A crushing and grinding device for grain processing

Abstract

The present invention relates to the field of crushing and grinding, and specifically to a crushing and grinding device for grain processing. The device comprises a frame, a rotating cylinder, a limiting inner cylinder and a supporting structure. The rotating cylinder is horizontally arranged on the frame and can rotate around its own axis. The rotating cylinder is provided with a feed port and a discharge port. The limiting inner cylinder is coaxially arranged inside the rotating cylinder. The peripheral wall of the limiting inner cylinder comprises an arc-shaped protrusion and a recessed portion. The protrusion and the recessed portion are alternately arranged. The inner peripheral wall of the limiting inner cylinder and the two side walls of the rotating cylinder are enclosed to form a grinding chamber. The grinding chamber is connected to the feed port and the discharge port. The supporting structure is arranged between the outer peripheral wall of the limiting inner cylinder and the inner peripheral wall of the rotating cylinder. The supporting structure is used to support the limiting inner cylinder. In the grinding process of the present invention, due to the special structure of the limiting inner cylinder, the rising height of the grinding balls is increased, the crushing force is greater, and the grinding balls can shake in the flower-shaped groove after falling from a high place, thereby increasing the grinding distance and achieving better crushing and grinding effects of the device.

Description

Technical Field

[0001] The invention relates to the field of crushing and grinding, and in particular to a crushing and grinding device for grain processing. Background Art

[0002] The ball mill is a key equipment for crushing materials after they are crushed. The existing grain crushing and grinding often uses a ball mill. When the ball mill is working, the internal grinding balls rise to a certain height with the rotation of the drum, and then fall down to hit the materials to crush and grind the materials. However, the height that the steel balls can be lifted by centrifugal force is limited, resulting in poor crushing and grinding effects. The Chinese patent document with the authorization announcement number CN 115591622 B discloses a ball mill for cement production, which is provided with an annular liner plate inside the rotating drum, and the materials are ground inside the liner plate. Multiple groups of lifting components are provided inside the liner plate, and the steel balls are lifted under the action of the lifting components. However, the lifting components in the above scheme include a No. 2 motor, a conveying pump, a rotating ring plate, a lifting plate and other structures, which are complex in structure and costly, and the complex structure provided inside the liner plate is not conducive to grinding the materials, resulting in poor grinding effects.

[0003] The information disclosed in the background technology section of this application is only intended to deepen the understanding of the general background technology of this application, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0004] In view of at least one shortcoming of the prior art, the present invention provides a crushing and grinding device for grain processing to solve the problem of poor crushing and grinding effect of the existing ball mill.

[0005] A crushing and grinding device for grain processing of the present invention adopts the following technical scheme: comprising:

[0006] frame;

[0007] The rotating drum is horizontally arranged on the frame and can rotate around its own axis. The rotating drum is provided with a feed inlet and a discharge outlet;

[0008] The limiting inner cylinder is coaxially arranged inside the rotating cylinder, the peripheral wall of the limiting inner cylinder includes arc-shaped raised parts and recessed parts, the raised parts and recessed parts are arranged alternately, the inner peripheral wall of the limiting inner cylinder and the two side walls of the rotating cylinder are surrounded to form a grinding chamber, the grinding chamber is filled with grinding balls, and the grinding chamber is connected to the feed port and the discharge port;

[0009] The support structure is arranged between the outer peripheral wall of the limiting inner cylinder and the inner peripheral wall of the rotating cylinder, and is used to support the limiting inner cylinder.

[0010] Optionally, the support structure includes a plurality of support rods, which are evenly distributed in the circumferential direction and the axial direction. The support rods correspond one-to-one to the raised portions and recessed portions of the limiting inner cylinder in the circumferential direction. The outer ends of the support rods are connected to the rotating cylinder, and the inner ends are connected to the corresponding raised portions or recessed portions of the limiting inner cylinder.

[0011] Optionally, the limiting inner cylinder can be deformed, and the supporting structure includes a plurality of telescopic cylinders, which are evenly distributed in the circumferential direction and the axial direction. The telescopic cylinders in the circumferential direction correspond one-to-one to the raised portions and recessed portions of the limiting inner cylinder. The outer ends of the telescopic cylinders are connected to the rotating cylinder, and the inner ends are connected to the corresponding raised portions or recessed portions of the limiting inner cylinder.

