Feeding structure and sand mill

Abstract

The utility model discloses a feeding structure and sand mill relates to grinding technical field, wherein the feeding structure includes the inner casing, the inner casing forms the feeding channel, the inlet of the feeding channel is arranged on the bottom wall of the inner casing, the outlet of the feeding channel is arranged on the side wall of the inner casing, so that the inlet of the feeding channel is arranged on the bottom wall of the inner casing, the outlet of the feeding channel is arranged on the side wall of the inner casing, and the outlet of the feeding channel is arranged on the side wall of the inner casing. And an outlet of the feeding channel is formed in the side wall of the inner shell, so that slurry in the feeding channel can flow into the outer shell in the horizontal direction, and the situation that the feeding port is blocked by a grinding medium in the outer shell is avoided.

Description

Technical Field

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

[0002] Sand mill, also known as bead mill, is mainly used for wet grinding of chemical liquid products. It has the advantages of high production efficiency, strong continuity, low cost and high product fineness. It is widely used in cement, silicate products, new building materials, refractory materials, fertilizers, black and non-ferrous metal beneficiation, glass ceramics, coatings / inks / dyes / paints, new materials, pesticides, food additives and other production industries. At present, the grinding principle of the sand mill is to use the high-speed movement of the rotor to make the grinding medium generate shear force, collision force and crushing force, so as to disperse, crush, grind, depolymerize, homogenize and emulsify the solid particle slurry in the fluid. Most of the existing vertical sand mills have the feed port set above the sand mill and the discharge port set below the sand mill. This setting method can easily cause the grinding medium to leak out from the discharge port, resulting in low slurry processing accuracy and inability to guarantee the sand milling quality. Utility Model Content

[0003] In response to the above problems, the inventor has designed a sand mill, the discharge port of which is arranged above the feed port, so that the slurry can enter from the bottom and exit from the top, so as to prevent the grinding medium from overflowing. However, this arrangement makes it easy for the grinding medium to accumulate at the feed port and block the feed port. Therefore, how to prevent the grinding medium from blocking the feed port is an urgent problem to be solved.

[0004] The main purpose of the utility model is to provide a feeding structure and a sand mill, aiming to solve the problem of how to prevent grinding media from clogging the feeding port.

[0005] To achieve the above objectives, the utility model proposes a feeding structure, which includes an inner shell, wherein the inner shell is formed with a feeding channel, wherein the inlet of the feeding channel is arranged on the bottom wall of the inner shell, and the outlet is arranged on the side wall of the inner shell.

[0006] In one embodiment, the feed channel includes a first feed channel and a second feed channel connected to the first feed channel, and the first feed channel and the second feed channel are both extended in the up-down direction;

[0007] Wherein, the inlet of the feed channel includes the inlet of the first feed channel, and the outlet includes the outlet of the second feed channel.

[0008] In one embodiment, the feed structure further comprises a feed pipe disposed in the inner shell, and the feed pipe and the inner shell together define a flow guide channel:

[0009] Wherein, the first feed flow channel includes the inner tube of the feed pipe, and the second feed flow channel includes the guide flow channel.

[0010] In one embodiment, the feed structure further includes a sleeve disposed between the feed pipe and the inner shell, so that the flow guide channel forms a first annular channel and a second annular channel located inside the first annular channel, and the first annular channel is used to connect to a cooling water pipeline;

[0011] Wherein, the second feed flow channel includes the second annular flow channel.

[0012] In one embodiment, the feed structure further includes a drain pipe disposed at the outlet of the first annular flow channel, and an inlet of the drain pipe extends upward to an upper end of the first annular flow channel.

[0013] In one embodiment, the feed structure further comprises a plurality of annular baffles arranged in the first annular flow channel, and the plurality of annular baffles are arranged at intervals in the vertical direction.

[0014] In one embodiment, two adjacent annular partitions are arranged in a staggered manner.

[0015] In one embodiment, a protective layer is provided on the outer side of the inner shell.

[0016] In one embodiment, an outer side wall of the inner shell is provided with a stirring protrusion.

[0017] The utility model also provides a sand mill, comprising the above-mentioned feeding structure.

