WO2019091334A1 - 大中杂网带筛在上的网带平回筛及其进行粮食除杂的方法 - Google Patents

大中杂网带筛在上的网带平回筛及其进行粮食除杂的方法 Download PDF

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Publication number
WO2019091334A1
WO2019091334A1 PCT/CN2018/113572 CN2018113572W WO2019091334A1 WO 2019091334 A1 WO2019091334 A1 WO 2019091334A1 CN 2018113572 W CN2018113572 W CN 2018113572W WO 2019091334 A1 WO2019091334 A1 WO 2019091334A1
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Prior art keywords
screen
mesh belt
mesh
medium
small
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PCT/CN2018/113572
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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 WO2019091334A1 publication Critical patent/WO2019091334A1/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 mesh belt flat return screen with strong processing capacity, large processing capacity, low construction height, low construction cost, self-clearing and method for removing impurities.
  • the utility model relates to a mesh belt flat screen which is sieved on a large medium and medium mesh belt, and the composition comprises a mesh belt flat return screen, the composition comprising: a sieve frame, wherein the sieve frame is connected to the sieve box by a boom or a rocker or a pendulum rod
  • 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, the small miscellaneous a meshing slide having an inclined surface below the screen surface of the mesh belt screen, the large medium mesh screen and/or the small mesh screen having a rib, and the lower part of the large medium mesh screen is equipped with a lower portion
  • the food guiding mechanism, the large and medium mesh screen and the small mesh screen are connected to the driving mechanism.
  • the large medium mesh screen is screened on the upper mesh belt, and the rib is a polymer barrier plate fixed on both sides of the mesh belt, and the polymer barrier is s-shaped or zigzag-shaped elastic With or a set of butted baffles or a set of staggered baffles.
  • the large medium mesh screen is screened on the upper mesh belt, and the food guiding mechanism is an inclined grain guiding plate or a belt conveyor, and the large and medium mesh belt is arranged under the sieve surface.
  • a roller is arranged under the roller and/or the small mesh screen, and the turning mechanism has a radius of gyration of 4-11 mm, and the rotating frequency is 300-450 rpm.
  • the large medium mesh screen is screened on the upper mesh belt, and the large medium mesh screen comprises a set of metal screens arranged in sequence or wire braided or stamped into a ring.
  • the mesh belt screen surface, the sieve angle of the large medium mesh screen is 0-4 degrees, and the sieve hole of the large medium mesh screen is larger than 1.5 times of the grain size, the small mesh
  • the screen comprises a set of metal screens arranged in sequence or a wire braided or stamped endless belt, the small mesh screen comprising a composite screen surface, the screen angle of the small mesh screen At 0-5 degrees, the mesh of the small mesh screen is less than 0.8 times the grain size.
  • the large medium mesh screen is screened on the upper mesh belt, and the endless conveyor belt is sleeved on the rollers at both ends, the roller has a blocking edge, and the roller on one side connects the driving The mechanism, the working surface of the roller and/or the roller has a glue.
  • the large medium mesh screen is screened on the upper mesh belt, and the large medium mesh screen is provided with a conveying plate, and the conveying plate is a set of parallel guiding inclined plates or two
  • the discharge swash plate of the side discharge is provided with a large impurity output mechanism in the outlet direction of the large and medium mesh screen of the lower layer when the swash plate is used.
  • the large medium mesh screen is sieved on the upper mesh belt, and the small mesh belt sieve is a group, and the second small mesh belt is sieved from the bottom to the top, the
  • the small mesh screen is equipped with a slanted and outgoing slippery slide, and the detached slide is inclined along the mesh belt or inclined to both sides of the mesh belt to form an inverted v-shaped structure, and the hybrid skateboard inclined along the mesh belt is
  • the v-shaped structure has a spiral discharge mechanism at the bottom, and the small mesh belt screen and/or the large medium mesh screen is equipped with a cleaning roller or a cleaning brush.
  • the large medium mesh screen is screened on the upper mesh belt, and the small mesh belt sieve is a group, which is a large grain grain mesh sieve, a small grain grain mesh sieve, and the guide
  • the bottom of the swash plate has a reversing plate, and the deflecting plate is used to perform selective diversion.
