Screen cleaning device for selenium-enriched millet processing

Abstract

The invention discloses a screen cleaning device for selenium-rich millet processing, and relates to the technical field of millet processing, the screen cleaning device comprises a cleaning and screening mechanism and a quantitative conveying box mounted on one side of the top of the cleaning and screening mechanism, a drying and screening mechanism is arranged at the bottom of the cleaning and screening mechanism, and a drying air box is arranged on the outer side of the drying and screening mechanism; the cleaning and screening mechanism comprises a supporting frame, a screening conveying pipe is fixedly installed at the top of the supporting frame, a feeding hopper is fixedly installed on one side of the screening conveying pipe, a rotating motor is fixedly installed on the side, close to the interior of the feeding hopper, of the screening conveying pipe, and the output end of the rotating motor is fixedly connected with a rotating main bevel gear; millet is preliminarily stirred through the stirring rod, sand grains with small grain sizes in the millet are screened out through the filtering roller, meanwhile, the spiral conveying blade is driven by the stirring shaft to rotate, and the conveying function of the millet can be achieved while stirring is conducted.

Description

Technical Field

[0001] The invention relates to the technical field of millet processing, in particular to a screening device for processing selenium-enriched millet. Background Art

[0002] Publication No. CN 210279779 U discloses a rice processing cleaning device with good screening effect. The collecting shells are provided with two and are respectively arranged on the conveying trough and the upper part of the working hole. After the air pump is started, it can absorb lighter and smaller debris such as dust, thereby increasing the screening effect during the screening process. The connecting pipe adopts a PVC plastic hose and is respectively connected with the processing and collecting box and the collecting shell. When absorbing lighter and smaller debris such as dust, it is more convenient to store and use it more reasonably. The processing and collecting box and the air pump are connected to each other. The connection between the processing and collecting box and the air pump is provided with an activated carbon net. When in use, the suction work is reasonably performed, and the lighter and smaller debris such as dust are also reasonably absorbed. The sleeve adjustment plate seals the right side of the placement cavity. After the adjustment of the sleeve adjustment plate is completed, the rice is reasonably transported, thereby being reasonably used. However, the patent still has the following problems in actual use: When the rice processing cleaning device with good screening effect is screening rice, dust is sucked by an air pump, but the suction force of the air pump cannot be accurately controlled. When the suction force is small, the dust cannot be accurately absorbed. When the suction force is large, the rice will be sucked away together, thereby affecting the cleaning effect of the rice. At the same time, the existing cleaning device is not provided with a related cleaning structure to clean the millet, resulting in a poor cleaning effect of the millet, and the dust and sand in the millet cannot be screened out.

[0003] A screening device for processing selenium-enriched millet is proposed to solve the above-mentioned problems. Summary of the invention

[0004] The purpose of the present invention is to provide a cleaning and screening device for processing selenium-rich millet, so as to solve the problem that the cleaning and screening device for processing rice with good screening effect proposed in the above-mentioned background technology absorbs dust through an air pump when screening rice, but the suction force of the air pump cannot be accurately controlled. When the suction force is small, the dust cannot be accurately absorbed. When the suction force is large, the rice will be sucked away together, thereby affecting the cleaning and screening effect of the rice. At the same time, the existing cleaning and screening device is not provided with a related cleaning structure to clean the millet, resulting in a poor cleaning effect of the millet and the problem that the dust and sand in the millet cannot be screened out.

[0005] To achieve the above object, the present invention provides the following technical solutions: a screening device for processing selenium-rich millet, comprising a cleaning and screening mechanism, and a quantitative conveying box installed on one side of the top of the cleaning and screening mechanism; A drying screening mechanism is provided at the bottom of the cleaning and screening mechanism, and a drying bellows is provided on the outside of the drying and screening mechanism; Also includes: The cleaning and screening mechanism comprises a support frame, a screening conveying pipe is fixedly installed on the top of the support frame, and a feed hopper is fixedly installed on one side of the screening conveying pipe; Wherein, a rotating motor is fixedly installed on the inner side of the screening conveying pipe close to the feed hopper, and the output end of the rotating motor is fixedly connected to the rotating main bevel gear; Wherein, one side of the rotating main bevel gear is meshedly connected with a rotating bevel gear ring, and the outer side of the rotating bevel gear ring is meshedly connected with a plurality of rotating slave bevel gears; A filter drum is fixedly connected to the outer side of the rotating bevel gear ring, and a rotating bearing is rotatably connected to the outer side of the filter drum. The filter drum is rotatably connected to a screening conveying pipe through the rotating bearing. A stirring motor is fixedly installed at the center position of the screening conveying pipe near the feed hopper side, and a stirring shaft is fixedly connected to the output end of the stirring motor.

