Dynamic impurity removal system of grain conveyor

Abstract

The invention relates to the technical field of grain processing, and discloses a grain conveyor dynamic impurity removal system which comprises the steps that S1, preliminary impurity removal is conducted on grains through a multi-stage screening device, and the size of screen holes is dynamically adjusted according to real-time yield data; s2, thickness grading is conducted on the screened grains through a thickness grading machine, and immature grains are separated; s3, a two-stage color sorting system is adopted for detecting and removing different-color grains of the grains subjected to thickness grading; s4, the grains subjected to color sorting are polished through a step-by-step polishing device, and broken rice generated in the polishing process is synchronously removed; s5, in the whole impurity removal process, monitoring and adjusting parameters of each process in real time through the central control unit to realize dynamic adjustment; the self-adaptive screening device is arranged, the screen holes are automatically switched according to the yield, high-pressure airflow pulse unblocking is combined, the screening efficiency is improved, meanwhile, under the synergistic effect of the long screen holes and the variable-frequency speed-regulating screen drum, thickness grading screening can be conducted, and the separation precision of immature particles is improved.

Description

Technical Field

[0001] The present application relates to the field of grain processing technology, and in particular to a dynamic impurity removal system for a grain conveyor. Background Art

[0002] There are many kinds of grains, such as rice, wheat, corn, etc., among which rice is the most common. Rice is very popular among people because of its rich nutrition and reasonable price. It has always occupied a major position in the granary. Paddy rice is processed into rice, and rice is cooked and presented on the table in different forms, which is very popular and recognized by people.

[0003] Based on the characteristics of rice and the comparison between the old and new rice processing technologies, combined with the needs of the modern rice processing market, the new rice processing technology can be further promoted and applied.

[0004] The above information disclosed in this background technology is only used to increase the understanding of the background technology of this application. Therefore, it may contain information that does not constitute the prior art known to ordinary technicians in this field. Summary of the Invention

[0005] In order to solve the above-mentioned problems, the present application provides a dynamic impurity removal system for a grain conveyor.

[0006] The present application provides a dynamic impurity removal system for a grain conveyor adopts the following technical solution:

[0007] A dynamic impurity removal system for a grain conveyor comprises the following steps:

[0008] S1: Preliminary impurity removal of grains through a multi-stage screening device, with the sieve size dynamically adjusted based on real-time yield data;

[0009] S2: Use a thickness sorter to grade the grain after screening to separate immature grains;

[0010] S3: A two-stage color sorting system is used to detect and remove off-color grains after thickness grading;

[0011] S4: Polishing the color-sorted grains through a step-by-step polishing device, while simultaneously removing broken grains generated during the polishing process;

[0012] S5: During the entire impurity removal process, the central control unit monitors and adjusts the parameters of each process in real time to achieve dynamic adjustment.

[0013] Preferably, in step S1, the multi-stage screening device includes a first screen and a second screen arranged in parallel, with screen hole sizes of 13mm×13mm and 11mm×11mm respectively. The screens are automatically switched according to real-time production data, and the screens are self-cleaned by high-pressure airflow pulses.

[0014] Preferably, in step S2, the thickness sorter uses a specially made long sieve drum with a sieve hole width of 1.53-1.64 mm and a length of 24-31 mm. The sieve drum speed is controlled to 36-44 rpm by a variable frequency speed regulating motor, and the inclination angle is 9°-13° to ensure that the contact time between the material and the screen surface is ≥2.5 seconds.

[0015] Preferably, in step S3, the two-stage color sorting system includes a first color sorter and a second color sorter;

[0016] The first color sorter uses a 540nm wavelength LED light source to detect yellow rice, and the second color sorter uses a 650nm wavelength laser to detect white rice and off-color rice. The rice flow is flipped and dispersed between the two color sorting processes through an airflow assist device.

