WO2019091335A1 - 先清大杂的网带平回筛及其粮食除杂方法 - Google Patents

先清大杂的网带平回筛及其粮食除杂方法 Download PDF

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Publication number
WO2019091335A1
WO2019091335A1 PCT/CN2018/113573 CN2018113573W WO2019091335A1 WO 2019091335 A1 WO2019091335 A1 WO 2019091335A1 CN 2018113573 W CN2018113573 W CN 2018113573W WO 2019091335 A1 WO2019091335 A1 WO 2019091335A1
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Prior art keywords
screen
mesh
small
sieve
mesh belt
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PCT/CN2018/113573
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English (en)
French (fr)
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刘全义
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刘全义
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Publication of WO2019091335A1 publication Critical patent/WO2019091335A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • B07B1/36—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro in more than one direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/10—Screens in the form of endless moving bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/4663—Multi-layer screening surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/50—Cleaning
    • B07B1/52—Cleaning with brushes or scrapers
    • B07B1/522—Cleaning with brushes or scrapers with brushes
    • B07B1/524—Cleaning with brushes or scrapers with brushes the brushes being rotating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/50—Cleaning
    • B07B1/54—Cleaning with beating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B2201/00—Details applicable to machines for screening using sieves or gratings
    • B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens

Definitions

  • the invention relates to a large-scale grain cleaning and cleaning device, in particular to an ultra-large grain cleaning and impurity removing device for removing large, medium and small impurities with an processing capacity of 100-500 tons per hour.
  • the traditional equipment for handling large miscellaneous materials is mainly mesh belt screen and drum screen.
  • the output of mesh belt screen is generally 100-500t/h, and the drum screen is 50. -150t/h, the equipment for processing small and medium miscellaneous is mainly vibrating screen and rotary screen.
  • the output is generally 10-50t/h, and the medium and small miscellaneous screen with the processing capacity above 50t/h is regarded as an advanced large-scale equipment.
  • the energy consumption for processing 200 tons of raw grain needs 23kW or more. If you add a hoist, the energy consumption is higher. If you process more than 200 tons of raw grain per hour, you will need more complicated configuration and higher energy consumption.
  • the equipment also needs to be connected with accessories such as splitter and the cost is higher. After the grain harvest comes back, because it can't be put into the warehouse in time, the insects eat, rat, bird, and mold, and lose more than 10% of the harvested grain, solving the initial processing speed of grain is an urgent problem to be solved in the development of the country and the grain industry.
  • the traditional cleaning of large mesh belts is composed of a feeding hopper, a mesh belt conveying mechanism, a cleaning mechanism and a transmission system. It mainly removes large debris such as straw heads, long straws, bricks, and clods. After the harvest containing the grain naturally falls to the sieve surface, since the grain size of the grain is much smaller than the sieve hole, it falls through the sieve hole and flows to the grain discharge port; and if the particle size or length of the large impurity is larger than the sieve hole, it cannot or cannot pass through the sieve hole. On the screen surface, large impurities are transported to the impurity discharge port along with the advancement of the conveyor belt, thereby separating small particle size harvests such as grain and large impurities.
  • the lower layer is also very susceptible to clogging in the secondary screening.
  • the mesh belt screens are intermittent work, which is used for cleaning up large impurities. It is not suitable for cleaning and mixing. Because the mesh is smaller and more likely to be blocked, it is not used in the industry for cleaning and cleaning.
  • the traditional cleaning sieve output is generally 30-50 tons / hour, the output of 100 tons / hour of flat cleaning screen only a few manufacturers can produce.
  • the traditional cleaning screen surface is relatively fixed with the screen box, and only the flat back movement is carried out. Some small or broken raw grain is easily stuck in the sieve hole after work, causing the screen surface to be blocked and unable to be cleaned by itself.
  • the screen cleaning mechanism is not Ideally, the worker must clean the sieve surface once a day to clear the sieve hole, which is time consuming and laborious, otherwise it will affect the screening effect.
  • the object of the present invention is to provide a decontamination device with high processing capacity, high processing capacity, low construction height, low construction cost, and efficient separation of impurities, and a method for removing impurities.
  • the utility model relates to a flat-screening screen with a clear and large mesh
  • the composition comprises: a sieve frame, wherein the sieve frame is hung in the sieve frame, and the sieve box is provided with a large medium mesh screen and a small sieve a mesh screen with a sieve, wherein the screen box is connected to a flat-back motion mechanism, and the two sides of the large medium mesh screen and/or the small mesh screen are connected to the side plates through a sealing structure, the large and medium miscellaneous
  • the lower part of the mesh belt screen is provided with a food guiding mechanism, and the large and medium mesh screen and the small mesh screen are connected to the driving mechanism.
  • the first clear and large mesh belt is flatly sifted, and the two sides of the large medium mesh screen and/or the small mesh screen are connected to the side plates through a sealing structure, and the sealing structure comprises a group a support roller or a support plate connected to the side plate, the edge of the large mesh screen and/or the small mesh screen is placed on the support roller or the support plate,
  • the support rollers are in a single row or in multiple rows.
  • the first clear large mesh belt is flatly sifted, and the two sides of the large medium mesh screen and/or the small mesh screen are connected to the side plates through a sealing structure, and the sealing structure includes
  • the side panel is connected to the body, and the body has a groove for clamping the edge of the large mesh screen and/or the edge of the small mesh screen, and the body adopts an integral or split structure.
  • the first clear large mesh belt is flatly sifted, and the two sides of the large medium mesh screen and/or the small mesh screen are connected to the side plates through a sealing structure, and the sealing structure includes The brackets of the side panel connection, the edges of the large mesh screen and/or the small mesh screen have elastic adjustment members that are in contact with the side panels or the brackets.
  • the first clear large mesh belt is flatly sifted, and the two sides of the large medium mesh screen and/or the small mesh screen are connected to the side plates through a sealing structure, and the sealing structure includes The side panel connecting body, the edge of the large mesh screen and/or the small mesh screen is sandwiched between the body and the elastic pressing member; or the sealing structure includes The body of the side panel connection, the edge of the large mesh screen and/or the small mesh screen extends between the body and the bracket or the idler.
  • the pre-clearing mesh belt is flat-backed, the food guiding mechanism is an inclined grain guiding plate or a belt conveyor, and the large-medium mesh belt is screened below the screen surface and/or
  • the small mesh belt is provided with a roller under the sieve surface, and the flat return mechanism has a radius of gyration of 4-11 mm and a rotation frequency of 300-450 rpm.
  • the first clear and large mesh belt is flatly sifted, the large miscellaneous sieve is an annular mesh belt sieve, and the large medium and medium mesh screen has a sieve surface angle of 0-4 degrees, the large and medium-sized
  • the mesh size of the mesh screen is greater than 1.5 times the size of the sieved grain
  • the small mesh screen is an annular sieve surface having a composite layer
  • the mesh angle of the small mesh screen is 0-5 degrees
  • the mesh size of the small mesh screen is less than 0.8 times of the size of the sieved grain
  • the large and medium mesh screen and the small mesh screen are respectively set in two
  • the drum on one side is connected to the driving mechanism, and the working surfaces of the drum and the roller are glued.
  • the first clear and large mesh belt is flatly sifted, and the large and medium mesh belt screen is provided with a conveying plate, and the conveying plate is a set of parallel guiding swash plates or discharging to both sides.
  • the conveying plate is a set of parallel guiding swash plates or discharging to both sides.
