Micro powder production device

Abstract

The utility model provides a micro-powder production device. The micro-powder production device comprises a raw material tank, a crusher, a material sealing pump and a separator which are sequentially connected in series, the pulverizer comprises a pulverizing cavity, a pulverizing assembly is installed in the pulverizing cavity, a hopper is connected to the bottom of the pulverizing cavity, and a first feeding port and a second feeding port are formed in the upper portion of the side face. The first feeding hole is connected with a raw material tank; the material sealing pump is respectively connected with the separator and the fan; and the separator is also connected with the second feeding hole. According to the device, through cooperative use of the equipment, materials crushed by the crusher are separated in time according to the particle size, and the defect that the uniformity of the particle size of the product materials is affected due to over-crushing of the materials caused by repeated crushing of the materials without separation when the materials are crushed by an existing crusher is overcome.

Description

Technical Field

[0001] The present application relates to the technical field of material crushing, and in particular to a micro powder production device. Background Art

[0002] A pulverizer is a machine that crushes large-sized solid raw materials into required sizes. According to the size of the crushed or crushed materials, pulverizers can be divided into coarse crushers, pulverizers, and ultrafine pulverizers. There are four types of external forces applied to solids during the pulverization process: shearing, impact, rolling, and grinding. Shearing is mainly used in coarse crushing (crushing) and pulverization operations, and is suitable for crushing or pulverizing tough or fibrous materials and large blocks; impact is mainly used in pulverization operations, and is suitable for pulverizing brittle materials; rolling is mainly used in high-fineness pulverization (ultrafine pulverization) operations, and is suitable for ultrafine pulverization of materials of most properties; grinding is mainly used in ultrafine pulverization or ultra-large pulverization equipment, and is suitable for further pulverization after pulverization.

[0003] Micro powder refers to particles with a particle size of less than 65μm. In traditional crushing devices, the material to be crushed is crushed multiple times until the particle size of the material to be crushed meets the preset particle size before the material is output. For example, a micro powder crusher provided by publication number CN205887086U repeatedly crushes the material to the target particle size before outputting it. However, although this crushing method can obtain materials with a preset particle size, a large amount of material will be over-crushed during the repeated crushing process, resulting in a wide distribution of material particle size, affecting the uniformity of the product particle size. Utility Model Content

[0004] The present application provides a micro powder production device, which is used to solve the problem that the existing micro powder production device does not separate and repeatedly crushes the material when producing the micro powder material, resulting in over-crushing of the material, thereby affecting the uniformity of the particle size of the product material.

[0005] The present application provides a micro powder production device, comprising a raw material, a tank crusher, a material sealing pump and a separator connected in series in sequence;

[0006] The pulverizer comprises a pulverizing chamber, a pulverizing assembly is installed in the pulverizing chamber, a hopper is connected to the bottom of the pulverizing chamber, and a first feed inlet and a second feed inlet are opened on the upper side of the side; the first feed inlet is connected to the raw material tank;

[0007] The material sealing pump is connected to the separator and the fan respectively;

[0008] The separator is also connected to the second feed port.

[0009] Optionally, the gas output end of the separator is also connected to a cyclone separator.

[0010] Optionally, the crushing assembly includes a crushing rotor and a crushing stator; the crushing rotor and the crushing stator are matched and meshed;

[0011] The pulverizing stator is installed in the pulverizing chamber through a support ring fixed in the pulverizing chamber;

[0012] The crushing rotor is connected to the motor through a connecting rod;

[0013] A leakage hole is provided at the center of the crushing stator.

[0014] Optionally, the pulverizing stator includes multiple layers of fixed gear rings from the center outward, and adjacent fixed gear rings are separated by stator grinding rings;

[0015] The grinding rotor includes multiple layers of moving gear rings from the center to the outside, and adjacent moving gear rings are separated by rotor grinding rings;

[0016] The thickness of the fixed gear ring matches the width of the rotor grinding ring, and the thickness of the movable gear ring matches the width of the stator grinding ring.

[0017] Optionally, the height of the stator grinding ring increases layer by layer from the center to the outside; the upper surface of the stator grinding ring is an inclined surface, and the inclined surface faces the axis direction of the crushing stator;

[0018] The top shape of the crushing teeth on the moving gear ring matches the upper surface shape of the stator grinding ring.

[0019] Optionally, a shearing blade is fixedly arranged at the center of the pulverizing rotor;

[0020] The shear blades are matched to the size of the leak hole.