  • the utility model relates to a method for removing grain by using a mesh belt flat screen on the upper and middle mesh belt screen, and a driving mechanism for driving the belt belt to operate in a circular motion and a flat returning mechanism for the flat movement of the screen box to form a flat return
  • the compound movement mode of movement and net belt straight movement, the mixture including grain after threshing is put into the sieve of the large and medium mesh belt, spirally advanced under the rules of the ribs on both sides, and goes straight through the mesh belt.
  • the bumps of the peace and back movement, the screening of the large particles and debris, into the collection bin, the grain and small grains under the sieve through the grain guide into the small miscellaneous mesh screen, the bumps and peace back through the net belt straight process The rolling, sifting dust, dust, straw, fines and other small impurities, the grain as a sieve residue into the granary.
  • the large and medium mesh screen is screened on the upper mesh belt to carry out the method of grain removal, and the grain guide plate removes the large amount of grain and selectively guides the sieve surface of different size sieve holes.
  • the large and medium mesh belt screen of the invention has high output in the upper mesh belt back screen, and the same floor space, the single layer height processing rice single unit output can reach 50-300 tons per hour, and can be customized according to customers. Need to customize 2000 tons of extra large screen.
  • 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.
  • 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.
  • 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 idler roller is arranged under the sieve surface of the invention to prevent the sieve surface from sinking and deforming.
  • the traditional cleaning screen needs 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 hoist is high. Above 30 meters, the energy consumption required for equipment operation is high, so the overall cost is high.
  • the cleaning screen of the invention can remove large impurities and remove small and medium impurities, and a cleaning screen can replace the traditional multiple cleaning screen combination, and does not require a high working tower, which reduces the height of the grain lifting and simplifies the configuration. It saves energy and reduces costs.
  • 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, so that the undersize material and the grain can be entered from one end of the small miscellaneous sieve, and the whole process is sieved, so that the small miscellaneous can be more fully and sieved for a longer distance. Improve the sieving effect.
  • the large and medium mesh belt screen of the invention is provided with a conveying plate, wherein the conveying plate is a set of parallel guiding swash plates, which can effectively lengthen the length of the sifting and improve the screening quality, and is located when the swash plate is used.
  • the large-medium mesh belt screen of the lower layer is provided with a large impurity output mechanism in the outlet direction. According to the situation of sieving different plant straws, it is sometimes possible to use a discharge swash plate which discharges to both sides to prevent clogging in the secondary screening process.
  • 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 mesh belt screen of the invention combines a circular motion during travel to form a spiral track of grain, which significantly improves the screening effect. It cannot be ignored that in the flat back movement, the grain will inevitably roll to both sides, in order to In order to avoid the mixing of the sieve residue, the large medium mesh screen and/or the small mesh screen have a rib, and the screen surface of the invention adopts an s-shaped rib or a zigzag rib, and the rib is adopted.
  • the polymer barrier plate has elasticity in the length direction - that is, ductility, and can adapt to the linear or curved movement of the screen surface: it can effectively block the grain from scattering outside the screen surface during the plane movement, and expand the screen around the center when bending Turn the surface over the roller.
  • the ribs may also be discontinuous.
  • the present invention provides cross-section or overlapping ribs.
  • the upper portions of the ribs can be separated and unfolded from each other, so that the plane sieving movement can be realized.
  • the effect of blocking and circumferentially expanding when turning makes the ribs smoothly rotate through the drum with the screen surface.
  • the large and medium mesh screens are equipped with rollers and/or small mesh screens under the screen surface. The distance between the rollers and the rollers is generally between 0.3 and 0.8 meters.
  • the screen angle of the large medium mesh screen is 0-4 degrees, and the sieve hole of the large medium mesh screen is more than 1.5 times the grain size;
  • the screen angle of the mesh screen is 0-5 degrees, and the sieve hole of the small mesh belt sieve is smaller than 0.8 times of the grain size, so that the grain screening effect is the best.
  • 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 endless conveyor belt of the present invention is sleeved on the rollers at both ends to form a belt transmission structure, and the drum has a blocking edge, which can effectively overcome the deviation and drift phenomenon of the conveyor belt, and the roller and/or the idler roller There is glue on the work surface to increase friction.
