Rotor structure and sand mill

Abstract

The utility model discloses a rotor structure and sand mill relates to grinding technical field, the rotor structure includes rotating piece and driving piece, the rotating piece is rotatingly installed in the casing around the axis that extends along the vertical direction, the rotating piece is equipped with the grinding channel, the upper end of the grinding channel is equipped with the feed hole, the lower end of the grinding channel is equipped with the discharge hole, and the driving piece is equipped with the feed hole and the discharge hole. The driving part is arranged at the upper end of the grinding channel and used for driving slurry in the grinding channel to flow downwards, the slurry and the grinding medium can flow into the grinding channel from the upper end of the rotating part by forming the feeding hole, the slurry and the grinding medium can flow out of the grinding channel from the lower end of the rotating part by forming the discharging hole, and the slurry and the grinding medium can flow out of the grinding channel from the lower end of the rotating part by forming the driving part. According to the sand mill, the rotating part is arranged to drive slurry and a grinding medium in the grinding channel to flow downwards, so that the slurry and the grinding medium can circularly flow on the inner side and the outer side of the rotating part, the grinding time of the slurry can be effectively prolonged, and the grinding quality of the sand mill can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding, and particularly relates to a rotor structure and a sand mill. Background Art

[0002] A sand mill, also known as a bead mill, is mainly a wet grinding device for chemical liquid products. It has the advantages of high production efficiency, strong continuity, low cost, high product fineness, etc. It is widely used in the production industries such as cement, silicate products, new building materials, refractories, fertilizers, black and non-ferrous metal beneficiation, glass ceramics, coatings / inks / dyes / paints, new materials, pesticides, food additives, etc. At present, the grinding principle of a sand mill is to generate shear force, collision force, and crushing force through the high-speed movement of a rotor to disperse, break, grind, depolymerize, homogenize, and emulsify the solid particle slurry in a fluid. The grinding efficiency of the existing vertical sand mill is relatively low, and the residence time of the slurry in the grinding chamber is short, resulting in a long cycle grinding time and high grinding energy consumption. Content of the Utility Model

[0003] The main purpose of the utility model is to propose a sand mill, aiming to solve the problems of long cycle grinding time and high grinding energy consumption of the sand mill.

[0004] To achieve the above object, the rotor structure proposed by the utility model is used for a sand mill, and the rotor structure includes:

[0005] A rotating member rotatably mounted to the housing around an axis extending in the up-down direction, the rotating member is provided with a grinding channel, an inlet hole is provided at the upper end of the grinding channel, and an outlet hole is provided at the lower end of the grinding channel; and,

[0006] A driving member is provided at the upper end of the grinding channel for driving the slurry in the grinding channel to flow downward.

[0007] In an embodiment, the rotating member includes a rotating shaft extending in the up-down direction and a rotating part mounted to the rotating shaft;

[0008] Wherein, the inlet hole and the outlet hole are provided on the rotating part.

[0009] In an embodiment, the driving member includes an impeller provided on the rotating shaft, and a plurality of the impellers are arranged at intervals in the circumferential direction of the rotating shaft.

[0010] In an embodiment, the inlet hole is inclined, and its inclination direction is inclined from the inside to the outside in the rotating direction of the rotating member.

[0011] In an embodiment, the outlet hole is inclined, and its inclination direction is inclined from the inside to the outside in the direction opposite to the rotating direction of the rotating member.

[0012] In one embodiment, a plurality of first stirring members are arranged on the outer side wall of the lower end of the rotating member in a sheet shape, and the plurality of first stirring members are arranged at intervals along the circumferential direction of the rotating member to drive the slurry and the grinding medium in the housing to flow upward.

[0013] In one embodiment, the rotor structure further includes a plurality of second stirring members, wherein:

[0014] A plurality of the second stirring members are arranged at intervals along the circumferential direction of the rotating member on the outer side wall of the rotating member; and / or,

[0015] A plurality of the second stirring members are arranged at intervals in the up-down direction on the outer side wall of the rotating member; and / or,

[0016] A plurality of the second stirring members are arranged at intervals along the circumferential direction of the rotating member on the inner side wall of the lower end of the rotating member.

[0017] In one embodiment, both the first stirring member and the second stirring member include a stirring body, the stirring body includes a stirring skeleton and a covering portion covering the stirring skeleton, the material of the stirring skeleton is a metal material, and the material of the covering portion is a ceramic.

[0018] In one embodiment, the rotating member includes an upper rotor and a lower rotor detachably mounted on the upper rotor.

[0019] The present utility model also provides a sand mill, including the above rotor structure.