[0021] Optionally, the separator includes an input port and an output port that are arranged opposite to each other;

[0022] The bottom of the separator is connected to a coarse material hopper and a fine material hopper respectively;

[0023] A baffle is provided between the coarse material hopper and the fine material hopper;

[0024] The coarse material hopper is connected to the second feed inlet.

[0025] The present application provides a micro powder production device, which uses a pneumatic feeding device formed by a fan and a material sealing pump to feed the material after being crushed by a pulverizer into a separator for separation in real time, and returns the separated material with a particle size larger than the specified size to the pulverizer for re-crushing. The device of the present application uses the above-mentioned equipment in coordination to timely separate the material crushed by the pulverizer according to the particle size, thereby overcoming the disadvantage that the existing pulverizer repeatedly crushes the material without separation when crushing the material, resulting in over-crushing of the material, which affects the uniformity of the particle size of the product material. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A schematic diagram of a micro powder production device provided in one embodiment of the present application;

[0028] Figure 2 A schematic diagram of the structure of a pulverizer provided in one embodiment of the present application;

[0029] Figure 3 A schematic diagram of a micro powder production device provided in another embodiment of the present application;

[0030] Figure 4 A schematic diagram of the structure of a crushing assembly provided in one embodiment of the present application;

[0031] Figure 5 A schematic diagram of the three-dimensional structure of a crushing rotor and a crushing stator provided in one embodiment of the present application;

[0032] Figure 6 A schematic diagram of a top view of a pulverizing stator provided in one embodiment of the present application;

[0033] Figure 7 A bottom view schematic diagram of the structure of a crushing rotor provided in one embodiment of the present application;

[0034] Figure 8 A schematic diagram of the three-dimensional structure of a pulverizing stator provided in one embodiment of the present application;

[0035] Fig. 9 A schematic diagram of the three-dimensional structure of a crushing rotor provided in one embodiment of the present application;

[0036] Fig.10 A schematic diagram of the structure of a separator provided in one embodiment of the present application.

[0037] Description of reference numerals:

[0038] 1. Raw material tank; 2. Crusher; 3. Material sealing pump; 4. Separator; 5. Fan; 6. Cyclone separator; 20. Support ring; 21. Crushing chamber; 22. Crushing assembly; 23. Drop-in hopper; 24. Connecting rod; 25. Motor; 41. Coarse hopper; 42. Fine hopper; 43. Baffle; 201. First feed inlet; 202. Second feed inlet; 221. Crushing rotor; 222. Crushing stator; 223. Shear blade; 401. Input port; 402. Output port; 2201. Leakage hole; 2211. Moving gear ring; 2212. Rotor grinding ring; 2221. Fixed gear ring; 2222. Stator grinding ring. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.

[0040] like Figure 1 and Figure 2 As shown, the present application provides a micro powder production device, comprising a raw material tank 1, a pulverizer 2, a material sealing pump 3 and a separator 4 connected in series in sequence;

[0041] The pulverizer 2 includes a pulverizing chamber 21, a pulverizing assembly 22 is installed in the pulverizing chamber 21, a hopper 23 is connected to the bottom of the pulverizing chamber 21, and a first feed inlet 201 and a second feed inlet 202 are opened on the upper side of the side; the first feed inlet 201 is connected to the raw material tank 1;

[0042] The material sealing pump 3 is connected to the separator 4 and the fan 5 respectively;

[0043] The separator 4 is also connected to the second feed port 202 .

[0044] When the device of the present application is in use, the crushing assembly 22 is opened, and the material to be crushed is input from the first feed port 201 into the crushing chamber 21 of the crusher 2 through the raw material tank 1, and then enters the crushing assembly 22 for crushing.

[0045] The crushed material falls into the hopper 23 and is input into the material sealing pump 3. At the same time, the fan 5 is turned on to blow air to the material sealing pump 3, and the crushed material is input into the separator 4 for separation by wind force.

[0046] The separated coarse material (ie, material with a particle size larger than the target particle size) will be fed back to the pulverizer 2 through the second feed inlet 202 for re-crushing, and the material with a particle size that meets the target size will be output as a qualified product.