[0006] Preferably, the stirring shaft is rotatably connected to the screening and conveying pipe, a plurality of stirring rods are fixedly installed on the outer side of the stirring shaft, a spiral conveying blade is fixedly installed on the side of the stirring shaft close to the stirring rod, the spiral conveying blade is fit-connected to the inner wall of the filter drum, a through hole is opened inside the spiral conveying blade, and a discharge pipe is fixedly installed on the end of the screening and conveying pipe away from the feed hopper.

[0007] Preferably, the quantitative conveying box is fixedly installed at the end of the discharge pipe, a slope is fixedly installed on one side of the bottom of the quantitative conveying box, a scattering rake is fixedly installed on the side of the quantitative conveying box close to the slope, a rotating connecting shaft is rotatably connected to the inner center position of the quantitative conveying box, and a plurality of quantitative rotating mesh plates are fixedly installed on the outer side of the rotating connecting shaft.

[0008] Preferably, a rotating cam is fixedly connected to the outer side of the rotating connecting shaft, a first fixed bracket is fixedly installed on the outer side of the quantitative delivery box, a telescopic sliding rod is slidably connected to the inside of the first fixed bracket, a first connecting block is fixedly connected to the end of the telescopic sliding rod, a plurality of telescopic springs are fixedly installed on one side of the first connecting block, the telescopic springs are fixedly connected to the first fixed bracket, and the first connecting block is fit-connected to the rotating cam.

[0009] Preferably, a cleaning spray box is fixedly installed on one side of the quantitative delivery box, a connecting water pipe is fixedly installed on the top of the cleaning spray box, a plurality of water outlet holes are opened on the inner side of the bottom of the cleaning spray box, and a connecting baffle is fixedly installed on the end of the telescopic sliding rod away from the first connecting block, and the connecting baffle is slidably connected to the cleaning spray box.

[0010] Preferably, a circulating water pump is provided on the outer side of the bottom of the support frame, a filter tube is fixedly installed on one side of the bottom of the circulating water pump, a first water outlet pipe is fixedly connected to the top of the circulating water pump, a second water outlet pipe is fixedly connected to the top of the first water outlet pipe, a cleaning nozzle is fixedly installed on the end of the second water outlet pipe, and the cleaning nozzle is fixedly installed on the inner side of the top of the screening and conveying pipe.

[0011] Preferably, the drying and screening mechanism includes a sewage collecting box, a millet collecting box is arranged on one side of the sewage collecting box, a drainage hole is opened on the front of the sewage collecting box, a second fixed bracket is symmetrically installed on the top of the sewage collecting box, the sewage collecting box is fixedly installed on the bottom of the support frame, the top of the second fixed bracket is fixedly connected with a conveying bracket, a conveying motor is fixedly installed on one side of the conveying bracket, the output end of the conveying motor is fixedly connected with a first sprocket transmission assembly, one side of the first sprocket transmission assembly is fixedly connected with a second sprocket transmission assembly, the inner sides of the first sprocket transmission assembly and the second sprocket transmission assembly are fixedly connected with conveying rollers, the outer side of the conveying roller is transmission-connected with a perforated conveyor belt, rubber side panels are symmetrically installed on both sides of the perforated conveyor belt, and a number of connecting plates are fixedly connected between the two rubber side panels.

[0012] Preferably, a fixed connecting block is symmetrically installed on one side of the conveying bracket, the drying bellows is fixedly installed on the top of the fixed connecting block, a plurality of drying connecting pipes are fixedly installed on the top of the drying bellows, a drying air duct is arranged at the end of the drying connecting pipe, a screening connecting pipe is fixedly installed on the bottom of the drying bellows, a screening air duct is arranged at the end of the screening connecting pipe, and mounting rings are arranged between the drying connecting pipe and the drying air duct and between the screening connecting pipe and the screening air duct.

