Rice classification screening device based on broken rate and capable of conveniently adjusting screen drum

Abstract

The rice grading screening device comprises the screen drum, a driving shaft is coaxially arranged in the screen drum, the driving shaft is obliquely arranged upwards, the two ends of the driving shaft are rotationally installed on racks correspondingly, the bottoms of the racks are fixed to a base, and the bottom of the driving shaft is driven by a driving device to rotate; the top of the driving shaft is connected with a rotating speed sensor which is installed on the machine frame. When the rice discharging device is used, the flow rate of rice in the discharging barrel in unit time is fixed, so that the weight of the rice in the unit time can be measured according to the flow rate in the unit time, the weight of the rice entering the screen can be monitored in real time, and after the rice passes through the screen and is screened, the weight of the rice can be monitored in real time. The broken rice falls into the waiting container through the discharge port to be concentrated, so that the weight of the broken rice can be monitored in real time, the weight of the broken rice in the discharged rice in unit time can be obtained, and the broken rate can be directly obtained.

Description

Technical Field

[0001] The invention relates to the technical field of screening devices, in particular to a rice grading and screening device capable of adjusting a screen cylinder based on a broken rice content. Background Art

[0002] The broken rice rate of rice refers to the proportion of broken rice in a certain amount of rice. According to national standards, the broken rice rate of rice should not exceed 3%, that is, there can be no more than 3 grams of broken rice in every 100 grams of rice. The lower the broken rice rate, the better the quality of the rice and the more delicate the taste. Definition and classification of broken rice. The existing calculation of the broken rice content of rice is relatively complicated, that is, after the rice is sieved, the rice and broken rice are weighed separately, and then the broken rice content can be obtained. The operation process is relatively complicated and is not conducive to rapid production. To this end, we propose a rice grading and screening device that is easy to adjust the sieve cylinder based on the broken rice content. Summary of the invention

[0003] The present invention provides a rice grading and screening device which is convenient for adjusting a screen drum based on the broken rice content, has the advantage of being able to obtain the broken rice content in real time, and solves the problems raised in the above-mentioned background technology.

[0004] The technical solution of the present invention is achieved as follows: a rice grading and screening device for adjusting a screen drum based on broken rice content, comprising a screen drum, a driving shaft coaxially arranged in the screen drum, the driving shaft being arranged obliquely upward and its two ends being rotatably mounted on a frame respectively, the bottom of the frame being fixed to a base, the bottom of the driving shaft being driven to rotate by a driving device, the top of the driving shaft being connected to a speed sensor, the speed sensor being mounted on the frame, a feeding hopper being arranged at the bottom of the screen drum, the feeding hopper being connected to the base through a plurality of brackets, a discharging port being arranged at the bottom of the feeding hopper, a weighing sensor being arranged on the base below the discharging port, a feeding container being placed on the weighing sensor, a discharging drum being arranged at the top of the screen drum, an ultrasonic flowmeter being arranged on the side of the discharging drum, an arc-shaped material guide trough being obliquely arranged at the bottom of the discharging drum extending into the screen drum, the top of the discharging drum being mounted at the lower end of the discharging port of a spiral conveying drum, the feeding port at the bottom of the spiral conveying drum being connected to the bottom of a material holding box, and the bottom of the material holding box being fixed to the base through a plurality of supporting legs.

[0005] Preferably, a sealing cover is provided at the bottom of the discharge barrel, and the edge of the sealing cover is rotatably connected to the edge of the bottom of the discharge barrel so that the sealing cover can be opened and closed freely, and the free end of the sealing cover is connected to the side of the discharge barrel through an elastic pulling component, and driven by the elastic pulling component, the sealing cover seals the bottom of the discharge barrel, and the elastic pulling component includes a second connecting seat installed at the bottom of the free end of the sealing cover, and both ends of the second connecting seat extend to the outside of the discharge barrel respectively, and a support is installed on the side of the discharge barrel, and a first connecting seat is provided at the end of the support, and the two ends of the first connecting seat and the second connecting seat are connected respectively by a tensioning spring, and the tensioning spring stretches the sealing cover to the bottom of the discharge barrel.

[0006] Preferably, flanges are provided at the top of the discharge barrel and the lower end of the discharge port, respectively, and the two flanges are detachably connected.

