Rice processing device capable of screening impurities

Abstract

The invention relates to a rice processing device, in particular to a rice processing device capable of screening impurities, which comprises an outer barrel body, a guide frame, a blanking barrel, a discharge pipe, a screening mechanism and a sorting mechanism, the top of the outer barrel body is connected with the guide frame, the blanking barrel is connected in the guide frame, the lower part of the blanking barrel extends into the outer barrel body, and the discharge pipe is arranged in the outer barrel body. Two discharging pipes are connected to the outer barrel, a screening mechanism used for screening out rice grains is arranged at the discharging barrel, and a sorting mechanism used for sorting the rice grains is arranged on the outer barrel. When rice is screened, air is injected through the air inlet pipe, then air is blown through the annular air blowing frame, rice grains are subjected to winnowing screening, screening is conducted according to the density and weight of the rice grains, the screening result is more accurate, and therefore the rice grains and impurities can be effectively separated.

Description

Technical Field

[0001] The invention relates to a rice processing device, in particular to a rice processing device for screening impurities. Background Art

[0002] Rice is a staple food crop in most regions of the world. Its processing typically involves multiple steps, including cleaning, hulling, milling, and final product finishing. During this process, rice grains are often mixed with impurities such as sand, straw, and weed seeds. This process also produces a certain amount of broken rice during milling, and a significant amount of husk may remain in the rice. Therefore, screening is necessary during rice processing to separate the rice from impurities.

[0003] At present, when screening rice, a vibrating screen is usually used to screen the rice. During screening, the rice is placed on the screen, and then the material is graded and screened through screens with different apertures, thereby effectively separating some impurities in the material and components such as broken rice that do not meet the finished product standards. However, since the working principle of the vibrating screen mainly depends on the difference in particle size, it is difficult to achieve efficient separation for impurities with a size similar to that of rice grains, such as pebbles and barnyard grass seeds, which affects the overall screening effect and makes it difficult to effectively separate impurities from rice grains. Summary of the Invention

[0004] In view of this, the present invention provides a rice processing device for screening impurities.

[0005] The technical solution of the present invention is: a rice processing device for impurity screening, comprising an outer cylinder, a guide frame, a discharge barrel, a discharge pipe, a screening mechanism and a sorting mechanism, wherein the top of the outer cylinder is connected to the guide frame, the inner part of the discharge barrel is connected to the guide frame, the lower part of the discharge barrel extends into the outer cylinder, two discharge pipes are connected to the outer cylinder, a screening mechanism for screening out rice grains is provided at the discharge barrel, and a sorting mechanism for sorting rice grains is provided on the outer cylinder.

[0006] In one embodiment, the screening mechanism includes a dual-axis motor, a conical throwing disc and an annular filter frame. The dual-axis motor is installed in the lower part of the discharge barrel, and one of the output shafts of the dual-axis motor is connected to the conical throwing disc. The conical throwing disc is located in the upper part of the discharge barrel. A discharge port is opened on the discharge barrel, and the edge of the conical throwing disc is aligned with the discharge port. The edge of the conical throwing disc is connected to the annular filter frame.

[0007] In one embodiment, the sorting mechanism includes a guide ring, an annular blowing frame and an air inlet pipe. The guide rings are connected to the upper and lower sides of the outer cylinder. A material guide groove is formed between the guide ring and the inner wall of the outer cylinder. The two material guide grooves are respectively aligned with the two discharge pipes. Two annular blowing frames are connected to the lower part of the discharge barrel. Two groups of air inlet holes are evenly spaced along the circumference at the lower part of the discharge barrel. The inner sides of the two groups of air inlet holes are respectively aligned with the two annular blowing frames, and the outer sides of the two groups of air inlet holes are respectively aligned with the upper parts of the two guide rings. The two annular blowing frames are connected to the air inlet pipe.

[0008] In one embodiment, a cleaning mechanism is also included, which includes a rotating ring, an outer gear ring, a scraper plate and a transmission assembly. Two rotating rings are rotatably connected to the upper part of the outer cylinder body, and the bottoms of the two rotating rings are connected to the scraper plates. The outer side of the rotating ring is connected to the outer gear ring, and the two scraper plates are respectively located in two material guide grooves. A transmission assembly is provided between the dual-axis motor and the outer cylinder body.

