Multistage screening device for highland barley flour

Abstract

The utility model provides a multi-stage screening device for highland barley flour, which comprises a storage hopper and a shell which are communicated with each other and fixedly connected, a quantitative discharging mechanism for quantitative feeding is arranged on the inner side of the bottom of the storage hopper, and a multi-stage screening piece is arranged in the shell. The quantitative discharging mechanism comprises a base roller rotationally connected to the inner side of the storage hopper through a rotating shaft and a plurality of storage grooves formed in the radial direction of the base roller, a motor is fixed to the outer wall of the storage hopper through a support, and an output shaft of the motor is in transmission fit with the outer wall of the rotating shaft through a synchronous assembly. The quantitative discharging mechanism is arranged and composed of the base roller and the storage grooves formed in the side wall of the base roller, discharging is achieved through rotation of the storage grooves, the rotating speed of the motor is controlled through the frequency converter to control the rotating speed of the base roller, and therefore control over the discharging speed is achieved, it is guaranteed that the discharging speed is synchronous with the screening speed, and the screening efficiency is improved. And the screening efficiency is improved while the screening sufficiency is ensured.

Description

Technical Field

[0001] This utility model relates to the field of screening technology, and in particular to a multi-stage screening device for highland barley flour. Background Technology

[0002] After the barley flour is initially ground into powder, it needs to be sieved to separate into powders of different coarseness depending on the intended use.

[0003] A search revealed a Chinese patent publication number CN108144845A, which discloses a multi-stage screening device for highland barley feed. The device includes a base, a motor housing fixedly installed on the left side of the top of the base, a base block fixedly installed at the bottom of the inner cavity of the motor housing, a servo motor fixedly installed at the top of the base block, a first gear fixedly fitted at one end of the output shaft of the servo motor, a movable shaft movably fitted inside the motor housing, one end of the movable shaft penetrating and extending to the outside of the front of the motor housing, and a transmission plate fixedly fitted at the end of the movable shaft outside the motor housing.

[0004] The aforementioned patent has the following shortcomings: it cannot accurately control the feeding speed. If the feeding speed is greater than the screening speed, it will lead to insufficient screening. If the feeding speed is less than the screening speed, it will lead to low screening efficiency.

[0005] To address this, a multi-stage screening device for highland barley flour is proposed. Utility Model Content

[0006] In view of this, the present invention aims to provide a multi-stage screening device for highland barley flour to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial alternative.

[0007] The technical solution of this utility model embodiment is implemented as follows: A multi-stage screening device for highland barley flour includes a storage hopper and a shell that are interconnected and fixedly connected. A quantitative feeding mechanism for quantitative feeding is provided on the inner bottom of the storage hopper. A multi-stage sieve is provided inside the shell. The quantitative feeding mechanism includes a base roller rotatably connected to the inner side of the storage hopper via a rotating shaft and a plurality of storage troughs opened radially on the base roller. An electric motor is fixed to the outer wall of the storage hopper by a bracket. The output shaft of the electric motor is driven and engaged with the outer wall of the rotating shaft through a synchronization component.

[0008] In some embodiments, the quantitative feeding mechanism further includes a scraper disposed inside the storage trough and a central shaft coaxially arranged inside the base roller. One end of the central shaft is fixed to the inner wall of the storage trough, the scraper is slidably connected to the radial side of the base roller via a slide rod, the other end of the slide rod is fixed to a limit rod, a limit plate is fixed to the outer wall of the central shaft, a cam groove is provided on the inner wall of the limit plate, and the end of the limit rod is movably limited and matched to the inner side of the cam groove.

[0009] In some embodiments, the protruding portion of the cam groove faces the bottom.

[0010] In some embodiments, the multi-stage sieve plate is composed of multiple "V"-shaped sieves arranged longitudinally on the inner sidewall of the housing, and the sieve holes of the multiple "V"-shaped sieves gradually decrease from top to bottom. The housing is provided with discharge ports at both ends of the "V"-shaped sieves, and a material guiding channel for guiding the material discharge is fixed on the outside of the discharge port.

[0011] In some embodiments, the top tip of the "V"-shaped sieve is rotatably connected to the inner wall of the housing via a sieve shaft.

[0012] In some embodiments, both ends of the "V"-shaped screen are connected to the bottom inner side of the discharge port by elastic rubber seals.

[0013] In some embodiments, a turntable is fixed to the outer wall of the rotating shaft, a connecting rod is rotatably connected to the eccentric part of the turntable, and a rack is rotatably connected to the other end of the connecting rod. The rack is longitudinally slidably connected to the side wall of the housing.