  • 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 out-draft slide plate, and the splayed slide plate 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 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 mesh belt screen of the present invention is respectively provided with a large grain grain mesh screen, a small grain grain mesh screen, and a hinge at the bottom of the deflecting swash plate.
  • the redirection plate is manually diverted to the direction of the reversing plate for selective diversion, 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 driving mechanism of the driving belt with the ring running and the flat returning mechanism of the screen box moving back are started, and a compound movement mode of the flat back movement and the straight movement of the mesh belt is formed, and the mixture including the grain after the threshing is put into the mixture.
  • the large and medium mesh screen through the rolling of the net belt in the process of bumping and peaceful returning, the large particles of debris are screened and introduced into the collection bin.
  • the grain and small miscellaneous grains under the sieve pass through the grain guide to enter the small miscellaneous In the mesh belt screen, the rolling of the bumps and the flat back movement during the straight process of the mesh belt, the small impurities such as dust, dust and straw fines are screened, and the grain is used as the sieve residue to enter the granary.
  • Figure 1 is a schematic view of the structure of the product (with a grain guide).
  • Figure 2 is a left side view of Figure 1 (2 small miscellaneous screens).
  • 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 a schematic view of the structure of the screen box of the product (screw conveyor or small mesh screen as a conveying plate).
  • Figure 7 is a schematic view of the structure of the screen box of the product (2 small miscellaneous sieves, the inlet of the small miscellaneous sieve has a redirection plate 13).
  • 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 splinter slide, and the inlet of the small miscellaneous screen has an inlet distribution device 19).
  • Figure 9 is a left side view of Figure 8 (the split skateboard is an inverted v-shaped structure).
  • Figure 10 is a top plan view of the hybrid skateboard in an inverted v-shaped configuration with a staggered spiral in the middle.
  • Figure 11 is a schematic view of a small mesh belt screen structure with a rib (removal drive mechanism. Power input shaft 21).
  • Figure 12 is a schematic view of a small mesh belt screen structure of a composite screen surface (the circular portion in the middle removes the small mixed screen surface).
  • Figure 13 is a schematic view of a large and medium mesh belt screen structure with a rib (removal drive mechanism, power input shaft 21).
  • Figure 14 is a left side view of Figure 13.
  • Figure 15 is a schematic view of a small mesh belt screen structure (without coupling and drive).
  • Figure 16 is a schematic view of a large and medium mesh belt screen 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 structure of the s skirt.
  • Figure 19 is a plan view of Figure 18.
  • Figure 20 is a schematic view showing the structure of a butted baffle.
  • Figure 21 is a plan view of Figure 20.
  • Figure 22 is a schematic view showing the structure of a staggered baffle.
  • Figure 23 is a plan view of Figure 22.
  • Figure 24 is a schematic view showing the structure of a staggered baffle.
  • Figure 25 is a plan view of Figure 24.
  • Figure 26 is a schematic view showing the structure of an inlet distribution device. (24 is the grain entrance, 25 is the hopper of the inlet distribution device).
  • the mesh belt is screened on the upper mesh belt, and the composition 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 screen box is provided with a large medium mesh screen 3 and a small mesh screen 4, and the large medium mesh screen 3 is installed above the small mesh screen 4, and the screen box is connected flat.
  • the back motion mechanism 5 provides the screen box with a power source for circular motion in the screen box through the flat return motion mechanism, and the large and medium mesh belt is not required to fall on both sides in the flat back motion. Screens and/or small mesh screens have blocked ribs 6 on both sides.
  • the lower part of the large and medium mesh screen is equipped with a food guiding mechanism 7
  • the inlet of the small mesh screen is located at the lower end of the food guiding mechanism, so that the whole grain of the large and medium mesh screen is sieved and fully sieved on the small sieve, the large The medium mesh screen and the small mesh screen are connected to the driving mechanism 8, and the mesh belt is screened while performing the flat back movement.
  • the large and medium mesh belt screen of the embodiment 1 is screened on the upper mesh belt, and the rib is a polymer barrier plate fixed on both sides of the mesh belt, so that the rib can be drunk with the mesh belt and rotate the roller.
  • the polymer barrier plate 6 is continuous, such as s-shaped, or zigzag, or W-shaped barrier tape, may be made of nylon, plastic, rubber, etc.; may also be discontinuous
  • the baffles are, for example, a pair of butted baffles 6 or a set of staggered baffles 6, the bottoms of which may be connected between the bottoms of the discontinuous baffles, the upper portions being separate and movable to each other to form a fan shape.
