Ball mill for grinding slurry at constant temperature

Abstract

The ball mill comprises a grinding barrel, a stirring assembly, a power motor and a circulating pipe system which are respectively arranged on a machine frame, the periphery of the stirring assembly is rotatably connected to the machine frame in a sleeved mode, one end of the stirring assembly is connected to the output end of the power motor, and the other end of the stirring assembly is located in the grinding barrel. The bottom of the grinding barrel is filled with grinding balls, the stirring assembly can stir the grinding balls, the interior of the grinding barrel is connected to the circulating pipe system in series, and the circulating pipe system is used for circulating or discharging slurry in the grinding barrel. According to the ball mill for constant-temperature grinding of the slurry, the stirring assembly can stir the grinding balls to move, the grinding balls moving relatively are used for grinding the slurry, the grinding efficiency is high, the grinding quality is controllable, materials in the grinding barrel can be circulated through the circulating pipe system, the materials in the grinding barrel can be discharged, and the grinding efficiency is high. And the equipment occupied space and the equipment manufacturing cost are saved.

Description

Technical Field

[0001] The utility model belongs to the field of ball mills, in particular to a ball mill for constant-temperature grinding of slurry. Background Art

[0002] The production of chocolate usually requires the raw cocoa beans to go through a series of production and processing processes such as roasting, crushing, blending, grinding, refining, and deacidification to produce the chocolate that the market demands. In the grinding process, some existing technologies will use fine grinders for processing. However, the shortcomings of fine grinders such as high energy consumption, low output, high noise, complex use, and difficult cleaning will greatly affect the customer's production efficiency. Therefore, ball mills are usually used to replace fine grinders for grinding. The upper part of the grinding machine's cylinder is the mixing area, where blades at different angles ensure the mixing effect. The lower part of the cylinder is divided into a grinding area, which contains high-quality steel balls. With the help of the main shaft rotation, the steel balls collide with each other, so that the medium achieves a fine grinding effect. During the grinding process, the ground material usually needs to be returned to the mixing area for grinding again. The reciprocating grinding is to ensure the grinding quality. After grinding, it is released to the outside of the cylinder. Summary of the Invention

[0003] In view of this, the utility model aims to propose a ball mill for constant temperature grinding of slurry to solve the problems of low slurry grinding efficiency in the existing technology, separate configuration structures of internal circulation and external discharge systems, large equipment space occupation and high equipment cost.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0005] A ball mill for constant temperature grinding of slurry includes a grinding barrel, a stirring assembly, a power motor and a circulation pipe system respectively arranged on a frame. The outer periphery of the stirring assembly is rotatably sleeved on the frame, and one end of the stirring assembly is connected to the output end of the power motor. The other end of the stirring assembly is located in the grinding barrel. The bottom of the grinding barrel is filled with grinding balls. The stirring assembly can move the grinding balls. The interior of the grinding barrel is connected in series to the circulation pipe system, and the circulation pipe system is used for circulating the slurry inside the grinding barrel or discharging it to the outside.

[0006] Furthermore, a synchronous transmission structure is provided on the frame, and one end of the synchronous transmission structure is fixedly connected to one end of the stirring assembly, and the other end of the synchronous transmission structure is fixedly connected to one end of the power motor.

[0007] Furthermore, the grinding barrel includes an outer barrel body and an inner barrel body, the outer barrel body is fixedly mounted on the frame, the outer periphery of the inner barrel body is fixedly sleeved on the inner ring of the outer barrel body, and a gap is provided between the outer barrel body and the inner barrel body, the gap is filled with a constant temperature medium, an end cover is provided at the upper end of the inner barrel body, and an inlet pipe and an outlet pipe are respectively provided on the outer barrel body, the two ends of the external heat exchanger are respectively connected to the inlet pipe and the outlet pipe, and one end of the stirring assembly is located in the inner barrel body.

[0008] Furthermore, the inner barrel body includes a material pipe section, a buffer pipe section and a grinding pipe section arranged on one side from top to bottom, and the buffer pipe section is a hollow frustum structure. The material pipe section is installed at the large end of the buffer pipe section, and the grinding pipe section is installed at the small end of the buffer pipe section. The material pipe section and the grinding pipe section are both hollow cylindrical structures, and the grinding pipe section is filled with grinding balls.

