CN207563224U - A kind of sieve powder host of high speed sieve powder equipment suitable for amino film plastics - Google Patents

Abstract

The utility model is the sieve powder host suitable for the high speed sieve powder equipment of amino film plastics.The sieve powder host of the equipment includes host housing, gravity flow screen and material guide device.The housing main body of host housing includes conveyor casing portion and sieving machine shell portion, and host housing is equipped with material inlet, fine powder outlet and coarse powder outlet.Material guide device is rotatably connected on housing main body, and its helical feed portion and Centrifugal dispersion portion are separately positioned in the conveyor casing portion and sieving machine shell portion of host housing, and the space formed between helical feed portion and conveyor casing portion forms the material helical feed channel of sieve powder host.Gravity flow screen is fixed on housing main body, is set in the inner cavity in sieving machine shell portion, and around the Centrifugal dispersion portion of material guide device.Equipment with above-mentioned sieve powder host is for efficiency to be higher when sieving powder, is substantially free of fine powder in coarse powder.

Description

A kind of sieve powder host of high speed sieve powder equipment suitable for amino film plastics

Technical field

The utility model is related to a kind of devices for sieving powder equipment, and in particular to a kind of powdery amino mould to after ball milling The sieve powder host for the high speed sieve powder equipment that plastic semi-finished product is sieved.

Background technology

Moulding compound is also referred to as thermosetting plastics, and the material that can be moulded is referred in the utility model.Amino film plastics Referred to as aminoplast is with the amino resins solid material as main component in synthetic resin, according to the coherent condition of product Difference, amino film plastics are divided into powdery moulding compound and graininess moulding compound.Since graininess moulding compound will not be taken in truck Bridge（It is not known as putting up a bridge toward falling）, therefore it is more suitable for the thermosetting plastics injection molding machine of automation.Amino resins is according to being used The difference of raw material, is generally divided into urea-formaldehyde resin, melamine resin and aniline-formaldehyde resin etc., and amino film plastics Then using corresponding amino resins as main component, using cellulose, minerals as filler, addition lubricant, curing agent, pigment and its His additive and be made, and be known as urea moulding material, melamine moulding compound and croak amine moulding compound successively.

There are two types of the manufacturing methods of traditional amino film plastics.The first is using one-step technology, second of use Be two-step process.It is illustrated by taking urea moulding material as an example below.

The one-step technology includes slurrying, vacuum mixing, crushing and sub-sieve（Or tabletting）And etc..The slurrying step Suddenly it is to add in formaldehyde and the methenamine as catalyst under stirring in pulping tank, after mixing, adds urea and made Slurry keeps temperature of charge below 40 DEG C so that and with urea addition reaction occurs for formaldehyde, generates monomethylol urea, and in system Interior introducing methylol groups.The vacuum mixing step refers to by filtering put slurries into blender, then in blender Remaining methenamine is added in, then adds in pigment, lubricant and other auxiliary agents, starts agitating paddle high-speed rotation so that formaldehyde Further addition reaction occurs with urea and generates dimethylol urea and generation dehydrating polycondensation reaction（Also referred to as precondensation Reaction）And generate the initial stage Lauxite of linear structure.Add the cellulose as filler（Typically pulverized small paper Piece）, after treating that slurries are fully absorbed by cellulose, heater so that when material temperature reaches 40 DEG C, start to vacuumize, vacuum Degree is maintained at below -85kPa so that moisture content to 4% or so.Material slowly up to rising to 75~80 DEG C, react 20 minutes by heating Afterwards, discharging.In this step, due to polycondensation reaction so that molecular weight is continuously increased, the viscosity of material also constantly increases.Continuous High-speed stirred in, material repeatedly conglomeration again disperseed repeatedly, finally as the essentially identical uniform particle of size.Described Pulverising step is to crush particulate material.The sub-sieve step is by sieving, takes between 20~100 mesh after pulverising step Particulate material as amino film plastics finished product.The tableting step is that the material after pulverising step is pressed into several millimeters greatly Small sheet finished product.Seen from the above description, although the process CIMS of one-step method is short, and seal is preferable, so as to the feature of environmental protection Preferably.But there are still it is more the technical issues of, first, in its vacuum mixing step, due to final aqueous of material to be caused Rate drops to 4% or so, therefore 5 hours will be up to the vacuum dehydration time by reacting, and so that energy consumption is higher.If second is that in vacuum The color control of material is bad in whipping step, and the color of obtained moulding compound finished product can not then adjust, and severe patient can cause This batch of product is scrapped.Third, for moulding compound finished product, if other indexs such as demolding performace, hardening time and moisture content are not It is suitble to user's requirement, then can not also adjusts, severe patient will also result in scrapping for product.