[0020] In the technical solution of the present utility model, by providing the rotating member to drive the driving member to rotate, by providing the feed hole to enable the slurry and the grinding medium to flow into the grinding channel from the upper end of the rotating member, by providing the discharge hole to enable the slurry and the grinding medium to flow out of the grinding channel from the lower end of the rotating member, and by providing the driving member to drive the slurry and the grinding medium in the grinding channel to flow downward, so that the slurry and the grinding medium can circulate inside and outside the rotating member, the grinding time of the slurry can be effectively increased, thereby contributing to improving the grinding quality and grinding efficiency of the sand mill. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0022] Figure 1Schematic diagram of the structure of an embodiment of the sand mill provided by the present utility model;

[0023] Figure 2 Schematic diagram of the structure of another embodiment of the sand mill provided by the present utility model;

[0024] Figure 3 Schematic diagram of the structure of yet another embodiment of the sand mill provided by the present utility model;

[0025] Figure 4 Schematic diagram of the structure of an embodiment of the feeding structure of the sand mill provided by the present utility model;

[0026] Figure 5 Schematic diagram of the structure of another embodiment of the feeding structure of the sand mill provided by the present utility model;

[0027] Figure 6 Schematic diagram of the structure of an embodiment of the rotor structure of the sand mill provided by the present utility model;

[0028] Figure 7 Schematic diagram of the structure of another embodiment of the rotor structure of the sand mill provided by the present utility model;

[0029] Figure 8 For Figure 7 The cross-sectional structure diagram along the A-A direction in

[0030] Figure 9 For Figure 7 The cross-sectional structure diagram along the B-B direction in

[0031] Figure 10 For Figure 7 The cross-sectional structure diagram along the C-C direction in

[0032] Figure 11 Schematic diagram of the structure of an embodiment of the separation structure of the sand mill provided by the present utility model;

[0033] Figure 12 Schematic diagram of the structure of another embodiment of the feeding structure of the sand mill provided by the present utility model;

[0034] Figure 13 Schematic diagram of the structure of yet another embodiment of the feeding structure of the sand mill provided by the present utility model;

[0035] Figure 14 Schematic diagram of the structure of still another embodiment of the feeding structure of the sand mill provided by the present utility model.

[0036] Explanation of the reference numerals in the drawings:

[0037] 100, Sand mill; 1, Outer shell; 11, Feed inlet; 12, Discharge port; 2, Feed structure; 21, Inner shell; 22, Feed channel; 221, First feed flow channel; 222, Second feed flow channel; 23, Feed pipe; 231, Diversion flow channel; 2311, First annular flow channel; 2312, Second annular flow channel; 24, Sleeve; 25, Drain pipe; 26, Annular partition; 27, Protective layer; 28, Stirring protrusion; 3, Rotor structure; 31, Rotating part; 311, Rotating shaft; 312, Rotating portion; 3121, Grinding channel; 3122, Feed hole; 3123, Discharge hole; 313, Upper rotor; 314, Lower rotor; 32, Driving part; 33, First stirring part; 34, Second stirring part; 4, Separation structure; 41, Rotating part; 411, Main shaft; 412, Rotating body; 413, Discharge channel; 4131, First discharge flow channel; 4132, Second discharge flow channel; 42, Separation part; 421, Blade part; 422, Diversion section; 43, Anti-lifting part; 5, Frame; 6, Operating platform; 61, Guardrail; 62, Ladder.

[0038] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0039] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0040] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0041] In addition, if descriptions such as "first" and "second" are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0042] A sand mill, also known as a bead mill, is mainly a wet grinding device for chemical liquid products. It has the advantages of high production efficiency, strong continuity, low cost, and high product fineness. It is widely used in production industries such as cement, silicate products, new building materials, refractories, fertilizers, black and non-ferrous metal beneficiation, glass ceramics, coatings / inks / dyes / paints, new materials, pesticides, food additives, etc. Currently, the grinding principle of a sand mill is that through the high-speed movement of the rotor, the grinding medium generates shear force, collision force, and crushing force to disperse, break, grind, depolymerize, homogenize, and emulsify the solid particle slurry in the fluid. The grinding efficiency of existing vertical sand mills is relatively low, and the residence time of the slurry in the grinding chamber is short, resulting in a long cycle grinding time and high grinding energy consumption.

[0043] Based on this, the present utility model proposes a sand mill. It aims to solve the problems of long cycle grinding time and high grinding energy consumption of the sand mill. Among them, Figures 1 to 14 is a schematic structural diagram of the sand mill provided by the present utility model.

