Impurity and stone removing device for rice processing

Abstract

The utility model discloses an impurity and stone removing device for rice processing, and belongs to the technical field of impurity and stone removing equipment for rice. The machine shell comprises a shell body and a discharging hopper; a discharge hole is formed in the bottom of the shell; the discharging hopper is movably and obliquely arranged in the shell; one end of the discharge hopper extends out of the discharge hole; the impurity removal assembly comprises a motor, a vibration part for vibrating the discharging hopper, a first screen, a second screen and a third screen; the first screen is obliquely arranged at the top of the shell; the inclination direction of the first screen is opposite to that of the discharging hopper; the second screen is arranged in one end, far away from the discharge hole, of the discharge hopper; the third screen is arranged in one end, close to the discharge hole, of the discharge hopper; the vibrating piece is connected with the discharging hopper and the motor; the aperture of the first screen is larger than that of the third screen. When stone is removed, impurities large in size and broken rice small in particle size are removed at the same time, and the impurity and stone removing effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of rice impurity removal and stone removal equipment, and particularly relates to an impurity removal and stone removal device for rice processing. Background Art

[0002] The rice processing process generally includes cleaning the raw grain, husking (husking using a rice husker, usually equipped with air separation to remove the husk), separating the rice from the brown rice (using a rice husker separation screen), separating the immature grains from the brown rice, milling (rice milling machine, generally with one sand and two irons, or three irons with a polisher, depending on the rice quality in the north and south), grading the white rice (using a rice grading screen), color sorting (using a color sorter), polishing, and packaging. During the rice-brown separation process, a destoner is required to separate the stones from the rice.

[0003] Most of the existing rice stone removing machines are specific gravity stone removing machines. For example, the utility model with patent publication number CN215507747U discloses a suction specific gravity stone removing machine for removing impurities from rice. The stone removing machine includes a shell; a rotating shaft frame is installed at the bottom inner side of the shell, a rotating shaft is movably installed on the top of the rotating shaft frame, a bracket is movably installed in the rotating shaft frame through the rotating shaft, a sieve plate is fixedly installed on the top of the bracket, and vibration motors are installed on both sides of the bottom of the sieve plate; a gear A is fixedly installed on the bottom end of the bracket, and a servo motor is installed at the bottom inner side of the shell and on the right side of the rotating shaft frame.

[0004] The above-mentioned utility model uses a servo motor to drive gears B and A to rotate, thereby driving the bracket on the rotating shaft to rotate, ultimately completing the adjustment of the screen plate's tilt angle, making it suitable for screening different feeding speeds or different types of rice. This greatly improves applicability and prevents the impact of different feeding speeds or rice types on screening accuracy. The adjustment method is simple, convenient, and highly practical. However, when rice is destoned by gravity, the rice will contain impurities such as broken rice and straw, which are difficult to remove using a vacuum blower, resulting in poor rice decontamination effect. Utility Model Content

[0005] The utility model provides a device for removing impurities and stones for rice processing, so as to solve the technical problems mentioned in the background technology.

[0006] In order to achieve the above objectives, the present invention adopts the following technical solutions:

[0007] A device for removing impurities and stones for rice processing, comprising: a casing, including a shell and a discharging hopper; a discharging port is provided at the bottom of the shell; the discharging hopper is movably and tiltedly arranged in the shell; one end of the discharging hopper extends out of the discharging port; an impurity removal component, comprising a motor, a vibrating member for vibrating the discharging hopper, a first screen, a second screen and a third screen; the first screen is tiltedly arranged at the top of the shell; the tilt direction of the first screen is opposite to the tilt direction of the discharging hopper; the second screen is arranged in the end of the discharging hopper away from the discharging port; the third screen is arranged in the end of the discharging hopper close to the discharging port; the vibrating member is connected to the discharging hopper and the motor; the aperture of the first screen is larger than the aperture of the third screen.