The technique of the two step method replaces vacuum mixing step, and true compared with one-step method, by vacuum kneading step After empty kneading step, the drying steps of the special drying equipment of use are increased rather than as one-step method directly true Moisture is sloughed using the method vacuumized in empty mixing apparatus.And then powdery finished product is obtained after crushing, ball milling, sieve powder, Or obtain graininess finished product after being granulated to the powder after sieve powder.Kneading in two step method, is conducive to addition and precondensation Reaction, due to the drying steps specially set, therefore in vacuum kneading, for the extent of reaction of moisture content and precondensation, has no Harsh requirement.Therefore, the time of vacuum kneading step can be shorter, so that energy consumption declines.In ball milling step, due to Related auxiliary material can be added in charging, and so that yield rate is higher.But the sieve powder step in two step method, effect Rate is relatively low, and environmental pollution is heavier.First, when ball mill goes out powder, fall in truck so that dust from flying.Second is that truck is transported to When on the operating platform of sieving machine, by manually with scoop add in sieving machine entrance, not only feed it is uneven, but also feed when raise out Dust it is larger to the Health cost of worker.Third, using roto-siofter, there is the problems such as leakage powder.

Chinese patent literature CN202238612U（Application No. is 201120381503.X）Disclose a kind of powder-granule material screening Equipment.What the document used is exactly roto-siofter.The document is in its specification【0018】Section is mentioned：" the body of the screening plant Upper setting shaft, Circular-cylinder sieve basket are connected in shaft, and shaft is arranged on the shaft core position of sieve basket, sieves and sieve is provided on the inside of basket Net, sieve are 5-10cm with sieve basket inner wall spacing, and sieving basket and sieve can move in the case where motor drives shaft with shaft rotation, Sieve is the sieve of rigid structure.Feed inlet is arranged on above sieve basket side and extends into the inner space of sieve, with this It is fed to screening plant.Coarse powder discharge port is arranged below the opposite side of sieve basket, and extends to gap between sieve and sieve basket, is used To accept the underproof coarse powder material that transfer is remained on sieve.After fine powder product material is by sieve, under screening plant The discharge port output of side, it is achieved thereby that the separation of qualified fine powder material and unqualified coarse fodder, coarse fodder reenter ball-grinding machine.Work When making, material is entered the inner space of sieve by feed inlet and is fallen on sieve, and with the rotation of sieve and sieve basket, material is sieving Online mobile, qualified fine powder fall to discharge port by the sky on sieve and export, and are certified products.Material scraping plate is when sieve rotates It is relatively moved with sieve, material scraping plate is scraped material is gathered on sieve pore so that material sieves by blade.After screening The coarse powder on sieve is remained in the other end for being transferred to sieve of sieve and is fallen in coarse powder discharge port, by defeated It send to ball mill and is ground again ".

The document also its【0017】Section is mentioned " is fixed with wiper, in the blade and sieve of wiper on the inside of sieve The spacing of side is 2-4mm.Fixed wiper is set on the inside of the sieve of screening plant ".These descriptions illustrate either wiper Or scraper plate is the component of fixed setting, and sieve is only the component rotated.The utility model people of the utility model has found： The net of crossing of powder is to squeeze out sieve, and then penetrate sieve under the effect of gravity under sieve rotation, by hairbrush by powder And fall in the discharge port below sieve and export, coarse powder then stays in and is moved to sieve on sieve with the rotation of sieve The other end of net.Because hairbrush and sieve be in very close to state in, for sieve, using can shortly damage. The rotating speed of sieve is generally per minute 130 and turns left the right side, therefore sieves that powder is less efficient, ratio containing fine powder is higher in coarse powder.

Invention content

The purpose of this utility model is to provide that a kind of simple and reliable for structure, service life is longer and that sieve powder efficiency is higher is suitable For the sieve powder host of the high speed sieve powder equipment of amino film plastics.

Realizing the technical solution of the utility model aim is：The sieve powder host of the high speed sieve powder equipment of the utility model includes Host housing, host housing include housing main body.According to order from left to right, host housing is set successively on its housing main body There are material inlet, fine powder outlet and coarse powder outlet, and the opening upwards of material inlet, the opening that fine powder outlet and coarse powder export is equal Downwards.It is structurally characterized in that：

Sieve powder host further includes gravity flow screen and material guide device, and sieves powder host equipped with material helical feed channel. The housing main body of host housing includes the conveyor casing portion for being connected with each other and communicating in the lateral direction and sieving machine shell portion.Material Guider includes the helical feed portion being connected with each other in the lateral direction and Centrifugal dispersion portion.Material guide device is rotatablely connected On the housing main body of host housing.The helical feed portion of material guide device and Centrifugal dispersion portion are separately positioned on host housing Conveyor casing portion and sieving machine shell portion in, and the space formed between the helical feed portion and conveyor casing portion is i.e. To sieve the material helical feed channel of powder host, which communicates with the inner cavity in sieving machine shell portion, and its material conveying outlet position In the right end of channel.Gravity flow screen is fixed on the housing main body of host housing, in the inner cavity in sieving machine shell portion, and is enclosed It is set around the Centrifugal dispersion portion of material guide device.Gravity flow screen includes sieve and equipped with the coarse powder kick-off positioned at right end lower part. Sieve is located at the top of the fine powder outlet of host housing, is located at the thick of host housing on the outside of the right of the coarse powder kick-off of gravity flow screen The top of powder outlet.

