CN108722561B - A maize reducing mechanism for agricultural production - Google Patents

Abstract

The invention relates to a corn crushing device for agricultural production, which sequentially comprises a crushing unit, a drying unit and a material returning unit according to the process flow sequence; the crushing unit comprises a crushing box, a rotating shaft, an impurity removing mechanism, an upper crushing mechanism and a lower crushing mechanism, wherein the impurity removing mechanism, the upper crushing mechanism and the lower crushing mechanism are arranged in the crushing box; the feeding mechanism is used for feeding the dried material into the material returning unit; the material returning unit comprises a material returning box, a material returning screen and a material returning power mechanism. The corn crushing device for agricultural production provided by the invention can be used for fully crushing corn kernels, the crushed corn kernels have no impurity residue, the humidity is low, the product quality is high, and the storage time is long. In addition, this device degree of automation is high, and is low to staff's operation requirement, when playing reduction staff's intensity of labour effect, has accomplished to carry out reasonable optimization to manufacturing procedure, shortens processing cycle to reduction in production cost.

Description

A maize reducing mechanism for agricultural production

Technical Field

The invention relates to the field of agricultural machinery, in particular to a corn smashing device for agricultural production.

Background

Corn is an annual cross-pollinated plant with the same male and female plants, has tall and big plants and strong stems, is an important food crop and feed crop, and is the crop with the highest total yield all over the world. Due to high yield, good quality and strong adaptability, the cultivation area of the corn develops quickly. After the corn is picked, the corn needs to be peeled, then the corn kernels are placed in an open field for airing, and the corn kernels are threshed after being aired to a certain degree, so that the corn kernels are obtained.

Corn meal is one of the deep-processed products of corn kernels. The corn flour contains a large amount of lecithin, linoleic acid, grain alcohol, vitamin E, cellulose and the like, has various health care effects of reducing blood pressure, reducing blood fat, resisting arteriosclerosis, preventing intestinal cancer, maintaining beauty and keeping young, delaying senility and the like, is a suitable good product for diabetics, overcomes the defects of poor mouthfeel and difficult digestion of coarse grain flour food, and has higher economic value.

The invention patent with application number 201711010750.7 discloses a corn crushing mechanical device with impurity removal function, which firstly utilizes a lifting device to lift corn kernels to a certain height before crushing treatment, and utilizes the gravity of the corn to enable the corn to move up and down on a spring in an impurity removal box so as to achieve the purpose of impurity removal. Although the mode can realize the impurity removal treatment of the corn, the energy consumption is large in the process, the cost is not saved, the impurities attached to the surface of the corn cannot be removed, and the impurity removal effect is also to be improved. In order to ensure the quality of finished products, the corn needs to be subjected to primary dust removal treatment before the crushing treatment, and the opening state of a dust removal device needs to be kept in the dust removal process, so that the cost is further improved. In addition, the device has higher requirement on the dryness of the corn, corn flour is easy to agglomerate under the condition of higher corn humidity, the corn flour is easy to deteriorate, the quality guarantee period is shorter, and the storage is not facilitated.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the corn crushing device for agricultural production.

In order to solve the problems, the technical scheme adopted by the invention is as follows:

a corn crushing device for agricultural production comprises a crushing unit, a drying unit and a material returning unit in sequence according to a process flow;

the crushing unit comprises a crushing box, a rotating shaft, an impurity removing mechanism, an upper crushing mechanism and a lower crushing mechanism, wherein the impurity removing mechanism, the upper crushing mechanism and the lower crushing mechanism are arranged in the crushing box;

the top of the crushing box is provided with a feeding hole and an upper insertion hole for a rotating shaft to be vertically inserted, and the bottom of the crushing box is provided with a discharging hole; the discharging opening is hinged with a material door, the material door is used for sealing the discharging opening of the crushed material box, and the material door is connected with a discharging power mechanism and can be driven by the discharging power mechanism to perform overturning motion;

the impurity removing mechanism comprises an upper material guide plate, an air supply mechanism and an air nozzle; the upper material guide plate is obliquely arranged in the material crushing box, an intermediate insertion opening for the vertical insertion of the rotating shaft is formed in the upper material guide plate, and the higher end of the upper material guide plate is positioned below one side of the material inlet of the material crushing box; the air supply mechanism is connected with the air nozzle through a pipeline and used for conveying air; the air nozzle is positioned below the other side of the feeding hole of the material crushing box and above the upper material guide plate;

the crushing unit also comprises a lifting cylinder, a crushing motor and a bearing plate; the lifting cylinder is in driving connection with the bearing plate and can drive the bearing plate to move up and down; the rotating shaft is rotatably connected to the bearing plate and supported by the bearing plate, and is connected with an output shaft of a material crushing motor and can be driven to rotate by the material crushing motor;

the material feeding mechanism comprises a material feeding screen and a material feeding sawtooth assembly; the crushed aggregate screen is arranged below the upper material guide plate, and a lower insertion hole into which the rotating shaft is vertically inserted is formed in the crushed aggregate screen; one end of the rotating shaft is positioned outside the crushed aggregates box, the other end of the rotating shaft extends downwards and sequentially passes through the upper insertion opening, the middle insertion opening and the lower insertion opening, and the rotating shaft part can be limited in a space between the crushed aggregates screen and the bottom wall of the crushed aggregates box; the upper crushing saw tooth assembly comprises a plurality of upper saw teeth arranged from top to bottom; the lower crushing mechanism comprises a plurality of lower saw teeth arranged from top to bottom, and the lower saw teeth and the upper saw teeth are sleeved on the periphery of the rotating shaft; when the lifting mechanism drives the upper saw teeth positioned at the lowest part to be close to the crushed aggregate screen, the lower saw teeth positioned at the lowest part are close to the material door;

a water storage chamber is formed at the bottom of the crushed material box and is positioned below the material door, a lower material guide plate is obliquely arranged in the water storage chamber, and the higher end of the lower material guide plate is close to the joint of the material door and a discharging power mechanism relative to the lower end of the lower material guide plate; in a natural state, the material door is in a horizontal state, and the projection of the material door on the horizontal plane is overlapped with the projection part of the lower material guide plate on the horizontal plane; a material guide cavity is formed between the lower material guide plate and the side wall of the water storage chamber, the bottom of the material guide cavity is provided with a water outlet and a material outlet, and electromagnetic valves are arranged in the water outlet and the material outlet;

the crushing unit also comprises a lifting pump and a clear water tank; a water inlet of the lift pump extends into the bottom of the water storage chamber through a pipeline, and a water outlet of the lift pump extends into the clean water tank through a pipeline; the clean water tank is provided with two water outlets, the two water outlets of the clean water tank are respectively connected with an upper water outlet pipe and a lower water outlet pipe, the water outlet end of the upper water outlet pipe extends into a space between the upper guide plate and the crushed aggregate screen, and the water outlet end of the lower water outlet pipe is arranged close to the free end of the material door;

a conveying mechanism is arranged below the material guide cavity and comprises a conveying belt, the starting end of the conveying belt is positioned below the material outlet of the material guide cavity, and the terminal end of the conveying belt is positioned outside the crushed material box; the conveyor belt is used for conveying the materials falling from the material outlet into the drying unit;