[0009] In one embodiment, the transmission assembly includes a rotating shaft, a belt drive group and a drive gear. The outer cylinder is connected to the rotating shaft for rotation outside the body. A belt drive group is connected between the bottom of the rotating shaft and the output shaft below the dual-axis motor. Two drive gears are connected to the upper part of the rotating shaft, and the two drive gears are respectively engaged with two outer gear rings.

[0010] In one embodiment, it also includes a controlled unloading mechanism, which includes a connecting frame, a conical unloading hopper, a unloading sleeve, a fixed disk, a movable disk, a magnet and an elastic member. The upper part of the unloading barrel is connected to the connecting frame, the conical unloading hopper is connected to the connecting frame, the bottom of the conical unloading hopper is connected to the unloading sleeve, the lower part of the unloading sleeve is provided with a discharge port, the discharge port connects the interior of the unloading sleeve with the interior of the conical unloading hopper, the bottom of the unloading sleeve is provided with a feeding port, the unloading sleeve is slidably connected with a movable disk, an elastic member is connected between the movable disk and the unloading sleeve, the middle of the top of the conical throwing plate is connected to a fixed disk, the eccentric position of the top of the fixed disk and the eccentric position of the bottom of the movable disk are embedded with magnets, and the N poles of the two magnets are opposite.

[0011] In one embodiment, an annular diverter grid is further included, and the top of the guide ring is connected to the annular diverter grid.

[0012] In one embodiment, a connecting ring and a scraper are further included. The bottom of the connecting frame is connected to the connecting ring. The bottom of the connecting ring is evenly spaced and connected to a plurality of scrapers. The scrapers are in contact with the inner wall of the annular filter frame.

[0013] Beneficial effects: 1. When screening rice, the present invention injects gas through the air inlet pipe and then blows air through the annular blowing frame to perform air separation and screening on the rice grains. The rice grains are screened by density and weight, and the screening results are more accurate, thereby effectively separating the rice grains from impurities.

[0014] 2. When adding rice grains, the present invention can first add the rice grains to the conical discharge hopper, and then the movable plate can be moved so that the rice grains intermittently pass through the discharge sleeve and are added to the conical spinning disc, thereby enabling intermittent sight-line addition of the rice grains to facilitate subsequent rice grain sorting. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0016] Figure 2 It is a cross-sectional view of the present invention.

[0017] Figure 3 This is a schematic diagram of the first structure of the cleaning mechanism of the present invention.

[0018] Figure 4 This is a second structural schematic diagram of the cleaning mechanism of the present invention.

[0019] Figure 5 It is a structural schematic diagram of the control blanking mechanism of the present invention.

[0020] Figure 6 For the present invention Figure 5 Enlarged view of part A in .

[0021] Figure 7 It is a structural schematic diagram of the annular diverter grid and the guide ring of the present invention.

[0022] Figure 8 It is a structural schematic diagram of the connecting frame, connecting ring and scraper of the present invention.

[0023] Marked in the figure: 1-outer cylinder, 2-guide frame, 3-discharge barrel, 4-discharge pipe, 51-dual-axis motor, 52-conical throwing plate, 53-annular filter frame, 61-guide ring, 62-annular blowing frame, 63-inlet pipe, 71-rotating ring, 72-outer gear ring, 73-scraper, 81-rotating shaft, 82-belt drive group, 83-drive gear, 91-connecting frame, 92-conical discharge hopper, 93-discharge sleeve, 94-fixed plate, 95-movable plate, 96-magnet, 97-elastic part, 10-annular diverter grid, 101-connecting ring, 102-scraper. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0025] A rice processing device for screening impurities, such as Figure 1-Figure 2 As shown, it includes an outer cylinder 1, a guide frame 2, a discharge barrel 3, a discharge pipe 4, a screening mechanism and a sorting mechanism. The top of the outer cylinder 1 is connected to the guide frame 2, and the guide frame 2 is connected to the discharge barrel 3. The lower part of the discharge barrel 3 extends into the outer cylinder 1. The lower right part of the outer cylinder 1 is connected to two upper and lower discharge pipes 4. The upper discharge pipe 4 is used to discharge incomplete rice, and the lower discharge pipe 4 is used to discharge complete rice. The discharge barrel 3 is provided with a screening mechanism for screening out rice grains, and the outer cylinder 1 is provided with a sorting mechanism for sorting rice grains.

