Compound crushing, vibrating and screening device

Abstract

The invention belongs to the technical field of screening devices, and particularly relates to a compound crushing and vibrating screening device which comprises a rack, a first screening mechanism, a second screening mechanism and a servo motor, and the first screening mechanism, the second screening mechanism and the servo motor are sequentially arranged on the rack from top to bottom. The servo motor is used for providing driving force for the first screening mechanism and the second screening mechanism; the first screening mechanism is used for carrying out primary crushing and vibration screening on bran and aims to separate the bran from flour; and the second screening mechanism is used for receiving the flour and the bran screened by the first screening mechanism and carrying out secondary crushing and vibration screening on the bran, so that the bran and the flour are further screened. According to the invention, bran can be crushed, vibrated and screened twice, so that the powder yield is improved, and the economic value of bran is improved; and the two screening mechanisms are stacked up and down, so that the occupied area can be reduced, and the investment and building cost can be reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of screening devices, and in particular relates to a compound crushing and vibration screening device. Background Art

[0002] Bran, also known as wheat bran or wheat bran, is a byproduct of wheat flour processing. It is wheat yellow in color and mostly in flake or powder form. There is a part of the germ (the part where wheat sprouts) at the end of the bran, which accounts for about 5-10% of the total amount of bran, and about 1 / 3-1 / 2 of it goes into the flour. The bran is divided into 6 layers, and the outer 5 layers contain more crude fiber, less nutrition, and are difficult to digest. Bran contains a large amount of B vitamins, rich in cellulose and vitamins. Its main uses are food, medicine, feed raw material, wine making, etc.

[0003] At present, flour mills can produce about 5,000 tons of wheat every day. Generally, a certain amount of flour will remain on the bran. If the bran is sold directly, its economic value will be wasted due to the low price of bran. If the flour in the bran is sieved out and sold as flour, the economic value can be greatly improved. The existing flour extraction equipment includes high square flat screen, powder extractor, bran brushing machine, bran beating machine, horizontal round screen, etc., all of which use screens to grade the materials in the processing process and extract the finished flour. However, most of these devices can only sieve the bran once, and the flour extraction rate is low. Although increasing the number of screening equipment can increase the flour extraction rate, the cost investment is large and the floor space is also large.

[0004] Therefore, a compound crushing and vibrating screening device is urgently needed to solve the above problems. Summary of the invention

[0005] In view of the above-mentioned defects in the prior art, the present invention provides a compound crushing and vibration screening device, comprising a frame, a first screening mechanism, a second screening mechanism and a servo motor, wherein the first screening mechanism, the second screening mechanism and the servo motor are arranged on the frame from top to bottom in sequence, and the servo motor is used to provide driving force for the first screening mechanism and the second screening mechanism; the first screening mechanism is used to perform initial crushing and vibration screening on bran, with the purpose of separating the bran and flour; the second screening mechanism is used to receive the flour and bran screened by the first screening mechanism, and perform secondary crushing and vibration screening on the bran, with the purpose of further screening the bran and flour.

[0006] Optionally, the frame includes four legs, which are arranged in groups of two and symmetrically on the left and right, and mounting covers are respectively provided on the outsides of the left and right groups of legs, and a cross brace is provided on the top of each leg.

[0007] Optionally, the first screening mechanism and the second screening mechanism both include a cylindrical shell that passes through from front to back, a screen frame, and a material beating assembly. End plates are provided at both left and right ends of the shell, and two pressure plates are fixed at the front and rear ends of the outer sides of the end plates. A cross beam is provided below the two pressure plates, and support springs are provided between the two pressure plates and the cross beam respectively. The cross beam is located above the two legs, and rubber springs are provided between the front and rear ends of the cross beam and the cross braces of the two legs respectively, and a pad is provided at the bottom of the rubber spring. The screen frame is provided inside the shell, and the outside of the screen frame is covered with a screen. The material beating assembly is provided inside the screen frame for crushing bran.