the drying unit is used for drying the crushed materials;

the corn crushing device for agricultural production further comprises a feeding mechanism, and the feeding mechanism is used for feeding the dried material into the material returning unit;

the feed back unit comprises a feed back box, a feed back screen and a feed back power mechanism; the feed back box comprises a left side plate and a right side plate, two ends of the feed back screen are respectively close to the left side plate and the right side plate, and the mesh diameter of the feed back screen is smaller than that of the crushed material screen; the left side plate and the right side plate are respectively connected with a left sliding block and a right sliding block in a sliding mode, the sliding direction of the left sliding block and the sliding direction of the right sliding block are vertical, and the left sliding block and the right sliding block are both connected with the feed back screen through springs; the feed back power mechanism comprises a feed back motor, a feed back screw rod, a left gear, a right gear and a connecting rod; the feed back screw rod is horizontally arranged, two ends of the feed back screw rod are respectively and rotatably connected to the left side plate and the right side plate, two ends of the feed back screw rod are respectively positioned on the outer sides of the left side plate and the right side plate, and the feed back screw rod can be driven to rotate by the feed back motor; the left gear and the right gear are respectively sleeved at two ends of the feed back screw rod, connecting rods are respectively connected to the left gear and the right gear in a pivot mode, the joint of each connecting rod and the left gear is located on the outer side of the central line of the left gear, the joint of each connecting rod and the right gear is located on the outer side of the central line of the right gear, and one end of each connecting rod is movably connected to the left sliding block and the right sliding block; still be connected with the feed back screw through threaded connection mode on the feed back lead screw, the feed back screw is located in the feed back incasement, be connected with the pipe clamp on the feed back screw, the pipe clamp is used for fixed feed back pipe, the feed back pipe adopts the elastic deformation material to make, the import of feed back pipe is located in the feed back incasement, and is located feed back screen cloth top, the export of feed back pipe is located in the crushed aggregates incasement, and is located between crushed aggregates screen cloth and the bin gate, be connected with the feed back vacuum pump on the feed back pipe.

Preferably, the blanking power mechanism comprises a blanking rod and a movable block, two ends of the blanking rod are respectively hinged to the material door and the movable block, the movable block is located below the material door, and the movable block is connected with the first power mechanism or the second power mechanism to move horizontally; the first power mechanism comprises a telescopic rod and a blanking cylinder, the movable block is connected to the telescopic end of the telescopic rod, and the telescopic end of the telescopic rod is connected with the piston end of the blanking cylinder; the second power mechanism comprises a discharging screw, a discharging screw rod and a discharging motor, the movable block is connected to the discharging screw rod, the discharging screw rod is connected to the discharging screw rod in a threaded connection mode, and the discharging screw rod is horizontally arranged and connected with an output shaft of the discharging motor.

Preferably, the drying unit includes the drying cabinet, offer on the drying cabinet and supply the conveyer belt level to penetrate into respectively and take the mouth with advancing that the level was worn out and go out the area mouth, be equipped with the drying tube in the drying cabinet, the axial of drying tube with the direction of transfer of conveyer belt is unanimous, a plurality of air outlets have been seted up along its axial to the drying tube, the drying tube pass through the pipeline with air feed mechanism connects, the drying tube with be connected with electrical heating box on the pipeline between the air feed mechanism, electrical heating box's import with air feed mechanism connects, electrical heating box has two exports, one of them export with the drying tube is connected, and another export stretches into through the pipeline to in the space between feed back screen cloth and the bin gate.

Preferably, the feeding mechanism comprises a bin and a feeding vacuum pump; the feed box is arranged close to the terminal of the conveying belt, an electric heating pipe is arranged in the feed box, an obliquely arranged scraping plate is arranged between the conveying belt and the feed box, the higher end of the scraping plate is abutted against the conveying belt, and the lower end of the scraping plate is positioned in the feed box; the feed box with through material pipe intercommunication between the feed back box, the export of material pipe is located feed back screen cloth top, the pay-off vacuum pump is connected on the material pipe.

Preferably, still be equipped with the separation plate in the reservoir chamber, the separation plate is "L" shape of falling, the separation plate with the cooperation is formed with the clear water chamber between the lateral wall of reservoir chamber and the diapire, the water inlet of elevator pump stretches into extremely through the pipeline in the clear water chamber, the separation plate block has the filter screen or the mesh that supplies liquid inflow is seted up with running through on the separation plate.

Preferably, the upper surface of the charging door is connected with a rubber pad, and a clamping groove matched with the bottom of the crushed aggregates box in shape is formed in the rubber pad.

Preferably, the lower surface of the free end of the charging door is connected with a pressure sensor or a proximity switch, and when the charging door is driven by the blanking power mechanism to move to the stroke end of the charging door, the free end of the charging door is lapped on the material guide plate.

Preferably, a driving gear is sleeved on the periphery of an output shaft of the feed back motor and is meshed with the left gear or the right gear; the left side board and the right side board are both vertically provided with sliding grooves, and the left sliding block and the right sliding block are respectively connected in the two sliding grooves in a matching manner.

Preferably, an observation window is installed at the top of the feed back box, a camera is arranged on the outer side of the observation window, and the camera is used for shooting an image of the part where the feed back screen is located through the observation window.

Compared with the prior art, the invention has the following implementation effects:

after the corn kernels enter the crushing box, the corn kernels fall gradually under the action of gravity. At the kernel of corn whereabouts in-process, air feed mechanism blows towards the kernel of corn through the tuyere, and light impurity, dust etc. of doping in the kernel of corn are less in weight, and light impurity and dust can be blown to the stock guide, and the kernel of corn then can continue the whereabouts to be kept apart on the crushed aggregates screen cloth. Because light impurities and dust are separated from the corn kernels before crushing, the purity of the crushed corn kernels is high, and the quality is guaranteed.

After the corn kernels are supported by the crushing screen, gravel, crushed stones, and the like mixed in the corn kernels fall through the meshes of the crushing screen and are continuously deposited on the gate of the crushing box. During the process, clear water can be filled into the particle box through the clear water box until the corn kernels are completely immersed by the filling amount of the clear water. And starting the lifting cylinder, wherein the lifting cylinder drives the upper sawteeth to move in the vertical direction relative to the crushing screen until the upper sawteeth move above the liquid level. And starting the material crushing motor, driving the rotating shaft to rotate by the material crushing motor, and driving the lower saw teeth to rotate by the rotating shaft. The sawtooth rotates down and stirs the clear water in the crushed aggregates case, and the kernel of corn moves along with the clear water, and the impurity of attaching to the kernel of corn surface breaks away from the kernel of corn to see through the crushed aggregates screen cloth and constantly deposit on the bin gate of crushed aggregates case. Because no impurities are left on the surface of the corn kernels before the corn kernels are crushed, the crushed corn kernels are cleaner and more sanitary. In addition, before the kernel of corn implements crushing treatment, hard things such as rubble along with the kernel of corn entering have been picked out, in the time of promoting processing back product quality, also can avoid hard things such as rubble and last sawtooth or take place the rigidity friction down between the sawtooth, reduced the wearing and tearing of going up sawtooth or sawtooth down, when guaranteeing sawtooth life, also help the crushing efficiency of guarantee sawtooth to the kernel of corn.

