CN116174299A - Positive and negative pressure sorting impurity removing equipment for grain storage in granary - Google Patents

Abstract

The invention discloses a grain bin grain storage positive and negative pressure sorting impurity removing device, which relates to the technical field of grain impurity removing, and comprises an impurity removing outer cylinder and a cover plate which is detachably connected to the top of the impurity removing outer cylinder, wherein exhaust fans and dust treatment cylinders are arranged on two sides of the top end of the impurity removing outer cylinder, air outlets of the exhaust fans are communicated with the dust treatment cylinders, dust suction assemblies which extend to the top end inside the impurity removing outer cylinder are connected to air suction inlets of the exhaust fans, a grain feeding through pipe is fixedly connected to the middle of the cover plate, a feed hopper is arranged at the top end of the grain feeding through pipe, a conical dust outlet net is connected to the bottom end of the grain feeding through pipe, and grid inner covers which are supported inside the impurity removing outer cylinder are coaxially and fixedly connected to the bottom of the conical dust outlet net. The invention accelerates the impurity removal treatment of grains in the impurity removal outer cylinder, so that light impurities such as dust, shell materials and the like in the grains can be quickly absorbed by the exhaust fan and discharged after being treated by the dust treatment cylinder, and can automatically clear blockage, thereby realizing the high-efficiency treatment of the impurities and improving the treatment efficiency.

Description

Positive and negative pressure sorting impurity removing equipment for grain storage in granary

Technical Field

The invention relates to the technical field of grain impurity removal, in particular to positive and negative pressure sorting impurity removal equipment for grain storage in a granary.

Background

Grain is the main source of heat required by the human body. After the grain is harvested, the grain needs to be processed, then the processed grain is stored in a warehouse, and the grain crops need to be subjected to impurity removal and screening before entering the warehouse for warehouse entry, so that light impurities such as shell materials, dust and the like mixed in the grain crops are removed.

At present, when the traditional impurity removing equipment is used for treating light impurities such as dust and shell materials in grains, the grains are generally lifted and then blown, so that the blown grains are separated from the light impurities, and then the light impurities are collected; when the filter screen or other filter devices are used for filtering sundries, blockage is easy to occur, the filtering effect is reduced, and the working strength of cleaning and filtering is increased.

Therefore, the invention needs to invent a grain bin grain positive and negative pressure sorting impurity removing device to solve the technical problems.

Disclosure of Invention

The invention provides positive and negative pressure sorting and impurity removing equipment for grain stored in a granary, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the utility model provides a granary stores up grain positive and negative pressure and selects separately edulcoration equipment, includes the edulcoration urceolus and can dismantle the apron of connection at edulcoration urceolus top, air exhauster and dust treatment section of thick bamboo are installed to the top both sides of edulcoration urceolus, the air outlet and the dust treatment section of thick bamboo intercommunication of air exhauster, the inlet scoop of air exhauster is connected with the dust absorption subassembly that extends to the inside top of edulcoration urceolus, the centre fixedly connected with of apron advances the grain siphunculus to install the feeder hopper on the top of advancing the grain siphunculus, be connected with the toper at the bottom of advancing the grain siphunculus and go out the dirt net, the bottom coaxial fixedly connected with of toper out the dirt net supports the check that keeps off the inner cover in the edulcoration urceolus is inside, be equipped with in the check and keep off the grain air inlet net, it is equipped with the telescopic link to keep off grain air inlet net bottom, the telescopic link other end and supporting disk are connected, it is equipped with the flexible band to keep off grain air inlet net and the bottom, be equipped with multiunit electro-magnet in the flexible band, the toper goes out on the dirt net and has seted up the spread on the net on the toper, limit groove is seted up on the piece upper portion to be the toper and is the toper to be the toper and is equipped with the stopper in the stopper and clean piece that the inside dust is laminated.

Preferably, the inner part of the grid inner cover is fixedly connected with a supporting underframe, a motor is arranged on the bottom surface of the supporting underframe, a rotating shaft connected with the motor is arranged on the top surface of the supporting underframe, and the supporting disc is fixed on the rotating shaft; the outer side of the rotating shaft is provided with a feeding auger positioned in the grain feeding through pipe, a centrifugal disc positioned below the grain feeding through pipe, a grain blocking air inlet net positioned in the conical dust outlet net, and a speed reducing assembly and a blower fan blade arranged below the grain blocking air inlet net from top to bottom in sequence.