  • the first clear and large mesh belt is flatly sifted, the small miscellaneous mesh belt screen is a group, and the small miscellaneous mesh belt screen is provided with a slanted and outgoing sliding skateboard,
  • the mesh belt is inclined to form a v-shaped structure or inclined to both sides of the mesh belt to form an inverted v-shaped structure.
  • the bottom has a spiral discharging mechanism
  • the small mixed mesh belt sieve and / or the large and medium mesh belt screen is equipped with a cleaning roller or a cleaning brush
  • the small miscellaneous mesh belt sieve is a group, which is respectively a large grain grain mesh sieve, a small grain grain mesh sieve
  • the bottom of the deflector has a redirecting plate.
  • the invention discloses a method for removing grain by using the first-prepared mesh belt flat back sieve, and starts the mesh belt sieve and the flat return mechanism, and the grain first falls onto the large miscellaneous mesh belt sieve, and the straight belt and the rotation of the mesh belt are carried out.
  • the circular motion of the mechanism is sifted under the spiral motion track, and the two sides of the screen surface of the large mesh screen are respectively placed on the sealing structure, and the sealing structure is connected with the side plates, effectively blocking the residue of the screen and being mixed.
  • the sieve material enters the small miscellaneous mesh belt through the guide plate, and is sieved under the spiral motion track synthesized by the straight motion of the mesh belt and the circular motion of the rotary mechanism, and the sieve with the small miscellaneous mesh screen
  • the sides of the surface are also placed on the sealing structures on both sides of the surface.
  • the sealing structure on both sides of the small mesh screen is also connected with the side plates, effectively blocking the grain residue from falling, and the grain is collected as a sieve residue.
  • the small substances in the sieve are collected and discharged.
  • the large-scale mesh belt screen of the invention has a high output in the upper mesh belt flat screen, and the same floor space, the single-layer high-processing rice single-stage output can reach 100-300 tons per hour, the same floor space, treatment The ability is increased several times. And we can customize 2000 tons of extra large screens for customers' special needs.
  • the screen surface of the present invention performs linear motion, and the screen box performs a flat motion to form a compound motion mode.
  • the composite motion enables the screen surface to have a self-cleaning function. When the screen surface moves to the drum and the screen surface is curved, The blockage in the sieve hole will be pulled out or loosened under the action of the flat back movement. When the screen surface moves downward, the material on the sieve surface will fall due to gravity and peaceful return, thereby achieving the effect of cleaning the screen surface. Can greatly save labor.
  • the invention adopts a flat screen surface, and can be easily bent around the drum. Since the front line of the sieve contains the flat back movement, the plane screen surface itself is not blocked, and the sieve residue is easy to roll off.
  • the present invention fixes the sealing structure on the side plate, and the sealing structure of the present invention comprises a set of support rollers connected to the side plates or Supporting objects such as support plates or support frames, the edges of the large mesh screen and/or small mesh screens are placed on the supporting objects, and the large mesh screens and/or small mesh screens are supported by the supports.
  • the seal and the support are driven by the drive motor, and the support rollers may be in a single row or in multiple rows.
  • a sealing structure for another sealing arrangement of the present invention includes a body coupled to the side panel, the body having an edge that grips the large mesh screen edge and/or the small mesh screen
  • the groove, the large mesh belt screen edge and/or the edge of the small mesh screen are in the groove and slide forward along the groove.
  • the body may be of a whole body or a split structure as needed. The sieve residue and the undersize are separated by a sealing device.
  • a sealing structure of another sealing scheme of the present invention includes a bracket connected to the side panel, the edge of the large mesh screen and/or the small mesh screen having the side panel or the The elastic adjustment member of the bracket contact. The effectiveness of the seal is ensured by an elastomeric seal. The sieve residue and the undersize are separated by a sealing device.
  • the sealing structure is connected to the body of the side plate, and the edge of the large mesh screen and/or the small mesh screen is clamped on the body and the elastic pressing member. Between; to ensure the position of the screen surface by elastic deformation, good sealing. The sieve residue and the undersize are separated by a sealing device.
  • a sealing structure of another sealing scheme of the present invention includes a body connected to the side panel, the rim of the large mesh screen and/or the small mesh screen extending into the body and the bracket Or between the rollers. There is basically no friction. The sieve residue and the undersize are separated by a sealing device.
  • the food guiding mechanism of the present invention is an inclined grain guiding plate or a belt conveyor, and the large and medium mesh belt screen surface and/or the small mesh belt screen surface is equipped with a roller, the present Under the screen surface of the invention, a roller is arranged to prevent the screen surface from sinking and deforming.
  • Traditional cleaning screens need to be equipped with two types of screens to deal with large and medium and small impurities. It requires several floors of work towers, and there are many suction points. It is necessary to configure multiple pulse dust collectors. The configuration is cumbersome and the lifting height is high. Above 30 meters, the fall of the grain layer is inevitable, and the crushing and downgrading are inevitable, and the energy consumption required for the operation of the equipment is high, so the comprehensive cost is high.
  • the cleaning sieve of the invention has strong screening ability, and can remove large impurities and remove small and medium impurities, and one cleaning sieve can replace the traditional multiple cleaning sieve combination, and does not require a high working tower, thereby reducing food lifting.
  • the height simplifies the configuration, which saves energy consumption and reduces costs, and significantly improves food grade and quality.
  • the large miscellaneous sieve of the present invention is an annular mesh belt sieve, and the sieve angle of the large medium mesh screen is 0-4 degrees, and the sieve size of the large medium mesh sieve is larger than that of the sieve.
  • the small mesh belt sieve is an annular sieve surface having a composite layer, and the sieve mesh angle of the small mesh belt sieve is 0-5 degrees, and the small miscellaneous mesh belt
  • the mesh size of the sieve is less than 0.8 times the size of the sieved grain, and the flat return mechanism has a radius of gyration of 4-11 mm and a swing frequency of 300-450 rpm. Achieve optimal screening parameters.
  • the two ends of the large and medium mesh screen and the small mesh screen of the present invention are respectively sleeved on the rollers on both ends, and the roller on one side is connected to the driving mechanism, and is driven by the driving mechanism.
  • the side roller ring runs to form a belt transmission structure, and the working surfaces of the roller and the roller have glue hanging, which can significantly increase the friction force, effectively ensure the positioning of the screen, enhance the vibration screening effect of the rotation on the grain, and prevent Sliding and forward work efficiency due to sliding.
  • the drum has a blocking edge, which can effectively overcome the deviation and drift of the conveyor belt and improve the service life of the mesh belt screen.
  • the lower part of the large and medium mesh belt screen of the invention is provided with a guide grain plate or a belt conveyor, and the sieved objects can be collected and guided to one end, so that the undersize material and the grain are entered from the end of the small mixed sieve, and the whole process is sieved, so that the small impurities can be obtained. More adequate, longer distance screening to improve the screening effect.
  • the large and medium mesh belt screen of the present invention is provided with a conveying plate, wherein the conveying plate is a set of parallel guiding swash plates, and the grain of the first layer of sieve mesh is concentrated to the starting end of the lower sieve surface.
  • the length of the sieving can be effectively lengthened, and the quality of the sieving can be improved.
  • a large impurity output mechanism is arranged in the outlet direction of the large and medium mesh screen in the lower layer to prevent the sifting. According to the situation of sieving different plant straws, it is sometimes possible to use a discharge slanting plate which discharges to both sides, which can effectively prevent the screening of the secondary screening process.
