Sunflower Seed Multi-stage Purification Apparatus and Method

Abstract

This invention discloses a multi-stage sunflower seed refining device and method. The device includes a material elevator and, from bottom to top, a feeding and collecting mechanism, a fourth-stage refining mechanism, a third-stage refining mechanism, a second-stage refining mechanism, and a first-stage refining mechanism. The feeding unit in the feeding and collecting mechanism feeds the sunflower seed raw material to be refined. The material elevator transports the raw material to the first-stage refining mechanism. The first-stage, second-stage, third-stage, and fourth-stage refining mechanisms sequentially screen the raw material to obtain the target sunflower seed raw material. The collecting unit in the feeding and collecting mechanism collects the target sunflower seed raw material. This invention precisely removes impurities from the raw sunflower seed raw material through multi-stage screening, achieving a high impurity removal rate, grading rate, and whole kernel rate. It boasts high impurity removal efficiency, fast separation speed, and accurate grading size, and can process large quantities of sunflower seeds for refining.

Description

Technical Field

[0001] This invention relates to the field of sunflower seed processing technology, specifically to a multi-stage sunflower seed refining device and method. Background Technology

[0002] Sunflower is one of my country's important oilseed crops, and my country is a major sunflower-growing country. Sunflower seeds are the main edible part of the sunflower, rich in bioactive components and possessing extremely high nutritional value. Sunflower seed oil has an unsaturated fatty acid content of about 90%, with linoleic acid exceeding 60%. Linoleic acid belongs to the omega-6 fatty acid family and has anti-tumor and cardiovascular disease prevention effects. Sunflower seeds are also among the seeds with a high chlorogenic acid content, containing approximately 3% chlorogenic acid. Chlorogenic acid has antioxidant properties. In addition, sunflower seeds also contain various vitamins and trace elements, which can prevent various chronic diseases and improve human immunity. Therefore, regular consumption of sunflower seeds is beneficial to health.

[0003] Sunflower seeds are nutritious and abundant, making them a thriving industry in China. However, sunflower seed processing companies often purchase large quantities of sunflower seeds at once for processing into various products. This direct use of these seeds without considering the specific characteristics of each product leads to inefficient resource utilization. Research has shown that the composition of sunflower kernels of the same variety varies depending on their kernel size. Therefore, selecting sunflower seeds of appropriate kernel size for specific product production can better utilize sunflower seed resources to produce higher-quality products and improve business efficiency.

[0004] Currently, sunflower seed screening mainly involves separating the seed shells from the kernels, rather than performing multi-stage separation based on different seed sizes. This results in poor separation efficiency and low separation effectiveness, as well as poor seed integrity after separation, which hinders the improvement of sunflower seed product quality and corporate profitability. Summary of the Invention

[0005] In view of this, the present invention provides a multi-stage sunflower seed refining device and method to solve the problems in the prior art that do not perform multi-stage refining based on different particle sizes of sunflower seeds, resulting in poor refining effect, low separation efficiency, and poor integrity of the separated seeds, which leads to the inability to improve the quality of sunflower seed products and increase enterprise benefits.

[0006] This invention provides a multi-stage sunflower seed refining device, comprising:

[0007] The material hoist and the feeding and receiving mechanism, the four-stage refining mechanism, the three-stage refining mechanism, the two-stage refining mechanism and the one-stage refining mechanism arranged from bottom to top;

[0008] The feeding and receiving mechanism includes a feeding unit and a receiving unit;

[0009] The feeding unit is used to feed the sunflower seed raw materials to be refined;

[0010] The material elevator is used to transport the sunflower seed raw material to be refined from the feeding and receiving mechanism to the primary refining mechanism;

[0011] The primary refining mechanism is used to perform a primary screening of the sunflower seed raw material to be refined transported by the material elevator to obtain primary sunflower seed raw material;

[0012] The secondary refining mechanism is connected to the discharge port of the primary refining mechanism, and is used to collect the primary sunflower seed raw material and perform secondary screening on the primary sunflower seed raw material to obtain secondary sunflower seed raw material.

[0013] The third-stage refining mechanism is connected to the discharge port of the second-stage refining mechanism, and is used to collect the second-stage sunflower seed raw material and perform three screenings on the second-stage sunflower seed raw material to obtain the third-stage sunflower seed raw material.

[0014] The fourth-stage refining mechanism is connected to the discharge port of the third-stage refining mechanism, and is used to collect the third-stage sunflower seed raw material and perform four screenings on the third-stage sunflower seed raw material to obtain the target sunflower seed raw material.

[0015] The receiving unit is connected to the discharge port of the four-stage refining mechanism and is used to collect the target sunflower seed raw material.

[0016] Optionally, the feeding unit includes:

[0017] The raw material feeding port is used to feed the sunflower seeds to be refined.

[0018] The raw material collector is used to collect the sunflower seed raw materials to be refined from the raw material feeding port, and moves to the feeding port of the first-stage refining mechanism under the drive of the material elevator, and puts the collected sunflower seed raw materials to be refined into the first-stage refining mechanism;

[0019] The receiving unit includes:

[0020] A first auger feeder, positioned horizontally, is connected to the outlet of the fourth-stage refining mechanism. It receives the target sunflower seed raw material, evenly divides it into multiple target seed portions, and transports these multiple target seed portions.

[0021] Multiple silos are connected to the discharge port of the first auger feeder and are used to collect the multiple target seeds transported by the first auger feeder one by one.

[0022] Optionally, the primary precision analysis mechanism includes:

[0023] A cylindrical primary cleaning screen is used to collect the sunflower seed raw material to be refined transported in the raw material collector under the drive of the material elevator, and to perform a first-stage impurity removal treatment on the sunflower seed raw material to be refined to obtain the first-grade sunflower seed raw material.

[0024] Optionally, the outer diameter of the screen opening of the cylindrical primary cleaning screen is 14-24 mm, and / or the vibration frequency of the cylindrical primary cleaning screen is 200-600 r / min.

[0025] Optionally, the secondary fractionation mechanism includes:

[0026] A second auger feeder, positioned horizontally, is connected to the outlet of the primary refining mechanism. It receives the primary sunflower seed raw material, evenly divides it into multiple first seed portions, and transports these first seed portions.