Preferably, the bottom of the impurity removal outer cylinder is arranged in a conical shape, a grain outlet is arranged at the bottom end of the conical shape, and a support plate is fixedly connected to the inner part of the impurity removal outer cylinder, which is close to the conical part.

Preferably, the top surface of the impurity removal outer cylinder and the top surface of the support plate are both provided with annular grooves, the bottom surface of the cover plate is protruded with an inserting plate which is anastomosed in the annular groove on the top surface of the impurity removal outer cylinder, and the bottom end of the grid inner cover is anastomosed and inserted in the annular groove on the top surface of the support plate.

Preferably, the feeding hopper, the grain feeding through pipe, the conical dust outlet net and the grid inner cover are coaxially and fixedly connected in pairs, and the rotating shaft and the grain feeding through pipe are coaxially arranged.

Preferably, the diameter of the mesh of the conical dust outlet net is larger than that of the grain blocking air inlet net, and the grain blocking air inlet net is conical and has a conical angle and a height smaller than those of the conical dust outlet net.

Preferably, the cleaning block is made of ferromagnetic materials, and corresponds to the discharge chute when being positioned at the initial position.

Preferably, the speed reducing assembly comprises a speed reducing fluted disc coaxially arranged with the rotating shaft, a sun wheel fixedly sleeved on the outer side of the rotating shaft and a plurality of planet gears connected with the sun wheel and the speed reducing fluted disc, wherein the rotating shaft positioned on the upper side and the lower side of the speed reducing fluted disc is in two sections, one section is fixedly connected with the sun wheel, and the other section is fixedly connected with the speed reducing fluted disc coaxially.

Preferably, a dust inlet pipe connected with an exhaust fan is arranged on one side of the dust treatment cylinder, a dust screen is arranged at the top of the dust treatment cylinder, and a dust outlet pipe is connected with the bottom end of the dust treatment cylinder.

Preferably, the dust collection assembly comprises a plurality of exhaust pipes inserted into the top end of the outer side of the impurity removal outer cylinder and an annular air pipe positioned outside the impurity removal outer cylinder and connected with the exhaust pipes, the exhaust pipes are positioned in the impurity removal inner cylinder and are internally connected with air nozzles, and the outer sides of the annular air pipes are communicated with the exhaust openings of the exhaust fans through pipelines.

Compared with the prior art, the invention has the following advantages:

1. according to the invention, the grain feeding through pipe, the conical dust outlet net, the grid inner cover, the motor, the rotating shaft and the blower fan blade are arranged in the impurity removing outer cylinder, and the exhaust fan, the dust treatment cylinder and the dust collection component are arranged on the outer side of the impurity removing outer cylinder, so that the impurity removing process of grains entering the impurity removing outer cylinder can be realized by negative pressure exhaust of the exhaust fan and positive pressure air blowing of the blower fan blade, the impurity removing process of the grains in the impurity removing outer cylinder is accelerated, and light impurities such as dust, shell and the like in the grains can be quickly absorbed by the exhaust fan and are discharged after being processed by the dust treatment cylinder, so that the efficient processing of the impurities is realized, and the problems of mixing the grains with the impurities and dust diffusion are effectively avoided while the processing efficiency is improved.

2. According to the invention, the feeding auger, the centrifugal disc, the grain blocking air inlet net and the speed reducing assembly are arranged on the rotating shaft, so that feeding can be more convenient when the motor drives the fan blades to work, the problem of insufficient impurity removal caused by feeding blockage and excessive disposable feeding can be avoided, meanwhile, grains entering the conical dust outlet net are thrown outwards by the centrifugal disc, the grains scattered on the grain blocking air inlet net through the rotation of the centrifugal disc can be further dispersed under the action of centrifugal force by the rotation of the conical dust outlet net, the grain layer can be more uniform and thinner, and the grains above the grains can be conveniently separated by the positive pressure air passing through the grain blocking air inlet net, so that the treatment efficiency of dust, shell materials and other impurities in the grains is improved.

