A rice sieving machine for rice processing

Abstract

This invention provides a rice sieving machine for rice processing, including a husk separation device, a screening device, a waste removal box, and a tipping elevator. The waste removal box contains a rice hopper and a waste removal fan. One end of the waste removal fan has a material outlet for discharging some waste such as weeds and silt. The husk separation device contains a primary screening group, a secondary separation group, and a waste separation group. A tile screen separation group is located between the secondary separation group and the waste separation group. The primary screening group is used to separate the two types of materials, the secondary separation group is used to separate the husk from the rice, and the waste separation group has two material outlets at the bottom for separating materials such as bran. The screening device is used for fine separation of rice. This device removes stalks, weeds, silt, animal and plant carcasses, black ears, bran, broken rice, chaff, etc., and introduces them into separate material inlets in batches and categories, making it convenient to collect all waste materials and directly convert them into waste materials for rapid reuse.

Description

Technical Field

[0001] This invention relates to the field of rice processing and screening equipment technology, specifically a rice screening machine for rice processing. Background Technology

[0002] The process of processing rice into polished rice involves multiple steps, including impurity removal, grinding, and polishing. The processed rice then requires multiple sieving operations for quality control to effectively obtain high-quality polished rice. Furthermore, the separation of all products during processing needs to be controlled to ensure the orderly progress of rice processing. Currently, large-scale integrated rice milling machines are often used in agricultural rice production and processing facilities to control different materials. However, in actual production, several problems have emerged. For example, the separated impurities cannot be clearly distinguished, making them unsuitable for direct reuse and requiring further sieving; the production generates significant noise, smoke, and dust, severely impacting the workspace; and it cannot separate high-quality polished rice suitable for refined, high-quality rice processing.

[0003] To achieve the above objectives, the present invention provides a rice sieving machine and sieving method for rice processing, which can solve the problems mentioned in the background art. Summary of the Invention

[0004] The present invention adopts the following technical solution:

[0005] A rice sieving machine for rice processing includes a husk separation device, a screening device, a waste removal box, and a tipping elevator. The tipping elevator is installed on one side of the waste removal box and its bottom is connected to the waste removal box. The tipping elevator and the screening device are located on the feed end and discharge end of the husk separation device, respectively. Above the waste removal box, there is a rice hopper and a waste removal fan. The feed end of the waste removal fan is connected to the bottom of the rice hopper, and one end of the waste removal fan has a material outlet for discharging some weeds and silt. The upper part of the husk separation device is the feed end, and its interior is arranged from top to bottom as a primary screening group, a secondary separation group, and a waste separation group. A tile screen separation group is provided between the secondary separation group and the waste separation group. The primary screening group is used to separate the two types of materials, the secondary separation group is used to separate the husk from the rice, and the waste separation group has two material outlets at the bottom for separating bran. The screening device is used for fine separation of rice.

[0006] The secondary separation unit includes a rice milling machine. The shell separation device has a mounting frame inside. The rice milling machine is located above the mounting frame. The upper wall of the mounting frame has a double-layer tile screen. The double-layer tile screen is a disc with gears on the edge. The mounting frame has two tile screen drive motors. The drive end of the tile screen drive motor meshes with the gear edge of the double-layer tile screen through the gear port. The gear discs at the output ends of the two tile screen drive motors rotate in opposite directions.

[0007] The waste separation unit includes a separation hopper connected to the bottom of the mounting frame. The bottom of the shell separation device is equipped with a bran storage compartment. The bottom of the separation hopper is equipped with a dustproof separation fan. The center of the bottom of the dustproof separation fan is connected to an intermediate hopper. A ring of side discharge ports is provided at the bottom edge of the dustproof separation fan. The side discharge ports are connected to the bran storage compartment.

[0008] The bottom of the double-layer tile screen is connected to an arc-shaped baffle plate with the arc surface facing downwards. The maximum curved diameter of the arc-shaped baffle plate is greater than the maximum circular diameter of the blades of the dust separation fan. The maximum circular diameter of the side discharge port is also greater than the maximum circular diameter of the blades of the dust separation fan.