[0044] Please refer to Figures 1 to 3 , in an embodiment of the present utility model, the sand mill 100 includes a housing 1, a rotor structure 3, a feeding structure 2, and a separation structure 4. The housing 1 has a feeding port 11 and a discharging port 12 distributed along the up-down direction, and the feeding port 11 is arranged below the discharging port 12. The rotor structure 3 is arranged inside the housing 1 to grind the slurry inside the housing 1. The feeding structure 2 is arranged inside the rotor structure 3 and corresponds to the feeding port 11 to convey the slurry along the first horizontal direction. The separation structure 4 is arranged inside the housing 1 and corresponds to the discharging port 12 to separate the slurry from the grinding medium.

[0045] The technical solution of the present utility model is to install the rotor structure 3, the feeding structure 2 and the separation structure 4 by setting the outer shell 1. Through the feeding port 11 and the discharging port 12 arranged vertically, the slurry can flow vertically. By setting the feeding structure 2 at the feeding port 11, the conveying direction of the slurry is changed so as to convey the slurry horizontally into the outer shell 1. By setting the rotor structure 3 in the outer shell 1, the grinding medium in the outer shell 1 can be agitated so that the grinding medium can grind the slurry. By setting the separation structure 4 at the discharging port 12, the slurry and the grinding medium can be separated to prevent the grinding medium from flowing out of the outer shell 1 with the slurry. By setting the feeding port 11 below the discharging port 12, the slurry can flow from bottom to top, so as to reduce the probability of the grinding medium flowing out of the outer shell 1 with the slurry, thus solving the problem that the grinding medium of the sand mill 100 is likely to flow out of the discharging port with the slurry.

[0046] It should be noted that the first horizontal direction can be a direction parallel to the horizontal direction or a direction with a certain angle to the horizontal direction, as long as it faces the horizontal direction, and the present utility model does not make a limitation thereto. Exemplarily, the first horizontal direction can be a left-right direction, a front-back direction, or a direction that is inclined upward or downward from inside to outside.

[0047] In an embodiment of the present utility model, please refer to Figure 4 and Figure 5 , the feeding structure 2 includes an inner shell 21, and the inner shell 21 forms a feeding channel 22. The inlet of the feeding channel 22 is arranged on the bottom wall of the inner shell 21, and the outlet is arranged on the side wall of the inner shell 21. In this way, the inlet of the feeding channel 22 is arranged on the bottom wall of the inner shell 21 to communicate with the feeding port 11, and the outlet of the feeding channel 22 is arranged on the side wall of the inner shell 21 so that the slurry in the feeding channel 22 can flow horizontally into the outer shell 1 to prevent the grinding medium in the outer shell 1 from blocking the feeding port 11.

[0048] Furthermore, a plurality of outlets of the feeding channel 22 are arranged at intervals along the circumferential direction of the inner shell 21. In this way, by setting a plurality of outlets, the slurry can flow out of the feeding channel 22 quickly, which helps to improve the feeding speed of the feeding structure 2.

[0049] Further, the feed channel 22 includes a first feed flow channel 221 and a second feed flow channel 222 communicating with the first feed flow channel 221. Both the first feed flow channel 221 and the second feed flow channel 222 extend in the up-and-down direction. Among them, the feed channel 22 includes the first feed flow channel 221 and the second feed flow channel 222. The inlet of the feed channel 22 includes the inlet of the first feed flow channel 221, and the outlet includes the outlet of the second feed flow channel 222. In this way, by providing the first feed flow channel 221 and the second feed flow channel 222, a high point is formed within the inner shell 21 to prevent the grinding medium within the outer shell 1 from entering the feed channel 22, thereby helping to avoid clogging of the feed channel 22 by the grinding medium.

[0050] It can be understood that there are various types of the feed channel 22. In one embodiment, the feed channel 22 includes a third feed flow channel extending in the up-and-down direction and a fourth feed flow channel extending in the horizontal direction. The fourth feed flow channel communicates with the third feed flow channel, such that the slurry first flows in the up-and-down direction and then in the horizontal direction, enabling the slurry to flow into the housing in the horizontal direction and into the fourth feed flow.

[0051] Further, the feed structure 2 further includes a feed pipe 23 disposed within the inner shell 21. The feed pipe 23 and the inner shell 21 jointly define a diversion flow channel 231. Among them, the first feed flow channel 221 includes the inner pipe of the feed pipe 23, and the second feed flow channel 222 includes the diversion flow channel 231. In this way, by providing the feed pipe 23 within the inner shell 21, the first feed flow channel 221 and the second feed flow channel 222 are respectively formed inside and outside the feed pipe 23, enabling the second feed flow channel 222 to surround the outside of the first feed flow channel 221, such that the first feed flow channel 221 and the second feed flow can be evenly distributed within the outer shell 1, which can not only make full use of the space of the inner shell 21 but also facilitate subsequent cooling of the feed channel 22.

