CN219187189U - Vertical medium grinding mechanism - Google Patents

Abstract

The utility model discloses a vertical medium grinding mechanism which comprises a cylinder, a discharging screen and a scraping blade. A grinding cavity is arranged in the cylinder body, a grinding medium and a grinding mechanism are arranged in the grinding cavity, and a feed inlet and a discharge outlet are respectively arranged at two ends of the cylinder body; the discharging screen is connected with the discharging port, is arranged in the grinding cavity and is suitable for blocking grinding media from passing through; the doctor blade cover is established in the periphery of ejection of compact screen cloth, and the doctor blade rotates for the periphery of ejection of compact screen cloth. According to the utility model, the scraping blade can rotate relative to the periphery of the discharging screen, and when large particle aggregates appear on the discharging screen, the scraping blade can timely scrape the aggregates, so that abnormal discharging caused by blocking of the discharging screen is prevented.

Description

Vertical medium grinding mechanism

Technical Field

The utility model relates to the technical field of grinding devices, in particular to a vertical medium grinding mechanism.

Background

The vertical medium grinder is grinding and dispersing equipment with wide application range, and the grinding medium can be properly added and subtracted to adjust the fineness requirement due to the great differences of the material properties, fineness requirements and process conditions of different products. The high-efficiency grinding device is widely applied to high-efficiency grinding equipment in the industries of paint, dye, printing ink, pesticide, magnetic tape, papermaking, leather, chemical industry and the like, and has the advantages of simple structure, stable starting, high continuous production efficiency, convenient color change, easy cleaning, simple operation and the like. In order to prevent grinding media from being carried out of the grinding chamber by the material, existing vertical grinding machines are usually provided with a discharge screen at the discharge port. The discharging screen can prevent the grinding medium from flowing out, and the materials can be discharged out of the grinding cavity through the discharging screen after being ground. But large-particle materials or grinding media are easy to agglomerate outside the discharge screen, the agglomerated materials can be blocked on the discharge screen and cannot pass through the discharge screen, and the agglomerated materials or grinding media can be further agglomerated on the discharge screen, so that the discharge efficiency is seriously affected.

Disclosure of Invention

An objective of the present application is to provide a vertical media grinding mechanism, so as to solve the problems set forth in the background art.

In order to achieve the above purpose, the present application provides the following technical solutions:

a vertical media milling mechanism comprising:

the grinding device comprises a barrel, a grinding device and a grinding device, wherein a grinding cavity is arranged in the barrel, grinding media and a grinding mechanism are arranged in the grinding cavity, and a feed inlet and a discharge outlet are respectively arranged at two ends of the barrel;

the discharging screen is connected with the discharging port, is arranged in the grinding cavity and is suitable for blocking the grinding medium from passing through;

the scraping blade is sleeved on the periphery of the discharging screen, and rotates relative to the periphery of the discharging screen.

Further, the grinding mechanism comprises a rotor and a main shaft, the scraping blade is connected with the rotor or the main shaft, and the rotor is connected with the main shaft.

Further, the rotor is close to the one end of discharge gate is equipped with axial blown down tank, the ejection of compact screen cloth is the barreled, the ejection of compact screen cloth stretches into in the blown down tank, be equipped with on the periphery lateral wall of rotor with the discharge channel of blown down tank intercommunication, be equipped with on the lateral wall of blown down tank the doctor-bar.

Further, a certain gap is formed between the scraping blade and the discharging screen.

Further, the discharging channel comprises a top surface, a bottom surface, a first side surface and a second side surface, the rotating direction of the rotor is from the second side surface to the first side surface, the upper end and the lower end of the first side surface are respectively connected with the top surface and one side of the bottom surface, the upper end and the lower end of the second side surface are respectively connected with the top surface and the other side of the bottom surface, the first side surface extends along the radial direction of the rotor, and the second side surface is obliquely arranged from inside to outside and is far away from the direction of the first side surface.

Further, the wiper blade is arranged on an extension surface of the second side surface extending inwards.

Further, the cross section of the scraping blade is triangular, quadrilateral, circular or semicircular.