3. According to the invention, through the mutual matching of the telescopic rod, the electromagnet, the cleaning block, the grain blocking air inlet net, the conical dust outlet net and other parts, on one hand, the telescopic rod is controlled to control the downward moving height of the grain blocking air inlet net, so that the grain blocking air inlet net of the elastic net structure is changed from a positive conical structure to a reverse conical structure, and as the grain blocking air inlet net is repeatedly stretched, the aperture above the grain blocking air inlet net is repeatedly changed, and the cleaning of sundries blocked on the grain blocking air inlet net can be completed; on the other hand, the grain blocking air inlet net is driven by the telescopic rod to repeatedly move up and down to repeatedly deform into an inverted cone shape and restore the forward cone structure, and the grain blocking air inlet net can drive the cone-shaped dust outlet net to vibrate so as to promote sundries blocked on the cone-shaped dust outlet net to be separated from the cone-shaped dust outlet net.

4. After the electromagnet is magnetically adsorbed with the cleaning block, the grain blocking air inlet net can drive the cleaning block magnetically adsorbed with the electromagnet to rotate through the flexible belt at the lower end part, so that the cleaning block rotates along the inner side wall of the conical dust outlet net under the cooperation of the limiting groove and the limiting block, the straw-shaped blockage clamped on the conical dust outlet net is cleaned, the effect is obvious, the manual cleaning strength is reduced, and the equipment sorting effect is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is an overall cross-sectional view of the present invention;

FIG. 3 is a schematic view of the structure of the feed-through pipe and the conical dust outlet net of the invention;

FIG. 4 is a schematic diagram of a deceleration assembly according to the present invention;

FIG. 5 is a schematic view of the dust treating cylinder of the present invention;

FIG. 6 is a schematic view of the structure of the annular duct of the present invention;

FIG. 7 is a cross-sectional view of the structure of the cone-shaped dust net of the invention;

FIG. 8 is a schematic diagram of the mechanism at A in FIG. 2;

fig. 9 is a schematic diagram of the mechanism at B in fig. 7.

In the figure: 1. a impurity removing outer cylinder; 2. a cover plate; 3. a feed hopper; 4. an annular air pipe; 5. an exhaust fan; 6. a dust treatment cylinder; 7. a grain outlet; 8. a grain feeding through pipe; 9. a conical dust outlet net; 10. a grid inner cover; 11. a support chassis; 12. a motor; 13. blower fan blades; 14. a deceleration assembly; 1401. a reduction fluted disc; 1402. a sun gear; 1403. a planet wheel; 15. a grain blocking air inlet net; 16. a rotation shaft; 17. a feeding auger; 18. a dust inlet pipe; 19. a dust outlet pipe; 20. a dust screen; 21. an exhaust tube; 22. a tuyere; 23. an electromagnet; 24. a discharge chute; 25. a limit groove; 26. a limiting block; 27. a cleaning block; 28. a telescopic rod; 29. and a support plate.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Example 1