[0018] In the technical solution of the utility model, the inlet of the feed channel is arranged on the bottom wall of the inner shell so as to be connected to the feed port, and the outlet of the feed channel is arranged on the side wall of the inner shell so that the slurry in the feed channel can flow horizontally into the outer shell to prevent the grinding medium in the outer shell from clogging the feed port. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 A structural schematic diagram of an embodiment of a sand mill provided by the utility model;

[0021] Figure 2A structural schematic diagram of another embodiment of the sand mill provided by the utility model;

[0022] Figure 3 A structural schematic diagram of another embodiment of the sand mill provided by the utility model;

[0023] Figure 4 A structural schematic diagram of an embodiment of a feeding structure of a sand mill provided by the utility model;

[0024] Figure 5 A structural schematic diagram of another embodiment of the feeding structure of the sand mill provided by the utility model;

[0025] Figure 6 A schematic structural diagram of an embodiment of a rotor structure of a sand mill provided by the utility model;

[0026] Figure 7 A schematic structural diagram of another embodiment of the rotor structure of the sand mill provided by the utility model;

[0027] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure along the AA direction;

[0028] Fig. 9 for Figure 7 A schematic diagram of the cross-sectional structure along the BB direction;

[0029] Fig.10 for Figure 7 Schematic diagram of the cross-sectional structure along CC direction;

[0030] Fig.11 A structural schematic diagram of an embodiment of a separation structure of a sand mill provided by the utility model;

[0031] Fig.12 A structural schematic diagram of another embodiment of the feeding structure of the sand mill provided by the utility model;

[0032] Fig.13 A structural schematic diagram of another embodiment of the feeding structure of the sand mill provided by the utility model;

[0033] Fig.14 The present invention is a schematic structural diagram of another embodiment of the feeding structure of the sand mill provided by the present invention.

[0034] Description of Figure Numbers:

[0035] 100. Sand mill; 1. Shell; 11. Feed port; 12. Discharge port; 2. Feed structure; 21. Inner shell; 22. Feed channel; 221. First feed channel; 222. Second feed channel; 23. Feed pipe; 231. Guide channel; 2311. First annular channel; 2312. Second annular channel; 24. Casing; 25. Drain pipe; 26. Annular partition; 27. Protective layer; 28. Agitating convex part; 3. Rotor structure; 31. Rotating member; 311. Rotating shaft; 312. Rotating part; 3121. Grinding channel; 3122, feed hole; 3123, discharge hole; 313, upper rotor; 314, lower rotor; 32, driving member; 33, first agitating member; 34, second agitating member; 4, separation structure; 41, rotating member; 411, main shaft; 412, rotating body; 413, discharge channel; 4131, first discharge flow channel; 4132, second discharge flow channel; 42, separation member; 421, blade part; 422, guide section; 43, anti-lift part; 5, frame; 6, operating platform; 61, guardrail; 62, ladder.

[0036] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0040] Sand mill, also known as bead mill, is mainly used for wet grinding of chemical liquid products. It has the advantages of high production efficiency, strong continuity, low cost and high product fineness. It is widely used in cement, silicate products, new building materials, refractory materials, fertilizers, black and non-ferrous metal beneficiation, glass ceramics, coatings / inks / dyes / paints, new materials, pesticides, food additives and other production industries. At present, the grinding principle of the sand mill is to use the high-speed movement of the rotor to make the grinding medium generate shear force, collision force and crushing force, so as to disperse, crush, grind, depolymerize, homogenize and emulsify the solid particle slurry in the fluid. Most of the existing vertical sand mills have the feed port set above the sand mill and the discharge port set below the sand mill. This setting method can easily cause the grinding medium to leak out from the discharge port, resulting in low slurry processing accuracy and inability to guarantee the sand milling quality.

[0041] In view of the above problems, the inventors have designed a sand mill, the discharge port of which is arranged above the feed port so that the slurry can enter from the bottom and exit from the top to prevent the grinding medium from overflowing. However, this arrangement makes it easy for the grinding medium to accumulate at the feed port and easily block the feed port.