  • a plurality of working sieves can be formed into a group of small mesh belt screens, which are arranged in the same screen box on the upper and lower sides, in order to avoid the mixed materials with the lower layer in order to clean the undersize materials, wherein the bottom is from the bottom to the second small
  • the small mesh belt screen of the miscellaneous mesh belt is provided with a slanted and outgoing slipperboard, and the splayed skateboard may be: a. a set of parallel plates inclined along the mesh belt; or b. 2 oppositely inclined
  • the v-shaped structure, the slanting slide plate inclined along the mesh belt is a v-shaped structure, and the bottom has a spiral discharge mechanism; c.
  • the small mesh screen and/or the large and medium mesh screen are equipped with a cleaning roller or Clean the brush.
  • the small mesh belt screen of the invention comprises a composite screen surface, comprising a rigid skeleton screen surface of a spiral steel wire and a dense mesh screen surface, or a small mixed sieve surface reinforced by a polymer strip to ensure that the screen surface is in a dense mesh state.
  • a composite screen surface comprising a rigid skeleton screen surface of a spiral steel wire and a dense mesh screen surface, or a small mixed sieve surface reinforced by a polymer strip to ensure that the screen surface is in a dense mesh state.
  • the traditional grain removal machine can only use a kind of equipment for different kinds of mesh, such as cleaning up the impurities of the corn harvest and cleaning up the impurities of the rice harvest.
  • the small miscellaneous mesh belt screen of the invention is respectively provided with a large grain grain mesh screen, a small grain grain mesh screen, and is installed at the bottom of the deflecting swash plate.
  • hinged reversing plate which can be selectively deflected by manually shifting the direction of the reversing plate, and enters a small miscellaneous mesh belt screen of different size sieve holes, and one device completes the process of removing various miscellaneous grains.
  • the screen surface of the mesh belt screen of the present invention has various forms, which may be formed by sequentially arranging metal sieve sheets, or formed by braiding of wires, or stamping. If a sieve piece hinged at one end is used, when running to the lower layer, Open the sieve surface so that the sieve material can be discharged smoothly, avoiding internal blockage. Different types of sieve surface can be used for different types of raw grain screening requirements.
  • the invention relates to a screening device comprising a large mesh screen and a small mesh screen, and the screening movement is a spiral motion.
  • the sides of the screen surface of the large mesh screen and the small mesh screen are respectively placed on the sealing structures on both sides, the sealing structure and the side plates. Connected, effectively blocking the residue of the sieve.
  • Figure 1 is a schematic view of the structure of the product.
  • Figure 2 is a left side view of Figure 1.
  • Figure 3 is a schematic view of the structure of the screen box of the product (the parallel conveyor plate is installed in the large medium mesh screen).
  • Figure 4 is a schematic view showing the structure of the screen box of the product (the inverted medium-shaped belt plate is provided with an inverted v-shaped conveying plate).
  • Figure 5 is a left side view of Figure 4 (an inverted v-shaped conveyor plate is mounted in the large medium mesh screen).
  • Figure 6 is an enlarged view of the z-node structure of Figure 5.
  • Figure 7 is a schematic view showing the structure of the screen box of the product (screw conveyor or small mesh screen as a conveying plate).
  • Figure 8 is a schematic view of the structure of the screen box of the product (two small miscellaneous screens, the small miscellaneous screen has a v-shaped skid plate, and the inlet has a reversing plate 13).
  • Figure 9 is a schematic view of the structure of the screen box of the product (2 small miscellaneous screens having an inverted v-shaped slack in the small miscellaneous screen, the inlet having a redirecting plate 13, and the inlet of the small miscellaneous screen having an inlet distribution device 19).
  • Figure 10 is a left side view of Figure 9 (the split skateboard is an inverted v-shaped structure).
  • Figure 11 is a plan view of the hybrid skateboard in an inverted v-shaped configuration with a stud 18 in the middle.
  • Figure 12 is a schematic view of a large mesh belt screen structure with a sealed structure.
  • Figure 13 is a schematic view of a small mesh belt screen structure of a composite screen surface (removal drive mechanism, power input shaft 21, central circular shape is a schematic view of a dense mesh layer without a small mesh belt screen).
  • Figure 14 is a schematic view of the detail of the screen surface of the large and medium mesh screen (without coupling and drive).
  • Figure 15 is a schematic view of a small mesh belt screen having a structure of a punched hole 26 (without a coupling and a driving device).
  • Figure 16 is a schematic view of the structure of a large mesh screen with a punched structure (without coupling and drive).
  • Figure 17 is a schematic view showing the structure of the flat return mechanism (the heavy wheel 22).
  • Figure 18 is a schematic view showing the mounting structure of the grooved sealing structure, the body of which is integral.
  • Figure 19 is a schematic view of the mounting structure of the slotted sealing structure, the body of the sealing structure being separate.
  • Figure 20 is a schematic view showing the mounting structure of the sealing structure with a bracket.
  • Figure 21 is a schematic view showing the mounting structure of a sealing structure with a bracket.
  • Figure 22 is a schematic view showing the mounting structure of the sealing structure of the double idler.
  • Figure 23 is a schematic view showing the mounting structure of the sealing structure including the skirt and the upper baffle.
  • Figure 24 is a schematic view showing the mounting structure of the sealing structure with the lower portion being the idler and the upper baffle.
  • Figure 25 is a cross-sectional view taken along line A-A of Figure 24 .
  • Figure 26 is a schematic view showing the mounting structure of the sealing structure with the lower portion being the idler and the upper portion being the elastic sealing member.
  • Figure 27 is a schematic view showing the mounting structure of the sealing structure with the lower portion being the bracket.
  • Figure 28 is a schematic view showing the mounting structure of the sealing structure having the elastic end of the screen.
  • the utility model relates to a flat-screening screen with a clear and complicated mesh, which comprises: a sieve frame 1 in which the sieve box 2 is suspended by a rocker 9, a swing rod or a wire rope, the sieve box The medium and small mesh belt screen 3 and the small miscellaneous net belt screen 4 are installed, and the screen box connecting the flat back movement mechanism 5 provides the screen box with a power source for circular motion in the screen box through the flat back movement mechanism, It is ensured that the sieve residue does not fall on both sides in the flat back movement, and the sides of the large medium mesh screen and/or the small mesh screen are connected to the side plate 22 through the sealing structure 6 in order to improve the small a multi-screening effect, lengthening the length of the screen, the lower portion of the large-sized mesh screen is provided with a food guiding mechanism 7, and the inlet of the small mesh screen is located at the lower end of the food guiding mechanism, so that the whole The grain and the like which are sieved by the large and medium mesh screen are fully screened
  • the sealing structure 6 includes a set of support rollers 61 or support plates 61 connected to the side plates, and the support rollers may be end rollers or full width rollers, which are different according to the width of the mesh belt.
  • the edge of the mesh screen and the small mesh screen may be placed on the support roller or the support plate corresponding thereto, and the single row of support rollers or support plates are horizontally arranged according to the grain specific gravity and the screening thickness. Differently, the spacing of the support rolls needs to be determined according to calculations.
  • the support rolls may be in a single row, and if necessary, a row of second row idler-sidewall anti-wearing rolls perpendicular to the horizontal rolls is arranged on the side walls.