[0052] It can be understood that there are various ways to form the first feed flow channel 221 and the second feed flow channel 222. In another embodiment, the feed structure 2 includes a feed pipe 23. The feed pipe 23 includes a first pipe section and a second pipe section that communicate with each other. Both the first pipe section and the second pipe section extend in the up-and-down direction. The feed channel 22 includes the first pipe section and the second pipe section. The inlet of the feed channel 22 includes the inlet of the first pipe section, and the outlet of the feed channel 22 includes the outlet of the second pipe section. In this way, by bending the feed pipe 23, the first feed flow channel 221 and the second feed flow are formed.

[0053] In an embodiment of the present utility model, the feeding structure 2 further includes a sleeve 24 disposed between the feeding pipe 23 and the inner shell 21, so that the diversion flow channel 231 forms a first annular flow channel 2311 and a second annular flow channel 2312 inside the first annular flow channel 2311. The first annular flow channel 2311 is used to communicate with a cooling water pipeline. Among them, the second feeding flow channel 222 includes the second annular flow channel 2312. Thus, by providing the sleeve 24, the first annular flow channel 2311 is formed with the inner shell 21, and the second annular flow channel 2312 is formed with the feeding pipe 23, so as to form the first annular flow channel 2311 for cooling water to flow outside the feeding channel 22, to cool the feeding channel 22, thereby helping to reduce the temperature of the inner shell 21.

[0054] Since the feeding structure 2 is disposed inside the rotor structure 3, the inlet and outlet of the first annular flow channel 2311 can only be provided at the bottom of the outer shell 1, resulting in the cooling water in the inner shell 21 may directly flow out from the outlet of the annular flow channel, affecting the heat dissipation effect. For this reason, in this embodiment, please refer to Figure 5 , the feeding structure 2 further includes a drain pipe 25 disposed at the outlet of the first annular flow channel 2311. The inlet of the drain pipe 25 extends upward to the upper end of the first annular flow channel 2311. Thus, by providing the drain pipe 25, it is convenient to improve so that the cooling water in the first annular flow channel 2311 can flow upward, preventing the cooling water from only flowing at the lower end of the inner shell 21, thereby helping to improve the heat dissipation effect of the feeding structure 2.

[0055] In an embodiment of the present utility model, the feeding structure 2 further includes a plurality of annular partitions 26 disposed in the first annular flow channel 2311. The plurality of annular partitions 26 are spaced apart along the up and down direction. Thus, by providing the plurality of annular partitions 26, the flow path of the cooling water is defined in the first annular flow channel 2311, so that the cooling water can flow along a preset path, so as to improve the heat dissipation effect of the feeding structure 2. Further, two adjacent annular partitions 26 are arranged in a staggered manner, so that the cooling water can flow back and forth and bend upward in the first annular flow channel 2311, increasing the flow range of the cooling water and improving the heat dissipation effect of the cooling water.

[0056] In an embodiment of the utility model, a protective layer 27 is provided on the outer side of the inner shell 21. Since the feeding structure 2 is arranged inside the rotor structure 3, the grinding medium will impact the inner shell 21. Therefore, by providing the protective layer 27, the inner shell 21 can be protected. Further, the material of the protective layer 27 is a flexible material. In this way, by using the flexible material, the impact force of the grinding medium can be absorbed, which can not only reduce the noise of the sand mill 100 but also protect the inner shell 21. It can be understood that there are various flexible materials. For example, it can be rubber or polyurethane, etc. The utility model does not limit this.

[0057] In an embodiment of the utility model, stirring convex parts 28 are provided on the outer side wall of the inner shell 21. In this way, by providing the stirring convex parts 28, when the rotor structure 3 stirs the slurry in the outer shell 1, the inner shell 21 can stir the slurry in the rotor structure 3, which helps to improve the grinding quality of the sand mill 100.