[0026] like Figure 2 As shown, the screening mechanism includes a dual-axis motor 51, a conical throwing disc 52 and an annular filter frame 53. The dual-axis motor 51 is installed at the lower part of the discharge barrel 3. The two output shafts of the dual-axis motor 51 are arranged one above and one below. The output shaft above the dual-axis motor 51 is connected with a conical throwing disc 52. The conical throwing disc 52 is located at the upper part of the discharge barrel 3. A discharge port is provided in the middle part of the outer side of the discharge barrel 3. The edge of the conical throwing disc 52 is aligned with the discharge port. The edge of the conical throwing disc 52 is connected with an annular filter frame 53. The annular filter frame 53 is rotatably connected to the discharge barrel 3 and blocks the discharge port.

[0027] like Figure 2 As shown, the sorting mechanism includes a guide ring 61, an annular air blowing frame 62 and an air inlet pipe 63. The guide ring 61 is connected to the upper and lower sides of the outer cylinder 1. A material guide trough is formed between the guide ring 61 and the inner wall of the outer cylinder 1. The two material guide troughs are respectively aligned with the two discharge pipes 4. The lower part of the discharge cylinder 3 is connected to two annular air blowing frames 62. The lower part of the discharge cylinder 3 is provided with two groups of air inlet holes evenly spaced along the circumferential direction. The inner sides of the two groups of air inlet holes are respectively aligned with the two annular air blowing frames 62, and the outer sides of the two groups of air inlet holes are respectively aligned with the upper parts of the two guide rings 61, so that the air exhaust of the annular air blowing frame 62 can blow the rice grains to the material guide trough. The two annular air blowing frames 62 are connected to the air inlet pipe 63, and air can be injected into the annular air blowing frame 62 through the air inlet pipe 63.

[0028] When it is necessary to screen the rice for impurities, the present device can be used. When in use, the rice can be poured into the discharge barrel 3, and then the dual-axis motor 51 can be controlled to operate to drive the conical throwing plate 52 to rotate. The conical throwing plate 52 can throw the rice to the annular filter frame 53 when rotating, and the rice grains will pass through the annular filter frame 53 and the discharge port into the outer cylinder 1, and large impurities will be blocked by the annular filter frame 53. At this time, the two air inlet pipes 63 can be controlled to intake air, so that the annular blowing frame 62 blows out the gas. When controlling the air intake, the air flow injected into the upper annular blowing frame 62 is slower, and the air flow injected into the lower annular blowing frame 62 is faster. The upper annular blowing frame 62 The blown air flow can blow the incomplete rice grains in the rice grains to the inner wall of the outer cylinder 1, and finally slide to the upper material guide trough, and then be discharged through the upper discharge pipe 4. When the remaining rice grains fall, they will be aligned with the lower annular blowing frame 62. The lower annular blowing frame 62 blows air to blow the complete rice grains to the inner wall of the outer cylinder 1, and finally slide to the lower material guide trough, and then be discharged through the lower discharge pipe 4, thereby realizing the screening of the rice grains. The stones mixed in the rice grains are difficult to be blown away and will continue to fall to the bottom of the outer cylinder 1. In this way, the impurity screening of the rice grains can be realized, and during screening, screening is carried out by air flow, so that the rice grains and impurities can be effectively separated.

[0029] like Figure 3 and Figure 4 As shown, a cleaning mechanism is also included, which includes a rotating ring 71, an outer gear ring 72, a scraper plate 73 and a transmission assembly. The upper inner part of the outer cylinder 1 is rotatably connected to two rotating rings 71, and the bottoms of the two rotating rings 71 are connected to scraper plates 73. The two scraper plates 73 are respectively located in two guide grooves. When the rotating ring 71 rotates, it can drive the scraper plates 73 to rotate in the guide groove, thereby scraping the rice grains in the guide groove, scraping the rice grains to the discharge pipe 4, and then discharging them from the discharge pipe 4. A transmission assembly is provided between the dual-axis motor 51 and the outer cylinder 1, so that the operation of the dual-axis motor 51 can drive the outer gear ring 72 to rotate through the transmission assembly.

[0030] like Figure 3 and Figure 4 As shown, the transmission assembly includes a rotating shaft 81, a belt transmission group 82 and a driving gear 83. The rotating shaft 81 is rotatably connected to the left side of the outer cylinder 1. The belt transmission group 82 is connected between the bottom of the rotating shaft 81 and the output shaft below the dual-axis motor 51, so that the dual-axis motor 51 can drive the rotating shaft 81 to rotate through the belt transmission group 82. Two driving gears 83 are connected to the upper part of the rotating shaft 81, and the two driving gears 83 are respectively engaged with the two outer gear rings 72.