[0009] Furthermore, a barrier screen is provided at the lower end of the grinding pipe section, and the barrier screen is used to intercept the grinding balls.

[0010] Furthermore, the barrier screen is evenly distributed with arc-shaped through holes, and each arc-shaped through hole is equipped with an arc-shaped groove, and the arc-shaped groove is located at the upper end of the barrier screen, and the width of the arc-shaped groove is greater than the width of the arc-shaped through hole.

[0011] Furthermore, a collecting hopper is provided at the lower end of the grinding pipe section, and the collecting hopper is a funnel-shaped structure, and the collecting hopper is connected to one end of the circulation pipe system.

[0012] Furthermore, the circulation pipe system includes a first pipe body, one end of the first pipe body is connected to the collecting bucket, the other end of the first pipe body is respectively connected to one end of the second pipe body and one end of the third pipe body, the other end of the second pipe body passes through the end cover and is connected to the interior of the inner barrel body, the other end of the third pipe body is connected to an external pipeline, and a pressure pump is provided on the first pipe body.

[0013] Furthermore, a valve is provided on each of the second tube body and the third tube body.

[0014] Furthermore, the side walls of the first tube body, the second tube body and the third tube body are all provided with a constant temperature cavity, and the constant temperature cavity is filled with a constant temperature medium.

[0015] Furthermore, a magnetic attraction component is installed on the first tube body, and the magnetic attraction component includes a box body, and a permanent magnet is arranged in the box body.

[0016] Furthermore, the stirring assembly includes a central shaft, one end of which is fixedly connected to the synchronous transmission structure, and a shift rod and stirring blades are respectively arranged axially on the periphery of the central shaft, and the shift rod is located in the grinding pipe section, and the stirring blades are located in the material pipe section.

[0017] Compared with the prior art, the ball mill for constant temperature grinding of slurry described in the present invention has the following features:

[0018] Beneficial effects:

[0019] (1) The utility model discloses a ball mill for constant temperature grinding of slurry, which can stir the grinding balls and move them by means of a stirring assembly. The relatively moving grinding balls are used to grind the slurry, and the grinding efficiency is high and the grinding quality is controllable. The material in the grinding barrel can be circulated through the circulation pipe system, and the material in the grinding barrel can also be discharged, thereby saving equipment space and equipment manufacturing costs.

[0020] (2) The utility model describes a ball mill for constant temperature grinding of slurry. An external heat exchanger circulates the constant temperature medium in the gap. The constant temperature medium in this embodiment is water. The constant temperature water can protect the inner barrel and prevent the slurry temperature in the barrel from being too high due to relative movement during grinding, which may cause unstable product quality.

[0021] (3) The utility model discloses a ball mill for constant temperature grinding of slurry. When in use, the worker closes the valve on the third tube body and opens the valve on the second tube body. Then, the material in the inner barrel body can be circulated in the barrel through the pressure pump, so that the ground material is poured into the material pipe section, and the material in the inner barrel body is ground back and forth, thereby improving the grinding quality. When the valve on the second tube body is closed and the valve on the third tube body is opened, the material in the inner barrel body can be discharged outside, so that the ground material in the inner barrel body can be discharged, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 This is a schematic structural diagram of a ball mill for constant temperature grinding of slurry according to an embodiment of the present utility model;

[0024] Figure 2 A side view schematic diagram of a ball mill for constant temperature grinding of slurry according to an embodiment of the present utility model;

[0025] Figure 3 This is a schematic diagram of the structure inside the grinding barrel according to an embodiment of the present utility model;

[0026] Figure 4 This is a schematic structural diagram of the stirring assembly according to an embodiment of the present utility model;

[0027] Figure 5 This is a schematic top view of the barrier screen according to an embodiment of the present utility model;

[0028] Figure 6 This is a schematic cross-sectional view of the barrier screen according to an embodiment of the present invention.