[0012] Optionally, a pressure sensor is provided in the rotating cylinder, and the pressure sensor is used to detect the axial pressure exerted on the limiting inner cylinder, thereby controlling the telescopic length of each axial telescopic cylinder.

[0013] Optionally, the telescopic cylinder is a pneumatic cylinder.

[0014] Optionally, the limiting inner cylinder is a steel belt structure, and the peripheral wall of the steel belt is provided with perforations.

[0015] Optionally, the limiting inner cylinder is a CVT chain.

[0016] Optionally, the discharge port is arranged on the peripheral wall of the rotating drum.

[0017] Optionally, a bearing seat is provided on the frame, and both ends of the rotating cylinder are arranged on the bearing seat through support shafts. A motor and a reducer are also provided on the frame. The output shaft of the motor is connected to the input shaft of the reducer through a belt transmission mechanism, and the output shaft of the reducer is connected to the support shaft of the rotating cylinder through a transmission connector.

[0018] Optionally, the transmission connector is a coupling or a clutch.

[0019] The beneficial effects of the present invention are as follows: a crushing and grinding device for grain processing of the present invention is provided with a circumferentially closed limiting inner cylinder inside a rotating cylinder, the longitudinal section of the limiting inner cylinder is a wavy pattern, and the material is crushed and ground inside the limiting inner cylinder. During the grinding process, due to the special structure of the limiting inner cylinder, the rising height of the grinding balls is increased, the crushing force is greater, and the grinding balls can shake in the pattern grooves after falling from a height, thereby increasing the grinding distance and achieving better crushing and grinding effects of the device.

[0020] Furthermore, the limited inner cylinder can be deformed. During the grinding process, by controlling the alternating changes of the raised and recessed parts of the limited inner cylinder, the material adhering to the cylinder wall can be separated from the cylinder wall, which makes the crushing more uniform and the discharge more complete, without the need for additional cleaning procedures. At the same time, by controlling the degree of deformation of the limited inner cylinder in the axial direction, the grinding balls in the material box can be dispersed from the side with more to the side with less, and the grinding balls and materials are evenly distributed in the cylinder, further improving the grinding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the overall structure of a crushing and grinding device for grain processing according to the present invention;

[0023] Figure 2 It is a front view of a crushing and grinding device for grain processing of the present invention;

[0024] Figure 3 for Figure 2 Middle AA section view;

[0025] Figure 4 It is a schematic diagram of the structure of the limiting inner cylinder in the present invention;

[0026] Figure 5 This is an enlarged structural diagram when the limiting inner cylinder is a CVT chain.

[0027] In the figure:

[0028] 100, frame; 101, reducer; 102, transmission connector; 103, motor; 104, hook; 105, belt transmission mechanism;

[0029] 200, rotating drum; 201, feeding port; 202, discharging port; 203, telescopic cylinder; 204, supporting plate;

[0030] 210. Limiting inner cylinder; 211. Double-layer chain plate; 212. Single-layer chain plate; 213. Connecting column. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] like Figures 1 to 5 As shown, a crushing and grinding device for grain processing provided by an embodiment of the present invention includes a frame 100, a rotating cylinder 200, a limiting inner cylinder 210 and a supporting structure.

[0033] The rotating drum 200 is horizontally arranged on the frame 100 and can rotate around its own axis. The rotating drum 200 is provided with a feed port 201 and a discharge port 202. For the convenience of installation and transmission, a bearing seat is arranged on the frame 100. Both ends of the rotating drum 200 are arranged on the bearing seat through a supporting shaft. The frame 100 is also provided with a motor 103 and a reducer 101. The output shaft of the motor 103 is connected to the input shaft of the reducer 101 through a belt transmission mechanism 105. The output shaft of the reducer 101 is connected to the supporting shaft of the rotating drum 200 through a transmission connector 102. The transmission connector 102 can be a coupling or a clutch. The frame 100 is also provided with a hook 104 to facilitate the movement of the equipment.

