Graded discharging sand mill

Abstract

The utility model discloses a graded discharge sand mill, which comprises a sand mill body and a powder box, a feed inlet is arranged on a barrel of the sand mill body, and a transfer pump and a suction pump are respectively arranged on the barrel. A rotatable centrifugal separation barrel is installed in the powder box, a feeding end and a discharging end are arranged on the upper side and the lower side of the centrifugal separation barrel respectively, the feeding end extends out of the powder box, and an outlet of the material pumping pump is communicated with the feeding end of the centrifugal separation barrel through a material pumping pipe. The utility model relates to the technical field of sand mills, in particular to a graded discharging sand mill, which is provided with a dynamic centrifugal separation mechanism, materials meeting granularity requirements are thrown out in the centrifugal separation mechanism in a high-speed rotation manner, and large-particle materials are left in a separation barrel and flow back into the sand mill again. After being processed by the sand mill, the materials flow into the separation barrel again to be screened until the requirements are completely met.

Description

Technical Field

[0001] The utility model relates to the technical field of sand mills, and specifically relates to a sand mill with graded discharge. Background Art

[0002] A sand mill is a wet grinding device used for grinding materials, and is widely used in multiple industrial fields such as paints, ceramic inks, foods, and drugs. In recent years, it has also been introduced into the synthesis process of lithium-ion battery materials to control the primary particle size of powder materials.

[0003] For example, a sand mill with graded discharge disclosed in Chinese Patent CN 214811380 U grades the particle size of materials by setting a coarse material chamber and a fine material chamber and using a filter screen, so as to avoid the problem that particles that have reached the processing standard continue to be repeatedly ground, resulting in a wide particle size distribution of the materials, and thus low production efficiency and high production energy consumption.

[0004] However, the use efficiency of the above grading mechanism is relatively low. It aims to achieve material particle size grading by setting a filter screen in a static state. The efficiency of this method is relatively low because the screening ability of the filter screen in a static state is limited, and in addition, the material is relatively thick, which may also cause the filter screen to become blocked and unable to perform grading.

[0005] Therefore, our company has made improvements on the basis of the existing technology and designed this sand mill with graded discharge, which adopts a dynamic centrifugal separation mechanism, ensuring both high-efficiency screening and avoiding the problem of filter screen blockage. Summary of the Utility Model

[0006] (1) Technical Problems to be Solved

[0007] Aiming at the deficiencies of the existing technology, the utility model provides a sand mill with graded discharge, which solves the problems of low efficiency and easy blockage of the grading mechanism of the existing sand mill.

[0008] (2) Technical Solutions

[0009] To achieve the above object, the utility model provides the following technical solutions: A sand mill with graded discharge includes a sand mill body and a powder box. An inlet is provided on the cylinder body of the sand mill body, and a pumping pump and a suction pump are also respectively provided on the cylinder body.

[0010] A rotatable centrifugal separation cylinder is installed in the powder box. An inlet end and an outlet end are respectively provided on the upper and lower sides of the centrifugal separation cylinder. The inlet end extends to the outside of the powder box, and the outlet of the pumping pump is communicated with the inlet end of the centrifugal separation cylinder through a pumping pipe.

[0011] A gear ring is installed on the feeding end, a first motor is arranged on the top of the powder box, a rotatable gear is installed on the output end of the first motor, and the gear ring and the gear are connected through a conveyor belt transmission.

[0012] A guide baffle is arranged in the powder box, and discharge pipes extending to the outside of the powder box are arranged on both sides of the guide baffle, and the discharge end penetrates the guide baffle and extends to the outside of the bottom of the guide baffle.

[0013] A rotatable stirring shaft is installed at the bottom of the inner wall of the powder box, and the stirring shaft is driven by an external second motor.

[0014] A discharge pipe is installed at the bottom of the powder box, and the discharge pipe is connected with the suction pump through a reflux pipe.

[0015] As a further preference, the guide baffle is in a convex shape, with low ends and a high middle portion.

[0016] As a further preference, a plurality of guide plates are installed on the inner wall of the centrifugal separation barrel to increase the retention time of the material in the centrifugal separation barrel.

[0017] As further preferred, a slide rail is provided on the top of the inner wall of the powder box, and a slide plate is provided on the feed end, and the slide plate is slidably mounted on the slide rail.

[0018] As further preferred, the inner wall of the powder box is provided with an anti-sticking brush, and the anti-sticking brush is in contact with the outer wall of the centrifugal separation cylinder.