[0013] Compared with the prior art, the invention has the following beneficial effects: the screening device for processing selenium-rich millet performs preliminary stirring of the millet through a stirring rod, so that the sand particles with smaller particle sizes in the millet are screened out through a filter drum, and the stirring shaft is used to drive the spiral conveying blade to rotate, so that the millet can be transported while stirring. By setting a drying and screening mechanism, not only can the sewage after cleaning be recycled by a sewage collection box, but also the conveying motor can be used to realize the rotation of the conveyor belt with holes, so that the millet can be transported. The specific contents are as follows: 1. By setting up the cleaning and screening mechanism, not only can the rotating motor be used to drive the rotating main bevel gear to rotate, but also the principle of bevel gear meshing connection between the rotating main bevel gear, the rotating bevel gear ring and the rotating slave bevel gear can be used to realize the rotation of the filter drum, thereby realizing the preliminary mixing and screening of the millet. At the same time, the stirring motor is started to drive the stirring shaft and the stirring rod to rotate, and the millet is preliminarily stirred by the stirring rod, so that the sand particles with smaller particle size in the millet are screened out through the filter drum. At the same time, the stirring shaft is used to drive the spiral conveying blade to rotate, and the conveying function of the millet can be realized while stirring, so that the millet enters the quantitative conveying box through the discharge pipe at the top, and the through hole inside the spiral conveying blade can realize the secondary screening of the millet, so as to avoid the accumulation between the millet and the phenomenon of insufficient screening of the sand particles and the millet. The water in the sewage collection tank is filtered by the circulating water pump through the filter pipe, and then transported to the cleaning nozzle through the first outlet pipe and the second outlet pipe. The millet is initially cleaned by a shower method, and the sand and dust in the millet are fully cleaned by a stirring method. The conveyed millet is accumulated inside the quantitative conveying box through a slope. When the millet is accumulated to a certain extent, the quantitative rotating mesh plate is squeezed, so that the quantitative rotating mesh plate rotates under the action of the rotating connecting shaft. The accumulated millet is broken up by a scattering rake and falls into the perforated conveyor belt at the bottom. When the rotating connecting shaft rotates, the rotating cam at the end is driven to rotate, and under the action of the telescopic spring, the rotating cam drives the first connecting block and the telescopic sliding rod to reciprocate inside the first fixed bracket, and at the same time, the telescopic sliding rod drives the connecting baffle to slide inside the cleaning spray box. The water output of the water outlet can be controlled by changing the number of blocked water outlet holes. The water output of the water outlet can be increased according to the speed of rotation of the quantitative rotating mesh plate, so that the millet on the perforated conveyor belt is secondary cleaned, and the millet cleaning effect is improved. 2. By setting up the drying and screening mechanism, not only can the sewage collection box be used to recycle the cleaned sewage, but also the conveying motor is used to drive the first sprocket transmission assembly and the second sprocket transmission assembly to rotate, so that the first sprocket transmission assembly and the second sprocket transmission assembly drive the conveying roller to rotate, and the characteristics of the transmission connection between the conveying roller and the perforated conveyor belt are used to realize the rotation of the perforated conveyor belt, so as to perform the conveying function of millet, and the quantitative conveying of millet can be realized by controlling the rotation speed of the perforated conveyor belt and cooperating with the quantitative conveying box on the top. Starting the drying bellows can quickly dry the millet through the drying connecting pipe and the drying air duct on the top, and at the same time, when the millet is transported to the highest point and falls, the millet is blown into the millet collection box for collection through the screening connecting pipe and the screening air duct, while the larger sand particles cannot be blown by the screening air duct due to their large weight, and thus fall into the sewage collection box at the bottom, thereby realizing the screening function of millet. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the cleaning and screening mechanism of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the filter drum in the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the stirring rod and the spiral conveying blade in the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the quantitative delivery box section in the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the cleaning spray box in the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the cleaning nozzle in the present invention; Figure 8 It is a three-dimensional structural schematic diagram of the drying and screening mechanism in the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the conveyor belt with holes in the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the drying air duct and the screening air duct in the present invention.

