the amount of "scooping water", the water outlet 34 is arranged at one end of the cooling small cavity 32. When the cooling small cavity 32 moves from the lower end point 712 to the upper end point 711, the water outlet 34 is located at the upper end position of the cooling small cavity 32. For example, when the ball milling cylinder rotates clockwise (as Figure 3 shown), at this time, the water outlet 34 of the left half of the cooling small cavity 32 is at the upper end, and when the ball milling cylinder rotates counterclockwise (as Figure 4 shown), at this time, the water outlet 34 of the right half of the cooling small cavity 32 is at the upper end, ensuring the amount of "scooping water".

[0057] Therefore, in this application, it is not necessary to fill the cooling cavity 3 with cooling water to cool the outer wall of the inner cylinder 1. Moreover, during the cooling process, the action of pouring cooling water on the outer wall of the inner cylinder 1 is simulated, enabling the outer wall of the inner cylinder 1 to be fully cooled, reducing the generation of a large amount of heat due to the collision and friction of alloy balls, preventing the temperature of the ball milling medium from rising, and increasing the oxidation amount of the powder material.

[0058] Example 3: Refer to Figures 1 to 6A ball milling cylinder is shown, including: an inner cylinder 1 and an outer shell 2. The outer shell 2 is sleeved around the periphery of the inner cylinder 1, and a cooling cavity 3 is formed between the outer shell 2 and the inner cylinder 1.

[0059] A number of cooling water pipes 4 are evenly distributed on the outer side wall of the inner cylinder 1, and a number of cooling water pipes 4 are communicated with a water inlet main pipe 41. A number of cooling ring cavities 31 are arranged along the axis direction of the inner cylinder 1 in the cooling cavity 3, and a number of cooling small cavities 32 are arranged in the cooling ring cavities 31; at least one water outlet hole 33 is arranged on each cooling small cavity 32, and the water outlet hole 33 communicates the adjacent cooling ring cavities 31. After the water outlet ends of a number of cooling water pipes 4 pass through a number of cooling ring cavities 31, they are located in the topmost cooling ring cavity 31; a water outlet 34 is arranged on the side wall of the bottommost cooling ring cavity 31.

[0060] A number of transverse water baffle plates 5 are arranged in the cooling cavity 3. The number of transverse water baffle plates 5 is arranged along the axis direction of the ball milling cylinder, and each transverse water baffle plate 5 is perpendicular to the axis of the ball milling cylinder. Cooling ring cavities 31 are formed by cooperation between adjacent transverse water baffle plates 5. A number of longitudinal water baffle plates 51 capable of separating the cooling ring cavities 31 are arranged in the cooling ring cavities 31. The longitudinal water baffle plates 51 are arranged in a direction parallel to the axis direction of the ball milling cylinder, and a number of longitudinal water baffle plates 51 divide the cooling ring cavities 31 into a number of cooling small cavities 32.

[0061] The number of cooling small cavities 32 can be set to 6 to 12 according to actual situations. There is enough space in the cooling small cavities 32 within this number range to retain cooling water and cool the outer wall of the inner cylinder 1.

[0062] In order to facilitate the arrangement of the cooling water pipes 4, the number of cooling small cavities 32 arranged in each cooling ring cavity 31 is the same, and at least one cooling water pipe 4 is correspondingly arranged in each cooling small cavity 32. For example, in this embodiment, the number of cooling water pipes 4 and cooling small cavities 32 in this embodiment are both set to 8. Thus, when the ball milling cylinder is running, a cooling water pipe 4 is correspondingly arranged in each cooling small cavity 32 to fill the cooling small cavity 32 with water for cooling.

[0063] In one embodiment, the cooling water pipe 4 is in contact with the outer side wall of the inner cylinder 1. When the cooling water flows in the cooling water pipe 4, the outer surface of the inner cylinder 1 can be cooled, improving the cooling effect of the inner cylinder 1. In addition, in order to increase the contact area between the cooling water pipe 4 and the outer wall of the inner cylinder 1, the cross-section of the cooling water pipe 4 is set to an arc shape that fits the outer side wall of the inner cylinder 1, which can further improve the heat dissipation effect of the inner cylinder 1.

[0064] In one embodiment, in the cooling cavity 32 in the cooling ring cavity 31 at the bottom, the corresponding several water outlets 34 are all connected to the water outlet main pipe 6, and the water inlet main pipe 41 is arranged in the water outlet main pipe 6. After the cooling water cools the outer wall of the inner tank 1 in the cooling cavity 3, it flows out from the water outlet main pipe 6; at the same time, the water inlet main pipe 41 is arranged in the water outlet main pipe 6, which can make the overall water pipe layout more compact. In addition, a thermal insulation layer is arranged on the outer wall of the water inlet main pipe 41 to prevent the heat in the water outlet main pipe 6 from being transferred to the position of the water inlet main pipe 41; and in order to further prevent the heat in the cooling water pipe 4 from being dissipated into the cooling cavity 32, except for the contact surface between the cooling water pipe 4 and the outer wall of the inner tank 1, a thermal insulation layer can be arranged on the remaining surfaces to prevent the cooling water in the cooling water pipe 4 from exchanging heat with the cooling water in the cooling cavity 32.