[0014] In some embodiments, the outer wall of the screen shaft is connected to gears by a key, and multiple gears mesh with the same side of the rack.

[0015] The present invention has the following advantages due to the adoption of the above technical solution:

[0016] 1. A multi-stage screening device for highland barley flour, comprising a quantitative feeding mechanism consisting of a base roller and multiple storage troughs disposed on the side wall of the base roller. The feeding is achieved by rotating the storage troughs, and the rotation speed of the base roller is controlled by a frequency converter to control the speed of the motor, thereby controlling the feeding speed and ensuring that the feeding speed is synchronized with the screening speed, thus ensuring sufficient screening and increasing screening efficiency.

[0017] 2. A multi-stage screening device for highland barley flour, which, based on quantitative and speed-controlled feeding, is equipped with a scraper that can push out the highland barley flour stored in the storage tank during discharge, thereby ensuring the smoothness and thoroughness of discharge and further increasing the control accuracy of the feeding speed.

[0018] 3. A multi-stage screening device for highland barley flour, which achieves separation of various coarse and fine flours through multi-stage screening, adopts a "V"-shaped arrangement for the "V"-shaped screen, which can screen simultaneously from both sides, thereby increasing the screening speed. In addition, the "V"-shaped screen is arranged in a rotating manner, which can vibrate and rotate back and forth, further increasing the smoothness and speed of screening. At the same time, the discharge port is set to seal between the "V"-shaped screen and the discharge port, preventing cross-contamination of highland barley flour of different coarsenesses.

[0019] 4. A multi-stage screening device for highland barley flour, based on the left-right swinging vibration of a "V"-shaped sieve and the rotating shaft for feeding, by setting up components such as connecting rods, racks, and gears, so that the feeding speed is synchronized with the swinging vibration screening speed of the "V"-shaped sieve, further ensuring the fullness of screening while increasing screening efficiency.

[0020] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is an overall structural diagram of the present invention;

[0023] Figure 2 This is a cross-sectional view of the quantitative feeding mechanism of this utility model;

[0024] Figure 3 This is a structural diagram of the cam groove and the limiting rod of this utility model.

[0025] Figure 4 This is a cross-sectional view of the multi-stage sieve structure of this utility model;

[0026] Figure 5 This is a structural diagram of the transmission part of this utility model.

[0027] Figure label:

[0028] 1-Storage hopper, 2-Shell, 3-Multi-stage screen, 4-Quantitative feeding mechanism, 5-Base roller, 6-Rotating shaft, 7-Central shaft, 8-Limiting plate, 9-Limiting rod, 10-Storage trough, 11-Scraper, 12-Sliding rod, 13-Cam groove, 14-“V” type screen, 15-Elastic rubber sealing plate, 16-Discharge port, 17-Guiding discharge channel, 18-Synchronization component, 19-Bracket, 20-Motor, 21-Turntable, 22-Connecting rod, 23-Rack and pinion, 24-Gear, 25-Screen shaft. Detailed Implementation

[0029] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0032] Example 1:

[0033] like Figures 1-5 As shown, a multi-stage screening device for highland barley flour includes a storage hopper 1 and a shell 2 that are interconnected and fixedly connected. The bottom inner side of the storage hopper 1 is provided with a quantitative feeding mechanism 4 for quantitative feeding, and the shell 2 is provided with multi-stage screen plates 3 inside.

[0034] The quantitative feeding mechanism 4 includes a base roller 5 rotatably connected to the inner side of the storage hopper 1 via a rotating shaft 6 and a plurality of storage troughs 10 opened radially on the base roller 5. The outer wall of the storage hopper 1 is fixed with a motor 20 via a bracket 19. The output shaft of the motor 20 is driven and engaged with the outer wall of the rotating shaft 6 via a synchronization component 18.

[0035] This embodiment does not limit the specific type of the synchronization component 18, which can be any one of belt drive, chain drive and gear drive. In this embodiment, belt drive is preferred, and the speed of the motor 20 is controlled by a frequency converter.

[0036] When using this device, the pre-ground barley flour can be placed inside the storage hopper 1. Then, the motor 20 is started, which drives the rotating shaft 6 to rotate through the synchronization component 18, thereby driving the base roller 5 to rotate. When the base roller 5 rotates, it can continuously transport the barley flour that falls from the storage hopper 1 into the storage trough 10 to the bottom for conveying. The speed of the base roller 5 can be controlled by controlling the speed of the motor 20 through the frequency converter, thereby controlling the feeding speed.