[0015] In the figure: 1, cleaning and screening mechanism; 101, support frame; 102, screening and conveying pipe; 103, feeding hopper; 104, rotating motor; 105, rotating main bevel gear; 106, rotating bevel gear ring; 107, rotating slave bevel gear; 108, filter drum; 109, rotating bearing; 110, stirring motor; 111, stirring shaft; 112, stirring rod; 113, spiral conveying blade; 114, through hole; 115, discharge pipe; 116, quantitative conveying box; 117, ramp; 118, scattering rake; 119, rotating connecting shaft; 120, quantitative rotating screen plate; 121, rotating cam; 122, first fixed bracket; 123, telescopic sliding rod; 124, telescopic spring; 125, first connecting block; 126, cleaning spray box; 127, connecting Water connecting pipe; 128, water outlet; 129, connecting baffle; 130, circulating water pump; 131, filter tube; 132, first water outlet pipe; 133, second water outlet pipe; 134, cleaning nozzle; 2, drying and screening mechanism; 201, sewage collection box; 202, millet collection box; 203, drainage hole; 204, second fixed bracket; 205, conveying bracket; 206, conveying motor; 207, first sprocket transmission assembly; 208, second sprocket transmission assembly; 209, conveying roller; 210, conveyor belt with holes; 211, rubber side plate; 212, connecting plate; 213, fixed connecting block; 214, drying bellows; 215, drying connecting pipe; 216, drying air duct; 217, screening connecting pipe; 218, screening air duct; 219, mounting ring. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-10The present invention provides a technical solution: a screening device for processing selenium-rich millet, comprising a cleaning and screening mechanism 1, and a quantitative conveying box 116 installed on one side of the top of the cleaning and screening mechanism 1, a drying and screening mechanism 2 is arranged at the bottom of the cleaning and screening mechanism 1, and a drying air box 214 is arranged on the outer side of the drying and screening mechanism 2, the cleaning and screening mechanism 1 comprises a support frame 101, a screening and conveying pipe 102 is fixedly installed on the top of the support frame 101, a feeding hopper 103 is fixedly installed on one side of the screening and conveying pipe 102, wherein a rotating motor 104 is fixedly installed on one side of the inner side of the screening and conveying pipe 102 close to the feeding hopper 103, and the rotating motor 104 The output end is fixedly connected with a rotating main bevel gear 105, wherein one side of the rotating main bevel gear 105 is meshedly connected with a rotating bevel gear ring 106, and the outer side of the rotating bevel gear ring 106 is meshedly connected with a plurality of rotating slave bevel gears 107, and the outer side of the rotating bevel gear ring 106 is fixedly connected with a filter drum 108, and the outer side of the filter drum 108 is rotatably connected with a rotating bearing 109, and the filter drum 108 is rotatably connected with the screening conveying pipe 102 through the rotating bearing 109, and a stirring motor 110 is fixedly installed at the center position of the screening conveying pipe 102 near the feed hopper 103, and a stirring shaft 111 is fixedly connected to the output end of the stirring motor 110, The stirring shaft 111 is rotatably connected with the screening conveying pipe 102, and a plurality of stirring rods 112 are fixedly installed on the outer side of the stirring shaft 111. A spiral conveying blade 113 is fixedly installed on the side of the stirring shaft 111 close to the stirring rod 112. The spiral conveying blade 113 is fitted and connected with the inner wall of the filter drum 108. A through hole 114 is opened inside the spiral conveying blade 113. A discharge pipe 115 is fixedly installed at one end of the screening conveying pipe 102 away from the feed hopper 103, and a quantitative conveying box 116 is fixedly installed at the end of the discharge pipe 115. By setting up the cleaning and screening mechanism 1, not only can the rotating motor 104 be used to drive the rotating main bevel gear 105 to rotate, but also the cleaning and screening mechanism 1 can be used to clean the screen 1. By using the principle of bevel gear meshing connection among rotating main bevel gear 105, rotating bevel gear ring 106 and rotating slave bevel gear 107, the filter drum 108 is rotated to achieve preliminary mixing and screening of millet. At the same time, the stirring motor 110 is started to drive the stirring shaft 111 and the stirring rod 112 to rotate. The millet is preliminarily stirred by the stirring rod 112, so that the sand particles with smaller particle size in the millet are screened out through the filter drum 108. At the same time, the stirring shaft 111 is used to drive the spiral conveying blade 113 to rotate, so that the conveying function of millet can be realized while stirring, so that the millet enters the quantitative conveying box 116 through the discharge pipe 115 on the top.