  • the rubber side is added on both sides of the screen surface, so that the overall width is larger than the width of the channel.
  • the two sides are rolled up, and the channel is widened at the turn, and the baffle is naturally flattened and the screen surface is flattened and bent.
  • the large and medium mesh belt of the embodiment 1 or 2 is screened on the upper mesh belt, and the food guiding mechanism is an inclined grain guiding plate or a belt conveyor, and the large and medium mesh screen is sieved.
  • a roller 10 is mounted under the screen surface and/or the small mesh belt screen is provided with a roller 10 underneath.
  • the flat circular path motion of the screen box is formed by the movement of the polarization.
  • the slewing mechanism When rotating, the slewing mechanism has a radius of gyration of 4-11 mm, and the slewing frequency is 300-450 rpm.
  • the large medium mesh screen of the embodiment 1 or 2 or 3 is sieved on the upper mesh belt, and the large medium mesh screen comprises a set of metal sieves arranged in sequence or wire braiding.
  • the small mesh screen comprises a set of metal screens arranged in sequence or wire braided or stamped endless belts, the small mesh screen comprising composite screen surfaces
  • the sieve mesh angle of the small mesh screen is 0-5 degrees, and the sieve mesh of the small mesh belt sieve is less than 0.8 times of the grain size. Achieve the best screening results.
  • the upper belt mesh flat screen, the large medium mesh belt screen and the small miscellaneous mesh belt screen forming the endless belt are respectively placed on the rollers on both ends, the
  • the drum has a blocking edge 14 to avoid the deviation of the screen surface, and can also block the food from being released to some extent, and the one-side drum is connected to the driving mechanism as a power source for the screen surface movement--the driving wheel, the drum and / Or the working surface of the roller can be glued to ensure a stable friction coefficient.
  • the large medium mesh screen of the embodiment 1 or 2 or 3 or 4 or 5 is sieved on the upper mesh belt, and the large medium mesh screen is provided with a conveying plate 12, the conveying plate a set of parallel deflector swash plates (Fig. 3) or a discharge swash plate (Fig. 5) discharged to both sides, which is placed twice in the exit direction of the large and medium mesh screen of the lower layer.
  • the mesh belt screen works at the same time, and the upper part is generally equipped with an inlet distribution device 19. Considering that the bottom one small mesh belt screen can discharge the separated small impurities through the bottom plate, it will not be mixed into the grain, so the second bottom from the bottom
  • the small mesh belt is sifted, and the small mesh screen is equipped with a slanted and outgoing slide 17 which can be tilted along the mesh belt (Fig.
  • the bottom has a spiral discharge mechanism 18.
  • the small mesh screen and/or the large and medium mesh screens are provided with a polygonal cleaning roll or a cleaning brush 20 that intersects the screen surface after turning.
  • the large medium mesh belt of the embodiment 1 or 2 or 3 or 4 or 5 or 6 or 7 is sieved on the upper mesh belt, and the small hybrid mesh sieve may have different particle size according to the sieved grain.
  • a variety of mesh specifications respectively, for large grain grain mesh with sieve, small grain grain mesh with sieve and so on. If grain companies often need to change different types of grain cleaning, for example, granaries in the northeast often store large grains of corn, soybeans, and other small grain foods such as sorghum, rice, millet, and hazelnuts. Small mesh with a sieve.
  • a reversing plate 13 is arranged at the bottom of the guiding swash plate, and which screen surface is selected by the reversing plate to perform selective guiding.
  • One piece of equipment can complete the screening of a variety of foods, sharing parts of large and medium mesh screens and screen boxes, greatly reducing construction costs.
  • the mesh belt is screened on the upper mesh screen, and the composition comprises: a sieve frame, wherein the sieve frame is connected to the sieve box by a boom or a rocker or a swing rod, and the sieve box is provided with a small set. a mesh screen and a large medium mesh screen, wherein the small mesh screen and the large medium mesh screen are provided with a flat return mechanism, and the small mesh screen has 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 of grain inlets, each layer is small
  • the sieve corresponds to 1-3 said feeding openings, the sieve surface of the small mesh screen is intersected with the hard wire cleaning roller, and the side of the small mesh screen is equipped with suction suction. Dust equipment.