[0037] This device uses a quantitative feeding mechanism 4, which consists of a base roller 5 and multiple storage troughs 10 located on the side wall of the base roller 5. The feeding is achieved by rotating the storage troughs 10. The speed of the base roller 5 is controlled by the speed control of the motor 20 through the frequency converter, thereby controlling the feeding speed and ensuring that the feeding speed is synchronized with the screening speed. This ensures sufficient screening while also increasing screening efficiency.

[0038] In this embodiment, the quantitative feeding mechanism 4 further includes a scraper 11 disposed inside the storage trough 10 and a central shaft 7 coaxially arranged inside the base roller 5. One end of the central shaft 7 is fixed to the inner wall of the storage hopper 1. The scraper 11 is slidably connected to the radial direction of the base roller 5 through a slide rod 12. The other end of the slide rod 12 is fixed with a limiting rod 9. The outer wall of the central shaft 7 is fixed with a limiting plate 8. A cam groove 13 is provided on the inner wall of the limiting plate 8. The end of the limiting rod 9 is movably limited and matched with the inner side of the cam groove 13, and the protruding part of the cam groove 13 faces the bottom.

[0039] When the base roller 5 rotates, the scraper 11 also rotates. The central shaft 7 is fixed, and the limiting plate 8 is also fixed. This means that when the scraper 11 rotates with the base roller 5 to the top and sides, the limiting rod 9 engages with the non-protruding part of the cam groove 13, and the scraper 11 retracts to the innermost side of the storage trough 10. At this time, the barley flour is stored inside the storage trough 10. When the scraper 11 rotates to the bottom, the limiting rod 9 engages with the protruding part of the limiting plate 8, and the scraper 11 slides outward along the storage trough 10, thereby pushing out the barley flour stored in the storage trough 10.

[0040] This device, based on quantitative and speed-controlled feeding, is equipped with a scraper 11, which can push out the barley flour stored in the storage tank 10 when discharging, thereby ensuring the smoothness and thoroughness of the discharge and further increasing the control accuracy of the feeding speed.

[0041] In this embodiment, the multi-stage sieve plate 3 is composed of multiple "V"-shaped sieves 14 arranged longitudinally on the inner side wall of the housing 2, and the sieve holes of the multiple "V"-shaped sieves 14 gradually decrease from top to bottom. The housing 2 is provided with discharge ports 16 at both ends of the "V"-shaped sieves 14, and a material guiding channel 17 for guiding the material discharge is fixed on the outside of the discharge port 16.

[0042] The top tip of the “V”-shaped sieve 14 is rotatably connected to the inner wall of the housing 2 via the sieve shaft 25, and both ends of the “V”-shaped sieve 14 are connected to the bottom inner side of the discharge port 16 via elastic rubber sealing plates 15.

[0043] The barley flour fed by the quantitative feeding mechanism 4 falls to the top of the "V"-shaped sieve 14, and then slides down from both sides of the "V"-shaped sieve 14 for screening. The barley flour that passes the screening is then screened again until it is discharged from the bottom. The barley flour that does not pass the screening is discharged through the discharge port 16 and the guide discharge channel 17 along both sides of the "V"-shaped sieve 14.

[0044] This device achieves the separation of various coarse and fine flours through multi-stage sieving. The "V"-shaped sieve 14 is arranged in a "V" shape, which can simultaneously sieve from both sides, thereby increasing the sieving speed. In addition, the "V"-shaped sieve 14 is arranged in a rotating manner, which can vibrate and rotate back and forth, further increasing the smoothness and speed of sieving. At the same time, the discharge port 16 is provided to seal between the "V"-shaped sieve 14 and the discharge port 16, preventing cross-contamination of barley flour of different coarsenesses.

[0045] In this embodiment: the pre-ground barley flour can be placed inside the storage hopper 1. Then, the motor 20 is started, which drives the rotating shaft 6 to rotate through the synchronization component 18, thereby driving the base roller 5 to rotate. When the base roller 5 rotates, the scraper 11 also rotates. The central shaft 7 is fixed, and the limiting plate 8 is also fixed. This means that when the scraper 11 rotates with the base roller 5 to the top and sides, the limiting rod 9 engages with the non-protruding part of the cam groove 13, and the scraper 11 retracts to the innermost side of the storage trough 10. At this time, the barley flour is stored inside the storage trough 10. When the scraper 11 rotates to the bottom, the limiting rod 9... In conjunction with the protrusion of the limiting plate 8, the scraper 11 slides outward along the storage trough 10, thereby pushing out the barley flour stored in the storage trough 10. The speed of the base roller 5 can be controlled by controlling the speed of the motor 20 through the frequency converter, thereby controlling the feeding speed. The barley flour fed by the quantitative feeding mechanism 4 at a constant speed falls to the top of the "V" shaped sieve 14, and then slides down from both sides of the "V" shaped sieve 14 for screening. The barley flour that passes the screening is then screened at the next stage until it is discharged from the bottom. The barley flour that does not pass the screening is discharged along both sides of the "V" shaped sieve 14 through the discharge port 16 and the guide discharge channel 17.

