Grain grinding and screening device

Abstract

The utility model discloses a grain grinding and screening device which comprises a mounting frame, a grinding box and a screening device. The powder grinding assembly is connected to the interior of the powder grinding box; and the feeding assembly is arranged and connected to the lower portion of the grinding assembly. According to the grain grinding and screening device, grains added into the grinding box can be ground through the grinding assembly, ground powder is fed into the screening frame by controlling the feeding assembly, the powder can be screened through a first screen, and particles which are not ground completely flow out through a first discharging pipe to be recycled; when powder passes through the first screen, the powder penetrates through the first screen to enter the second screen, the multiple grinding balls between the partition plates on the second screen collide with one another, the grinding and scattering effects can be further achieved when the powder passes through the second screen, then the powder flows out of the second discharging pipe through the second screen to be collected, and fine screening can be achieved while efficient grinding is conducted; the production efficiency and the product quality are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of grain processing, especially to a grain powder grinding and screening device. BACKGROUND

[0002] Grain is the main source of human body heat. The main grains in the world are rice, wheat, rye, sorghum, corn and millet. In China, these grains are produced except rye, and the output of rice, wheat, corn and sorghum is larger. The grains other than rice and wheat are usually called coarse grains. The chemical composition of grain varies with variety, soil, climate and cultivation technology. The most common step in the process of making food from grain is to grind the grain.

[0003] The utility model discloses a kind of powder grinding machines for grain processing, the utility model includes the main body of powder grinding machine, the bottom surface of the main body of powder grinding machine is equipped with support damping mechanism, the bottom surface of the main body of powder grinding machine is symmetrically provided with chute, the main body of powder grinding machine is slidably connected with sliding member by the chute of bottom surface, the bottom surface of the sliding member is welded with storage bin, the surface of the storage bin is symmetrically inserted with rotating rod by bearing, by structure avoids the large noise that this powder grinding machine generates in the process of operation, simultaneously, the powder grinding machine itself has a detachable storage vessel for its material receiving, structure that can push grain powder flat is also provided in the inside of storage vessel, prevent grain powder from being accumulated in mountain shape in storage vessel when powder grinding machine works, but due to the difference of material characteristics and the limitation of equipment design, it leads to that most of grain cannot be completely pulverized in powder grinding machine, and the powder that is ground still needs to be screened on screening equipment, affect work efficiency. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the shortcomings in the prior art, and provides a grain powder grinding and screening device, which comprises: a mounting frame, a powder grinding box arranged above the mounting frame; a powder grinding assembly connected inside the powder grinding box; a feeding assembly arranged below the powder grinding assembly; a screening frame connected below the feeding assembly; a first screen mesh connected inside the screening frame; a second screen mesh connected below the first screen mesh, a plurality of partition plates arranged on the second screen mesh; and a crushing ball arranged between adjacent partition plates.

[0005] As a further description of the above technical solution, a first discharge pipe is arranged on one side of the screening frame, a second discharge pipe is arranged below the screening frame, and a vibrator is detachably connected below the screening frame.

[0006] As a further description of the above technical solution: the grinding assembly comprises a driving motor, the driving motor is connected with the driving shaft through a driving belt, and the driving shaft is provided with a grinding roller located in the interior of the grinding box.

[0007] As a further description of the above technical solution: the feeding assembly comprises a feeding frame, a conveying shaft is arranged in the interior of the feeding frame, conveying blades and a scattering plate are arranged on the conveying shaft, and one end of the conveying shaft is connected with a driving box.

[0008] As a further description of the above technical solution: the conveying blades are located directly below the grinding box, and the scattering plate is located directly above the screening frame.

[0009] As a further description of the above technical solution: the screening frame is provided with an access door, a handle is arranged on the access door, and a control box and a control panel are arranged on the mounting frame.

[0010] As a further description of the above technical solution: the first screen mesh has a larger mesh size than the second screen mesh, and the spacing between the first screen mesh and the second screen mesh is 1.5-2 times the diameter of the grinding ball.

[0011] As a further description of the above technical solution: the partition plate is made of a polytetrafluoroethylene plate, and the grinding ball is a zirconium ball.