[0009] The shell separation device has a side wall groove on the side wall near the screening device, and a fish scale plate stone picker is elastically connected inside the side wall groove.

[0010] The screening device also includes a double separation barrel. A separation motor is located above the double separation barrel, and the output end of the separation motor is connected to a rotating hopper facing downwards. The bottom of the rotating hopper is an inclined hopper. A feed inlet is located above the double separation barrel. The bottom end of the fish scale plate stone picker is matched with the feed inlet of the double separation barrel. The higher end of the fish scale plate stone picker is provided with a hanging ear plate that matches the side wall through groove. The bottom inclined surface of the rotating hopper is provided with multiple straight separation grooves. The straight separation grooves include multiple leakage grooves at the bottom. The leakage grooves gradually increase in gap from the bottom of the inclined surface of the rotating hopper to the top of the circumference of the rotating hopper. The bottom of the rotating hopper is provided with a secondary rice separation chamber and a grain storage tank. The side wall of the secondary rice separation chamber is connected to a rotating interface through a connecting rod. The rotating interface is fixed inside the double separation barrel. The grain storage tank is located at the bottom of the double separation barrel.

[0011] The sieve can break off some of the longer and thinner rice straw impurities; the rice is thrown out by the centrifugal force provided by the linear separation tank and the separation motor. When the gap in the material leakage tank is larger than the gap between the rice grains, the plumper rice grains fall into the grain storage tank, while the poorer rice grains fall into the broken rice secondary separation chamber.

[0012] In one embodiment, the impurity removal box further includes a material working platform and a louvered slide. The louvered slide is connected between the outlet end of the rice hopper and the inlet end of the impurity removal fan. The material working platform is located on one side of the rice hopper for placing rice. The rice outlet end of the impurity removal fan is connected to the bottom of the tipping bucket elevator. The impurity removal box is provided with an extension and closure of the lifting chamber. The edge of the extension and closure of the lifting chamber is fitted with the outer shell of the impurity removal fan. The extension and closure of the lifting chamber connects the outlet end of the impurity removal fan and the inlet end of the tipping bucket elevator. An air vent pipe is provided on the side of the impurity removal fan.

[0013] In one embodiment, the tipping bucket elevator includes a lifting box, inside which are provided two fixed rollers, one end of the lower fixed roller extends out of the tipping bucket elevator and is mounted on a drive motor base, and a belt drive conveyor is connected between the two fixed rollers, with multiple long trough tipping buckets evenly arranged on the drive conveyor.

[0014] The top of the tipping bucket elevator is located on the side near the shell separation device. Above and below the material outlet of the tipping bucket elevator are cover plates and guide plates, respectively. The guide plates are inclined plates and their bottoms are fixed to the top of the primary screening group.

[0015] In one embodiment, the primary screening group includes an inclined chute hopper and a vibrating screen. Multiple buffer springs are connected between the two sides of the vibrating screen and the two side walls of the inclined chute hopper. A vibrator is provided at the bottom of the vibrating screen. The top of the shell separation device is an inclined top surface. The inclination angle of the vibrating screen is parallel to the inclined top surface of the shell separation device. A cover plate collection groove is provided on the lower side of the inclined top surface of the shell separation device. The cover plate collection groove is a semi-circular arc groove, and its central axis is located at the same position as the top edge line of the shell separation device.

[0016] The bottom of the inclined chute material hopper is equipped with a switch slot, and the inside of the switch slot is equipped with a rotatable material baffle. An external material switch is connected to one side of the material baffle and is located on the outer wall of the shell separation device. The bottom of the switch slot is connected to the feed end of the secondary separation group.

[0017] In one embodiment, a material outlet is provided on the side of the shell separation device near the discharge end of the rice milling machine, and a rice outlet guide plate is provided between the material outlet and the rice milling machine. A rice milling machine is provided at one end.