[0034] The limiting inner cylinder 210 is circumferentially closed and coaxially arranged inside the rotating cylinder 200. The peripheral wall of the limiting inner cylinder 210 includes arc-shaped protrusions and recesses, and the protrusions and recesses are alternately arranged, that is, the longitudinal section of the limiting inner cylinder 210 is a wavy flower shape. The inner peripheral wall of the limiting inner cylinder 210 and the two side walls of the rotating cylinder 200 are combined to form a grinding chamber, and the grinding chamber is filled with grinding balls. The grinding chamber is connected to the feed port 201 and the discharge port 202. The grains to be crushed enter the grinding chamber from the feed port 201 and are ground by steel balls when the rotating cylinder 200 rotates.

[0035] The support structure is disposed between the outer circumferential wall of the limiting inner cylinder 210 and the inner circumferential wall of the rotating cylinder 200 , and is used to support and position the limiting inner cylinder 210 .

[0036] In this embodiment, the support structure includes a plurality of support rods, which are evenly distributed in the circumferential direction and the axial direction. The support rods in the circumferential direction correspond one-to-one to the raised portions and recessed portions of the limiting inner cylinder 210. The outer ends of the support rods are connected to the rotating cylinder 200, and the inner ends are connected to the corresponding raised portions or recessed portions of the limiting inner cylinder 210.

[0037] When in use, the grain material is added into the grinding chamber from the feed port 201. There are grinding balls of different sizes in the grinding chamber. The motor 103 is started to drive the rotating cylinder 200 to rotate. When the rotating cylinder 200 rotates, the grinding balls contact the material to grind the grain material.

[0038] Due to the special structure of the limiting inner cylinder 210, during the rotation of the rotating cylinder 200, the grinding balls can be lifted higher driven by the limiting inner cylinder 210, thereby improving the crushing effect on the grains. After falling from a high place, the grinding balls will produce a shaking effect in the depression of the limiting inner cylinder 210, thereby increasing the grinding stroke and achieving a better grinding effect.

[0039] In a further embodiment, the limiting inner cylinder 210 can be deformed, and the support structure includes a plurality of telescopic cylinders 203, which are evenly distributed along the circumferential direction and the axial direction. The telescopic cylinders 203 correspond to the raised portions and recessed portions of the limiting inner cylinder 210 along the circumferential direction. The outer ends of the telescopic cylinders 203 are connected to the rotating cylinder 200, and the inner ends are connected to the corresponding raised portions or recessed portions of the limiting inner cylinder 210. To facilitate the connection between the telescopic cylinders 203 and the limiting inner cylinder 210, the output rod ends of the telescopic cylinders 203 are provided with support plates 204, and the support plates 204 are connected to the limiting inner cylinder 210. The telescopic cylinders 203 may be pneumatic cylinders, hydraulic cylinders, or electric cylinders.

[0040] During the grinding and crushing process, the telescopic cylinder 203 is controlled to change periodically so that the originally extended telescopic cylinder 203 becomes retracted, and the originally retracted telescopic cylinder 203 becomes extended. During the change of the telescopic cylinder 203, the shape of the limiting inner cylinder 210 changes accordingly, and the original raised part of the limiting inner cylinder 210 becomes a recessed part, and the original recessed part becomes a raised part, so that the material adhered to the inner wall of the limiting inner cylinder 210 falls off from the limiting inner cylinder 210, reducing adhesion.

[0041] In a further embodiment, a pressure sensor is provided in the rotating cylinder 200, and the pressure sensor is used to detect the axial pressure of the limiting inner cylinder 210, and then control the telescopic length of each axial telescopic cylinder 203. When the pressure sensor senses that the axial pressure difference of the limiting inner cylinder 210 is large, it means that the material and the grinding balls are unevenly distributed. At this time, the telescopic cylinder 203 on the side with greater pressure is extended to a longer distance, and the material and the grinding balls are distributed to the other side, so that the grinding balls and materials are distributed more evenly, the grinding effect is better, the force is more balanced during the operation of the equipment, and the service life is extended.

[0042] In one embodiment, the limiting inner cylinder 210 is set as a steel belt structure, the peripheral wall of the steel belt is provided with perforations, and the discharge port 202 is set on the peripheral wall of the rotating cylinder 200. During the grinding process, the crushed and ground materials fall out from the perforations of the steel belt. When there is no material but only grinding balls in the grinding chamber, it means that the crushing and grinding is completed, and the discharge port 202 is opened, and the materials are discharged from the discharge port 202. Then the discharge port 202 is closed, and a new round of crushing and grinding can be restarted after adding materials again.