[0012] The above technical solution has the following advantages or beneficial effects:

[0013] The grinding assembly can grind the grain added to the interior of the grinding box, the powder after grinding is sent into the screening frame through the control of the feeding assembly, the powder is screened through the first screen mesh, the particles that have not been ground are recovered through the first discharge pipe, the powder passes through the first screen mesh and enters the second screen mesh, the multiple grinding balls between the partition plates on the second screen mesh collide with each other, which further plays a role of grinding and scattering when the powder passes through, so that the grinding precision is higher, and the powder is collected through the second discharge pipe after passing through the second screen mesh, so that fine screening is realized while efficient grinding is realized, and the production efficiency and product quality are improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the grain grinding and screening device in an embodiment of the utility model;

[0015] Figure 2 It is a front view of the grain grinding and screening device in an embodiment of the utility model;

[0016] Figure 3 It is Figure 1 It is an internal schematic view of the screening frame in the grain grinding and screening device;

[0017] Figure 4 For Figure 1 Structure diagram of feeding assembly in grain powder grinding and screening device.

[0018] Legend:

[0019] 1, mounting frame; 2, powder grinding box; 3, powder grinding assembly; 4, feeding assembly; 5, screening frame; 6, first screen; 7, second screen; 8, partition plate; 9, crushing ball; 10, first discharge pipe; 11, second discharge pipe; 12, vibrator; 13, access door; 14, handle; 31, driving motor; 32, driving belt; 33, driving shaft; 34, grinding roller; 41, feeding frame; 42, conveying shaft; 43, conveying blade; 44, bulk material plate; 45, driving box. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "vertical", "upper", "lower", "horizontal" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0022] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] Please refer to Figures 1-4The utility model provides a technical scheme: the utility model discloses a grain powder grinding screening device, which comprises: a mounting frame 1, a powder grinding box 2 is arranged above the mounting frame 1; a powder grinding assembly 3 is connected inside the powder grinding box 2; a feeding assembly 4 is arranged and connected below the powder grinding assembly 3; a screening frame 5 is connected below the feeding assembly 4; a first screen 6 is connected inside the screening frame 5; a second screen 7 is connected below the first screen 6, and a plurality of partition plates 8 are arranged on the second screen 7; a crushing ball 9 is arranged between adjacent partition plates 8; a first discharge pipe 10 is arranged on one side of the screening frame 5; the first discharge pipe 10 is located on one side of the first screen 6; a second discharge pipe 11 is arranged below the screening frame 5; the second discharge pipe 11 is located below the second screen 7; and a vibrator 12 is detachably connected below the screening frame 5.

[0024] In the embodiment, the grain added to the powder grinding box 2 can be ground by the powder grinding assembly 3, the milled powder can be sent into the screening frame 5 by controlling the feeding assembly 4, the powder can be screened by the first screen 6, the particles that have not been milled can flow out through the first discharge pipe 10 for recycling, the powder can pass through the first screen 6 and enter the second screen 7, the multiple crushing balls 9 between the partition plates 8 on the second screen 7 can collide with each other to further perform the crushing and scattering functions when the powder passes through, so that the crushing and milling precision is improved, and the powder can flow out through the second discharge pipe 11 after passing through the second screen 7 for collection, so that the fine screening is realized while the efficient crushing is realized, and the production efficiency and product quality are improved.

[0025] The vibrator 12 is installed below the screening frame 5, which can effectively screen the material between the screens, reduce the blockage, improve the screening efficiency, improve the flowability of the material passing through the screen, and ensure that the fine powder can pass through quickly.

[0026] As shown in Figure 1 and Figure 2 , the powder grinding assembly 3 comprises a driving motor 31, the driving motor 31 is connected with a driving shaft 33 through a driving belt 32, the driving shaft 33 is provided with a powder grinding roller 34 located inside the powder grinding box 2; the driving motor 31 can drive the driving shaft 33 and the powder grinding roller 34 to rotate, so that the grain added to the powder grinding box 2 can be milled and processed.

[0027] As shown in Figure 2 and Figure 4As shown, the feeding assembly 4 includes a feeding frame 41, a conveying shaft 42 is arranged inside the feeding frame 41, a conveying blade 43 and a scattering plate 44 are arranged on the conveying shaft 42, one end of the conveying shaft 42 is connected with a driving box 45, the conveying blade 43 is located directly below the grinding box 2, and the scattering plate 44 is located directly above the screening frame 5; by controlling the driving box 45 to work, the conveying shaft 42 can be driven to rotate, the conveying blade 43 and the scattering plate 44 are driven to rotate, by rotating the conveying blade 43, the powder falling from the inside of the grinding box 2 can be sent to above the screening frame 5, so that the material below the grinding box 2 is prevented from being blocked, by rotating the scattering plate 44, the conveying blade 43 can be sent to scatter the powder and then fall into the screening frame 5 for screening, and the screening effect is enhanced.