[0018] In one embodiment, the bottom of the shell separation device is provided with a drive host, the output end of the drive host is connected to a double-layer transmission guide wheel, the drive end of the rice milling machine is connected to a second double-layer transmission wheel, the double-layer transmission guide wheel and the second double-layer transmission wheel are connected by a belt drive, and the other layer of the double-layer transmission guide wheel is connected to the transmission motor base at the bottom of the tipping bucket elevator by a belt drive.

[0019] In one embodiment, a stone inlet is provided above the side wall through groove, a stone outlet is provided below the side wall through groove, and a vibrator is fixedly connected to the fish scale plate stone picker.

[0020] In one embodiment, the side wall of the dual separation tank is provided with an annular hanging lug seat.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] This invention uses a waste removal box, a shell separation device, and a screening device to separate impurities other than rice from rice into five categories: a first-class material outlet (excluding light impurities such as rice stems), a cover plate collection trough (second-class material outlet), a side discharge port (third-class material outlet), an intermediate hopper (fourth-class material outlet), and a grain storage bin (fifth-class material outlet). This process removes rice stems, weeds, silt, animal and plant carcasses, black stalks, bran, broken rice, and mill chaff, and then sorts and directs these materials into separate material inlets in batches. This facilitates the collection of all waste materials and allows for the direct separation of waste materials into reusable materials during the rice processing process, improving the environmental friendliness and production efficiency of the equipment.

[0023] This device can process paddy into rice in one go through a multi-stage husk separation device during the production process, and can effectively separate the rice. At the same time, the processing speed of this device can be controlled by controlling the drive host, which can effectively improve the processing efficiency. Combined with the sieving effect of the sieving device, it can achieve effective processing and sieving of paddy, and realize the fine processing of rice.

[0024] The internal vibration-generating devices, such as the fish-scale stone picker, vibrating screen, and double-layer tile screen, are all set up separately, and the connections between them and their surroundings are all flexible, which can greatly reduce the amount of vibration of the overall device and significantly reduce the overall vibration noise. At the same time, the device has pipes or enclosed structures connected to the air outlet space, dust outlet space, and slag storage space to control smoke and dust, which can greatly reduce the impact of the device on the working space. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a side cross-sectional view of the structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the internal structure of the impurity removal box of the present invention;

[0028] Figure 4 This is a schematic diagram of the rotating hopper of the present invention.

[0029] In the diagram: 1. Shell separation device; 2. Screening device; 3. Impurity removal box; 4. Tipping bucket elevator;

[0030] 101. Primary screening group; 102. Secondary separation group; 103. Waste separation group; 104. Vibrating screen; 105. Buffer spring; 106. Vibrator; 107. Inclined chute material hopper; 108. Material baffle; 109. Cover plate collection trough; 110. Switch slot; 111. External material switch; 112. Rice milling machine; 113. Drive unit; 114. Double-layer transmission guide wheel; 115. Second double... 116. Layer drive wheel; 117. Rice regulator; 118. Mounting frame; 119. Double-layer tile sieve; 120. Rice outlet guide plate; 121. Tile sieve drive motor; 122. Arc-shaped baffle plate; 123. Separating hopper; 124. Dustproof separating fan; 125. Side discharge port; 126. Intermediate hopper; 127. Bran storage bin; 128. Side wall through groove; 129. Stone inlet; 120. Stone outlet.

[0031] 201. Fish-scale stone picker; 202. Double separation bucket; 203. Separation motor; 204. Rotary hopper; 205. Linear separation trough; 206. Leakage trough; 207. Rotary interface; 208. Secondary rice separation chamber; 209. Annular hanging ear seat; 210. Grain storage bucket;

[0032] 301. Material handling platform; 302. Rice stalk hopper; 303. Louvered chute; 304. Impurity removal fan; 305. Category I material outlet; 306. Lifting chamber extension and sealing opening; 307. Air vent pipe;

[0033] 401. Fixed roller; 402. Drive motor base; 403. Long trough tipping bucket; 404. Cover plate; 405. Guide plate. Detailed Implementation

[0034] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0035] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] The present invention will be further described in detail below with reference to the accompanying drawings.

