A stepped rice filtering device

Abstract

The application discloses a stepped rice filtering device. The device comprises a shell, at least two layers of filtering screens arranged in steps, a unblocking mechanism and a flow guide plate. Each layer of filtering screen is in the shape of a sector and is arranged obliquely, the unblocking mechanism comprises a power motor installed below the center of the sector and a sweeping rod close to the upper surface of the filtering screen; the length of the sweeping rod is equal to the radius of the sector, one end of the sweeping rod is fixed to the output shaft of the motor, and the motor drives the sweeping rod to swing to remove the rice blocking the screen holes. The sweeping rod adopts a roller structure: the main shaft is stepped near the motor end, a rotatable rolling sleeve is sleeved on the outer periphery of the main shaft, and a limiting end cover is arranged at the free end. A flow guide plate is arranged above each layer of motor to cover the joint area of the rolling sleeve and the main shaft, so that impurities are prevented from entering. The filtering device of the application avoids rice accumulation and blockage by the stepped layout combined with the sector-shaped oblique filtering screen, and improves the filtering efficiency; the roller-type sweeping rod rolls to clear blockage in swinging, thereby reducing the risk of rice sticking.

Description

Technical Field

[0001] This application relates to the field of rice processing equipment technology, and more specifically, to a stepped rice filtration device. Background Technology

[0002] In the rice processing industry, rice filtration is a crucial step, directly impacting rice quality and subsequent processing. Traditional rice filtration devices typically employ a planar filter structure. In this structure, rice tends to accumulate on the filter surface during filtration, causing blockages and significantly reducing filtration efficiency. Furthermore, planar filters struggle to effectively separate impurities of different particle sizes, allowing finer impurities to remain mixed into the rice, affecting its purity.

[0003] Furthermore, existing filtration devices are typically installed inside a housing, making cleaning and maintenance quite difficult. Due to limitations in their structural design, filter components are not easily disassembled and installed, increasing the difficulty and time cost of cleaning. These problems are becoming increasingly prominent in large-scale rice processing production, severely hindering the efficient development of the rice processing industry. Therefore, a new type of rice filtration device is urgently needed to solve these problems. Utility Model Content

[0004] This application provides a stepped rice filtering device, including a filter screen, a declogging mechanism, and a guide plate. The filter screen is installed inside a housing, arranged in a stepped pattern with at least two layers. Each layer of the filter screen has a fan-shaped filtering area, and the surface of the filter screen is inclined relative to the horizontal plane. The declogging mechanism includes a motor and a sweeping rod. The motor is installed below the center of the fan-shaped filtering area, and its output shaft passes through the filter screen. The sweeping rod is positioned close to the upper surface of the filtering area, its length equal to the radius of the fan-shaped filtering area, and one end is fixed to the output shaft of the motor. The motor drives the sweeping rod to swing, thus removing rice clogging the mesh. The sweeping rod is a roller structure, including a main shaft, a rolling sleeve, and an end cap. The end of the main shaft near the motor is stepped, and the rolling sleeve is fitted onto the outer circumference of the main shaft via a rotating structure. The end cap is located at the free end of the main shaft to restrict the rolling sleeve from sliding out. A guide plate is provided above each layer of the motor, covering the connection area between the rolling sleeve and the stepped main shaft.

[0005] In some embodiments, the fan-shaped filtering area has a semi-circular structure.

[0006] In some embodiments, the side baffle of the filter screen is provided with guide posts, and the housing has horizontally extending strip holes at the corresponding positions, and the guide posts can reciprocate along the strip holes.

[0007] In some embodiments, the housing has a feed hopper at the top and a discharge hopper at the bottom.

[0008] In some embodiments, the outer end face of the rolling sleeve is provided with a recessed groove; the end cap is a circular cap with a diameter larger than that of the main shaft, and the end cap is embedded in the groove and fixed to the free end of the main shaft by threads.

[0009] In some embodiments, an arc-shaped guide plate is provided at the end of each filter area to collect the filtered rice to the center of the filter screen and guide it to the center of the next filter area.

[0010] In some embodiments, the curvature of the guide plate matches the curvature of the edge of the fan-shaped filtering area.

[0011] In some embodiments, the end speed of the sweeper is 0.3 to 0.5 m / s.

[0012] In some embodiments, the filter screen is tilted at an angle of 15 to 25 degrees.