[0047] The present application provides a micro powder production device, which uses a pneumatic feeding device formed by a fan 5 and a material sealing pump 3 to feed the material crushed by a pulverizer 2 into a separator 4 for separation in real time, and returns the separated material with a particle size larger than a specified size to the pulverizer 2 for re-pulverization. The device of the present application uses the above-mentioned equipment in coordination to timely separate the material crushed by the pulverizer 2 according to the particle size, thereby overcoming the disadvantages of the existing pulverizer that the material is repeatedly crushed without separation when pulverizing the material, resulting in over-pulverization of the material and affecting the uniformity of the particle size of the product material.

[0048] like Figure 3 As shown, optionally, the gas output end of the separator 4 is also connected to the cyclone separator 6 .

[0049] In the present application, the gas output from the separator 4 may also contain a small amount of powder with finer particle size. The cyclone separator 6 can be set up to separate it and then discharge it. This can reduce material waste and dust pollution. The powder collected by the cyclone separator 6 can be produced as a high-fineness product.

[0050] like Figures 4 to 6 As shown, optionally, the crushing assembly 22 includes a crushing rotor 221 and a crushing stator 222; the crushing rotor 221 and the crushing stator 222 are matched and meshed;

[0051] The pulverizing stator 222 is installed in the pulverizing chamber 21 through a support ring 20 fixed in the pulverizing chamber 21;

[0052] The crushing rotor 221 is connected to the motor 25 via a connecting rod 24;

[0053] A leakage hole 2201 is provided at the center of the pulverizing stator 222 .

[0054] In the present application, the crushing rotor 221 and the crushing stator 222 are used in combination to crush the material by shearing and grinding. In one achievable manner, a material dividing cone is provided on the upper surface of the crushing rotor 221, the lower bottom surface of the material dividing cone is fixed to the upper surface of the crushing rotor 221, and the connecting rod 24 is located at the axial position of the material dividing cone, and the upper end of the material dividing cone is close to the inner top wall of the crushing chamber 21.

[0055] A leakage hole 2201 is provided at the center of the crushing stator 222 , so that the crushed materials can fall through the leakage hole 2201 .

[0056] In the present application, a space is left between the outer periphery of the crushing stator 222 and the inner wall of the crushing chamber 21 so that the material can enter the crushing stator 222. In one feasible manner, a guide ring with an inclined upper surface is installed in the gap between the outer periphery of the crushing stator 222 and the inner wall of the crushing chamber 21, and the inclined surface of the guide ring faces the crushing stator 222 to facilitate the entry of materials.

[0057] like Figures 5 to 9 As shown, optionally, the crushing stator 222 includes multiple layers of fixed gear rings 2221 from the center outward, and adjacent fixed gear rings 2221 are separated by stator grinding rings 2222;

[0058] The grinding rotor 221 includes multiple layers of moving gear rings 2211 from the center to the outside, and adjacent moving gear rings 2211 are separated by rotor grinding rings 2212;

[0059] The thickness of the fixed gear ring 2221 matches the width of the rotor grinding ring 2212 , and the thickness of the movable gear ring 2211 matches the width of the stator grinding ring 2222 .

[0060] In the present application, the gear ring is composed of crushing teeth distributed in a circumferential array, and gaps are left between adjacent crushing teeth so that materials can enter and be crushed. When in use, the material enters the stator grinding ring 2222 along the gaps between the crushing teeth on the fixed gear ring 2221 of the outermost ring of the crushing stator 222. At this time, driven by the motor 25, the moving gear ring 2211 on the high-speed running crushing rotor 221 first shears and crushes a part of the material, and the other part of the material enters the stator grinding ring 2222 through the gaps between the crushing teeth on the moving gear ring 2211. The top of the crushing teeth on the moving gear ring 2211 that matches the surface of the stator grinding ring 2222 grinds and crushes this part of the material. After being sheared and ground by the outer layer moving gear ring 2211 and the fixed gear ring 2221, the material enters the moving gear ring 2211 and the fixed gear ring 2221 through the gaps between the crushing teeth for further shearing and grinding. The crushed material falls into the hopper 23 from the leakage hole 2201 in the center of the crushing stator 222. In the present application, when the crushing rotor 221 and the crushing stator 222 are matched and meshed, the gear ring of the crushing stator 222 is at the outermost layer.

[0061] like Figures 5 to 9 As shown, optionally, the height of the stator grinding ring 2222 increases layer by layer from the center to the outside; the upper surface of the stator grinding ring 2222 is an inclined surface, and the inclined surface faces the axis direction of the crushing stator 222;

[0062] The top shape of the crushing teeth on the movable gear ring 2211 matches the upper surface shape of the stator grinding ring 2222 .