[0038] In one embodiment of the present invention:

[0039] Please refer to the attached document carefully. Figure 1-3 This screening device includes a shell separation device 1, a screening device 2, a waste removal box 3, and a tipping bucket elevator 4. The tipping bucket elevator 4 is installed on one side of the waste removal box 3 and its bottom is connected to the waste removal box 3. The tipping bucket elevator 4 and the screening device 2 are respectively located on the feed end and discharge end side of the shell separation device 1.

[0040] Above the impurity removal box 3 is a rice stalk 302 and an impurity removal fan 304. The feed end of the impurity removal fan 304 is connected to the bottom of the rice stalk 302. One end of the impurity removal fan 304 is provided with a material outlet 305 for discharging some waste materials such as weeds and silt.

[0041] The upper part of the husk separation device 1 is the feeding end, and its interior is arranged from top to bottom as follows: a primary screening group 101, a secondary separation group 102, and a waste separation group 103. A tile screen separation group is provided between the secondary separation group 102 and the waste separation group 103. The primary screening group 101 is used to separate two types of materials, the secondary separation group 102 is used to separate the husk from the rice, and the waste separation group 103 has two material outlets at the bottom for separating materials such as bran. The screening device 2 is used for fine separation of rice.

[0042] The primary screening group 101 includes an inclined chute material hopper 107 and a vibrating screen 104. Multiple buffer springs 105 are connected between the two sides of the vibrating screen 104 and the two side walls of the inclined chute material hopper 107. A vibrator 106 is provided at the bottom of the vibrating screen 104. The top of the shell separation device 1 is an inclined top surface. The inclination angle of the vibrating screen 104 is parallel to the inclined top surface of the shell separation device 1. A cover plate collection groove 109 is provided on the lower side of the inclined top surface of the shell separation device 1. The cover plate collection groove 109 is a semi-circular arc groove, and its central axis is located at the same position as the top edge line of the shell separation device 1.

[0043] The bottom of the inclined material hopper 107 is provided with a switch slot 110. Inside the switch slot 110 is a rotatable material baffle 108. An external material switch 111 is connected to one side of the material baffle 108. The external material switch 111 is located on the outer wall of the shell separation device 1. The bottom of the switch slot 110 is connected to the feed end of the secondary separation group 102.

[0044] Please refer to this carefully. Figure 1-3 The secondary separation group 102 includes a rice milling machine 112. The shell separation device 1 is provided with a mounting frame 117 inside. The rice milling machine 112 is located above the mounting frame 117. The side of the shell separation device 1 is provided with a material outlet near the discharge end of the rice milling machine 112 and is connected to the rice milling machine 112 with a rice outlet guide plate 119. One end of the rice milling machine 112 is provided with a polished rice regulator 116.

[0045] The upper wall of the mounting frame 117 is provided with a double-layer tile screen 118. The double-layer tile screen 118 is a disc with gears on the edge. The mounting frame 117 is provided with two tile screen drive motors 120. The drive end of the tile screen drive motor 120 meshes with the gear edge of the double-layer tile screen 118 through the gear port. The gear disks at the output ends of the two tile screen drive motors 120 rotate in opposite directions.

[0046] Please refer to this carefully. Figure 2 , Figure 3 The waste separation unit 103 includes a separation hopper 122 connected to the bottom of the mounting frame 117. The bottom of the shell separation device 1 is provided with a bran storage compartment 126. The bottom of the separation hopper 122 is provided with a dustproof separation fan 123. The center of the bottom of the dustproof separation fan 123 is connected to an intermediate hopper 125. A ring of side discharge ports 124 is provided at the bottom edge of the dustproof separation fan 123. The side discharge ports 124 are connected to the bran storage compartment 126.

[0047] The bottom of the double-layer tile screen 118 is connected to an arc-shaped baffle plate 121. The arc surface of the arc-shaped baffle plate 121 faces downward. The maximum curved diameter of the arc-shaped baffle plate 121 is greater than the maximum circular diameter of the blades of the dustproof separation fan 123. The maximum circular diameter of the side outlet 124 is greater than the maximum circular diameter of the blades of the dustproof separation fan 123.