After the corn kernels are soaked in clear water for a preset time, the discharging door is driven to turn downwards through the discharging power mechanism, the discharging hole of the crushing box is opened, and crushed stones and water fall through the discharging hole and fall into the water storage chamber. After the discharge port of the crushed material box is opened for a preset time, the discharge door is driven to reset through the discharging power mechanism, and the discharge port of the crushed material box is completely closed. Above-mentioned process can in time discharge away impurity such as rubble by crushed aggregates case, prevents that impurity such as rubble from sneaking into the maize meal after smashing again, has guaranteed the quality of maize meal.

After impurities such as broken stones are discharged from the discharge port, clear water can be sprayed towards the bin gate through the clear water tank and the water outlet pipe, the clear water washes the bin gate, no impurities are left on the bin gate, the purity of the crushed corn flour is high, and the quality of the corn flour is further guaranteed.

After discharging impurities such as broken stones from the discharge port, the discharge port is in a closed state, the upper saw teeth are driven by the lifting cylinder to be close to the crushing screen, the lower saw teeth are driven by the crushing motor to be close to the material door, and the upper saw teeth and the lower saw teeth are driven by the crushing motor to rotate. In the process of rotating the upper saw teeth, the upper saw teeth crush the corn kernels, and after the corn kernels are crushed to a certain particle size, the corn kernels can fall through the crushed material screen mesh and are secondarily crushed under the action of the lower saw teeth. The crushing efficiency can be greatly improved by adopting a segmented crushing mode. In the broken time, the lift cylinder can also drive and drive the sawtooth and carry out the up-and-down motion with lower sawtooth, can also make the sawtooth carry out the breakage to the kernel of corn on not co-altitude through this mode, and crushing efficiency and crushing effect all improve to some extent.

The kernel of corn is changed into powdered by original graininess in crushed aggregates case, carries out predetermined time after the broken handling process, drives through unloading power unit drive and drives the bin gate and overturn downwards, and the discharge gate of crushed aggregates case is opened, and maize flour is along bin gate downstream gradually, is collected in the guide intracavity that reservoir chamber and lower stock guide formed after breaking away from the bin gate. Closing the electromagnetic valve at the water outlet, opening the electromagnetic valve at the material outlet, dropping the corn flour on the conveyor belt through the material outlet of the material guide cavity, and passing through the drying unit in the process of moving along the conveyor belt, wherein the corn flour is dried by the drying unit, and the moisture on the corn flour is effectively evaporated. The process can effectively reduce the humidity of the corn flour and prolong the storage time of the corn flour while realizing the quick feeding of the corn flour. In addition, before the corn flour is fed, the electromagnetic valve at the water outlet is opened, the electromagnetic valve at the material outlet is closed, gravel and broken stones falling from the discharge hole of the broken material box fall into the material guide cavity, and the gravel and broken stones fall into the bottom of the water storage chamber through the water outlet of the material guide cavity. This mode design benefit can realize the function of arranging the material of impurity and maize meal unloading through a guide chamber, has accomplished the reasonable optimization and the effective integration of function to the device product structure. Because when impurity row material, the clear water that falls down by the bin gate can continuously erode the inner wall of guide chamber, and the guide intracavity does not have impurity to remain, has further guaranteed the purity of maize meal.

The drying process is completed after the corn kernels are crushed, and the corn flour is subjected to a continuous drying process of the drying box in the process of moving along with the conveyor belt. The drying process and the blanking process are carried out simultaneously, so that compared with a treatment mode of cleaning firstly and then drying, the processing time is greatly reduced, and the production and processing period of the corn flour is shortened. In addition, because the corn flour is flatly laid on the conveyor belt in the feeding process, the contact area of the corn flour and the drying unit is large, the drying time is short, and the drying effect is ideal.

The corn kernels can cause certain difference in the particle size of the corn flour due to insufficient crushing, and the quality of the produced corn flour is affected if the particle size of the corn flour is large, so that the corn flour can be fed into a feed back box to be screened after drying is completed. In the sieving process, a feed back motor drives a feed back screw rod to rotate, the feed back screw rod drives a left gear and a right gear to rotate, the left gear and the right gear respectively drive a left sliding block and a right sliding block to do reciprocating motion in the vertical direction through connecting rods in the rotating process, and the left sliding block and the right sliding block move to drive a feed back screen to do reciprocating motion in the vertical direction. The returning screen effectively disperses the corn flour on the returning screen in the moving process, the corn flour with large particle size is isolated on the returning screen, and the corn flour with small particle size falls through the returning screen and is deposited at the bottom of the returning box. Through the process, the corn flour can be quickly sorted, the granularity of the sieved corn flour is stable in a proper range, and the quality of the corn flour is guaranteed. When the feed back screw rod rotates to drive the feed back screen to do up-and-down reciprocating motion, the feed back screw rod makes horizontal motion along the feed back screw rod, and the pipe clamp and the feed back pipe on the pipe clamp make synchronous horizontal motion along with the feed back screw rod. When the content of the corn flour loaded on the feed back screen is large, the feed back vacuum pump can be started, the corn flour on the feed back screen is fed into the crushing box by the feed back vacuum pump, and the corn flour is crushed again by the lower saw teeth. Because the feed back pipe is connected on the feed back screw through the pipe clamp, when the feed back screw rotates, the pipe clamp can drive the feed back pipe to carry out horizontal motion to send the maize meal on the feed back screen cloth into the crushed material case completely. The horizontal movement of the pipe clamp can enable the feed back pipe to suck away the corn flour on the feed back screen at different horizontal positions, the residual amount of the corn flour on the feed back screen is small, and the utilization rate of the raw materials is high. The output shaft through controlling the feed back motor is forward and reverse rotation in turn and can be controlled pipe clamp, left slider and right slider to carry out corresponding action, and this mode design benefit has reduced the device to the demand of power supply, under the prerequisite of guaranteeing stock utilization and product quality, can effectively reduce the cost of device, does benefit to marketing.

In conclusion, the corn crushing device for agricultural production provided by the invention can be used for fully crushing corn kernels, the crushed corn flour has no impurity residue, the humidity is low, the product quality is high, and the storage time is long. In addition, this device degree of automation is high, and is low to staff's operation requirement, when playing reduction staff's intensity of labour effect, has accomplished to carry out reasonable optimization to manufacturing procedure, shortens processing cycle to reduction in production cost.

Drawings

FIG. 1 is a schematic view showing the construction of a corn milling apparatus for agricultural production according to the present invention.

Fig. 2 is a schematic structural view of an embodiment of the blanking power mechanism of the present invention.

Fig. 3 is a schematic structural view of another embodiment of the blanking power mechanism of the present invention.

Fig. 4 is a schematic view of the structure of the chip bin of the present invention with the outlet open.

Fig. 5 is a schematic view of the structure of the clean water tank, the water storage chamber and the part where the particle box is located.

Fig. 6 is a schematic view of the structure of the part where the drying unit and the crushing unit are located according to the invention.

Fig. 7 is a schematic structural view of the feeding unit of the present invention.

Fig. 8 is a schematic view of the structure of the portion of the feed back unit and the particle box of the present invention.

