Conveying device for rice processing

Abstract

The present application relates to rice conveying technical field, disclose a kind of conveying device for rice processing, comprising: conveying support, rice grain conveying dust collection mechanism is arranged on it;Rice grain conveying dust collection mechanism includes: dust collection outer tube, inner wall is sequentially divided into front section dust collection area, middle section dust collection area, rear section dust collection area along the axial direction;Conveying inner tube, coaxially arranged in dust collection outer tube, 1-2cm annular dust collection space is formed between them;Conveying inner tube cross section is composed of two parts - lower half is non-mesh solid structure, upper half is dust passing net cover, and it is provided with diamond mesh with diameter 0.5-1.2mm and aperture smaller than the minimum particle size of rice grain;Three groups of independent suction components, and dust collection end is respectively connected to front, middle and rear section dust collection area;The present application is divided into front, middle and rear three sections by dust collection area, and independently controlled, and suction force gradient decreases from feed end to discharge end, and perfectly matches the objective law that "dust content gradually reduces" in the conveying process of rice grain.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rice conveying, more particularly, it relates to a conveying device for rice processing. BACKGROUND

[0002] In the rice processing, from the husking of paddy to the packaging of finished rice, it needs to go through multiple conveying links. In these conveying links, a large amount of dust will be generated due to the friction and collision between the rice grains and the impurities such as bran and broken rice attached to the surface of the rice grains.

[0003] The conventional dust collection method often uses a single suction force, which is difficult to adapt to the situation that the dust concentration is different in different areas during the conveying process. In the area with high dust concentration, the suction force may be insufficient, resulting in incomplete dust removal. Therefore, we propose a conveying device for rice processing. SUMMARY

[0004] The present application provides a conveying device for rice processing, which solves the technical problem that the dust collection method in the related art often uses a single suction force, which is difficult to adapt to the situation that the dust concentration is different in different areas during the conveying process. In the area with high dust concentration, the suction force may be insufficient, resulting in incomplete dust removal.

[0005] The present application provides a conveying device for rice processing, which includes: a conveying support, on which a rice grain conveying and dust collection mechanism is arranged;

[0006] The rice grain conveying and dust collection mechanism includes:

[0007] A dust collection outer pipe, the inner wall of which is sequentially divided into a front dust collection section, a middle dust collection section and a rear dust collection section along the axial direction; a material conveying inner pipe, which is coaxially arranged in the dust collection outer pipe, and a ring-shaped dust collection space of 1-2 cm is formed between the two;

[0008] The cross section of the material conveying inner pipe is composed of two parts: the lower half is a solid structure without mesh holes, and the upper half is a dust passing net cover, on which rhombic mesh holes with a diameter of 0.5-1.2 mm are arranged, and the hole diameter is smaller than the minimum particle diameter of the rice grains;

[0009] Three groups of independent suction force assemblies, the dust collection ends of which are connected to the front, middle and rear dust collection sections, respectively;

[0010] A blowing and spraying assembly, the jetting ends of which are distributed along the axial direction of the lower wall of the material conveying inner pipe;

[0011] Sensors are arranged corresponding to each dust collection section to monitor the negative pressure value in real time;

[0012] When the negative pressure value of any section exceeds the preset threshold value, the corresponding suction force assembly is triggered to perform pulse dust collection adjustment, and the blowing and spraying assembly is linked to increase the jetting amount, forming a "blowing-suction" cooperative dust removal mechanism;

[0013] The intelligent control system receives sensor data through the Internet of Things module, dynamically adjusts the suction force parameters of the three-section suction assembly and the air blowing frequency of the blowing assembly, and realizes real-time control of the dust concentration in the conveying process and automatic early warning of the blocking state.

[0014] Further, a conveying propeller is arranged to rotate in the inner conveying pipe, and the discharge end of the conveying propeller is connected to the driving motor assembly to drive the rice conveying.

