Ultralow-temperature material bead self-separation type basket mill

Abstract

The invention relates to an ultralow-temperature material bead self-separation type basket mill which comprises an outer-layer lower shell and an outer-layer upper shell installed on the top of the outer-layer lower shell, a grinding barrel is arranged in the outer-layer lower shell, a grinding basket is installed in the grinding barrel, a screening structure is installed at the bottom end of the grinding basket, and the outer-layer upper shell is installed on the top of the outer-layer lower shell. The center of the screening structure is rotationally connected with a main shaft, before grinding, a liquid nitrogen tank is connected through a quick-assembly connector to form a liquid nitrogen cooling system, accurate regulation and control of an ultralow-temperature environment are achieved, the machining requirement of heat-sensitive materials is met, and meanwhile an inert gas environment formed by liquid nitrogen vaporization effectively prevents material oxidation; through innovative structural design, accurate temperature control, a reliable sealing system and an intelligent operation mode, the technical limitation of traditional grinding equipment in the field of precision machining is effectively solved, and the device is particularly suitable for production of high-added-value materials with strict requirements for the machining environment; and the method has remarkable technical advancement and wide market application prospect.

Description

Technical Field

[0001] The present invention belongs to the technical field of basket grinders, and particularly relates to an ultra-low temperature bead self-separating basket mill. Background Art

[0002] A basket mill, also known as a basket-type grinder, is a device used for grinding materials. The working principle of this device is to suck materials at high speed through a self-priming impeller. The materials enter the grinding basket and are ground by the cooperation of a stirring rotor and grinding balls. Finally, the ground materials that meet the standard are discharged through a sieve, thus forming an efficient cycle of material suction, grinding, and discharging, solving the problem of material turnover, avoiding circulation dead corners, and obtaining excellent grinding effects in a short time.

[0003] Traditional basket mills can only provide a normal temperature grinding environment and cannot achieve precise temperature control, resulting in the easy denaturation or decomposition of heat-sensitive materials during the grinding process. The grinding and drying processes are separated, and materials need to be transferred multiple times, which not only reduces efficiency but also increases the risk of pollution. Moreover, the cooling system uses a conventional water-cooling method, with a slow cooling rate and large temperature fluctuations, unable to meet the process requirements of ultra-fine grinding. Summary of the Invention

[0004] The purpose of the present invention is to provide a simple-structured and reasonably designed ultra-low temperature bead self-separating basket mill to solve the above problems.

[0005] The present invention achieves the above purpose through the following technical solutions:

[0006] An ultra-low temperature bead self-separating basket mill includes an outer lower housing and an outer upper housing installed on the top of the outer lower housing. A grinding cylinder is arranged inside the outer lower housing, and a grinding basket body is installed inside the grinding cylinder. A screening structure is installed at the bottom end of the grinding basket body, and a main shaft is rotatably connected to the center of the screening structure. The bottom end of the main shaft extends below the screening structure and is connected with a dispersion device. The top of the main shaft extends upward into the outer upper housing. A boss retaining ring is fixedly sleeved at the position of the main shaft at the top end of the grinding cylinder. A driving structure for driving the main shaft to rotate is installed on the top of the outer upper housing, and a quick-connect interface is installed on the outer wall of one side of the outer upper housing.

[0007] As a further optimized solution of the present invention, a feed inlet is provided on the grinding basket body installed inside the grinding cylinder, and the feed inlet is designed in a conical shape.

[0008] As a further optimized solution of the present invention, the screening structure includes a connecting plate arranged at the bottom of the grinding basket body, and a slotted screen in a ring structure is installed on the connecting plate. The mesh holes of the slotted screen are in a wedge shape.

[0009] As a further optimization solution of the present invention, a plurality of annularly distributed mounting holes are provided on the periphery of the connecting plate. The connecting plate is fixed to the bottom of the grinding basket body through external bolts cooperating with the mounting holes, and a through hole for the main shaft to pass through is also provided at the center of the connecting plate.