[0008] As a further improvement of the technical solution, the casing also includes a collecting hopper; the collecting hopper is arranged in the shell; the collecting hopper is located between the first screen and the second screen; the discharge end of the collecting hopper is toward the end of the discharge hopper close to the first screen.

[0009] As a further improvement of the technical solution, the casing also includes a first discharge port; the first discharge port is opened on the shell corresponding to the end of the first screen close to the second screen; the first discharge port is connected to the first screen; a baffle is obliquely arranged on the end of the first screen close to the first discharge port.

[0010] As a further improvement of the technical solution, the casing further includes a second discharge port; the second discharge port is opened at one end of the discharge hopper where the third screen is provided; the second discharge port is located directly below the third screen.

[0011] As a further improvement of the technical solution, the second screen includes a sieve plate and a convex groove; the convex groove is provided on the slot hole of the sieve plate; the notch of the convex groove faces away from the discharge port.

[0012] As a further improvement of the technical solution, the casing further includes a third discharge port; the third discharge port is opened on the casing corresponding to the second screen; and the second screen is communicated with the third discharge port.

[0013] As a further improvement of the technical solution, the casing also includes a first rod and a second rod; the first rod is arranged in the casing, between the first screen and the second screen; the direction of the first rod is parallel to the width direction of the discharge hopper; one end of the second rod is hinged to the first rod, and the other end is hinged to the discharge hopper.

[0014] As a further improvement of the technical solution, the impurity removal component also includes a shaft; the motor is connected to the vibrating member through the shaft; the shaft is rotatably arranged in the shell; the shaft is located directly below the second screen; one end of the vibrating member is connected to the shaft, and the other end thereof is hinged to the bottom surface of the discharge hopper.

[0015] As a further improvement of the technical solution, the vibrating member is an eccentric wheel connecting rod structure.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] The utility model can remove large-volume impurities and small-particle broken rice at the same time when removing stones, and has good impurity and stone removal effects. When in use, the motor is started, the motor drives the vibrating member to move, and the vibrating member drives the discharge hopper to vibrate, and then the rice is poured toward the end of the first screen away from the first discharge port. The rice moves toward the first discharge port on the first screen. During the movement, the rice particles pass through the first screen, while large debris such as large stones and straw that do not pass through the first screen continue to move toward the first discharge port and are discharged through the first discharge port. The rice that passes through the first screen falls into the collecting hopper, and the collecting hopper collects the rice that falls off the first screen. , and is transported toward the end of the discharge hopper away from the discharge port. The rice falls onto the second screen on the discharge hopper. The vibration of the second screen and the airflow passing through the rice layer increase the distance between rice particles, processing the fluidized state, and promoting its automatic stratification. Impurities with heavier specific gravity sink to the bottom layer and contact the screen surface of the second screen. Under the action of the inertia force of the second screen vibration system and the airflow, they slide upward relative to the second screen and are then collected. Rice with lighter specific gravity floats to the upper layer and moves to the third screen under the push of gravity, inertia and continuous feeding. When passing through the third screen, broken rice with smaller particle size passes through the third screen and is discharged through the second discharge port. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the structure of a device for removing impurities and stones for rice processing. Figure 1 ;

[0020] Figure 2 The structure diagram provided by the utility model Figure 2 ;

[0021] Figure 3 The structure diagram provided by the utility model Figure 3 ;

[0022] Figure 4 for Figure 1 A top view of

[0023] Figure 5 for Figure 4 Cross-sectional view at AA in FIG;

[0024] Figure 6 A schematic diagram of the structure of the vibration element provided by the utility model;

[0025] Figure 7 A schematic structural diagram of the second screen provided by the present invention;

[0026] Figure markings: 1-casing, 11-shell, 12-discharge hopper, 13-collecting hopper, 14-first discharge port, 15-second discharge port, 16-third discharge port, 17-first rod, 18-second rod, 2-impurity removal component, 21-motor, 22-vibrating part, 23-first screen, 24-second screen, 241-sieve plate, 242-convex groove, 25-third screen, 26-shaft. DETAILED DESCRIPTION

[0027] To further clarify the objectives, technical solutions, and advantages of the embodiments of the present invention, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a portion of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments derived by persons of ordinary skill in the art without requiring creative effort are within the scope of protection of the present invention. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meanings understood by persons of ordinary skill in the field to which the present invention pertains.