[0017] Preferably, in step S4, the step-by-step polishing device includes a first polishing chamber and a second polishing chamber;

[0018] The speed of the built-in sand roller in the first polishing chamber is 800-1000rpm, and the speed of the built-in polishing wheel in the second polishing chamber is 400-600rpm. Broken rice is removed through a 1.2mm×1.2mm sieve between the two polishings, and grains from different origins are mixed in proportion through a rice mixing device.

[0019] Preferably, in step S5, the central control unit realizes coordinated control of each process through a parameter adjustment module, and uses a neural network algorithm to optimize key parameters such as screening efficiency, broken rice rate, and residual amount of off-color grains in real time, and the system response time is ≤200ms.

[0020] Preferably, an environmental protection treatment step is also included, in which the dust generated during the screening and polishing process is collected by a pulse dust collector, and the emission concentration is ≤10mg / m 3 The equipment noise is reduced to ≤80dB through the soundproof cover, and the fiber impurities and broken rice are compressed into blocks through the waste compression device, reducing the volume to 1 / 5 of the original volume.

[0021] Preferably, a remote monitoring step is also included, in which parameters of each process are obtained in real time through a data acquisition unit, transmitted to a cloud platform via a 4G / 5G network, and remote parameter adjustment and fault warning are achieved through a mobile terminal APP.

[0022] In summary, this application has the following beneficial technical effects:

[0023] By setting up an adaptive screening device, the sieve holes are automatically switched according to the output, and combined with high-pressure airflow pulse clearing, the screening efficiency is improved. At the same time, under the coordinated action of the long sieve holes and the variable frequency speed regulation screen drum, thickness classification screening can be carried out to improve the separation accuracy of immature particles. DETAILED DESCRIPTION

[0024] The application is described in further detail below.

[0025] The present application discloses a dynamic impurity removal system for a grain conveyor, comprising the following steps:

[0026] S1: Preliminary impurity removal of grains through a multi-stage screening device, with the sieve size dynamically adjusted based on real-time yield data;

[0027] S2: Use a thickness sorter to grade the grain after screening to separate immature grains;

[0028] S3: A two-stage color sorting system is used to detect and remove off-color grains after thickness grading;

[0029] S4: Polishing the color-sorted grains through a step-by-step polishing device, while simultaneously removing broken grains generated during the polishing process;

[0030] S5: During the entire impurity removal process, the central control unit monitors and adjusts the parameters of each process in real time to achieve dynamic adjustment.

[0031] In step S1, the multi-stage screening device includes a first screen and a second screen arranged in parallel, with screen hole sizes of 13mm×13mm and 11mm×11mm respectively. The screens are automatically switched according to real-time production data, and the screens are self-cleaned by high-pressure air flow pulses.

[0032] In step S2, the thickness sorter uses a specially made long mesh screen drum with a mesh width of 1.55 mm and a length of 26 mm. The screen drum speed is controlled by a variable frequency speed regulating motor to be 38 rpm, the inclination angle is 9°, and the contact time between the material and the screen surface is 2.8 seconds.

[0033] In step S3, the two-stage color sorting system includes a first color sorter and a second color sorter;

[0034] The first color sorter uses a 540nm wavelength LED light source to detect yellow rice, and the second color sorter uses a 650nm wavelength laser to detect white rice and off-color rice. The rice flow is flipped and dispersed between the two color sorting processes through an airflow assist device.

[0035] In step S4, the step-by-step polishing device includes a first polishing chamber and a second polishing chamber;

[0036] The speed of the built-in sand roller in the first polishing chamber is 850rpm, and the speed of the built-in polishing cloth wheel in the second polishing chamber is 420rpm. Broken rice is removed through a 1.2mm×1.2mm sieve between the two polishings, and grains from different origins are mixed in proportion through a rice mixing device.

[0037] In step S5, the central control unit realizes the coordinated control of each process through the parameter adjustment module, and uses the neural network algorithm to optimize the key parameters such as screening efficiency, broken rice rate, and residual amount of different-colored grains in real time. The system response time is 180ms.