Referring to fig. 1-2, a grain bin grain storage positive and negative pressure sorting impurity removing device comprises an impurity removing outer cylinder 1 and a cover plate 2 detachably connected to the top of the impurity removing outer cylinder 1, wherein the upper end of the impurity removing outer cylinder 1 is cylindrical, the lower end of the impurity removing outer cylinder is conical, supporting legs for supporting are arranged on the outer side of the conical lower end, an exhaust fan 5 and a dust treatment cylinder 6 are arranged on two sides of the top end of the impurity removing outer cylinder 1, a supporting plate fixed to the side face of the impurity removing outer cylinder 1 is arranged at the bottom of the exhaust fan 5, and the exhaust fan 5 is fixed to the supporting plate through two supporting rods. The air outlet and the dust treatment section of thick bamboo 6 intercommunication of air exhauster 5, the inlet scoop of air exhauster 5 is connected with the dust absorption subassembly that extends to the inside top of edulcoration urceolus 1, the dust absorption subassembly produces negative pressure through the air exhauster 5 convulsions, can absorb light debris such as dust, shell material that fly away in the edulcoration urceolus 1, the centre fixedly connected with of apron 2 advances grain siphunculus 8, and install feeder hopper 3 on the top of advancing grain siphunculus 8, be connected with toper play dirt net 9 in the bottom of advancing grain siphunculus 8, communicate each other between advancing grain siphunculus 8, feeder hopper 3 and the toper play dirt net 9. The bottom of the conical dust outlet net 9 is coaxially and fixedly connected with a grid inner cover 10 supported in the impurity removing outer cylinder 1, the inner part of the grid inner cover 10 is fixedly connected with a supporting underframe 11, the supporting underframe 11 consists of a middle chassis and a plurality of round rods fixed on the outer side of the chassis, the other ends of the round rods are fixed on the inner wall of the grid inner cover 10, a motor 12 is arranged on the bottom surface of the supporting underframe 11, a rotating shaft 16 connected with the motor 12 is arranged on the top surface of the supporting underframe 11, and the rotating shaft 16 is rotatably arranged on the supporting underframe 11 through a bearing; the motor 12 can drive the rotation of the rotation shaft 16, and a feeding auger 17 positioned in the grain feeding through pipe 8, a centrifugal disk positioned below the grain feeding through pipe 8, a grain blocking air inlet net 15 positioned in the conical dust outlet net 9, a speed reducing assembly 14 arranged below the grain blocking air inlet net 15 and a blower fan blade 13 are sequentially arranged on the outer side of the rotation shaft 16 from top to bottom. The blowing fan blade 13 can generate positive pressure wind power, so that the positive pressure wind power passes through the grain blocking air inlet net 15 to sort sundries in grains. The bottom of the grain-blocking air inlet net 15 is provided with a telescopic rod 28, the other end of the telescopic rod 28 is connected with a supporting disc 29, and the supporting disc 29 is fixed on the rotating shaft 16; when the rotary shaft 16 rotates, the feeding auger 17 and the centrifugal disk are driven to rotate, so that grains fed through the feeding auger 16 and centrifugally separated through the centrifugal disk are uniformly scattered on the grain blocking air inlet net 15. Meanwhile, as the supporting disc 29 is arranged on the rotating shaft 16, in the process that the rotating shaft 16 drives the supporting disc 29 to rotate, the supporting disc 29 can drive the grain blocking air inlet net 15 to rotate through the telescopic rod 28, and in the process that the grain blocking air inlet net 15 rotates, grains scattered onto the grain blocking air inlet net 15 through the centrifugal disc rotation can be further scattered under the action of centrifugal force, so that grain layers are more uniform and thinner, and the grains above the grain blocking air inlet net 15 can be conveniently subjected to impurity removal and sorting through positive pressure air passing through the grain blocking air inlet net 15.

The speed reducing assembly 14 is used for enabling rotation speeds of rotating shafts 16 at the upper end and the lower end of the speed reducing assembly to be inconsistent, positive pressure wind with high pressure is generated easily when the blower fan blades 13 rotate at high speed, and the feeding auger 17 rotates at low speed, so that continuous and uniform feeding is facilitated, the phenomenon that the number of discharged materials is too small each time during high-speed operation is avoided, and grain sorting time is shortened.

Referring to fig. 1-2, the tapered bottom end of the impurity removal outer tub 1 is provided with a grain outlet 7 and an air inlet, and may be provided with a mouth stopper to seal the grain outlet 7, and when in use, the sorted grains are opened and discharged, and a support plate is fixedly connected to the inside of the impurity removal outer tub 1 at a position close to the tapered portion, and is used for supporting the grid inner cover 10.

Referring to fig. 2-3, the top surface of the impurity removing outer cylinder 1 and the top surface of the support plate are both provided with annular grooves, the bottom surface of the cover plate 2 is protruded with a plugboard which is anastomosed in the annular groove on the top surface of the impurity removing outer cylinder 1, so that the cover plate 2 and the impurity removing outer cylinder 1 are tightly connected, meanwhile, the disassembly is convenient, the bottom end of the grid inner cover 10 is anastomosed and inserted in the annular groove on the top surface of the support plate, and the whole fixation of the cover plate 2 is realized by matching with the clamping connection of the cover plate 2.

Referring to fig. 3, the feeding hopper 3, the grain feeding through pipe 8, the conical dust outlet net 9 and the grid inner cover 10 are coaxially and fixedly connected in pairs, and the rotating shaft 16 and the grain feeding through pipe 8 are coaxially arranged to ensure that the feeding auger 17 can be driven to coaxially rotate in the grain feeding through pipe 8 when the rotating shaft 16 rotates at the middle position, and meanwhile, the outer wall of the feeding auger 17 is attached to the grain feeding through pipe 8.