In the sieve powder host of above-mentioned high speed sieve powder equipment, the housing main body of host housing further includes fixed supporting seat.It is main The conveyor casing portion of machine shell is fixedly connected on from left side on the first member plate in sieving machine shell portion.Fixed supporting seat is arranged on sieving machine In shell portion, and it is fixedly connected on the first member plate in sieving machine shell portion from right side.

Gravity flow screen further includes the screen frame being integrated.Screen frame includes framework.Framework is rounded frame-shaped, and in its circumferential direction Outside is equipped with multiple frame mouths.Gravity flow screen is fixedly connected on by the left port of the framework of its screen frame on fixed supporting seat.

Sieve is fixed on the outer circumferential position of the framework of screen frame.Wherein, sieve is whole with high intensity Braided fiber net, and be fixed on the outer circumferential position of framework of screen frame, and cover the circumferential direction of the framework of screen frame All frame mouths in outside；Or sieve is divided into polylith stainless steel cloth, every piece of stainless steel cloth is weldingly fixed on the frame of screen frame At a corresponding frame mouth for the outer circumferential of body；Or sieve is divided into the stainless steel punching net of polylith, every piece of stainless steel punching net It is weldingly fixed at a corresponding frame mouth for the outer circumferential of the framework of screen frame；Or sieve is the stainless steel punching net of whole, It is welded and fixed and is covered on the outer circumferential of the framework of screen frame.

In the sieve powder host of above-mentioned high speed sieve powder equipment, the framework of the screen frame of gravity flow screen is identical including 3 to 6 diameters Circular lasso and 4 to 8 connecting ribs.Each lasso is set gradually according to order from left to right, and respective axis is total to Line.The axis is also the central axis of screen frame.Each connecting rib is connected between adjacent lasso and is set around circumferential etc. point, from And cause between 2 adjacent connecting ribs and corresponding 2 adjacent lassos around the corresponding of the outer circumferential for forming framework One frame mouth.One set snare of the leftmost side of the framework of the screen frame of gravity flow screen is the left port of framework.

The screen frame of gravity flow screen further includes right shell body.Right shell body is circular slab, and sealing welding is fixed on a set of the rightmost side On circle, and positioned at the right side of the lasso.The center of circle of right shell body is located on the central axis of screen frame, and the lower part of right shell body is equipped with arch Opening, coarse powder kick-off of the arcuate openings as gravity flow screen.

In the sieve powder host of above-mentioned high speed sieve powder equipment, the outer diameter of the right shell body of the screen frame of gravity flow screen is more than the outer of framework Diameter, and it is slightly less than the internal diameter in sieving machine shell portion.

The sieve powder host of above-mentioned high speed sieve powder equipment, further includes bearing.Material guide device includes rotary shaft.Rotary shaft According to order from left to right be divided into left end, left section and right section.The left end of rotary shaft stretches out host housing to the left Conveyor casing portion, left section of rotary shaft are located in the conveyor casing portion of host housing, and right section of rotary shaft is located at sieving machine shell portion In.Left section of the helical feed portion of material guide device including rotary shaft, clutch shaft bearing and helical blade.Clutch shaft bearing is connected to On left section of rotary shaft, and it is arranged on the left end position in conveyor casing portion of host housing.Helical blade is fixed in rotary shaft Left section on, and positioned at clutch shaft bearing right side.Corresponding material helical feed is formed between helical blade and conveyor casing portion Channel, the material helical feed channel namely the material helical feed channel for sieving powder host.

In the sieve powder host of above-mentioned high speed sieve powder equipment, the Centrifugal dispersion portion of material guide device includes the right side of rotary shaft Section, fixing bracket and guide plate；Guide plate has 2 to 4 pieces, these guide plates set up separately in the circumferential etc. around right section of rotary shaft It puts；Every piece of guide plate is fixedly connected on by least two fixing bracket on right section of rotary shaft, and is surrounded by the sieve of gravity flow screen Right section and each piece of guide plate setting of rotary shaft.

In the sieve powder host of above-mentioned high speed sieve powder equipment, guide plate is integrated, according to the axis apart from rotary shaft Closely with being far divided into flat part and guide part, guide part is made of polylith tooth plate namely the radially outer of guide part is in dentation.Respectively Block tooth plate is arranged in parallel each other, and is 10 to 15 degree relative to the angle of plane where flat part.