[0008] Optionally, the material beating assembly includes a rotating shaft, a plurality of cross braces and four material beating plates. The rotating shaft passes through the shell laterally, and the left and right ends of the rotating shaft are rotatably connected to the end plates on the corresponding sides through the first bearing, and are rotatably connected to the cross beam on the corresponding side through the second bearing. Semicircular counterweights are fixedly installed on the left and right ends of the rotating shaft, and the counterweight is located between the first bearing and the second bearing. The two counterweights are arranged opposite to each other on the left and right. A plurality of cross braces are fixed on the outside of the rotating shaft at intervals along the axial direction of the rotating shaft. Each cross brace includes a square mounting block fixed on the rotating shaft and four support rods fixed on the four end faces of the square mounting block. The four material beating plates are respectively fixed to the ends of the four support rods of the cross brace.

[0009] Optionally, a plurality of obliquely arranged pushing blocks are fixed axially to the outer edge of the punching plate.

[0010] Specifically, while improving the crushing efficiency, the powdering efficiency can also be improved.

[0011] Optionally, a first feed port is provided at the left end of the shell of the first screening mechanism, and a three-way feed pipe is connected to the top of the first feed port, a first discharge port is provided at the bottom end of the middle part of the shell of the first screening mechanism, and a discharge port is provided at the right end of the shell of the first screening mechanism; a loading port is provided at the top end of the middle part of the shell of the second screening mechanism, and the loading port is connected to the first discharge port through a first transparent hose, a second discharge port is provided at the bottom end of the middle part of the shell of the second screening mechanism, and a discharge hopper is provided at the bottom of the second discharge port, a second feed port is provided at the right end of the shell of the second screening mechanism, and the second feed port is connected to the discharge port through a second transparent hose.

[0012] Optionally, the mesh size of the sieves in the first screening mechanism and the second screening mechanism is larger than the particle size of flour and smaller than the particle size of bran; the mesh size of the sieves in the first screening mechanism and the second screening mechanism is 21-70 meshes.

[0013] Specifically, the sieve can sift the flour out of the bran.

[0014] Optionally, the servo motor is fixed between the two legs on the right side via a mounting plate.

[0015] Optionally, the rotating shaft in the material beating assembly of the first screening mechanism is connected to the rotating shaft in the material beating assembly of the second screening mechanism through a first pulley transmission structure, and the rotating shaft in the material beating assembly of the second screening mechanism is connected to the output shaft of the servo motor through a second pulley transmission structure.

[0016] The present invention also includes other components that enable a compound crushing vibration screening device to be used normally, which are all conventional technical means in the art. In addition, the devices or components not limited in the present invention all adopt conventional technical means in the art.

[0017] The working principle of the present invention is that bran is put into the screen frame and screen of the first screening mechanism through a three-way feeding pipe, and the servo motor is started to drive the rotating shafts of the first screening mechanism and the second screening mechanism to rotate. The rotation of the rotating shaft drives the cross support and the material beating plate to rotate, so as to crush and scatter the bran in the screen. During the rotation of the rotating shaft, the semicircular counterweight is also driven to revolve around the rotating shaft. Due to the limiting effect of the end plate, the pressure plate, the supporting spring, the cross beam, the rubber spring and the cross support, the screen frame and the screen are periodically vibrated up and down, so that during the crushing, vibration and screening operations of the first screening mechanism, the bran is crushed and scattered. The bran and flour are initially screened by the machine, and then the flour passes through the screen of the first screening mechanism from the middle and enters the screen frame and screen of the second screening mechanism through the first discharge port and the load port, while the bran enters the screen frame and screen of the second screening mechanism from the discharge port and the second feed port on the right. Similarly, under the crushing, vibration and screening action of the second screening mechanism, the bran and flour are screened for the second time, and finally the flour passes through the screen of the second screening mechanism and falls into the discharge hopper at the bottom and is discharged centrally, while the bran remains in the screen of the second screening mechanism to be cleaned centrally later.

[0018] The beneficial effects of the present invention are:

[0019] (1) The present invention can perform two crushing, vibration and screening processes on bran through the first screening mechanism, the second screening mechanism and the servo motor, thereby improving the flour extraction rate, which can be close to 100%, greatly improving the economic value of the bran.