Referring to fig. 2-3, the diameter of the holes of the cone-shaped dust outlet net 9 is larger than that of the grain blocking air inlet net 15, so that the cone-shaped dust outlet net 9 and the grain blocking air inlet net 15 can both block grains and simultaneously enable sundries such as dust, shell materials and the like to pass through the cone-shaped dust outlet net 9 more conveniently, the grain blocking air inlet net 15 is cone-shaped, the cone-shaped angle and the height are smaller than those of the cone-shaped dust outlet net 9, the cone-shaped angle refers to the inner angle degree of the vertical section, and the time for grains thrown off from the centrifugal disc to reach the grain blocking air inlet net 15 is longer, so that the blowing effect of the blowing fan blades 13 is better.

Referring to fig. 2 to 3, in order to prevent the grains from contacting with the blower fan blade after removing the impurities, the diameter of the blower fan blade 13 is smaller than the diameter of the bottom end of the grain-blocking air intake net 15, where the diameter of the blower fan blade 13 refers to the size from the side edge of the blower fan blade 13 to the rotation shaft 16.

Referring to fig. 4, in order to make the rotation speeds of the rotating shafts 16 at the upper and lower ends of the speed reducing assembly 14 inconsistent, further, the speed reducing assembly 14 includes a speed reducing fluted disc 1401 coaxially disposed with the rotating shaft 16, a sun gear 1402 fixedly sleeved on the outer side of the rotating shaft 16, and a plurality of planetary gears 1403 connecting the sun gear 1402 and the speed reducing fluted disc 1401, a tripod is sleeved on the shaft between the plurality of planetary gears 1403, and the tripod is rotatably connected on the outer side of the rotating shaft 16, so that when the sun gear 1402 rotates, the planetary gears 1403 do not rotate the speed reducing fluted disc 1401 outside, wherein the rotating shafts 16 at the upper and lower sides of the speed reducing fluted disc 1401 are in two sections, one section is fixedly connected with the sun gear 1402, and the other section is fixedly connected with the speed reducing fluted disc 1401 coaxially, and further, under the cooperation of the speed reducing assembly 14, the rotation speeds of the rotating shafts 16 at the upper and lower ends are different.

Referring to fig. 5, a dust inlet pipe 18 connected with an exhaust fan 5 is arranged on one side of a dust treatment barrel 6, the dust inlet pipe 18 is connected with the exhaust fan 5 through a flange, a dust screen 20 is arranged at the top of the dust treatment barrel 6, dust sucked into the dust treatment barrel 6 is filtered, a dust outlet pipe 19 is connected to the bottom end of the dust treatment barrel 6, and the dust outlet pipe 19 is externally connected with a pipeline for receiving and concentrating dust during operation.

Referring to fig. 6, the dust collection assembly comprises a plurality of exhaust pipes 21 inserted into the top end of the outer side of the impurity removal outer cylinder 1 and an annular air pipe 4 positioned outside the impurity removal outer cylinder 1 and connected with the plurality of exhaust pipes 21, wherein the plurality of exhaust pipes 21 are positioned in the impurity removal inner cylinder and are connected with air nozzles 22, and the outer side of the annular air pipe 4 is communicated with the exhaust openings of the exhaust fans 5 through pipelines, so that the exhaust of the exhaust fans 5 to the plurality of exhaust pipes 21 is realized, and the exhaust efficiency is accelerated.

When removing sundries such as shell materials and dust in grains, firstly, the motor 12 and the exhaust fan 5 are started, grains are poured from the feed hopper 3, enter the grain feeding through pipe 8 through the feed hopper 3, are uniformly fed into the centrifugal disk by the feeding auger 17 in the grain feeding through pipe 8, and are thrown out by the centrifugal disk along with the rotation of the rotating shaft 16, so that the grains can fall in a dispersed manner and are uniformly distributed above the grain blocking air inlet net 15. Meanwhile, in the process that the motor 12 drives the rotating shaft 16 to rotate, the rotating shaft 16 drives the blowing fan blades 13 to rotate, the blowing fan blades 13 upward blow to generate positive pressure air, the positive pressure air enters the conical dust outlet net 9 through the grain blocking air inlet net 15, light sundries such as dust and shell materials in grains are blown up, meanwhile, the exhaust fan 5 works to generate negative pressure air, the annular air pipe 4 is used for exhausting the sundries such as dust and shell materials to the plurality of exhaust pipes 21, the sundries such as dust and shell materials fly out of the conical dust outlet net 9 and are finally sucked by the air nozzle 22, and then the exhaust fan 5 discharges the sucked sundries such as dust and shell materials into the dust treatment cylinder 6, and the sundries are blocked by the dustproof net 20 and finally drop from the dust outlet pipe 19; the processed grains are blocked by the blocking air inlet pipe and fall into the blocking inner cover 10, and finally fall from the grain outlet 7 of the impurity removing outer cylinder 1, thus finishing grain impurity removal and collection.