In the sieve powder host of above-mentioned high speed sieve powder equipment, the housing main body of host housing is integrated, conveyor casing Portion includes feed pipe and delivery pipe.Delivery pipe is edge with first member plate or so to the horizontally disposed horizontal tube body of cylindrical shape, defeated Send pipe have right output port, and the left and right at the top of it to middle part be equipped with material inlet.The first member plate of delivery pipe is equipped with circle Through-hole, and the left end of rotary shaft is stretched out to the left from the circular through hole.Feed pipe vertical is set, and is the cylinder that upper and lower side is open Shape tube body.Feed pipe by its lower port it is coupled from above delivery pipe setting material inlet position on, and feed pipe with it is defeated The inner cavity of pipe is sent to communicate.The upper port of feed pipe is the material inlet of host housing.The conveyor casing portion of host housing is by it The right output port of delivery pipe is connected on the first member plate in sieving machine shell portion, which is equipped with circular through hole, and rotary shaft passes through the circle Shape through-hole, and the circular through hole conveys outlet as the material of sieve powder host.Helical blade is located at the conveying in conveyor casing portion Guan Zhong, and the lower section of the material inlet positioned at delivery pipe.

In the sieve powder host of above-mentioned high speed sieve powder equipment, host housing further includes sealing cover.Sealing cover is arranged on sieve powder At the right-end openings of shell part.

The utility model has positive effect：（1）The sieve powder host of the screening plant of the utility model returns traditional Turn sieve be changed to fixed gravity flow screen after because sieve remains static, thus can cause the rotating speed of motor significantly It improves, 800 to 1200 turns per minute can be increased to by original 130 turns per minute, powder is in so high rotating speed（Such as 1000 rpm/min）Under, the centrifugal force caused by the rotation of guide plate drives and throws to sieve at a high speed, so that smaller The powder of particle voluntarily wears net and mistake, under this rotating speed so that in final coarse powder substantially without fine powder exist namely coarse powder in it is thin Powder content is reduced to only 0.1wt% to 0.2wt% by 10wt % of prior art or so.（2）The screening plant of the utility model Sieve powder host in setting screening host and during corresponding motor, except the utility model embodiment 1 is used on drive form Outside the scheme of one motor, the scheme of 2 motors of setting also can be used, retain the helical blade in embodiment 1, guide plate and consolidate Fixed rack, shaft driver, inner shaft, outer shaft actuator, outer shaft and right set axis in setting.The interior shaft driver is the first electricity Machine.First motor is then fixedly connected by corresponding shaft coupling with inner shaft.The left end position of inner shaft passes through 2 bearings（It can be described as Left end bearing）It is separately positioned on corresponding bearing block on the left end position in the conveyor casing portion of rack and host housing 1.It is described Outer shaft driver include the second motor, active driving member and passive driving member.Outer shaft and right set axis are hollow shaft.Outer shaft leads to It crosses other 2 bearings to be rotatably connected in the left-hand portion of inner shaft, and positioned at the right side of left end bearing, and is socketed on outer shaft Fixed helical blade and angular wheel or worm gear as passive driving member are fixedly connected in the left end of outer shaft.With this phase It is corresponding, then matched and angular wheel as active driving member or worm screw be set and is fixedly connected with active driving member Transmission shaft, and the motor shaft of the second motor is fixedly connected by corresponding shaft coupling with transmission shaft.In the right side of inner shaft Right set axis is then fixed by socket on position, each guide plate is then fixedly connected on by corresponding fixing bracket on right set axis.This double electricity The setting of machine drive scheme is enabled in the charging sieved, can by the rotating speed of the helical blade of the second motor control To be adjusted as required, so as to which the treating capacity preferably with the screening of the first motor control matches.（3）The utility model Sieve powder equipment sieve powder host gravity flow screen screen frame right shell body outer diameter be more than framework outer diameter so that sieve powder In the fine powder of sieving can be stopped on right side, fine powder is prevented to be mixed into coarse powder, is further ensured that the efficiency of screening.（4） No matter the utility model as sieve or is used using high strength fibre net as sieve or using stainless steel cloth Stainless steel punching net can complete the screening to powder as sieve.Compared with roto-siofter, the service life of sieve is prolonged significantly It is long.（5）Sieve powder equipment efficiency in use using the sieve powder host of the utility model is higher, and is strengthening related closed measure Afterwards, dust can be effectively prevent to raise out and leak powder problem.

Description of the drawings

Fig. 1 is the schematic diagram using the high speed sieve powder equipment of the sieve powder host of the utility model.

Fig. 2 is the schematic diagram of sieve powder host namely the structure diagram of the utility model in Fig. 1.

Fig. 3 is the schematic diagram in the conveyor casing portion of the host housing in Fig. 2, and institute's apparent direction is the left view direction of Fig. 2.

Fig. 4 is the A-A schematic cross-sectional views of Fig. 3.

Fig. 5 is the schematic diagram in the sieving machine shell portion of the host housing in Fig. 2, and institute's apparent direction is the left view direction of Fig. 2.

Fig. 6 is the B-B schematic cross-sectional views in Fig. 5.

Fig. 7 is the schematic diagram of the material guide device in Fig. 2.