[0019] (III) Beneficial effects

[0020] The utility model provides a graded discharging sand mill, which has the following beneficial effects:

[0021] The graded discharging sand mill is provided with a dynamic centrifugal separation mechanism. The material is rotated at high speed in the centrifugal separation mechanism, and the material that meets the particle size requirements is thrown out, while the large particles of material remain in the separation cylinder and flow back into the sand mill. After being processed by the sand mill, it flows into the separation cylinder again for screening until it fully meets the requirements. The advantage of centrifugal screening is that it can fully separate the materials that meet the requirements, and the use of an anti-sticking brush can prevent the problem of clogging of the centrifugal cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 This is a cross-sectional view of the powder box structure of the utility model;

[0024] Figure 3 This is a cross-sectional view of the centrifugal separation cylinder structure of the utility model.

[0025] In the figure: 1. Sand mill body; 2. Powder box; 3. Feed inlet; 4. Extraction pump; 5. Extraction pipe; 6. Centrifugal separation cylinder; 61. Feed end; 62. Discharge end; 63. Guide plate; 7. Ring gear; 8. First motor; 9. Gear; 10. Conveyor belt; 11. Guide baffle; 12. Discharge pipe; 13. Agitator shaft; 14. Second motor; 15. Discharge pipe; 16. Reflux pipe; 17. Suction pump; 18. Anti-sticking brush; 19. Slide rail; 20. Slide plate. DETAILED DESCRIPTION

[0026] 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 in 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.

[0027] like Figure 1 As shown, the utility model provides a technical solution: a graded discharging sand mill, comprising a sand mill body 1 and a powder box 2, a feed port 3 is arranged on the barrel of the sand mill body 1, and a pumping pump 4 and a suction pump 17 are also arranged on the barrel.

[0028] like Figures 2 - 3 As shown, a rotatable centrifugal separation cylinder 6 is installed in the powder box 2, and a feed end 61 and a discharge end 62 are respectively provided on the upper and lower sides of the centrifugal separation cylinder 6. The feed end 61 extends to the outside of the powder box 2, and the outlet of the suction pump 4 is connected to the feed end 61 of the centrifugal separation cylinder 6 through a suction pipe 5. It should be noted that the suction pipe 5 is not fixedly connected to the feed end 61, and the two are in active contact. Therefore, the rotation of the centrifugal separation cylinder 6 does not affect the discharge of the suction pipe 5. A plurality of guide plates 63 are installed on the inner wall of the centrifugal separation cylinder 6 to increase the residence time of the material in the centrifugal separation cylinder 6. The purpose of increasing the residence time is to fully allow the material that meets the particle size requirements to be thrown out.

[0029] like Figure 3 As shown, a slide rail 19 is provided on the top of the inner wall of the powder box 2, and a slide plate 20 is provided on the feed end 61. The slide plate 20 is slidably mounted on the slide rail 19, and the main load of the centrifugal separation cylinder 6 is borne by the slide rail 19.

[0030] like Figure 2 As shown, a gear ring 7 is installed on the feed end 61, a first motor 8 is arranged on the top of the powder box 2, a rotatable gear 9 is installed on the output end of the first motor 8, and the gear ring 7 and the gear 9 are connected by a conveyor belt 10.

[0031] like Figure 2As shown, an anti-sticking brush 18 is provided on the inner wall of the powder bin 2. The anti-sticking brush 18 contacts the outer wall of the centrifugal separation cylinder 6. When the centrifugal separation cylinder 6 rotates, it contacts the anti-sticking brush 18, thereby cleaning the adhered slurry and avoiding blockage.

[0032] As Figure 2 shown, a diversion partition 11 is provided in the powder bin 2. The diversion partition 11 is in the shape of a convex character, with both ends low and the middle high. Discharge pipes 12 extending to the outside of the powder bin 2 are provided on both sides of the diversion partition 11. The discharge end 62 penetrates through the diversion partition 11 and extends to the outside of the bottom of the diversion partition 11.

[0033] As Figure 2 shown, a rotatable stirring shaft 13 is installed at the bottom of the inner wall of the powder bin 2. The stirring shaft 13 is driven by an external second motor 14.

[0034] As Figure 1 shown, a discharge pipe 15 is installed at the bottom of the powder bin 2. The discharge pipe 15 is communicated with a suction pump 17 through a return pipe 16.