[0010] As a further optimization solution of the present invention, grinding balls are arranged in the grinding basket body, and a stirring rotor is fixedly installed on a section of the main shaft located in the inner cavity of the grinding basket body.

[0011] As a further optimization solution of the present invention, the dispersing device is a turntable installed at one end of the main shaft below the connecting plate. A plurality of dispersing blades are integrally formed on the periphery of the turntable, and two adjacent dispersing blades are arranged in opposite directions.

[0012] As a further optimization solution of the present invention, the driving structure includes a bearing box installed on the top wall of the outer upper housing. A motor is fixedly connected to the top of the bearing box, and the top end of the main shaft is fixedly connected to the output end of the motor through a coupling.

[0013] As a further optimization solution of the present invention, an observation window is installed on one side wall of the outer upper housing.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The conical feed port design of the grinding basket body ensures uniform distribution of materials and avoids local accumulation; the unique wedge-shaped mesh slit screen structure realizes efficient dynamic separation of grinding balls and materials, and at the same time, the dispersing blades can promote the circulating flow between the material grinding area and the dispersing area during rotation; the integrated grinding-dispersing system enables materials to complete ultrafine grinding and fine dispersion synchronously in a single machine through an optimized flow field design, greatly improving the process efficiency.

[0016] 2. Before grinding, a liquid nitrogen cooling system is formed by connecting a liquid nitrogen tank through a quick-release interface to achieve precise control of the ultra-low temperature environment, meeting the processing requirements of heat-sensitive materials. At the same time, the inert gas environment formed by the vaporization of liquid nitrogen effectively prevents material oxidation.

[0017] 3. The outer upper housing, outer lower housing, grinding cylinder body and convex platform retaining ring form a multi-layer sealing structure, which can ensure that the grinding medium does not leak during high-speed operation and low-temperature environment, ensuring the sealing performance of the equipment under extreme conditions.

[0018] 4. An observation window equipped with a high-definition housing observation system is installed on the outer upper housing to realize visual monitoring of the process; integrated online regulation is realized to achieve intelligent adjustment of process parameters, meeting the requirements of modern production management. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is the front view of the overall structure of the present invention;

[0020] Figure 2 It is the schematic diagram of the overall sectional structure of the present invention;

[0021] Figure 3 It is the schematic diagram of the connection structure between the slit screen and the connecting plate of the present invention;

[0022] Figure 4 It is the present invention Figure 3 of the sectional structure schematic diagram;

[0023] Figure 5 It is the three-dimensional structure schematic diagram of the convex platform retaining ring.

[0024] In the figure: 1, motor; 2, bearing box; 3, outer upper housing; 4, grinding cylinder; 5, convex platform retaining ring; 6, outer lower housing; 7, dispersion blade; 8, slit screen; 9, grinding basket body; 10, stirring rotor; 11, main shaft; 12, quick installation interface; 13, observation window; 14, connecting plate; 15, mounting hole; 16, through hole; 17, connecting hole; 18, air inlet hole. Specific embodiments

[0025] The following further describes the present application in detail with reference to the accompanying drawings. It is necessary to point out here that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0026] Embodiment

[0027] As Figure 1 - Figure 5 shown, a cryogenic bead self-separating ball mill includes an outer lower housing 6 and an outer upper housing 3 installed on the top of the outer lower housing 6. A grinding cylinder 4 is arranged inside the outer lower housing 6. The outer upper housing 3, the outer lower housing 6 and the grinding cylinder 4 form a conforming cavity structure to improve the heat preservation performance of the overall structure;

[0028] A grinding basket body 9 is installed inside the grinding cylinder 4. A feed port is provided on the grinding basket body 9. The feed port adopts a conical design, which can ensure the uniform distribution of materials in the grinding basket body 9 and avoid the problem that the local accumulation of materials affects the grinding efficiency of the materials as much as possible; [[ID=?]]