[0013] This rice filtration device utilizes a multi-layered, stepped, inclined fan-shaped filter screen to effectively disperse materials, improve filtration efficiency, and achieve graded filtration of impurities. A motor-driven roller-type sweeping bar oscillates closely against the filter screen, continuously cleaning clogged rice and significantly reducing clogging. The rolling contact design of the roller sleeve reduces the risk of broken rice, while the guide plate prevents materials from entering the mechanism's connection points. The overall structure balances high-efficiency filtration, anti-clogging and unblocking, and ease of maintenance, improving rice purity and production efficiency.

[0014] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0016] Figure 1 This is a partial half-sectional schematic diagram of the overall structure of the embodiment of this application;

[0017] Figure 2 This is a top view of the filter screen according to the embodiment of this application;

[0018] Figure 3 This is a half-sectional schematic diagram of the sweeping bar according to the embodiment of this application.

[0019] Explanation of main component symbols: Rice filtration device (100), filter screen (10), housing (11), strip hole (111), reciprocating motor (112), feed hopper (113), collection hopper (114), filtration area (12), baffle (13), guide column (131), guide plate (14), unclogging mechanism (20), power motor (21), sweeping rod (22), main shaft (23), rolling sleeve (24), groove (241), end cover (25), guide plate (30). Detailed Implementation

[0020] The embodiments of this application will be further described below with reference to the accompanying drawings. The same or similar reference numerals in the drawings denote the same or similar elements or elements having the same or similar functions throughout.

[0021] Furthermore, the embodiments of this application described below in conjunction with the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting this application.

[0022] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] Please see Figure 1 , Figure 2 and Figure 3This application provides a stepped rice filtering device (100), which includes a filter screen (10), a declogging mechanism (20), and a guide plate (30). The filter screen (10) is installed inside the housing (11). The filter screen (10) is arranged in a stepped manner and has at least two layers. Each layer of filter screen (10) has a fan-shaped filtering area (12). The plate surface of the filter screen (10) is inclined relative to the horizontal plane. The declogging mechanism (20) includes a power motor (21) and a sweeping rod (22). The power motor (21) is installed below the center of the fan-shaped filtering area (12), and the output shaft of the power motor (21) passes through the filter screen (10). The sweeping rod (22) is set close to the upper surface of the filtering area (12). The length of the sweeping rod (22) is equal to the radius of the fan-shaped filtering area (12), and one end is fixed to the output shaft of the power motor (21). The drive motor rotates and drives the sweeping rod to swing, so as to sweep away the rice that is blocked in the mesh. The sweeping bar (22) is a roller structure, including a main shaft (23), a rolling sleeve (24), and an end cap (25). The end of the main shaft (23) near the power motor (21) is stepped, and the rolling sleeve (24) is fitted onto the outer circumference of the main shaft (23) through a rotating structure. The end cap (25) is located at the free end of the main shaft (23) to restrict the rolling sleeve (24) from sliding out. A guide plate (30) is provided above each power motor (21) to cover the connection area between the rolling sleeve (24) and the step of the main shaft (23).

[0024] The rice filtration device (100) of this application effectively disperses materials, improves filtration efficiency, and achieves graded filtration of impurities through a multi-layer fan-shaped filter screen (10) arranged in a stepped and inclined manner. A roller-type sweeping bar (22) driven by a power motor (21) swings in a fan shape close to the filter screen (10) to continuously clean the rice clogging the holes, significantly reducing clogging. The rolling contact design of the rolling sleeve (24) reduces the risk of broken rice, while the guide plate (30) prevents materials from entering the mechanism connection. The overall structure takes into account efficient filtration, anti-clogging and unblocking, and convenient maintenance, improving the purity of rice and production efficiency.

[0025] Please see Figure 1 and Figure 2The filter screen (10) is installed inside the housing (11). The filter screen (10) is made of hard stainless steel and is not easily deformed. Specifically, the surface of the filter screen (10) is inclined relative to the horizontal plane to facilitate the filtration and discharge of rice. The side baffle (13) of the filter screen (10) is provided with a guide post (131) on the outside. The housing (11) has a strip hole (111) extending in the horizontal direction. The guide post (131) can reciprocate along the strip hole (111). The filter screen (10) can achieve its reciprocating motion directly or indirectly, for example, by direct connection and drive by a reciprocating motor (112) or a stepper motor, or by a drive device driving the filter screen (10) through a reciprocating mechanism. A feed hopper (113) is provided above the housing (11), and a collection hopper (114) is provided below the housing (11).