Further, the discharging screen comprises a filter screen, a filter screen seat and a filter screen end cover, the filter screen seat is detachably connected with the cylinder body, the filter screen seat stretches into the discharging chute, the filter screen is arranged on the side wall of the filter screen seat, and the filter screen end cover is arranged on the end face of the filter screen seat stretching into the discharging chute.

Further, stirring blades are arranged on the outer wall of the rotor.

Further, a feeding sieve plate is arranged at the feeding hole.

In summary, the utility model has the technical effects and advantages that:

1. according to the utility model, the scraping blade can rotate relative to the periphery of the discharging screen, and when large particle aggregates or grinding media appear on the discharging screen, the scraping blade can timely scrape away or scrape away the aggregates or the grinding media, so that abnormal discharging caused by blocking of the discharging screen is prevented;

2. in the utility model, when the rotor rotates, the second side surface can generate outward thrust to the agglomerates or the grinding media, so that the agglomerates or the grinding media can be reduced from entering the discharge chute, and the influence of the agglomerates or the grinding media on the discharge of the discharge screen can be effectively reduced;

3. in the utility model, the scraping blade is arranged on the extension surface of the second side surface extending inwards, and when the rotor rotates, the area of pushing the aggregate or the grinding medium outwards is increased due to the existence of the scraping blade, so that the effect of reducing the aggregate or the grinding medium from entering the discharge chute is improved; the material, the aggregate or the grinding medium in the discharge chute forms rotational flow when the scraping blade rotates, the material discharge is facilitated, the grinding medium and the aggregate are thrown out of the discharge channel, or the scraping blade scrapes away the aggregate or the grinding medium.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a neutral media milling mechanism according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a cross-sectional view B-B of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 3 at C;

fig. 5 is a schematic structural diagram of a rotor according to an embodiment of the present utility model.

In the figure: 1. a cylinder; 2. a discharging screen; 3. a wiper blade; 4. a rotor; 5. a main shaft; 11. a grinding chamber; 12. a feed inlet; 13. an inner cylinder; 14. an outer cylinder; 15. an upper end plate; 16. a lower end plate; 17. a cooling chamber; 18. a discharge port; 121. a feeding sieve plate; 21. a filter screen; 22. a filter screen seat; 23. a filter screen end cover; 221. a discharging part; 31. a third side; 32. a fourth side; 33. a fifth side; 41. a discharge chute; 42. a discharge channel; 43. stirring blades; 421. a bottom surface; 422. a first side; 423. a second side.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

In order to solve the problems in the prior art. An embodiment of the utility model provides a vertical type medium grinding mechanism, which is shown in figures 1-5, and comprises a cylinder body 1, a discharging screen 2 and a scraping blade 3. The barrel 1 is internally provided with a grinding cavity 11, grinding media and a grinding mechanism are arranged in the grinding cavity 11, two ends of the barrel 1 are respectively provided with a feed inlet 12 and a discharge outlet 18, materials enter the grinding cavity 11 from the feed inlet 12, the grinding mechanism can drive the grinding media and the materials to rotate, the materials are ground by impact between the grinding media, and the ground materials are discharged through the discharge outlet 18. In order to avoid that the grinding media is discharged from the discharge port 18, the discharge screen 2 is connected with the discharge port 18, the discharge screen 2 is arranged in the grinding cavity 11, and the discharge screen 2 is suitable for blocking the grinding media to pass through; the scraping blade 3 is sleeved on the periphery of the discharging screen 2, and the scraping blade 3 rotates relative to the periphery of the discharging screen 2.

In this embodiment, doctor-bar 3 can be for discharging screen cloth 2's periphery rotation, and when discharging screen cloth 2 appeared large granule aggregate or grinding medium, doctor-bar 3 rotated can in time scrape aggregate or grinding medium and scrape away, prevents that discharging screen cloth 2 putty from leading to unable normal ejection of compact.

In this embodiment, the feeding port 12 is disposed at the lower end of the cylinder 1, and the discharging port 18 is disposed at the upper end of the cylinder 1; the flow direction of the material in the cylinder 1 is from bottom to top, and the material generates upward drag force on the grinding medium, so that the gravity applied to the grinding medium can be counteracted, and the grinding medium is distributed more uniformly in the cylinder 1. In other embodiments, the inlet 12 may be disposed at the upper end of the barrel 1, and the outlet 18 is disposed at the lower end of the barrel 1.