The right side that Fig. 7-1 is Fig. 7 regards schematic diagram.

Fig. 8 is the schematic diagram of the guide plate in Fig. 7.

Fig. 9 is the schematic top plan view of Fig. 8.

Figure 10 is the close-up schematic view at a in Fig. 9.

Figure 11 is the schematic diagram of the screen frame in Fig. 2, and institute's apparent direction is the right apparent direction of Fig. 2.

Figure 12 is the C-C schematic cross-sectional views in Figure 11.

Figure 13 is the schematic diagram after the sieve in Fig. 2 is circumferentially unfolded.

Figure 14 is the partial enlarged view at b in Figure 13.

Label in above-mentioned attached drawing is as follows：

Sieve powder host 10, host housing 1, conveyor casing portion 11, feed pipe 11-1, material inlet 11-1-1, delivery pipe 11- 2, material inlet 11-2-1, right output port 11-2-2, circular through hole 11-2-3, sieving machine shell portion 12, the second circular through hole 12-1, carefully Powder exports 12-2, coarse powder outlet 12-3, fixed supporting seat 13, sealing cover 14, gravity flow screen 2, screen frame 21, framework 21-1, first set Enclose 21-1-1, the second lasso 21-1-2, third lasso 21-1-3, the 4th lasso 21-1-4, the 5th lasso 21-1-5, connecting rib 21-1-6, frame mouth 21-1-7, right shell body 21-2, coarse powder kick-off 21-2-1, handle 21-3, steel pipe 21-3-1, rubber sleeve 21-3- 2, sieve 22, sieve pore 22-1, material guide device 3, helical feed portion 3a, Centrifugal dispersion portion 3b, clutch shaft bearing 30, rotary shaft 31, helical blade 32, fixing bracket 33, guide plate 34, flat part 34-1, bolt hole 34-1-1, tooth plate portion 34-2, tooth plate 34- 2-1, motor 4, rack 5, electric machine support 51, sieving machine body support frame 52, fine powder discharge component 6, fine powder discharge bucket 61, fine powder packaging Bag 62, supporting plate 63, coarse powder discharge component 7, coarse powder discharge nozzle 71, coarse powder container bag 72, supporting plate 73, bearing 8.

Specific embodiment

（Embodiment 1）

See Fig. 2, the sieve powder host 10 of the high speed sieve powder equipment of the present embodiment is led including host housing 1, gravity flow screen 2 and material To device 3 and bearing 8, and powder host 10 is sieved equipped with material helical feed channel.Host housing 1 is stainless steel including material The housing main body of integral piece and sealing cover 14.Material guide device 3 includes rotary shaft 31 and helical blade 32.

Still see Fig. 2, the gravity flow screen 2 and material guide device 3 of sieve powder host 10 are arranged in host housing 1, and fixed Sieve 2 is fixedly connected on the housing main body of host housing 1.Material guide device 3 relative to the housing main body of host housing 1 with turn Dynamic mode is set.

See Fig. 1 and Fig. 2, the housing main body of host housing 1 includes conveyor casing portion 11, sieving machine shell portion 12 and fixed support Seat 13.Conveyor casing portion 11 and sieving machine shell portion 12 divide left and right settings, and the two is connected with each other and communicates in the lateral direction.Institute The conveyor casing portion 11 stated includes feed pipe 11-1 and delivery pipe 11-2.The sieving machine shell portion 12 includes first member plate.

See Fig. 3 and Fig. 4, according to order from left to right, host housing 1 is equipped with material inlet successively on its housing main body 11-1-1, fine powder outlet 12-2 and coarse powder outlet 12-3, and the opening upwards of material inlet 11-1-1, fine powder outlet 12-2 and thick The opening of powder outlet 12-3 is downward.Sieving machine shell portion 12 is inserted into the right part in the conveyor casing portion 11 of housing main body from left side In second circular through hole 12-1, and the outer surface sealed around for being fixedly welded on conveyor casing portion 11 of the second circular through hole 12-1 On.Fixed supporting seat 13 is arranged in sieving machine shell portion 12, and is fixedly connected on the first member plate in sieving machine shell portion 12 from right side. 14 detachable hermetic of sealing cover is fixed at the right-end openings in sieving machine shell portion 12.

See Fig. 5 and Fig. 6, the sieving machine shell portion 12 of host housing 1 is the structural member of horizontal cylindrical, sieving machine shell portion 12 First member plate is equipped with circular through hole, the material conveying outlet 12-1 for the sieve powder host 10 which is used as, sieving machine shell portion The major part of the left and right directions of 12 bottom is equipped with the through-hole of the fine powder outlet 12-2 as host housing 1, sieving machine shell portion 12 Bottom right end position be equipped with as host housing 1 coarse powder export 12-3 through-hole.The first member plate in sieving machine shell portion 12 The axis of circular through hole and the central axis in sieving machine shell portion 12 coincide.The circular through hole of the first member plate in sieving machine shell portion 12 Diameter is about the half of the internal diameter in sieving machine shell portion 12.