[0015] Further, the feeding end of the dust suction outer pipe is provided with a feeding hopper, the discharge port of the feeding hopper penetrates through the dust suction outer pipe and is connected to the feeding end of the inner conveying pipe, the end of the dust suction outer pipe away from the feeding hopper is provided with a discharge cylinder, and the discharge cylinder penetrates through the bottom of the dust suction outer pipe and is connected to the discharge end of the inner conveying pipe.

[0016] Further, the suction assembly includes three centrifugal dust suction machines, the dust suction ends of the three centrifugal dust suction machines are connected to the front, middle and rear suction areas through the dust suction main pipe, respectively, the dust discharge ends are provided with dust suction bags, the three centrifugal dust suction machines are fixed to the conveying support through the transverse fixing plate, and the suction force decreases from the feeding end to the discharge end.

[0017] Further, the blowing assembly includes a gas supply pump, the gas discharge end of the gas supply pump extends to the annular dust suction space through a vertical blowing pipe and is wired along the lower wall of the inner conveying pipe, and the vertical blowing pipe is provided with a plurality of air jet heads arranged in an array and blowing into the inner conveying pipe.

[0018] Further, a plurality of partition seats are arranged on the dust passing net cover, and the dust suction space is divided into three independent areas corresponding to the front, middle and rear sections.

[0019] Further, the dust passing net cover and the lower half of the inner conveying pipe are flexibly connected through a split film, the outer walls of the two are provided with elastic sheets, the elastic sheets of the same section are connected through a connecting plate, a vibrator is arranged on the connecting plate, and the vibrator is controlled according to the negative pressure data of the sensor to drive the dust passing net cover to shake to remove the blocked dust.

[0020] Further, a plurality of outer protective covers are arranged on the outer wall of the dust suction outer pipe, the vibrator is located in the outer protective cover and does not contact the inner wall of the outer protective cover, and a vibration space is provided.

[0021] The beneficial effects of the present application are as follows:

[0022] By dividing the dust suction area into three sections of front, middle and rear and independently controlling the three sections, and by decreasing the suction force from the feeding end to the discharge end, the present application perfectly matches the objective law that the dust content gradually decreases during the conveying process of rice, avoids the disadvantages of traditional single-point dust suction, such as insufficient suction force in the front section and excessive suction force in the rear section, significantly improves the dust removal efficiency, and avoids unnecessary energy waste.

[0023] The linkage of the bottom blowing assembly and the top suction assembly, when detecting abnormal negative pressure in a certain section, not only enhances the suction force, but also synchronously enhances the blowing below the region. This "blowing up" from the lower part of the rice layer and "sucking away" from the upper part of the coordinated mode can effectively break the attachment and accumulation of dust at the mesh, and significantly reduce the mesh blockage problem caused by relying on negative pressure suction alone. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the overall structure schematic diagram of the present application;

[0025] Figure 2 is the dust suction outer tube structure schematic diagram of the present application;

[0026] Figure 3 is the dust suction outer tube structure schematic diagram of the present application; Figure 2 is the dust suction outer tube structure schematic diagram of the present application;

[0027] Figure 4 is the dust suction outer tube structure schematic diagram of the present application;

[0028] Figure 5 is the dust suction outer tube structure schematic diagram of the present application;

[0029] Figure 6 is the dust suction outer tube structure schematic diagram of the present application;

[0030] Figure 7 is the dust suction outer tube structure schematic diagram of the present application; Figure 6 is the dust suction outer tube structure schematic diagram of the present application;

[0031] In the figure: 11, conveying support; 12, centrifugal dust suction machine; 13, driving motor assembly; 14, feeding hopper; 15, discharging cylinder; 16, transverse plate; 17, dust suction bag; 2, rice conveying and dust suction mechanism; 21, dust suction outer tube; 22, dust suction main tube; 23, conveying inner tube; 24, outer protective cover; 25, vertical blowing pipe; 26, air supply pump; 27, conveying propeller; 28, dust passing cover; 29, separation seat; 31, connecting plate; 32, vibrator; 33, sensor; 34, elastic sheet; 35, divided rubber sheet. DETAILED DESCRIPTION

[0032] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is merely meant to provide a better understanding of the subject matter described herein and can be changed in function and arrangement without departing from the scope of the present description. Various processes or components can be omitted, substituted, or added according to desired implementations. Additionally, features described with respect to some examples can be combined in other examples.