Optionally, the cylinder 1 comprises an inner cylinder 13, an outer cylinder 14, an upper end plate 15 and a lower end plate 16, wherein the inner cylinder 13 is sleeved in the outer cylinder 14, the upper end plate 15 and the lower end plate 16 are respectively arranged at the upper end and the lower end of the inner cylinder 13 and the outer cylinder 14, and a cooling cavity 17 is arranged between the inner cylinder 13 and the outer cylinder 14. The side wall of the outer cylinder 14 is provided with a cooling medium outlet and a cooling medium inlet, respectively. In operation, a cooling medium, in this embodiment cooling water, circulates through the cooling chamber 17 and cools the material in the grinding chamber 11.

Alternatively, any number of feed ports 12 may be provided; a feed screen plate 121 is arranged at the feed inlet 12. The feed screen plate 121 is provided with a narrow slit for passing the material, and the gap of the narrow slit is smaller than the external dimension of the grinding medium, so that the grinding medium can be prevented from flowing out of the grinding cavity 11. The mesh openings in the feed screen 121 are not limited to narrow slits, but may be other shapes as long as it is ensured that the grinding media does not flow out of the mesh openings.

Further, the grinding mechanism comprises a rotor 4 and a main shaft 5, the main shaft 5 extends into the grinding cavity 11 from one end of the cylinder body 1 provided with the feed inlet 12, the rotor 4 is connected with the main shaft 5, the main shaft 5 is used for driving the rotor 4 to rotate, and the scraping blade 3 is connected with the rotor 4 or the main shaft 5. The spindle 5 is connected to a drive mechanism, such as a motor or a motor-reducer structure, which is capable of driving the spindle 5 to rotate. The rotation of the main shaft 5 can drive the rotor 4 and the scraping blade 3 to rotate. In this embodiment, no separate driving unit is provided for the wiper blade 3 to drive the wiper blade 3 to rotate, but the wiper blade 3 is connected with the rotor 4 or the spindle 5, so that the structure is compact and the transmission is simple.

Further, one end of the rotor 4, which is close to the discharge hole 18, is provided with an axial discharge chute 41, the discharge screen 2 is barrel-shaped, and the discharge screen 2 extends into the discharge chute 41. A discharging channel 42 communicated with the discharging groove 41 is arranged on the peripheral side wall of the rotor 4, and a scraping blade 3 is arranged on the side wall of the discharging groove 41. In this embodiment, the number of the wiper blades 3 is 6, and the plurality of wiper blades 3 are uniformly distributed along the axial direction of the discharge chute 41. The number of the wiper blades 3 is not particularly limited in the present application, and at least one wiper blade 3 is provided. The specific position of the wiper blade 3 on the side wall of the discharge chute 41 is not limited; the shape of the wiper blade 3 is not limited, and for example, the cross-sectional shape of the wiper blade 3 may be quadrangular, triangular, circular, semicircular, elliptic, or any other shape, and the wiper blade 3 may be of any other unspecified shape.

Preferably, the discharge channel 42 comprises a top surface, a bottom surface 421, a first side 422 and a second side 423, and the rotation direction of the rotor 4 is changed from the position of the second side 423 to the position of the first side 422, i.e. the second side 423 is opposite to the grinding medium in the grinding chamber 11 when the rotor 4 rotates. The upper and lower ends of the first side surface 422 are respectively connected with one sides of the top surface and the bottom surface 421, the upper and lower ends of the second side surface 423 are respectively connected with the other sides of the top surface and the bottom surface 421, the first side surface 422 extends along the radial direction of the rotor 4, and the second side surface 423 is obliquely arranged from inside to outside towards a direction far away from the first side surface 422. When the rotor 4 rotates, the second side 423 can generate outward thrust to the agglomerates or the grinding media, so that the agglomerates or the grinding media can be reduced from entering the discharge chute 41, and the influence of the agglomerates or the grinding media on the discharge of the discharge screen 2 can be effectively reduced.