[0038] It also includes environmental protection treatment steps, and the dust generated by the screening and polishing process is collected by a pulse dust collector with an emission concentration of 8mg / m 3 The equipment noise is reduced to 60dB through the soundproof cover, and the fiber impurities and broken rice are compressed into blocks through the waste compression device, reducing the volume to 1 / 5 of the original volume.

[0039] It also includes remote monitoring steps, which obtain the parameters of each process in real time through the data acquisition unit, transmit them to the cloud platform via the 4G / 5G network, and realize remote parameter adjustment and fault warning through the mobile terminal APP.

[0040] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0041] Secondly: In the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0042] Finally: 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 principles of the present invention should be included in the scope of protection of the present invention.

[0043] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A dynamic impurity removal system for a grain conveyor, characterized in that: The following steps are involved: S1: Preliminary impurity removal of grains through a multi-stage screening device, with the sieve size dynamically adjusted based on real-time yield data; S2: Use a thickness sorter to grade the grain after screening to separate immature grains; S3: A two-stage color sorting system is used to detect and remove off-color grains after thickness grading; S4: Polishing the color-sorted grains through a step-by-step polishing device, while simultaneously removing broken grains generated during the polishing process; S5: During the entire impurity removal process, the central control unit monitors and adjusts the parameters of each process in real time to achieve dynamic adjustment.

2. A dynamic impurity removal system for a grain conveyor according to claim 1, characterized in that: In step S1, the multi-stage screening device includes a first screen and a second screen arranged in parallel, with screen hole sizes of 13mm×13mm and 11mm×11mm respectively. The screens are automatically switched according to real-time production data, and the screens are self-cleaned by high-pressure air flow pulses.

3. A dynamic impurity removal system for a grain conveyor according to claim 1, characterized in that: In step S2, the thickness sorter uses a specially made long sieve drum with a sieve hole width of 1.53-1.64 mm and a length of 24-31 mm. The sieve drum speed is controlled by a variable frequency speed regulating motor to be 36-44 rpm and the inclination angle is 9°-13° to ensure that the contact time between the material and the screen surface is ≥2.5 seconds.

4. A dynamic impurity removal system for a grain conveyor according to claim 1, characterized in that: In step S3, the two-stage color sorting system includes a first color sorter and a second color sorter; The first color sorter uses a 540nm wavelength LED light source to detect yellow rice, and the second color sorter uses a 650nm wavelength laser to detect white rice and off-color rice. The rice flow is flipped and dispersed between the two color sorting processes through an airflow assist device.

5. The dynamic impurity removal system for grain conveyor according to claim 1, characterized in that: In step S4, the step-by-step polishing device includes a first polishing chamber and a second polishing chamber; The speed of the built-in sand roller in the first polishing chamber is 800-1000rpm, and the speed of the built-in polishing wheel in the second polishing chamber is 400-600rpm. Broken rice is removed through a 1.2mm×1.2mm sieve between the two polishings, and grains from different origins are mixed in proportion through a rice mixing device.

6. A dynamic impurity removal system for a grain conveyor according to claim 1, characterized in that: In step S5, the central control unit realizes the coordinated control of each process through the parameter adjustment module, and uses the neural network algorithm to optimize the key parameters such as screening efficiency, broken rice rate, and residual amount of off-color grains in real time, and the system response time is ≤200ms.

7. A dynamic impurity removal system for a grain conveyor according to claim 1, characterized in that: It also includes an environmentally friendly disposal step where dust generated by the screening and polishing processes is collected by a pulse dust collector.

8. The dynamic impurity removal system for grain conveyor according to claim 1, characterized in that: It also includes a remote monitoring step, which obtains the parameters of each process in real time through the data acquisition unit and transmits them to the cloud platform via the 4G / 5G network.