[0033] As Figures 1-7As shown, a rice conveying device for rice processing, comprising: a conveying support 11, on which a rice conveying and dust collection mechanism 2 is arranged;

[0034] The rice conveying and dust collection mechanism 2 comprises:

[0035] A dust collection outer pipe 21, the inner wall of which is sequentially divided into a front section dust collection area, a middle section dust collection area and a rear section dust collection area in the axial direction; and a material conveying inner pipe 23 coaxially arranged in the dust collection outer pipe 21, forming an annular dust collection space of 1-2 cm between the two.

[0036] The cross section of the material conveying inner pipe 23 is composed of two parts, the lower half is a solid structure without mesh, and the upper half is a dust passing mesh cover 28, on which rhombic mesh holes with a diameter of 0.5-1.2 mm are arranged, and the hole diameter is smaller than the minimum particle diameter of the rice.

[0037] Three groups of independent suction assemblies, the dust collection ends of which are connected to the front, middle and rear section dust collection areas respectively.

[0038] A blowing and spraying assembly, the jetting ends of which are distributed in the axial direction along the lower wall of the material conveying inner pipe 23.

[0039] Each section dust collection area is provided with a sensor 33 for real-time monitoring of the negative pressure value.

[0040] When the negative pressure value of any section exceeds the preset threshold value, the corresponding suction assembly is triggered to perform pulse dust collection adjustment, and the blowing and spraying assembly is linked to increase the jetting amount, forming a "blowing-suction" cooperative dust removal mechanism.

[0041] The intelligent control system receives the sensor 33 data through the Internet of Things module, dynamically adjusts the suction force parameters of the three section suction assemblies and the jetting frequency of the blowing and spraying assembly, and realizes real-time control of the dust concentration and automatic early warning of the blockage state during the conveying process.

[0042] A conveying propeller 27 is rotatably arranged in the material conveying inner pipe 23, and the discharge end of the conveying propeller 27 is connected to the driving motor assembly 13 to drive the conveying of the rice.

[0043] The feeding end of the dust collection outer pipe 21 is provided with a feeding hopper 14, the discharge port of the feeding hopper 14 penetrates through the dust collection outer pipe 21 and is connected to the feeding end of the material conveying inner pipe 23, one end of the dust collection outer pipe 21 away from the feeding hopper 14 is provided with a discharge cylinder 15, and the discharge cylinder 15 penetrates through the bottom of the dust collection outer pipe 21 and is connected to the discharge end of the material conveying inner pipe 23.

[0044] The suction assembly comprises three centrifugal dust collection machines 12, the dust collection ends of which are connected to the front, middle and rear section dust collection areas through the dust collection main pipe 22, the dust discharge ends are provided with dust collection bags 17, the three centrifugal dust collection machines 12 are fixed to the conveying support 11 through the transversely arranged plate 16, and the suction force decreases from the feeding end to the discharge end.

[0045] The blowing and spraying assembly includes a gas supply pump 26, the outlet of which extends through a vertical spraying pipe 25 to the annular dust collection space and along the lower wall of the inner conveying pipe 23, and the vertical spraying pipe 25 is provided with a plurality of spraying heads arranged in an array to spray into the inner conveying pipe 23.

[0046] The dust removal net cover 28 is provided with a plurality of partition seats 29 to divide the dust collection space into three independent areas corresponding to the front, middle and rear sections.

[0047] The dust removal net cover 28 is flexibly connected with the lower half of the inner conveying pipe 23 through a split film 35, and the outer walls of the two are provided with elastic sheets 34, the elastic sheets 34 in the same section are connected through a connecting plate 31, the connecting plate 31 is provided with a vibrator 32, and the vibrator 32 is controlled according to the negative pressure data of a sensor 33 to drive the dust removal net cover 28 to shake to remove the blocked dust.

