A rice cleaning device, cleaning method and automatic sterile rice production line

Abstract

The present invention discloses a rice cleaning device, a cleaning method and an automatic sterile rice production line, which includes a cleaning cylinder. The cleaning cylinder includes a separable outer cylinder body and an inner cylinder body. A stirring and cleaning mechanism for cleaning rice is arranged inside the inner cylinder body. The stirring and cleaning mechanism includes a power assembly and a stirring member connected to the driving end of the power assembly. A cleaning roller is arranged at the center of the stirring member, and a spiral cleaning flow channel is formed between the cleaning roller and the wall surface of the stirring member. Before the rice enters the cleaning cylinder for stirring and cleaning, it is pre-cleaned in the cleaning flow channel. The rice cleaning device of the present invention, when applied in an automatic sterile rice production line, can ensure the cleaning effect of the rice, greatly reduce or eliminate the residual particulate impurities in the rice, and thus can ensure the quality of the rice produced by the production line.

Description

Technical Field

[0001] The present invention relates to the technical field of rice production equipment, and particularly relates to a rice cleaning device, a cleaning method and an automatic sterile rice production line. Background Art

[0002] Sterile rice, namely sterile instant rice, refers to a high-quality fast food rice produced on an industrial scale. After the rice is sterilized in a high-temperature and high-pressure environment, it is directly sealed into a packaging container containing clean nitrogen in a sterile and dust-free environment, so that it can be stored for a long time and can be eaten directly or after simple heating.

[0003] Its production has the characteristics of intensification, standardization and industrialization. Many production processes of sterile rice have been disclosed in the prior art. Before the rice is steamed, it is necessary to perform treatment processes such as cleaning and soaking on the rice. At present, for the cleaning of rice, it mainly relies on directly disturbing by a stirring shaft and rinsing the rice with water flow. However, in this way, the cleaning uniformity is not good, and a good cleaning effect cannot be achieved, resulting in impurities and the like easily existing in the cleaned rice, affecting the taste and quality of the finally produced rice. Summary of the Invention

[0004] Technical Objectives: Aiming at the deficiencies in the rice cleaning of the existing rice production line, the present invention discloses a rice cleaning device, a cleaning method and an automatic sterile rice production line.

[0005] Technical Solutions: To achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] A rice cleaning device includes a cleaning cylinder, the cleaning cylinder includes a separable outer cylinder and an inner cylinder, and a stirring and cleaning mechanism for cleaning rice is arranged in the inner cylinder. The stirring and cleaning mechanism includes a power component and a stirring member connected to the driving end of the power component. A cleaning roller is arranged at the center of the stirring member, and a spiral cleaning channel is formed between the cleaning roller and the wall surface of the stirring member. The rice is pre-cleaned in the cleaning channel before entering the cleaning cylinder for stirring and cleaning.

[0007] Preferably, the stirring member of the present invention includes a feeding part located at the upper part and a guiding part located at the lower part for cooperating with the cleaning roller to form a cleaning channel. The feeding part adopts a flared opening structure to form a feeding area for the rice and cleaning water to enter. A spiral feeding groove is opened on the inner wall of the guiding part. When the stirring member rotates relative to the cleaning roller, the rice enters the spiral feeding groove from the feeding part, and is conveyed downward along with the stirring member until it is separated from the guiding part of the stirring member and falls into the cleaning cylinder.

[0008] Preferably, fins for disturbing the flow are provided on the outer wall of the diversion part of the stirring member of the present invention. Along the axial direction of the diversion part, the fins are divided into several segments, and adjacent two segments of fins are respectively inclined in different circumferential directions of the diversion part.

[0009] Preferably, the stirring and cleaning mechanism of the present invention is movably arranged above the inner cylinder body as a whole through a lifting frame, and a cleaning mechanism for separating floating substances in the cleaning water is arranged on the inner cylinder body.

[0010] Preferably, the cleaning mechanism of the present invention includes a drainage groove arranged at the upper wall position of the inner cylinder body, and an angle adjustment assembly arranged at the bottom of the inner cylinder body for tilting the inner cylinder body towards the side where the drainage groove is located.

[0011] Preferably, the cleaning cylinder of the present invention is connected with a screening mechanism for pre-sorting particles in rice. The screening mechanism includes an inclined screening plate and a vibration assembly arranged below the screening plate, and the vibration assembly assists the movement of rice on the screening plate.

[0012] Preferably, a plurality of screening grooves are arranged longitudinally on the screening plate of the present invention, and screening baffles are arranged in a direction perpendicular to the screening grooves. The screening baffles are arranged in a staggered manner along the direction of the screening grooves. The lower screening baffles are located in the end regions of the upper screening baffles. A secondary screening structure is formed by the screening baffles to separate the flowing rice and particulate impurities on the screening plate; the screening baffles adopt an inclined structure with the middle higher than both ends.