[0020] (2) The present invention can reduce the floor space, investment and construction costs by stacking two screening mechanisms up and down.

[0021] (3) The present invention adds a transparent hose at the connection between the two screening mechanisms to facilitate viewing, increase the visualization function, and reduce the mildew of bran and flour, thereby reducing the probability of mildew. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a front view of the compound crushing and vibration screening device of the present invention.

[0025] Figure 3 for Figure 2 Schematic diagram of the structure after removing the right front leg and the right side mounting cover.

[0026] Figure 4 for Figure 3 Right view of .

[0027] Figure 5 It is a schematic diagram of the partial structure of the first screening mechanism of the present invention after the screen frame is removed.

[0028] Figure 6 It is a schematic structural diagram of the material beating assembly of the present invention.

[0029] In the figure: 1. First screening mechanism, 2. Second screening mechanism, 3. Servo motor, 4. Support legs, 5. Mounting cover,

[0030] 6. Cross brace, 7. Shell, 8. Screen frame, 9. Beating assembly, 10. End plate, 11. Press plate, 12. Cross beam, 13. Support spring, 14. Rubber spring, 15. Pad, 16. Rotating shaft, 17. Cross brace, 18. Beating plate, 19. First bearing, 21. Counterweight, 22. Square mounting block, 23. Support rod, 24. Pushing block, 25. First feed port, 26. Three-way feed pipe, 27. First feed port, 28. Discharge port, 29. Loading port, 30. Discharge hopper, 31. Second feed port, 32. First pulley transmission structure, 33. Second pulley transmission structure. DETAILED DESCRIPTION

[0031] The present invention is described clearly below in conjunction with the drawings and specific embodiments in the embodiments of the present invention. The description herein is only used to explain the present invention, but is not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work, any modifications, equivalent substitutions, improvements, etc., should be included in the protection scope of the present invention.

[0032] Example

[0033] like Figure 1-6As shown, the embodiment of the present invention provides a compound crushing vibration screening device, including a frame, a first screening mechanism 1, a second screening mechanism 2 and a servo motor 3. The frame includes four legs 4, which are arranged in pairs and symmetrically on the left and right, and the outsides of the left and right groups of legs 4 are respectively provided with mounting covers 5, and the top of each leg 4 is provided with a cross brace 6. The first screening mechanism 1, the second screening mechanism 2 and the servo motor 3 are arranged on the frame from top to bottom.

[0034] The first screening mechanism 1 and the second screening mechanism 2 both include a cylindrical shell 7, a screen frame 8, and a material-beating assembly 9 that penetrates from front to back. The left and right ends of the shell 7 are both provided with end plates 10. Two pressing plates 11 are fixed to the front and rear ends of the outer side of the end plate 10. A crossbeam 12 is provided below the two pressing plates 11, and supporting springs 13 are provided between the two pressing plates 11 and the crossbeam 12, respectively. The crossbeam 12 is located above the two legs 4, and the front and rear ends of the crossbeam 12 correspond to the cross braces 6 of the two legs 4. A rubber spring 14 should be provided, a pad 15 is provided at the bottom of the rubber spring 14, the screen frame 8 is arranged inside the shell 7, the outside of the screen frame 8 is covered with a screen, the mesh size of the screen is larger than the particle size of flour and smaller than the particle size of bran, the screen can screen out the flour from the bran; and the mesh size of the screen in the first screening mechanism and the second screening mechanism is 21-70 meshes. Since different manufacturers use different ratios when mixing flour, the mesh size of the screens of the two screening mechanisms will be slightly different.