Preferably, the wiper 3 is arranged on the side wall of the spout 41 in the present embodiment, and the wiper 3 is arranged on an extension of the second side 423 extending inwards. The blade 3 may extend from the top surface of the spout 41 to the bottom surface of the spout 41. In this embodiment, the wiper blade 3 preferably includes a third side 31 and a fourth side 32, the third side 31 being located on an extended surface of the second side 423 extending inward, the fourth side 32 being located on a side of the third side 31 facing away from the first side 422; in the present embodiment, the third side 31 and the fourth side 32 are connected by the fifth side 33; in other embodiments of the present application, the third side 31 and the fourth side 32 may be directly connected, in which case the wiper blade is similarly triangular in cross-section. In this embodiment, the third side 31 of the wiper blade 3 is an extension of the second side 423 of the discharge channel 42 toward the direction of the discharge chute 41, and when the rotor 4 rotates, the area of pushing the agglomerates or grinding media outwards is increased due to the presence of the third side 31, so that the effect of reducing the agglomerates or grinding media from entering the discharge chute 41 is improved.

Further, the angle b between the fourth side 32 and the radial direction of the rotor 4 is larger than the angle a between the third side 31 and the radial direction of the rotor 4. Further, the angle between the fifth side 33 and the fourth side 32 is an obtuse angle, and the angle between the fifth side 33 and the third side 31 is an acute angle. In this embodiment, the inclined arrangement of the fourth side 32 and the fifth side 33 facilitates the swirling flow of the material, the agglomerate or the grinding medium in the discharge chute 41 when the wiper blade 3 rotates, facilitates the discharging of the material and the throwing out of the grinding medium and the agglomerate from the discharge channel 42, or facilitates the scraping of the agglomerate or the grinding medium by the wiper blade 3.

Further, a certain gap is arranged between the scraping blade 3 and the discharging screen 2. In this example, the grinding media used was grinding beads. As an embodiment of the utility model, the gap between the doctor blade 3 and the discharge screen 2 is smaller than the diameter of the grinding beads, for example, the gap is 1/3-1/2 of the diameter of the grinding beads, and the doctor blade 3 can scrape away agglomerates or grinding media at the discharge screen 2 directly. As another embodiment of the utility model, the gap between the scraping blade 3 and the discharging screen 2 is larger than or equal to the diameter of the grinding balls, for example, the gap is 1-3 times the diameter of the grinding balls, the rotor 4 can drive the scraping blade 3 to rotate, the scraping blade 3 can generate rotational flow to wash out grinding media or aggregates attached to the discharging screen 2, and the rotating scraping blade 3 can throw out the grinding media or aggregates from the discharging groove 41 through the discharging channel 42. As another embodiment of the utility model, the gap between the same doctor blade 3 or a different doctor blade 3 and the discharge screen 2 may be provided as a combination of the above two dimensions, enabling a combination of scraping and swirling removal of grinding media and agglomerates.

Further, the outer wall of the rotor 4 is provided with stirring blades 43. Optionally, the discharging screen 2 comprises a screen 21, a screen seat 22 and a screen end cover 23, the screen seat 22 is detachably connected with the barrel 1, the screen seat 22 stretches into the discharging chute 41, the screen 21 is arranged on the side wall of the screen seat 22, and the screen end cover 23 is arranged on the end face of the screen seat 22 stretching into the discharging chute 41. Alternatively, the filter screen seat 22 may be connected with the cylinder 1 by a bolt, or the filter screen seat 22 may be clamped with the cylinder 1, or the like. The screen end cap 23 is capable of supporting the screen 21. The end of the filter screen seat 22 extending out of the cylinder 1 is provided with a discharging part 221. The discharging screen 2 can be detached by detaching the bolts, and the maintenance and replacement of the discharging screen 2 are facilitated.