[0048] The outer wall of the outer dust collection pipe 21 is provided with a plurality of outer protective covers 24, and the vibrator 32 is located in the outer protective covers 24 and does not contact the inner walls of the outer protective covers 24 to provide a vibration space.

[0049] Rice grain conveying and basic air flow field establishment:

[0050] The rice grains enter the inner conveying pipe 23 from the feeding hopper 14. After starting, the driving motor assembly 13 drives the conveying propeller 27 to rotate to stably convey the rice grains to the discharging cylinder 15. At the same time, the system is initialized:

[0051] The blowing and spraying assembly: the gas supply pump 26 is started, and the airflow passes through the vertical spraying pipe 25 and the spraying heads thereon to be sprayed upward from the lower wall of the inner conveying pipe 23 at a specific angle and pressure. The airflow has two main effects: one is to generate a certain "air cushion" effect on the rice grains to reduce the friction and damage of the rice grains with the pipe wall; and the other is to lift the dust mixed in the rice grains and lifted due to the conveying upward to make the dust more easily close to the dust removal net cover 28 above.

[0052] The suction assembly: the three centrifugal dust collectors 12 start to work according to the preset parameters (usually set as the front section with the strongest suction, the middle section with the second strongest suction, and the rear section with the weakest suction, for example, the front section-2500Pa, the middle section-2000Pa, and the rear section-1500Pa) to form a stable negative pressure field in the annular dust collection space between the outer dust collection pipe 21 and the inner conveying pipe 23.

[0053] Segmented dynamic dust collection and "blowing-suction" cooperation: the dust attached to the inside and surface of the rice grains, mainly bran powder and broken grains, is separated and lifted under the stirring of the screw and the blowing of the bottom airflow. Due to the diamond-shaped mesh of the dust removal net cover 28 (the aperture is 0.5-1.2mm, which is much smaller than the minimum particle size of the rice grains, for example, the minimum particle size of typical japonica rice is about 3mm), the rice grains are blocked in the inner conveying pipe 23, and the dust with a particle size smaller than the mesh is sucked into the mesh under the action of the negative pressure in the dust collection space.

[0054] Real-time monitoring: Sensors 33 installed in the front, middle, and rear sections of the dust collection space continuously monitor the negative pressure values P1, P2, and P3 in these areas.

[0055] Intelligent feedback and adjustment: The intelligent control system receives these pressure data through the Internet of Things module. The system presets a normal negative pressure threshold range for each section (for example, the threshold range for the front section is -2300 Pa to -2700 Pa). When the rice contains a high amount of impurities or the dust concentration suddenly increases, a large amount of dust is sucked in, causing the mesh passability to temporarily decrease, resulting in an increase in the actual negative pressure absolute value of the section, P1 from -2500 Pa to -2900 Pa.

[0056] Triggering conditions: Once the negative pressure value monitored by any sensor 33 exceeds the preset upper threshold, i.e., the absolute value of the negative pressure is too large, the system determines that the section has a high dust load or is initially clogged.

[0057] Execution actions:

[0058] Pulsed dust collection: The intelligent control system immediately sends instructions to the corresponding centrifugal dust collector 12, causing it to increase power in a short period of time (e.g., 0.5-2 seconds) to perform strong pulsed dust collection (e.g., the suction force is instantly increased to -3500 Pa) to quickly suck up accumulated dust.

[0059] Linkage enhanced blowing: At the same time, the system controls the air supply pump 26 to increase the frequency and / or pressure of the air jet head on the vertical jet pipe 25 below the corresponding area, forming a stronger upward air flow. This "blowing-suction coordination" mechanism can more effectively "blow up" and immediately "suck away" the dust clogged in the mesh or attached to the bottom of the rice, greatly improving the instantaneous unblocking and dust removal efficiency.