[0027] Multiple first vibrating screens are connected to the discharge port of the second auger feeder to collect the multiple first seeds transported by the second auger feeder one by one, and to remove impurities from the collected first seeds; the secondary sunflower seed raw material is obtained from all the first seeds after impurity removal.

[0028] Optionally, the outer diameter of the screen opening of each of the first vibrating screens is 2.6 to 3.4 mm, and / or the vibration frequency of each of the first vibrating screens is 400 to 800 r / min.

[0029] Optionally, the three-stage precision analysis mechanism includes:

[0030] A third auger feeder, arranged horizontally, is connected to the discharge port of the secondary fine separation mechanism. It is used to receive the secondary sunflower seed raw material, divide the secondary sunflower seed raw material into multiple second seed materials, and transport the multiple second seed materials.

[0031] Multiple cleaning screens, connected to the discharge port of the third auger feeder, are used to collect the multiple second-grade feedstocks transported by the third auger feeder one-to-one, and to remove impurities from the collected second-grade feedstocks; and

[0032] Multiple destoners, the same number as the cleaning screen, are installed one-to-one at the discharge port of the cleaning screen to collect the corresponding second seed material after impurity removal treatment, and to destone the corresponding second seed material to obtain the corresponding third seed material; the third-grade sunflower seed raw material is obtained from all the third seed materials.

[0033] Optionally, the vibration frequency of each of the cleaning screens and the vibration frequency of each of the destoners are both 800 to 1000 r / min, and / or the airflow velocity of each of the destoners is 5 to 7 m / s.

[0034] Optionally, the four-level precision analysis mechanism includes:

[0035] A fourth auger feeder, positioned horizontally, is connected to the outlet of the three-stage refining mechanism. It receives the three-stage sunflower seed raw material, divides it into multiple fourth-stage seed materials, and transports these fourth-stage seed materials.

[0036] Multiple second vibrating screens are connected to the discharge port of the fourth auger feeder to collect the multiple fourth seeds transported by the fourth auger feeder one by one, and to remove impurities from the collected fourth seeds to obtain the corresponding fifth seeds; the target sunflower seed raw material is obtained based on all the fifth seeds.

[0037] Optionally, the outer diameter of the screen opening of each of the second vibrating screens is 2 to 4 mm, and / or the vibration frequency of each of the second vibrating screens is 800 to 1200 r / min.

[0038] Furthermore, this invention also provides a method for multi-stage sunflower seed refining, which employs the aforementioned method for multi-stage sunflower seed refining, including:

[0039] The sunflower seed raw material to be refined is fed into the feeding unit of the feeding and receiving mechanism;

[0040] The sunflower seed raw material to be refined, fed into the feeding and receiving mechanism, is transported to the primary refining mechanism using a material hoist.

[0041] Using the primary refining mechanism, the sunflower seed raw material to be refined is screened once to obtain primary sunflower seed raw material;

[0042] The primary sunflower seed raw material is collected using a secondary separation mechanism, and the primary sunflower seed raw material is then screened a second time to obtain secondary sunflower seed raw material.

[0043] The secondary sunflower seed raw material is collected using a three-stage grading mechanism, and the secondary sunflower seed raw material is then screened a second time to obtain the tertiary sunflower seed raw material.

[0044] Using a four-stage fine separation mechanism, the three-stage sunflower seed raw materials are collected, and the three-stage sunflower seed raw materials are screened four times to obtain the target sunflower seed raw materials;

[0045] The target sunflower seed raw material is collected using the receiving unit in the feeding and receiving mechanism.

[0046] The beneficial effects of this invention are as follows: Through multi-stage screening using primary, secondary, tertiary, and quaternary refining mechanisms, impurities in the sunflower seed raw material to be refined can be precisely removed, and the raw material can be separated, ensuring good integrity of the sunflower seed kernels. In other words, the multi-stage refining device and method of this invention can achieve a high impurity removal rate, grading rate, and whole kernel rate for sunflower seeds. It boasts high impurity removal efficiency, fast separation speed, and precise grading size, and can process large quantities of sunflower seeds for refining. This meets the grading needs of enterprises, improves the utilization value of sunflower seeds and the production efficiency of enterprises, thereby increasing enterprise profits. Attached Figure Description

[0047] The features and advantages of the invention will be more clearly understood by referring to the accompanying drawings, which are schematic and should not be construed as limiting the invention in any way. In the drawings:

[0048] Figure 1 This diagram shows a schematic model of a multi-stage sunflower seed refining device according to Embodiment 1 of the present invention.

[0049] Figure 2 This shows a front view of the sunflower seed multi-stage refining device in Embodiment 1 of the present invention;

[0050] Figure 3 This shows a side view of the sunflower seed multi-stage refining device in Embodiment 1 of the present invention;

[0051] Figure 4 This shows a schematic diagram of the structure of the first auger feeder in Embodiment 1 of the present invention;

[0052] Figure 5 A flowchart of a multi-stage fractionation method for sunflower seeds according to Embodiment 2 of the present invention is shown.

[0053] Explanation of reference numerals in the attached figures:

[0054] 1. Feeding and receiving mechanism; 2. Fourth-stage refining mechanism; 3. Third-stage refining mechanism; 4. Second-stage refining mechanism; 5. First-stage refining mechanism; 6. Material elevator.

[0055] 11. Feeding unit; 12. Receiving unit; 21. Fourth auger distributor; 22. Second vibrating screen; 31. Third auger distributor; 32. Cleaning screen; 33. Destoner; 41. Second auger distributor; 42. First vibrating screen; 51. Cylindrical primary cleaning screen; 111. Raw material feeding port; 112. Raw material collector; 121. First auger distributor; 122. Silo; 1211. Auger rod; 1212. Spiral blade; 1213. Motor; 1214. Scraper. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] Example 1

[0058] like Figure 1 As shown, a multi-stage sunflower seed refining device includes:

[0059] The material elevator 6 and the feeding and receiving mechanism 1, the fourth-stage refining mechanism 2, the third-stage refining mechanism 3, the second-stage refining mechanism 4 and the first-stage refining mechanism 5 arranged sequentially from bottom to top;

[0060] The feeding and receiving mechanism 1 includes a feeding unit 11 and a receiving unit 12;

[0061] The feeding unit 1 is used to feed the sunflower seed raw material to be refined;

[0062] The material elevator 6 is used to transport the sunflower seed raw material to be refined from the feeding and receiving mechanism 1 to the primary refining mechanism 5;

[0063] The primary refining mechanism 5 is used to perform a primary screening of the sunflower seed raw material to be refined transported by the material elevator 6 to obtain primary sunflower seed raw material;

[0064] The secondary refining mechanism 4 is connected to the discharge port of the primary refining mechanism 5, and is used to collect the primary sunflower seed raw material and perform secondary screening on the primary sunflower seed raw material to obtain secondary sunflower seed raw material.