[0043] In one embodiment, the limiting inner cylinder 210 is a CVT chain. It can be understood that the CVT chain includes a double-layer chain plate 211, a single-layer chain plate 212 and a connecting column 213. The double-layer chain plate 211 and the single-layer chain plate 212 are arranged in a predetermined pattern and connected through the connecting column 213. The arrangement method can be adopted to form a unit with a double-layer chain plate 211 and two single-layer chain plates 212. One of the single-layer chain plates 212 of the unit is located between the double-layer chain plate 211 and the other single-layer chain plate 212 and the two ends are respectively hinged to the double-layer chain plate 211 and the other single-layer chain plate 212, and then a chain is formed with this as a unit array.

[0044] In this embodiment, the discharge port 202 is disposed on the peripheral wall of the rotating drum 200 .

[0045] The limiting inner cylinder 210 is set as a CVT chain. The CVT chain has higher strength and is easier to control deformation. During the grinding process, the crushed and ground materials fall out from the gaps of the CVT chain. When there is no material but only grinding balls in the grinding chamber, it means that the crushing and grinding are completed. The discharge port 202 is opened, and the material is discharged from the discharge port 202. After that, the discharge port 202 is closed. After adding material again, a new round of crushing and grinding can be restarted.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A crushing and grinding device for grain processing, characterized in that: include: frame; The rotating drum is horizontally arranged on the frame and can rotate around its own axis. The rotating drum is provided with a feed inlet and a discharge outlet; The limiting inner cylinder is coaxially arranged inside the rotating cylinder, the peripheral wall of the limiting inner cylinder includes arc-shaped raised parts and recessed parts, the raised parts and recessed parts are arranged alternately, the inner peripheral wall of the limiting inner cylinder and the two side walls of the rotating cylinder are surrounded to form a grinding chamber, the grinding chamber is filled with grinding balls, and the grinding chamber is connected to the feed port and the discharge port; A support structure, the support structure is arranged between the outer peripheral wall of the limiting inner cylinder and the inner peripheral wall of the rotating cylinder, and the support structure is used to support the limiting inner cylinder; The support structure includes a plurality of support rods, which are evenly distributed in the circumferential direction and the axial direction. The support rods correspond to the raised portions and recessed portions of the limiting inner cylinder in the circumferential direction one by one. The outer ends of the support rods are connected to the rotating cylinder, and the inner ends are connected to the corresponding raised portions or recessed portions of the limiting inner cylinder. The limiting inner cylinder can be deformed, and the supporting structure includes a plurality of telescopic cylinders, which are evenly distributed along the circumferential direction and the axial direction. The telescopic cylinders along the circumferential direction correspond one to one with the raised parts and recessed parts of the limiting inner cylinder. The outer ends of the telescopic cylinders are connected to the rotating cylinder, and the inner ends are connected to the corresponding raised parts or recessed parts of the limiting inner cylinder.

2. A crushing and grinding device for grain processing according to claim 1, characterized in that: A pressure sensor is arranged inside the rotating cylinder, and the pressure sensor is used to detect the axial pressure exerted on the limiting inner cylinder, and then control the telescopic length of each axial telescopic cylinder.

3. A crushing and grinding device for grain processing according to claim 2, characterized in that: The telescopic cylinder is a pneumatic cylinder.

4. A crushing and grinding device for grain processing according to claim 1, characterized in that: The limiting inner cylinder is a steel belt structure, and the peripheral wall of the steel belt is provided with perforations.

5. A crushing and grinding device for grain processing according to claim 1, characterized in that: The limit inner cylinder is the CVT chain.

6. A crushing and grinding device for grain processing according to claim 4 or 5, characterized in that: The material discharge port is arranged on the peripheral wall of the rotating cylinder.

7. A crushing and grinding device for grain processing according to claim 1, characterized in that: A bearing seat is arranged on the frame, and both ends of the rotating cylinder are arranged on the bearing seat through supporting shafts. A motor and a reducer are also arranged on the frame. The output shaft of the motor is connected to the input shaft of the reducer through a belt transmission mechanism, and the output shaft of the reducer is connected to the supporting shaft of the rotating cylinder through a transmission connector.

8. A grain processing crushing and grinding device according to claim 7, characterized in that: The transmission connector is a coupling or a clutch.

Images