[0048] The bottom of the shell separation device 1 is provided with a drive host 113. The output end of the drive fan is connected to a double-layer transmission guide wheel 114. The drive end of the rice milling machine 112 is connected to a second double-layer transmission wheel 115. The double-layer transmission guide wheel 114 and the second double-layer transmission wheel 115 are connected by a belt drive. The other layer of the double-layer transmission guide wheel 114 is connected to the transmission motor base 402 at the bottom of the tipping bucket elevator 4 by a belt drive.

[0049] The primary screening group 101, secondary separation group 102, waste separation group 103 in the shell separation device 1 of this device, as well as the impurity removal fan 304 in the impurity removal box 3 and the grain storage hopper 210 in the screening device 2, are used to separate different materials and discharge them separately from this device. In addition to the cross-sectional description above, the top slope of the primary screening group 101 is close to the bottom of the guide plate 405. Multiple rows of buffer springs 105 can be set on both sides of the vibrating screen 104 to cooperate with the vibrator 106 to shake and vibrate, thereby playing a guiding and screening role. At the top position of the tipping bucket elevator 4 or the shell One side of the separation device 1 can use various methods such as wind guidance and baffle guidance to introduce the black ears inside the rice into the cover plate collection trough 109. The cover plate collection trough 109 has openings on both sides (not shown in the figure). When cleaning the black ears and debris, they can be separated from both sides of the cover plate collection trough 109. One side of the inside of the switch slot 110 is an arc surface, and its arc center point is the same as the rotation center point of the material baffle 108. The connecting rod between the external material switch 111 and the material baffle 108 passes through the side wall of the shell separation device 1 and is connected to the side wall with a threaded buckle, which facilitates rotation to open and close or adjust the rice flow rate.

[0050] The secondary separation group 102 can be any rice milling machine 112 with existing technology. A hole is set at the bottom of its bran outlet end so that the material at the bran outlet end can enter the tile screen for screening. The tile screen can break some of the longer and thinner rice straw impurities through the reverse effect of the two tile screen drive motors 120, which can effectively improve the separation effect of the dust separation fan 123.

[0051] Regarding the separation effect of the waste separation unit 103, it is mainly as follows: the slag, bran, and wheat bran fall through the sieve to the upper part of the arc-shaped baffle plate 121. Due to the arc effect, they gather from the separation hopper 122 towards the middle and fall to the dust-proof separation fan 123. The dust-proof separation fan 123 is a DC fan. Some of the heavier broken rice falls through the gap of the dust-proof separation fan 123 into the middle hopper 125. Some bounce back to the top and fall again or enter the bran storage chamber 126. The lighter bran, wheat bran, and other materials are blown up by the effect of the dust-proof separation fan 123 to the bottom of the arc-shaped baffle plate 121 and gradually accumulate. They are gradually guided to the bottom end of the arc-shaped baffle plate 121 and the air action area of ​​the dust-proof separation fan 123, and then fall to the side outlet 124 and enter the bran storage chamber 126.

[0052] In yet another embodiment of the present invention:

[0053] Please refer to this carefully. Figure 2 The impurity removal box 3 also includes a material working platform 301 and a louvered slide 303. The louvered slide 303 connects the outlet end of the rice hopper 302 and the inlet end of the impurity removal fan 304. The material working platform 301 is located on one side of the rice hopper 302 for placing rice. The rice outlet end of the impurity removal fan 304 is connected to the bottom of the tipping elevator 4. The impurity removal box 3 has an extension and closure 306 inside the lifting chamber. The edge of the extension and closure 306 fits against the outer shell of the impurity removal fan 304. The extension and closure 306 connects the outlet end of the impurity removal fan 304 and the inlet end of the tipping elevator 4. The side of the impurity removal fan 304 is provided with an air vent pipe 307.

[0054] The impurity removal fan 304 is described below. It is a common impurity removal fan 304. Its main working principle is to separate light impurities from rice by blowing air through its internal air passage, and then discharge the rice to the bottom inlet of the tipping bucket elevator 4 through the fan blades.