[0028] The words "first", "second" and similar terms used in the specification and claims of the utility model invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular forms of "a", "an" or "the" and similar terms do not indicate a quantitative limitation, but rather indicate the presence of at least one. Words such as "include" or "comprise" mean that the elements or objects preceding "include" or "comprise" include the features, wholes, steps, operations, elements and / or components listed after "include" or "comprise", and do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] Example 1:

[0031] like Figures 1 to 5As shown, a device for removing impurities and stones for rice processing comprises: a housing 1 and an impurity removal assembly 2; the housing 1 comprises a shell 11, a discharge hopper 12, and a discharge port; the discharge port is formed at the bottom of the shell 11; the discharge hopper 12 is movably and tiltedly arranged in the shell 11; the lower end of the discharge hopper 12 extends out of the discharge port; the impurity removal assembly 2 comprises a motor 21, a vibrating member 22 for vibrating the discharge hopper 12, a first screen 23, a second screen 24, and a third screen 25; the first screen 23 is tiltedly arranged at the top of the shell 11, directly above the discharge hopper 12; the tilt direction of the first screen 23 is opposite to the tilt direction of the discharge hopper 12; The second screen 24 is arranged in the end of the discharge hopper 12 away from the discharge port; the third screen 25 is arranged in the end of the discharge hopper 12 close to the discharge port; the vibrating member 22 is connected to the discharge hopper 12 and the motor 21; the aperture of the first screen 23 is larger than the aperture of the third screen 25, wherein the first screen 23 is used to discharge large stones, the second screen 24 is used to screen the small stones in the rice, and the third screen 25 is used to screen the broken rice in the rice; optionally, the area of ​​the discharge hopper 12 corresponding to the second screen 24 is provided with a slot, and a fan is provided below the slot to blow air toward the bottom surface of the second screen 24 to increase the porosity between the rice particles. In addition, it should be noted that the specific model of the motor is not an improvement point of this application and will not be described here.

[0032] like Figure 5 As shown, preferably, the casing 1 further includes a collecting hopper 13; the collecting hopper 13 is arranged in the casing 11; the collecting hopper 13 is located between the first screen 23 and the second screen 24; the discharge end of the collecting hopper 13 faces the end of the discharge hopper 12 close to the first screen 23; the collecting hopper 13 is used to collect rice and pebbles that fall from the first screen 23, and collect and transport them to the end of the second screen 24 close to the first screen 23, that is, the higher end of the first screen 23.

[0033] like Figures 1 to 5 As shown, preferably, the casing 1 further includes a first discharge port 14; the first discharge port 14 is opened on the casing 11 at one end of the first screen 23 close to the second screen 24; the first discharge port 14 is connected to the first screen 23, and the first discharge port 14 discharges the debris that has not fallen off the first screen 23; a baffle is obliquely provided at one end of the first screen 23 close to the first discharge port 14, and the baffle blocks the rice, reduces its sliding speed, and prevents the rice from tilting and sliding too fast to be discharged from the first discharge port 14.

[0034] like Figures 1 to 5As shown, preferably, the housing 1 further includes a second discharge port 15; the second discharge port 15 is opened at one end of the discharge hopper 12 provided with a third screen 25; the second discharge port 15 is located directly below the third screen 25, and the second discharge port 15 can be provided with a hopper for collecting broken rice; after the rice passes through the third screen 25, the broken rice with smaller particle size passes through the third screen 25, falls into the hopper, and is discharged.