[0058] In an embodiment of the utility model, please refer to Figure 3 、 Figure 6 and Figure 7 The rotor structure 3 includes a rotating member 31 and a driving member 32. The rotating member 31 is rotatably installed on the outer shell 1 around an axis extending in the up-down direction. The rotating member 31 is provided with a grinding channel 3121. The upper end of the grinding channel 3121 is provided with a feeding hole 3122, and the lower end of the grinding channel 3121 is provided with a discharging hole 3123. The driving member 32 is arranged at the upper end of the grinding channel 3121 to drive the slurry in the grinding channel 3121 to flow downward. In this way, by providing the rotating member 31, the driving member 32 can be driven to rotate. By providing the feeding hole 3122, the slurry and the grinding medium can flow into the grinding channel 3121 from the upper end of the rotating member 31. By providing the discharging hole 3123, the slurry and the grinding medium can flow out of the grinding channel 3121 from the lower end of the rotating member 31. And by providing the driving member 32, the slurry and the grinding medium in the grinding channel 3121 can be driven to flow downward, so that the slurry and the grinding medium can circulate inside and outside the rotating member 31, effectively increasing the grinding time of the slurry, which helps to improve the grinding quality of the sand mill 100.

[0059] In an embodiment of the present utility model, the rotating member 31 includes a rotating shaft 311 extending in the up-and-down direction and a rotating part 312 mounted on the rotating shaft 311. Among them, the feed hole 3122 and the discharge hole 3123 are provided in the rotating part 312. Thus, by providing the rotating shaft 311, it is not only convenient to install the rotating part 312, but also convenient to install the driving part subsequently, and it is also convenient to form the grinding channel 3121 in the rotating part 312. It can be understood that the rotating part 312 can be directly mounted on the rotating shaft 311, or can be spacedly mounted on the rotating shaft 311 through other structures, etc., and the present utility model does not limit this.

[0060] In an embodiment of the present utility model, please refer to Figure 7 and Figure 9 , the driving member 32 includes an impeller provided on the rotating shaft 311, and a plurality of the impellers are arranged at intervals in the circumferential direction of the rotating shaft 311. Thus, by providing the impeller, it is convenient to drive the slurry and the grinding medium in the grinding channel 3121 to flow downward. Of course, in other embodiments, the driving member 32 can also be a driving plate, etc., and the present utility model does not limit this. Further, the impeller can also be provided on the inner wall surface of the rotating part 312, and the present utility model does not limit this.

[0061] Furthermore, there are various connection methods between the impeller and the rotating shaft 311. The impeller can be riveted to the rotating shaft 311 or screwed to the rotating shaft 311, etc., and the present utility model does not limit this. Specifically, in this embodiment, the impeller is detachably mounted on the rotating shaft 311 for easy maintenance or replacement.

[0062] In an embodiment of the present utility model, please refer to Figure 6 , Figure 7 and Figure 9 , the feed hole 3122 is inclined, and its inclination direction is inclined from the inside to the outside in the rotation direction of the rotating member 31. Thus, the inclination direction of the feed hole 3122 is the same as the rotation direction of the driving member 32, so that the slurry and the grinding medium can smoothly flow into the grinding channel 3121 and flow downward under the drive of the driving member 32.

[0063] In an embodiment of the present utility model, please refer to Figure 6 , Figure 7 and Figure 10, the discharge hole 3123 is inclined, and its inclination direction is inclined from the inside to the outside away from the rotation direction of the rotating member 31. In this way, the inclination direction of the discharge hole 3123 is opposite to the rotation direction of the driving member 32, so that the slurry and the grinding medium can be thrown out of the grinding channel 3121 under the action of centrifugal force, so as to prevent the slurry and the grinding medium from accumulating in the grinding channel 3121.

[0064] In an embodiment of the utility model, please refer to Figure 6 , a plurality of first stirring members 33 arranged in a sheet shape are provided on the outer side wall of the lower end of the rotating member 31. The plurality of first stirring members 33 are arranged at intervals along the circumferential direction of the rotating member 31 to drive the slurry in the housing 1 to flow upward. In this way, by providing the plurality of first stirring members 33, when the rotating member 31 rotates, an upward driving force can be generated to drive the slurry and the grinding medium outside the rotating member 31 to flow upward, so that the slurry and the grinding medium can circulate inside and outside the rotating member 31, increasing the grinding time of the slurry and improving the grinding quality. Further, the first stirring member 33 is inclined so that the first stirring member 33 can generate an upward driving force to drive the slurry and the grinding medium to flow upward.

[0065] It can be understood that there are various connection methods between the first stirring member 33 and the rotating member 31. The first stirring member 33 can be fixedly installed on the rotating member 31 or detachably installed on the rotating member 31, etc. The utility model does not limit this. Further, the first stirring member 33 is screwed to the rotating member 31, which is convenient for loading and unloading the first stirring member 33 and adjusting the inclination angle of the first stirring member 33.

[0066] In an embodiment of the utility model, the rotor structure 3 further includes a plurality of second stirring members 34. The plurality of second stirring members 34 are arranged at intervals along the circumferential direction of the rotating member 31 on the outer side wall of the rotating member 31. In this way, when the rotating member 31 rotates, the slurry outside the rotating member 31 is stirred, which helps to improve the grinding efficiency of the rotor structure 3.