[0055] Please refer to this carefully. Figure 1 The tipping bucket elevator 4 includes an elevator box, inside which are provided two fixed rollers 401, one end of the lower fixed roller 401 extends out of the tipping bucket elevator 4 and is mounted on a transmission motor base 402. A belt drive conveyor is connected between the two fixed rollers 401, and multiple long trough tipping buckets 403 are evenly arranged on the transmission conveyor.

[0056] The top of the tipping bucket elevator 4 is provided with a material outlet on the side near the shell separation device 1. Above and below the material outlet of the tipping bucket elevator 4, there are respectively a cover plate 404 and a guide plate 405. The guide plate 405 is an inclined plate and its bottom is fixed to the top of the primary screening group 101.

[0057] In another embodiment of the invention:

[0058] Please refer to this carefully. Figure 1-4 The shell separation device 1 has a side wall groove 127 on the side wall near the screening device 2. The side wall groove 127 has a stone inlet 128 above it and a stone outlet 129 below it. A fish scale plate stone picker 201 is elastically connected inside the side wall groove 127. A vibrator is fixedly connected to the fish scale plate stone picker 201.

[0059] The screening device 2 also includes a double separation barrel 202. A separation motor 203 is provided above the double separation barrel 202. The output end of the separation motor 203 is connected to a rotating hopper 204 facing downward. The bottom of the rotating hopper 204 is an inclined hopper. A feed inlet is provided above the double separation barrel 202. The bottom end of the fish scale plate stone picker 201 is matched with the feed inlet of the double separation barrel 202. The side of the higher end of the fish scale plate stone picker 201 is provided with a hanging ear plate that matches the side wall through groove 127.

[0060] The bottom inclined surface of the rotating hopper 204 is provided with a plurality of straight separation grooves 205. The straight separation grooves 205 include a plurality of material leakage grooves 206 at the bottom. The material leakage grooves 206 gradually increase in gap from the bottom of the inclined surface of the rotating hopper 204 to the top of the peripheral side of the rotating hopper 204.

[0061] The bottom of the rotating hopper 204 is provided with a secondary rice separation chamber 208 and a grain storage tank 210. The side wall of the secondary rice separation chamber 208 is connected to a rotating interface 207 via a connecting rod. The rotating interface 207 is fixed inside the double separation tank 202. The grain storage tank 210 is located at the bottom of the double separation tank 202. The side wall of the double separation tank 202 is provided with an annular hanging ear seat 209.

[0062] The screening effect of the screening device 2 includes the following two steps: The fish-scale stone picker 201 can be installed between the stone inlets 128. A certain frequency vibration is generated through an electrical connection, allowing heavier stones of the same volume to move towards the stone inlet 128 via a special vibration, while lighter grains of rice slide downwards. By adjusting the vibration frequency, the limit value for monitoring stone weight is changed. The operator observes and records the changes in the grains of rice and stones on the fish-scale stone picker 201. The installation position of the fish-scale stone picker 201 is not limited; it can be installed without being connected to any position, as long as it meets the requirement of being connected to the side wall groove 127. The feeding requirements around the separating motor 203 are met. For the refined rice sieving group, the refined rice is processed by entering the bearing range of the rotating hopper 204 through the feed port provided on the side wall of the separating motor 203. The rice is thrown out by the centrifugal force provided by the linear separation trough 205 and the separating motor 203. When the gap in the leakage trough 206 is larger than the gap between rice grains, the plumper rice grains fall into the grain storage bin 210, and the poorer rice grains fall into the broken rice secondary separation chamber 208. The annular hanging ear seat 209 is used to hang the rice bag. The side of the double separation bin 202 is provided with a switch door for taking out and putting in the broken rice secondary separation chamber 208 and the grain storage bin 210. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meanings of the above terms in this invention can be understood according to the specific circumstances. The above description is merely an example and illustration of the structure of this invention. Various modifications, additions, or similar substitutions made by those skilled in the art to the described specific embodiments, as long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, should fall within the protection scope of this invention.