[0065] The third-stage refining mechanism 3 is connected to the discharge port of the second-stage refining mechanism 4, and is used to collect the second-stage sunflower seed raw material and perform three screenings on the second-stage sunflower seed raw material to obtain the third-stage sunflower seed raw material.

[0066] The fourth-stage refining mechanism 2 is connected to the discharge port of the third-stage refining mechanism 3, and is used to collect the third-stage sunflower seed raw material and perform four screenings on the third-stage sunflower seed raw material to obtain the target sunflower seed raw material.

[0067] The receiving unit 12 is connected to the discharge port of the four-stage refining mechanism 2 and is used to collect the target sunflower seed raw material.

[0068] Through multi-stage screening using primary, secondary, tertiary, and quaternary refining mechanisms, impurities in the sunflower seed raw material to be refined can be precisely removed, and the raw material can be separated, ensuring good integrity of the sunflower seed kernels. In other words, the multi-stage sunflower seed refining device of this embodiment can achieve a high impurity removal rate, grading rate, and whole kernel rate. It boasts high impurity removal efficiency, fast separation speed, and precise grading size, and can process large quantities of sunflower seeds for refining. This meets the grading needs of enterprises, improves the utilization value of sunflower seeds and the production efficiency of enterprises, thereby increasing enterprise profits.

[0069] It should be noted that since the primary, secondary, tertiary, and quaternary refining mechanisms are arranged from bottom to top, and each adjacent mechanism is interconnected, after the raw materials are processed in the upper-level refining mechanism, their own gravity can be used to transport them to the next-level refining mechanism for further processing. For example, the discharge port of the primary refining mechanism is connected to the secondary refining mechanism. The primary sunflower seed raw materials obtained after screening in the primary refining mechanism fall from the discharge port of the primary refining mechanism into the secondary refining mechanism due to their own gravity. The multi-stage refining device described above has high impurity removal efficiency, requires fewer control mechanisms, and has lower costs.

[0070] Preferably, such as Figure 2 and Figure 3 As shown, the feeding unit 11 includes:

[0071] Raw material feeding port 111 is used to feed the sunflower seed raw material to be refined;

[0072] The raw material collector 112 is used to collect the sunflower seed raw material to be refined from the raw material feeding port 111, and moves to the feeding port of the first-stage refining mechanism 5 under the driving action of the material elevator 6, and puts the collected sunflower seed raw material to be refined into the first-stage refining mechanism 5.

[0073] The receiving unit 12 includes:

[0074] A first auger feeder 121, positioned horizontally, is connected to the outlet of the fourth-stage refining mechanism 2. It receives the target sunflower seed raw material, evenly divides it into multiple target seed pieces, and transports these multiple target seed pieces.

[0075] Multiple horizontally evenly distributed silos 122 are connected to the discharge port of the first auger feeder 121 and are used to collect the multiple target seeds transported by the first auger feeder 121 one by one.

[0076] The feeding and collecting units in the feeding and collecting mechanism are both located at the bottom layer for easy feeding and collection of raw materials. For feeding, the material elevator lifts the raw material collector to the inlet of the top-level primary refining mechanism, facilitating multi-stage refining of the sunflower seeds through four screening processes from top to bottom, achieving high impurity removal, grading, and whole-kernel rates. For collecting, a horizontally positioned first auger distributor evenly distributes the target sunflower seeds. Multiple horizontally evenly distributed silos at the outlet of this first auger distributor collect the evenly distributed seeds, ensuring uniform discharge from the entire multi-stage refining device.

[0077] It should be noted that the material hoist in this embodiment can be a commonly used existing hoist, such as an auger hoist. This material hoist is located outside the raw material inlet and can move up and down along the outer sides of the feeding and collecting mechanism, the four-stage refining mechanism, the three-stage refining mechanism, the two-stage refining mechanism, and the one-stage refining mechanism arranged from bottom to top. The drive shaft of this material hoist is driven and connected to the raw material collector, thereby driving the raw material collector to move up and down. The first auger distributor and the silo also adopt existing conventional structures. The first auger distributor 121 includes a horizontally arranged auger rod 1211 and multiple evenly distributed spiral blades 1212 arranged outside the auger rod 1211. It also includes a motor 1213 and multiple scrapers 1214. The motor 1213 is located at one end of the auger rod 1211, and the drive shaft of the motor 1213 is connected to the auger rod 1211. Each scraper 1214 is arranged between two spiral blades 1212. Figure 4 As shown, the rotation of motor 1213 drives the auger rod 1211 to rotate, which in turn drives the spiral blades 1212 and scraper 1214 to move horizontally. The scraper 1214 uniformly classifies the target sunflower seed raw material transported from the outlet of the four-stage refining mechanism, and collects it correspondingly by multiple silos 122 below. Other details not covered in this embodiment will not be elaborated here. The number of silos 122 can be set according to actual conditions; for example, in this embodiment, four silos are set.

[0078] Preferably, such as Figure 2 and Figure 3 As shown, the primary precision separation mechanism 5 includes:

[0079] The cylindrical primary cleaning screen 51 is used to collect the sunflower seed raw material to be refined transported in the raw material collector 112 under the driving action of the material elevator 6, and to perform a first-stage impurity removal treatment on the sunflower seed raw material to be refined to obtain the first-grade sunflower seed raw material.