[0067] In an embodiment of the utility model, the rotor structure 3 further includes a plurality of second stirring members 34. The plurality of second stirring members 34 are arranged at intervals in the up-down direction on the outer side wall of the rotating member 31. In this way, when the rotating member 31 rotates, the slurry outside the rotating member 31 is stirred, which helps to improve the grinding efficiency of the rotor structure 3.

[0068] In an embodiment of the utility model, please refer to Figure 8, the rotor structure 3 further includes a plurality of second stirring members 34, and the plurality of second stirring members 34 are arranged at intervals along the circumferential direction of the rotating member 31 on the inner side wall of the lower end of the rotating member 31. In this way, when the rotating member 31 rotates, the slurry inside the rotating member 31 is stirred, which helps to improve the grinding efficiency of the rotor structure 3.

[0069] It can be understood that since the driving member 32 is provided at the upper end of the rotating member 31, if the second stirring member 34 is arranged on the inner side wall of the upper end of the rotating member 31, it will interfere with the flow of the slurry inside the rotating member 31. Therefore, the second stirring member is arranged on the inner side wall of the lower end of the rotating member 31 to avoid affecting the flow of the slurry inside the rotating member 31. Specifically, the shape of the second stirring member 34 has various types. For example, it can be circular, polygonal, etc., and the present invention does not limit this. Further, there are various connection methods between the second stirring member 34 and the rotating member 31. The second stirring member 34 can be fixedly installed on the rotating member 31, or can be detachably installed on the rotating member 31, etc., and the present invention does not limit this.

[0070] It should be noted that for the above three related technical features: "a plurality of the second stirring members 34 are arranged at intervals along the circumferential direction of the rotating member 31 on the outer side wall of the rotating member 31", "a plurality of the second stirring members 34 are arranged at intervals in the up-down direction on the outer side wall of the rotating member 31", "a plurality of the second stirring members 34 are arranged at intervals along the circumferential direction of the rotating member 31 on the inner side wall of the lower end of the rotating member 31", any one can be set, any two can be set, or all three can be set at the same time. Obviously, setting all three at the same time has a better effect.

[0071] In an embodiment of the present invention, both the first stirring member 33 and the second stirring member 34 include a stirring body. The stirring body includes a stirring skeleton and a covering portion covering the stirring skeleton. The material of the stirring skeleton is a metal material, and the material of the covering portion is a ceramic. In this way, by setting the stirring skeleton of the metal material, the strength of the stirring body is increased, and by setting the covering portion of the ceramic material, the wear resistance of the stirring body can be increased, and the resistance of the stirring body can be reduced.

[0072] In an embodiment of the present invention, the rotating member 31 includes an upper rotor 313 and a lower rotor 314 detachably installed on the upper rotor 313. In this way, by adopting the split upper rotor 313 and the lower rotor 314, on the one hand, the size of the rotating member 31 can be reduced, which helps to reduce the manufacturing difficulty of the rotating member 31, and on the other hand, the lower rotor 314 can be detached separately to be installed on the feeding structure 2, which helps to reduce the assembly difficulty of the sand mill 100.

[0073] In an embodiment of the present utility model, please refer to Figures 11 to 14 , the separation structure 4 includes a rotating member 41 and a separating member 42. The rotating member 41 is rotatably installed at the discharge port 12 around an axis extending in the up-and-down direction. A discharge channel 413 is provided in the rotating member 41 for discharging the slurry in the housing 1. The separating member 42 is arranged in the discharge channel 413 for separating the slurry from the grinding medium. In this way, by providing the rotating member 41, it is convenient to provide the discharge channel 413 to discharge the slurry in the housing 1, and it can also drive the separating member 42 to rotate. At the same time, by providing the separating member 42, when the rotating member 41 rotates, the separating member 42 can separate the slurry and the grinding medium in the discharge channel 413 to prevent the grinding medium from flowing out of the housing 1 along with the slurry.

[0074] In an embodiment of the present utility model, the rotating member 41 includes a main shaft 411 and a rotating body 412. The main shaft 411 is rotatably installed at the discharge port 12 around an axis extending in the up-and-down direction. The main shaft 411 is provided with a first discharge flow channel 4131 extending along its axial direction. The rotating body 412 is installed on the main shaft 411. The rotating body 412 is provided with a second discharge flow channel 4132 extending along the radial direction of the main shaft 411. The second discharge flow channel 4132 communicates with the first discharge flow channel 4131. Wherein, the discharge channel 413 includes the first discharge flow channel 4131 and the second discharge flow channel 4132. The separating member 42 is arranged in the second discharge flow channel 4132. In this way, by providing the main shaft 411 and the rotating body 412, it is convenient to provide the first discharge flow channel 4131 and the second discharge flow channel 4132 respectively, and reduce the manufacturing difficulty of the discharge channel 413.