[0007] Preferably, a certain distance is provided between the arc-shaped material guiding trough and the sealing cover, and connecting frames are respectively connected to both sides of the top of the arc-shaped material guiding trough, and the top of the connecting frames is detachably connected to the side of the discharge barrel.

[0008] Preferably, the top of the feed port is connected to the support tube, and the support tube is arranged at the bottom of the material holding box.

[0009] Preferably, a support frame is also installed in the middle of the spiral conveying cylinder, and the support frame is fixed on the base.

[0010] Preferably, it is characterized in that the screen cylinder includes a plurality of support rings coaxially arranged outside the driving shaft, the support rings are connected to the driving shaft through a plurality of support arms, a screen is provided between two adjacent support rings, and both sides of the screen are sealed and fixed to the support rings respectively.

[0011] Preferably, a material bin parallel to the drive shaft is provided on the top of the material hopper, the bottom of the screen drum is placed in the material bin, a discharge channel is provided at the bottom of the material bin, the discharge channel is located below the bottom of the screen drum, and a sealing cover is detachably provided on the top of the material bin, which covers the top of the screen drum.

[0012] Preferably, it also includes a control cabinet, in which a controller is arranged, and the controller is respectively connected to the ultrasonic flow meter, the driving device, the weighing sensor, and the spiral conveying cylinder.

[0013] Compared with the prior art, when the present invention is used, since the flow rate of rice in the discharge barrel per unit time is constant, the weight of rice per unit time can be measured according to the flow rate per unit time, so the weight of rice entering the screen can be monitored in real time, and when the rice is sieved through the screen, the broken rice falls into the equal material container through the discharge port and is concentrated, so that the weight of the broken rice can also be monitored in real time, so that the weight of the broken rice in the discharged rice per unit time can be obtained, thereby directly obtaining the broken rice content. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 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.

[0015] Figure 1 The structure of the present invention is schematically shown Figure 1 .

[0016] Figure 2 The structure of the present invention is schematically shown Figure 2 .

[0017] Figure 3 It is a specific structural diagram of the screen drum of the present invention.

[0018] Figure 4 It is a specific structural diagram of the discharge barrel of the present invention.

[0019] In the figure: 1. spiral conveying cylinder; 2. supporting cylinder; 3. feeding port; 4. discharging port; 5. flange; 6. ultrasonic flowmeter; 7. support; 8. first connecting seat; 9. tension spring; 10. unloading cylinder; 11. second connecting seat; 12. connecting frame; 13. arc-shaped material guide trough; 14. sealing cover; 15. material box; 16. supporting leg; 17. control cabinet; 18. supporting frame; 19. sealing cover; 20. connecting edge; 21. material storage bin; 22. driving shaft; 23. speed sensor; 24. material hopper; 25. discharging port; 26. bracket; 27. frame; 28. material container; 29. ​​weighing sensor; 30. driving motor; 31. discharging channel; 32. screen; 33. supporting ring; 34. supporting arm; 35. base. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be clearly and completely described below in conjunction with 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 creative work are within the scope of protection of the present invention.

[0021] Reference Figures 1 to 4 The present invention provides a technical solution: a rice grading and screening device that is easy to adjust the screen drum based on the broken rice content, comprising a discharge barrel 10, an ultrasonic flow meter 6 is arranged on the side of the discharge barrel 10, and the discharge barrel 10 is made of wave-transmitting material, such as stainless steel or aluminum alloy, or a hole is opened on the discharge barrel 10, and the transmitting end of the ultrasonic flow meter 6 is installed in the hole. Specifically, a flange is provided on the surface of the outer shell of the ultrasonic flow meter 6, and the flange is fixed to the side of the discharge barrel 10 by bolts, so that the ultrasonic wave emitted by the ultrasonic flow meter 6 enters the inside of the discharge barrel 10.