[0063] In the present application, the height of the stator grinding ring 2222 decreases from the periphery to the center, which can facilitate the flow of crushed materials from the outer layer to the inner layer; the upper surface of the stator grinding ring 2222 is set to an inclined surface, which is convenient for the crushed materials to flow down, and the inclined stator grinding ring 2222 cooperates with the top of the crushing teeth on the moving gear ring 2211 to grind the materials. In a feasible manner, grinding protrusions are respectively provided on the upper surface of the stator grinding ring 2222 and the top of the crushing teeth on the moving gear ring 2211.

[0064] like Figure 7 and Fig. 9 As shown, optionally, a shearing blade 223 is fixedly provided at the center of the pulverizing rotor 221;

[0065] The shear blade 223 matches the size of the leak hole 2201 .

[0066] In the present application, the material passing through the gaps between the crushing teeth of the innermost stator gear ring 2221 on the crushing stator 222 is further crushed by the shear blades 223 at the center of the crushing rotor 221 and falls into the hopper 23 from the leakage hole 2201 at the center of the crushing stator 222 .

[0067] like Fig.10 As shown, optionally, the separator 4 includes an input port 401 and an output port 402 that are arranged opposite to each other;

[0068] The bottom of the separator 4 is connected to a coarse material hopper 41 and a fine material hopper 42 respectively;

[0069] A baffle 43 is provided between the coarse material hopper 41 and the fine material hopper 42;

[0070] The coarse material hopper 41 is connected to the second feed port 202 .

[0071] When in use in the present application, the crushed material enters the separator 4. Due to the increase in cross-section, the flow rate of the material will decrease, and the material moves forward in the separator 4. The material with a higher specific gravity has a shorter distance to move forward and will fall into the coarse material hopper 41 and then be returned to the pulverizer 2 from the second feed port 202 for further crushing. Some coarse materials whose particles are not enough to meet the micro-powder fine material standard have a relatively long path to move forward and will fall into the fine material hopper 42. Therefore, a baffle 43 is provided between the coarse material hopper 41 and the fine hopper 42 to intercept this part of the material and make it fall into the coarse material hopper 41 for further crushing; the material with a lower specific gravity has a longer distance to move forward and will fall into the fine material hopper 42 to be output as a crushed qualified product. A screen is also provided near the output port 402 of the separator 4 to intercept the material that fails to fall into the fine material hopper 42 and make it fall into the fine hopper 42 to reduce waste.

[0072] In one achievable manner, a screen is vertically arranged near the output port 402 in the separator 4 to intercept and screen the powder material reaching the target particle size. In another achievable manner, a vibrating screen is arranged obliquely in the separator 4, the vibrating screen is located above the fine material hopper 42 and covers the fine material hopper 42, one side of the vibrating screen abuts against the side of the coarse material hopper 41 near the fine material hopper 42 (in this case, the baffle 43 is not required), and the other side abuts against the separator 4, so that the material input into the separator 4 falls into the coarse material hopper through the inclined vibrating screen under the screening action of the vibrating screen, and the fine material, that is, the material meeting the particle size of the micro powder, falls into the fine material hopper 42 after screening, and the inclination angle of the vibrating screen is 30 to 60 degrees.

[0073] A micro powder production device, the working process of which is as follows:

[0074] When in use, the motor 25 is turned on to drive the crushing rotor 221 in the crushing assembly 22 to rotate, and then the material to be crushed is input from the first feed port 201 into the crushing chamber 21 of the crusher 2 through the raw material tank 1. The material entering the crushing chamber 21 enters the crushing assembly 22 from the space between the outer periphery of the crushing assembly 22 and the inner wall of the crushing chamber 21 under the guidance of the dividing cone.

[0075] The material enters the stator grinding ring 2222 along the gaps between the crushing teeth on the fixed gear ring 2221 of the outermost ring of the crushing stator 222. At this time, the movable gear ring 2211 on the crushing rotor 221 driven by the motor 25, which rotates at a high speed, first shears and crushes a part of the material, and the other part of the material enters the stator grinding ring 2222 through the gaps between the crushing teeth on the movable gear ring 2211. The top of the crushing teeth on the movable gear ring 2211 that matches the surface of the stator grinding ring 2222 grinds and crushes this part of the material. After being sheared and ground by the outer ring movable gear ring 2211 and the fixed gear ring 2221, the material enters the movable gear ring 2211 and the fixed gear ring 2221 through the gaps between the crushing teeth for further shearing, grinding and crushing. The material passing through the gaps between the crushing teeth of the innermost stator gear ring 2221 on the crushing stator 222 is further crushed by the shear blades 223 at the center of the crushing rotor 221 and falls into the hopper 23 from the leakage hole 2201 at the center of the crushing stator 222 .