[0075] In an embodiment of the present utility model, the separating member 42 includes a plurality of blade parts 421 arranged in the second discharge flow channel 4132. The plurality of blade parts 421 are arranged at intervals along the circumferential direction of the main shaft 411. In this way, by providing the plurality of blade parts 421, when the rotating body 412 rotates, the grinding medium in the second discharge flow channel 4132 can be thrown out of the rotating body 412 to separate the grinding medium from the slurry. Further, there are various connection methods between the blade part 421 and the rotating body 412. The blade part 421 can be installed on the rotating body 412 by screws or by bolts, etc. The present utility model does not limit this.

[0076] In an embodiment of the present utility model, please refer to Figure 13, two adjacent blade parts 421 define a diversion section 422. In the cross-section along the main shaft 411, the diversion section 422 is inclined, and its inclination direction is inclined from the inside to the outside away from the rotation direction of the main shaft 411. Among them, the second discharge channel 4132 includes the diversion section 422. In this way, the inclination direction of the diversion section 422 is opposite to the rotation direction of the rotating body 412, so that the grinding medium can be thrown out of the diversion section 422 under the action of centrifugal force to separate the slurry and the grinding medium.

[0077] In an embodiment of the present invention, please refer to Figure 13 , two adjacent blade parts 421 define a diversion section 422. In the cross-section along the main shaft 411, the width of the diversion section 422 is gradually increasing from the inside to the outside, so as to increase the resistance of the grinding medium flowing towards the middle of the rotating body 412, which is beneficial to delaying the flow of the grinding medium, reducing the flow velocity of the grinding medium, and enabling the grinding medium to be thrown out of the second discharge channel 413.

[0078] In an embodiment of the present invention, please refer to Figure 13 , two adjacent blade parts 421 define a diversion section 422. The diversion section 422 is arc-shaped, so as to reduce the resistance of the grinding medium flowing towards the periphery of the rotating body 412, and enable the grinding medium to be thrown out of the second discharge channel 413.

[0079] It should be noted that the above three related technical features: "the diversion section 422 is inclined", "in the cross-section along the main shaft 411, the width of the diversion section 422 is gradually increasing from the inside to the outside", and "the diversion section 422 is arc-shaped" can be set selectively, set in pairs, or set simultaneously. Obviously, the simultaneous setting has a better effect.

[0080] In an embodiment of the present invention, two separation members 42 are provided, and the two separation members 42 are arranged at intervals in the radial direction of the main shaft 411. In this way, by providing the two separation members 42, the slurry in the second discharge channel 4132 is subjected to secondary separation, thereby helping to improve the separation effect of the separation structure 4.

[0081] In an embodiment of the present invention, please refer to Figure 13, two adjacent blade parts 421 define a diversion section 422. The two diversion sections 422 of the two separating members 42 include a first diversion section 422 and a second diversion section 422 inside the first diversion section 422. The width of the first diversion section 422 is greater than that of the second diversion section 422, so as to increase the resistance of the grinding medium flowing towards the middle of the rotating body 412, which is beneficial to delaying the flow of the grinding medium, reducing the flow speed of the grinding medium, and enabling the grinding medium to be thrown out of the second discharge channel 413.

[0082] In an embodiment of the present invention, the two diversion sections 422 of the two separating members 42 include a first diversion section 422 and a second diversion section 422 inside the first diversion section 422. The first diversion section 422 and the second diversion section 422 are arranged in a staggered manner, so that the outlet of the first diversion section 422 and the inlet of the second diversion section 422 can be staggered, so as to prevent the first diversion section 422 and the second diversion section 422 from affecting each other, and enable the first diversion section 422 and the second diversion section 422 to perform separation independently respectively.

[0083] It should be noted that the above three related technical features: "the width of the first diversion section 422 is greater than that of the second diversion section 422", "the first diversion section 422 and the second diversion section 422 are arranged in a staggered manner", can be set alternatively or simultaneously. Obviously, the simultaneous setting has a better effect.