Example two

After the device is used for a long time, sundries or grains can be blocked on the conical dust outlet net 9 and the grain blocking air inlet net 15, and the sorting effect of the device on the grains is affected, so that the device is improved according to the mode described in the embodiment.

As shown in fig. 7-9, a telescopic rod 28 is arranged at the bottom of the grain-blocking air inlet net 15, the other end of the telescopic rod 28 is connected with a supporting disc 29, and the supporting disc 29 is fixed on the rotating shaft 16; the grain blocking air inlet net 15 adopts an elastic net, a flexible belt is arranged at the bottom end of the grain blocking air inlet net, a plurality of groups of electromagnets 23 are arranged in the flexible belt, a plurality of groups of discharge grooves 24 are formed in the conical dust outlet net 9, limit grooves 25 are formed in the upper portion of the conical dust outlet net 9, the limit grooves 25 are annularly distributed on the conical dust outlet net 9, limiting blocks 26 are arranged in the limit grooves 25, the other ends of the limiting blocks 26 are connected with cleaning blocks 27, the cleaning blocks 27 are attached to the inner sides of the conical dust outlet net 9, the cleaning blocks 27 are made of ferromagnetic materials, and the cleaning blocks 27 correspond to the discharge grooves 24 when located at the initial positions.

When the device is blocked on the conical dust outlet net 9 and the grain blocking air inlet net 15 after long-time use, the telescopic rod 28 is controlled by the control unit to extend and drive the grain blocking air inlet net 15 to move upwards, and the flexible belt at the bottom end of the grain blocking air inlet net 15 is enabled to collide with the cleaning block 27 after the telescopic rod 28 drives the grain blocking air inlet net 15 to move upwards to a preset height because the conical angle and the height of the grain blocking air inlet net 15 are smaller than the conical dust outlet net 9. After the flexible belt at the bottom end of the grain blocking air inlet net 15 is abutted against the cleaning block 27, the electromagnet 23 is controlled to be electrified and magnetically adsorbed with the cleaning block 27. Then the telescopic rod 28 is controlled to shrink and drive the grain blocking air inlet net 15 to move downwards (at the moment, the motor 12 stops working), the height of the grain blocking air inlet net 15 moving downwards is controlled by controlling the telescopic rod 28, so that the grain blocking air inlet net 15 of the elastic net structure is changed into an inverted cone structure from a forward cone structure (the grain blocking air inlet net 15 of the elastic net structure is made of polyurethane, and on the basis of guaranteeing wear resistance and aperture ratio, the grain blocking air inlet net 15 also has certain strength, dust removal can be guaranteed when in the forward cone structure, and the grain blocking air inlet net 15 receives downward stretching force, and is changed into an inverted cone structure due to elasticity of the grain blocking air inlet net 15 in the process, and sundries blocked on the grain blocking air inlet net 15 can fall off and be separated, so that the wind blown by the blowing fan blades 13 can not penetrate through the grain blocking air inlet net 15 to remove impurities. Meanwhile, the telescopic rod 28 drives the grain blocking air inlet net 15 to repeatedly move up and down to repeatedly deform into an inverted cone shape and restore the normal cone structure, and the grain blocking air inlet net 15 can drive the cone-shaped dust outlet net 9 to vibrate so as to promote sundries blocked on the cone-shaped dust outlet net 9 to be separated from the cone-shaped dust outlet net 9, thereby preventing the problem that the sundries cannot be discharged due to the sundries blocking the cone-shaped dust outlet net 9 after the cone-shaped dust outlet net 9 is used for a long time.