[0080] The top-level cylindrical primary cleaning screen effectively removes large impurities such as stones and paper from the sunflower seed raw material to be refined. The discharge port of the cylindrical primary cleaning screen is connected to the secondary refining mechanism, and the raw material is transported from the discharge port of the primary cleaning screen to the secondary refining mechanism by gravity.

[0081] Preferably, the outer diameter of the mesh of the cylindrical primary cleaning screen 51 is 14-24 mm, and / or the vibration frequency of the cylindrical primary cleaning screen 51 is 200-600 r / min.

[0082] By using the aforementioned sieve aperture outer diameter and vibration frequency, the cylindrical primary cleaning sieve can ensure optimal impurity removal from the sunflower seed raw materials to be refined.

[0083] Preferably, such as Figure 2 and Figure 3 As shown, the secondary precision separation mechanism 4 includes:

[0084] A second auger feeder 41, positioned horizontally, is connected to the outlet of the primary refining mechanism 5. It receives the primary sunflower seed raw material, evenly divides it into multiple first seed portions, and transports these first seed portions.

[0085] Multiple horizontally evenly arranged first vibrating screens 42 are connected to the discharge port of the second auger feeder 41, and are used to collect the multiple first seeds transported by the second auger feeder 41 one by one, and to remove impurities from the collected first seeds; the secondary sunflower seed raw material is obtained from all the first seeds after impurity removal.

[0086] The first-grade sunflower seed raw material, obtained after impurity removal by the primary separation mechanism, is processed by the first vibrating screen to effectively remove lighter impurities such as sunflower seed stalks, shells, and dust. Before passing through the first vibrating screen, the first-grade sunflower seed raw material, after impurity removal by the combined screen, is transported by its own gravity to the second auger distributor, which is set in a horizontal direction. This allows for the uniform distribution of the first-grade sunflower seed raw material, resulting in multiple first-grade seed materials. These materials are then collected and impurity removed one by one by the multiple first vibrating screens, which can better utilize the impurity removal effect of the first vibrating screen and avoid excessive material accumulation in the first vibrating screen, thus affecting its impurity removal effect.

[0087] Preferably, the outer diameter of the screen opening of each of the first vibrating screens 42 is 2.6 to 3.4 mm, and / or the vibration frequency of each of the first vibrating screens 42 is 400 to 800 r / min.

[0088] By combining the above-mentioned screen mesh outer diameter and vibration frequency with the first vibrating screen, it can be ensured that the combined screen and the first vibrating screen achieve the best impurity removal effect.

[0089] The number of first vibrating screens can be set and adjusted according to the actual situation. For example, in this embodiment, five first vibrating screens are set. One of the first vibrating screens is a combined screen with only one layer of screen. The other first vibrating screens are impurity removal screens with three layers of screens: upper, middle and lower. The outer diameter of the screen mesh of the three layers of screens can be the same or different. The first vibrating screen is a vibrating screen with an upper layer of Φ3.4mm, a middle layer of Φ3.1mm, and a lower layer of Φ2.8mm, and a vibration frequency of 800r / min. Here, Φ represents the outer diameter, which depends on the specific situation.

[0090] Preferably, such as Figure 2 and Figure 3 As shown, the three-stage precision separation mechanism 3 includes:

[0091] The third auger feeder 31, which is set horizontally, is connected to the discharge port of the secondary fine separation mechanism 4. It is used to receive the secondary sunflower seed raw material, divide the secondary sunflower seed raw material into multiple second seed materials, and transport the multiple second seed materials.

[0092] Multiple horizontally evenly arranged cleaning screens 32 are connected to the discharge port of the third auger feeder 31, used to collect the multiple second seed materials transported by the third auger feeder 31 one by one, and to remove impurities from the collected second seed materials; and

[0093] Multiple destoners 33, the same number as the cleaning screen 32, are arranged one-to-one at the discharge port of the cleaning screen 32 to collect the corresponding second seed material after impurity removal treatment, and to destone the corresponding second seed material after impurity removal treatment to obtain the corresponding third seed material; the third-grade sunflower seed raw material is obtained from all the third seed materials.

[0094] The secondary sunflower seed raw material obtained in the secondary refining mechanism falls into the third auger distributor at its outlet due to its own gravity, achieving uniform distribution of the secondary sunflower seed raw material. This facilitates the subsequent cleaning screen in the tertiary refining mechanism to remove impurities from the uniformly distributed second seed material with optimal impurity removal effect. The cleaning screen can remove smaller particle size impurities in the second seed material, such as small impurities smaller than 2mm. Then, through the destoner set one to one with each cleaning screen, smaller particle size impurities such as stones and nails in the second material after the impurity removal by the cleaning screen can be effectively removed, further improving the impurity removal effect and achieving the purpose of multi-stage refining.

[0095] Preferably, the vibration frequency of each cleaning screen 32 and the vibration frequency of each destoner 33 are both 800-1000 r / min, and / or the airflow velocity of each destoner 33 is 5-7 m / s.

[0096] By using the cleaning screen and destoner with the above parameters, we can ensure the best impurity removal effect while ensuring that the high-quality sunflower seeds are not damaged, thus guaranteeing a high whole kernel rate.

[0097] The number of cleaning screens and destoners can be set and adjusted according to the actual situation. For example, in this embodiment, both cleaning screens and destoners are set to 5.

[0098] Preferably, such as Figure 2 and Figure 3 As shown, the four-stage precision separation mechanism 2 includes:

[0099] A fourth auger feeder 21, arranged horizontally, is connected to the outlet of the three-stage refining mechanism 3. It receives the three-stage sunflower seed raw material, divides it into multiple fourth-stage seed materials, and transports these multiple fourth-stage seed materials.

[0100] Multiple horizontally evenly arranged second vibrating screens 22 are connected to the discharge port of the fourth auger distributor 21, and are used to collect the multiple fourth seeds transported by the fourth auger distributor 21 one by one, and to remove impurities from the collected fourth seeds to obtain the corresponding fifth seeds; the target sunflower seed raw material is obtained based on all the fifth seeds.

[0101] Similarly, the fourth auger feeder can be used to uniformly distribute the third-grade sunflower seed raw material obtained in the three-stage refining mechanism. The fourth seed material obtained after distribution falls into multiple second vibrating screens under its own gravity, further improving the impurity removal rate and the grading rate of multi-stage refining.