[0042] Based on this, the utility model proposes a feeding structure for a sand mill. It aims to solve the problem of how to prevent the grinding medium from clogging the feeding port. Among them, Figures 1 to 14 The utility model is a schematic structural diagram of a sand mill.

[0043] See also Figures 1 to 3In one embodiment of the utility model, the sand mill 100 includes a shell 1, a rotor structure 3, a feed structure 2 and a separation structure 4, the shell 1 has a feed port 11 and a discharge port 12 distributed in the up and down directions, and the feed port 11 is arranged below the discharge port 12, the rotor structure 3 is arranged in the shell 1, for grinding the slurry in the shell 1, the feed structure 2 is arranged in the rotor structure 3, and is arranged corresponding to the feed port 11, for conveying the slurry along the first horizontal direction, and the separation structure 4 is arranged in the shell 1, and is arranged corresponding to the discharge port 12, for separating the slurry from the grinding medium.

[0044] The technical solution of the utility model is to set the shell 1 so as to install the rotor structure 3, the feed structure 2 and the separation structure 4, and to enable the slurry to flow in the up-down direction by setting the feed port 11 and the discharge port 12 in the up-down direction, to change the conveying direction of the slurry by setting the feed structure 2 at the feed port 11, so as to convey the slurry horizontally into the shell 1, to set the rotor structure 3 in the shell 1 so as to stir the grinding medium in the shell 1 so that the grinding medium can grind the slurry, to set the separation structure 4 at the discharge port 12 so as to separate the slurry from the grinding medium so as to prevent the grinding medium from flowing out of the shell 1 with the slurry, and to set the feed port 11 below the discharge port 12 so as to enable the slurry to flow from the bottom to the top, so as to reduce the probability of the grinding medium flowing out with the slurry, thereby solving the problem that the grinding medium of the sand mill 100 easily flows out of the discharge port with the slurry.

[0045] It should be noted that the first horizontal direction can be a direction parallel to the horizontal direction, or a direction having a certain angle with the horizontal direction, as long as it is oriented toward the horizontal direction, and the present invention does not limit this. For example, the first horizontal direction can be left-right, front-back, or a direction that is inclined upward or downward from the inside to the outside.

[0046] In one embodiment of the present invention, please refer to Figure 4 and Figure 5 The feed structure 2 includes an inner shell 21, and the inner shell 21 is formed with a feed channel 22. The inlet of the feed 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 feed channel 22 is arranged on the bottom wall of the inner shell 21 so as to be connected to the feed port 11, and the outlet of the feed channel 22 is arranged on the side wall of the inner shell 21 so that the slurry in the feed channel 22 can flow into the outer shell 1 in a horizontal direction to prevent the grinding medium in the outer shell 1 from clogging the feed port 11.

[0047] Furthermore, a plurality of outlets of the feed channel 22 are arranged at intervals along the circumference of the inner shell 21 . Thus, by providing a plurality of outlets, the slurry can quickly flow out of the feed channel 22 , thereby helping to increase the feeding speed of the feed structure 2 .

[0048] Further, the feed channel 22 includes a first feed channel 221 and a second feed channel 222 connected to the first feed channel 221, and the first feed channel 221 and the second feed channel 222 are both extended in the up and down directions, wherein the inlet of the feed channel 22 includes the inlet of the first feed channel 221, and the outlet includes the outlet of the second feed channel 222. In this way, by setting the first feed channel 221 and the second feed channel 222, a high point is formed in the inner shell 21 to prevent the grinding medium in the outer shell 1 from entering the feed channel 22, thereby helping to prevent the grinding medium from clogging the feed channel 22.

[0049] It can be understood that there are multiple types of feed channels 22. In one embodiment, the feed channel 22 includes a third feed channel extending vertically and a fourth feed channel extending horizontally. The fourth feed channel is connected to the third feed channel so that the slurry first flows vertically and then horizontally, so that the slurry can flow horizontally into the shell and into the fourth feed flow.

