CN209363007U - A kind of elbow type pneumatic separation device for grain cleaning - Google Patents

Abstract

A kind of elbow type pneumatic separation device for grain cleaning, it is characterized by: it includes that the partition between inner and outer pipe is arranged in a manner of being arranged symmetrically as pneumatic separation device into the inner tube of grain grain downflow tube, outer tube and along inner and outer pipe axis, the annular space between inner and outer tubes is divided into two parts by the partition；The outer tube be section be square structure and to the inclined elbow of upper side, the sloping portion top of outer tube is provided with the air inlet that the space between inner and outer pipe is connected；Said inner tube is that cross sectional shape is identical with outer tube cross sectional shape to the inclined elbow of upper side, the upper end is extended to except outer tube inclination port as the connection nozzle with standard grain downflow tube in a manner of tilting upward extension, and lower end vertical component is deep into the middle and lower part of outer tube lumen；It is provided with four blocks of upper and lower, left and right sealing plate between inclination port and the outer wall of square structure inner tube of square structure outer tube, wherein lower sealing plate is porous sieve plate, the air inlet as pneumatic separation device.

Description

A kind of elbow type pneumatic separation device for grain cleaning

Technical field

The utility model relates to miscellaneous separation problems light into raw grains such as grain processing plant, warehouses, belong to grain processing, storehouse Store up technical field.The device is installed on the grain downflow tube of dressing shop, with higher when being flowed in grain downflow tube using grain Grain grading caused by speed captures and the dust in separation grain, light miscellaneous.The device volume is small, is not take up floor space, And have the function of in selection by winnowing grain light miscellaneous, thus it has a extensive future.

Background technique

Grain will carry out a series of cleaning process, clean out and be mingled in grain before processing or before storage of putting in storage Various impurity.Cleaning equipment mainly has screen equipment, pneumatic separator, removes stone equipment, magnetic plant etc..These equipment are generally all Concentrated setting is in the dressing shop of grain processing plant or the work tower of grain storage enterprise.Each cleaning equipment, conveying equipment it Between connected by grain downflow tube.

Since there is rubbing between grain and elephant trunk inner wall, grain and grain when flowing in grain downflow tube for grain It wipes, automatic classification phenomenon present in extruding and collision effect and Flowing of Grain, the induction generated when along with Flowing of Grain The aerodynamic effect of air leads to be mingled in the light silt particle that is miscellaneous, being attached on grain surface etc. in grain in grain downflow tube Dust is all easy to leave grain mainstream or particle, flies upward into elephant trunk above grain stream or is stored in elephant trunk bottom with Flowing of Grain.

Summary of the invention

The purpose of this utility model is exactly to be directed to shortcoming in the presence of the above-mentioned prior art, based on dressing shop or Flow feature of the grain in elephant trunk in work tower and a kind of elbow type pneumatic separation device for grain cleaning is provided.This is practical new The elbow type pneumatic separation device of type not only can reach the light miscellaneous purpose of selection by winnowing, simplify the cleaning technology of grain, while also having and not accounting for With mill floor area, saves floor space, is not take up the advantages of floor.

The purpose of this utility model can be realized by following technique measures:

The elbow type pneumatic separation device for grain cleaning of the utility model includes as pneumatic separation device into grain grain downflow tube Inner tube, outer tube and the partition between inner and outer pipe is set in a manner of being arranged symmetrically along inner and outer pipe axis, including the partition, The equidistant space of surrounding is formed between outer tube, and the annular space between inner and outer tubes is divided into two parts；The outer tube is Section be square structure and to the inclined elbow of upper side, be provided between inner and outer pipe on the sloping portion top of outer tube The air inlet that is connected of space；Said inner tube is that cross sectional shape is identical with outer tube cross sectional shape inclined curved to upper side Head, the upper end as the connection nozzle with standard grain downflow tube extended in a manner of tilting upward extension outer tube inclination port it Outside, lower end vertical component is deep into the middle and lower part of outer tube lumen；Inclination port and square structure inner tube in square structure outer tube Outer wall between be provided with four blocks of upper and lower, left and right sealing plate, wherein lower sealing plate is porous sieve plate, the air inlet as pneumatic separation device Mouthful.

The grain outlet of the vertical component lower part of outer tube described in the utility model is by gradually small rectangular collapsible tube greatly, outlet End matches with the size of standard grain downflow tube, cross sectional shape, to connect standard grain downflow tube.

The utility model is below the rectangular grain downflow tube port of vertical component of inner tube, on outer tube vertical component collapsible tube A pair of of spring pressure door is set in outer tube.When without grain, spring pressure door is closed under the action of the spring, when having grain, spring Formula pressure door is pressed off by grain.Purpose first is that generated on enhancing grain falling impacts to pressure door dust, it is light it is miscellaneous fly upward, just It in the selection by winnowing of air-flow, second is that preventing the induction air flows down with Flowing of Grain, is thus sucked away, reduces downstream and fall grain point powder The generation of dirt, while the air in elephant trunk downstream is also separated herein, prevents to flow up.

Wind a part of the discharge of air inlet described in the utility model is from the porous of the air inlet as pneumatic separation device Sieve plate, another part are the induction air draughts of the grain mainstream in the inner tube as grain downflow tube.

The effect of the partition be for prevent the porous sieve plate air inlet by downside into wind directly rise and flow into air draught Mouth walks short circuit, but forces and flow downward, and the grain stream for flowing through inner tube vertical component lower port is under selection by winnowing effect by grain Lightweight object in food is discharged with air-flow from air inlet.