[0102] In this embodiment, the second vibrating screen is specifically a three-layer screen containing an upper layer, a middle layer, and a lower layer. The outer diameter of the screen mesh of the three layers can be the same or different. The outer diameter of the screen mesh of the three layers in the second vibrating screen can be the same as or different from that of the three layers in the first vibrating screen, depending on the specific situation.

[0103] Preferably, the outer diameter of the screen opening of each of the second vibrating screens 22 is 2 to 4 mm, and / or the vibration frequency of each of the second vibrating screens 33 is 800 to 1200 r / min.

[0104] Similarly, the second vibrating screen mentioned above ensures a high rate of impurity removal, grading, and whole kernel production.

[0105] The number of second vibrating screens can be set and adjusted according to actual conditions. For example, in this embodiment, the number of second vibrating screens is set to 8.

[0106] It should be noted that the second, third, and fourth auger feeders described in this embodiment have the same structure as the first auger feeder, and will not be described again here. The cylindrical primary cleaning screen, the first vibrating screen, the cleaning screen, the destoner, and the second vibrating screen all adopt existing conventional structures, and their specific structures will not be described again here.

[0107] Example 2

[0108] like Figure 5 As shown, a multi-stage sunflower seed refining method uses the multi-stage sunflower seed refining device described in Example 1 to perform multi-stage refining of sunflower seeds, including:

[0109] S1: Use the feeding unit 11 in the feeding and receiving mechanism 1 to feed the sunflower seed raw material to be refined;

[0110] S2: Using the material elevator 6, the sunflower seed raw material to be refined put into the feeding and receiving mechanism 1 is transported to the primary refining mechanism 5;

[0111] S3: Using the primary refining mechanism 5, the sunflower seed raw material to be refined is screened once to obtain primary sunflower seed raw material;

[0112] S4: Using the secondary separation mechanism 4, the primary sunflower seed raw material is collected, and the primary sunflower seed raw material is screened a second time to obtain secondary sunflower seed raw material;

[0113] S5: Using the three-stage fine separation mechanism 3, the secondary sunflower seed raw material is collected, and the secondary sunflower seed raw material is screened a second time to obtain the tertiary sunflower seed raw material;

[0114] S6: Using the four-stage fine separation mechanism 2, collect the three-stage sunflower seed raw materials and perform four screenings on the three-stage sunflower seed raw materials to obtain the target sunflower seed raw materials;

[0115] S7: Collect the target sunflower seed raw material using the receiving unit 12 in the feeding and receiving mechanism 1.

[0116] The multi-stage sunflower seed refining device described in this embodiment, through a multi-stage screening process involving primary, secondary, tertiary, and quaternary refining mechanisms, can precisely remove impurities from the sunflower seed raw material to be refined and achieve raw material separation, ensuring good integrity of the sunflower seed kernels. In other words, the multi-stage sunflower seed refining device method of this embodiment can achieve a high impurity removal rate, grading rate, and whole kernel rate for sunflower seeds. It boasts high impurity removal efficiency, fast separation speed, and precise grading size, and can process large quantities of sunflower seeds for refining. This meets the grading needs of enterprises, improves the utilization value of sunflower seeds and the production efficiency of enterprises, thereby increasing enterprise profits.

[0117] The sunflower seed multi-stage refining device described in this embodiment has the same structure as the sunflower seed multi-stage refining device in Embodiment 1. For details not covered in this embodiment, please refer to Embodiment 1 and... Figures 1 to 4 The specific details will not be repeated here.

[0118] To further illustrate the influence of different parameters on the refining effect, this embodiment uses the sunflower seed multi-stage refining device of Embodiment 1 to refine the sunflower seed raw material to be refined, and conducts 3 experiments and 5 comparative experiments.

[0119] Experiment 1

[0120] The sunflower seeds to be refined are manually fed into the bottom raw grain feeding port, and then transported by a material elevator to the top cylindrical primary cleaning screen with a screen size of Φ24mm (Φ represents the outer diameter) and a vibration frequency of 600r / min. This screen removes large impurities such as stones and paper. The cleaned raw material (i.e., the first-grade sunflower seed raw material) falls into the fourth layer for further impurity removal. It then passes through a second auger distributor and falls into five first-grade vibrating screens. One of these screens has a screen size of Φ3.4mm and a vibration frequency of 800r / min. The other four screens have different screen sizes. The first vibrating screen, with dimensions of Φ3.4mm for the upper layer, Φ3.1mm for the middle layer, and Φ2.8mm for the lower layer, and a vibration frequency of 800r / min, removes sunflower seed stalks, sunflower shells, dust, and other impurities. The raw material after impurity removal (i.e., secondary sunflower seed raw material) passes through the third layer's third auger feeder and a cleaning screen with a vibration frequency of 800r / min to remove small impurities smaller than Φ2.0mm. It then falls into a destoner with a vibration frequency of 800r / min and an airflow velocity of 7m / s to remove small stones, nails, and other impurities. After complete impurity removal, the raw material (i.e., grade 3 sunflower seed raw material) falls into the second layer for further fine separation. First, it passes through the fourth auger feeder, and then through the second vibrating screen with 8 mesh sizes (upper layer Φ3.8mm, middle layer Φ3.4mm, lower layer Φ3.0mm) and a vibration frequency of 1200r / min to classify the grade 3 sunflower seed raw material. The classified material (i.e., the target sunflower seed raw material) falls into the bottom layer and is transported to the corresponding silo by the first auger feeder.