[0035] Working method:

[0036] During use, the motor 21 is started, and the motor 21 drives the vibrating member 22 to move, and the vibrating member 22 drives the discharge hopper 12 to vibrate, and then the rice is poured toward the end of the first screen 23 away from the first discharge port 14, and the rice moves toward the first discharge port 14 on the first screen 23. During the movement, the rice particles pass through the first screen 23, while large rocks, straw and other large debris that do not pass through the first screen 23 continue to move toward the first discharge port 14 and are discharged through the first discharge port 14. The rice that passes through the first screen 23 falls into the collecting hopper 13, and the collecting hopper 13 collects the rice that falls from the first screen 23 and transports it toward the end of the discharge hopper 12 away from the discharge port, and the rice falls onto the second screen 24 on the discharge hopper 12 The vibration of the second screen 24 and the airflow passing through the rice layer increase the distance between rice particles, process the fluidized state, and promote its automatic stratification. Impurities with heavier specific gravity sink to the bottom layer and contact the screen surface of the second screen 24. Under the action of the inertia force of the vibration system of the second screen 24 and the airflow, they slide upward relative to the second screen 24 and are collected. Rice with lighter specific gravity floats to the upper layer and moves to the third screen 25 under the driving force of gravity, inertia and continuous feeding. When passing through the third screen 25, broken rice with smaller particle size passes through the third screen 25 and is discharged through the second discharge port 15. When removing stones, both larger impurities and smaller broken rice are removed at the same time, and the impurity and stone removal effect is good.

[0037] like Figure 6 As shown, preferably, the second screen 24 includes a sieve plate 241 and a convex groove 242; the convex groove 242 is provided on the slot hole of the sieve plate 241; the notch of the convex groove 242 is facing away from the discharge port, and the stones and rice are better stratified by the convex groove 242; the convex groove 242 can be staggered to fill the gap, and the convex groove 242 blocks the stones on the sieve plate 241 to prevent the stones from sliding downward. At the same time, when the discharge hopper 12 vibrates, the stones move upward, thereby blocking the stones on the sieve plate 241 from sliding downward.

[0038] like Figures 1 to 5 As shown, the casing 1 further includes a third discharge port 16; the third discharge port 16 corresponds to the second screen 24 opened on the casing 11; the second screen 24 is connected to the third discharge port 16, and optionally, a baffle is obliquely provided on the second screen 24 to facilitate the centralized discharge of stones.

[0039] Example 2:

[0040] like Figure 5 As shown, compared with embodiment 1, the difference is that a connection structure between the discharge hopper 12 and the shell 11 is provided, and the support casing 1 also includes a first rod body 17 and a second rod body 18; the first rod body 17 is arranged in the shell 11, between the first screen 23 and the second screen 24; the direction of the first rod body 17 is parallel to the width direction of the discharge hopper 12; one end of the second rod body 18 is hinged to the first rod body 17, and the other end thereof is hinged to the discharge hopper 12, so that the receiving hopper 12 swings in the shell 11.