[0065] In one embodiment, in order to facilitate maintenance and installation of the water outlet main pipe 6, a mounting pipe 61 is provided at the bottom of the housing 2, and the water outlets 34 on the cooling small chambers 32 in the bottom cooling ring chamber 31 are all connected to the mounting pipe 61. That is, the water outlets 34 on the cooling small chambers 32 in the bottom cooling ring chamber 31 are collectively connected to the mounting pipe 61, and a water outlet flange 62 is provided at the mounting pipe 61. The water outlet main pipe 6 is connected to the mounting pipe 61 through the water outlet flange 62, which facilitates the installation of the water outlet main pipe 6.

[0066] In one embodiment, a sealing assembly is provided at the opening of the cooling chamber 3 to close the opening, and the sealing assembly includes an outer shell flange 21 and an inner liner flange 11 provided at the opening of the cooling chamber 3, the outer shell flange 21 is fixedly connected to the outer shell 2, the inner liner flange 11 is fixedly connected to the inner liner 1, and the inner liner flange 11 is adapted to the outer shell flange 21. A sealing ring 111 is provided between the inner liner flange 11 and the outer shell flange 21 to increase the sealing performance of the two. The provision of the sealing assembly can facilitate the cleaning of the cooling chamber 3.

[0067] In order to describe more cleaning, when the ball mill is tilted, the axis of the ball mill can be translated in the horizontal direction to form an axis plane 7. The axis plane 7 forms an angle with the horizontal plane, which is the tilt angle C of the ball mill. With the axis plane 7 as the dividing plane, the part above the axis plane 7 is the upper half, and the part below the axis plane 7 is the lower half. In addition, the axis of the ball mill is translated in the vertical direction to form a vertical plane 71. The intersection of the vertical plane 71 and the upper and lower ends of the cooling ring cavity 31 are the upper endpoint 711 and the lower endpoint 712, respectively.

[0068] In this application, the ball milling cylinder is placed obliquely during use. After the cooling water is split from the total water inlet pipe 41, it flows to several cooling water pipes 4. Then, the cooling water flows out from the water outlet end at the top of the cooling water pipe 4, and the flowing-out cooling water falls into the cooling small cavity 32 within the cooling ring cavity 31 at the topmost part of the cooling cavity 3. Due to the factor of gravity, the cooling water flowing out from the cooling water pipes 4 in the lower half will not fall on the outer wall of the inner cylinder 1. However, due to the factor of gravity, the cooling water flowing out from the cooling water pipes 4 in the upper half will fall on the outer wall of the inner cylinder 1, providing a good cooling effect on the outer wall of the inner cylinder 1.

[0069] When the cooling small cavity 32 moves from the lower end point 712 towards the upper end point 711, the water in the cooling small cavity 32 will remain in the cooling small cavity 32. When the cooling water remains in the cooling small cavity 32, it can also cool the outer wall of the inner cylinder 1. When the cooling small cavity 32 moves from the upper end point 711 towards the lower end point 712, the water in the cooling small cavity 32 will flow along the outer wall of the inner cylinder 1, thereby cooling the outer wall of the inner cylinder 1. During this process, the cooling water flows out from the water outlet 34 and flows into the cooling small cavity 32 of the next adjacent cooling ring cavity 31, repeating the above steps to cool the outer wall of the inner cylinder 1.

[0070] That is to say, during the process of the cooling small cavity 32 moving from the lower end point 712 to the upper end point 711, the cooling small cavity 32 is equivalent to "scooping water", and during the process of the cooling small cavity 32 moving from the upper end point 711 to the lower end point 712, the cooling small cavity 32 is equivalent to "pouring water" on the outer side wall of the inner cylinder 1 to cool the outer surface of the inner cylinder 1. Therefore, in order to increase the amount of "scooping water", the water outlet 34 is arranged at one end of the cooling small cavity 32. When the cooling small cavity 32 moves from the lower end point 712 to the upper end point 711, the water outlet 34 is located at the upper end position of the cooling small cavity 32. For example, when the ball milling cylinder rotates clockwise (as Figure 3 shown), at this time, the water outlet 34 of the cooling small cavity 32 in the left half is at the upper end, and when the ball milling cylinder rotates counterclockwise (as Figure 4 shown), at this time, the water outlet 34 of the cooling small cavity 32 in the right half is at the upper end, ensuring the amount of "scooping water".

[0071] This embodiment is similar in structure to that in Embodiment 2. Referring to Figure 5 and Figure 6 shown, the difference is that in order to further increase the amount of scooping water, in this embodiment, a rotary valve plate 8 is arranged at the position of the water outlet 34, so that the water outlet 34 is always in the upper position, thereby increasing the water storage capacity in the cooling small cavity 32.