  • the first clear large mesh belt flat back screen described in Embodiment 1 is connected to the side plates through the sealing structure on both sides of the large medium mesh screen and/or the small mesh screen, the sealing structure 6 Including a body 62 coupled to the side panel, the body having a groove 63 for gripping the edge of the large mesh screen edge and/or the small mesh screen, the large mesh belt Inserting the edge of the sieve edge and/or the small mesh screen into the groove, the body is disposed along the entire length of the side wall of the wall, and the groove and the screen face together form a sieve residue and a sieve space.
  • the isolation space constitutes a sealed structure seal
  • the body may adopt an integral structure or a split structure, and the upper and lower parts are fastened together, and are connected by a mechanical structure.
  • the length direction may also be a plurality of segmented bodies, which facilitate partial maintenance. .
  • the first clear large mesh belt flat back screen described in Embodiment 1 the two sides of the large medium mesh screen and/or the small miscellaneous mesh screen are connected to the side plates through a sealing structure, and the sealing structure comprises a bracket 64 connected to the side panel, the edge of the large mesh screen and/or the small mesh screen has a resilient adjusting member 65 in contact with the side panel or the bracket, The space between the edge of the large mesh screen and/or the small mesh screen and the bracket is closed by elastic force to form a sealing structure.
  • the first clear large mesh belt flat back screen described in Embodiment 1 the two sides of the large medium mesh screen and/or the small miscellaneous mesh screen are connected to the side plates through a sealing structure, and the sealing structure comprises a body 66 connected to the side panel, the edge of the large mesh screen and/or the small mesh screen is sandwiched between the body and the elastic pressing member 67, and the elastic force is closed
  • the space between the edge of the large mesh screen and/or the small mesh screen and the body 66 constitutes a sealed structure.
  • the sealing structure comprises a body 68 connected to the side plate, the large mesh belt screen and/or the small mesh screen
  • the rim extends between the body and the bracket 69 or the idler.
  • the space between the edge of the large mesh screen and/or the small mesh screen and the body 68 is closed by elastic force to form a sealing structure.
  • the first clearing mesh belt of the embodiment 1 or 2 or 3 or 4 or 5 or 6 is a flat screen
  • the food guiding mechanism 7 is an inclined grain guiding plate or a belt conveyor
  • the large A roller is arranged under the sieve surface of the medium mesh screen and/or below the small mesh belt screen surface
  • the radius of rotation of the flat return mechanism is 4-11 mm
  • the rotation frequency is 300-450 rpm.
  • the first clearing mesh belt of the embodiment 1 or 2 or 3 or 4 or 5 or 6 or 7 is a flat screen
  • the large mixed sieve is an annular mesh belt sieve
  • the large medium mesh screen is sieved.
  • the sieve surface angle is 0-4 degrees
  • the sieve size of the large medium mesh screen is more than 1.5 times that of the sieved grain size
  • the small mesh belt sieve is a ring-shaped sieve with a composite layer.
  • the mesh angle of the small mesh screen is 0-5 degrees
  • the mesh size of the small mesh screen is less than 0.8 times of the size of the sieved grain to achieve the best screening effect.
  • the large medium mesh screen and the small mesh screen are respectively sleeved on the rollers on both ends, and the roller on one side is connected to the driving mechanism 8, the roller and the drum The working faces of the rollers are all glued.
  • the first clearing of the mesh belt of the embodiment 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 is carried out, wherein the large medium mesh belt screen is provided with a conveying plate 12,
  • the conveying plate is a set of parallel guiding swash plates or discharging slanting plates which are discharged to both sides.
  • the outlet direction of the large and medium mesh screens located in the lower layer is large Output mechanism 15.
  • Embodiment 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 of the first clear mesh belt flat screen the small mesh belt screen is a group, the small miscellaneous
  • the mesh belt screen is provided with a slanting and outgoing slide plate 17, and the splayed slide plate may have a set of slide plates arranged in parallel along the mesh belt; or two cross-slide plates may be arranged obliquely opposite to each other to form a v-shaped structure. If it is a v-shaped structure, the bottom has a spiral discharge mechanism 18.
  • the detaching slide plate can also be inclined to the two sides of the mesh belt to form an inverted v-shaped structure, and the small impurities are discharged to the impurity removing passages 16 on both sides of the mesh belt.
  • the small mesh belt screen and/or the large medium-sized mesh belt screen is equipped with a cleaning roller or a cleaning brush, and the small miscellaneous mesh belt screen is a group, respectively
  • the grain grain net has a sieve
  • the small grain grain net has a sieve
  • the bottom of the guide swash plate has a redirection plate 13 .
  • the invention discloses a method for removing impurities by using a first-prepared mesh belt flat back sieve according to one of the embodiments 1-10, and starts a mesh belt sieve and a flat return mechanism, and the grain first falls onto the large miscellaneous mesh belt sieve.
  • the spiral motion track synthesized by the straight motion of the mesh belt and the circular motion of the rotary mechanism the two sides of the screen surface of the large mesh screen are respectively placed on the sealing structure, and the sealing structure is connected with the side plates to effectively block the sieve residue.
  • the large amount of debris is discharged, and the large amount is discharged as a sieve residue; the sieved material enters the small miscellaneous mesh belt through the guide plate, and is sieved under the spiral motion track synthesized by the straight motion of the mesh belt and the circular motion of the rotary mechanism.
  • the sides of the screen surface of the small mesh screen are also placed on the sealing structures on both sides of the screen.
  • the sealing structure on both sides of the small mesh belt screen is also connected with the side plates, effectively blocking the sediment residue and grain falling, and the grain as a sieve.
  • the remaining objects are collected into the warehouse, and the small objects are collected and discharged.