[0041] like Figures 1 to 4 As shown, preferably, the impurity removal component 2 further includes a shaft 26; the motor 21 is connected to the vibrating member 22 through the shaft 26; the shaft 26 is rotatably arranged in the housing 11; the shaft 26 is located directly below the second screen 24; one end of the vibrating member 22 is connected to the shaft 26, and the other end thereof is hinged to the bottom surface of the discharge hopper 12; the motor 21 is mechanically connected to the shaft 26 to drive the shaft 26 to rotate; Figure 5 and Figure 6 As shown preferably, the vibrating member 22 is an eccentric wheel connecting rod structure, and the vibrating member 22 includes an eccentric wheel and a connecting rod of a circular ring; the eccentric wheel is movably connected to the inner wall of the circular ring and rotates inside the circular ring, and one end of the connecting rod is connected to the outer wall of the circular ring to form an eccentric connecting mechanism; when the vibrating member 22 is connected to the shaft body 26 and the discharge hopper 12, the eccentric wheel is connected to the shaft body, and the end of the connecting rod away from the circular ring is hinged to the bottom surface of the discharge hopper 12; when the motor 21 drives the shaft body 26 to rotate, the eccentric wheel rotates with the shaft body, and the circular ring and the connecting rod move back and forth with the rotation of the eccentric wheel, thereby driving the discharge hopper 12 to continuously shake in the shell 11 to form vibration.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for removing impurities and stones for rice processing, characterized in that: include: The casing (1) comprises a shell (11) and a discharge hopper (12); a discharge port is provided at the bottom of the shell (11); the discharge hopper (12) is movably and tiltably arranged in the shell (11); one end of the discharge hopper (12) extends out of the discharge port; The impurity removal component (2) comprises a motor (21), a vibrating member (22) for vibrating the discharge hopper (12), a first screen (23), a second screen (24) and a third screen (25); the first screen (23) is arranged obliquely on the top of the housing (11); the inclination direction of the first screen (23) is opposite to the inclination direction of the discharge hopper (12); the second screen (24) is arranged in an end of the discharge hopper (12) away from the discharge port; the third screen (25) is arranged in an end of the discharge hopper (12) close to the discharge port; the vibrating member (22) is connected to the discharge hopper (12) and the motor (21); the aperture of the first screen (23) is larger than the aperture of the third screen (25).

2. The impurity and stone removal device for rice processing according to claim 1, characterized in that: The housing (1) further comprises a collecting hopper (13); the collecting hopper (13) is arranged in the housing (11); the collecting hopper (13) is located between the first screen (23) and the second screen (24); a discharge end of the collecting hopper (13) faces the end of the discharge hopper (12) close to the first screen (23).

3. The impurity and stone removal device for rice processing according to claim 2, characterized in that: The housing (1) further comprises a first discharge port (14); the first discharge port (14) is opened on the housing (11) at an end of the first screen (23) close to the second screen (24); the first discharge port (14) is communicated with the first screen (23); a baffle is obliquely provided at an end of the first screen (23) close to the first discharge port (14).

4. The impurity and stone removal device for rice processing according to claim 1, characterized in that: The housing (1) further comprises a second discharge port (15); the second discharge port (15) is opened at one end of the discharge hopper (12) provided with the third screen (25); the second discharge port (15) is located directly below the third screen (25).

5. The impurity and stone removal device for rice processing according to claim 1, characterized in that: The second screen (24) comprises a screen plate (241) and a convex groove (242); the convex groove (242) is provided on the slot hole of the screen plate (241); and the notch of the convex groove (242) faces away from the discharge port.

6. The impurity and stone removal device for rice processing according to claim 1, characterized in that: The housing (1) further comprises a third discharge port (16); the third discharge port (16) is opened on the housing (11) corresponding to the second screen (24); the second screen (24) is communicated with the third discharge port (16).

7. The impurity and stone removal device for rice processing according to any one of claims 1 to 6, characterized in that: The housing (1) further comprises a first rod (17) and a second rod (18); the first rod (17) is arranged in the housing (11) and is located between the first screen (23) and the second screen (24); the first rod (17) is oriented parallel to the width direction of the discharge hopper (12); one end of the second rod (18) is hinged to the first rod (17), and the other end thereof is hinged to the discharge hopper (12).

8. The impurity and stone removal device for rice processing according to claim 7, characterized in that: The impurity removal component (2) further includes a shaft (26); the motor (21) is connected to the vibrating member (22) via the shaft (26); the shaft (26) is rotatably disposed within the housing (11); the shaft (26) is located directly below the second screen (24); one end of the vibrating member (22) is connected to the shaft (26), and the other end thereof is hinged to the bottom surface of the discharge hopper (12).

9. The impurity and stone removal device for rice processing according to claim 1, characterized in that: The vibrating member (22) is an eccentric wheel connecting rod structure.

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