[0029] Description of reference numerals:

[0030] 1-frame; 2-grinding barrel; 21-outer barrel body; 22-inner barrel body; 221-material pipe section; 222-buffer pipe section; 223-grinding pipe section; 23-end cover; 24-barrier screen; 241-arc-shaped through hole; 242-arc-shaped groove; 25-collecting bucket; 3-stirring assembly; 31-central axis; 32-shift lever; 33-stirring blade; 4-power motor; 5-circulation pipe system; 51-first pipe body; 52-second pipe body; 53-third pipe body; 54-valve; 55-pressure pump; 56-box body. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0033] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0035] like Figures 1-6As shown, a ball mill for constant temperature grinding of slurry includes a grinding barrel 2, a stirring assembly 3, a power motor 4 and a circulation pipe system 5 respectively arranged on a frame 1. The outer periphery of the stirring assembly 3 is rotatably sleeved on the frame 1, and one end of the stirring assembly 3 is connected to the output end of the power motor 4. The other end of the stirring assembly 3 is located in the grinding barrel 2. The bottom of the grinding barrel 2 is filled with grinding balls. The outer diameter of the grinding balls in this embodiment is 12.5 mm. The stirring assembly 3 can move the grinding balls. The interior of the grinding barrel 2 is connected in series to the circulation pipe system 5, and the circulation pipe system 5 is used to circulate or discharge the slurry inside the grinding barrel 2. The ball mill is suitable for slurry grinding. For example, in chocolate grinding, the chocolate can be ground into slurry by the grinding balls, and the stirring assembly 3 can stir the grinding balls to move. The relatively moving grinding balls are used to grind the slurry, with high grinding efficiency and controllable grinding quality. The material in the grinding barrel 2 can be circulated and discharged through the circulation pipe system 5, saving equipment space and equipment manufacturing cost.

[0036] A synchronous transmission structure is provided on the frame 1, and one end of the synchronous transmission structure is fixedly connected to one end of the stirring assembly 3, and the other end of the synchronous transmission structure is fixedly connected to one end of the power motor 4. The synchronous transmission structure is a transmission structure of a sprocket, a chain synchronous transmission structure or a synchronous wheel, a synchronous belt in the prior art. If a synchronous transmission method of a synchronous wheel and a synchronous belt is adopted, the output end of the power motor 4 and one end of the stirring assembly 3 are respectively fixedly connected with a synchronous wheel, and the two synchronous wheels are synchronously rotated through a synchronous belt, and the synchronous belt is an internally toothed belt.

[0037] The grinding barrel 2 includes an outer barrel body 21 and an inner barrel body 22. The outer barrel body 21 is fixedly mounted on the frame 1. The outer periphery of the inner barrel body 22 is fixedly sleeved on the inner ring of the outer barrel body 21. A gap is provided between the outer barrel body 21 and the inner barrel body 22. The gap is filled with a constant temperature medium. An end cover 23 is provided at the upper end of the inner barrel body 22. An inlet pipe and an outlet pipe are respectively provided on the outer barrel body 21. Both ends of the external heat exchanger are respectively connected to the inlet pipe and the outlet pipe. One end of the stirring assembly 3 is located in the inner barrel body 22. The external heat exchanger circulates the constant temperature medium in the gap. The constant temperature medium of this embodiment is water. The constant temperature water can protect the problem of the inner barrel body 22 to prevent the slurry temperature in the barrel from being too high due to relative movement during grinding, which causes unstable product quality.

[0038] The inner barrel body 22 includes a material pipe section 221, a buffer pipe section 222 and a grinding pipe section 223 arranged on one side from top to bottom, and the buffer pipe section 222 is a hollow frustum structure. The material pipe section 221 is installed at the large end of the buffer pipe section 222, and the grinding pipe section 223 is installed at the small end of the buffer pipe section 222. The material pipe section 221 and the grinding pipe section 223 are both hollow cylindrical structures, and the grinding pipe section 223 is filled with grinding balls. During implementation, the staff can lift the end cover 23 to fill the material into the material pipe section 221. The ground material is piled in the material pipe section 221, and then gradually sinks to the grinding pipe section 223 through the buffer pipe section 222. The material can be processed in layers during grinding to improve the grinding efficiency.