[0035] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0036] During use, the material enters the cylinder on the sand mill body 1 through the feed port 3. The sand mill body 1 is started to collide and rub the material. Then, the pumping pump 4 is started, and the material is pumped into the centrifugal separation cylinder 6 through the pumping pipe 5. The first motor 8 is started to drive the gear 9 to rotate, and then the toothed ring 7 and the centrifugal separation cylinder 6 are driven to rotate through the conveyor belt 10. The material meeting the particle size requirements is thrown out through the filter holes on the centrifugal separation cylinder 6 into the powder bin 2 by the centrifugal force generated by the high-speed rotation.

[0037] The thrown-out material flows out through the diversion partition 11 and is discharged through the discharge pipe 12.

[0038] The material not meeting the particle size requirements stays in the centrifugal separation cylinder 6 and is discharged to the bottom of the powder bin 2 through the discharge end 62 at the bottom. The second motor 14 is started to drive the stirring shaft 13 to rotate, thereby stirring the material. Then, the suction pump 17 is started, and the material is pumped back into the sand mill through the return pipe 16, and then sent into the centrifugal separation cylinder 6 again through the pumping pump 4, and this is repeated in sequence until it fully meets the requirements.

[0039] In summary, for the classified discharge sand mill, by setting up a dynamic centrifugal separation mechanism, the material rotates at a high speed within the centrifugal separation mechanism, and the material meeting the particle size requirements is thrown out, while the large-particle material remains inside the separation cylinder and reflows back into the sand mill. After being processed by the sand mill, it flows into the separation cylinder again for screening until it fully meets the requirements. The advantage of centrifugal screening is that the material meeting the requirements can be fully separated. Coupled with the use of an anti-sticking brush, the problem of centrifugal cylinder blockage can be prevented.

[0040] It should be noted that the electrical components appearing in this text are all electrically connected to an external main controller and 220V or 380V mains electricity. And the main controller can be a conventional known device such as a computer that plays a control role. Its control principle, internal structure, and control switch method are all conventional means of the existing technology and are directly cited here without further elaboration. In this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A classified discharging sand mill, characterized in that: The invention comprises a sand mill body (1) and a powder material box (2); a feed port (3) is arranged on the cylinder of the sand mill body (1); and a material extraction pump (4) and a material suction pump (17) are also arranged on the cylinder; A rotatable centrifugal separation cylinder (6) is installed in the powder box (2), and a feed end (61) and a discharge end (62) are respectively arranged on the upper and lower sides of the centrifugal separation cylinder (6). The feed end (61) extends to the outside of the powder box (2), and the outlet of the extraction pump (4) is connected to the feed end (61) of the centrifugal separation cylinder (6) through a extraction pipe (5); A gear ring (7) is installed on the feeding end (61), a first motor (8) is arranged on the top of the powder box (2), a rotatable gear (9) is installed on the output end of the first motor (8), and the gear ring (7) and the gear (9) are connected by a transmission belt (10); A guide baffle (11) is arranged in the powder box (2), and discharge pipes (12) extending to the outside of the powder box (2) are arranged on both sides of the guide baffle (11), and the discharge end (62) passes through the guide baffle (11) and extends to the outside of the bottom of the guide baffle (11); A rotatable stirring shaft (13) is installed at the bottom of the inner wall of the powder box (2), and the stirring shaft (13) is driven by an external second motor (14); A discharge pipe (15) is installed at the bottom of the powder material box (2), and the discharge pipe (15) is connected to a suction pump (17) through a return pipe (16).

2. The classified discharging sand mill according to claim 1, wherein: The guide baffle (11) is in the shape of a convex character, with low ends and a high middle portion.

3. The classified discharging sand mill according to claim 1, wherein: The inner wall of the centrifugal separation cylinder (6) is equipped with multiple groups of guide plates (63) to increase the retention time of the material in the centrifugal separation cylinder (6).

4. A classified discharging sand mill according to claim 1, wherein: A slide rail (19) is arranged on the top of the inner wall of the powder box (2), and a slide plate (20) is arranged on the feeding end (61), and the slide plate (20) is slidably mounted on the slide rail (19).

5. A classified discharging sand mill according to claim 1, characterized in that: The inner wall of the powder box (2) is provided with an anti-sticking brush (18), and the anti-sticking brush (18) is in contact with the outer wall of the centrifugal separation cylinder (6).

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