[0046] Example 2:

[0047] A multi-stage screening device for highland barley flour, this embodiment is based on embodiment 1 with the following improvements, such as... Figures 1-5 As shown, a turntable 21 is fixed to the outer wall of the rotating shaft 6. A connecting rod 22 is rotatably connected to the eccentric part of the turntable 21. A rack 23 is rotatably connected to the other end of the connecting rod 22. The rack 23 is longitudinally slidably connected to the side wall of the housing 2. A gear 24 is connected to the outer wall of the screen shaft 25 by a key. Multiple gears 24 mesh with the same side of the rack 23.

[0048] In this embodiment: when the rotating shaft 6 rotates to feed the material in a quantitative manner, the turntable 21 will also rotate, thereby causing the rack 23 to move up and down through the connecting rod 22, which in turn drives the screen shaft 25 and the "V"-shaped screen 14 to swing and vibrate clockwise and counterclockwise through the gear 24.

[0049] This device, based on the left and right swinging vibration of the "V"-shaped screen 14 and the rotation of the rotating shaft 6 for material feeding, by setting up components such as connecting rod 22, rack 23, and gear 24, makes the feeding speed synchronized with the swinging vibration screening speed of the "V"-shaped screen 14, further ensuring the fullness of screening while increasing screening efficiency.

[0050] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A multi-stage screening device for highland barley flour, comprising a storage hopper (1) and a shell (2) which are in communication and fixedly connected, characterized in that: The bottom inner side of the storage hopper (1) is provided with a quantitative feeding mechanism (4) for quantitative feeding. The interior of the housing (2) is provided with multi-stage sieves (3). The quantitative feeding mechanism (4) includes a base roller (5) rotatably connected to the inner side of the storage hopper (1) via a rotating shaft (6) and multiple storage troughs (10) opened radially on the base roller (5). The outer wall of the storage hopper (1) is fixed with a motor (20) via a bracket (19). The output shaft of the motor (20) is driven and engaged with the outer wall of the rotating shaft (6) via a synchronization component (18).

2. The multi-stage screening device for highland barley flour according to claim 1, characterized in that: The quantitative feeding mechanism (4) also includes a scraper (11) disposed inside the storage trough (10) and a central shaft (7) coaxially arranged inside the base roller (5). One end of the central shaft (7) is fixed to the inner wall of the storage hopper (1). The scraper (11) is slidably connected to the radial direction of the base roller (5) through a slide rod (12). The other end of the slide rod (12) is fixed with a limit rod (9). The outer wall of the central shaft (7) is fixed with a limit plate (8). The inner wall of the limit plate (8) is provided with a cam groove (13). The end of the limit rod (9) is movably limited and matched with the inner side of the cam groove (13).

3. The multi-stage screening device for highland barley flour according to claim 2, characterized in that: The protruding portion of the cam groove (13) faces the bottom.

4. The multi-stage screening device for highland barley flour according to claim 1, characterized in that: The multi-stage sieve (3) is composed of multiple "V"-shaped sieves (14) arranged longitudinally on the inner side wall of the shell (2), and the sieve holes of the multiple "V"-shaped sieves (14) gradually decrease from top to bottom. The shell (2) is provided with discharge ports (16) at both ends of the "V"-shaped sieves (14), and a material guide channel (17) for guiding the material discharge is fixed on the outside of the discharge port (16).

5. The multi-stage screening device for highland barley flour according to claim 4, characterized in that: The top tip of the "V"-shaped sieve (14) is rotatably connected to the inner wall of the shell (2) via a sieve shaft (25).

6. The multi-stage screening device for highland barley flour according to claim 5, characterized in that: Both ends of the "V"-shaped screen (14) are connected to the bottom inner side of the discharge port (16) by elastic rubber seals (15).

7. The multi-stage screening device for highland barley flour according to claim 1, characterized in that: A turntable (21) is fixed to the outer wall of the rotating shaft (6). A connecting rod (22) is rotatably connected to the eccentric part of the turntable (21). A rack (23) is rotatably connected to the other end of the connecting rod (22). The rack (23) is longitudinally slidably connected to the side wall of the housing (2).

8. A multi-stage screening device for highland barley flour according to claim 5, characterized in that: The outer wall of the sieve shaft (25) is connected to gears (24) by a key, and multiple gears (24) mesh with the same side of the rack (23).

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