[0035] The beating assembly 9 is arranged inside the screen frame 8 and is used for crushing bran; the beating assembly 9 includes a rotating shaft 16, a plurality of cross braces 17 and four beating plates 18. The rotating shaft 16 passes through the shell 7 horizontally. The left and right ends of the rotating shaft 16 are rotatably connected to the end plate 10 on the corresponding side through a first bearing 19, and are rotatably connected to the cross beam 12 on the corresponding side through a second bearing. Semicircular counterweights 21 are fixedly installed on the left and right ends of the rotating shaft 16, and the counterweights 21 are located between the first bearing 19 and the second bearing. The two counterweights 21 are arranged opposite to each other on the left and right. A plurality of cross braces 17 are fixed on the outside of the rotating shaft 16 at intervals along the axial direction of the rotating shaft 16. Each cross brace 17 includes a square mounting block 22 fixed on the rotating shaft 16 and four support rods 23 fixed on the four end faces of the square mounting block 22. The four beating plates 18 are respectively fixed to the ends of the four support rods 23 of the cross brace 17. A plurality of tilted pusher blocks 24 are fixed to the outer edge of the punching plate 18 along the axial direction, so that the crushing efficiency can be improved while the powdering efficiency can be improved.

[0036] In addition, a first feed port 25 is provided at the left end of the shell 7 of the first screening mechanism 1, and a three-way feed pipe 26 is connected to the top of the first feed port 25, a first discharge port 27 is provided at the bottom end of the middle part of the shell 7 of the first screening mechanism 1, and a discharge port 28 is provided at the right end of the shell 7 of the first screening mechanism 1; a loading port 29 is provided at the top end of the middle part of the shell 7 of the second screening mechanism 2, and the loading port 29 is connected to the first discharge port 27 through a first transparent hose, a second discharge port is provided at the bottom end of the middle part of the shell 7 of the second screening mechanism 2, and a discharge hopper 30 is provided at the bottom of the second discharge port, and a second feed port 31 is provided at the right end of the shell 7 of the second screening mechanism 2, and the second feed port 31 is connected to the discharge port 28 through a second transparent hose.

[0037] The servo motor 3 is fixed between the two right legs 4 through a mounting plate. The rotating shaft 16 in the material beating assembly 9 of the first screening mechanism 1 is connected to the rotating shaft 16 in the material beating assembly 9 of the second screening mechanism 2 through a first belt pulley transmission structure 32, and the rotating shaft 16 in the material beating assembly 9 of the second screening mechanism 2 is connected to the output shaft of the servo motor 3 through a second belt pulley transmission structure 33.

[0038] The working principle of the present invention is that bran is put into the screen frame 8 and the screen of the first screening mechanism 1 through the three-way feeding pipe 26, and the servo motor 3 is started to drive the rotating shaft 16 of the first screening mechanism 1 and the second screening mechanism 2 to rotate. The rotation of the rotating shaft 16 drives the cross support 17 and the beating plate 18 to rotate, so as to crush and scatter the bran in the screen. The pushing block 24 on the outer edge of the beating plate 18 can also play a function similar to spiral feeding, and continuously pushes the beaten bran to the discharge port 28 to facilitate unloading. During the rotation of the rotating shaft 16, the semicircular counterweight 21 is also driven to revolve around the rotating shaft 16. Due to the limiting effect of the end plate 10, the pressure plate 11, the support spring 13, the cross beam 12, the rubber spring 14 and the cross support 6, the screen frame 8 and The screen vibrates up and down periodically, so that under the crushing, vibration and screening action of the first screening mechanism 1, the bran and flour are initially screened, and then the flour passes through the screen of the first screening mechanism 1 from the middle, and enters the screen frame 8 and screen of the second screening mechanism 2 through the first discharge port 27 and the feed port 29, while the bran enters the screen frame 8 and screen of the second screening mechanism 2 from the discharge port 28 and the second feed port 31 on the right. Similarly, under the crushing, vibration and screening action of the second screening mechanism 2, the bran and flour are screened for the second time, and finally the flour passes through the screen of the second screening mechanism 2 and falls into the discharge hopper 30 at the bottom and is discharged centrally, while the bran remains in the screen of the second screening mechanism 2 to be cleaned centrally later.