[0013] The present invention also discloses a rice cleaning method. Using the above-mentioned rice cleaning device, the rice after screening treatment enters the cleaning channel formed between the stirring member and the cleaning roller. The power assembly drives the stirring member to rotate, driving the rice to move downward. During the rotation of the stirring member, cleaning water is synchronously injected into the stirring member. In the cleaning channel, the rice is pre-cleaned by using the cleaning roller; as the stirring member rotates, the pre-cleaned rice falls into the inner cylinder body from the lower end of the diversion member;

[0014] After all the rice to be cleaned has fallen into the inner cylinder body, the stirring member is used for stirring, the rice is rinsed with water flow, and the cleaning water is updated according to the set number of cleaning times, and finally the cleaning of the rice is completed.

[0015] Preferably, when the stirring member is used for stirring in the present invention, the power assembly drives the stirring member to rotate, and the fins on the stirring member disturb the water flow. The fins with different inclination directions have different abilities to disturb the water flow when rotating with the stirring member, so that the water flow forms a flowing layer in the inner cylinder body, strengthening the rinsing of the rice.

[0016] The present invention discloses an automatic production line for sterile rice, which includes a rice bin, a rice washing device, a soaking and filling device, a rice cooking device, and a rice packaging device arranged in sequence. The above-mentioned rice washing device is a rice cleaning device that washes the rice conveyed from the rice bin and then sends it into the soaking and filling device for soaking and then filling it into the rice cooking device for rice production.

[0017] Advantages: The rice cleaning device, cleaning method, and automatic production line for sterile rice disclosed by the present invention have the following advantages:

[0018] 1. Before stirring and cleaning the rice, the present invention first performs pre-cleaning through the cleaning channel between the stirring member and the cleaning roller, controls the cleaning rate by using the cleaning channel, and at the same time improves the cleaning effect by using friction, which helps to separate the rice from the surface impurities or dirt and improves the cleaning quality.

[0019] 2. The stirring member of the present invention uses a feed part with a horn-shaped structure at the upper part, which is convenient for conveying the rice and cleaning water, and can play the role of pre-storing the conveyed rice to avoid the situation that some rice enters the inner cylinder directly without pre-cleaning due to the mismatch between the conveying rate and the cleaning rate.

[0020] 3. The outer wall of the diversion part of the stirring member of the present invention is provided with fins, and adjacent fins are inclined in different circumferential directions. When the stirring member rotates to disturb the cleaning water, due to the different flow disturbance effects of the fins, flow stratification will occur between adjacent fins, so as to enhance the flushing impact between the water flow of the cleaning water and the rice, improve the cleaning uniformity, and ensure the cleaning effect.

[0021] 4. The present invention is provided with a cleaning mechanism on the inner cylinder body, which can remove some floating objects while stirring and cleaning, thus ensuring the cleaning quality, simplifying the cleaning steps, and improving the cleaning efficiency.

[0022] 5. Before the rice enters the cleaning cylinder, the present invention first screens and removes the residual particulate impurities in the rice through a screening mechanism, uses the screening plate for conveying and guiding while screening, and guides and disperses the flowing direction of the rice on the screening plate through a screening baffle arranged perpendicular to the screening groove, so as to avoid some rice not being screened and impurities entering the flushing cylinder; at the same time, the screening baffle can extend the flowing path of the rice on the screening plate, thus extending the screening time and ensuring the screening effect. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0024] Figure 1 It is the overall structure diagram of the cleaning cylinder of the present invention;

[0025] Figure 2 This is the structural diagram of the stirring and cleaning mechanism of the present invention;

[0026] Figure 3 This is the sectional view of the present invention along the axis direction of the cleaning roller;

[0027] Figure 4 This is the structural diagram of the screening plate surface of the present invention;

[0028] Figure 5 This is the sectional view of the screening baffle of the present invention;

[0029] Among them, 1 - cleaning cylinder, 2 - outer cylinder, 3 - inner cylinder, 4 - power assembly, 5 - stirring member, 6 - cleaning roller, 7 - feeding part, 8 - guiding part, 9 - fin, 10 - lifting frame, 11 - drainage groove, 12 - angle adjusting assembly, 13 - screening plate, 14 - screening groove, 15 - screening baffle, 16 - cleaning flow channel, 17 - motor, 18 - connecting plate, 19 - connecting rod. Detailed implementation manners

[0030] Now, reference will be made in detail to the embodiments of the present disclosure, one or more examples of which are set forth below. Each embodiment and example is provided by way of explanation of the devices, components, and materials of the present disclosure, rather than by way of limitation. On the contrary, the following description provides a convenient illustration for implementing the exemplary embodiments of the present disclosure. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made within the teachings of the present disclosure without departing from the scope or spirit of the present disclosure.