[0050] Furthermore, the feed structure 2 also includes a feed pipe 23 arranged in the inner shell 21, and the feed pipe 23 and the inner shell 21 jointly define a guide channel 231, wherein the first feed channel 221 includes an inner tube of the feed pipe 23, and the second feed channel 222 includes the guide channel 231. In this way, by arranging the feed pipe 23 in the inner shell 21, the first feed channel 221 and the second feed channel 222 are respectively formed on the inner and outer sides of the feed pipe 23, so that the second feed channel 222 can be arranged around the outer side of the first feed channel 221, so that the first feed channel 221 and the second feed flow can be evenly distributed in the outer shell 1, which can not only make full use of the space of the inner shell 21, but also facilitate the subsequent cooling of the feed channel 22.

[0051] It can be understood that there are many ways to form the first feed channel 221 and the second feed channel 222. In another embodiment, the feed structure 2 includes a feed pipe 23, and the feed pipe 23 includes a first pipe segment and a second pipe segment that are interconnected. The first pipe segment and the second pipe segment are both extended in the up and down directions. The feed channel 22 includes the first pipe segment and the second pipe segment. The inlet of the feed channel 22 includes the inlet of the first pipe segment, and the outlet of the feed channel 22 includes the outlet of the second pipe segment. In this way, the first feed channel 221 and the second feed flow are formed by bending the feed pipe 23.

[0052] In one embodiment of the utility model, the feed structure 2 also includes a sleeve 24 arranged between the feed pipe 23 and the inner shell 21, so that the guide channel 231 forms a first annular channel 2311 and a second annular channel 2312 located on the inner side of the first annular channel 2311, and the first annular channel 2311 is used to connect to the cooling water pipeline, wherein the second feed channel 222 includes the second annular channel 2312, so that the sleeve 24 is arranged to form the first annular channel 2311 with the inner shell 21, and the second annular channel 2312 with the feed pipe 23, so that the first annular channel 2311 for cooling water to flow is formed on the outer side of the feed channel 22, so as to cool the feed channel 22, thereby helping to reduce the temperature of the inner shell 21.

[0053] Since the feed structure 2 is arranged in the rotor structure 3, the inlet and outlet of the first annular flow channel 2311 can only be arranged at the bottom of the outer shell 1, resulting in that 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. Therefore, in this embodiment, please refer to Figure 5 The feed structure 2 also includes a drain pipe 25 arranged at the outlet of the first annular flow channel 2311, and the inlet of the drain pipe 25 extends upward to the upper end of the first annular flow channel 2311. In this way, by setting the drain pipe 25, the cooling water in the first annular flow channel 2311 can flow upward, preventing the cooling water from flowing only at the lower end of the inner shell 21, thereby helping to improve the heat dissipation effect of the feed structure 2.

[0054] In one embodiment of the utility model, the feed structure 2 further includes a plurality of annular baffles 26 disposed in the first annular flow channel 2311, and the plurality of annular baffles 26 are disposed at intervals in the vertical direction, so that the flow path of the cooling water is defined in the first annular flow channel 2311 by disposing the plurality of annular baffles 26, so that the cooling water can flow along the preset path, so as to improve the heat dissipation effect of the feed structure 2. Furthermore, two adjacent annular baffles 26 are disposed in a staggered manner, so that the cooling water can bend back and forth and flow upward in the first annular flow channel 2311, thereby increasing the flow range of the cooling water and improving the heat dissipation effect of the cooling water.

[0055] In one embodiment of the utility model, a protective layer 27 is provided on the outer side of the inner shell 21. Since the feed structure 2 is arranged in the rotor structure 3, the grinding medium will hit the inner shell 21, so the protective layer 27 is provided to protect the inner shell 21. Further, the material of the protective layer 27 is a flexible material. In this way, the use of a flexible material to absorb the impact force of the grinding medium can reduce the noise of the sand mill 100 and protect the inner shell 21. It can be understood that there are many types of flexible materials, for example, rubber, polyurethane, etc., and the utility model does not limit this.

[0056] In one embodiment of the utility model, the outer wall of the inner shell 21 is provided with a stirring protrusion 28. Thus, by providing the stirring protrusion 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, thereby helping to improve the grinding quality of the sand mill 100.