Still see Fig. 3 and Fig. 4, the delivery pipe 11-2 in helical feed casing portion 11 is set for edge with first member plate or so to level The horizontal tube body of cylindrical shape put, delivery pipe 11-2 have a right output port 11-2-2, and the left and right at the top of it to middle part be equipped with object Expect import 11-2-1.The middle position of the first member plate of delivery pipe 11-2 is equipped with circular through hole 11-2-3, and a left side for rotary shaft 31 End is stretched out to the left from circular through hole 11-2-3.Feed pipe 11-1 verticals are set, and are the cylindric tube bodies that upper and lower side is open. Feed pipe 11-1 is coupled from above on the position of the setting material inlet 11-2-1 of delivery pipe 11-2 by its lower port, and feeds Pipe 11-1 is communicated with the inner cavity of delivery pipe 11-2.The upper port of feed pipe 11-1 is the material inlet 11-1-1 of host housing 1. The conveyor casing portion 11 of host housing 1 closed is weldingly fixed on sieving machine shell portion 12 by the right output port 11-2-2 of its delivery pipe 11-2 First member plate on, and the right output port of delivery pipe 11-2 around sieving machine shell portion 12 first member plate circular through hole setting, rotary shaft 31 pass through the circular through hole of the first member plate, and the axis of the circular through hole and the axis of delivery pipe 11-2 coincide.Helical-blade Piece 32 is located in the delivery pipe 11-2 in conveyor casing portion 11, and the lower section of the material inlet 11-2-1 positioned at delivery pipe 11-2.

See Fig. 5 and Fig. 6, fixed supporting seat 13 is the stainless steel integral piece of horizontal cylindrical, in fixed supporting seat 13 Mandrel line and the central axis in sieving machine shell portion 12 coincide, and fixed supporting seat 13 is weldingly fixed on sieving machine shell portion by its left end On the right side of 12 first member plate, and the two is closed is fixedly connected.

See Fig. 1, Fig. 2, Fig. 5 and Fig. 6, gravity flow screen 2 includes screen frame 21 and sieve 22, and equipped with the coarse powder positioned at right end lower part Kick-off 21-2-1.Screen frame 21 is stainless steel integral piece, including framework 21-1, frame-shaped rounded framework 21-1, and in its week It is equipped with 24 frame mouth 21-1-7 outward.

Sieve 22 is fixed on the outer circumferential position of the framework 21-1 of screen frame 21.Sieve 22 is preferably whole tool There is the braided fiber net of high intensity, and be fixed on the outer circumferential position of framework 21-1 of screen frame 21, and covering sieve All frame oral area positions of the outer circumferential of the framework 21-1 of frame 21；Or sieve 22 divides for polylith stainless steel cloth, every piece is not Rust steel wire is weldingly fixed at the corresponding frame oral area position of the outer circumferential of the framework 21-1 of screen frame 21；Or sieve 22 divides For the stainless steel punching net of polylith, every piece of stainless steel punching net is weldingly fixed on a corresponding frame mouth for the outer circumferential of screen frame 21 At position；Or sieve 22 is the stainless steel punching net of whole, is welded and fixed and is covered in the circumferential direction of the framework 21-1 of screen frame 21 On outside.

Gravity flow screen 2 is located in the sieving machine shell portion 12 of host housing 1, gravity flow screen 2 by its screen frame 21 framework 21-1 a left side Port is fixedly connected on fixed supporting seat 13.

See Figure 11 and Figure 12, the screen frame 21 of gravity flow screen 2 further includes right shell body 21-2.Framework 21-1 is included according to from left to right The lasso that 5 diameters setting gradually of order are identical and axis overlaps, they are the first lasso 21-1-1, the second lasso 21-1-2, third lasso 21-1-3, the 4th lasso 21-1-4 and the 5th lasso 21-1-5, the axis namely frame of each lasso The axis of body 21-1 or the central axis of screen frame 21.Framework 21-1 is further included along left and right to 6 pieces of connecting ribs of setting 21-1-6.Every piece of connecting rib 21-1-6 is fixedly connected with 5 lassos set gradually, and around framework 21-1 axis according to It is separated by 60 degree etc. points of settings, so that forming corresponding 24 frame mouths between adjacent lasso and adjacent connecting rib 21-1-6 21-1-7.The length-width ratio of connecting rib 21-1-6 is 7：1, the width of connecting rib 21-1-6 and the second lasso 21-1-2, third The wide all same of lasso 21-1-3 and the 4th lasso 21-1-4.The right shell body 21-2 of screen frame 21 is circular slab, and sealing welding is fixed On the 5th lasso 21-1-5, and positioned at the right side of the 5th lasso 21-1-5.The center of circle of right shell body 21-2 is located in screen frame 21 On mandrel line, its underpart is equipped with arcuate openings, which is the coarse powder kick-off 21-2-1 of sieve 22, and the coarse powder pushes away Export the top for the coarse powder outlet 12-3 for being located at host housing on the outside of the right of 21-2-1.The outer diameter of right shell body 21-2 is more than framework The outer diameter of 21-1, and it is slightly less than the internal diameter in sieving machine shell portion 12（Less than 10 to 50mm）.