[0072] Specifically, the rotary valve plate 8 is fan-shaped, and an arc groove 81 is provided on the arc edge of the rotary valve plate 8. The arc groove 81 cooperates with the transverse water baffle 5 at the water outlet 34, so that the rotary valve plate 8 can slide on the inner wall of the water outlet 34. Therefore, under the action of gravity, the rotary valve plate 8 can always be located in the lower half of the water outlet 34, while the upper half of the water outlet 34 is in an open state, so that the water storage capacity of the cooling chamber 32 can be increased, and sufficient water can be poured onto the outer wall of the inner tank 1.

[0073] In one embodiment, in order to reduce the friction between the arc groove 81 and the transverse water baffle 5, balls are provided on both sides of the arc groove 81, and the balls on both sides of the arc groove 81 are respectively located on both sides of the water outlet 34.

[0074] In addition, in order to ensure that the rotary valve plate 8 can smoothly be located in the lower half of the water outlet 34, a weight bump 82 is provided on the rotary valve plate 8, so that the rotary valve plate 8 is more likely to stay in the lower half of the water outlet 34.

[0075] Therefore, in this application, it is not necessary to fill the cooling chamber 3 with cooling water to cool the outer wall of the inner tank 1, and during the cooling process, the action of pouring cooling water onto the outer wall of the inner tank 1 is simulated, so that the outer wall of the inner tank 1 is fully cooled, reducing problems such as a large amount of heat generated by the collision and friction of alloy balls, resulting in an increase in the temperature of the ball milling medium, an increase in the oxygen content of the powder, and other risks or impacts.

[0076] Embodiment 4: As Figures 1 to 6 shown, a horizontal ball mill includes the ball milling cylinder described in any one of Embodiments 1 to 3, and further includes a frame 9, and the ball milling cylinder is inclined and arranged on the frame 9; an upper cover 12 cooperating with the inner tank 1 is provided at the opening of the inner tank 1.

[0077] Alloy balls, metal powder, and ball milling medium are loaded into the inner tank 1, the upper cover 12 is covered and sealed and locked, and the ball milling cylinder is placed on the frame 9 and rotated.

[0078] The above-described embodiments are only preferred solutions of the present invention, and do not impose any form of limitation on the present invention. There are other variations and modifications without exceeding the technical solutions recorded in the claims.

Claims

1. A ball milling cylinder, characterized in that, Comprising: An inner tank and an outer shell, the outer shell is sleeved around the periphery of the inner tank, and the outer shell and the inner tank cooperate to form a cooling cavity; A number of cooling water pipes are evenly distributed on the outer side wall of the inner tank, and a number of cooling water pipes are communicated with the water inlet main pipe; A number of cooling ring cavities are arranged along the axis direction of the inner tank in the cooling cavity, and a number of cooling small cavities are arranged in the cooling ring cavities; at least one water outlet hole is arranged on each cooling small cavity, and the water outlet hole communicates the adjacent cooling ring cavities; After the water outlet ends of a number of cooling water pipes pass through a number of cooling ring cavities, they are located in the topmost cooling ring cavity; a water outlet is arranged on the side wall of the bottommost cooling ring cavity.

2. The ball milling cylinder according to claim 1, characterized in that, The cooling water pipes are attached to the outer side wall of the inner tank.

3. The ball milling cylinder according to claim 1, characterized in that, The number of cooling small cavities arranged in each cooling ring cavity is the same, and at least one cooling water pipe is correspondingly arranged in each cooling small cavity.

4. The ball milling cylinder according to any one of claims 1 to 3, characterized in that, The cross section of the cooling water pipe is set to an arc shape that fits the outer side wall of the inner tank.

5. The ball milling cylinder according to any one of claims 1 to 3, characterized in that, In the cooling small cavity in the bottommost cooling ring cavity, a number of corresponding water outlets are communicated with a water outlet pipe, and the water inlet main pipe is arranged inside the water outlet main pipe.

6. The ball milling cylinder according to claim 5, characterized in that, A heat insulation layer is arranged on the outer side wall of the water inlet main pipe.

7. The ball milling cylinder according to claim 5, characterized in that, The water outlet main pipe and a number of water outlets are connected by a water outlet flange.

8. The ball milling cylinder according to claim 1, characterized in that, A sealing component for closing the opening is arranged at the opening of the cooling cavity, and the sealing component includes a shell flange and an inner tank flange arranged at the opening of the cooling cavity, and the inner tank flange is adapted to the shell flange.

9. The ball milling cylinder according to claim 1 or 2 or 3 or 8, characterized in that, 6 to 12 cooling small cavities are arranged in each cooling ring cavity.

10. A horizontal ball grinding machine, characterized in that, Comprising the ball mill cylinder according to any one of claims 1 to 9, further comprising a frame, and the ball mill cylinder is inclined and arranged on the frame.

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