Ball mill for preparing phase change material

Abstract

The utility model relates to the technical field of phase-change material preparation equipment, in particular to a ball mill for preparing a phase-change material. According to the technical scheme, the coarse grinding device comprises a cylinder body and an inlet and outlet, lining plates used for installing the inlet and outlet are arranged at the two ends of the cylinder body, a bin dividing partition plate for dividing a first bin and a second bin is arranged in the middle section in the cylinder body, and the coarse grinding device further comprises a first extrusion plate which is slidably connected into the first bin and can push coarse grinding media to be vertically stacked through horizontal sliding. By means of the design that the first extrusion plate and the second extrusion plate which can slide horizontally are arranged in the first bin and the second bin respectively, coarse grinding media or fine grinding media can be pushed and extruded to be stacked vertically so as to be prevented from rising and throwing down when rotating along with the barrel, and damage to a barrel lining is reduced; and through the design of the protection shaft barrel, the first extrusion plate and the second extrusion plate can be connected for synchronous translation, and the guide polished rod and the threaded shaft can be externally protected and prevented from being damaged during grinding.

Description

Technical Field

[0001] The utility model relates to the technical field of phase change material preparation equipment, in particular to a ball mill for preparing phase change materials. Background Art

[0002] The preparation of phase change materials involves grinding of materials, such as the preparation of crystalline hydrated salts and paraffin powder, which can usually be achieved using a ball mill. The ball mill consists of a rotatable horizontal cylinder, an inlet and outlet, and an inner lining located on the inner wall of the cylinder. The cylinder is filled with grinding media. When the cylinder of the ball mill rotates, the grinding media rises with the rotation of the cylinder due to inertia, centrifugal force, and friction, and then is thrown down from a high place, and the impact force generated crushes the material.

[0003] In the existing ball mill, a partition plate can be set in the middle of the cylinder to divide the cylinder into two grinding chambers, and grinding media of different particle sizes are placed in the two grinding chambers to achieve coarse grinding and fine grinding effects respectively. The material first enters the first chamber for coarse grinding, and the second chamber is empty at this time, but the grinding media in it will still rise and fall with the rotation of the cylinder, and due to the lack of material blocking and deceleration, it will have a greater impact on the lining of the cylinder, resulting in a shortened service life of the lining. For this reason, the utility model proposes a ball mill for preparing phase change materials. Utility Model Content

[0004] The utility model aims to solve the problem in the background technology that when the bin body is in an empty state, the grinding media is lifted up and thrown down with the rotation of the cylinder body. Due to the lack of material blocking and deceleration, a large impact is generated on the lining of the cylinder body, resulting in a shortened service life of the lining. A ball mill for preparing phase change materials is proposed.

[0005] The technical solution of the utility model is as follows: a ball mill for preparing phase change materials comprises a cylinder and an inlet and an outlet. Both ends of the cylinder are provided with lining plates for installing the inlet and the outlet. The inner middle section of the cylinder is provided with a partition plate for separating a first bin and a second bin, comprising: a first extrusion plate slidably connected in the first bin and capable of pushing coarse grinding media to vertical stacking through horizontal sliding; a second extrusion plate slidably connected in the second bin and capable of pushing fine grinding media to vertical stacking through horizontal sliding.

[0006] Optionally, it also includes at least one guide light rod fixed between the two lining plates, and the guide light rod movably passes through the first extrusion plate and the second extrusion plate.

[0007] Optionally, it also includes a threaded shaft rotatably connected between the two lining plates and threadedly engaged with the second extrusion plate, and a motor fixed to the outer wall of the inlet and outlet and with the output shaft coaxially fixedly connected to the threaded shaft.

[0008] Optionally, a protective shaft cylinder is also included, and two ends of the protective shaft cylinder are respectively fixedly connected to the first extrusion plate and the second extrusion plate.

[0009] Optionally, the protective shaft cylinder movably passes through the compartment partition.

[0010] Optionally, the first extrusion plate is provided with coarse filter holes for large particle materials to pass through, and the second extrusion plate is provided with fine filter holes for small particle materials to pass through.

[0011] Optionally, the compartment partition is provided with partition fine filter holes for small particle materials to pass through.