[0018] A slope 117 is fixedly installed on one side of the bottom of the quantitative delivery box 116, and a scattering rake 118 is fixedly installed on one side of the quantitative delivery box 116 close to the slope 117. A rotating connecting shaft 119 is rotatably connected to the center of the quantitative delivery box 116, and a plurality of quantitative rotating mesh plates 120 are fixedly installed on the outer side of the rotating connecting shaft 119. The through hole 114 inside the spiral delivery blade 113 can realize the secondary screening of millet, avoid the accumulation of millet, and cause the phenomenon of insufficient screening of sand and millet. The water in the sewage collection tank 201 is passed through the filter pipe 119 by the circulating water pump 130. After being filtered, the millet is transported to the cleaning nozzle 134 through the first water outlet pipe 132 and the second water outlet pipe 133, and the millet is initially cleaned by spraying, and the sand and dust in the millet are fully cleaned by stirring. The transported millet is accumulated inside the quantitative conveying box 116 through the slope 117. When the millet is accumulated to a certain extent, it will squeeze the quantitative rotating mesh plate 120, so that the quantitative rotating mesh plate 120 rotates under the action of the rotating connecting shaft 119, and the accumulated millet is broken up by the scattering rake 118 and falls into the perforated conveyor belt 210 at the bottom.

[0019] The outer side of the rotating connecting shaft 119 is fixedly connected with a rotating cam 121, the outer side of the quantitative delivery box 116 is fixedly installed with a first fixed bracket 122, the interior of the first fixed bracket 122 is slidably connected with a telescopic sliding rod 123, the end of the telescopic sliding rod 123 is fixedly connected with a first connecting block 125, one side of the first connecting block 125 is fixedly installed with a plurality of telescopic springs 124, the telescopic springs 124 are fixedly connected to the first fixed bracket 122, and the first connecting block 125 is fixedly connected with the rotating cam 121. The quantitative delivery box 116 is fixedly connected to one side thereof, a cleaning spray box 126 is fixedly installed, a connecting water pipe 127 is fixedly installed on the top of the cleaning spray box 126, a plurality of water outlet holes 128 are opened on the inner side of the bottom of the cleaning spray box 126, a connecting baffle 129 is fixedly installed on the end of the telescopic sliding rod 123 away from the first connecting block 125, and the connecting baffle 129 is slidably connected to the cleaning spray box 126, a circulating water pump 130 is arranged on the outer side of the bottom of the supporting frame 101, and the bottom of the circulating water pump 130 is provided with a plurality of water outlet holes 128. A filter tube 131 is fixedly installed on one side of the part, a first water outlet pipe 132 is fixedly connected to the top of the circulating water pump 130, a second water outlet pipe 133 is fixedly connected to the top of the first water outlet pipe 132, a cleaning nozzle 134 is fixedly installed on the end of the second water outlet pipe 133, and the cleaning nozzle 134 is fixedly installed on the top inner side of the screening conveying pipe 102. When the rotating connecting shaft 119 rotates, the rotating cam 121 at the end is driven to rotate, and under the action of the telescopic spring 124, the rotating cam 121 drives the first connecting block 125 and the telescopic sliding rod 123 to reciprocate inside the first fixed bracket 122, and the telescopic sliding rod 123 drives the connecting baffle 129 to slide inside the cleaning spray box 126. The water output of the water outlet hole 128 can be controlled by changing the number of blocked water outlet holes 128. The water output of the water outlet hole 128 can be increased according to the speed of rotation of the quantitative rotating mesh plate 120, so as to facilitate the secondary cleaning of the millet on the perforated conveyor belt 210 and improve the millet cleaning effect.