[0031] When the dual-axis motor 51 is in operation, it can drive the rotating shaft 81 to rotate through the belt transmission group 82. When the rotating shaft 81 rotates, it can drive the driving gear 83 to rotate. When the driving gear 83 rotates, it can drive the outer ring gear 72 to rotate. When the outer ring gear 72 rotates, it can drive the rotating ring 71 to rotate. When the rotating ring 71 rotates, it can drive the scraper plate 73 to rotate. When the scraper plate 73 rotates, it can scrape the rice grains at the guide trough, and help scrape the rice grains to the discharge pipe 4, and then discharge the rice grains through the discharge pipe 4 to prevent the rice grains from accumulating at the guide trough.

[0032] like Figure 5 and Figure 6 As shown, it also includes a controlled unloading mechanism, which includes a connecting frame 91, a conical unloading hopper 92, a unloading sleeve 93, a fixed plate 94, a movable plate 95, a magnet 96 and an elastic member 97. The upper part of the unloading barrel 3 is connected to the connecting frame 91, the conical unloading hopper 92 is connected to the connecting frame 91, the bottom of the conical unloading hopper 92 is connected to the unloading sleeve 93, and the lower part of the unloading sleeve 93 is provided with a discharge port, which connects the inside of the unloading sleeve 93 with the inside of the conical unloading hopper 92. The discharge sleeve 93 is connected to the feed sleeve 93, and a feeding port is provided at the bottom thereof. A movable disk 95 is slidably connected inside the discharge sleeve 93, and the movable disk 95 can block the discharge port. An elastic member 97 is connected between the movable disk 95 and the discharge sleeve 93, and the elastic member 97 is a connecting spring. A fixed disk 94 is connected to the middle of the top of the conical throwing plate 52, and magnets 96 are embedded in the eccentric position of the top of the fixed disk 94 and the eccentric position of the bottom of the movable disk 95, and the N poles of the two magnets 96 are opposite.

[0033] When adding rice grains, the rice grains can be added into the conical lower hopper 92, and when the conical throwing disc 52 rotates, the fixed disc 94 can be driven to rotate. When the fixed disc 94 rotates, it drives the magnet 96 to rotate. When the two magnets 96 are aligned, since the N poles of the two magnets 96 are relative, according to the repulsion of the same poles, the upper magnet 96 will be pushed to move upward, thereby driving the movable disc 95 to move upward, the elastic member 97 is compressed, and the movable disc 95 no longer blocks the discharge port after moving up. The rice grains in the conical lower hopper 92 will enter the discharge sleeve 93 through the discharge port, and finally be added to the top of the conical throwing disc 52 through the feeding port. When the lower magnet 96 rotates to separate from the upper magnet 96, the movable disc 95 is reset under the action of the elastic member 97 to block the discharge port again. This is repeated, and the rice grains can be added intermittently to avoid too much rice grains being added at one time, which hinders the screening work.

[0034] like Figure 7As shown, an annular diverter grille 10 is also included. The top of the guide ring 61 is connected to the annular diverter grille 10. When the rice grains fall, they will fall into the gaps in the annular diverter grille 10. When the air flow blows the rice grains to move, it will enter the annular diverter grille 10, so that the air flow can be more concentrated and avoid air flow dispersion.

[0035] like Figure 8 As shown, it also includes a connecting ring 101 and a scraper 102. The bottom of the connecting frame 91 is connected to the connecting ring 101, and a plurality of scrapers 102 are evenly spaced and connected to the bottom of the connecting ring 101. The scrapers 102 are in contact with the inner wall of the annular filter frame 53. When the annular filter frame 53 rotates, the scrapers 102 can scrape off impurities attached to the inner wall of the annular filter frame 53 to prevent impurities from adhering to the annular filter frame 53 and hindering the discharge work of the annular filter frame 53.

[0036] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A rice processing device for impurity screening, characterized in that: The invention comprises an outer cylinder (1), a guide frame (2), a discharge cylinder (3), a discharge pipe (4), a screening mechanism and a sorting mechanism, wherein the top of the outer cylinder (1) is connected to the guide frame (2), the inner portion of the guide frame (2) is connected to the discharge cylinder (3), the lower portion of the discharge cylinder (3) extends into the outer cylinder (1), two discharge pipes (4) are connected to the outer cylinder (1), a screening mechanism for screening out rice grains is provided at the discharge cylinder (3), and a sorting mechanism for sorting rice grains is provided on the outer cylinder (1).