[0026] The filter screens (10) are arranged in a stepped pattern and have at least two steps. In the preferred embodiment of this application, there are two steps. In other embodiments, three, four or more steps may be provided as needed. Each filter screen (10) has a fan-shaped filtration area (12). In the preferred embodiment, the filtration area (12) is semi-circular. Further, in a preferred example, the mesh size of each filter screen (10) is different, and the mesh size increases from high to low to filter rice with different pore sizes. Similarly, a collection hopper or guide plate (not shown) is provided under each filter screen (10) to receive the filtered rice.

[0027] Please continue reading. Figure 1 and Figure 2 The unclogging mechanism (20) is used to unclogging the semi-circular filter area (12). Specifically, the unclogging mechanism (20) includes a power motor (21) and a sweeping rod (22). The power motor (21) is installed below the center of the filter area (12), and its output shaft passes above the filter screen (10). The sweeping rod (22) is located above the filter area (12) and close to its upper surface. The length of the sweeping rod (22) is the same as the radius of the filter area (12), and one end of the sweeping rod (22) is fixed to the output shaft. The rotation of the power motor (21) drives the sweeping rod (22) to swing, thereby removing the clogged rice.

[0028] The unclogging mechanism (20) is used to unclogging the semi-circular filter area (12). Specifically, the unclogging mechanism (20) includes a power motor (21) and a sweeping rod (22). The power motor (21) is installed below the center of the filter area (12), and its output shaft passes above the filter screen (10). The power motor (21) is a low-speed torque motor. The sweeping rod (22) is located above the filter area (12) and closely fits its upper surface. The length of the sweeping rod (22) is equal to the radius of the filter area (12), and one end of the sweeping rod (22) is fixed to the output shaft. When the power motor (21) rotates, it will drive the sweeping rod (22) to swing, thereby clearing the clogged rice. The filter screen (10) has an inclination angle of 15° to 25°, allowing the rice to slide down naturally under gravity. The sweeping rod (22) only needs to overcome the adhesion force of the mesh, further reducing the power requirement.

[0029] Please combine Figure 3 The sweeping bar (22) can be plate-shaped or column-shaped. In the preferred embodiment of this application, the sweeping bar (22) is designed as a roller to prevent the rice from being broken. Specifically, the sweeping bar (22) includes a main shaft (23), a rolling sleeve (24), and an end cap (25). The end of the main shaft (23) near the power motor (21) is set in a stepped shape. The rolling sleeve (24) is sleeved on the outer periphery of the main shaft (23) by means of bearings or bushings that facilitate rotation. The outer end face of the rolling sleeve (24) is recessed inward to form a groove (241) for accommodating the end cap (25). The end cap (25) is circular, and its diameter is larger than that of the main shaft (23). The end cap (25) is fixed to the free end of the main shaft (23) by a threaded connection. The linear velocity of the end of the sweeping bar (22) (outer edge of the rolling sleeve (24)) is controlled at 0.3 to 0.5 m / s to prevent the rice from being thrown out.

[0030] The sweeping bar (22) can be in the form of a plate or a column. In the preferred embodiment of this application, in order to effectively prevent the rice from being pinched or damaged in the mesh, the sweeping bar (22) adopts a roller design. This design not only reduces friction but also ensures the integrity of the rice during processing.

[0031] Specifically, the sweeping bar (22) includes a main shaft (23), a rolling sleeve (24), and an end cap (25). The main shaft (23) is stepped at the end closest to the power motor (21). The rolling sleeve (24) is tightly fitted around the outer circumference of the main shaft (23) via a rotatable connection such as a bearing or bushing, allowing the rolling sleeve (24) to rotate freely on the main shaft (23), thereby reducing direct pressure on the rice. The outer end face of the rolling sleeve (24) is also recessed inward, forming a groove (241) for accommodating the end cap (25). The end cap (25) is circular in shape, with a diameter larger than that of the main shaft (23), ensuring that the end cap (25) completely covers and secures the end of the rolling sleeve (24). The end cap (25) is securely fixed to the free end of the main shaft (23) by means of threaded connection. The hidden design of the end cap (25) can reduce the impact of rice dust and further optimize the quality and effect of rice processing.