[0020] The drying and screening mechanism 2 includes a sewage collection box 201, a millet collection box 202 is arranged on one side of the sewage collection box 201, a drainage hole 203 is opened on the front of the sewage collection box 201, a second fixed bracket 204 is symmetrically installed on the top of the sewage collection box 201, the sewage collection box 201 is fixedly installed on the bottom of the support frame 101, a conveying bracket 205 is fixedly connected to the top of the second fixed bracket 204, a conveying motor 206 is fixedly installed on one side of the conveying bracket 205, an output end of the conveying motor 206 is fixedly connected to a first sprocket transmission assembly 207, a side of the first sprocket transmission assembly 207 is fixedly connected to a second sprocket transmission assembly 208, the inner sides of the first sprocket transmission assembly 207 and the second sprocket transmission assembly 208 are fixedly connected to a conveying roller 209, and the outer side of the conveying roller 209 is fixedly connected to the conveying roller 209. A perforated conveyor belt 210 is connected, and rubber side plates 211 are symmetrically installed on both sides of the perforated conveyor belt 210, and a number of connecting plates 212 are fixedly connected between the two rubber side plates 211. By setting the drying and screening mechanism 2, not only can the sewage collection box 201 be used to recycle the cleaned sewage, but also the conveying motor 206 is used to drive the first sprocket transmission assembly 207 and the second sprocket transmission assembly 208 to rotate, so that the first sprocket transmission assembly 207 and the second sprocket transmission assembly 208 drive the conveying roller 209 to rotate, and the transmission connection between the conveying roller 209 and the perforated conveyor belt 210 is used to realize the rotation of the perforated conveyor belt 210, and the conveying function of millet can be performed. By controlling the rotation speed of the perforated conveyor belt 210 and cooperating with the quantitative conveying box 116 on the top, the quantitative conveying of millet can be realized.

[0021] A fixed connection block 213 is symmetrically installed on one side of the conveying bracket 205, a drying air box 214 is fixedly installed on the top of the fixed connection block 213, a plurality of drying connection pipes 215 are fixedly installed on the top of the drying air box 214, a drying air duct 216 is arranged at the end of the drying connection pipe 215, a screening connection pipe 217 is fixedly installed at the bottom of the drying air box 214, a screening air duct 218 is arranged at the end of the screening connection pipe 217, and a screen air duct 218 is arranged between the drying connection pipe 215 and the drying air duct 216 and between the screening connection pipe 217 and the screen air duct 218. Mounting rings 219 are provided between the air selection ducts 218. Starting the drying bellows 214 can not only quickly dry the millet through the drying connecting pipe 215 and the drying air duct 216 at the top, but also, when the millet is transported to the highest point and falls, the millet is blown into the millet collecting box 202 for collection through the screening connecting pipe 217 and the screening air duct 218. However, larger sand particles cannot be blown by the screening air duct 218 due to their heavy weight, and thus fall into the sewage collection box 201 at the bottom, thereby realizing the screening function of millet.

[0022] Working principle: Before using this kind of selenium-rich millet processing cleaning device, it is necessary to check the overall condition of the device to ensure that it can work normally. Figure 1 - Fig.10 As shown, first, the millet to be screened is put into the feed hopper 103, and the rotating motor 104 is started to drive the rotating main bevel gear 105 to rotate. The rotating main bevel gear 105, the rotating bevel gear ring 106 and the rotating slave bevel gear 107 are connected by bevel gears to realize the rotation of the filter drum 108, thereby realizing the preliminary mixing and screening of the millet. At the same time, the stirring motor 110 is started to drive the stirring shaft 111 and the stirring rod 112 to rotate, and the millet is preliminarily stirred by the stirring rod 112 to make the particles in the millet Sand particles with smaller diameters are screened out by the filter drum 108, and the stirring shaft 111 is used to drive the spiral conveying blade 113 to rotate, which can realize the conveying function of the millet while stirring, so that the millet enters the quantitative conveying box 116 through the discharge pipe 115 on the top, and at the same time, the circulating water pump 130 is started to filter the water in the sewage collection tank 201 through the filter pipe 131, and then transported to the cleaning nozzle 134 through the first water outlet pipe 132 and the second water outlet pipe 133, and the millet is preliminarily cleaned by spraying.