[0022] A sealing cover 14 is provided at the bottom of the discharge barrel 10, and the edge of the sealing cover 14 is rotatably connected to the edge of the bottom of the discharge barrel 10, and the two are rotatably connected through a hinge or an articulated seat, so that the sealing cover 14 can be opened and closed freely, and the maximum opening angle of the sealing cover 14 can at least allow the bottom of the discharge barrel 10 to be fully opened. The free end of the sealing cover 14 is connected to the side of the discharge barrel 10 through an elastic lifting component, and the elastic lifting component includes a second connecting seat 11 installed at the bottom of the free end of the sealing cover 14, and the two ends of the second connecting seat 11 extend to the outside of the discharge barrel 10 respectively. A support 7 is installed on the side of the discharge barrel 10, and a first connecting seat 8 is provided at the end of the support 7. The first connecting seat 8 is located above the second connecting seat 11 and the two are parallel, and the first connecting seat 8 and the second connecting seat 11 are both cylindrical. The first connection seat 8 and the second connection seat 11 are connected at both ends by a tension spring 9, which is always in a stretched state, so that the tension spring 9 always pulls the sealing cover 14, so that the sealing cover 14 is always stretched to the bottom of the discharge barrel 10 under the drive of the tension spring 9, that is, under the drive of the elastic lifting component, the sealing cover 14 seals the bottom of the discharge barrel 10. Both ends of the first connection seat 8 and the second connection seat 11 are located outside the discharge barrel 10, so that the tension spring 9 will not block the rice discharge.

[0023] The top of the discharge barrel 10 is installed at the lower end of the discharge port 4 of the spiral conveyor barrel 1. Specifically, flanges 5 are provided at the top of the discharge barrel 10 and the lower end of the discharge port 4, respectively. The two flanges 5 are detachably connected and fastened by bolts. A certain amount of pressure is required to open the sealing cover 14, that is, when in use, the rice is conveyed upward by the spiral conveyor barrel 1. When the rice enters the discharge port 4, it eventually falls into the discharge barrel 10. When the rice in the discharge barrel 10 is full, as the spiral conveyor barrel 1 gradually conveys the rice upward, the rice in the discharge barrel 10 expands toward its bottom, thereby pushing open the sealing cover 14 and allowing the rice to fall from the bottom of the discharge barrel 10.

[0024] As the spiral conveyor 1 continuously transports upward, the rice also continuously falls from the bottom of the discharge barrel 10. It should be emphasized that in this process, the rice always fills the entire discharge barrel 10, and there will not be a large space in the discharge barrel 10, so the ultrasonic flow meter 6 measures the flow rate of the rice flowing down in the discharge barrel 10 more accurately;

[0025] It is additionally noted here that when the flow rate sensor is measuring, the pipeline must be filled with medium, because the working principle of the flow meter determines that the pipeline must be filled with medium to accurately measure the flow rate. If the pipeline is not filled with medium or the medium is not full, then the amount of medium passing through per unit time is uncertain, which may cause inaccurate measurement results. Therefore, the rice in the discharge barrel 10 must be filled before its falling flow rate can be accurately measured.

[0026] Furthermore, the feed port 3 at the bottom of the spiral conveyor cylinder 1 is connected to the bottom of the material holding box 15, and a plurality of support legs 16 are provided at the bottom of the material holding box 15, and the support legs 16 are connected to the base 35, and the spiral conveyor cylinder 1 is arranged to be tilted upward. Specifically, the top of the feed port 3 is connected to the support cylinder 2, and the support cylinder 2 is arranged at the bottom of the material holding box 15. When in use, the support cylinder 2 is connected to the inside of the material holding box 15, so that the rice in the material holding box 15 flows into the support cylinder 2, and then the rice in the support cylinder 2 falls into the feed port 3 and is lifted by the spiral conveyor cylinder 1.

[0027] Furthermore, after the sealing cover 14 at the bottom of the discharge barrel 10 is opened, in order to concentrate the rice discharged, an arc-shaped guide groove 13 is provided below the discharge barrel 10. The arc-shaped guide groove 13 is arranged to be inclined downward, and a certain distance is provided between the arc-shaped guide groove 13 and the sealing cover 14, and the distance is used for the opening and closing of the sealing cover 14;

[0028] The two sides of the top of the arc-shaped guide chute 13 are respectively connected with connecting frames 12 , and the tops of the connecting frames 12 are detachably connected to the sides of the discharge barrel 10 , and the two are fastened by bolts, so that the rice discharged from the bottom of the discharge barrel 10 flows into the arc-shaped guide chute 13 .