FIG. 9 is a schematic structural diagram of the feed back unit of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Example 1

Referring to fig. 1, the present embodiment proposes a corn crushing apparatus for agricultural production, which includes a crushing unit, a drying unit and a material returning unit in order of process flow.

The crushing unit comprises a crushing box 11, a rotating shaft 24, and an impurity removing mechanism, an upper crushing mechanism and a lower crushing mechanism which are arranged in the crushing box 11.

The top of the chip box 11 is provided with a feeding hole and an upper insertion hole for the rotating shaft 24 to be vertically inserted, and the bottom of the chip box 11 is provided with a discharging hole. The discharging opening is hinged with a material door 13, the material door 13 is used for sealing the discharging opening of the crushed material box 11, and the material door 13 is connected with a discharging power mechanism and can be driven by the discharging power mechanism to perform turnover motion.

The impurity removing mechanism comprises an upper material guide plate 29, an air supply mechanism 59 and an air nozzle 28. The upper material guide plate 29 is obliquely arranged in the scrap box 11, an intermediate insertion opening for the vertical insertion of the rotating shaft 24 is formed in the upper material guide plate 29, and the higher end of the upper material guide plate 29 is positioned below one side of the feeding opening of the scrap box 11. The air supply mechanism 59 is connected with the air nozzle 28 through a pipeline and used for conveying air. The air nozzle 28 is located below the other side of the feeding hole of the scrap box 11 and above the upper material guide plate 29.

The crushing unit further comprises a lifting cylinder 21, a crushing motor 22 and a bearing plate 23. The lifting cylinder 21 is in driving connection with the bearing plate 23 and can drive the bearing plate 23 to move up and down. The rotating shaft 24 is rotatably connected to the bearing plate 23 and supported by the bearing plate 23, and the rotating shaft 24 is connected to an output shaft of the material crushing motor 22 and can be driven by the material crushing motor 22 to rotate.

The spitwad feeding mechanism includes a spitwad screen 25 and a spitwad saw assembly. The crushed aggregates screen 25 is arranged below the upper material guide plate, and a lower insertion opening for the rotating shaft 24 to vertically insert is formed in the crushed aggregates screen 25. 24 one end of pivot is located the crushed aggregates case 11 outside, 24 other ends downwardly extending of pivot to loop through last inserted hole, well inserted hole and lower inserted hole, 24 parts of pivot can be spacing in the space between crushed aggregates screen 25 and crushed aggregates case 11 diapire. The upper scrap saw tooth assembly includes a plurality of upper saw teeth 26 arranged from top to bottom. The material crushing mechanism comprises a plurality of lower saw teeth 27 arranged from top to bottom, and the lower saw teeth 27 and the upper saw teeth 26 are sleeved on the periphery of the rotating shaft 24. When the lifting mechanism drives the upper saw-tooth 26 positioned at the lowest part to be close to the material crushing screen 25, the lower saw-tooth 27 positioned at the lowest part is close to the material door 13.

A water storage chamber 30 is formed at the bottom of the material crushing box 11, the water storage chamber 30 is located below the material door 13, a lower material guide plate 31 which is obliquely arranged is arranged in the water storage chamber 30, and the higher end of the lower material guide plate 31 is close to the connection position of the material door 13 and the discharging power mechanism relative to the lower end thereof. In a natural state, the material gate 13 is in a horizontal state, and a projection of the material gate 13 on the horizontal plane is overlapped with a projection of the lower material guide plate 31 on the horizontal plane. A material guiding cavity is formed between the lower material guiding plate 31 and the side wall of the water storage chamber 30, a water outlet 32 and a material outlet 33 are formed at the bottom of the material guiding cavity, and electromagnetic valves are arranged in the water outlet 32 and the material outlet 33.

The milling unit further comprises a lift pump 35 and a clean water tank 36. A water inlet of the lift pump 35 extends into the bottom of the water storage chamber 30 through a pipeline, and a water outlet of the lift pump 35 extends into the clean water tank 36 through a pipeline. The clean water tank 36 is provided with two water outlets, the two water outlets of the clean water tank 36 are respectively connected with an upper water outlet pipe and a lower water outlet pipe, the water outlet end of the upper water outlet pipe extends into the space between the upper guide plate 29 and the crushed aggregate screen 25, and the water outlet end of the lower water outlet pipe is arranged close to the free end of the material door 13.

The material guide cavity is provided with a conveying mechanism below, the conveying mechanism comprises a conveying belt 40, the starting end of the conveying belt 40 is located below the material outlet 33 of the material guide cavity, and the terminal end of the conveying belt 40 is located outside the crushed material box 11. The conveyor belt 40 is used for conveying the material falling from the material outlet 33 into the drying unit.

The drying unit is used for drying the crushed materials.

The corn smashing device for agricultural production further comprises a feeding mechanism, and the feeding mechanism is used for feeding dried materials into the material returning unit.

Referring to fig. 8 and 9, the material returning unit includes a material returning box 41, a material returning screen 42 and a material returning power mechanism. The material return box 41 comprises a left side plate and a right side plate, two ends of the material return screen 42 are respectively close to the left side plate and the right side plate, and the mesh diameter of the material return screen 42 is smaller than that of the crushed material screen 25. The left side board and the right side board are respectively connected with a left slide block 56 and a right slide block 57 in a sliding manner, the sliding directions of the left slide block 56 and the right slide block 57 are vertical, and the left slide block 56 and the right slide block 57 are both connected with the feed back screen 42 through springs 58. The material returning power mechanism comprises a material returning motor 48, a material returning screw rod 50, a left gear 53, a right gear 54 and a connecting rod 55. The feed back screw rod 50 is horizontally arranged, two ends of the feed back screw rod are respectively and rotatably connected to the left side plate and the right side plate, two ends of the feed back screw rod 50 are respectively positioned on the outer sides of the left side plate and the right side plate, and the feed back screw rod 50 can be driven by the feed back motor 48 to rotate. The left gear 53 and the right gear 54 are respectively sleeved at two ends of the feed back screw rod 50, the left gear 53 and the right gear 54 are both pivotally connected with a connecting rod 55, the joint of the connecting rod 55 and the left gear 53 is positioned at the outer side of the central line of the left gear 53, the joint of the connecting rod 55 and the right gear 54 is positioned at the outer side of the central line of the right gear 54, and one end of each of the two connecting rods 55 is respectively movably connected to the left slider 56 and the right slider 57. Still be connected with feed back screw 51 through threaded connection mode on the feed back lead screw 50, feed back screw 51 is located in the feed back box 41, be connected with pipe clamp 52 on the feed back screw 51, pipe clamp 52 is used for fixed feed back pipe 43, feed back pipe 43 adopts elastic deformation material to make, the import of feed back pipe 43 is located in the feed back box 41, and is located feed back screen cloth 42 top, the export of feed back pipe 43 is located in the crushed aggregates box 11, and is located between crushed aggregates screen cloth 25 and the bin gate 13, be connected with feed back vacuum pump 44 on the feed back pipe 43.