[0060] Hierarchical processing: This design of independent response by area realizes "hierarchical and segmented processing" of dust. The rice with the most impurities receives the strongest suction force (e.g., an average of -2500 Pa) and more frequent blowing-suction coordination in the front section where most of the dust is removed; the pre-processed rice receives decreasing intensity (e.g., an average of -2000 Pa and -1500 Pa) in the middle and rear sections for fine dust removal, avoiding energy waste and excessive disturbance to the rice.

[0061] Active anti-clogging and cleaning mechanism: To prevent dust (especially slightly wet fine chaff) from adhering and accumulating on the mesh of the dust screen cover 28, causing persistent clogging, an active anti-clogging system is set up.

[0062] Vibration cleaning: When a certain section of sensor 33 detects that the negative pressure is abnormal and lasts more than a higher level threshold (or recovers slowly after pulse processing), the intelligent control system will start the vibrator 32 of this section. The vibrator 32 transmits high-frequency low-amplitude vibration to the dust screen cover 28 through the connecting plate 31 and the elastic sheet 34. Since the dust screen cover 28 is flexibly connected to the lower half through the dividing rubber sheet 35, it can effectively produce shaking and physically shake off the particles blocking the mesh. The vibration frequency can be adjusted according to the severity of the blockage, for example, intermittent vibration (such as 5 seconds of vibration every 10 minutes, amplitude 0.5 mm) for mild blockage, and continuous vibration (such as amplitude 1 mm) for severe blockage.

[0063] Safety protection: The vibrator 32 is placed in the outer protective cover 24, which not only provides the space required for vibration, but also avoids interference with external structures, ensuring the safety and stability of operation.

[0064] Intelligent management and early warning: The entire working process is coordinated by the intelligent control system. The system not only processes real-time data and dynamically adjusts the suction force and jet parameters, but also learns the best dust removal parameter combination for different types of rice through historical data. Through the Internet of Things module, the operator can remotely monitor the negative pressure, equipment status, energy consumption and other information of each section. Based on the negative pressure trend or the frequency of starting the vibrator 32, the system can predict the decline in filter cleanliness or equipment abnormalities in advance, send a blockage warning or maintenance prompt to the terminal, and change passive maintenance to active maintenance.

[0065] High dust removal efficiency and energy saving, precise operation: By dividing the dust removal area into three sections, front, middle and back, and independently controlling them, and the suction force gradually decreasing from the feed end to the discharge end, this design perfectly matches the objective law that the dust content gradually decreases during the conveying process. In the front end, high suction force is used to handle high-concentration dust, and in the back end, weak suction force is used for fine polishing, avoiding the drawbacks of traditional single-point dust removal, such as insufficient suction force in the front section and excessive suction force in the back section.

[0066] Unique "blow-suction coordination" mechanism to effectively prevent mesh blockage: The bottom blow assembly is linked with the top suction assembly. When detecting abnormal negative pressure in a certain section, the system not only increases the suction force, but also simultaneously increases the air blowing below that area. This coordinated mode of "blowing up from the bottom of the rice layer" and "sucking away from the top" can effectively break the adhesion and accumulation of dust in the mesh, significantly reducing the problem of mesh blockage caused by relying solely on negative pressure suction. Especially for lighter bran powder, the coordinated dust removal effect is more significant.

[0067] The embodiments of the present application are described above, but the present application is not limited to the specific embodiments described above, which are only illustrative and not limiting. Those skilled in the art can make many forms under the inspiration of the present embodiments, which are all within the protection of the present embodiments.