[0031] As Figures 1 - 5 shown, the present invention discloses a rice cleaning device, including a cleaning cylinder 1, the cleaning cylinder 1 includes a separable outer cylinder 2 and an inner cylinder 3. A stirring and cleaning mechanism for cleaning rice is arranged inside the inner cylinder 3. The outer cylinder 2 is arranged on the outside to support the inner cylinder and receive and discharge the cleaning water at the same time; the stirring and cleaning mechanism includes a power assembly 4 and a stirring member 5 connected to the driving end of the power assembly 4. A cleaning roller 6 is arranged at the center of the stirring member 5. A spiral cleaning flow channel 16 is formed between the wall surface of the cleaning roller 6 and the stirring member 5. Before the rice enters the cleaning cylinder 1 for stirring and cleaning, it is pre-cleaned in the cleaning flow channel 16.

[0032] In the present invention, the inner cylinder 3 and the outer cylinder 2 are arranged in a separable form, and drainage pipes are provided for both. After the rice cleaning is completed, the inner cylinder 3 can be directly taken out, which is convenient for the transportation of rice. Correspondingly, the stirring and cleaning mechanism needs to be able to move in position so as not to affect the operation of the inner cylinder 3. For this purpose, the stirring and cleaning mechanism of the present invention is integrally movably arranged above the inner cylinder 3 through a lifting frame 10, and a manipulator or other means that can drive the lifting frame 10 to move in space can be used for position adjustment.

[0033] As Figure 2 and Figure 3 shown, in a specific embodiment, the stirring member 5 of the present invention includes a feed portion 7 located at the upper part and a guiding portion 8 located at the lower part for cooperating with the cleaning roller 6 to form a cleaning flow channel. The feed portion 7 adopts a flared opening structure to form a feed area for rice and cleaning water to enter. A spiral feed groove is formed on the inner wall of the guiding portion 8. When the stirring member 5 rotates relative to the cleaning roller 6, rice enters the spiral feed groove from the feed portion 7, and is conveyed downward with the stirring member until it disengages from the guiding portion 8 of the stirring member 5 and falls into the cleaning cylinder. Through the pre-cleaning structure formed by the stirring member 5 of the present invention, no additional equipment space needs to be occupied, and it can be directly completed inside the cleaning cylinder, which is beneficial to simplifying equipment installation and reducing the occupied space of the equipment and the corresponding rice production line. At the same time, the flared structure of the feed portion 7 can buffer and temporarily store the conveyed rice, and gradually enable the rice to move smoothly by gravity according to the feeding rate of the spiral feed groove.

[0034] When the feed portion 7 is arranged in a flared opening structure, the corresponding power assembly is driven by a motor 17. A connecting disk 18 is arranged at the driving end of the motor 17, and is connected to the feed portion 7 through a connecting rod 19 on the connecting disk 18 to realize the rotational drive of the stirring member 5, so as to avoid interference between the power assembly and the cleaning roller 6. The cleaning roller 6 can be installed and fixed in a bearing cooperation manner with the connecting disk 18.

[0035] For the stirring member 5 to stir and clean the cleaning water and rice in the inner cylinder, it can be directly realized by arranging a stirring shaft on the outer side of the stirring member 5. Considering that only arranging the stirring shaft is likely to cause uneven stirring, affecting the final cleaning effect, therefore, fins 9 for disturbing the flow are arranged on the outer wall of the guiding portion 8 of the stirring member 5 of the present invention. Along the axis direction of the guiding portion 8, the fins 9 are divided into several sections, and adjacent two sections of fins are inclined in different circumferential directions of the guiding portion 8, as Figure 2 shown. Because the inclination directions of the fins are inconsistent, when the stirring member 5 is driven by the power assembly, the different inclination directions result in different acting forces on the water flow in the corresponding areas, so that even at the same rotation speed, a flow velocity difference will be formed at the junction, thereby enhancing the cleaning impact effect between the water flow and the rice and improving the cleaning efficiency.