[0028] As shown in Figure 3 and Figure 4 , the screening frame 5 is provided with an access door 13, the access door 13 is provided with a handle 14, and the mounting frame 1 is provided with a control box and a control panel; the first screen 6, the second screen 7, the partition plate 8 and the crushing ball 9 inside the screening frame 5 can be conveniently overhauled and replaced through the access door 13, and the access door 13 can be conveniently opened and closed through the handle 14.

[0029] As shown in Figure 1 and Figure 3 , the aperture of the first screen 6 is larger than that of the second screen 7, and the spacing between the first screen 6 and the second screen 7 is 1.5-2 times the diameter of the crushing ball 9; a plurality of partition plates 8 are arranged at equal intervals between the first screen 6 and the second screen 7, and the crushing ball 9 can be uniformly placed through the partition plates 8, so that the crushing ball 9 is not gathered at the discharge port, and the practicability of the device is enhanced.

[0030] As shown in Figure 1 and Figure 3 , the partition plate 8 is made of a polytetrafluoroethylene plate, and the crushing ball 9 is made of a zirconium ball; the polytetrafluoroethylene plate and the zirconium ball do not contain magnetic substances, so that magnetic substances are not introduced into the powder.

[0031] Working principle: the grain added to the inside of the grinding box 2 can be ground through the grinding assembly 3, the ground powder can be sent into the screening frame 5 through the control of the feeding assembly 4, the powder can be screened through the first screen 6, the particles that have not been ground can flow out through the first discharge pipe 10 for recycling, the powder can pass through the first screen 6 and enter the second screen 7, the plurality of crushing balls 9 between the partition plates 8 on the second screen 7 can collide with each other to further crush and scatter the powder when the powder passes through, so that higher grinding precision is ensured, and after passing through the second screen 7, the powder can flow out through the second discharge pipe 11 for collection, so that efficient grinding and fine screening are realized at the same time, and the production efficiency and product quality are improved.

[0032] It is to be noted that the relational terms herein, such as first and second, and the like, are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0033] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details and limit the utility model to the specific embodiments described. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and use the utility model. The utility model is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A grain grinding and screening device, characterized in that, Include: The installation frame (1) is provided with a grinding box (2) above; Grinding assembly (3), the grinding assembly (3) is connected inside the grinding box (2); Feeding assembly (4), the feeding assembly (4) is connected below the grinding assembly (3); Screening frame (5), the screening frame (5) is connected below the feeding assembly (4); First screen (6), the first screen (6) is connected inside the screening frame (5); Second screen (7), the second screen (7) is connected below the first screen (6), and a plurality of partition plates (8) are arranged on the second screen (7); Crushing ball (9), the crushing ball (9) is arranged between adjacent partition plates (8).

2. A grain milling and sieving apparatus as claimed in claim 1, wherein: The screening frame (5) is provided with a first discharge pipe (10) on one side, and a second discharge pipe (11) is arranged below the screening frame (5), and a vibrator (12) is detachably connected below the screening frame (5).

3. A grain milling and sorting apparatus as claimed in claim 1, wherein: The grinding assembly (3) includes a driving motor (31), the driving motor (31) is connected with a driving shaft (33) through a driving belt (32), and a grinding roller (34) is arranged on the driving shaft (33) inside the grinding box (2).

4. A grain milling and sorting apparatus as claimed in claim 1, wherein: The feeding assembly (4) includes a feeding frame (41), a conveying shaft (42) is arranged inside the feeding frame (41), conveying blades (43) and bulk material plates (44) are arranged on the conveying shaft (42), and one end of the conveying shaft (42) is connected with a driving box (45).

5. A grain milling and sieving apparatus as claimed in claim 4, wherein: The conveying blades (43) are located directly below the grinding box (2), and the bulk material plates (44) are located directly above the screening frame (5).

6. A grain milling and sorting apparatus as claimed in claim 1, wherein: The screening frame (5) is provided with an access door (13), and the access door (13) is provided with a handle (14).

7. A grain milling and sorting apparatus as claimed in claim 1, wherein: The aperture of the first screen (6) is larger than that of the second screen (7), and the distance between the first screen (6) and the second screen (7) is 1.5-2 times the diameter of the crushing ball (9).

8. A grain milling and sorting apparatus as claimed in claim 1, wherein: The partition plate (8) is made of polytetrafluoroethylene plate, and the crushing ball (9) is made of zirconium ball.

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