In the above scheme, after the corn kernels enter the crushing box 11 through the hopper 12 communicated with the feeding hole of the crushing box 11, the corn kernels gradually fall down under the action of gravity. During the falling process of the corn kernels, the air supply mechanism 59 blows air towards the corn kernels through the air nozzles 28, the light impurities, dust and the like doped in the corn kernels are light in weight, the light impurities and the dust can be blown to the upper guide plate 29, and the corn kernels can continuously fall and are isolated on the crushing material screen 25. Because light impurities and dust are separated from the corn kernels before crushing, the purity of the crushed corn kernels is high, and the quality is guaranteed.

After the corn kernels are supported by the crushing screen 25, gravel, crushed stones, etc. mixed in the corn kernels fall through the meshes of the crushing screen 25 and are continuously deposited on the gate 13 of the crushing box 11. During this process, fresh water may be introduced into the particle tank 11 through the fresh water tank 36, the fresh water being introduced in an amount to completely submerge the corn kernels. And starting the lifting cylinder 21, wherein the lifting cylinder 21 drives the upper saw teeth 26 to move in the vertical direction relative to the crushing screen 25 until the upper saw teeth 26 move above the liquid level. The material crushing motor 22 is started, the material crushing motor 22 drives the rotating shaft 24 to rotate, and the rotating shaft 24 drives the lower saw teeth 27 to rotate. The lower saw teeth 27 rotate to stir the clean water in the crushing box 11, the corn kernels move along with the clean water, and impurities attached to the surfaces of the corn kernels are separated from the corn kernels and are continuously deposited on the material door 13 of the crushing box 11 through the crushing screen 25. Because no impurities are left on the surface of the corn kernels before the corn kernels are crushed, the crushed corn kernels are cleaner and more sanitary. In addition, before the kernel of corn implements crushing treatment, the rubble that gets into along with the kernel of corn etc. has been picked out, in the product quality after promoting the processing, also can avoid hard thing such as rubble to take place rigid friction with last sawtooth 26 or down between the sawtooth 27, has reduced the wearing and tearing of going up sawtooth 26 or down sawtooth 27, when guaranteeing sawtooth life, also helps guaranteeing the crushing efficiency of sawtooth to the kernel of corn.

After the corn kernels are soaked in clear water for a preset time, the feeding door 13 is driven to turn downwards through the feeding power mechanism, the discharge hole of the crushing box 11 is opened, and crushed stones and water fall through the discharge hole and fall into the water storage chamber 30. After the discharge port of the crushed aggregate box 11 is opened for a preset time, the discharge door 13 is driven to reset through the blanking power mechanism, and the discharge port of the crushed aggregate box 11 is completely closed. Above-mentioned process can in time discharge away impurity such as rubble by crushed aggregates case 11, prevents that impurity such as rubble from sneaking into the maize meal after smashing again, has guaranteed the quality of maize meal.

After impurities such as broken stones are discharged from the discharge hole, clear water can be sprayed towards the bin gate 13 through the clear water tank 36 and the water outlet pipe, the clear water washes the bin gate 13, no impurities are left on the bin gate 13, the purity of the crushed corn flour is high, and the quality of the corn flour is further guaranteed.

After impurities such as broken stones are discharged from the discharge port, the discharge port is in a closed state, the upper saw teeth 26 are driven to be close to the crushing screen by the lifting cylinder 21, the lower saw teeth 27 are driven to be close to the material door 13, and the upper saw teeth 26 and the lower saw teeth 27 are driven to rotate by the crushing motor 22. During the rotation of the upper saw teeth 26, the upper saw teeth 26 crush the corn kernels, and after the corn kernels are crushed to a certain size, the corn kernels fall through the crushing screen 25 and are secondarily crushed by the lower saw teeth 27. The crushing efficiency can be greatly improved by adopting a segmented crushing mode. In the time of crushing, lift cylinder 21 can also drive and drive sawtooth 26 and lower sawtooth 27 and carry out the up-and-down motion, can also make the sawtooth carry out the breakage to the kernel of corn on the not co-altitude through this mode, and crushing efficiency and crushing effect all improve to some extent.

The kernel of corn is changed into powdered by original graininess in crushed aggregates case 11, carries out predetermined time after the broken handling process, drives through unloading power unit drive and drives bin gate 13 upset downwards, and crushed aggregates case 11's discharge gate is opened, and maize flour is along bin gate 13 downstream gradually, is collected in the guide intracavity that reservoir chamber 30 and lower stock guide 31 formed after breaking away from bin gate 13. The electromagnetic valve at the water outlet 32 is closed, the electromagnetic valve at the material outlet 33 is opened, the corn flour falls on the conveyor belt 40 through the material outlet 33 of the material guide cavity and passes through the drying unit in the process of moving along the conveyor belt 40, the corn flour is dried by the drying unit, and the moisture on the corn flour is effectively evaporated. The process can effectively reduce the humidity of the corn flour and prolong the storage time of the corn flour while realizing the quick feeding of the corn flour. In addition, before the corn flour is fed, the electromagnetic valve at the water outlet 32 is opened, the electromagnetic valve at the feed outlet 33 is closed, the gravel and broken stones falling from the discharge port of the crushing box 11 fall into the material guide cavity, and the gravel and broken stones fall to the bottom of the water storage chamber 30 through the water outlet 32 of the material guide cavity. This mode design benefit can realize the function of arranging the material of impurity and maize meal unloading through a guide chamber, has accomplished the reasonable optimization and the effective integration of function to the device product structure. Because when the impurity is arranged the material, the clear water that falls down by bin gate 13 can continuously erode the inner wall of guide chamber, and the guide intracavity does not have the impurity to remain, has further guaranteed the purity of maize meal.

The drying process is completed after the corn kernels are broken, and the corn flour is subjected to a continuous drying process by the drying oven 39 during the movement of the corn flour along with the conveyor 40. The drying process and the blanking process are carried out simultaneously, so that compared with a treatment mode of cleaning firstly and then drying, the processing time is greatly reduced, and the production and processing period of the corn flour is shortened. In addition, because the corn flour is flatly laid on the conveyor belt 40 in the feeding process, the contact area of the corn flour and the drying unit is large, the drying time is short, and the drying effect is ideal.