[0057] In one embodiment of the present invention, please refer to Figure 3 , Figure 6 and Figure 7The rotor structure 3 includes a rotating member 31 and a driving member 32. The rotating member 31 is rotatably mounted to the housing 1 around an axis extending in the vertical direction. The rotating member 31 is provided with a grinding channel 3121. The upper end of the grinding channel 3121 is provided with a feed hole 3122, and the lower end of the grinding channel 3121 is provided with a discharge hole 3123. The driving member 32 is provided 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 setting the rotating member 31 to drive the driving member 32 to rotate, by setting the The feed hole 3122 is provided so that the slurry and the grinding medium can flow into the grinding channel 3121 from the upper end of the rotating member 31. The discharge hole 3123 is provided so that the slurry and the grinding medium can flow out of the grinding channel 3121 from the lower end of the rotating member 31. The driving member 32 is provided so as to drive the slurry and the grinding medium in the grinding channel 3121 to flow downward, so that the slurry and the grinding medium can circulate on the inner and outer sides of the rotating member 31, which can effectively increase the grinding time of the slurry, thereby helping to improve the grinding quality of the sand mill 100.

[0058] In one embodiment of the present invention, the rotating member 31 includes a rotating shaft 311 extending in the vertical direction, and a rotating portion 312 mounted to the rotating shaft 311, wherein the feed hole 3122 and the discharge hole 3123 are provided in the rotating portion 312, so that by providing the rotating shaft 311, it is convenient to install the rotating portion 312, and it is convenient to install the driving portion later, and it is also convenient to form the grinding channel 3121 in the rotating portion 312. It is understandable that the rotating portion 312 can be directly mounted on the rotating shaft 311, or it can be installed on the rotating shaft 311 through other structural intervals, etc., and the present invention does not limit this.

[0059] In one embodiment of the present invention, please refer to Figure 7 and Fig. 9 The driving member 32 includes an impeller disposed on the rotating shaft 311, and a plurality of the impellers are arranged at intervals along the circumference of the rotating shaft 311. In this way, the impellers are arranged to drive the slurry and grinding media in the grinding channel 3121 to flow downward. Of course, in other embodiments, the driving member 32 may also be a driving plate, etc., which is not limited in the present invention. Furthermore, the impeller may also be arranged on the inner wall surface of the rotating portion 312, which is not limited in the present invention.

[0060] Furthermore, there are multiple ways of connecting the impeller to the rotating shaft 311. The impeller can be riveted to the rotating shaft 311 or screwed to the rotating shaft 311, etc. The utility model does not limit this. Specifically, in this embodiment, the impeller can be detachably installed on the rotating shaft 311 for maintenance or replacement.

[0061] In one embodiment of the present invention, please refer to Figure 6 , Figure 7 and Fig. 9 The feed hole 3122 is inclined, and its inclination direction is from the inside to the outside toward the rotation direction of the rotating member 31, so that 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 flow smoothly into the grinding channel 3121, so as to flow downward under the drive of the driving member 32.

[0062] In one embodiment of the present invention, please refer to Figure 6 , Figure 7 and Fig.10 The discharge hole 3123 is inclined, and its inclination direction is from the inside to the outside toward the rotation direction away from the rotating member 31, so that 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 to prevent the slurry and the grinding medium from gathering in the grinding channel 3121.

[0063] In one embodiment of the utility model, please refer to Figure 6 The outer side wall of the lower end of the rotating member 31 is provided with a plurality of first stirring members 33 arranged in a sheet shape. The plurality of first stirring members 33 are arranged at intervals along the circumference of the rotating member 31 to drive the slurry in the housing 1 to flow upward. In this way, by providing a plurality of first stirring members 33, when the rotating member 31 rotates, an upward driving force can be generated to drive the slurry and grinding medium outside the rotating member 31 to flow upward, so that the slurry and grinding medium can circulate inside and outside the rotating member 31, increase the grinding time of the slurry, and improve the grinding quality. Furthermore, the first stirring member 33 is arranged at an angle so that the first stirring member 33 can generate an upward driving force to drive the slurry and grinding medium to flow upward.