  • a pre-clear mesh belt flat return screen comprising: a sieve frame, wherein the sieve frame is connected to the sieve box by a boom or a rocker or a rocker,
  • the sieve box is provided with a set of small miscellaneous mesh belt sieves and large and medium miscellaneous mesh belt screens, and the small miscellaneous mesh belt screen and the large medium miscellaneous mesh belt screen are provided with a flat return mechanism, and the small miscellaneous mesh belt screen a skid plate having an inclined surface below the screen surface
  • the feeding device of the small mesh screen is equipped with an inlet distribution device, the inlet distribution device has a distribution groove, and the bottom end of the distribution groove has a set In the grain entrance, each layer of small miscellaneous sieve corresponds to 1-3 said feeding openings, and the sieve surface of the small miscellaneous mesh screen is intersected with the hard wire cleaning roller, and the small miscellaneous mesh belt sieve One side is equipped with a suction and

Landscapes

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Abstract

一种先清大杂的网带平回筛及其粮食除杂方法，包括筛架(1)，筛架中通过摇杆(9)、摆杆或者钢丝绳吊挂筛箱(2)，筛箱(2)中装有大中杂网带筛(3)和小杂网带筛(4)，筛箱(2)连接平回运动机构(5)，通过平回运动机构(5)给筛箱(2)提供进行圆运动的动力源，所述的大中杂网带筛(3)和/或小杂网带筛(4)的两侧通过密封结构(6)与侧板(22)连接，所述的大中杂网带筛(3)的下部装有导粮机构(7)，所述的小杂网带筛(4)的入口位于所述的导粮机构(7)的下端，所述的大中杂网带筛(3)和小杂网带筛(4)均连接驱动机构(8)。通过上述结构，提高除杂的效率，使除杂更充分，质量更高。

Description

先清大杂的网带平回筛及其粮食除杂方法 技术领域：
本发明涉及一种大型的粮食除杂清理设备，特别是一种每小时处理量可达100-500吨的用于清除大、中、小杂的超大型粮食清理除杂设备。
背景技术：
目前市场上没有能够同时去除大中小杂的大型粮食清理设备，传统的用于处理大杂的设备主要是网带筛和滚筒筛，网带筛产量一般为100-500t/h，滚筒筛为50-150t/h，处理中小杂的设备主要是振动筛和回转筛，产量一般在10-50t/h，处理量50t/h以上的中小杂筛已经算是先进的大型设备。如果每小时清理200吨原粮，需要配置2台100t/h的滚筒初清筛处理大杂和4台先进的50t/h的回转筛处理中小杂，成本达到80万左右，同时需要四层的工作塔，高度相当于4层楼高，成本更要100万以上，筛理设备加上工作塔再加上安装费用等，综合成本在200万以上，且上述成本还未将提升机相关费用计入。而且设备运转需要的能耗较高，一台100t/h的滚筒初清筛能耗5.5kW，一台50t/h的旋振筛能耗3.0kW，因此处理200吨原粮能耗需23kW以上，若加上提升机则能耗更高。若每小时处理200吨以上的原粮则需要更繁琐的配置和更高的能耗，设备之间还需要分溜器等联接配件，成本则更高。粮食收获回来以后，由于不能及时入仓，虫吃、鼠叼、鸟衔、发霉，损失在收获粮食的10％以上，解决粮食初加工速度，是国家和粮食行业发展中亟待解决的问题。
传统清理大杂的网带初清筛由进料斗、网带输送机构、清理机构及传动***组成。主要清除草绳头、长秸秆、砖头、土块等大型杂物。当含有粮食的收获物自然下落至筛面以后，由于粮食粒径远小于筛孔，通过筛孔落下流向粮食出料口；而大杂质粒度或长度大于筛孔，就不能或不易通过筛孔，而留在筛面上，大杂质随着输送网带的前行被输送到杂质出料口，从而将粮食等小粒径收获物和大杂质分离。
由于网带筛的筛分过程属于自由下落性质，下层也非常容易在二次筛分中堵塞。传统上，网带筛都是断续工作，用于清理大杂，对于清理中杂不能适应，因为网眼变小更容易堵塞，行业上没有将其用于进行中杂小杂的清理。
再说清理小杂，以清理水稻小杂为例，传统的清理筛产量一般在30-50吨/时，产量100吨/时的平回清理筛只有少数厂家能够生产。传统清理筛筛面与筛箱相对固定，并且只做平回运动，部分小杂或破碎的原粮经过工作中很容易卡在筛孔中，造成筛面堵塞，无法自行清理，筛面清理机构不理想，工人必须每天清理一次筛面，疏通筛孔，耗时耗力，否则就会影响筛理效果。
发明内容：
本发明的目的是提供一种处理能力强、处理量大质量好，设备厂房建设高度小、建设费用低、能有效进行杂物分离的除杂设备和进行粮食除杂的方法。
本发明的目的是这样实现的：
一种先清大杂的网带平回筛，其组成包括：筛架，所述的筛架中吊挂所述的筛箱，所述的筛箱中装有大中杂网带筛和小杂网带筛，所述的筛箱连接平回运动机构，所述的大中杂网带筛和/或小杂网带筛的两侧通过密封结构与侧板连接，所述的大中杂网带筛的下部装有导粮机构，所述的大中杂网带筛和小杂网带筛均连接驱动机构。
所述的先清大杂的网带平回筛，所述的大中杂网带筛和/或小杂网带筛的两侧通过密封结构与侧板连接，所述的密封结构包括一组与所述的侧板连接的支撑辊或者支撑板，所述的大杂网带筛和/或小杂网带筛的边沿搭在所述的支撑辊或者所述的支撑板上，所述的支撑辊为单排或者多排。
所述的先清大杂网带平回筛，所述的大中杂网带筛和/或小杂网带筛的两侧通过密 封结构与侧板连接，所述的密封结构包括与所述的侧板连接的本体，所述的本体上具有夹持所述的大杂网带筛边沿和/或小杂网带筛的边沿的槽，所述的本体采用整体或者分体结构。