  • the medium and large mesh screen is screened on the upper mesh belt, and the composition comprises: a sieve frame, wherein the sieve frame is connected to the sieve box by a boom or a rocker or a rocker, and the feature is: the sieve box
  • the utility model comprises a set of small mesh belt screen and a large medium mesh screen, wherein the small miscellaneous mesh screen and the large medium mesh screen are provided with a flat return mechanism, and the small miscellaneous mesh screen is below the sieve surface a skid plate having an inclined 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 of grain inlets.
  • Each layer of small miscellaneous sieve corresponds to 1-3 said feeding openings, the sieve surface of said small miscellaneous mesh screen is intersected with the hard wire cleaning roller, and one side of said small miscellaneous mesh screen is installed There are suction and vacuum equipment.
  • the large amount of debris in the sieve is introduced into the collection bin.
  • the grain and small miscellaneous grains under the sieve enter the small miscellaneous mesh belt through the grain guide plate, and the dust is sifted through the rolling of the net belt during the straight process.
  • Small impurities such as dust and straw fines, grain as sieve residue into the granary.
  • the large and medium mesh belt screen of the embodiment 10 is subjected to the method of grain removal in the upper mesh belt back screen, and the grain guide plate removes the large grain-selective meshing screens of different size sieve holes.

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Abstract

公开了一种大中杂网带筛在上的网带平回筛及其进行粮食除杂的方法。网带平回筛包括：筛架(1)，筛架(1)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)，大中杂网带筛(3)装在小杂网带筛(4)上方，筛箱(2)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，大中杂网带筛(3)和/或小杂网带筛(4)的两侧带有阻挡的挡边(6)，大中杂网带筛(3)的下部装有导粮机构(7)，小杂网带筛(4)的入口位于导粮机构(7)的下端，使得整个大中杂网带筛(3)筛分下来的粮食在小杂网带筛(4)上全长充分筛理，大中杂网带筛(3)和小杂网带筛(4)均连接驱动机构(8)。网带平回筛用于粮食除杂。

Description

大中杂网带筛在上的网带平回筛及其进行粮食除杂的方法 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，建设高度小、建设费用低、能够自清的网带平回筛及其进行粮食除杂的方法。
一种大中杂网带筛在上的网带平回筛，其组成包括网带平回筛，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，所述的大中杂网带筛和/或小杂网带筛带有挡边，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。
所述的大中杂网带筛在上的网带平回筛，所述的挡边为固定在网带两边的高分子阻隔板，所述的高分子阻隔板为s形或之字形的弹性带或者一组对接的挡板或者一组交错的挡板。