[0064] It can be understood that there are various ways of connecting 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 can be detachably installed on the rotating member 31, etc. The utility model does not limit this. Furthermore, 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.

[0065] In one embodiment of the utility model, the rotor structure 3 also includes a plurality of second agitating members 34, which are arranged at intervals along the circumference of the rotating member 31 on the outer wall of the rotating member 31. In this way, when the rotating member 31 rotates, the slurry on the outside of the rotating member 31 is stirred, thereby helping to improve the grinding efficiency of the rotor structure 3.

[0066] In one embodiment of the utility model, the rotor structure 3 also includes a plurality of second agitating members 34, which are arranged at intervals along the upper and lower directions on the outer wall of the rotating member 31. In this way, when the rotating member 31 rotates, the slurry on the outer side of the rotating member 31 is stirred, thereby helping to improve the grinding efficiency of the rotor structure 3.

[0067] In one embodiment of the utility model, please refer to Figure 8 The rotor structure 3 also includes a plurality of second stirring members 34, which are arranged at intervals along the circumference 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, thereby helping to improve the grinding efficiency of the rotor structure 3.

[0068] It is understandable that, since the upper end of the rotating member 31 is provided with a driving member 32, if the second stirring member 34 is provided on the inner side wall of the upper end of the rotating member 31, it will interfere with the flow of slurry in the rotating member 31. Therefore, the two stirring members are provided on the inner side wall of the lower end of the rotating member 31 to avoid affecting the flow of slurry in the rotating member 31. In particular, the second stirring member 34 has a variety of shapes, for example, it can be circular, polygonal, etc., and the utility model does not limit this. Furthermore, there are many ways to connect the second stirring member 34 to the rotating member 31. The second stirring member 34 can be fixedly installed on the rotating member 31, or it can be detachably installed on the rotating member 31, etc., and the utility model does not limit this.

[0069] It should be noted that the above three related technical features: "Multiple second agitating members 34 are arranged on the outer wall of the rotating member 31 at intervals along the circumference of the rotating member 31", "Multiple second agitating members 34 are arranged on the outer wall of the rotating member 31 at intervals along the up and down directions", and "Multiple second agitating members 34 are arranged on the inner wall of the lower end of the rotating member 31 at intervals along the circumference of the rotating member 31" can be set one by one, two by two, or at the same time. Obviously, setting them at the same time has a better effect.

[0070] In one embodiment of the present invention, the first agitating member 33 and the second agitating member 34 both include a stirring body, and the stirring body includes a stirring skeleton and a covering portion covering the stirring skeleton, the stirring skeleton is made of metal, and the covering portion is made of ceramic. In this way, by providing the stirring skeleton with metal material, the strength of the agitating body is increased, and by providing the covering portion with ceramic material, the wear resistance of the agitating body can be increased and the resistance of the agitating body can be reduced.

[0071] In one embodiment of the present invention, the rotating member 31 includes an upper rotor 313 and a lower rotor 314 detachably mounted on the upper rotor 313. Thus, the upper rotor 313 and the lower rotor 314 are separately arranged. On the one hand, the size of the rotating member 31 can be reduced, which helps to reduce the difficulty of manufacturing the rotating member 31. On the other hand, the lower rotor 314 can be removed separately so as to be installed on the feeding structure 2, thereby helping to reduce the difficulty of assembling the sand mill 100.

[0072] In one embodiment of the present invention, 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 on the discharge port 12 around an axis extending in the up-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 setting the rotating member 41, it is convenient to set the discharge channel 413 so as to discharge the slurry in the housing 1, and it can also drive the separating member 42 to rotate. At the same time, by setting 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 with the slurry.

[0073] In one embodiment of the utility model, the rotating member 41 includes a main shaft 411 and a rotating body 412, the main shaft 411 is rotatably installed on the discharge port 12 around an axis extending in the up-down direction, the main shaft 411 is provided with a first discharge 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 channel 4132 extending radially along the main shaft 411, the second discharge channel 4132 is connected to the first discharge channel 4131, wherein the discharge channel 413 includes the first discharge channel 4131 and the second discharge channel 4132, the separator 42 is arranged in the second discharge channel 4132, in this way, by arranging the main shaft 411 and the rotating body 412, so as to respectively arrange the first discharge channel 4131 and the second discharge channel 4132, the manufacturing difficulty of the discharge channel 413 is reduced.