[0012] Compared with the prior art, the utility model has the following beneficial technical effects:

[0013] The utility model is designed to respectively arrange the first extrusion plate and the second extrusion plate which can slide horizontally in the first bin and the second bin, so that the coarse grinding medium or the fine grinding medium can be pushed to be stacked vertically, so as to avoid being thrown up and dropped when following the rotation of the cylinder, thereby reducing the damage to the cylinder lining;

[0014] Furthermore, through the design of the protective shaft cylinder, not only can the first extrusion plate and the second extrusion plate be connected to allow for synchronous translation, but the guide light rod and the threaded shaft can also be externally protected to prevent damage during grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of a ball mill for preparing phase change materials;

[0016] Figure 2 for Figure 1 A cross-sectional view of the middle cylinder;

[0017] Figure 3 It is a schematic diagram when the first extrusion plate and the second extrusion plate move to the left;

[0018] Figure 4 It is a schematic diagram when the first extrusion plate and the second extrusion plate move to the right.

[0019] Reference numerals: 1, cylinder; 11, lining plate; 12, compartment partition plate; 121, partition plate fine filter hole; 1a, first compartment; 1aa, coarse grinding medium; 1b, second compartment; 1bb, fine grinding medium;

[0020] 2. Import and export;

[0021] 3. First extrusion plate; 31. Coarse filter hole;

[0022] 4. Second extrusion plate; 41. Fine filter hole;

[0023] 5. Guide light rod;

[0024] 6. Threaded shaft;

[0025] 7. Motor;

[0026] 8. Protect the shaft cylinder. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 an indirect connection through an intermediate medium, or it can be the internal communication 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.

[0030] like Figure 1-4 As shown, the ball mill for preparing phase change materials proposed in the utility model includes a cylinder 1, and lining plates 11 are fixedly connected at both ends of the cylinder 1. The lining plates 11 are fixedly connected to the inlet and outlet 2 through a flange structure, and a blower is installed at the inlet and outlet 2 to realize material loading and unloading. And a large gear is arranged at the connection between the lining plate 11 and the inlet and outlet 2, and the rotation of the cylinder 1 is realized through gear meshing with an external motor. In addition, a partition partition 12 is connected to the bottom of the valley of the inner middle section of the cylinder 1, and the partition partition 12 divides the internal space of the cylinder 1 into a first bin 1a and a second bin 1b. The inner walls of the first bin 1a and the second bin 1b are both provided with an inner lining, and the partition partition 12 is provided with a partition fine filter hole 121 for the coarsely ground material to pass through. The above is the existing structure of the existing ball mill, which will not be repeated here.

[0031] In this embodiment, three guide light rods 5 are fixedly connected between the two lining plates 11 in a circular array. The guide light rods 5 movably penetrate the first extrusion plate 3 and the second extrusion plate 4, that is, the first extrusion plate 3 can slide along the guide light rods 5 in the first bin 1a, and the second extrusion plate 4 can slide along the guide light rods 5 in the second bin 1b.

[0032] Furthermore, a threaded shaft 6 is rotatably connected between the two lining plates 11. The threaded shaft 6 can be provided with a half-section thread that is only screwed together with the second extrusion plate 4. The motor 7 is fixedly connected to the flange connected to the inlet and outlet 2. The end of the threaded shaft 6 movably passes through the lining plate 11 and the flange of the inlet and outlet 2 and is coaxially fixedly connected to the output shaft of the motor 7. That is, when the output shaft of the motor 7 rotates, the threaded shaft 6 can be driven to rotate. The threaded shaft 6 drives the second extrusion plate 4 to translate by screwing together with the second extrusion plate 4.

[0033] Furthermore, the two ends of the protective shaft cylinder 8 are respectively fixedly connected to the first extrusion plate 3 and the second extrusion plate 4, and the protective shaft cylinder 8 movably penetrates the compartment partition 12. That is, when the second extrusion plate 4 moves horizontally, it will drive the first extrusion plate 3 to move horizontally through the protective shaft cylinder 8. And the protective shaft cylinder 8 can be used to protect the guide light rod 5 and the threaded shaft 6 from collision.

[0034] In this embodiment, the first extrusion plate 3 is provided with a coarse filter hole 31 for large particles to pass through, so that the materials can enter the first bin 1a for coarse grinding. The second extrusion plate 4 is provided with a fine filter hole 41 for small particles to pass through, so that the coarsely ground materials can enter the second bin 1b for fine grinding.