2. The rice processing device for screening impurities according to claim 1, characterized in that: The screening mechanism comprises a double-shaft motor (51), a conical throwing disc (52) and an annular filter frame (53). The double-shaft motor (51) is installed in the lower part of the discharge barrel (3). One of the output shafts of the double-shaft motor (51) is connected to the conical throwing disc (52). The conical throwing disc (52) is located in the upper part of the discharge barrel (3). A discharge port is provided on the discharge barrel (3). The edge of the conical throwing disc (52) is aligned with the discharge port. The edge of the conical throwing disc (52) is connected to the annular filter frame (53).

3. The rice processing device for screening impurities according to claim 2, characterized in that: The sorting mechanism includes a guide ring (61), an annular air blowing frame (62) and an air inlet pipe (63). The guide ring (61) is connected to the upper and lower sides of the outer cylinder (1). A material guide groove is formed between the guide ring (61) and the inner wall of the outer cylinder (1). The two material guide grooves are respectively aligned with the two discharge pipes (4). The lower part of the discharge cylinder (3) is connected to two annular air blowing frames (62). The lower part of the discharge cylinder (3) is evenly spaced along the circumference and provided with two groups of air inlet holes. The inner sides of the two groups of air inlet holes are respectively aligned with the two annular air blowing frames (62), and the outer sides of the two groups of air inlet holes are respectively aligned with the upper parts of the two guide rings (61). The two annular air blowing frames (62) are both connected with the air inlet pipe (63).

4. The rice processing device for screening impurities according to claim 3, characterized in that: The invention also includes a cleaning mechanism, which includes a rotating ring (71), an outer gear ring (72), a scraper plate (73) and a transmission assembly. The upper inner portion of the outer cylinder (1) is rotatably connected to two rotating rings (71), the outer side of the rotating ring (71) is connected to the outer gear ring (72), and the bottoms of the two rotating rings (71) are connected to scraper plates (73). The two scraper plates (73) are respectively located in two guide grooves. A transmission assembly is provided between the dual-axis motor (51) and the outer cylinder (1).

5. The rice processing device for screening impurities according to claim 4, characterized in that: The transmission assembly includes a rotating shaft (81), a belt transmission group (82) and a driving gear (83). The outer cylinder (1) is rotatably connected to the rotating shaft (81). The belt transmission group (82) is connected between the bottom of the rotating shaft (81) and the output shaft below the dual-axis motor (51). The upper part of the rotating shaft (81) is connected to two driving gears (83). The two driving gears (83) are respectively engaged with the two outer gear rings (72).

6. The rice processing device for screening impurities according to claim 5, characterized in that: The invention also includes a controlled discharge mechanism, which includes a connecting frame (91), a conical discharge hopper (92), a discharge sleeve (93), a fixed plate (94), a movable plate (95), a magnet (96) and an elastic member (97). The upper part of the discharge sleeve (3) is connected to the connecting frame (91), the conical discharge hopper (92) is connected to the connecting frame (91), the bottom of the conical discharge hopper (92) is connected to the discharge sleeve (93), and the lower part of the discharge sleeve (93) is provided with a discharge port, which can discharge the discharge sleeve. The interior of (93) is communicated with the interior of the conical discharge hopper (92), a feeding port is provided at the bottom of the discharge sleeve (93), a movable disk (95) is slidably connected in the discharge sleeve (93), an elastic member (97) is connected between the movable disk (95) and the discharge sleeve (93), a fixed disk (94) is connected to the middle of the top of the conical throwing plate (52), and magnets (96) are embedded in the eccentric position of the top of the fixed disk (94) and the eccentric position of the bottom of the movable disk (95), and the N poles of the two magnets (96) are opposite.

7. The rice processing device for screening impurities according to claim 6, characterized in that: It also includes an annular diversion grid (10), and the top of the guide ring (61) is connected to the annular diversion grid (10).

8. The rice processing device for screening impurities according to claim 7, characterized in that: It also includes a connecting ring (101) and a scraper (102), wherein the bottom of the connecting frame (91) is connected to the connecting ring (101), and the bottom of the connecting ring (101) is evenly spaced and connected to a plurality of scrapers (102), and the scrapers (102) are in contact with the inner wall of the annular filter frame (53).

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