Gravity flow screen 2 further includes handle 23.Handle 23 is made of stainless steel tube 23-1 and rubber sleeve 23-2, and rubber sleeve 23-2 consolidates Surely it is socketed in the right end of stainless steel tube 23-1.The handle 23 1 of the present embodiment shares 3.3 handles 23 are evenly distributed on right gear On the right side of plate 21-2, and it is weldingly fixed on the right side of right shell body 21-2 by the left end of stainless steel tube 23-1.

See Figure 13 and Figure 14, sieve 22 is the plastic wire of the high intensity of rectangle, and 80 purposes are uniformly opened up on surface Circular hole 22-1 is penetrated through, the length of sieve 22 is identical with the length of the framework 21-1 of screen frame 21, width and the screen frame 21 of sieve 22 The perimeter of the side of framework 21-1 is identical.

See Fig. 2,22 rolled tight of sieve is on the outer circumferential of the framework 21-1 of screen frame 21, the left end of sieve 22 Portion is aligned with the left part of the first lasso 21-1-1 of screen frame 21, the right part of sieve 22 and the 5th lasso 21-1-5 of screen frame 21 Right part alignment, and the second lasso 21-1-2, third lasso 21-1-3 and the 4th lasso 21-1-4 of sieve 22 and screen frame 21 Corresponding position does not set sieve pore.The strap bundled fixed that sieve 22 is woven with screen frame 21 by 4 synthetic fiber in high strength, and 4 Root strap is located at the second lasso 21-1-2, the third lasso 21-1-3 and the 4th lasso 21-1-4 phases of sieve 22 and screen frame 21 respectively Corresponding position.Each strap respectively with the outer surface of sieve 22 be in close contact, and respectively by the second lasso 21-1-2, Groove limiting on third lasso 21-1-3 and the 4th lasso 21-1-4 is fixed.

Screen frame 21 is socketed in the outside of the fixed supporting seat 13 in sieving machine shell portion 12 by its first lasso 21-1-1 tight fit On wall namely gravity flow screen 2 is socketed to be fixedly connected on outside host by the left port of screen frame 21 with 13 tight fit of fixed supporting seat On the housing main body of shell 1.

See Fig. 7 and Fig. 7-1, material guide device 3 further includes clutch shaft bearing 30, fixing bracket 33 and guide plate 34, and The rotary shaft 31 of material guide device 3, helical blade 32, fixing bracket 33 and guide plate 34 material be stainless steel, first Bearing 30 is sealed-bearing.Rotary shaft 31 according to order from left to right be divided into left end, left section and right section.Rotary shaft 31 Left end stretch out the conveyor casing portion 11 of host housing 1, the left section of conveyor casing for being located at host housing 1 of rotary shaft 31 to the left In portion 11, right section of rotary shaft 31 is located in sieving machine shell portion 12.Corresponding, material guide device 3 is in the lateral direction It is divided into the driving portion being connected with each other successively, helical feed portion 3a and Centrifugal dispersion portion 3b.

The right end of the rotary shaft 31 is vacantly set.The clutch shaft bearing 30 is connected on left section of rotary shaft 31 And it is arranged on the left end position in conveyor casing portion 11 of host housing 1.Helical blade 32 is fixed on left section of rotary shaft 31, And it positioned at the right side of clutch shaft bearing 30, is oriented to so that left section of rotary shaft 31, clutch shaft bearing 30 and helical blade 32 form material The helical feed portion 3a of device 3.And it forms corresponding material helical feed between helical blade 32 and conveyor casing portion 11 to lead to The material helical feed channel of road, the material helical feed channel namely sieve powder host 10.

The guide plate 34 has 2 pieces, and the axis around rotary shaft 31 is set according to 180 degree etc. point is separated by.Every piece of guiding Plate 34 is fixedly connected on by least two fixing bracket 33 on right section of rotary shaft 31, and is exported positioned at the fine powder of host housing 1 The top of 12-2, so that right section of rotary shaft 31, fixing bracket 33 and guide plate 34 form the Centrifugal dispersion of material guide device 3 Portion 3b.Each piece of guide plate 34 and fixing bracket 33 are respectively positioned in the sieving machine shell portion 12 of host housing 1, and the right side of rotary shaft 31 Section and each piece of guide plate 34 surround setting by gravity flow screen 2.