Claims

1. A rice sieving machine for rice processing, characterized in that: The system includes a shell separation device (1), a screening device (2), a waste removal box (3), and a tipping elevator (4). The tipping elevator (4) is installed on one side of the waste removal box (3) and its bottom is connected to the waste removal box (3). The tipping elevator (4) and the screening device (2) are located on the feed end and discharge end of the shell separation device (1), respectively. A rice stalk hopper (302) and a waste removal fan (304) are provided above the waste removal box (3). The feed end of the waste removal fan (304) is connected to the bottom of the rice stalk hopper (302). One end of the waste removal fan (304) is provided with a type of material outlet (304). 5), used to discharge some weeds and silt; the upper part of the shell separation device (1) is the feeding end and its interior is arranged from top to bottom as a primary screening group (101), a secondary separation group (102), and a waste separation group (103). A tile screen separation group is provided between the secondary separation group (102) and the waste separation group (103); the primary screening group (101) is used to separate two types of materials, the secondary separation group (102) is used to separate rice husks, and the waste separation group (103) has two material outlets at the bottom for separating bran; the screening device (2) is used for fine separation of rice; The secondary separation unit (102) includes a rice milling machine (112), and the shell separation device (1) is equipped with a mounting frame (117). The rice milling machine (112) is located above the mounting frame (117). The upper wall of the mounting frame (117) is equipped with a double-layer tile screen (118). The double-layer tile screen (118) is a disc with gears on the edge. The mounting frame (117) is equipped with two tile screen drive motors (120). The drive end of the tile screen drive motor (120) meshes with the gear edge of the double-layer tile screen (118) through the gear mouth. The gear disks at the output ends of the two tile screen drive motors (120) rotate in opposite directions. The waste separation unit (103) includes a separation hopper (122) connected to the bottom of the mounting frame (117). The bottom of the shell separation device (1) is provided with a chaff storage compartment (126). The bottom of the separation hopper (122) is provided with a dustproof separation fan (123). The center of the bottom of the dustproof separation fan (123) is connected to an intermediate hopper (125). A ring of side discharge ports (124) is provided at the bottom edge of the dustproof separation fan (123). The side discharge ports (124) are connected to the chaff storage compartment (126). The bottom of the double-layer tile screen (118) is connected to an arc-shaped baffle plate (121). The arc surface of the arc-shaped baffle plate (121) faces downward. The maximum curved surface diameter of the arc-shaped baffle plate (121) is greater than the maximum circular diameter of the blade of the dust separation fan (123). The maximum circular diameter of the side discharge port (124) is greater than the maximum circular diameter of the blade of the dust separation fan (123). The shell separation device (1) has a side wall groove (127) on the side wall near the screening device (2), and a fish scale plate stone picker (201) is elastically connected inside the side wall groove (127). The screening device (2) also includes a double separation tank (202), with a separation motor (203) above the double separation tank (202). The output end of the separation motor (203) is connected to a rotating hopper (204) facing downwards. The bottom of the rotating hopper (204) is an inclined hopper. The top of the double separation tank (202) is provided with a feed inlet. The bottom end of the fish scale stone picker (201) is matched with the feed inlet of the double separation tank (202). The side of the higher end of the fish scale stone picker (201) is provided with a hanging ear plate that matches the side wall through groove (127). The bottom inclined surface of the rotating hopper (204) is provided with multiple straight separation plates. The trough (205) includes a series of material leakage troughs (206) at the bottom. The material leakage troughs (206) gradually increase in gap from the bottom of the inclined surface of the rotating hopper (204) to the top of the periphery of the rotating hopper (204). The bottom of the rotating hopper (204) is provided with a secondary rice separation chamber (208) and a grain storage tank (210). The side wall of the secondary rice separation chamber (208) is connected to a rotating interface (207) by a connecting rod. The rotating interface (207) is fixed inside the double separation tank (202). The grain storage tank (210) is located at the bottom of the double separation tank (202). The sieve can break off some of the longer and thinner rice straw impurities; the rice is thrown out by the centrifugal force provided by the linear separation tank and the separation motor. When the gap in the material leakage tank is larger than the gap between the rice grains, the plumper rice grains fall into the grain storage tank, while the poorer rice grains fall into the broken rice secondary separation chamber.