所述的先清大杂网带平回筛，所述的大中杂网带筛和/或小杂网带筛的两侧通过密封结构与侧板连接，所述的密封结构包括与所述的侧板连接的托架，所述的大杂网带筛和/或小杂网带筛的边沿具有与所述的侧板或者所述的托架接触的弹性调整件。
所述的先清大杂网带平回筛，所述的大中杂网带筛和/或小杂网带筛的两侧通过密封结构与侧板连接，所述的密封结构包括与所述的侧板连接的本体，所述的大杂网带筛和/或小杂网带筛的边沿夹持在所述的本体和弹性压件之间；或者所述的密封结构包括与所述的侧板连接的本体，所述的大杂网带筛和/或小杂网带筛的边沿伸入到所述的本体和托架或者托辊之间。
所述的先清大杂的网带平回筛，所述的导粮机构为倾斜的导粮板或者带式输送机，所述的大中杂网带筛筛面下面和/或所述的小杂网带筛筛面下面装有托辊，所述的平回机构的回转半径为4-11mm,回转频率为300-450转/分钟。
所述的先清大杂的网带平回筛，所述的大杂筛为环形网带筛，所述的大中杂网带筛的筛面角度为0-4度，所述的大中杂网带筛的筛孔尺寸大于被筛分粮食尺寸的1.5倍以上，所述的小杂网带筛为环形的具有复合层的筛面，所述的小杂网带筛的筛面角度为0-5度，所述的小杂网带筛的筛孔尺寸小于被筛分粮食尺寸的0.8倍以下，所述的大中杂网带筛和所述的小杂网带筛分别套在两端所述的滚筒上，一侧所述的滚筒连接所述的驱动机构，所述的滚筒和所述的托辊的工作面均有挂胶。
所述的先清大杂的网带平回筛，所述的大中杂网带筛中装有输送板，所述的输送板为一组平行的导流斜板或者向两侧出料的出料斜板，当采用导流斜板时，位于下层的所述的大中杂网带筛的出口方向装有大杂输出机构。
所述的先清大杂的网带平回筛，所述的小杂网带筛为一组，所述的小杂网带筛中装有倾斜的出杂滑板，所述的出杂滑板沿网带走向倾斜形成v型结构或者向网带两侧倾斜形成倒v型结构，所述的出杂滑板如果是v形结构，则底部具有螺旋排杂机构，所述的小杂网带筛和/或所述的大中杂网带筛装有清理辊或者清理刷，所述的小杂网带筛为一组，分别为大颗粒粮食网带筛、小颗粒粮食网带筛，所述的导流斜板底部具有改向板。
一种利用所述的先清大杂的网带平回筛进行粮食除杂的方法，启动网带筛和平回机构，粮食首先落入到大杂网带筛上，在网带的直行和回转机构的圆运动合成的螺旋运动轨迹下进行筛理，大杂网带筛的筛面的两侧分别搭在密封结构上，密封结构和侧板相连，有效阻挡筛余物大杂落下，大杂作为筛余物前行排出；筛下物经导向板进入到小杂网带筛，在网带的直行和回转机构的圆运动合成的螺旋运动轨迹下进行筛理，小杂网带筛的筛面的两侧也分别搭在其两侧的密封结构上，小杂网带筛两侧的密封结构也和侧板相连，有效阻挡筛余物粮食落下，粮食作为筛余物前行汇集入仓，筛下物小杂聚集排出。
有益效果：
1.本发明的大中杂网带筛在上的网带平回筛产量高，同样占地面积，单层高度处理水稻单台产量可达每小时100-300吨，同样占地面积，处理能力提高数倍。并且可以客户的特殊需求定制2000吨的特大型筛。另外，本发明的筛面进行直线运动，筛箱进行平回运动，形成复合运动的模式，这种复合运动使筛面具备了自清功能，当筛面运动到滚筒处，筛面弯曲时，筛孔内的堵塞物便会在平回运动下借力弹出或松动，筛面运动到朝下时，筛面上的物质会因重力和平回作用而下落，从而达到了筛面清理的效果，可大大节省人工劳动力。
本发明采用平板筛面，可以方便的绕滚筒弯转。由于筛面前行中包含了平回运动，平面筛面本身没有阻挡，筛余物容易滚落混杂。为了防止筛面两侧出现筛余物的滚落形成与筛下物的混杂，本发明在侧板上固定密封结构，本发明的密封结构包括一组与所述的侧 板连接的支撑辊或者支撑板或者支撑架等支撑物体，所述的大杂网带筛和/或小杂网带筛的边沿搭在支撑物体上，大杂网带筛和/或小杂网带筛凭借支撑物的密封和支撑在驱动电机的驱动下前行，所述的支撑辊可以为单排也可以是多排。
本发明的另一种密封方案的密封结构包括与所述的侧板连接的本体，所述的本体上具有夹持所述的大杂网带筛边沿和/或小杂网带筛的边沿的槽，大杂网带筛边沿和/或小杂网带筛的边沿在槽中，沿着槽向前滑动。根据需要，所述的本体可以采用整体也可以采用分体结构。通过密封装置隔离筛余物和筛下物。
本发明的另一种密封方案的密封结构包括与所述的侧板连接的托架，所述的大杂网带筛和/或小杂网带筛的边沿具有与所述的侧板或者所述的托架接触的弹性调整件。通过弹性密封件保证密封的有效性。通过密封装置隔离筛余物和筛下物。
本发明的另一种密封方案的密封结构与所述的侧板连接的本体，所述的大杂网带筛和/或小杂网带筛的边沿夹持在所述的本体和弹性压件之间；通过弹性变形保证筛面的位置，良好密封。通过密封装置隔离筛余物和筛下物。
本发明的另一种密封方案的密封结构包括与所述的侧板连接的本体，所述的大杂网带筛和/或小杂网带筛的边沿伸入到所述的本体和托架或者托辊之间。基本没有摩擦。通过密封装置隔离筛余物和筛下物。
本发明的导粮机构为倾斜的导粮板或者带式输送机，所述的大中杂网带筛筛面下面和/或所述的小杂网带筛筛面下面装有托辊，本发明的筛面下面装有托辊，防止筛面下沉变形。传统清理筛需要配置两种筛型分别处理大杂和中小杂，需要几层楼高的工作塔，并且吸风点多，需要配置多个脉冲除尘器，配置繁琐，提升高度较高，一般在30米以上，粮食一层层的跌落下来，破碎和降级都是难免的，并且设备运转需要的能耗较高，因此综合成本高。本发明的清理筛筛理能力强，并且既能够去除大杂也能去除中小杂，一台清理筛可代替传统的多个清理筛组合，并且不需要较高的工作塔，降低了粮食提升的高度，简化了配置，既节约了能耗又降低了成本，显著提高了粮食等级和质量。
本发明所述的大杂筛为环形网带筛，所述的大中杂网带筛的筛面角度为0-4度，所述的大中杂网带筛的筛孔尺寸大于被筛分粮食尺寸的1.5倍以上，所述的小杂网带筛为环形的具有复合层的筛面，所述的小杂网带筛的筛面角度为0-5度，所述的小杂网带筛的筛孔尺寸小于被筛分粮食尺寸的0.8倍以下，所述的平回机构的回转半径为4-11mm,回转频率为300-450转/分钟。实现最佳的筛分参数。
本发明的大中杂网带筛和小杂网带筛的两端分别套在两端所述的滚筒上，一侧所述的滚筒连接所述的驱动机构，在驱动机构的带动下绕两侧滚筒环行运行形成带传动结构，所述的滚筒和所述的托辊的工作面均有挂胶，能显著增加摩擦力，有效保证筛网定位，增强回转对粮食的振动筛分效果，防止因滑动影响回转和前行的工作效率。所述的滚筒具有阻挡边，能够有效克服传送带的偏离和漂移现象，提高网带筛的使用寿命。
本发明的大中杂网带筛下部装有导粮板或带式输送机，可以集合筛下物，导向一端，使筛下物及粮食从小杂筛一端进入，全程筛理，使小杂得以更加充分、更长距离的筛分，提高筛理效果。
本发明的大中杂网带筛中装有输送板，所述的输送板为一组平行的导流斜板，将第一层筛面筛下来的粮食集中送到下层筛面的起始端，可以有效加长筛理长度，提高筛分质量，采用导流斜板时，位于下层的所述的大中杂网带筛的出口方向装有大杂输出机构，防止堵筛。根据筛理不同植物秸秆的情况，有时也可以采用向两侧出料的出料斜板，可以有效防止二次筛分过程发生堵筛。