The corn grains are not crushed sufficiently, so that the grain size of the corn flour is different, and if the grain size of the corn flour is larger, the quality of the produced corn flour is affected, so that after the drying is finished, the corn flour is fed into a feed box 41 to be screened. In the sieving process, the feed back motor 48 drives the feed back screw rod 50 to rotate, the feed back screw rod 50 drives the left gear 53 and the right gear 54 to rotate, the left gear 53 and the right gear 54 respectively drive the left slider 56 and the right slider 57 to do reciprocating motion in the vertical direction through the connecting rod 55 in the rotating process, and the left slider 56 and the right slider 57 move to drive the feed back screen 42 to do reciprocating motion in the vertical direction. The returning screen 42 effectively disperses the corn flour on the returning screen 42 in the moving process, the corn flour with large particle size is isolated on the returning screen 42, and the corn flour with small particle size falls through the returning screen 42 and is deposited at the bottom of the returning box 41. Through the process, the corn flour can be quickly sorted, the granularity of the sieved corn flour is stable in a proper range, and the quality of the corn flour is guaranteed. When the feed-back screw rod 50 rotates to drive the feed-back screen 42 to reciprocate up and down, the feed-back screw nut 51 moves horizontally along the feed-back screw rod 50, and the pipe clamp 52 and the feed-back pipe 43 thereon move horizontally and synchronously along with the feed-back screw nut 51. When the content of the corn flour loaded on the feed-back screen 42 is large, the feed-back vacuum pump 44 can be started, the corn flour on the feed-back screen 42 is fed into the crushing box 11 by the feed-back vacuum pump 44, and the lower saw teeth 27 crush the corn flour again. Because the feed back pipe 43 is connected to the feed back nut 51 through the pipe clamp 52, when the feed back nut 51 rotates, the pipe clamp 52 can drive the feed back pipe 43 to move horizontally, so that the corn flour on the feed back screen 42 is completely sent to the chip bin 11. The horizontal movement of the pipe clamp 52 can enable the feed back pipe 43 to suck away the corn flour on the feed back screen 42 at different horizontal positions, the residual amount of the corn flour on the feed back screen 42 is small, and the utilization rate of the raw materials is high. When the material returning motor 48 works, the output shaft of the material returning motor 48 needs to rotate in a positive and negative direction alternatively, so that the material returning screw 51 can drive the pipe clamp 52 to do reciprocating motion in the horizontal direction, and the damage of the material returning motor 48 caused by the fact that the material returning screw 51 is clamped on the material returning screw rod 50 is prevented. Because pipe clamp 52, left slider 56 and right slider 57 all receive the drive of feed back motor 48 to carry out corresponding action, this mode design benefit has reduced the device to the demand of power supply, under the prerequisite of guaranteeing utilization ratio of raw materials and product quality, can effectively reduce the cost of device, do benefit to marketing.

Example 2

Referring to fig. 2 and 3, the present embodiment is different from embodiment 1 in that the blanking power mechanism includes a blanking rod 14 and a movable block 20, two ends of the blanking rod 14 are respectively hinged to the bin gate 13 and the movable block 20, the movable block 20 is located below the bin gate 13, and the movable block 20 is connected to the first power mechanism or the second power mechanism to perform horizontal movement.

Referring to fig. 3, the first power mechanism includes an expansion link 18 and a discharging cylinder 19, the movable block 20 is connected to the expansion end of the expansion link 18, and the expansion end of the expansion link 18 is connected to the piston end of the discharging cylinder 19.

On the premise that the movable block 20 is connected with the first power mechanism, when a discharge hole of the scrap box 11 needs to be opened or closed, the telescopic rod 18 is driven by the discharging cylinder 19 to extend or contract, so that the movable block 20 is driven to move horizontally. Since the two ends of the discharging rod 14 are respectively hinged on the movable block 20 and the material door 13, and one end of the material door 13 is hinged on the crushed material box 11, the material door 13 turns up or down along with the horizontal movement of the discharging rod 14.

Referring to fig. 2 and 4, the second power mechanism includes a discharging screw nut 15, a discharging screw rod 16 and a discharging motor 17, the movable block 20 is connected to the discharging screw nut 15, the discharging screw nut 15 is connected to the discharging screw rod 16 in a threaded connection manner, and the discharging screw rod 16 is horizontally arranged and connected to an output shaft of the discharging motor 17.

On the premise that the movable block 20 is connected with the second power mechanism, when a discharge hole of the crushed material box 11 needs to be opened or closed, the blanking motor 17 drives the blanking screw rod 16 to rotate, and the blanking screw rod 16 rotates to drive the blanking screw nut 15 to move horizontally, so that the movable block 20 is driven to move horizontally. Since the two ends of the discharging rod 14 are respectively hinged on the movable block 20 and the material door 13, and one end of the material door 13 is hinged on the crushed material box 11, the material door 13 turns up or down along with the horizontal movement of the discharging rod 14.

Through first power unit and second power unit's setting, can provide the outrigger to bin gate 13, prevent to rock because of bin gate 13 among the crushing process and lead to the material to take place to leak, help guaranteeing the crushing effect of sawtooth 27 to the material down. In addition, the material door 13 can be stably moved when impurities are discharged or blanking is carried out, the material door 13 is in an inclined state, and the materials or gravels and other impurities in the material door are discharged more thoroughly.

Example 3

Referring to fig. 6 and 7, the present embodiment is different from embodiment 1 in that the drying unit includes a drying box 39, the drying box 39 is provided with a belt inlet and a belt outlet for the horizontal penetration and the horizontal penetration of the conveyor belt 40, a drying pipe 38 is arranged in the drying box 39, the axial direction of the drying pipe 38 is consistent with the conveying direction of the conveyor belt 40, the drying tube 38 is provided with a plurality of air outlets along the axial direction thereof, the drying tube 38 is connected with the air supply mechanism 59 through a pipeline, an electric heating box 37 is connected on the pipeline between the drying pipe 38 and the air supply mechanism 59, the inlet of the electric heating box 37 is connected to the air supply mechanism 59, the electric heating box 37 has two outlets, one of the outlets is connected to the drying duct 38 and the other outlet extends through a duct into the space between the return screen 42 and the sluice gate 13.

In this embodiment, after the corn flour is spread on the conveyor belt 40, the conveyor belt 40 can drive the corn flour to pass through and out of the drying oven 39, so that the corn flour is dried in the drying oven 39. In the drying process, the electric heating pipe in the electric heating box 37 generates heat, supplies air into the motor heating box through the air supply mechanism 59, the air is heated and heated, the hot air enters the drying pipe 38 through the pipeline and is blown to the surface of the corn flour through the air outlet formed in the drying pipe 38, so that the moisture in the corn flour can be rapidly evaporated, and the drying efficiency of the corn flour is improved. Since the air supply mechanism 59 (the air supply mechanism may be a fan) can supply air to the air nozzle 28 and the drying pipe 38, the utilization rate of the air supply mechanism 59 is improved, and the design cost of the device is reduced. In addition, during the process of discharging gravel and crushed stones from the crushing box 11, hot air can be delivered into the crushing box 11 through the air supply mechanism 59 and the electric heating box 37 to dry the corn kernels. Because the corn kernels are subjected to the pre-drying process before the crushing treatment, the design correspondingly reduces the drying time after the corn kernels are pulverized, thereby reducing the retention time of the corn flour in the drying box 39, effectively utilizing the time and being beneficial to shortening the processing period of the corn kernels.

Example 4

Referring to fig. 7, the present embodiment is different from embodiment 1 in that the feeding mechanism includes a hopper 46 and a feeding vacuum pump 47. The feed box 46 is close to the terminal of the conveyor belt 40, an electric heating pipe is arranged in the feed box 46, an inclined scraper plate 45 is arranged between the conveyor belt 40 and the feed box 46, the higher end of the scraper plate 45 is abutted against the conveyor belt 40, and the lower end of the scraper plate 45 is positioned in the feed box 46. The feed box 46 is communicated with the feed back box 41 through a feed pipe, an outlet of the feed pipe is positioned above the feed back screen 42, and the feeding vacuum pump 47 is connected to the feed pipe.