[0035] The working principle of this embodiment is as follows: the material enters the cylinder 1 through one of the inlets and outlets 2 and first enters the first bin 1a. Figure 3 As shown, the coarse grinding media 1aa in the first bin 1a are piled up at a low position, and the fine grinding media 1bb in the second bin 1b are squeezed to a high position by the second squeezing plate 4 that is shifted to the left. When the cylinder body 1 rotates, the coarse grinding media 1aa at a low position can rise up to a large extent with the rotation, and then be thrown down to crush the material in the first bin 1a, and at this time, most of the protective shaft cylinder 8 is located in the first bin 1a to protect the guide light rod 5 and the threaded shaft 6 therein to prevent the coarse grinding media 1aa from damaging the guide light rod 5 and the threaded shaft 6 when they are thrown down. In addition, at this time, the fine grinding media 1bb in the second bin 1b cannot form a large fall due to the limited upward space, so the collision damage to the lining of the second bin 1b is relatively small;

[0036] After the material is roughly ground in the first bin 1a, the motor 7 is started, and its output shaft drives the threaded shaft 6 to rotate, thereby causing the second extrusion plate 4 to move rightward, and the second extrusion plate 4 drives the first extrusion plate 3 to move rightward together through the protective shaft cylinder 8. Figure 4As shown, at this time, the fine grinding media 1bb in the second bin 1b are stacked at high and low positions, and the coarse grinding media 1aa in the first bin 1a are squeezed to a high position by the first squeezing plate 3 that moves to the right. The coarsely ground materials in the first bin 1a are sent to the second bin 1b by a blower. When the cylinder 1 rotates, the low-position fine grinding media 1bb can rise in a large range with the rotation, and then fall down to smash the materials in the second bin 1b. At this time, most of the protective shaft cylinder 8 is located in the second bin 1b to protect the guide light rod 5 and the threaded shaft 6 therein to prevent the fine grinding media 1bb from damaging the guide light rod 5 and the threaded shaft 6 when falling. In addition, at this time, the coarse grinding media 1aa in the first bin 1a cannot form a large fall due to the limited upward space, so the collision damage to the lining of the first bin 1a is relatively small.

[0037] In summary, by respectively arranging the first extrusion plate 3 and the second extrusion plate 4 which can slide horizontally in the first bin 1a and the second bin 1b, the coarse grinding medium 1aa or the fine grinding medium 1bb can be pushed to vertically stack, so as to avoid being thrown upward and falling when following the rotation of the cylinder 1, thereby reducing the damage to the lining of the cylinder 1; through the design of the protective shaft tube 8, not only the first extrusion plate 3 and the second extrusion plate 4 can be connected for synchronous translation, but also the guide light rod 5 and the threaded shaft 6 can be externally protected to prevent damage during grinding.

[0038] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A ball mill for preparing phase change materials, comprising a cylinder (1) and an inlet and outlet (2), wherein lining plates (11) for installing the inlet and outlet (2) are arranged at both ends of the cylinder (1), and a partition plate (12) for separating a first chamber (1a) and a second chamber (1b) is arranged in the middle section of the cylinder (1), wherein: Also includes: A first extrusion plate (3) which is slidably connected in the first bin (1a) and can push the coarse grinding media (1aa) to the vertically stacked first extrusion plate (3) through horizontal sliding; The second extrusion plate (4) is slidably connected in the second bin (1b) and can push the fine grinding media (1bb) to the vertically stacked second extrusion plate (4) through horizontal sliding.

2. The ball mill for preparing phase change material according to claim 1, characterized in that: It also comprises at least one light guide rod (5) fixed between the two lining plates (11), wherein the light guide rod (5) movably penetrates the first extrusion plate (3) and the second extrusion plate (4).

3. The ball mill for preparing phase change material according to claim 2, characterized in that: It also includes a threaded shaft (6) rotatably connected between the two lining plates (11) and threadedly engaged with the second extrusion plate (4), and a motor (7) fixed to the outer wall of the inlet and outlet (2) and with the output shaft coaxially fixedly connected to the threaded shaft (6).

4. The ball mill for preparing phase change material according to claim 3, characterized in that: It also comprises a protective shaft cylinder (8), the two ends of which are respectively fixedly connected to the first extrusion plate (3) and the second extrusion plate (4).

5. The ball mill for preparing phase change material according to claim 4, characterized in that: The protective shaft cylinder (8) movably penetrates the compartment partition plate (12).

6. The ball mill for preparing phase change material according to claim 5, characterized in that: The first extrusion plate (3) is provided with coarse filter holes (31) for large particle materials to pass through, and the second extrusion plate (4) is provided with fine filter holes (41) for small particle materials to pass through.

7. The ball mill for preparing phase change material according to claim 6, characterized in that: The compartment partition (12) is provided with partition fine filter holes (121) for small particle materials to pass through.

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