[0074] In one embodiment of the present invention, the separator 42 includes a plurality of blades 421 disposed in the second discharge channel 4132, and the plurality of blades 421 are disposed at intervals along the circumference of the main shaft 411. Thus, by disposing a plurality of blades 421, when the rotating body 412 rotates, the grinding medium in the second discharge channel 4132 is thrown out of the rotating body 412, so that the grinding medium is separated from the slurry. Furthermore, there are multiple ways of connecting the blades 421 to the rotating body 412. The blades 421 can be installed on the rotating body 412 by screws or bolts, etc., and the present invention does not limit this.

[0075] In one embodiment of the present invention, please refer to Fig.13 The two adjacent blade portions 421 define a guide section 422. In the cross section along the main shaft 411, the guide section 422 is inclined, and its inclination direction is from the inside to the outside toward the rotation direction away from the main shaft 411. The second discharge channel 4132 includes the guide section 422, so that the inclination direction of the guide section 422 is opposite to the rotation direction of the rotating body 412, so that the grinding medium can be thrown out of the guide section 422 under the action of centrifugal force to separate the slurry and the grinding medium.

[0076] In one embodiment of the present invention, please refer to Fig.13The two adjacent blade portions 421 define a guide section 422. On the cross section along the main axis 411, the width of the guide section 422 is gradually increased from the inside to the outside, so as to increase the resistance of the grinding medium to flow toward the middle of the rotating body 412, which is beneficial to delay the flow of the grinding medium and reduce the flow speed of the grinding medium, so that the grinding medium can be thrown out of the second discharge channel 413.

[0077] In one embodiment of the present invention, please refer to Fig.13 Two adjacent blade portions 421 define a guide section 422 , and the guide section 422 is arranged in an arc shape to reduce the resistance of the grinding medium flowing toward the periphery of the rotating body 412 , so that the grinding medium can be thrown out of the second discharge channel 413 .

[0078] It should be noted that the above three related technical features: "the guide section 422 is inclined", "on the cross section along the main axis 411, the width of the guide section 422 is gradually increased from the inside to the outside", and "the guide section 422 is arc-shaped" can be set one by one, two by two, or at the same time. Obviously, setting them at the same time will have a better effect.

[0079] In one embodiment of the utility model, two separation elements 42 are provided, and the two separation elements 42 are arranged at intervals along the radial direction of the main shaft 411. In this way, by providing two separation elements 42, the slurry in the second discharge channel 4132 can be subjected to secondary separation, thereby helping to improve the separation effect of the separation structure 4.

[0080] In one embodiment of the present invention, please refer to Fig.13 The two adjacent blade portions 421 define a guide section 422. The two guide sections 422 of the two separation members 42 include a first guide section 422 and a second guide section 422 located inside the first guide section 422. The width of the first guide section 422 is greater than the width of the second guide section 422, so as to increase the resistance of the grinding medium to flow toward the middle of the rotating body 412, which is beneficial to delaying the flow of the grinding medium and reducing the flow speed of the grinding medium, so that the grinding medium can be thrown out of the second discharge channel 413.

[0081] In one embodiment of the utility model, the two guide sections 422 of the two separation members 42 include a first guide section 422 and a second guide section 422 located inside the first guide section 422. The first guide section 422 and the second guide section 422 are staggered so that the outlet of the first guide section 422 and the inlet of the second guide section 422 can be staggered to prevent the first guide section 422 and the second guide section 422 from influencing each other, so that the first guide section 422 and the second guide section 422 can be separated independently.

[0082] It should be noted that the above three related technical features: "the width of the first guide segment 422 is greater than the width of the second guide segment 422", "the first guide segment 422 and the second guide segment 422 are staggered", can be set one by one or at the same time. Obviously, setting them at the same time will have a better effect.