Claims

1. A conveying device for rice processing, characterized in that, The utility model relates to a rice conveying and dust collecting mechanism, comprising: a conveying support (11) on which a rice conveying and dust collecting mechanism (2) is arranged; the rice conveying and dust collecting mechanism (2) comprises: a dust collecting outer pipe (21) with an inner wall divided into a front section dust collecting area, a middle section dust collecting area and a rear section dust collecting area in sequence along an axial direction; and a material conveying inner pipe (23) coaxially arranged in the dust collecting outer pipe (21), forming a 1-2cm annular dust collecting space between the two; the cross section of the material conveying inner pipe (23) is composed of two parts, the lower half is a solid structure without mesh, and the upper half is a dust passing net cover (28) with rhombic mesh holes with a diameter of 0.5-1.2mm and a hole diameter smaller than the minimum diameter of the rice; three groups of independent suction components, the dust collecting ends of which are connected to the front section dust collecting area, the middle section dust collecting area and the rear section dust collecting area respectively; a blowing and spraying component, the jetting end of which is distributed along the lower wall of the material conveying inner pipe (23) in an axial direction; sensors (33) are arranged in each section of the dust collecting area to monitor the negative pressure value in real time; when the negative pressure value of any section exceeds a preset threshold value, the corresponding suction component is triggered to perform pulse dust collecting adjustment, and the blowing and spraying component is linked to increase the jetting amount, forming a blowing-suction collaborative dust removing mechanism; an intelligent control system receives the sensor (33) data through an internet of things module, dynamically adjusts the suction force parameters of the three section suction components and the jetting frequency of the blowing and spraying component, and realizes real-time control of the dust concentration and automatic early warning of the blocking state during the conveying process.

2. The conveying device for rice processing according to claim 1, characterized by a conveying propeller (27) is rotatably arranged in the material conveying inner pipe (23), and the discharging end of the conveying propeller (27) is connected to a driving motor assembly (13) to drive the rice conveying.

3. The conveying device for rice processing according to claim 1, characterized in that, a feeding hopper (14) is arranged at the feeding end of the dust collecting outer pipe (21), the discharging port of the feeding hopper (14) penetrates through the dust collecting outer pipe (21) and is connected to the feeding end of the material conveying inner pipe (23), one end of the dust collecting outer pipe (21) away from the feeding hopper (14) is provided with a discharging cylinder (15), and the discharging cylinder (15) penetrates through the bottom of the dust collecting outer pipe (21) and is connected to the discharging end of the material conveying inner pipe (23).

4. The conveying device for rice processing according to claim 1, characterized in that, the suction component comprises three centrifugal dust collectors (12), the dust collecting ends of which are connected to the front section dust collecting area, the middle section dust collecting area and the rear section dust collecting area through a dust collecting main pipe (22), the dust discharging ends are provided with dust collecting bags (17), the three centrifugal dust collectors (12) are fixed to the conveying support (11) through a transverse fixing plate (16), and the suction force decreases from the feeding end to the discharging end.

5. The conveying device for rice processing according to claim 4, wherein the blowing and spraying component comprises a gas supply pump (26), the gas discharging end of which extends to the annular dust collecting space through a vertical jetting pipe (25) and is wired along the lower wall of the material conveying inner pipe (23), and the vertical jetting pipe (25) is provided with jetting heads arranged in an array on the surface thereof to jet into the material conveying inner pipe (23).

6. The conveying device for rice processing according to claim 1, wherein a plurality of partition seats (29) are arranged on the dust passing net cover (28), dividing the dust collecting space into three independent areas corresponding to the front section, the middle section and the rear section.

7. The conveying device for rice processing according to claim 6, wherein the dust passing net cover (28) and the lower half of the material conveying inner pipe (23) are flexibly connected through a split film (35), the outer walls of the two are provided with elastic sheets (34), the elastic sheets (34) of the same section are connected through a connecting plate (31), a vibrator (32) is arranged on the connecting plate (31), and the vibrator (32) is controlled according to the negative pressure data of the sensor (33) to drive the dust passing net cover (28) to shake to remove the blocked dust.

8. The conveying device for rice processing according to claim 7, wherein The dust-sucking outer tube (21) is provided with a plurality of outer protective covers (24), the vibrator (32) is located in the vibration space without contacting the inner wall of the outer protective cover (24).

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