根据情况本发明可以将多个工作筛组成一组小杂网带筛，上下布置在同一个筛箱中，为了清理筛下物避免与下层的粮食混杂，其中自下而上从第二个小杂网带筛起所述的小杂网带筛装有倾斜的出杂滑板，所述的出杂滑板可以是：a.一组沿网带倾斜的平行板； 或者b.2个相向倾斜成v型结构、沿网带倾斜的所述的出杂滑板如果是v形结构，则底部具有螺旋排杂机构；c.也可以向网带一侧或者两侧倾斜形(成倒v型结构)，便于筛下物清除；筛分杂质粘性比较大的物料时，为了更新筛网的工作性能，所述的小杂网带筛和/或所述的大中杂网带筛装有清理辊或者清理刷。
本发明的小杂网带筛包括复合的筛面，包括螺旋钢丝的刚性骨架筛面和密孔筛面，或者高分子条加强的小杂筛面，保证筛面在较密的筛孔状态下具有较好的刚性和弯转性能。
由于原粮的粒度差异，传统的粮食除小杂机械只能为一种粮食除杂，例如清理玉米收获物的杂质和清理水稻收获物的杂质，就需要分别使用不同筛孔的设备。为了不同粮食种类共享本发明的设备，减少处理或者仓储单位开支，本发明的小杂网带筛分别设置了大颗粒粮食网带筛、小颗粒粮食网带筛，并在导流斜板底部装有铰接的改向板，通过人工拨动改向板的方向，进行选择性导流，进入不同大小筛孔的小杂网带筛，一台设备完成多种粮食的除小杂过程。
本发明的网带筛的筛面具有多种形式，可由金属筛片顺次排列形成，或为金属丝编结形成，或者冲压形成，如果采用一端铰接的筛片，在运行到下层的时候，可以打开筛面，使得筛下物顺利排出，避免内堵，采用不同形式的筛面，可以适用于不同种类的原粮筛分要求。
本发明是包括大杂网带筛和小杂网带筛的筛分设备，筛分运动为螺旋运动。为了避免在螺旋运动中筛分出的杂物和粮食发生混杂，大杂网带筛和小杂网带筛的筛面的两侧分别搭在其两侧的密封结构上，密封结构和侧板相连，有效阻挡筛余物落下混杂。
附图说明：
附图1是本产品的结构示意图。
附图2是附图1的左视图。
附图3是本产品筛箱的结构示意图(大中杂网带筛中装有平行的输送板)。
附图4是本产品筛箱的结构示意图(大中杂网带筛中装有倒v型输送板)。
附图5是附图4的左视图(大中杂网带筛中装有倒v型输送板)。
附图6是附图5的z节点结构放大图。
附图7是本产品筛箱的结构示意图(螺旋输送机或者小杂网带筛作为输送板)。
附图8是本产品筛箱的结构示意图(2个小杂筛，小杂筛中具有与v形出杂滑板、入口具有改向板13)。
附图9是本产品筛箱的结构示意图(2个小杂筛，小杂筛中具有倒v形出杂滑板、入口具有改向板13，小杂筛的入口具有入口分配装置19)。
附图10是附图9的左视图(出杂滑板为倒v型结构)。
附图11是出杂滑板为倒v型结构的俯视图，中间是出杂的螺旋18。
附图12是带有密封结构的大杂网带筛结构示意图。
附图13是复合筛面的小杂网带筛结构示意图(拆除驱动机构。动力输入轴21，中部圆形是不带小杂网带筛的密网层的结构示意图)。
附图14是大中杂网带筛的筛面细节结构示意图(不带联轴器和驱动装置)。
附图15是带有冲孔26结构的小杂网带筛筛面结构示意图(不带联轴器和驱动装置)。
附图16是带有冲孔结构的大杂网带筛筛面结构示意图(不带联轴器和驱动装置)。
附图17是平回机构的结构示意图(偏重轮22)。
附图18是带槽的密封结构的安装结构示意图，密封结构主体是整体的。
附图19是带槽的密封结构的安装结构示意图，密封结构主体是分体的。
附图20是带托架的密封结构的安装结构示意图。
附图21是带托架的密封结构的安装结构示意图。
附图22是双托辊的密封结构的安装结构示意图。
附图23是包括裙边和上部挡板的密封结构的安装结构示意图。
附图24是下部为托辊、上部挡板的密封结构的安装结构示意图。
附图25是附图24的A-A剖视图。
附图26是下部为托辊、上部为弹性密封件的密封结构的安装结构示意图。
附图27是下部为托架的密封结构的安装结构示意图。
附图28是筛网具有弹性端头的密封结构的安装结构示意图。
具体实施方式：
实施例1：
一种先清大杂的网带平回筛，其组成包括：筛架1，所述的筛架中通过摇杆9、摆杆或者钢丝绳吊挂所述的筛箱2，所述的筛箱中装有大中杂网带筛3和小杂网带筛4，所述的筛箱连接平回运动机构5通过平回运动机构给筛箱提供在筛箱中进行圆运动的动力源，为了保证筛余物不会在平回运动中在两侧掉落，所述的大中杂网带筛和/或小杂网带筛的两侧通过密封结构6与侧板22连接，为了提高小杂筛分效果，加长筛理长度，所述的大中杂网带筛的下部装有导粮机构7，所述的小杂网带筛的入口位于所述的导粮机构的下端，使得整个大中杂网带筛筛分下来的粮食等在小杂筛上全长充分筛理，所述的大中杂网带筛和小杂网带筛均连接驱动机构8，在进行平回运动的同时，进行网带筛理。
实施例2：
实施例1所述的先清大杂的网带平回筛，所述的大中杂网带筛和/或小杂网带筛的两侧通过密封结构与侧板连接，所述的密封结构6包括一组与所述的侧板连接的支撑辊61或者支撑板61，所述的支撑辊可以是端部托辊也可以是全宽度的托辊，根据网带宽度不同，所述的大杂网带筛和小杂网带筛的边沿都可以搭在与其对应的所述的支撑辊或者所述的支撑板上，单排的支撑辊或者支撑板水平设置，根据粮食比重和筛分厚度不同，支撑辊的间距需要根据计算确定，所述的支撑辊可以是单排，必要时在侧壁上设置一排与水平托辊垂直方向的第二排托辊-侧壁防磨擦托辊。
实施例3：
实施例1所述的先清大杂网带平回筛，所述的大中杂网带筛和/或小杂网带筛的两侧通过密封结构与侧板连接，所述的密封结构6包括与所述的侧板连接的本体62，所述的本体上具有夹持所述的大杂网带筛边沿和/或小杂网带筛的边沿的槽63，所述的大杂网带筛边沿和/或小杂网带筛的边沿的***所述的槽中，所述的本体沿着墙体的侧壁全长设置，槽和筛面共同形成筛余物和筛下物空间的隔离空间构成密封结构密封，所述的本体可以采用整体结构，也可以采用分体结构，上下两部分扣合在一起，通过机械结构连接，当然长度方向也可以多段的分段本体，方便部分维护。
实施例4：
实施例1所述的先清大杂网带平回筛，所述的大中杂网带筛和/或小杂网带筛的两侧通过密封结构与侧板连接，所述的密封结构包括与所述的侧板连接的托架64，所述的大杂网带筛和/或小杂网带筛的边沿具有与所述的侧板或者所述的托架接触的弹性调整件65，通过弹性力闭合所述的大杂网带筛和/或小杂网带筛的边沿与托架之间的空间，构成密封结构。
实施例5：
实施例1所述的先清大杂网带平回筛，所述的大中杂网带筛和/或小杂网带筛的两侧通过密封结构与侧板连接，所述的密封结构包括与所述的侧板连接的本体66，所述的大杂网带筛和/或小杂网带筛的边沿夹持在所述的本体和弹性压件67之间，通过弹性力闭合所述的大杂网带筛和/或小杂网带筛的边沿与本体66之间的空间，构成密封结构。
实施例6：
实施例1所述的先清大杂网带平回筛，所述的密封结构包括与所述的侧板连接的本体68，所述的大杂网带筛和/或小杂网带筛的边沿伸入到所述的本体和托架69或者托辊之间。通过弹性力闭合所述的大杂网带筛和/或小杂网带筛的边沿与本体68之间的空间，构成密封结构。
实施例7：
实施例1或2或3或4或5或6所述的先清大杂的网带平回筛，所述的导粮机构7为倾斜的导粮板或者带式输送机，所述的大中杂网带筛筛面下面和/或所述的小杂网带筛筛面下面装有托辊，所述的平回机构的回转半径为4-11mm,回转频率为300-450转/分钟。
实施例8：