[0029] A screening structure is installed at the bottom end of the grinding basket body 9. The screening structure includes a connecting plate 14 arranged at the bottom of the grinding basket body 9. A slit screen 8 with an annular structure is installed on the connecting plate 14. The mesh holes of the slit screen 8 are wedge-shaped structures. The unique wedge-shaped screen structure can realize the efficient dynamic separation of grinding media and materials and reduce the blockage of materials;

[0030] It should be noted that there seems to be an incomplete or incorrect tag reference in the original text around line . I have translated it as accurately as possible based on the available information.A plurality of annular mounting holes 15 are provided around the connecting plate 14. The connecting plate 14 is fixed to the bottom of the grinding basket 9 by means of external bolts in conjunction with the mounting holes 15. The screw connection method is used to fix the connecting plate 14, which not only provides a stable connection but also facilitates the removal and cleaning of the slit screen 8 when a blockage occurs in the slit screen 8.

[0031] A through hole 16 is also provided in the center of the connecting plate 14, and a main shaft 11 is rotatably connected in the through hole 16. The bottom end of the main shaft 11 extends to the bottom of the screening structure and is connected to a dispersing device. The dispersing device is a turntable installed on one end of the main shaft 11 below the connecting plate 14. A plurality of dispersing blades 7 are integrally formed on the circumference of the turntable. Two adjacent dispersing blades 7 are arranged in opposite directions. When the main shaft 11 rotates, it can drive the dispersing blades 7 to rotate at high speed, promoting the circulation of the ground material between the grinding zone and the dispersing zone, so that the material can be simultaneously ultra-finely crushed and finely dispersed in a single machine, greatly improving the process efficiency.

[0032] The top of the main shaft 11 extends upward into the outer upper shell 3. Grinding balls are arranged in the grinding basket 9. A stirring rotor 10 is fixedly installed on a section of the main shaft 11 located in the inner cavity of the grinding basket 9. When the main shaft 11 rotates, it can also drive the stirring rotor 10 to rotate and drive the grinding balls contained in the inner cavity of the grinding basket 9 to grind and collide with the material, thereby achieving the purpose of fine grinding of the material.

[0033] The main shaft 11 is located at the top of the grinding cylinder 4 and is fixed with a boss retaining ring 5. The center of the boss retaining ring 5 forms a connecting hole 17 that is adapted to the outer diameter of the main shaft 11. The boss retaining ring 5 is sleeved on the main shaft 11 through the connecting hole 17 and fixed to the main shaft 11 to block the material during the grinding process and try to avoid the problem of leakage caused by the splashing of the material due to grinding impact;

[0034] A driving structure is installed on the top of the outer upper shell 3 to drive the main shaft 11 to rotate. The driving structure includes a bearing box 2 installed on the top wall of the outer upper shell 3. The top of the bearing box 2 is fixedly connected to the motor 1. The top of the main shaft 11 is fixed to the output end of the motor 1 through a coupling. It is used to drive the main shaft 11 to rotate at high speed after the motor 1 is energized, driving the mixing rotor 10 to rotate in the grinding basket 9 to grind the material, and at the same time driving the dispersion blades 7 to quickly disperse the ground material;

[0035] A quick-release interface 12 is installed on one side of the outer wall of the outer upper shell 3. The quick-release interface 12 is used to connect an external liquid nitrogen tank. After the liquid nitrogen enters the outer upper shell 3, it can enter the grinding basket 9 through the air inlet 18 opened on the side of the boss retaining ring 5. The specially designed composite cavity structure achieves excellent temperature maintenance performance and realizes precise control of the ultra-low temperature environment to meet the processing requirements of heat-sensitive materials. At the same time, the inert gas environment formed by the vaporization of liquid nitrogen can effectively prevent the oxidation of the material.

[0036] An observation window 13 is installed on one side wall of the outer upper housing 3. The observation window 13 is equipped with a high-definition anti-fog observation system to realize the visual monitoring of the process, integrate online regulation, realize the intelligent adjustment of process parameters, and meet the requirements of modern production management.