[0023] Secondly, the through hole 114 inside the spiral conveying blade 113 can be used to realize the secondary screening of millet, so as to avoid the accumulation of millet and the insufficient screening of sand and millet. The conveyed millet is accumulated inside the quantitative conveying box 116 through the slope 117. When the millet is accumulated to a certain extent, it will squeeze the quantitative rotating mesh plate 120, so that the quantitative rotating mesh plate 120 rotates under the action of the rotating connecting shaft 119. The accumulated millet is broken up by the scattering rake 118 and falls into the perforated conveyor belt 210 at the bottom. When the rotating connecting shaft 119 rotates, it will drive the rotating cam at the end to rotate. The wheel 121 rotates, and under the action of the telescopic spring 124, the rotating cam 121 drives the first connecting block 125 and the telescopic sliding rod 123 to reciprocate inside the first fixed bracket 122, and at the same time the telescopic sliding rod 123 drives the connecting baffle 129 to slide inside the cleaning spray box 126. The water output of the water outlet 128 can be controlled by changing the number of blocked water outlet holes 128. The water output of the water outlet 128 can be increased according to the speed of rotation of the quantitative rotating mesh plate 120, so as to facilitate the secondary cleaning of the millet on the perforated conveyor belt 210 and improve the millet cleaning effect.

[0024] Finally, the sewage collection box 201 is used to recycle the washed sewage, and the conveying motor 206 is used to drive the first sprocket transmission assembly 207 and the second sprocket transmission assembly 208 to rotate, so that the first sprocket transmission assembly 207 and the second sprocket transmission assembly 208 drive the conveying roller 209 to rotate, and the characteristic of the transmission connection between the conveying roller 209 and the perforated conveyor belt 210 is used to realize the rotation of the perforated conveyor belt 210, so as to realize the conveying function of millet, and the quantitative conveying of millet is realized by controlling the rotation speed of the perforated conveyor belt 210 and cooperating with the quantitative conveying box 116 at the top, and starting the drying bellows 214 can not only quickly dry the millet through the drying connecting pipe 215 and the drying air duct 216 at the top, but also when the millet is transported to the highest point and falls, the millet is blown into the millet collection box 202 for collection through the screening connecting pipe 217 and the screening air duct 218, while the larger sand particles cannot be blown by the screening air duct 218 due to their large weight, and thus fall into the sewage collection box 201 at the bottom, thereby realizing the screening function of millet.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A screening device for processing selenium-rich millet, comprising a cleaning and screening mechanism (1), and a quantitative conveying box (116) installed on one side of the top of the cleaning and screening mechanism (1); A drying and screening mechanism (2) is provided at the bottom of the cleaning and screening mechanism (1), and a drying bellows (214) is provided on the outside of the drying and screening mechanism (2); It is characterized in that Also includes: The cleaning and screening mechanism (1) comprises a support frame (101), a screening conveying pipe (102) is fixedly mounted on the top of the support frame (101), and a feed hopper (103) is fixedly mounted on one side of the screening conveying pipe (102); A rotating motor (104) is fixedly installed on one side of the interior of the screening conveying pipe (102) close to the feed hopper (103), and a rotating main bevel gear (105) is fixedly connected to the output end of the rotating motor (104); Wherein, one side of the rotating main bevel gear (105) is meshedly connected with a rotating bevel gear ring (106), and the outer side of the rotating bevel gear ring (106) is meshedly connected with a plurality of rotating slave bevel gears (107); A filter drum (108) is fixedly connected to the outer side of the rotating bevel gear ring (106), a rotating bearing (109) is rotatably connected to the outer side of the filter drum (108), the filter drum (108) is rotatably connected to the screening conveying pipe (102) via the rotating bearing (109), a stirring motor (110) is fixedly mounted at the center of a side of the screening conveying pipe (102) close to the feed hopper (103), and a stirring shaft (111) is fixedly connected to the output end of the stirring motor (110).

2. A screening device for processing selenium-enriched millet according to claim 1, characterized in that: The stirring shaft (111) is rotatably connected to the screening and conveying pipe (102); a plurality of stirring rods (112) are fixedly mounted on the outer side of the stirring shaft (111); a spiral conveying blade (113) is fixedly mounted on a side of the stirring shaft (111) close to the stirring rod (112); the spiral conveying blade (113) is fittedly connected to the inner wall of the filter drum (108); a through hole (114) is formed inside the spiral conveying blade (113); and a discharge pipe (115) is fixedly mounted on one end of the screening and conveying pipe (102) away from the feed hopper (103).