When work, the air inlet for first opening elbow type pneumatic separation device carries out air draught, starts later into grain.Grain is by grain downflow tube When flowing into this elbow type pneumatic separation device, since acceleration of gravity acts on, grain constantly accelerates in elephant trunk.When flowing to elbow When place, due to duct orientation sudden change, grain on the vertical pipe of higher speed impacts to elbow and pressure door on, grain Friction between particle is eaten, hits and squeezes, so that the silt particle, part shell skin and grain mainstream between grain, on surface are de- From, and the aerodynamic effect of the air-flow of present apparatus inner tissue walks the light miscellaneous band such as these silts, shell skin, to play selection by winnowing work With.

The beneficial effects of the utility model are as follows:

1. this pneumatic separation device utilizes movement characteristic of the grain in grain downflow tube elbow, tissue air-flow selection by winnowing is separated in grain Dust, shell skin etc. it is light miscellaneous.

2. this pneumatic separation device is mounted on the bend part of grain downflow tube, it is not take up mill floor area.

3. this pneumatic separation device covers upper exterior tube and partition, sealing plate, pressure door using a part of grain downflow tube as inner tube, again Deng booster action, it is gently miscellaneous that selection by winnowing is carried out to the grain that flows in grain downflow tube.

Detailed description of the invention

The structure chart of Fig. 1 the utility model.

Fig. 2 is the cross-sectional view of the M-M of Fig. 1.

Specific embodiment

The utility model is further described below with reference to embodiment (attached drawing):

The elbow type pneumatic separation device for grain cleaning of the utility model includes as pneumatic separation device into grain grain downflow tube Inner tube A, outer tube B and the partition C, the partition C being arranged in a manner of being arranged symmetrically between inner and outer pipe along inner and outer pipe axis The equidistant space of surrounding is formed between inner and outer pipe, and the annular space between inner tube A and outer tube B is divided into two parts；It is described Outer tube B be section be square structure and to the inclined elbow of upper side, the sloping portion top of outer tube B be provided with it is interior, The air inlet B2 that space between outer tube is connected；Said inner tube A is that cross sectional shape is identical with outer tube cross sectional shape on side The inclined elbow in side, the upper end extends to outer tube B as the connection nozzle with standard grain downflow tube in a manner of tilting upward extension It tilts except port, lower end vertical component is deep into the middle and lower part of outer tube B lumen；Square structure outer tube B inclination port with Four pieces of upper and lower, left and right sealing plate B1 is provided between the outer wall of square structure inner tube A, wherein lower sealing plate is porous sieve plate, as The air inlet of pneumatic separation device.

The grain outlet of the vertical component lower part of outer tube B described in the utility model is by gradually small rectangular collapsible tube greatly, out Mouth end matches with the size of standard grain downflow tube, cross sectional shape, to connect standard grain downflow tube.

The utility model is below the rectangular grain downflow tube port of vertical component of inner tube A, on outer tube B vertical component collapsible tube Outer tube B in a pair of of spring pressure door B3 is set.When without grain, spring pressure door B3 is closed under the action of the spring, there is grain When, spring pressure door B3 is pressed off by grain.Purpose is first is that the dust, light miscellaneous generated on enhancing grain falling impacts to pressure door Fly upward, convenient for the selection by winnowing of air-flow, second is that preventing the induction air flows down with Flowing of Grain, be thus sucked away, under reduction Trip falls the generation of grain point dust, while the air in elephant trunk downstream is also separated herein, prevents to flow up.

Wind a part of the discharge of air inlet B2 described in the utility model is from the more of the air inlet as pneumatic separation device Hole sieve plate, another part are the induction air draughts of the grain mainstream in the inner tube as grain downflow tube.

The effect of the partition C be for prevent the porous sieve plate air inlet by downside into wind directly rise and flow into air draught Mouth walks short circuit, but forces and flow downward, and the grain stream for flowing through inner tube A vertical component lower port will under selection by winnowing effect Lightweight object in grain is discharged with air-flow from air inlet B2.

Claims (3)

1. a kind of elbow type pneumatic separation device for grain cleaning, it is characterised in that: it includes slipping grain into grain as pneumatic separation device The inner tube (A) of pipe, outer tube (B) and the partition (C) between inner and outer pipe is set in a manner of being arranged symmetrically along inner and outer pipe axis, The partition (C) forms the equidistant space of surrounding between inner and outer pipe, and by the annular space between inner tube (A) and outer tube (B) It is divided into two parts；The outer tube (B) be section be square structure and to the inclined elbow of upper side, in the inclination of outer tube (B) Part top is provided with the air inlet (B2) that the space between inner and outer pipe is connected；Said inner tube (A) is for cross sectional shape and outside Tube section shape is identical to the inclined elbow of upper side, and the upper end is as the connection nozzle with standard grain downflow tube to tilt upward The mode of extension extends to except outer tube (B) inclination port, and lower end vertical component is deep into the middle and lower part of outer tube (B) lumen；? Four blocks of upper and lower, left and right sealing plate is provided between the inclination port of square structure outer tube (B) and the outer wall of square structure inner tube (A) (B1), wherein lower sealing plate is porous sieve plate, the air inlet as pneumatic separation device.

2. the elbow type pneumatic separation device according to claim 1 for grain cleaning, it is characterised in that: the outer tube (B) The grain outlet of vertical component lower part be by gradually small rectangular collapsible tube greatly, size, the section shape of outlet end and standard grain downflow tube Shape matches, to connect standard grain downflow tube.

3. the elbow type pneumatic separation device according to claim 1 for grain cleaning, it is characterised in that: in inner tube (A) A pair of of spring is set in the outer tube (B) below the rectangular grain downflow tube port of vertical component, on outer tube (B) vertical component collapsible tube Pressure door (B3).