[0036] In addition, the stirring and cleaning mechanism of the present invention is provided with a cleaning mechanism on the inner cylinder 3 for separating floating substances in the cleaning water. The residual floating impurities in the rice are removed through the cleaning mechanism. To improve efficiency, the cleaning mechanism of the present invention is designed to be cleaned synchronously during the stirring and cleaning process. The cleaning mechanism includes a drainage groove 11 provided at the upper cylindrical wall position of the inner cylinder, and an angle adjustment assembly 12 provided at the bottom of the inner cylinder 3 for tilting the inner cylinder 3 towards the side where the drainage groove is located. The angle adjustment assembly 12 adopts a device that can be adjusted in height and is provided at the bottom of the inner cylinder 3, such as a cylinder, an electric cylinder, etc. By adjusting the height differently, the inner cylinder 3 can be tilted at a certain angle, so that the cleaning water above can carry the floating substances and drain out from the drainage groove 11 and enter the outer cylinder 2; the cleaning is completed synchronously while stirring, saving the cleaning time and improving the efficiency; to improve the stability of the position of the inner cylinder 3 during the tilting process, a slot can be provided at the bottom of the inner cylinder 3 to cooperate with the driving end of the angle adjustment assembly to avoid detachment. After the cleaning is completed, the cleaning water inside the inner cylinder 3 enters the outer cylinder 2 through the drain pipe provided at the bottom and is collected by the outer cylinder 2 for unified discharge.

[0037] As Figure 4 and Figure 5 shown, the cleaning cylinder 1 of the present invention is also connected with a screening mechanism for pre-sorting the particulate matters in the rice. The screening mechanism includes an inclined screening plate 13 and a vibration assembly provided below the screening plate 13, which can be directly realized by using a vibrator to assist the movement of the rice on the screening plate 13; a plurality of screening grooves 14 are arranged longitudinally on the screening plate 13, and screening baffles 15 are arranged in a direction perpendicular to the screening grooves 14. The cross-section of the screening baffle is an arc structure similar to a U shape. The screening baffles 15 are arranged in a staggered manner along the direction of the screening grooves 14. The lower screening baffle is located in the end area of the upper screening baffle. The rice and particulate impurities flowing on the screening plate 13 are separated by the secondary screening structure formed by the screening baffles 15. Screening holes can be opened on the plate surface of the screening baffles 15 along the moving direction of the rice to extend the overall screening path and continue to screen the particulate matters while guiding the movement; As Figure 5 shown, to facilitate the movement of the rice during the screening process, the screening baffle 15 of the present invention adopts an inclined structure with the middle higher than both ends. For the screening baffle 15 at the edge position of the screening plate 13, it can also be designed to be inclined towards the inner side of the plate to prevent accumulation due to poor flow at the edge. Through the screening mechanism, the residual impurities contained in the rice can be further removed, and the screening effect can be improved under the condition of occupying limited equipment space.

[0038] The present invention also discloses a method for cleaning rice. Using the above-mentioned rice cleaning device, the rice after screening enters the cleaning channel formed between the stirring member and the cleaning roller. The power assembly drives the stirring member to rotate, driving the rice to move downward. During the rotation of the stirring member, cleaning water is synchronously injected into the stirring member. In the cleaning channel, the cleaning roller is used for pre-cleaning the rice; as the stirring member rotates, the pre-cleaned rice falls from the lower end of the guiding member into the inner cylinder body;

[0039] After all the rice to be cleaned has completely fallen into the inner cylinder body, the stirring member is used for stirring. When using the stirring member for stirring, the power assembly drives the stirring member to rotate. The fins on the stirring member disturb the water flow. The fins with different inclination directions have different abilities to disturb the water flow when rotating with the stirring member, causing the water flow to form a flowing stratification in the inner cylinder body, strengthening the flushing of the rice, using the water flow to flush the rice, and replacing the cleaning water according to the set number of cleaning times. The rice water generated by cleaning is discharged from the drain pipes of the inner cylinder body and the outer cylinder body. Among them, a filter screen is provided at the drain outlet of the inner cylinder body to prevent the rice from flowing out from the corresponding drain pipe during the intermediate water change during cleaning, and finally the cleaning of the rice is completed.

[0040] The present invention discloses an automatic sterile rice production line, including a rice bin, a rice washing device, an immersion filling device, a rice cooking device, and a rice packaging device arranged in sequence. The rice washing device uses the above-mentioned rice cleaning device to clean the rice conveyed from the rice bin and then sends it into the immersion filling device for soaking and filling, and then into the rice cooking device for rice production. When transferring the rice, it can be directly transferred by moving the inner cylinder body as a whole to reduce the transfer difficulty. For example, a manipulator or other existing transfer methods can be used to directly clamp and carry the inner cylinder body.