[0121] Experiment 2

[0122] The sunflower seeds to be refined are manually fed into the bottom raw grain feeding port, and then transported by a material elevator to the top cylindrical primary cleaning screen with a screen size of Φ18mm and a vibration frequency of 400r / min to remove large impurities such as stones and paper. The cleaned raw material (i.e., first-grade sunflower seeds) falls into the fourth layer for further impurity removal. It then passes through a second auger distributor and falls into five first vibrating screens, one of which is a combination screen with a screen size of Φ3.3mm and a vibration frequency of 600r / min. The other four screens have a larger screen size. The first vibrating screen, with a Φ3.3mm layer, a Φ3.0mm middle layer, and a Φ2.7mm bottom layer and a vibration frequency of 600r / min, removes impurities such as sunflower seed stalks, shells, and dust. The purified raw material (i.e., secondary sunflower seed raw material) then passes through a third-layer auger distributor and a cleaning screen with a vibration frequency of 900r / min to remove small impurities smaller than Φ2.0mm. It then falls into a destoner with a vibration frequency of 900r / min and an airflow velocity of 6m / s to remove small stones, nails, and other impurities. The completely purified raw material (i.e., tertiary sunflower seed raw material) falls into the second layer for further fine separation. It first passes through a fourth auger distributor, then through a second vibrating screen with eight mesh sizes (Φ3.2mm for the upper layer, Φ2.8mm for the middle layer, and Φ2.4mm for the lower layer) and a vibration frequency of 1000r / min to classify the tertiary sunflower seed raw material. The classified material (i.e., the target sunflower seed raw material) falls to the bottom layer and is transported to the corresponding silo by the first auger distributor.

[0123] Experiment 3

[0124] The sunflower seeds to be refined are manually fed into the bottom raw grain feeding port, and then transported by a material elevator to the top cylindrical primary cleaning screen with a screen size of Φ14mm and a vibration frequency of 200r / min to remove large impurities such as stones and paper. The cleaned raw material (i.e., first-grade sunflower seeds) falls into the fourth layer for further impurity removal. It then passes through a second auger distributor and falls into five first-grade vibrating screens. One of these screens is a combination screen with a screen size of Φ3.2mm and a vibration frequency of 400r / min. The other four screens have the same screen size as the upper layer. A first vibrating screen with a diameter of 3.2mm, a middle layer of 2.9mm, and a bottom layer of 2.6mm, and a vibration frequency of 400r / min, removes sunflower seed stalks, shells, dust, and other impurities. The purified raw material (i.e., secondary sunflower seed raw material) then passes through a third-layer auger distributor and a cleaning screen with a vibration frequency of 1000r / min to remove small impurities smaller than 2.0mm. It then falls into a destoner with a vibration frequency of 1000r / min and an airflow velocity of 5m / s to remove small stones, nails, and other impurities. The completely purified raw material (i.e., tertiary sunflower seed raw material) falls into the second layer for further fine separation. It first passes through a fourth auger distributor, then through a second vibrating screen with eight mesh sizes (top layer 3.0mm, middle layer 2.6mm, bottom layer 2.2mm) and a vibration frequency of 800r / min to classify the tertiary sunflower seed raw material. The classified material (i.e., the target sunflower seed raw material) falls to the bottom layer and is transported to the corresponding silo by the first auger distributor.

[0125] Comparative Experiment 1

[0126] The sunflower seeds to be refined are manually fed into the bottom raw grain feeding port, and then transported by a material elevator to the top cylindrical primary cleaning screen with a 6mm mesh size and a vibration frequency of 60r / min to remove large impurities such as stones and paper. The cleaned raw material (i.e., first-grade sunflower seeds) falls into the fourth layer for further impurity removal. It then passes through a second auger distributor and falls into five first-grade vibrating screens. One of these screens is a combination screen with a 2.9mm mesh size and a vibration frequency of 100r / min, while the other four screens have the mesh size of the upper layer. A first vibrating screen with a diameter of 2.9mm, a middle layer of 2.6mm, and a bottom layer of 2.3mm, and a vibration frequency of 100r / min, removes sunflower seed stalks, shells, dust, and other impurities. The purified raw material (i.e., secondary sunflower seed raw material) then passes through a third-layer auger distributor and a cleaning screen with a vibration frequency of 500r / min to remove small impurities smaller than 2.0mm. It then falls into a destoner with a vibration frequency of 500r / min and an airflow velocity of 2m / s to remove small stones, nails, and other impurities. The completely purified raw material (i.e., tertiary sunflower seed raw material) falls into the second layer for further fine separation. It first passes through a fourth auger distributor, then through a second vibrating screen with eight mesh sizes (top layer 1.6mm, middle layer 1.4mm, bottom layer 1.2mm) and a vibration frequency of 500r / min to classify the tertiary sunflower seed raw material. The classified material (i.e., the target sunflower seed raw material) falls to the bottom layer and is transported to the corresponding silo by the first auger distributor.

[0127] Comparative Experiment 2

[0128] The sunflower seeds to be refined are manually fed into the bottom raw grain feeding port, and then transported by a material elevator to the top cylindrical primary cleaning screen with a screen size of Φ8mm and a vibration frequency of 100r / min to remove large impurities such as stones and paper. The cleaned raw material (i.e., first-grade sunflower seeds) falls into the fourth layer for further impurity removal. It then passes through a second auger distributor and falls into five first vibrating screens, one of which is a combination screen with a screen size of Φ3.0mm and a vibration frequency of 100r / min. The other four screens have a larger screen size. The first vibrating screen, with a Φ3.0mm layer, a Φ2.7mm middle layer, and a Φ2.4mm bottom layer and a vibration frequency of 200r / min, removes impurities such as sunflower seed stalks, shells, and dust. The purified raw material (i.e., secondary sunflower seed raw material) then passes through a third-layer auger distributor and a cleaning screen with a vibration frequency of 600r / min to remove small impurities smaller than Φ2.0mm. It then falls into a destoner with a vibration frequency of 600r / min and an airflow velocity of 3m / s to remove small stones, nails, and other impurities. The completely purified raw material (i.e., tertiary sunflower seed raw material) falls into the second layer for further fine separation. It first passes through a fourth auger distributor, then through a second vibrating screen with eight mesh sizes (Φ1.8mm for the upper layer, Φ1.6mm for the middle layer, and Φ1.4mm for the lower layer) and a vibration frequency of 600r / min to classify the tertiary sunflower seed raw material. The classified material (i.e., the target sunflower seed raw material) falls to the bottom layer and is transported to the corresponding silo by the first auger distributor.