[0039] A barrier screen 24 is provided at the lower end of the grinding pipe section 223. The barrier screen 24 is used to intercept the grinding balls to prevent the grinding balls from falling into the circulation pipe system 5. Arc-shaped through holes 241 are evenly distributed on the barrier screen 24, and each arc-shaped through hole 241 is provided with an arc-shaped groove 242. The arc-shaped groove 242 is located at the upper end of the barrier screen 24. The width of the arc-shaped groove 242 is greater than the width of the arc-shaped through hole 241. The arc-shaped groove 242 and the arc-shaped through hole 241 are used in combination to support the grinding balls and prevent the grinding balls from blocking the arc-shaped through hole 241, thereby improving the circulation efficiency of the circulation pipe system 5. A collecting hopper 25 is provided at the lower end of the grinding pipe section 223. The collecting hopper 25 is a funnel-shaped structure. The collecting hopper 25 is connected to one end of the circulation pipe system 5. The collecting hopper 25 is used to collect the slurry after grinding is completed and then release it into the circulation pipe system 5.

[0040] The circulation pipe system 5 includes a first pipe body 51, one end of the first pipe body 51 is connected to the collecting bucket 25, the other end of the first pipe body 51 is respectively connected to one end of the second pipe body 52 and one end of the third pipe body 53, the other end of the second pipe body 52 passes through the end cover 23 and is connected to the inside of the inner barrel body 22, the other end of the third pipe body 53 is connected to the external pipeline, and a pressure pump 55 is provided on the first pipe body 51, and a valve 54 is provided on the second pipe body 52 and the third pipe body 53 respectively. The pressure pump 55 and the valve 54 are both existing technologies. When in use, the working When the personnel closes the valve 54 on the third tube body 53 and opens the valve 54 on the second tube body 52, the material in the inner barrel body 22 can be circulated in the barrel through the pressure pump 55, so that the ground material is poured into the material pipe section 221, and the material in the inner barrel body 22 is reciprocally ground to improve the grinding quality. When the valve 54 on the second tube body 52 is closed and the valve 54 on the third tube body 53 is opened, the material in the inner barrel body 22 can be discharged, so that the ground material in the inner barrel body 22 can be discharged, thereby improving work efficiency.

[0041] In this embodiment, the side walls of the first tube body 51, the second tube body 52 and the third tube body 53 are all provided with a constant temperature cavity, and the constant temperature cavity is filled with a constant temperature medium, and the constant temperature medium is water. The water circuit is circulated by the above-mentioned external heat exchanger to ensure that the slurry temperature in the first tube body 51, the second tube body 52 and the third tube body 53 is consistent, thereby improving production quality.

[0042] Since the grinding balls in this embodiment are steel balls with an outer diameter of 12.5 mm, iron filings or iron powder will be present during the grinding process and when materials are added. In order to improve production quality, a magnetic attraction component is installed on the first tube body 51, and the magnetic attraction component includes a box body 56. A permanent magnet is set in the box body 56. The permanent magnet is used to magnetically attract iron filings or iron powder in the slurry.

[0043] like Figure 4 As shown, the stirring assembly 3 includes a central shaft 31, one end of which is fixedly connected to the synchronous transmission structure, and a shift rod 32 and a stirring blade 33 are respectively arranged axially on the periphery of the central shaft 31, and the shift rod 32 is located in the grinding pipe section 223, and the stirring blade 33 is located in the material pipe section 221. The stirring blade 33 is used to stir the unground material in the upper section, and the shift rod 32 is used to move the grinding balls relative to each other so as to realize the grinding of the slurry.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A ball mill for constant temperature grinding of slurry, characterized by: The invention comprises a grinding barrel (2), a stirring assembly (3), a power motor (4) and a circulation pipe system (5) which are respectively arranged on a frame (1); the outer periphery of the stirring assembly (3) is rotatably sleeved on the frame (1); one end of the stirring assembly (3) is connected to the output end of the power motor (4); the other end of the stirring assembly (3) is located in the grinding barrel (2); the bottom of the grinding barrel (2) is filled with grinding balls; the stirring assembly (3) can move the grinding balls; the inside of the grinding barrel (2) is connected in series to the circulation pipe system (5); and the circulation pipe system (5) is used for circulating the slurry inside the grinding barrel (2) or discharging it to the outside.

