Ball mill with uniform stress

Abstract

The utility model relates to the field of crushing devices, and particularly discloses a ball mill with uniform stress, which comprises a base, a rotating shaft seat and a barrel, the barrel is driven to rotate, a pair of auxiliary rollers is arranged between the base and the barrel, and the auxiliary rollers are driven by a spring to extrude and press and then approach to and abut against the barrel. According to the scheme, a flexible bearing mode is adopted to share part of pressure of the barrel, the auxiliary roller provides balance through the spring, the contact face of the barrel and the auxiliary roller is located on the side lower portion, part of small pressure is decomposed in the horizontal direction and counteracted by the elastic force of the spring, and part of large pressure is decomposed in the vertical direction and counteracted by the guide groove. The positions and the supporting force of the auxiliary rollers can be adjusted in real time by changing the elastic force of the springs, and the two auxiliary rollers can adapt to barrels with different diameters; and the rotating shaft can also be matched with the rotating shaft, over-positioning does not exist, and finally, the barrel is uniformly supported.

Description

Technical Field

[0001] The utility model belongs to the field of pulverizing devices, in particular to a ball mill with uniform force. Background Art

[0002] After the material is crushed, it generally needs to be further pulverized, and one of the devices used is a ball mill. During the operation of the ball mill, the steel balls and materials inside are subjected to the effects of centrifugal force and friction. When the cylinder reaches a certain height, the steel balls break away from the inner wall of the ball mill cylinder and are thrown or fall inward. The steel balls at a high height have a lot of potential energy. The thrown steel balls impact the materials, and the falling steel balls grind the materials. The combination of the two achieves a grinding effect.

[0003] Existing ball mills usually have rotating shafts and brackets at both ends of the cylinder, and a circle of racks and their drive motors on the side of the cylinder. If the cylinder is long, the middle section of the cylinder is prone to bending and deformation. In order to solve the problem of the long cylinder, auxiliary rollers are set at the bottom of the cylinder. However, the existing auxiliary rollers are all fixed structures, which makes the base unable to adapt to ball mills of different sizes and has a narrow scope of application. Moreover, after adding auxiliary rollers, more than three positioning points are prone to over-positioning. The relevant structure has extremely high requirements for installation accuracy, and simple installation will destroy the original balance of the cylinder. Utility Model Content

[0004] The utility model aims to provide a ball mill with uniform force without over-positioning.

[0005] To achieve the above-mentioned purpose, the utility model provides a ball mill with uniform force, comprising a base, a pair of rotating shaft seats installed on the base and a cylinder installed between the two rotating shaft seats, a circle of racks is arranged on the outer side of the cylinder, the base is provided with a driving motor for driving the cylinder to rotate, a pair of auxiliary rollers is arranged on the base below the middle section of the cylinder, the two auxiliary rollers are used to support the cylinder, the base is provided with a pair of guide grooves and a slide seat that can slide under the restriction of the guide grooves, the bottom of the slide seat is slidably connected to the guide grooves, the rollers are installed on the slide seat, a spring is arranged between the guide grooves and the slide seat, and under the drive of the spring, the two rollers move toward the lowest point of the cylinder.

[0006] As an improvement of the above solution, a push rod and a screw rod are provided in the guide groove, one end of the screw rod is drilled out of the end surface of the guide groove in a threaded connection manner, and the other end of the screw rod is against the spring. After the screw rod is rotated, the screw rod moves to adjust the tension of the spring.

[0007] As an improvement of the above scheme, a cover plate is arranged above the guide groove, a long notch is arranged in the middle of the cover plate in the same direction as the guide groove, and a groove is arranged on the side of the slide seat to facilitate the embedding of the edge of the long notch, so that the cover plate can clamp and guide the middle height side of the slide seat.

[0008] As an improvement of the above solution, the end of the screw rod extending out of the guide groove is configured as a prism or a pin hole or a cross groove.

[0009] As an improvement of the above solution, there are two supporting points between the two rollers and the cylinder, and the central angle corresponding to the arc between the two supporting points is less than 50°.