实施例1或2或3或4或5或6或7所述的先清大杂的网带平回筛，所述的大杂筛为环形网带筛，所述的大中杂网带筛的筛面角度为0-4度，所述的大中杂网带筛的筛孔尺寸大于被筛分粮食尺寸的1.5倍以上，所述的小杂网带筛为环形的具有复合层的筛面，所述的小杂网带筛的筛面角度为0-5度，所述的小杂网带筛的筛孔尺寸小于被筛分粮食尺寸的0.8倍以下，实现最佳筛分效果。
所述的大中杂网带筛和所述的小杂网带筛分别套在两端所述的滚筒上，一侧所述的滚筒连接所述的驱动机构8，所述的滚筒和所述的托辊的工作面均有挂胶。
实施例9：
实施例1或2或3或4或5或6或7或8所述的先清大杂的网带平回筛，所述的大中杂网带筛中装有输送板12，所述的输送板为一组平行的导流斜板或者向两侧出料的出料斜板，当采用导流斜板时，位于下层的所述的大中杂网带筛的出口方向装有大杂输出机构15。
实施例10：
实施例1或2或3或4或5或6或7或8或9所述的先清大杂的网带平回筛，所述的小杂网带筛为一组，所述的小杂网带筛中装有倾斜的出杂滑板17，所述的出杂滑板可以有一组滑板沿网带走向平行布置；也可以有两跨滑板倾斜相向布置形成v型结构，所述的出杂滑板如果是v形结构，则底部具有螺旋排杂机构18。
所述的出杂滑板还可以向网带两侧倾斜形成倒v型结构，将小杂排出到网带的两侧的除杂通道16。
对于容积粘结的物料，所述的小杂网带筛和/或所述的大中杂网带筛装有清理辊或者清理刷，所述的小杂网带筛为一组，分别为大颗粒粮食网带筛、小颗粒粮食网带筛，所述的导流斜板底部具有改向板13。
实施例11：
一种利用实施例1-10之一所述的先清大杂的网带平回筛进行粮食除杂的方法，启动网带筛和平回机构，粮食首先落入到大杂网带筛上，在网带的直行和回转机构的圆运动合成的螺旋运动轨迹下进行筛理，大杂网带筛的筛面的两侧分别搭在密封结构上，密封结构和侧板相连，有效阻挡筛余物大杂落下，大杂作为筛余物前行排出；筛下物经导向板进入到小杂网带筛，在网带的直行和回转机构的圆运动合成的螺旋运动轨迹下进行筛理，小杂网带筛的筛面的两侧也分别搭在其两侧的密封结构上，小杂网带筛两侧的密封结构也和侧板相连，有效阻挡筛余物粮食落下，粮食作为筛余物前行汇集入仓，筛下物小杂聚集排出。
实施例12：
一种实施例1-10之一所述的先清大杂的网带平回筛，其组成包括：筛架，所述的筛架通过吊杆或者摇杆或者摆杆连接筛箱，所述的筛箱中装有一组小杂网带筛和大中杂网带筛，所述的小杂网带筛和大中杂网带筛中间装有平回机构，所述的小杂网带筛的筛面下方具有倾斜面的出杂滑板，所述的小杂网带筛的进料装置装有入口分配装置，所述的入口分配装置具有分配槽，所述的分配槽底端具有一组进粮口，每层小杂筛与1-3个所述的进粮 口相对应，所述的小杂网带筛的筛面与硬丝清理辊相贯，所述的小杂网带筛的一侧装有吸风吸尘设备。

Claims (10)

  1. 一种先清大杂的网带平回筛，其组成包括：筛架，所述的筛架中吊挂所述的筛箱，其特征是：所述的筛箱中装有大中杂网带筛和小杂网带筛，所述的筛箱连接平回运动机构，所述的大中杂网带筛和/或小杂网带筛的两侧通过密封结构与侧板连接，所述的大中杂网带筛的下部装有导粮机构，所述的大中杂网带筛和小杂网带筛均连接驱动机构。
  2. 根据权利要求1所述的先清大杂的网带平回筛，其特征是：所述的大中杂网带筛和/或小杂网带筛的两侧通过密封结构与侧板连接，所述的密封结构包括一组与所述的侧板连接的支撑辊或者支撑板，所述的大杂网带筛和/或小杂网带筛的边沿搭在所述的支撑辊或者所述的支撑板上，所述的支撑辊为单排或者多排。
  3. 根据权利要求1所述的先清大杂网带平回筛，其特征是：所述的大中杂网带筛和/或小杂网带筛的两侧通过密封结构与侧板连接，所述的密封结构包括与所述的侧板连接的本体，所述的本体上具有夹持所述的大杂网带筛边沿和/或小杂网带筛的边沿的槽，所述的本体采用整体或者分体结构。
  4. 根据权利要求1所述的先清大杂网带平回筛，其特征是：所述的大中杂网带筛和/或小杂网带筛的两侧通过密封结构与侧板连接，所述的密封结构包括与所述的侧板连接的托架，所述的大杂网带筛和/或小杂网带筛的边沿具有与所述的侧板或者所述的托架接触的弹性调整件。
  5. 根据权利要求1所述的先清大杂网带平回筛，其特征是：所述的大中杂网带筛和/或小杂网带筛的两侧通过密封结构与侧板连接，所述的密封结构包括与所述的侧板连接的本体，所述的大杂网带筛和/或小杂网带筛的边沿夹持在所述的本体和弹性压件之间；或者所述的密封结构包括与所述的侧板连接的本体，所述的大杂网带筛和/或小杂网带筛的边沿伸入到所述的本体和托架或者托辊之间。
  6. 根据权利要求1或2或3或4或5所述的先清大杂的网带平回筛，其特征是：所述的导粮机构为倾斜的导粮板或者带式输送机，所述的大中杂网带筛筛面下面和/或所述的小杂网带筛筛面下面装有托辊，所述的平回机构的回转半径为4-11mm,回转频率为300-450转/分钟。
  7. 根据权利要求1或2或3或4或5或6所述的先清大杂的网带平回筛，其特征是：所述的大杂筛为环形网带筛，所述的大中杂网带筛的筛面角度为0-4度，所述的大中杂网带筛的筛孔尺寸大于被筛分粮食尺寸的1.5倍以上，所述的小杂网带筛为环形的具有复合层的筛面，所述的小杂网带筛的筛面角度为0-5度，所述的小杂网带筛的筛孔尺寸小于被筛分粮食尺寸的0.8倍以下，所述的大中杂网带筛和所述的小杂网带筛分别套在两端所述的滚筒上，一侧所述的滚筒连接所述的驱动机构，所述的滚筒和所述的托辊的工作面均有挂胶。
  8. 根据权利要求1或2或3或4或5或6或7所述的先清大杂的网带平回筛，其特征是：所述的大中杂网带筛中装有输送板，所述的输送板为一组平行的导流斜板或者向两侧出料的出料斜板，当采用导流斜板时，位于下层的所述的大中杂网带筛的出口方向装有大杂输出机构。
  9. 根据权利要求1或2或3或4或5或6或7或8所述的先清大杂的网带平回筛，其特征是：所述的小杂网带筛为一组，所述的小杂网带筛中装有倾斜的出杂滑板，所述的出杂滑板沿网带走向倾斜形成v型结构或者向网带两侧倾斜形成倒v型结构，所述的出杂滑板如果是v形结构，则底部具有螺旋排杂机构，所述的小杂网带筛和/或所述的大中杂网带筛装有清理辊或者清理刷，所述的小杂网带筛为一组，分别为大颗粒粮食网带筛、小颗粒粮食网带筛，所述的导流斜板底部具有改向板。
  10. 一种利用权利要求1-9之一所述的先清大杂的网带平回筛进行粮食除杂的方法，其特征是：启动网带筛和平回机构，粮食首先落入到大杂网带筛上，在网带的直行和回转机构的圆运动合成的螺旋运动轨迹下进行筛理，大杂网带筛的筛面的两侧分别搭在密封结构上，密封结构和侧板相连，有效阻挡筛余物大杂落下，大杂作为筛余物前行排出；筛下物 经导向板进入到小杂网带筛，在网带的直行和回转机构的圆运动合成的螺旋运动轨迹下进行筛理，小杂网带筛的筛面的两侧也分别搭在其两侧的密封结构上，小杂网带筛两侧的密封结构也和侧板相连，有效阻挡筛余物粮食落下，粮食作为筛余物前行汇集入仓，筛下物小杂聚集排出。
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