[0032] Further, please refer to Figure 1 and Figure 2 Considering that rice dust may be generated during actual use, in order to effectively prevent these fine rice dust particles from entering the main shaft (23) and causing wear or affecting the normal operation of the equipment, a guide plate (30) is provided in each filter area (12). The guide plate (30) is installed above the power motor (21), and its coverage area can completely cover the connection area between the rolling sleeve (24) and the main shaft (23) step (including the reciprocating motion area), thereby playing a good blocking and guiding role, ensuring that rice dust will not easily invade the key parts of the main shaft (23), and providing a reliable guarantee for the stable operation of the equipment.

[0033] Furthermore, each filter screen (10) has a matching arc-shaped guide plate (14) at the end of the filter area (12). The guide plate (14) is used to collect rice in the filter area (12) and to collect rice at the relatively central position of the filter screen (10), so that the rice can flow to the center of the next filter area (12). The sweeping bar (22) of the next layer can spread the rice mesh to both sides by swinging, thereby enhancing the filtration effect.

[0034] Please see Figure 2Furthermore, each filter screen (10) has a matching arc-shaped guide plate (14) at the end of its filtration area (12). The guide plate (14) is used to effectively gather the filtered rice to the center of the filter screen (10). This design ensures that the rice can flow smoothly to the center of the next filtration area (12), thus ensuring the continuity and efficiency of the entire filtration process. When the sweeping bar (22) of the next layer is working, it gradually diffuses the rice gathered in the center to both sides of the filter screen (10) by swinging. This diffusion not only helps to distribute the rice evenly, but also significantly enhances the filtration effect, so that each grain of rice can be screened more thoroughly and meticulously, thereby improving the overall filtration quality and efficiency.

[0035] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one feature. In the description of this application, "multiple" means at least two, such as two or three, unless otherwise explicitly specified.

[0037] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A stepped rice filtration device, characterized in that, include The filter screen (10) is installed inside the housing (11). The filter screen (10) is arranged in a stepped manner and has at least two layers. Each layer of filter screen (10) is provided with a fan-shaped filter area (12). The plate surface of the filter screen (10) is inclined relative to the horizontal plane. The unblocking mechanism (20) includes a power motor (21) and a sweeping rod (22); the power motor (21) is installed below the center of the fan-shaped filter area (12), and the output shaft of the power motor (21) passes through the filter screen (10); the sweeping rod (22) is set close to the upper surface of the filter area (12), the length of the sweeping rod (22) is equal to the radius of the fan-shaped filter area (12), and one end is fixed to the output shaft of the power motor (21). The drive motor rotates and drives the sweeping rod to swing, so as to sweep away the rice blocked by the mesh. The sweeping rod (22) is a roller structure, including a main shaft (23), a rolling sleeve (24) and an end cap (25); the end of the main shaft (23) near the power motor (21) is stepped, and the rolling sleeve (24) is sleeved on the outer circumference of the main shaft (23) through a rotating structure; the end cap (25) is located at the free end of the main shaft (23) to restrict the rolling sleeve (24) from sliding out; And a guide plate (30), with a guide plate (30) above each power motor (21) covering the connection area between the rolling sleeve (24) and the main shaft (23) steps.

2. The stepped rice filtration device according to claim 1, characterized in that, The fan-shaped filter area (12) has a semi-circular structure.

3. The stepped rice filtration device according to claim 1, characterized in that, The filter screen (10) has a guide post (131) on its side baffle (13), and the housing (11) has a horizontally extending strip hole (111) at the corresponding position. The guide post (131) can move back and forth along the strip hole (111).

4. The stepped rice filtration device according to claim 1, characterized in that, The shell (11) has a feed hopper (113) at the top and a discharge hopper at the bottom.

5. A stepped rice filtration device according to claim 1, characterized in that, The outer end face of the rolling sleeve (24) is provided with a recessed groove (241), and the end cover (25) is a circular cover with a diameter larger than that of the main shaft (23). The end cover (25) is embedded in the groove (241) and fixed to the free end of the main shaft (23) by threads.

6. A stepped rice filtration device according to claim 1, characterized in that, Each filter zone (12) has an arc-shaped guide plate (14) at its end, which is used to collect the filtered rice to the center of the filter screen (10) and guide it to the center of the next filter zone (12).

7. A stepped rice filtration device according to claim 6, characterized in that, The curvature of the guide plate (14) matches the curvature of the edge of the fan-shaped filter area (12).

8. A stepped rice filtration device according to claim 1, characterized in that, The end velocity of the sweeper (22) is 0.3 to 0.5 m / s.

9. A stepped rice filtration device according to claim 1, characterized in that, The angle of inclination of the filter screen (10) is 15 to 25 degrees.

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