[0029] The present invention includes a screen drum, such as Figure 3 As shown, the screen drum includes a plurality of support rings 33 coaxially arranged outside the drive shaft 22, the support rings 33 are connected to the drive shaft 22 via a plurality of support arms 34, a screen 32 is provided between two adjacent support rings 33, and both sides of the screen 32 are sealed and fixed to the support rings 33 respectively;

[0030] The drive shaft 22 is arranged upwardly and its two ends are rotatably mounted on the frame 27. The bottom of the frame 27 is fixed to the base 35. The bottom of the drive shaft 22 is driven to rotate by a driving device. The driving device is a driving motor 30 arranged at the bottom of the drive shaft 22. Pulleys are installed on the rotating shaft of the driving motor 30 and the bottom of the drive shaft 22. The two pulleys are connected by a belt.

[0031] like Figure 1 and Figure 2 As shown, the top of the driving shaft 22 is connected to the speed sensor 23, and the speed sensor 23 is installed on the frame 27. The speed sensor 23 can accurately monitor the speed of the driving shaft 22, that is, the speed of the screen drum, so as to facilitate the adjustment of the speed of the screen drum;

[0032] Sieve Figure 1As shown, a feed hopper 24 is provided at the bottom of the cylinder, and the feed hopper 24 is connected to a base 35 through a plurality of brackets 26. A feed bin 21 parallel to the driving shaft 22 is provided at the top of the feed hopper 24. The bottom of the screen cylinder is placed in the feed bin 21. A discharge channel 31 is provided at the bottom of the feed bin 21. The discharge channel 31 is located below the bottom of the screen cylinder. A sealing cover 19 is detachably provided at the top of the feed bin 21, and the sealing cover 19 covers the top of the screen cylinder.

[0033] like Figure 1 and Figure 2 As shown, a discharge port 25 is provided at the bottom of the material hopper 24, a weighing sensor 29 is provided on a base 35 below the discharge port 25, and a material container 28 is placed on the weighing sensor 29. Figure 1 and Figure 2 As shown, the discharge drum 10 is located at the top of the screen drum, and the bottom of the arc-shaped material guide trough 13 is inclined downward and extends into the top of the screen drum.

[0034] Further, based on the above embodiment, the present application further includes a control cabinet 17, in which a controller is provided, and the controller is respectively connected to the ultrasonic flow meter 6, the driving device, the weighing sensor 29, and the spiral conveying cylinder 1, and a display and operation buttons connected to the controller are provided on the surface of the control cabinet 17. During use, the discharge speed of the rice can be set, so that the rice can be discharged at a set flow rate through the controller.

[0035] In summary, the rice to be screened is stored in the material storage box 15 through the elevator or conveyor, and the spiral conveyor cylinder 1 can drive the rice to be transported to the discharge cylinder. Since the flow rate of rice in the discharge cylinder 10 per unit time is constant, the weight of the rice per unit time can be measured according to the flow rate per unit time, so the weight of the rice entering the screen 32 can be monitored in real time;

[0036] The rice is sieved through the screen 32, and the broken rice falls into the equalizing container 28 through the discharge port 25, so that the weight of the broken rice can be monitored in real time, so that the broken rice content of any weight of rice can be calculated, and the rotation speed of the screen drum can be adjusted to allow the rice to reach a better screening speed.

[0037] Based on the above embodiment, it can be further optimized that the bottom of the material holding box 15 is an inclined surface, and the support tube 2 is arranged at the bottom of the inclined surface, so that the rice can automatically flow into the support tube 2.

[0038] Based on the above embodiment, it can be further optimized that the spiral conveying cylinder 1 is connected to the base 35 through the support frame 18 so that the spiral conveying cylinder 1 can be supported sideways.

[0039] Based on the above embodiment, it can be further optimized that the bottom edge of the sealing cover 19 and the top edge of the material bin 21 are provided with a connecting edge 20, and the upper and lower connecting edges 20 are fastened by bolts.