[0076] The crushed materials falling into the hopper 23 will be input into the material sealing pump 3 again. At the same time, the fan 5 is turned on to blow air to the material sealing pump 3, and the crushed materials are input into the separator 4 for separation by wind power.

[0077] The crushed material enters the separator 4. Due to the enlarged cross-section, the flow rate of the material will decrease, and the material moves forward in the separator 4. The material with a higher specific gravity has a shorter distance to move forward and will fall into the coarse material hopper 41 and then be returned to the pulverizer 2 from the second feed port 202 for further crushing. There are also some coarse materials whose particles are not enough to meet the micro-powder fine material standard. Their forward path is relatively long and they will fall into the fine material hopper 42. Therefore, a baffle 43 is provided between the coarse material hopper 41 and the fine material hopper 42 to intercept this part of the material and make it fall into the coarse material hopper 41 for further crushing; the material with a lower specific gravity has a longer distance to move forward and will fall into the fine material hopper 42 to be output as a crushed qualified product. A screen is also provided near the output port 402 of the separator 4 to intercept the material that fails to fall into the fine material hopper 42 and make it fall into the fine material hopper 42 to reduce waste.

[0078] The gas output from the separator 4 may also contain a small amount of powder with finer particle size, so a cyclone separator 6 is connected to the output port 402 to separate it before discharging it. This can reduce material waste and dust pollution. The powder collected by the cyclone separator 6 can be produced as a high-fineness product.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A micro powder production device, characterized in that: It comprises a raw material tank (1), a pulverizer (2), a material sealing pump (3) and a separator (4) which are sequentially connected in series; The pulverizer (2) comprises a pulverizing chamber (21), a crushing assembly (22) is installed in the pulverizing chamber (21), a hopper (23) is connected to the bottom of the pulverizing chamber (21), and a first feed inlet (201) and a second feed inlet (202) are provided on the upper side of the side; the first feed inlet (201) is connected to the raw material tank (1); The material sealing pump (3) is connected to the separator (4) and the fan (5) respectively; The separator (4) is also connected to the second feed port (202); The crushing assembly (22) comprises a crushing rotor (221) and a crushing stator (222); the crushing rotor (221) and the crushing stator (222) are matched and meshed; The pulverizing stator (222) is installed in the pulverizing chamber (21) via a support ring (20) fixed in the pulverizing chamber (21); The pulverizing rotor (221) is connected to the motor (25) via a connecting rod (24); A leakage hole (2201) is provided at the center of the pulverizing stator (222); A shearing blade (223) is fixedly arranged at the center of the pulverizing rotor (221); The shear blade (223) matches the size of the leakage hole (2201).

2. The micro powder production device according to claim 1, characterized in that: The gas output end of the separator (4) is also connected to the cyclone separator (6).

3. The micro powder production device according to claim 1, characterized in that: The pulverizing stator (222) includes multiple layers of fixed gear rings (2221) from the center outward, and adjacent fixed gear rings (2221) are separated by stator grinding rings (2222); The grinding rotor (221) includes multiple layers of moving gear rings (2211) from the center outward, and adjacent moving gear rings (2211) are separated by rotor grinding rings (2212); The thickness of the fixed gear ring (2221) matches the width of the rotor grinding ring (2212), and the thickness of the movable gear ring (2211) matches the width of the stator grinding ring (2222).

4. The micro powder production device according to claim 3, characterized in that: The height of the stator grinding ring (2222) increases layer by layer from the center to the outside; the upper surface of the stator grinding ring (2222) is an inclined surface, and the inclined surface faces the axial direction of the grinding stator (222); The shape of the top end of the crushing teeth on the movable gear ring (2211) matches the shape of the upper surface of the stator grinding ring (2222).

5. The micro powder production device according to any one of claims 1 to 4, characterized in that: The separator (4) comprises an input port (401) and an output port (402) which are arranged opposite to each other; The bottom of the separator (4) is respectively connected to a coarse material hopper (41) and a fine material hopper (42); A baffle (43) is provided between the coarse material hopper (41) and the fine material hopper (42); The coarse material hopper (41) is connected to the second material feed port (202).

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