[0083] In one embodiment of the present invention, there are multiple ways of connecting the main shaft 411 and the rotating body 412. The rotating body 412 can be riveted to the main shaft 411 or screwed to the main shaft 411, etc. The present invention does not limit this. Specifically, in this embodiment, the rotating body 412 can be detachably installed on the main shaft 411. In this way, a detachable connection is adopted to facilitate the loading and unloading of the rotating body 412, thereby facilitating maintenance or replacement.

[0084] It should be noted that there are many detachable connection methods, for example, it can be a screw connection method, it can also be a snap connection method, etc., and the present utility model does not limit this.

[0085] In one embodiment of the present invention, please refer to Fig.11 and Fig.14 The separation structure 4 also includes a plurality of anti-lift portions 43 installed on the outer peripheral side of the rotating member 41, and the plurality of anti-lift portions 43 are arranged at intervals along the circumference of the rotating member 41. In this way, by arranging the plurality of anti-lift portions 43, the slurry and the grinding medium are blocked from flowing upward into the separation structure 4, so as to prevent the grinding medium from gathering above the rotor structure 3, thereby reducing the possibility of the grinding medium flowing out of the housing 1.

[0086] In one embodiment of the present invention, the anti-lift portion 43 is inclined to drive the grinding medium to flow downward. In this way, the anti-lift portion 43 is inclined to prevent the portion from generating a downward driving force when the rotating member 41 rotates, so as to drive the grinding medium to flow back downward and prevent the grinding medium from overflowing.

[0087] In an embodiment of the present invention, the sand grinder 100 further comprises a frame 5, and the housing 1 is mounted on the frame 5, so that the housing 1 can be placed upright by arranging the frame 5.

[0088] In one embodiment of the utility model, the sand mill 100 further includes an operating platform 6 disposed on the frame 5, and the operating platform 6 is disposed above the housing 1. Thus, by providing the operating platform 6, a worker can operate or overhaul the sand mill 100. Further, the sand mill 100 further includes a guardrail 61 disposed on the operating platform 6 to prevent a person from falling, thereby helping to improve the safety of the sand mill 100. Further, the sand mill 100 further includes a ladder 62 disposed on the frame 5 to facilitate personnel to get on and off the operating platform 6.

[0089] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A feeding structure for a sand mill, characterized in that: The feed structure comprises an inner shell, the inner shell is formed with a feed channel, the inlet of the feed channel is arranged on the bottom wall of the inner shell, and the outlet is arranged on the side wall of the inner shell; The feed channel comprises a first feed channel and a second feed channel connected to the first feed channel, and the first feed channel and the second feed channel are both extended in the up-down direction; Wherein, the inlet of the feed channel includes the inlet of the first feed channel, and the outlet includes the outlet of the second feed channel.

2. The feeding structure according to claim 1, characterized in that: The feed structure further includes a feed pipe disposed in the inner shell, and the feed pipe and the inner shell together define a flow guide channel: Wherein, the first feed flow channel includes the inner tube of the feed pipe, and the second feed flow channel includes the guide flow channel.

3. The feeding structure according to claim 2, characterized in that: The feed structure further includes a sleeve disposed between the feed pipe and the inner shell, so that the flow guide channel forms a first annular channel and a second annular channel located inside the first annular channel, wherein the first annular channel is used to connect to a cooling water pipeline; Wherein, the second feed flow channel includes the second annular flow channel.

4. The feeding structure according to claim 3, characterized in that: The feed structure further includes a drain pipe disposed at the outlet of the first annular flow channel, and an inlet of the drain pipe extends upward to the upper end of the first annular flow channel.

5. The feeding structure according to claim 3, characterized in that: The feed structure further comprises a plurality of annular baffles arranged in the first annular flow channel, wherein the plurality of annular baffles are arranged at intervals in the vertical direction.

6. The feeding structure according to claim 5, characterized in that: Two adjacent annular partitions are arranged in a staggered manner.

7. The feeding structure according to claim 1, characterized in that: A protective layer is arranged on the outer side of the inner shell.

8. The feeding structure according to claim 1, characterized in that: The outer side wall of the inner shell is provided with a stirring convex portion.

9. A sand mill, characterized in that: Comprising the feeding structure as described in any one of claims 1 to 8.

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