3. A screening device for processing selenium-enriched millet according to claim 2, characterized in that: The quantitative conveying box (116) is fixedly mounted at the end of the discharge pipe (115); a slope (117) is fixedly mounted on one side of the bottom of the quantitative conveying box (116); a scattering rake (118) is fixedly mounted on one side of the quantitative conveying box (116) close to the slope (117); a rotating connecting shaft (119) is rotatably connected to the center position of the interior of the quantitative conveying box (116); and a plurality of quantitative rotating mesh plates (120) are fixedly mounted on the outer side of the rotating connecting shaft (119).

4. A screening device for processing selenium-enriched millet according to claim 3, characterized in that: A rotating cam (121) is fixedly connected to the outer side of the rotating connecting shaft (119); a first fixed bracket (122) is fixedly installed on the outer side of the quantitative conveying box (116); a telescopic sliding rod (123) is slidably connected to the interior of the first fixed bracket (122); a first connecting block (125) is fixedly connected to the end of the telescopic sliding rod (123); a plurality of telescopic springs (124) are fixedly installed on one side of the first connecting block (125); the telescopic springs (124) are fixedly connected to the first fixed bracket (122); and the first connecting block (125) is fittedly connected to the rotating cam (121).

5. A screening device for processing selenium-enriched millet according to claim 4, characterized in that: A cleaning spray box (126) is fixedly mounted on one side of the quantitative delivery box (116); a connecting water pipe (127) is fixedly mounted on the top of the cleaning spray box (126); a plurality of water outlet holes (128) are provided on the inner side of the bottom of the cleaning spray box (126); a connecting baffle (129) is fixedly mounted on one end of the telescopic sliding rod (123) away from the first connecting block (125); and the connecting baffle (129) is slidably connected to the cleaning spray box (126).

6. A screening device for processing selenium-enriched millet according to claim 5, characterized in that: A circulating water pump (130) is arranged on the outside of the bottom of the support frame (101); a filter pipe (131) is fixedly mounted on one side of the bottom of the circulating water pump (130); a first water outlet pipe (132) is fixedly connected to the top of the circulating water pump (130); a second water outlet pipe (133) is fixedly connected to the top of the first water outlet pipe (132); a cleaning nozzle (134) is fixedly mounted on the end of the second water outlet pipe (133); and the cleaning nozzle (134) is fixedly mounted on the inner side of the top of the screening and conveying pipe (102).

7. A screening device for processing selenium-enriched millet according to claim 1, characterized in that: The drying and screening mechanism (2) comprises a sewage collection box (201), a millet collection box (202) is arranged on one side of the sewage collection box (201), a drainage hole (203) is provided on the front of the sewage collection box (201), a second fixed bracket (204) is symmetrically mounted on the top of the sewage collection box (201), the sewage collection box (201) is fixedly mounted on the bottom of the support frame (101), a conveying bracket (205) is fixedly connected to the top of the second fixed bracket (204), a conveying motor (206) is fixedly mounted on one side of the conveying bracket (205), and the conveying motor (206) is fixedly mounted on the conveying motor (206). The output end of the conveying motor (206) is fixedly connected to a first sprocket transmission assembly (207), one side of the first sprocket transmission assembly (207) is fixedly connected to a second sprocket transmission assembly (208), the inner sides of the first sprocket transmission assembly (207) and the second sprocket transmission assembly (208) are both fixedly connected to a conveying roller (209), the outer sides of the conveying roller (209) are transmission-connected to a conveying belt with holes (210), rubber side plates (211) are symmetrically installed on both sides of the conveying belt with holes (210), and a plurality of connecting plates (212) are fixedly connected between the two rubber side plates (211).

8. A screening device for processing selenium-enriched millet according to claim 7, characterized in that: A fixed connection block (213) is symmetrically mounted on one side of the conveying bracket (205); the drying air box (214) is fixedly mounted on the top of the fixed connection block (213); a plurality of drying connection pipes (215) are fixedly mounted on the top of the drying air box (214); a drying air duct (216) is arranged at the end of each of the drying connection pipes (215); a screening connection pipe (217) is fixedly mounted on the bottom of the drying air box (214); a screening air duct (218) is arranged at the end of each of the screening connection pipes (217); and mounting rings (219) are arranged between the drying connection pipe (215) and the drying air duct (216) and between the screening connection pipe (217) and the screening air duct (218).

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