In addition, since the impurities in the grains include not only the grain bran, dust and other granular impurities, but also the rod-shaped impurities such as straw, when the rod-shaped impurities enter between the conical dust outlet net 9 and the grain blocking air inlet net 15 through the feed hopper 3, the rod-shaped impurities are blown to the surface of the conical dust outlet net 9 and cause blockage under the wind force of the blowing fan blades 13, and even though the conical dust outlet net 9 is vibrated continuously, the blocked straw-shaped impurities are still difficult to discharge. Therefore, when the rod-shaped sundries need to be cleaned, the control unit controls the telescopic rod 28 to extend and drive the grain blocking air inlet net 15 to move upwards, and the telescopic rod 28 drives the grain blocking air inlet net 15 to move upwards to a preset height, so that the flexible belt at the bottom end of the grain blocking air inlet net 15 is abutted against the cleaning block 27. After the flexible belt at the bottom end of the grain blocking air inlet net 15 is abutted against the cleaning block 27, the electromagnet 23 is controlled to be electrified and magnetically adsorbed with the cleaning block 27. Then, when the electromagnet 23 and the cleaning block 27 are kept to be magnetically adsorbed, the motor 12 is started to work, the motor 12 drives the supporting disc 29 to rotate through the rotating shaft 16, the supporting disc 29 drives the grain blocking air inlet net 15 to rotate through the telescopic rod 28, and the grain blocking air inlet net 15 drives the cleaning block 27 magnetically adsorbed with the grain blocking air inlet net through the flexible belt at the lower end part to rotate, so that the cleaning block 27 rotates along the inner side wall of the conical dust outlet net 9 under the cooperation of the limiting groove 25 and the limiting block 26; during the rotation, the cleaning block 27 can scrape off and collect the rod-shaped sundries blocked on the conical dust outlet net 9, the scraped part of straw-shaped sundries pass through the conical dust outlet net 9 and are discharged, the straw-shaped sundries which are not discharged from the conical dust outlet net 9 can be collected to the discharge chute 24 along with the cleaning block, the conical dust outlet net 9 is discharged from the discharge chute 24, and then the rod-shaped sundries are moved to the outer side of the grid inner cover 10 under the wind force of the blower fan blade 13 and the exhaust fan 5, so that the cleaning of the rod-shaped sundries is completed. After the conical dust removal net 9 is cleaned, the cleaning block 27 is driven to the initial position to seal the discharge chute 24, so that the conical dust removal net 9 is ensured to remove dust normally.

In summary, through the mutual matching of the telescopic rod 28, the electromagnet 23, the cleaning block 27, the grain blocking air inlet net 15, the conical dust outlet net 9 and other components, on one hand, the telescopic rod 28 is controlled to control the downward moving height of the grain blocking air inlet net 15, so that the grain blocking air inlet net 15 with the elastic net structure is changed from a forward conical structure to an inverse conical structure, and as the grain blocking air inlet net 15 is repeatedly stretched, the aperture above the grain blocking air inlet net 15 is repeatedly changed, and the cleaning of sundries blocked on the grain blocking air inlet net 15 can be completed; on the other hand, in the process of repeatedly moving up and down to repeatedly deform into an inverted cone shape and recovering a positive cone structure by driving the grain blocking air inlet net 15 through the telescopic rod 28, the grain blocking air inlet net 15 can drive the cone-shaped dust outlet net 9 to vibrate so as to promote the separation of sundries blocked on the cone-shaped dust outlet net 9 and the cone-shaped dust outlet net 9; in the third aspect, after the electromagnet 23 and the cleaning block 27 are magnetically adsorbed, the grain blocking air inlet net 15 can drive the cleaning block 27 magnetically adsorbed with the lower end part to rotate through the flexible belt at the lower end part, so that the cleaning block 27 rotates along the inner side wall of the conical dust outlet net 9 under the cooperation of the limiting groove 25 and the limiting block 26, the straw-shaped blockage clamped on the conical dust outlet net 9 is cleaned, the effect is obvious, the manual cleaning strength is reduced, and the equipment sorting effect is improved.

The present invention is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present invention and the inventive concept thereof, can be replaced or changed within the scope of the present invention.