所述的大中杂网带筛在上的网带平回筛，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装有托辊和/或所述的小杂网带筛筛面下面装有托辊，所述的回转机构的回转半径4-11mm,所述的回转频率为300-450转/分钟。
所述的大中杂网带筛在上的网带平回筛，所述的大中杂网带筛包括一组金属筛片顺次排列的筛面或金属丝编结形成的或者冲压成的环形网带筛面，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大于粮食尺寸的1.5倍以上，所述的小杂网带筛包括一组金属筛片顺次排列或金属丝编结形成的或者冲压成的环形传送带，所述的小杂网带筛包括复合的筛面，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小于粮食尺寸的0.8倍。
所述的大中杂网带筛在上的网带平回筛，所述的环形传送带套在两端的滚筒上，所述的滚筒带有阻挡边，一侧所述的滚筒连接所述的驱动机构，所述的滚筒和/或所述的托辊的工作面有挂胶。
所述的大中杂网带筛在上的网带平回筛，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。
所述的大中杂网带筛在上的网带平回筛，所述的小杂网带筛为一组，自下而上第二个所述的小杂网带筛起，所述的小杂网带筛装有倾斜的出杂滑板，所述的出杂滑板沿网带倾斜、或者向网带两侧倾斜形成倒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，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。
所述的大中杂网带筛在上的网带平回筛，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，通过改向板，进行选择性导流。
一种利用所述的大中杂网带筛在上的网带平回筛进行粮食除杂的方法，启动驱动网带环形运行的驱动机构和筛箱平回运动的平回机构，形成平回运动和网带直行运动的复合运动模式，将脱粒后的包括粮食在内的混合物投入到大中杂网带筛中，在两侧挡边的规矩下螺旋前行，通过网带直行过程中的颠簸和平回运动的滚动，筛余的大颗粒杂物，导入收集仓，筛下的粮食和小杂通过导粮板进入到小杂网带筛中，通过网带直行过程中的颠簸和平回运动的滚动，筛下灰尘尘土秸秆细屑之类小杂物质，粮食作为筛余物进入粮仓。
所述的大中杂网带筛在上的网带平回筛进行粮食除杂的方法，导粮板将除去大杂的粮食选择性的导向不同大小筛孔的筛面。
本发明的有益效果：
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50-300吨，并且可以根据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，提升机较高，一般在30米以上，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。
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，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。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，以防止二次筛分过程堵塞。
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。
本发明的网带筛由于在行进中复合了圆运动，形成粮食的螺旋轨迹，显著提高了筛分效果，不可忽视的是平回运动中，粮食无可避免的会滚落到两侧，为了避免筛余物的混杂，所述的大中杂网带筛和/或小杂网带筛带有挡边，本发明的筛面上采用s形的挡边或者之字形挡边，挡边采用高分子阻隔板，长度方向具有弹性—即可延展性，能够适应筛面的直线或弯曲2种运动方式：在平面运动时能有效阻挡粮食散落到筛面以外，弯转时围绕中心展开随筛面转过滚筒。挡边也可以是不连续式的，例如本发明提供了截面对接的或者搭接的挡边，在弯转时，挡边之间上部可以相互分离、展开，因此都能实现平面筛分运动时阻挡、和弯转时圆周展开的效果，使得挡边能够随着筛面顺利转过滚筒。对于筛理面积比较大的设备，为了避免筛面因中部物料较多带来的问题，大中杂网带筛筛面下面装有托辊和/或小杂网带筛筛面下面装有托辊，托辊之间的距离一般在0.3-0.8米。
为了强化筛理效果，对于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大于粮食尺寸的1.5倍以上；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小于粮食尺寸的0.8倍，使得粮食筛分效果最佳。
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。
本发明所述的环形传送带套在两端的滚筒上，形成带传动结构，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，所述的滚筒和/或所述的托辊的工作面有挂胶，增加摩擦力。
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。
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。