The working procedure of this embodiment is: the materials enter the grinding cavity 11 through the feeding screen plate 121, the driving mechanism drives the main shaft 5 and the rotor 4 to rotate, the grinding media are driven by the stirring blades 43 to spiral in the grinding cavity 11, and the impact between the grinding media grinds the material particles; the ground material is discharged out of the grinding cavity 11 through the discharging screen 2; the second side 423 of the discharge channel 42 is opposite to the movement direction; the second side 423 applies an outward pushing force to the grinding media and the aggregates entering the discharge channel 42, most of the grinding media and the aggregates can be thrown out through the second side 423, and a small part of the grinding media and the aggregates enter the discharge chute 41 between the rotor 4 and the discharge screen 2 through the discharge channel 42; the rotor 4 drives the scraping blade 3 to rotate, the scraping blade 3 can directly scrape away grinding media and aggregates to reduce the influence on the discharging screen 2, the scraping blade 3 can also wash out the grinding media and the aggregates attached to the discharging screen 2 through rotational flow generated by rotation, and the scraping blade 3 rotating after the rotational flow can throw the grinding media and the aggregates out of the discharging channel 42.

Finally, it should be noted that: the foregoing description of the preferred embodiments of the present utility model is not intended to be limiting, but rather, it will be apparent to those skilled in the art that the foregoing description of the preferred embodiments of the present utility model can be modified or equivalents can be substituted for some of the features thereof, and any modification, equivalent substitution, improvement or the like that is within the spirit and principles of the present utility model should be included in the scope of the present utility model.

Claims (10)

1. A vertical media milling mechanism, comprising:

the grinding device comprises a cylinder body (1), wherein a grinding cavity (11) is formed in the cylinder body (1), a grinding medium and a grinding mechanism are arranged in the grinding cavity (11), and a feed inlet (12) and a discharge outlet (18) are respectively formed in two ends of the cylinder body (1);

the discharging screen (2) is connected with the discharging port (18), the discharging screen (2) is arranged in the grinding cavity (11), and the discharging screen (2) is suitable for blocking the grinding medium to pass through;

the scraping blade (3) is sleeved on the periphery of the discharging screen (2), and the scraping blade (3) rotates relative to the periphery of the discharging screen (2).

2. The vertical media grinding mechanism according to claim 1, characterized in that the grinding mechanism comprises a rotor (4) and a spindle (5), the wiper blade (3) being connected to the rotor (4) or spindle (5), the rotor (4) being connected to the spindle (5).

3. The vertical media grinding mechanism according to claim 2, wherein one end of the rotor (4) close to the discharge hole (18) is provided with an axial discharge chute (41), the discharge screen (2) is barrel-shaped, the discharge screen (2) stretches into the discharge chute (41), the peripheral side wall of the rotor (4) is provided with a discharge channel (42) communicated with the discharge chute (41), and the side wall of the discharge chute (41) is provided with the wiper blade (3).

4. A vertical media milling mechanism according to claim 3, characterized in that there is a gap between the wiper blade (3) and the discharge screen (2).

5. The vertical media grinding mechanism according to claim 3 or 4, wherein the discharge channel (42) comprises a top surface, a bottom surface (421), a first side surface (422) and a second side surface (423), the rotation direction of the rotor (4) is rotated from the position of the second side surface (423) to the position of the first side surface (422), the upper and lower ends of the first side surface (422) are respectively connected with one side of the top surface and one side of the bottom surface (421), the upper and lower ends of the second side surface (423) are respectively connected with the top surface and the other side of the bottom surface (421), the first side surface (422) is arranged along the radial extension of the rotor (4), and the second side surface (423) is arranged obliquely from inside to outside toward a direction away from the first side surface (422).

6. The vertical media grinding mechanism of claim 5, wherein the wiper blade (3) is provided on an extended surface of the second side surface (423) extending inward.

7. The vertical media grinding mechanism of claim 6, wherein the wiper blade (3) may be triangular, quadrilateral, circular or semicircular in cross section.

8. A vertical media milling mechanism according to claim 3, characterized in that the discharge screen (2) comprises a screen (21), a screen seat (22) and a screen end cap (23), the screen seat (22) is detachably connected with the cylinder (1), the screen seat (22) extends into the discharge chute (41), the screen (21) is arranged on the side wall of the screen seat (22), and the screen end cap (23) is arranged on the end face of the screen seat (22) extending into the discharge chute (41).

9. A vertical media milling mechanism according to claim 2, characterized in that the outer wall of the rotor (4) is provided with stirring blades (43).

10. The vertical media milling mechanism according to claim 1, wherein a feed screen (121) is provided at the feed inlet (12).

Images