Claims (10)

1. The utility model provides a granary stores up grain positive and negative pressure and selects separately edulcoration equipment, includes the edulcoration urceolus and can dismantle the apron of connection at edulcoration urceolus top, a serial communication port, air exhauster and dust treatment section of thick bamboo are installed to the top both sides of edulcoration urceolus, the air outlet and the dust treatment section of thick bamboo intercommunication of air exhauster, the inlet scoop of air exhauster is connected with the dust absorption subassembly that extends to the inside top of edulcoration urceolus, the centre fixedly connected with of apron advances the grain siphunculus to install the feeder hopper on the top of advancing the grain siphunculus, be connected with the toper at the bottom of advancing the grain siphunculus and go out the dirt net, the bottom coaxial fixedly connected with of toper goes out the dirt net supports the check inner cover in edulcoration urceolus inside, be equipped with in the check and keep off the grain air inlet net, it is equipped with the telescopic link to keep off grain air inlet net bottom, the telescopic link other end is connected with the supporting disk, it adopts the elastic network and the bottom to be equipped with the multiunit electro-magnet to keep off the grain air inlet net, the discharge chute has been seted up on the toper dust outlet net upper portion, the toper is spacing groove is the toper and is the toper is the annular and is located the spacing piece that the clean piece is equipped with the clean piece in the piece on the side of the side.

2. The positive and negative pressure sorting and impurity removing device for grain storage in a granary according to claim 1, wherein a supporting underframe is fixedly connected inside the grid inner cover, a motor is arranged on the bottom surface of the supporting underframe, a rotating shaft connected with the motor is arranged on the top surface of the supporting underframe, and the supporting disc is fixed on the rotating shaft; the outer side of the rotating shaft is provided with a feeding auger positioned in the grain feeding through pipe, a centrifugal disc positioned below the grain feeding through pipe, a grain blocking air inlet net positioned in the conical dust outlet net, and a speed reducing assembly and a blower fan blade arranged below the grain blocking air inlet net from top to bottom in sequence.

3. The grain bin grain storage positive and negative pressure sorting impurity removing equipment according to claim 1, wherein the bottom of the impurity removing outer cylinder is arranged in a conical shape, a grain outlet is arranged at the bottom end of the conical shape, and a support plate is fixedly connected to the inner part of the impurity removing outer cylinder, which is close to the conical part.

4. The grain storage positive and negative pressure sorting and impurity removing device of claim 3, wherein the top surface of the impurity removing outer cylinder and the top surface of the support plate are both provided with annular grooves, the bottom surface of the cover plate is protruded with a plugboard which is anastomosed in the annular groove on the top surface of the impurity removing outer cylinder, and the bottom end of the grid inner cover is anastomosed and inserted in the annular groove on the top surface of the support plate.

5. The grain bin grain storage positive and negative pressure sorting and impurity removing device according to claim 2, wherein the feeding hopper, the grain feeding through pipe, the conical dust outlet net and the grid inner cover are fixedly connected coaxially, and the rotating shaft and the grain feeding through pipe are coaxially arranged.

6. The grain bin grain positive and negative pressure sorting and impurity removing device according to claim 5, wherein the diameter of the mesh of the conical dust outlet net is larger than that of the grain blocking air inlet net, and the grain blocking air inlet net is conical, and the conical angle and the height of the grain blocking air inlet net are smaller than those of the conical dust outlet net.

7. The positive and negative pressure sorting and impurity removing device for grain storage in a granary of claim 1, wherein the cleaning block is made of ferromagnetic materials, and corresponds to the discharge chute when the cleaning block is located at an initial position.

8. The grain bin grain storage positive and negative pressure sorting and impurity removing device according to claim 2, wherein the speed reducing assembly comprises a speed reducing fluted disc coaxially arranged with the rotating shaft, a sun wheel fixedly sleeved on the outer side of the rotating shaft, and a plurality of planet wheels connected with the sun wheel and the speed reducing fluted disc, wherein the rotating shaft positioned on the upper side and the lower side of the speed reducing fluted disc is in two sections, one section is fixedly connected with the sun wheel, and the other section is fixedly connected with the speed reducing fluted disc coaxially.

9. The grain bin grain positive and negative pressure sorting and impurity removing device according to claim 1, wherein one side of the dust treatment cylinder is provided with a dust inlet pipe connected with an exhaust fan, the top of the dust treatment cylinder is provided with a dust screen, and the bottom end of the dust treatment cylinder is connected with a dust outlet pipe.

10. The grain bin grain storage positive and negative pressure sorting and impurity removing device according to claim 1, wherein the dust collection assembly comprises a plurality of exhaust pipes inserted into the top end of the outer side of the impurity removing outer cylinder and an annular air pipe positioned outside the impurity removing outer cylinder and connected with the exhaust pipes, the exhaust pipes are positioned in the impurity removing inner cylinder and are internally connected with air nozzles, and the outer sides of the annular air pipes are communicated with the exhaust openings of the exhaust fans through pipelines.

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