2. The ball mill for constant temperature grinding of slurry according to claim 1, characterized in that: A synchronous transmission structure is provided on the frame (1), and one end of the synchronous transmission structure is fixedly connected to one end of the stirring assembly (3), and the other end of the synchronous transmission structure is fixedly connected to one end of the power motor (4).

3. The ball mill for constant temperature grinding of slurry according to claim 1, characterized in that: The grinding barrel (2) comprises an outer barrel body (21) and an inner barrel body (22); the outer barrel body (21) is fixedly mounted on the frame (1); the outer periphery of the inner barrel body (22) is fixedly sleeved on the inner ring of the outer barrel body (21); a gap is provided between the outer barrel body (21) and the inner barrel body (22); the gap is filled with a constant temperature medium; an end cover (23) is provided at the upper end of the inner barrel body (22); a water inlet pipe and a water outlet pipe are respectively provided on the outer barrel body (21); two ends of an external heat exchanger are respectively connected to the water inlet pipe and the water outlet pipe; and one end of the stirring assembly (3) is located in the inner barrel body (22).

4. The ball mill for constant temperature grinding of slurry according to claim 3, characterized in that: The inner barrel body (22) comprises a material pipe section (221), a buffer pipe section (222) and a grinding pipe section (223) arranged on one side from top to bottom, and the buffer pipe section (222) is a hollow frustum structure, the material pipe section (221) is installed at the large end of the buffer pipe section (222), and the grinding pipe section (223) is installed at the small end of the buffer pipe section (222), and both the material pipe section (221) and the grinding pipe section (223) are hollow cylindrical structures, and the grinding pipe section (223) is filled with grinding balls.

5. The ball mill for constant temperature grinding of slurry according to claim 4, characterized in that: A barrier screen (24) is provided at the lower end of the grinding pipe section (223), and the barrier screen (24) is used to intercept the grinding balls; The barrier screen (24) is evenly distributed with arc-shaped through holes (241), and each arc-shaped through hole (241) is provided with an arc-shaped groove (242). The arc-shaped groove (242) is located at the upper end of the barrier screen (24), and the width of the arc-shaped groove (242) is greater than the width of the arc-shaped through hole (241).

6. The ball mill for constant temperature grinding of slurry according to claim 4, characterized in that: A collecting hopper (25) is provided at the lower end of the grinding pipe section (223), and the collecting hopper (25) is a funnel-shaped structure. The collecting hopper (25) is connected to one end of the circulation pipe system (5).

7. The ball mill for constant temperature grinding of slurry according to claim 3, characterized in that: The circulation pipe system (5) comprises a first pipe body (51), one end of the first pipe body (51) is connected to the collecting bucket (25), the other end of the first pipe body (51) is respectively connected to one end of the second pipe body (52) and one end of the third pipe body (53), the other end of the second pipe body (52) passes through the end cover (23) and is connected to the interior of the inner barrel body (22), the other end of the third pipe body (53) is connected to an external pipeline, and a pressure pump (55) is provided on the first pipe body (51); A valve (54) is provided on each of the second tube body (52) and the third tube body (53).

8. The ball mill for constant temperature grinding of slurry according to claim 7, characterized in that: The side walls of the first tube body (51), the second tube body (52) and the third tube body (53) are all provided with a constant temperature cavity, and the constant temperature cavity is filled with a constant temperature medium.

9. The ball mill for constant temperature grinding of slurry according to claim 7, characterized in that: A magnetic attraction component is installed on the first tube body (51), and the magnetic attraction component includes a box body (56), and a permanent magnet is arranged in the box body (56).

10. The ball mill for constant temperature grinding of slurry according to claim 4, characterized in that: The stirring assembly (3) comprises a central shaft (31), one end of which is fixedly connected to a synchronous transmission structure, and a shifting rod (32) and a stirring blade (33) are respectively arranged along the axial direction on the periphery of the central shaft (31), wherein the shifting rod (32) is located in the grinding pipe section (223), and the stirring blade (33) is located in the material pipe section (221).

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