[0041] The rice cleaning device of the present invention, when applied in an automatic sterile rice production line, can ensure the cleaning effect of the rice, greatly reduce or eliminate the residual particulate impurities in the rice, thereby ensuring the rice production quality of the production line. At the same time, the cleaning device of the present invention can also be applied to the cleaning use scenarios of other crops of the same category according to the use requirements, which is also within the protection scope of this application.

Claims

1. A rice cleaning device, characterized in that: The invention comprises a cleaning cylinder (1), wherein the cleaning cylinder (1) comprises a detachable outer cylinder (2) and an inner cylinder (3), wherein a stirring and cleaning mechanism for cleaning rice is arranged in the inner cylinder (3), wherein the stirring and cleaning mechanism comprises a power assembly (4) and a stirring member (5) connected to a driving end of the power assembly (4), wherein a cleaning roller (6) is arranged at the center of the stirring member (5), and a spiral cleaning flow channel (16) is formed between the cleaning roller (6) and the wall surface of the stirring member (5), and the rice is pre-cleaned in the cleaning flow channel (16) before entering the cleaning cylinder (1) for stirring and cleaning; The stirring member (5) comprises a feeding portion (7) located at the top and a guide portion (8) located at the bottom for cooperating with the cleaning roller (6) to form a cleaning flow channel. The feeding portion (7) adopts a trumpet-shaped opening structure to form a feeding area for rice and cleaning water to enter. The inner wall of the guide portion (8) is provided with a spiral feeding groove. When the stirring member (5) rotates relative to the cleaning roller (6), the rice enters the spiral feeding groove from the feeding portion (7) and is transported as the stirring member moves downward until it is separated from the guide portion (8) of the stirring member (5) and falls into the cleaning cylinder. The outer wall of the flow guide portion (8) of the stirring element (5) is provided with fins (9) for disturbing the flow, and along the axial direction of the flow guide portion (8), the fins (9) are divided into a plurality of sections, and two adjacent sections of fins are respectively inclined to different circumferential directions of the flow guide portion (8); The cleaning cylinder (1) is connected to a screening mechanism for pre-sorting particles in the rice, the screening mechanism comprising a screening plate (13) arranged obliquely and a vibration component arranged below the screening plate (13), the vibration component assisting the movement of the rice on the screening plate (13); A plurality of screening slots (14) are arranged in the longitudinal direction of the screening plate (13), and screening baffles (15) are arranged in a direction perpendicular to the screening slots (14); the screening baffles (15) are arranged in a staggered manner along the direction of the screening slots (14); the lower screening baffles are located at the end region of the upper screening baffles; the screening baffles (15) form a secondary screening structure to separate rice and particulate impurities flowing on the screening plate (13); and the screening baffles (15) are of an inclined structure with the middle portion being higher than the two ends.

2. A rice cleaning device according to claim 1, characterized in that: The stirring and cleaning mechanism is movably arranged above the inner cylinder (3) via a lifting frame (10), and a cleaning mechanism for separating floating objects in the cleaning water is arranged on the inner cylinder (3).

3. A rice cleaning device according to claim 2, characterized in that: The cleaning mechanism comprises a drainage groove (11) arranged on the upper wall of the inner cylinder, and an angle adjustment component (12) arranged on the bottom of the inner cylinder (3) for tilting the inner cylinder (3) towards the side where the drainage groove is located.

4. A rice cleaning method, using the rice cleaning device according to any one of claims 1 to 3, characterized in that: The rice after screening enters the cleaning flow channel formed between the stirring element and the cleaning roller. The power assembly drives the stirring element to rotate, driving the rice to move downward. During the rotation of the stirring element, cleaning water is simultaneously injected into the stirring element. In the cleaning flow channel, the cleaning roller is used to pre-clean the rice. As the stirring element rotates, the pre-cleaned rice falls from the lower end of the guide element into the inner cylinder. After the rice to be washed completely falls into the inner cylinder, the stirring element is used to stir it, the water flow is used to rinse the rice, and the washing water is updated according to the set washing times, and finally the rice is washed.

5. A rice cleaning method according to claim 4, characterized in that, When the stirring element is used for stirring, the stirring element is driven to rotate by the power assembly, and the fins on the stirring element disturb the water flow. The fins with different inclination directions have different disturbance abilities on the water flow when the stirring element rotates, so that the water flow forms flow stratification in the inner cylinder, thereby enhancing the washing of the rice.

6. An automatic sterile rice production line, characterized in that: The invention comprises a rice bin, a rice washing device, a soaking and filling device, a rice cooking device and a rice packaging device which are arranged in sequence. The rice washing device uses the rice cleaning device described in any one of claims 1 to 3 to clean the rice transported from the rice bin, and then sends the rice into the soaking and filling device for soaking, and then fills the rice into the rice cooking device for rice making.

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