[0039] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A compound crushing and vibrating screening device, comprising a frame, a first screening mechanism, a second screening mechanism and a servo motor, characterized in that: The first screening mechanism, the second screening mechanism and the servo motor are arranged on the frame from top to bottom in sequence, and the servo motor is used to provide driving force for the first screening mechanism and the second screening mechanism; the first screening mechanism is used to perform primary crushing and vibration screening on the bran, so as to separate the bran from the flour; The second screening mechanism is used to receive the flour and bran screened by the first screening mechanism, and to perform secondary crushing and vibration screening on the bran, so as to further screen the bran and flour.

2. The compound crushing and vibrating screening device according to claim 1 is characterized in that: The frame includes four legs, which are arranged in groups of two and symmetrically on the left and right. The outsides of the left and right groups of legs are respectively provided with mounting covers, and the top of each leg is provided with a cross brace.

3. The compound crushing and vibrating screening device according to claim 2 is characterized in that: The first screening mechanism and the second screening mechanism both include a cylindrical shell that passes through from front to back, a screen frame, and a material beating assembly. End plates are provided at both left and right ends of the shell, and two pressure plates are fixed at the front and rear ends of the outer sides of the end plates. A cross beam is provided below the two pressure plates, and support springs are provided between the two pressure plates and the cross beam respectively. The cross beam is located above the two legs, and rubber springs are provided between the front and rear ends of the cross beam and the cross braces of the two legs respectively, and a pad is provided at the bottom of the rubber spring. The screen frame is provided inside the shell, and the outside of the screen frame is covered with a screen. The material beating assembly is provided inside the screen frame for crushing bran.

4. The compound crushing and vibrating screening device according to claim 3 is characterized in that: The punching assembly includes a rotating shaft, a plurality of cross braces and four punching plates. The rotating shaft passes through the shell laterally. The left and right ends of the rotating shaft are rotatably connected to the end plates on the corresponding sides through the first bearing, and are rotatably connected to the cross beam on the corresponding side through the second bearing. Semicircular counterweights are fixedly installed on the left and right ends of the rotating shaft, and the counterweight is located between the first bearing and the second bearing. The two counterweights are arranged opposite to each other on the left and right. A plurality of cross braces are fixed on the outside of the rotating shaft at intervals along the axial direction of the rotating shaft. Each cross brace includes a square mounting block fixed on the rotating shaft and four support rods fixed on the four end faces of the square mounting block. The four punching plates are respectively fixed to the ends of the four support rods of the cross brace.

5. The compound crushing and vibrating screening device according to claim 4 is characterized in that: A plurality of inclined pushing blocks are fixed along the axial direction on the outer edge of the punching plate.

6. The compound crushing and vibrating screening device according to claim 5, characterized in that: A first feed port is provided at the left end of the shell of the first screening mechanism, and a three-way feed pipe is connected to the top of the first feed port, a first discharge port is provided at the bottom end of the middle part of the shell of the first screening mechanism, and a discharge port is provided at the right end of the shell of the first screening mechanism; a loading port is provided at the top end of the middle part of the shell of the second screening mechanism, and the loading port is connected to the first discharge port through a first transparent hose, a second discharge port is provided at the bottom end of the middle part of the shell of the second screening mechanism, and a discharge hopper is provided at the bottom of the second discharge port, a second feed port is provided at the right end of the shell of the second screening mechanism, and the second feed port is connected to the discharge port through a second transparent hose.

7. The compound crushing and vibrating screening device according to claim 6, characterized in that: The mesh size of the sieves in the first screening mechanism and the second screening mechanism is larger than the particle size of flour and smaller than the particle size of bran; the mesh size of the sieves in the first screening mechanism and the second screening mechanism is 21-70 meshes.

8. The compound crushing and vibrating screening device according to claim 7, characterized in that: The servo motor is secured between the two legs on the right side via a mounting plate.

9. The compound crushing and vibrating screening device according to claim 8, characterized in that: The rotating shaft in the material beating assembly of the first screening mechanism is connected to the rotating shaft in the material beating assembly of the second screening mechanism through a first pulley transmission structure, and the rotating shaft in the material beating assembly of the second screening mechanism is connected to the output shaft of the servo motor through a second pulley transmission structure.

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