[0010] As an improvement of the above-mentioned scheme, the discharge port of the cylinder is arranged at the top of the side of the cylinder, and a first lifting mechanism and a second lifting mechanism are respectively arranged in the front and rear directions below the base. The first lifting mechanism and the second lifting mechanism respectively lift the front and rear ends of the base. When the cylinder is tilted, the discharge port is located at the lowest point to facilitate discharge.

[0011] As an improvement of the above solution, the base is sunken below the discharge port to increase the height difference between the discharge port and the base.

[0012] The utility model has the following beneficial effects: the scheme adopts a flexible support method to share part of the pressure of the cylinder, the auxiliary roller provides balance through the spring, the contact surface between the cylinder and the auxiliary roller is located at the lower side, a part of the smaller pressure is decomposed in the horizontal direction and offset by the elastic force of the spring, and a part of the larger pressure is decomposed in the vertical direction and offset by the guide groove. By changing the elastic force of the spring, the position and support force of the auxiliary roller can be adjusted in real time. The two auxiliary rollers can adapt to cylinders of different diameters; they can also cooperate with the rotating shaft, there is no over-positioning, and finally the cylinder is evenly supported. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a front view of a ball mill under an embodiment;

[0014] Figure 2 1 is a cross-sectional view of a ball mill according to an embodiment of the present invention.

[0015] Explanation of the reference numerals: 11. base; 12. rotating shaft seat; 13. cylinder; 14. rack; 15. driving motor; 21. feed port; 22. discharge port; 31. guide groove; 32. slide seat; 33. cover plate; 41. auxiliary roller; 42. spring; 43. screw; 51. first lifting mechanism; 52. second lifting mechanism. DETAILED DESCRIPTION

[0016] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "top", "bottom", "top surface", "bottom surface", "inside", "outside", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0017] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If the terms "first", "second", "third" are described, they are only used for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is a description of the embodiments of the present invention based on its overall structure.

[0019] Reference Figure 1 and Figure 2 The utility model discloses a ball mill with uniform force, comprising a base 11, a pair of rotating shaft seats 12 installed on the base 11, and a cylinder 13 installed between the two rotating shaft seats 12, a circle of racks 14 is arranged on the outer side of the cylinder 13, and the base 11 is provided with a driving motor 15 for driving the cylinder 13 to rotate. The rotating shaft seat 12 is divided into two parts, the upper and lower parts are connected by bolts, and the upper and lower parts clamp the ends of the cylinder 13.

[0020] The base 11 is provided with a pair of auxiliary rollers 41 at a position below the middle section of the cylinder 13. The two auxiliary rollers 41 are used to support the cylinder 13. The base 11 is provided with a pair of guide grooves 31 and a slide seat 32 that can slide under the restriction of the guide grooves 31. The bottom of the slide seat 32 is slidably connected to the guide grooves 31. The rollers are installed on the slide seat 32. A spring 42 is provided between the guide grooves 31 and the slide seat 32. Driven by the spring 42, the two rollers move toward the lowest point of the cylinder 13.

[0021] The scheme adopts a flexible support method to share part of the pressure of the cylinder 13. The auxiliary roller 41 provides balance through the spring 42. The contact surface between the cylinder 13 and the auxiliary roller 41 is located at the lower side. A part of the smaller pressure is decomposed in the horizontal direction and offset by the elastic force of the spring 42, and a part of the larger pressure is decomposed in the vertical direction and offset by the guide groove 31. By changing the elastic force of the spring 42, the position and support force of the auxiliary roller 41 can be adjusted in real time. The two auxiliary rollers 41 can adapt to cylinders 13 of different diameters; they can also cooperate with the rotating shaft, without over-positioning, and finally support the cylinder 13 evenly.

[0022] As an improvement of the above solution, the cylinder 13 is provided with an annular groove at the position supported by the auxiliary roller 41 so that a part of the edge of the auxiliary roller 41 can be embedded and the auxiliary roller 41 is not easily deviated.

[0023] As an improvement of the above solution, a push rod and a screw 43 are provided in the guide groove 31, one end of the screw 43 is drilled out of the end surface of the guide groove 31 in a threaded connection manner, and the other end of the screw 43 abuts against the spring 42. After the screw 43 is rotated, the screw 43 moves to adjust the tension of the spring 42. Figure 2 As shown, the screw rod 43 is provided with a larger contact surface at the end that contacts the spring 42 so as to fully support the spring 42 .