[0084] In an embodiment of the present invention, there are various connection methods between the main shaft 411 and the rotating body 412. The rotating body 412 can be riveted to the main shaft 411, or can be screwed to the main shaft 411, etc. The present invention does not limit this. Specifically, in this embodiment, the rotating body 412 is detachably installed on the main shaft 411. In this way, by using a detachable connection, it is convenient to load and unload the rotating body 412, thereby facilitating maintenance or replacement.

[0085] It should be noted that there are various detachable connection methods. For example, it can be a screw connection method, or a snap connection method, etc. The present invention does not limit this.

[0086] In an embodiment of the present invention, please refer to Figure 11 and Figure 14, the separation structure 4 further includes a plurality of anti-lifting parts 43 installed on the outer peripheral side of the rotating part 41. The plurality of anti-lifting parts 43 are arranged at intervals along the circumferential direction of the rotating part 41. In this way, by providing the plurality of anti-lifting parts 43, it is possible to prevent the slurry and the grinding medium from flowing upward into the separation structure 4, so as to prevent the grinding medium from accumulating above the rotor structure 3 and reduce the possibility of the grinding medium flowing out of the housing 1.

[0087] In an embodiment of the present invention, the anti-lifting part 43 is inclined to drive the grinding medium to flow downward. In this way, the anti-lifting part 43 is inclined to be able to generate a downward driving force when the rotating part 41 rotates, so as to drive the grinding medium to flow back downward and prevent the grinding medium from overflowing.

[0088] In an embodiment of the present invention, the sand mill 100 further includes a frame 5, and the housing 1 is installed on the frame 5. In this way, by providing the frame 5, the housing 1 can be placed upright.

[0089] In an embodiment of the present invention, the sand mill 100 further includes an operation platform 6 provided on the frame 5. The operation platform 6 is provided above the housing 1. In this way, by providing the operation platform 6, it is convenient for the staff to operate or repair the sand mill 100. Further, the sand mill 100 further includes a guardrail 61 provided on the operation platform 6 to prevent people from falling, thereby helping to improve the safety of the sand mill 100. Further, the sand mill 100 further includes a ladder 62 provided on the frame 5 to facilitate people to get on and off the operation platform 6.

[0090] The above are only exemplary embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied to other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A rotor structure for a sand mill, characterized in that, The rotor structure includes: a rotating member, which is rotatably mounted to the housing of the sand mill around an axis extending in the vertical direction. The rotating member is provided with a grinding channel. The upper end of the grinding channel is provided with a feed hole, and the lower end of the grinding channel is provided with a discharge hole; and a driving member, which is arranged at the upper end of the grinding channel and is used to drive the slurry in the grinding channel to flow downward.

2. The rotor structure according to claim 1, characterized in that, The rotating member includes a rotating shaft extending in the vertical direction and a rotating part mounted to the rotating shaft; wherein, the feed hole and the discharge hole are arranged on the rotating part.

3. The rotor structure according to claim 2, characterized in that, The driving member includes an impeller arranged on the rotating shaft, and a plurality of the impellers are arranged at intervals along the circumferential direction of the rotating shaft.

4. The rotor structure according to claim 1, wherein, The feed hole is inclined, and its inclination direction is inclined from the inside to the outside in the rotation direction of the rotating member.

5. The rotor structure according to claim 1, characterized in that, The discharge hole is inclined, and its inclination direction is inclined from the inside to the outside in the direction opposite to the rotation direction of the rotating member.

6. The rotor structure according to claim 1, characterized in that A plurality of first stirring members in the form of sheets are arranged on the outer side wall of the lower end of the rotating member, and the plurality of first stirring members are arranged at intervals along the circumferential direction of the rotating member, and are used to drive the slurry and the grinding medium in the housing to flow upward.

7. The rotor structure according to claim 1, characterized in that, The rotor structure further includes a plurality of second stirring members, wherein: a plurality of the second stirring members are arranged at intervals along the circumferential direction of the rotating member on the outer side wall of the rotating member; and / or a plurality of the second stirring members are arranged at intervals in the vertical direction on the outer side wall of the rotating member; and / or a plurality of the second stirring members are arranged at intervals along the circumferential direction of the rotating member on the inner side wall of the lower end of the rotating member.

8. The rotor structure according to claim 7, wherein, A plurality of first stirring members are arranged on the outer side wall of the lower end of the rotating member; Both the first stirring member and the second stirring member include a stirring body, the stirring body includes a stirring skeleton and a covering part covering the stirring skeleton. The material of the stirring skeleton is a metal material, and the material of the covering part is a ceramic.

9. The rotor structure according to claim 1, wherein The rotating member includes an upper rotor and a lower rotor detachably mounted to the upper rotor.

10. A sand mill, characterized in that, Including the rotor structure according to any one of claims 1 to 9.

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