[0129] Comparative Experiment 3

[0130] The sunflower seeds to be refined are manually fed into the bottom raw grain feeding port, and then transported by a material elevator to the top cylindrical primary cleaning screen with a 12mm mesh size and a vibration frequency of 150r / min to remove large impurities such as stones and paper. The cleaned raw material (i.e., first-grade sunflower seeds) falls into the fourth layer for further impurity removal, and then falls into five first vibrating screens through a second auger distributor. One of these screens has a 3.1mm mesh size and a vibration frequency of 300r / min, while the other four have smaller mesh sizes. The first vibrating screen, with a Φ3.1mm layer, a Φ2.8mm middle layer, and a Φ2.5mm bottom layer and a vibration frequency of 300r / min, removes impurities such as sunflower seed stalks, shells, and dust. The purified raw material (i.e., secondary sunflower seed raw material) then passes through a third-layer auger distributor and a cleaning screen with a vibration frequency of 700r / min to remove small impurities smaller than Φ2.0mm. It then falls into a destoner with a vibration frequency of 700r / min and an airflow velocity of 4m / s to remove small stones, nails, and other impurities. The completely purified raw material (i.e., tertiary sunflower seed raw material) falls into the second layer for further fine separation. It first passes through a fourth auger distributor, then through a second vibrating screen with eight mesh sizes (Φ2.0mm for the upper layer, Φ1.8mm for the middle layer, and Φ1.6mm for the lower layer) and a vibration frequency of 700r / min to classify the tertiary sunflower seed raw material. The classified material (i.e., the target sunflower seed raw material) falls to the bottom layer and is transported to the corresponding silo by the first auger distributor.

[0131] Comparative Experiment 4

[0132] The sunflower seeds to be refined are manually fed into the bottom raw grain feeding port, and then transported by a material elevator to the top cylindrical primary cleaning screen with a Φ26mm mesh size and a vibration frequency of 800r / min to remove large impurities such as stones and paper. The cleaned raw material (i.e., first-grade sunflower seeds) falls into the fourth layer for further impurity removal, and then falls into five first vibrating screens through a second auger distributor. One of these screens is a combination screen with a Φ3.5mm mesh size and a vibration frequency of 900r / min, while the other four screens have the mesh size of the upper layer. A first vibrating screen with a diameter of 3.5mm, a middle layer of 3.2mm, and a bottom layer of 2.9mm, and a vibration frequency of 900r / min, removes sunflower seed stalks, shells, dust, and other impurities. The purified raw material (i.e., secondary sunflower seed raw material) then passes through a third-layer auger distributor and a cleaning screen with a vibration frequency of 1100r / min to remove small impurities smaller than 2.0mm. It then falls into a destoner with a vibration frequency of 1100r / min and an airflow velocity of 8m / s to remove small stones, nails, and other impurities. The completely purified raw material (i.e., tertiary sunflower seed raw material) falls into the second layer for further fine separation. It first passes through a fourth auger distributor, then through a second vibrating screen with eight mesh sizes (top layer 4.8mm, middle layer 4.4mm, bottom layer 4.0mm) and a vibration frequency of 1300r / min to classify the tertiary sunflower seed raw material. The classified material (i.e., the target sunflower seed raw material) falls to the bottom layer and is transported to the corresponding silo by the first auger distributor.

[0133] Comparative Experiment 5

[0134] The sunflower seeds to be refined are manually fed into the bottom raw grain feeding port, and then transported by a material elevator to the top cylindrical primary cleaning screen with a 30mm mesh size and a vibration frequency of 1000r / min to remove large impurities such as stones and paper. The cleaned raw material (i.e., first-grade sunflower seeds) falls into the fourth layer for further impurity removal, and then passes through a second auger distributor before falling into five first vibrating screens. One of these screens has a 3.6mm mesh size and a vibration frequency of 1000r / min, while the other four have smaller mesh sizes. The first vibrating screen, with a Φ3.6mm layer, a Φ3.3mm middle layer, and a Φ3.0mm bottom layer and a vibration frequency of 1000r / min, removes sunflower seed stalks, sunflower shells, dust, and other impurities. The raw material after impurity removal (i.e., secondary sunflower seed raw material) passes through the third auger feeder in the third layer and a cleaning screen with a vibration frequency of 1200r / min to remove small impurities smaller than Φ2.0mm. Then, it falls into a destoner with a vibration frequency of 1200r / min and an airflow speed of 9m / s to remove small stones, nails, and other impurities. After complete impurity removal, the raw material (i.e., grade 3 sunflower seed raw material) falls into the second layer for further fine separation. First, it passes through the fourth auger feeder, and then through the second vibrating screen with 8 mesh sizes (Φ5.0mm for the upper layer, Φ4.6mm for the middle layer, and Φ4.2mm for the lower layer) and a vibration frequency of 1400r / min to classify the grade 3 sunflower seed raw material. The classified material (i.e., the target sunflower seed raw material) falls into the bottom layer and is transported to the corresponding silo by the first auger feeder.

[0135] The comparison of parameters between the above experiments and the comparative experiments, as well as the results of the removal rate, grading rate and whole kernel rate of the obtained sunflower seed raw materials, are shown in Table 1.

[0136] Table 1 compares the parameters of the experimental and comparative experiments in this embodiment, as well as the results of the impurity removal rate, grading rate, and whole kernel rate.

[0137]

[0138]

[0139] As shown in Table 1, the method provided in this embodiment can ensure an impurity removal rate of over 99%, and a separation rate and whole kernel rate of over 97% when removing and separating sunflower seeds. The method demonstrates excellent impurity removal and separation effects and is suitable for multi-stage grading of large-volume sunflower seeds, with a processing capacity of up to 30 t / h. Combined with experimental and comparative experiments, it can be found that the size of the sieve mesh in different devices affects the impurity removal and grading effects of the sunflower seed raw materials; while the intensity of the vibration frequency and the amount of impurities affect the integrity of the sunflower seed raw materials.