[0040] 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 rice grading and screening device for adjusting a screen drum based on broken rice content, comprising a screen drum, a drive shaft (22) coaxially arranged in the screen drum, the drive shaft (22) being arranged obliquely upward and having two ends rotatably mounted on a frame (27), the bottom of the frame (27) being fixed to a base (35), the bottom of the drive shaft (22) being driven to rotate by a drive device, characterized in that: The top of the driving shaft (22) is connected to a rotation speed sensor (23), and the rotation speed sensor (23) is mounted on a frame (27); A material hopper (24) is provided at the bottom of the sieve drum. The material hopper (24) is connected to a base (35) through a plurality of brackets (26). A material discharge port (25) is provided at the bottom of the material hopper (24). A weighing sensor (29) is provided on the base (35) below the material discharge port (25). A material container (28) is placed on the weighing sensor (29). A discharge cylinder (10) is provided at the top of the sieve cylinder, an ultrasonic flow meter (6) is provided on the side of the discharge cylinder (10), an arc-shaped material guide trough (13) extending into the sieve cylinder is provided at an angle at the bottom of the discharge cylinder (10), the top of the discharge cylinder (10) is installed at the lower end of the discharge port (4) of the spiral conveying cylinder (1), the feed port (3) at the bottom of the spiral conveying cylinder (1) is connected to the bottom of the material holding box (15), and the bottom of the material holding box (15) is fixed to the base (35) through a plurality of support legs (16).

2. The rice grading and screening device for adjusting the screen drum based on the broken rice content according to claim 1, characterized in that: A sealing cover (14) is provided at the bottom of the discharge barrel (10). The edge of the sealing cover (14) is rotatably connected to the edge of the bottom of the discharge barrel (10), so that the sealing cover (14) can be opened and closed freely. The free end of the sealing cover (14) is connected to the side of the discharge barrel (10) through an elastic lifting component. Driven by the elastic lifting component, the sealing cover (14) seals the bottom of the discharge barrel (10). The elastic lifting assembly comprises a second connecting seat (11) installed at the bottom of the free end of the sealing cover (14), and both ends of the second connecting seat (11) extend to the outside of the discharge barrel (10) respectively; A support (7) is installed on the side of the discharge barrel (10), and a first connecting seat (8) is provided at the end of the support (7). The first connecting seat (8) and the second connecting seat (11) are connected at both ends by a tension spring (9), and the tension spring (9) stretches the sealing cover (14) to the bottom of the discharge barrel (10).

3. The rice grading and screening device for adjusting the screen drum based on the broken rice content according to claim 1, characterized in that: Flanges (5) are respectively provided at the top of the discharge barrel (10) and the lower end of the discharge port (4), and the two flanges (5) are detachably connected.

4. The rice grading and screening device for adjusting the screen drum based on the broken rice content according to claim 2, characterized in that: A certain distance is provided between the arc-shaped material guide trough (13) and the sealing cover (14), and connecting frames (12) are respectively connected to both sides of the top of the arc-shaped material guide trough (13), and the top of the connecting frame (12) is respectively detachably connected to the side of the discharge barrel (10).

5. The rice grading and screening device for adjusting the screen drum based on the broken rice content according to claim 1, characterized in that: The top of the feed port (3) is connected to the support tube (2), and the support tube (2) is arranged at the bottom of the material storage box (15).

6. The rice grading and screening device for adjusting the screen drum based on the broken rice content according to claim 1, characterized in that: A support frame (18) is also installed at the middle position of the spiral conveying cylinder (1), and the support frame (18) is fixed on the base (35).

7. The rice grading and screening device for adjusting the screen drum based on the broken rice content according to any one of claims 1 to 6, characterized in that: The screen drum comprises a plurality of support rings (33) coaxially arranged outside a driving shaft (22); the support rings (33) are connected to the driving shaft (22) via a plurality of support arms (34); a screen (32) is arranged between two adjacent support rings (33); and both sides of the screen (32) are sealed and fixed to the support rings (33) respectively.

8. The rice grading and screening device for adjusting the screen drum based on the broken rice content according to claim 7, characterized in that: A material bin (21) parallel to the driving shaft (22) is provided on the top of the material bin (24), and the bottom of the screen drum is placed in the material bin (21); A discharge channel (31) is provided at the bottom of the material storage bin (21), and the discharge channel (31) is located below the bottom of the screen drum; A sealing cover (19) is detachably provided on the top of the material bin (21), and the sealing cover (19) covers the top of the screen drum.

9. The rice grading and screening device for adjusting the screen drum based on the broken rice content according to claim 8, characterized in that: The invention also comprises a control cabinet (17), wherein a controller is arranged in the control cabinet (17), and the controller is respectively connected to the ultrasonic flow meter (6), the driving device, the weighing sensor (29), and the spiral conveying cylinder (1).

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