After the meal passes through the drying unit, it will leave the conveyor 40 and fall into the bin by inertial and gravity forces. There may be insufficient bottom drying of the meal during the transfer, which may cause the lowermost meal to stick to the surface of the conveyor belt 40, so that the collection rate of the meal will be reduced. This embodiment can make the maize meal on the conveyer belt 40 get into the workbin to the utmost point at the scraping flitch 45 of conveyer belt 40 terminal setting, when guaranteeing the collection rate, also can provide the direction for the motion of maize meal, and the clean no dust diffusion of production site has avoided environmental pollution. The electric heating pipe arranged in the feed box 39 can also supplement and dry the corn flour when the humidity of the corn flour does not meet the requirement, so that the phenomenon of feed back of the corn flour caused by the fact that the dryness of the corn flour does not meet the requirement is prevented.

Example 5

Referring to fig. 5, the present embodiment is different from embodiment 1 in that a separation plate 34 is further disposed in the water storage chamber 30, the separation plate 34 is in an inverted "L" shape, a clear water cavity is formed between the separation plate 34 and the side wall and the bottom wall of the water storage chamber 30 in a matching manner, a water inlet of the lift pump 35 extends into the clear water cavity through a pipeline, and a filter screen is clamped on the separation plate 34 or a mesh hole for liquid to flow into is penetratingly formed in the separation plate 34.

Can filter the water in the reservoir chamber 30 through the mesh on the separator plate 34 or the filter screen on the separator plate 34, the water that gets into the clear water intracavity is nearly zero impurity, can go into clear water tank 36 with the water pump in the clear water intracavity through elevator pump 35, has realized the recycle of water from this.

Example 6

The difference between the embodiment and the embodiment 1 is that a rubber pad is connected to the upper surface of the material door 13, and a clamping groove matched with the bottom of the material crushing box 11 in shape is formed in the rubber pad.

Can improve the leakproofness between bin gate 13 and crushed aggregates case 11 through the draw-in groove on rubber pad and the rubber pad, do not have maize flour to the kibbling in-process of maize and leak, the production site does not have the dust diffusion, and has guaranteed the utilization ratio of raw materials.

Example 7

Referring to fig. 4, the present embodiment is different from embodiment 1 in that a pressure sensor or a proximity switch is connected to a lower surface of a free end of the material door 13, and when the material door 13 is driven by the blanking power mechanism to move to the end of its stroke, the free end of the material door 13 is overlapped on the material guide plate.

When the material door 13 is lapped on the material guide plate, a controller connected with a pressure sensor or a proximity switch controls a power source of the blanking power mechanism to stop working, and one end of the material door 13 is supported by the lower material guide plate 31. Through the combined supporting action of the lower material guide plate 31 and the blanking rod 14, the material door 13 can be kept in a stable state for a long time in the blanking process, and the structural design is more reasonable.

Example 8

Referring to fig. 9, the present embodiment is different from embodiment 1 in that a driving gear 49 is sleeved on an outer periphery of an output shaft of the feed-back motor 48, and the driving gear 49 is engaged with the left gear 53 or the right gear 54. The left side plate and the right side plate are both vertically provided with sliding grooves, and the left sliding block 56 and the right sliding block 57 are respectively connected in the two sliding grooves in a matching manner.

When the material returning screen 42 needs to be driven to vibrate or the pipe clamp 52 needs to move horizontally, the material returning motor 48 drives the driving gear 49 to rotate, the driving gear 49 rotates to drive the left gear 53 or the right gear 54 engaged with the driving gear to rotate, so as to drive the material returning screw rod 50 to rotate, and further, the corresponding actions of the material returning screen 42 and the pipe clamp 52 are realized. Because the feed-back motor 48 drives the feed-back screw rod 50 to rotate through the driving gear 49 and the left gear 53 or the right gear 54, the movement of the feed-back screen 42 and the pipe clamp 52 is more stable and the work is reliable.

Example 9

The difference between this embodiment and embodiment 1 is that an observation window is installed on the top of the feed back box 41, and a camera is arranged outside the observation window and used for shooting an image of the part where the feed back screen 42 is located through the observation window. The staff can know the inside condition of feed back case 41 through the image of observing the camera shooting, and when the maize meal content of keeping apart on feed back screen cloth 42 was great, the staff can open feed back vacuum pump 44 to in time send maize meal into again in the shredded materials case 11 and carry out crushing treatment once more.

It should be noted that, the pipes mentioned in the above embodiments are all connected with valves.

In conclusion, the corn crushing device for agricultural production provided by the invention can be used for fully crushing corn kernels, the crushed corn flour has no impurity residue, the humidity is low, the product quality is high, and the storage time is long. In addition, this device degree of automation is high, and is low to staff's operation requirement, when playing reduction staff's intensity of labour effect, has accomplished to carry out reasonable optimization to manufacturing procedure, shortens processing cycle to reduction in production cost.

It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (9)

1. A corn crushing device for agricultural production is characterized by comprising a crushing unit, a drying unit and a feed back unit in sequence according to a process flow;

the crushing unit comprises a crushing box, a rotating shaft, an impurity removing mechanism, an upper crushing mechanism and a lower crushing mechanism, wherein the impurity removing mechanism, the upper crushing mechanism and the lower crushing mechanism are arranged in the crushing box;

the top of the crushing box is provided with a feeding hole and an upper insertion hole for a rotating shaft to be vertically inserted, and the bottom of the crushing box is provided with a discharging hole; the discharging opening is hinged with a material door, the material door is used for sealing the discharging opening of the crushed material box, and the material door is connected with a discharging power mechanism and can be driven by the discharging power mechanism to perform overturning motion;

the impurity removing mechanism comprises an upper material guide plate, an air supply mechanism and an air nozzle; the upper material guide plate is obliquely arranged in the material crushing box, an intermediate insertion opening for the vertical insertion of the rotating shaft is formed in the upper material guide plate, and the higher end of the upper material guide plate is positioned below one side of the material inlet of the material crushing box; the air supply mechanism is connected with the air nozzle through a pipeline and used for conveying air; the air nozzle is positioned below the other side of the feeding hole of the material crushing box and above the upper material guide plate;

the crushing unit also comprises a lifting cylinder, a crushing motor and a bearing plate; the lifting cylinder is in driving connection with the bearing plate and can drive the bearing plate to move up and down; the rotating shaft is rotatably connected to the bearing plate and supported by the bearing plate, and is connected with an output shaft of a material crushing motor and can be driven to rotate by the material crushing motor;

the material feeding mechanism comprises a material feeding screen and a material feeding sawtooth assembly; the crushed aggregate screen is arranged below the upper material guide plate, and a lower insertion hole into which the rotating shaft is vertically inserted is formed in the crushed aggregate screen; one end of the rotating shaft is positioned outside the crushed aggregates box, the other end of the rotating shaft extends downwards and sequentially passes through the upper insertion opening, the middle insertion opening and the lower insertion opening, and the rotating shaft part can be limited in a space between the crushed aggregates screen and the bottom wall of the crushed aggregates box; the upper crushing saw tooth assembly comprises a plurality of upper saw teeth arranged from top to bottom; the lower crushing mechanism comprises a plurality of lower saw teeth arranged from top to bottom, and the lower saw teeth and the upper saw teeth are sleeved on the periphery of the rotating shaft; when the lifting mechanism drives the upper saw teeth positioned at the lowest part to be close to the crushed aggregate screen, the lower saw teeth positioned at the lowest part are close to the material door;