本发明工作时，启动驱动网带环形运行的驱动机构和筛箱平回运动的平回机构，形成平回运动和网带直行运动的复合运动模式，将脱粒后的包括粮食在内的混合物投入到大中杂网带筛中，通过网带直行过程中的颠簸和平回运动的滚动，筛余的大颗粒杂物，导入收集仓，筛下的粮食和小杂通过导粮板进入到小杂网带筛中，通过网带直行过程中的颠簸和平回运动的滚动，筛下灰尘尘土秸秆细屑之类小杂物质，粮食作为筛余物进入粮仓。
附图说明：
附图1是本产品的结构示意图(带有导粮板)。
附图2是附图1的左视图(2个小杂筛)。
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7是本产品筛箱的结构示意图(2个小杂筛，小杂筛的入口具有改向板13)。
附图8是本产品筛箱的结构示意图(2个小杂筛，小杂筛中具有出杂滑板，小杂筛的入口具有入口分配装置19)。
附图9是附图8的左视图(出杂滑板为倒v型结构)。
附图10是出杂滑板为倒v型结构的俯视图，中间是出杂的螺旋。
附图11是带有挡边的小杂网带筛结构示意图(拆除驱动机构。动力输入轴21)。
附图12是复合筛面的小杂网带筛结构示意图(中间的圆形部分去除了小杂筛面)。
附图13是带有挡边的大中杂网带筛结构示意图(拆除驱动机构。动力输入轴21)。
附图14是附图13左视图。
附图15是小杂网带筛结构示意图(不带联轴器和驱动装置)。
附图16是大中杂网带筛结构示意图(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s裙边的结构示意图。
附图19是附图18的俯视图。
附图20是对接的挡板的结构示意图。
附图21是附图20的俯视图。
附图22是交错的挡板的一种结构示意图。
附图23是附图22的俯视图。
附图24是交错的挡板的一种结构示意图。
附图25是附图24的俯视图。
附图26是入口分配装置的结构示意图。(24是入粮口，25是入口分配装置的料斗)。
具体实施方式
实施例1：
大中杂网带筛在上的网带平回筛，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，所述的大中杂网带筛3装在所述的小杂网带筛4上方，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带有阻挡的挡边6，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所述的大中杂网带筛在上的网带平回筛，所述的挡边为固定在网带两边的高分子阻隔板，为了使挡边能够醉随网带转过滚筒，可以有多种方式，所述的高分子阻隔板6为连续的，比如s形，或之字形、或W形的阻隔带，可以采用尼龙、塑料、橡胶等材质；也可以做不连续的挡板例如一组对接的挡板6或者一组交错的挡板6，不连续挡板的的底部之间可以有连接，上部是分开的，可以相互运动展开成扇形。或者筛面两侧加橡胶边，使 得整体宽度大于通道宽度，在通道中是两边卷起向上，到了转弯处通道放宽，挡板自然落平和筛面一样，放平过弯。
实施例3：
实施例1或2所述的大中杂网带筛在上的网带平回筛，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装有托辊10和/或所述的小杂网带筛筛面下面装有托辊10。通过偏振的运动形成筛箱的平回圆轨迹运动。转动时，所述的回转机构的回转半径4-11mm,所述的回转频率为300-450转/分钟。
实施例4：
实施例1或2或3所述的大中杂网带筛在上的网带平回筛，所述的大中杂网带筛包括一组金属筛片顺次排列的筛面或金属丝编结形成的或者冲压成的环形网带筛面---构成环形传送带，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大于粮食尺寸的1.5倍以上；所述的小杂网带筛包括一组金属筛片顺次排列或金属丝编结形成的或者冲压成的环形传送带，所述的小杂网带筛包括复合的筛面，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小于粮食尺寸的0.8倍。实现最佳筛分效果。
实施例5：
根据实施例4所述的大中杂网带筛在上的网带平回筛，大中杂网带筛和小杂网带筛形成的环形传送带都分别套在两端的滚筒上，所述的滚筒带有阻挡边14，避免筛面偏离，也能一定程度上阻挡粮食脱出，一侧滚筒连接所述的驱动机构，做为筛面运动的动力源---主动轮，所述的滚筒和/或所述的托辊的工作面都可以有挂胶，保证维持稳定的摩擦系数。
实施例6：
实施例1或2或3或4或5所述的大中杂网带筛在上的网带平回筛，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(附图3)或者向两侧出料的出料斜板(附图5)，位于下层的所述的大中杂网带筛的出口方向装有二次杂质输出机构15。向两侧出料的出料斜板和侧壁之间具有出粮通道16。
实施例7：
根据权利要求1或2或3或4或5或6所述的大中杂网带筛在上的网带平回筛，所述的小杂网带筛为一组，如果超过2个小杂网带筛同时工作，上部一般装有入口分配装置19，考虑到最下面一个小杂网带筛可以通过底板将分离出的小杂排出不会混入粮食中，所以自下而上第二个所述的小杂网带筛起，所述的小杂网带筛装有倾斜的出杂滑板17，所述的出杂滑板可以沿网带倾斜(附图7)、或者换90度方向---向网带两侧倾斜形成倒v型结构(附图9)，从两侧出杂质，向两侧出杂质的位置也具有通道16。
如果出杂滑板相向设置并且沿网带倾斜----所述的出杂滑板是v形结构，则底部具有螺旋排杂机构18。
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在转弯后装有多边形的清理辊或者与筛面相贯的清理刷20。
实施例8：