[0140] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A multi-stage sunflower seed refining device, characterized in that, include: Material hoist (6) and feeding and receiving mechanism (1), fourth-level refining mechanism (2), third-level refining mechanism (3), second-level refining mechanism (4) and first-level refining mechanism (5) arranged from bottom to top; The feeding and receiving mechanism (1) includes a feeding unit (11) and a receiving unit (12). The feeding unit (11) is used to feed the sunflower seed raw materials to be refined; The material elevator (6) is used to transport the sunflower seed raw material to be refined from the feeding and receiving mechanism (1) to the primary refining mechanism (5); The primary refining mechanism (5) is used to perform a first screening of the sunflower seed raw material to be refined transported by the material elevator (6) to obtain primary sunflower seed raw material; The secondary refining mechanism (4) is connected to the discharge port of the primary refining mechanism (5); the secondary refining mechanism (4) includes: a second auger distributor (41) arranged horizontally, connected to the discharge port of the primary refining mechanism (5); a plurality of first vibrating screens (42) evenly arranged horizontally, connected to the discharge port of the second auger distributor (41), used to collect the plurality of first seeds transported by the second auger distributor (41) one by one, and to remove impurities from the corresponding collected first seeds; secondary sunflower seed raw material is obtained from all the first seeds after impurity removal. The third-stage refining mechanism (3) is connected to the discharge port of the second-stage refining mechanism (4); the third-stage refining mechanism (3) includes: a third auger feeder (31) arranged horizontally, connected to the discharge port of the second-stage refining mechanism (4), used to receive the second-stage sunflower seed raw material, divide the second-stage sunflower seed raw material into multiple second seed materials, and transport the multiple second seed materials; multiple cleaning screens (32) evenly arranged horizontally, connected to the discharge port of the third auger feeder (31), used to collect the multiple second seed materials transported by the third auger feeder (31) one by one, and perform impurity removal treatment on the corresponding collected second seed materials; multiple destoners (33) with the same number as the cleaning screens (32), one by one set at the discharge port of the cleaning screens (32); The fourth-stage refining mechanism (2) is connected to the discharge port of the third-stage refining mechanism (3); The receiving unit (12) is connected to the discharge port of the four-stage refining mechanism (2) and is used to collect the target sunflower seed raw materials.

2. The sunflower seed multi-stage refining device according to claim 1, characterized in that, The feeding unit (11) includes: The raw material feeding port (111) is used to feed the sunflower seed raw material to be refined; The raw material collector (112) is used to collect the sunflower seed raw material to be refined from the raw material feeding port (111) and move to the feeding port of the first-stage refining mechanism (5) under the driving action of the material elevator (6), and put the collected sunflower seed raw material to be refined into the first-stage refining mechanism (5). The receiving unit (12) includes: A first auger feeder (121) positioned horizontally is connected to the outlet of the fourth-stage fine separation mechanism (2) for receiving the target sunflower seed raw material, uniformly dividing the target sunflower seed raw material into multiple target seeds, and transporting the multiple target seeds; and Multiple horizontally evenly distributed silos (122) are connected to the discharge port of the first screw conveyor (121) and are used to collect the multiple target seeds transported by the first screw conveyor (121) one by one.

3. The sunflower seed multi-stage refining device according to claim 2, characterized in that, The primary analytical mechanism (5) includes: The cylindrical primary cleaning screen (51) is used to collect the sunflower seed raw material to be refined transported in the raw material collector (112) under the driving action of the material elevator (6), and to perform a first-stage impurity removal treatment on the sunflower seed raw material to be refined to obtain the first-stage sunflower seed raw material. The outer diameter of the mesh of the cylindrical primary cleaning screen (51) is 14~24mm, and / or the vibration frequency of the cylindrical primary cleaning screen (51) is 200~600r / min.

4. The sunflower seed multi-stage refining device according to claim 1, characterized in that, The outer diameter of the screen opening of each of the first vibrating screens (42) is 2.6~3.4 mm, and / or the vibration frequency of each of the first vibrating screens (42) is 400~800 r / min.

5. The sunflower seed multi-stage refining device according to claim 1, characterized in that, The vibration frequency of each of the cleaning screens (32) and the vibration frequency of each of the destoners (33) are 800~1000 r / min, and / or the airflow velocity of each of the destoners (33) is 5~7 m / s.

6. The sunflower seed multi-stage refining device according to claim 1, characterized in that, The four-level analytical mechanism (2) includes: A fourth auger feeder (21) positioned horizontally is connected to the outlet of the third-stage refining mechanism (3) for receiving third-stage sunflower seed raw materials, dividing the third-stage sunflower seed raw materials into multiple fourth-stage seed materials, and transporting the multiple fourth-stage seed materials; and Multiple horizontally evenly arranged second vibrating screens (22) are connected to the discharge port of the fourth auger distributor (21) to collect the multiple fourth seeds transported by the fourth auger distributor (21) one by one, and to remove impurities from the collected fourth seeds to obtain the corresponding fifth seeds; the target sunflower seed raw material is obtained based on all the fifth seeds.

7. The sunflower seed multi-stage refining device according to claim 6, characterized in that, The outer diameter of the screen opening of each of the second vibrating screens (22) is 2~4mm, and / or the vibration frequency of each of the second vibrating screens (22) is 800~1200r / min.

8. A method for multi-stage fractionation of sunflower seeds, characterized in that, Multi-stage sunflower seed refining using the sunflower seed multi-stage refining device as described in any one of claims 1 to 7, comprising: Using the feeding unit (11) in the feeding and receiving mechanism (1), sunflower seed raw materials to be refined are fed; Using the material elevator (6), the sunflower seed raw material to be refined put into the feeding and receiving mechanism (1) is transported to the primary refining mechanism (5); Using the primary refining mechanism (5), the sunflower seed raw material to be refined is screened once to obtain primary sunflower seed raw material; Using a secondary separation mechanism (4), the primary sunflower seed raw materials are collected, and the primary sunflower seed raw materials are screened a second time to obtain secondary sunflower seed raw materials; Using a three-stage grading mechanism (3), the secondary sunflower seed raw materials are collected, and the secondary sunflower seed raw materials are screened a second time to obtain the tertiary sunflower seed raw materials; Using a four-stage fine separation mechanism (2), the three-stage sunflower seed raw materials are collected, and the three-stage sunflower seed raw materials are screened four times to obtain the target sunflower seed raw materials; The target sunflower seed raw material is collected using the receiving unit (12) in the feeding and receiving mechanism (1).

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