2. The rice sieving machine for rice processing according to claim 1, characterized in that: The impurity removal box (3) also includes a material working platform (301) and a louvered slide (303). The louvered slide (303) is connected between the outlet end of the rice beam hopper (302) and the inlet end of the impurity removal fan (304). The material working platform (301) is located on one side of the rice beam hopper (302) for placing rice. The rice outlet end of the impurity removal fan (304) is connected to the bottom of the tipping elevator (4). The impurity removal box (3) is provided with an extension closure (306) of the lifting chamber. The edge of the extension closure (306) of the lifting chamber is fitted with the outer shell of the impurity removal fan (304). The extension closure (306) of the lifting chamber connects the outlet end of the impurity removal fan (304) and the inlet end of the tipping elevator (4). The side of the impurity removal fan (304) is provided with an air vent pipe (307).

3. The rice sieving machine for rice processing according to claim 1, characterized in that: The tipping bucket elevator (4) includes a lifting box, and two fixed rollers (401) are provided inside the lifting box. One end of the lower fixed roller (401) extends out of the tipping bucket elevator (4) and is set on the transmission motor base (402). A belt drive conveyor is connected between the two fixed rollers (401). Multiple long trough tipping buckets (403) are evenly provided on the transmission conveyor. The top of the tipping bucket elevator (4) is provided with a material outlet on the side near the shell separation device (1). Above and below the material outlet of the tipping bucket elevator (4) are respectively a cover plate (404) and a guide plate (405). The guide plate (405) is an inclined plate and its bottom is fixed to the top of the primary screening group (101).

4. The rice sieving machine for rice processing according to claim 3, characterized in that: The primary screening group (101) includes a chute material hopper (107) and a vibrating screen (104). Multiple buffer springs (105) are connected between the two sides of the vibrating screen (104) and the two side walls of the chute material hopper (107). A vibrator (106) is provided at the bottom of the vibrating screen (104). The top of the shell separation device (1) is an inclined top surface. The inclination angle of the vibrating screen (104) is parallel to the inclined top surface of the shell separation device (1). A cover plate collection trough (109) is provided on the lower side of the inclined top surface of the shell separation device (1). The cover plate collection trough (109) is a semi-circular arc trough, and its central axis is located at the same position as the top edge of the shell separation device (1). The bottom of the inclined chute material hopper (107) is provided with a switch slot (110), and the inside of the switch slot (110) is provided with a rotatable material baffle (108). An external material switch (111) is connected to one side of the material baffle (108), and the external material switch (111) is located on the outer wall of the shell separation device (1). The bottom of the switch slot (110) is connected to the feed end of the secondary separation group (102).

5. The rice sieving machine for rice processing according to claim 1, characterized in that: The side of the shell separation device (1) is provided with a material outlet near the discharge end of the rice milling machine (112). A rice outlet guide plate (119) is provided between the material outlet and the rice milling machine (112). A rice milling machine (112) is provided at one end.

6. The rice sieving machine for rice processing according to claim 1, characterized in that: The bottom of the shell separation device (1) is equipped with a drive host (113), the output end of the drive host is connected to a double-layer transmission guide wheel (114), the drive end of the rice milling machine (112) is connected to a second double-layer transmission wheel (115), the double-layer transmission guide wheel (114) and the second double-layer transmission wheel (115) are connected by a belt drive, and the other layer of the double-layer transmission guide wheel (114) is connected to the transmission motor seat (402) at the bottom of the tipping bucket elevator (4) by a belt drive.

7. A rice sieving machine for rice processing according to claim 1, characterized in that: A stone inlet (128) is provided above the side wall through groove (127), and a stone outlet (129) is provided below the side wall through groove (127). A vibrator is fixedly connected to the fish scale plate stone picker (201).

8. A rice sieving machine for rice processing according to claim 7, characterized in that: The side wall of the double separation tank (202) is provided with an annular hanging ear seat (209).

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