[0024] As an improvement of the above scheme, a cover plate 33 is provided above the guide groove 31, a long notch in the same direction as the guide groove 31 is provided in the middle of the cover plate 33, and a groove is provided on the side of the slide 32 for the edge of the long notch to be embedded, so that the cover plate 33 can clamp and guide the middle height side of the slide 32. It can be understood that the middle of the slide 32 is narrow and the upper and lower ends are thick. With the above scheme, the bottom of the slide 32 has both a limit guide point and a limit guide point in the middle. The two positioning points work together to help the slide 32 maintain balance.

[0025] As an improvement of the above solution, the end of the screw rod 43 extending out of the guide groove 31 is configured as a prism or a pin hole or a cross groove.

[0026] As an improvement of the above solution, there are two supporting points between the two rollers and the cylinder 13, and the central angle of the arc between the two supporting points is less than 50°. By adopting the above solution, the tangent angle of the contact point between the auxiliary roller 41 and the cylinder 13 is limited, so as to avoid the cylinder 13 from applying too much horizontal pressure and avoid the structural failure of the spring 42.

[0027] As an improvement of the above scheme, the discharge port 22 of the cylinder 13 is arranged at the top of the side of the cylinder 13, and the first lifting mechanism 51 and the second lifting mechanism 52 are respectively arranged in the front and rear directions below the base 11. The first lifting mechanism 51 and the second lifting mechanism 52 respectively lift the front and rear ends of the base 11. When the cylinder 13 is tilted, the discharge port 22 is located at the lowest point to facilitate discharge.

[0028] As an improvement of the above solution, the base 11 is sunken below the discharge port 22 to increase the height difference between the discharge port 22 and the base 11. The wider space there is convenient for placing the collecting tool.

[0029] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A ball mill with uniform force, comprising a base, a pair of rotating shaft seats mounted on the base, and a cylinder installed between the two rotating shaft seats, a circle of racks is arranged on the outer side of the cylinder, and the base is provided with a driving motor for driving the cylinder to rotate, characterized in that: The base is provided with a pair of auxiliary rollers at a position below the middle section of the cylinder, and the two auxiliary rollers are used to support the cylinder. The base is provided with a pair of guide grooves and a slide seat that can slide under the restriction of the guide grooves. The bottom of the slide seat is slidably connected to the guide grooves, and the rollers are installed on the slide seat. A spring is provided between the guide groove and the slide seat. Driven by the spring, the two rollers move toward the lowest point of the cylinder.

2. The ball mill with uniform force according to claim 1, characterized in that: A push rod and a screw rod are arranged in the guide groove, one end of the screw rod is drilled out of the end surface of the guide groove in a threaded connection manner, and the other end of the screw rod abuts against the spring. After the screw rod is rotated, the screw rod moves to adjust the tension of the spring.

3. The ball mill with uniform force according to claim 2, characterized in that: A cover plate is arranged above the guide groove, a long notch in the middle of the cover plate is arranged in the same direction as the guide groove, and a groove for facilitating the embedding of the edge of the long notch is arranged on the side of the slide seat, so that the cover plate can clamp and guide the middle height side of the slide seat.

4. The ball mill with uniform force according to claim 3, characterized in that: The end of the screw rod extending out of the guide groove is configured as a prism or a pin hole or a cross groove.

5. The ball mill with uniform force according to claim 1, characterized in that: There are two supporting points between the two rollers and the cylinder, and the central angle of the arc between the two supporting points is less than 50°.

6. The ball mill with uniform force according to claim 1, characterized in that: The discharge port of the cylinder is arranged at the top of the side of the cylinder, and a first lifting mechanism and a second lifting mechanism are respectively arranged in the front and rear directions below the base. The first lifting mechanism and the second lifting mechanism respectively lift the front and rear ends of the base. When the cylinder is tilted, the discharge port is located at the lowest point for easy discharge.

7. The ball mill with uniform force according to claim 6, characterized in that: The base is sunken below the discharge port to increase the height difference between the discharge port and the base.

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