实施例1或2或3或4或5或6或7所述的大中杂网带筛在上的网带平回筛，所述的小杂网带筛根据筛分粮食颗粒大小不同可以有多种网孔规格，分别为大颗粒粮食网带筛、小颗粒粮食网带筛等等。如果粮食企业经常需要更换不同的粮食清理种类，比如东北的粮仓经常在储藏玉米、大豆等大颗粒粮食、和高粱、水稻、谷子、糜子等小颗粒粮食之间更换品种，可以设置不同的筛孔的小杂网带筛。在所述的导流斜板底部装有改向板13，通过改向板选择进入到哪一个筛面，进行选择性导流。一台设备可以完成多种粮食的筛分，共享大中杂网带筛和筛箱等部分，大幅度的减少建造成本。
实施例9：
大中杂网带筛在上的网带平回筛，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。
实施例10
大中杂网带筛在上的网带平回筛，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，其特征是：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。
实施例11
一种实施例1-10之一所述的大中杂网带筛在上的网带平回筛进行粮食除杂的方法，启动驱动网带环形运行的驱动机构和筛箱平回运动的平回机构，形成平回运动和网带直行运动的复合运动模式，将脱粒后的包括粮食在内的混合物投入到大中杂网带筛中，通过网带直行过程中的颠簸和平回运动的滚动，筛余的大颗粒杂物，导入收集仓，筛下的粮食和小杂通过导粮板进入到小杂网带筛中，通过网带直行过程中的颠簸和平回运动的滚动，筛下灰尘尘土秸秆细屑之类小杂物质，粮食作为筛余物进入粮仓。
实施例11：
实施例10所述的大中杂网带筛在上的网带平回筛进行粮食除杂的方法，导粮板将除去大杂的粮食选择性的导向不同大小筛孔的筛面。

Claims (10)

  1. 一种大中杂网带筛在上的网带平回筛，其组成包括网带平回筛，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，其特征是：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，所述的大中杂网带筛和/或小杂网带筛带有挡边，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所述的大中杂网带筛在上的网带平回筛，其特征是：所述的挡边为固定在网带两边的高分子阻隔板，所述的高分子阻隔板为s形或之字形的弹性带或者一组对接的挡板或者一组交错的挡板。
  3. 根据权利要求1或2所述的大中杂网带筛在上的网带平回筛，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装有托辊和/或所述的小杂网带筛筛面下面装有托辊，所述的回转机构的回转半径4-11mm,所述的回转频率为300-450转/分钟。
  4. 根据权利要求1或2或3所述的大中杂网带筛在上的网带平回筛，其特征是：所述的大中杂网带筛包括一组金属筛片顺次排列的筛面或金属丝编结形成的或者冲压成的环形网带筛面，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大于粮食尺寸的1.5倍以上，所述的小杂网带筛包括一组金属筛片顺次排列或金属丝编结形成的或者冲压成的环形传送带，所述的小杂网带筛包括复合的筛面，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小于粮食尺寸的0.8倍。
  5. 根据权利要求4所述的大中杂网带筛在上的网带平回筛，其特征是：所述的环形传送带套在两端的滚筒上，所述的滚筒带有阻挡边，一侧所述的滚筒连接所述的驱动机构，所述的滚筒和/或所述的托辊的工作面有挂胶。
  6. 根据权利要求1或2或3或4或5所述的大中杂网带筛在上的网带平回筛，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。
  7. 根据权利要求1或2或3或4或5或6所述的大中杂网带筛在上的网带平回筛，其特征是：所述的小杂网带筛为一组，自下而上第二个所述的小杂网带筛起，所述的小杂网带筛装有倾斜的出杂滑板，所述的出杂滑板沿网带倾斜、或者向网带两侧倾斜形成倒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，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。
  8. 根据权利要求1或2或3或4或5或6或7所述的大中杂网带筛在上的网带平回筛，其特征是：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，通过改向板，进行选择性导流。
  9. 一种利用权利要求1-8之一所述的大中杂网带筛在上的网带平回筛进行粮食除杂的方法，其特征是：启动驱动网带环形运行的驱动机构和筛箱平回运动的平回机构，形成平回运动和网带直行运动的复合运动模式，将脱粒后的包括粮食在内的混合物投入到大中杂网带筛中，在两侧挡边的规矩下螺旋前行，通过网带直行过程中的颠簸和平回运动的滚动，筛余的大颗粒杂物，导入收集仓，筛下的粮食和小杂通过导粮板进入到小杂网带筛中，通过网带直行过程中的颠簸和平回运动的滚动，筛下灰尘尘土秸秆细屑之类小杂物质，粮食作为筛余物进入粮仓。
  10. 根据权利要求9所述的大中杂网带筛在上的网带平回筛进行粮食除杂的方法，其特征是：导粮板将除去大杂的粮食选择性的导向不同大小筛孔的筛面。
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