a water storage chamber is formed at the bottom of the crushed material box and is positioned below the material door, a lower material guide plate is obliquely arranged in the water storage chamber, and the higher end of the lower material guide plate is close to the joint of the material door and a discharging power mechanism relative to the lower end of the lower material guide plate; in a natural state, the material door is in a horizontal state, and the projection of the material door on the horizontal plane is overlapped with the projection part of the lower material guide plate on the horizontal plane; a material guide cavity is formed between the lower material guide plate and the side wall of the water storage chamber, the bottom of the material guide cavity is provided with a water outlet and a material outlet, and electromagnetic valves are arranged in the water outlet and the material outlet;

the crushing unit also comprises a lifting pump and a clear water tank; a water inlet of the lift pump extends into the bottom of the water storage chamber through a pipeline, and a water outlet of the lift pump extends into the clean water tank through a pipeline; the clean water tank is provided with two water outlets, the two water outlets of the clean water tank are respectively connected with an upper water outlet pipe and a lower water outlet pipe, the water outlet end of the upper water outlet pipe extends into a space between the upper guide plate and the crushed aggregate screen, and the water outlet end of the lower water outlet pipe is arranged close to the free end of the material door;

a conveying mechanism is arranged below the material guide cavity and comprises a conveying belt, the starting end of the conveying belt is positioned below the material outlet of the material guide cavity, and the terminal end of the conveying belt is positioned outside the crushed material box; the conveyor belt is used for conveying the materials falling from the material outlet into the drying unit;

the drying unit is used for drying the crushed materials;

the corn crushing device for agricultural production further comprises a feeding mechanism, and the feeding mechanism is used for feeding the dried material into the material returning unit;

the feed back unit comprises a feed back box, a feed back screen and a feed back power mechanism; the feed back box comprises a left side plate and a right side plate, two ends of the feed back screen are respectively close to the left side plate and the right side plate, and the mesh diameter of the feed back screen is smaller than that of the crushed material screen; the left side plate and the right side plate are respectively connected with a left sliding block and a right sliding block in a sliding mode, the sliding direction of the left sliding block and the sliding direction of the right sliding block are vertical, and the left sliding block and the right sliding block are both connected with the feed back screen through springs; the feed back power mechanism comprises a feed back motor, a feed back screw rod, a left gear, a right gear and a connecting rod; the feed back screw rod is horizontally arranged, two ends of the feed back screw rod are respectively and rotatably connected to the left side plate and the right side plate, two ends of the feed back screw rod are respectively positioned on the outer sides of the left side plate and the right side plate, and the feed back screw rod can be driven to rotate by the feed back motor; the left gear and the right gear are respectively sleeved at two ends of the feed back screw rod, connecting rods are respectively connected to the left gear and the right gear in a pivot mode, the joint of each connecting rod and the left gear is located on the outer side of the central line of the left gear, the joint of each connecting rod and the right gear is located on the outer side of the central line of the right gear, and one end of each connecting rod is movably connected to the left sliding block and the right sliding block; still be connected with the feed back screw through threaded connection mode on the feed back lead screw, the feed back screw is located in the feed back incasement, be connected with the pipe clamp on the feed back screw, the pipe clamp is used for fixed feed back pipe, the feed back pipe adopts the elastic deformation material to make, the import of feed back pipe is located in the feed back incasement, and is located feed back screen cloth top, the export of feed back pipe is located in the crushed aggregates incasement, and is located between crushed aggregates screen cloth and the bin gate, be connected with the feed back vacuum pump on the feed back pipe.

2. The corn smashing device for agricultural production according to claim 1, wherein the blanking power mechanism comprises a blanking rod and a movable block, two ends of the blanking rod are respectively hinged to the material door and the movable block, the movable block is located below the material door, and the movable block is connected with the first power mechanism or the second power mechanism to move horizontally; the first power mechanism comprises a telescopic rod and a blanking cylinder, the movable block is connected to the telescopic end of the telescopic rod, and the telescopic end of the telescopic rod is connected with the piston end of the blanking cylinder; the second power mechanism comprises a discharging screw, a discharging screw rod and a discharging motor, the movable block is connected to the discharging screw rod, the discharging screw rod is connected to the discharging screw rod in a threaded connection mode, and the discharging screw rod is horizontally arranged and connected with an output shaft of the discharging motor.

3. The corn smashing device for agricultural production according to claim 1, wherein the drying unit comprises a drying box, a belt inlet and a belt outlet are formed in the drying box, the belt inlet and the belt outlet are used for allowing a conveying belt to horizontally penetrate in and out respectively, a drying pipe is arranged in the drying box, the axial direction of the drying pipe is consistent with the conveying direction of the conveying belt, a plurality of air outlets are formed in the drying pipe along the axial direction of the drying pipe, the drying pipe is connected with the air supply mechanism through a pipeline, an electric heating box is connected to the pipeline between the drying pipe and the air supply mechanism, an inlet of the electric heating box is connected with the air supply mechanism, the electric heating box is provided with two outlets, one outlet is connected with the drying pipe, and the other outlet extends into a space between the feed back screen and the material door through a pipeline.

4. The corn stover for agricultural production of claim 1, wherein the feed mechanism comprises a bin and a feed vacuum pump; the feed box is arranged close to the terminal of the conveying belt, an electric heating pipe is arranged in the feed box, an obliquely arranged scraping plate is arranged between the conveying belt and the feed box, the higher end of the scraping plate is abutted against the conveying belt, and the lower end of the scraping plate is positioned in the feed box; the feed box with through material pipe intercommunication between the feed back box, the export of material pipe is located feed back screen cloth top, the pay-off vacuum pump is connected on the material pipe.

5. The corn smashing device for agricultural production according to claim 1, wherein a separation plate is further arranged in the water storage chamber, the separation plate is inverted L-shaped, a clear water cavity is formed between the separation plate and the side wall and the bottom wall of the water storage chamber in a matched mode, a water inlet of the lifting pump extends into the clear water cavity through a pipeline, and a filter screen is clamped on the separation plate or a mesh hole for liquid to flow into is formed in the separation plate in a penetrating mode.

6. The corn smashing device for agricultural production according to claim 1, wherein a rubber pad is connected to the upper surface of the material door, and a clamping groove matched with the bottom of the crushed aggregates box in shape is formed in the rubber pad.

7. The corn smashing device for agricultural production according to claim 2, wherein a pressure sensor or a proximity switch is connected to the lower surface of the free end of the material door, and when the material door is driven by the blanking power mechanism to move to the stroke end of the material door, the free end of the material door is lapped on the material guide plate.

8. The corn smashing device for agricultural production according to claim 1, wherein a driving gear is sleeved on the periphery of an output shaft of the feed back motor, and the driving gear is meshed with the left gear or the right gear; the left side board and the right side board are both vertically provided with sliding grooves, and the left sliding block and the right sliding block are respectively connected in the two sliding grooves in a matching manner.

9. The corn smashing device for agricultural production according to claim 1, wherein a viewing window is mounted at the top of the return box, a camera is arranged on the outer side of the viewing window, and the camera is used for shooting an image of the part where the return screen is located through the viewing window.

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