[0037] It should be noted that for this ultra-low temperature bead self-separation type ball mill, during use, the material to be ground is introduced into the grinding basket 9, and then the external liquid nitrogen tank is connected through the quick-install interface 12 to introduce liquid nitrogen into the device. The composite cavity structure formed by the outer upper housing 3, the outer lower housing 6 and the grinding cylinder 4 is used to achieve excellent temperature retention performance of the material, achieve precise regulation of the ultra-low temperature environment. At the same time, the inert gas generated by the evaporation of liquid nitrogen can discharge the oxygen in the device to prevent the material from oxidizing during the grinding process. After the oxygen is completely discharged, the user can start the motor 1 to drive the main shaft 11 to rotate. The middle section of the main shaft 11 can drive the stirring rotor 10 to rotate during the rotation process, driving the grinding balls and the material placed in the inner cavity of the grinding basket 9 to grind and impact each other to achieve the purpose of finely grinding the material. The ground material that meets the standard then falls through the lower gap screen 8 and is quickly dispersed and dried under the action of the high-speed rotating dispersion blades 7, which is convenient for the user to use.

[0038] The above embodiments only represent several implementation modes of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A cryogenic bead self-separating bead mill, comprising an outer lower housing (6) and an outer upper housing (3) mounted on top of the outer lower housing (6), characterized in that: A grinding cylinder body (4) is arranged inside the outer lower housing (6). A grinding basket body (9) is installed inside the grinding cylinder body (4). A screening structure is installed at the bottom end of the grinding basket body (9). A main shaft (11) is rotationally connected to the center of the screening structure. The bottom end of the main shaft (11) extends below the screening structure and is connected with a dispersion device. The top of the main shaft (11) extends upward into the outer upper housing (3). A boss retaining ring (5) is fixedly sleeved at the position of the main shaft (11) at the top end of the grinding cylinder body (4). A driving structure for driving the main shaft (11) to rotate is installed at the top of the outer upper housing (3). A quick-connection interface (12) is installed on one outer wall of the outer upper housing (3).

2. The super-low temperature bead self-separation type bead mill according to claim 1, wherein: A feed port is arranged on the grinding basket body (9) installed inside the grinding cylinder body (4), and the feed port is designed in a conical shape.

3. A cryogenic bead self-separating bead mill according to claim 1, wherein: The screening structure includes a connecting plate (14) arranged at the bottom of the grinding basket body (9). A slit screen (8) in an annular structure is installed on the connecting plate (14), and the mesh holes of the slit screen (8) are in a wedge-shaped structure.

4. A super-low-temperature bead self-separating ball mill according to claim 3, characterized in that: A plurality of annularly distributed mounting holes (15) are formed on the periphery of the connecting plate (14). The connecting plate (14) is fixed to the bottom of the grinding basket body (9) through external bolts in cooperation with the mounting holes (15). A through hole (16) for the main shaft (11) to pass through is also formed in the center of the connecting plate (14).

5. The super-low temperature bead self-separating bead mill according to claim 1, wherein: Grinding balls are arranged inside the grinding basket body (9), and a stirring rotor (10) is fixedly installed on a section of the main shaft (11) inside the inner cavity of the grinding basket body (9).

6. The super-low temperature bead self-separation type bead mill according to claim 4, characterized in that: The dispersion device is a turntable installed at one end of the main shaft (11) below the connecting plate (14). A plurality of dispersion vanes (7) are integrally formed on the periphery of the turntable, and two adjacent dispersion vanes (7) are arranged in opposite directions.

7. A cryogenic bead self-separation type bead mill according to claim 1, characterized in that: The driving structure includes a bearing box (2) installed on the top wall of the outer upper housing (3). A motor (1) is fixedly connected to the top of the bearing box (2). The top end of the main shaft (11) is fixedly connected to the output end of the motor (1) through a coupling.

8. The super-low-temperature bead self-separating bead mill according to claim 1, wherein: An observation window (13) is installed on one side wall of the outer upper housing (3).

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