See Fig. 8 to Figure 10, guide plate 34 is stainless steel integral piece, according to the near of the axis apart from rotary shaft 31 with it is remote and It is divided into flat part 34-1 and guide part 34-2, guide part 34-2 is made of polylith tooth plate 34-2-1 namely the diameter of guide part 34-2 It is in dentation to outside.Each piece of tooth plate 34-2-1 is arranged in parallel each other, and is relative to the angle of plane where flat part 34-1 10 to 15 degree.Between the surface of the week of the radially outer of the tooth plate 34-2-1 of guide plate 34 and framework 21-1 inwardly interval 5 to 10mm distances.The bolt hole 34-1-1 of 5 identical perforations of size, 5 bolts are offered on the flat part 34-1 of guide plate 34 Hole 34-1-1 is located along the same line, and along controlling to being uniformly distributed.

See Fig. 7 and Fig. 7-1, fixing bracket 33 is rectangle corrosion resistant plate, and the centre position of radially outer is equipped with perforation Bolt hole, and the size of bolt hole is opposite with the bolt hole 34-1-2 of perforation opened up on the flat part 34-1 of guide plate 34 It should.Each fixing bracket 33 is weldingly fixed in rotary shaft 31, and it is 2 groups that fixing bracket 33, which divides,（The group of fixing bracket 33 Number is identical with the block number of guide plate 34）, every group has 5.The rotation along controlling to being uniformly arranged on of every group of each fixing bracket 33 On axis 31, and 2 groups of fixing brackets 33 are arranged in rotary shaft 31 according to being separated by 180 degree decile between each other.

In other embodiments, the block number of guide plate 34 can also be configured with 4 pieces, corresponding, fixing bracket 33 Group number be then arranged to 4 groups, between 4 pieces of guide plates 34 according to interval 90 degree set, corresponding, 4 groups of fixing brackets 33 It is separated by 90 degree etc. points of settings, and be weldingly fixed in rotary shaft 31 according to every group of fixing bracket 33.

Still see Fig. 7 and Fig. 7-1, the bolt hole 34-1-1 of every piece of guide plate 34 and the corresponding set of fixation positioned at rotary shaft 31 Bolt hole on stent 33 corresponds, and every piece of guide plate 34 and the 5 of corresponding one group fixing brackets 33 are by passing through The bolt hole 34-1-1 of guide plate 34 is fixedly connected with the bolt of the bolt hole on fixing bracket 33.The left end of every piece of guide plate 34 Positioned at the right side of helical blade 32 and between rotary shaft 31 and fixed supporting seat 13.

（Application examples 1）

See Fig. 1, the sieve powder host 10 of above-described embodiment 1 is for high speed sieve powder equipment, suitable for the amino after ball milling The semi-finished product of moulding compound.The equipment further includes motor 4, rack 5, fine powder discharge component 6, coarse powder in addition to powder host 10 is sieved Discharge component 7 and bearing 8.Rack 5 includes electric machine support 51 and sieving machine body support frame 52.

Sieve powder host 10 and motor 4 are arranged in rack 5, and sieve housing main body of the powder host 10 by its host housing 1 It is fixed on sieving machine body support frame 52.Motor 4 is fixed on electric machine support 51, and motor 4 passes through shaft coupling and sieve powder The left end of the rotary shaft 31 of the material guide device 3 of host 10 is fixedly connected.Material guide device 3 is driven by motor 4 during use.

Shaft coupling and bearing 8 are connected in the left end of rotary shaft 31 in turn from left to right, so as to the left end of rotary shaft 31 Head becomes the driving portion of rotary shaft 31.The bearing 8 is arranged on by bearing block and corresponding connecting seat in rack 5.

See Fig. 1, fine powder discharge component 6 includes fine powder discharge bucket 61, fine powder container bag 62 and supporting plate 63.Fine powder discharge bucket 61 For the stainless steel integral piece of fang platform hull shape that upper end opening is big, lower ending opening is small, and it is fixedly connected from below by port thereon On the fine powder outlet 12-2 of host housing 1, and fine powder discharge bucket 61 is communicated with the inner cavity of host housing 1.Fine powder container bag 62 can fill amino film plastics powder 300kg.The bottom of supporting plate 63 is equipped with 2 perforation sockets.In use, the top of fine powder container bag 62 Opening is tightly pricked on the lower ending opening of fine powder discharge bucket 61, and fine powder container bag 62 is placed on the upper surface of supporting plate 23.

Still see Fig. 1, coarse powder discharging portion 7 includes coarse powder discharge nozzle 71, coarse powder container bag 72 and backing plate 73.Coarse powder discharge nozzle 71 It is fixedly connected on from below on the coarse powder outlet 12-2 of host housing 1 for the stainless steel integral piece of circular tube shaped, and by port thereon, And coarse powder discharge nozzle 71 is communicated with the inner cavity of host housing 1.Coarse powder container bag 72 can fill amino film plastics powder 300kg.Backing plate 73 bottoms are equipped with 2 perforation sockets.In use, the open top of coarse powder container bag 32 is tightly pricked in the lower end of coarse powder discharge nozzle 71 On mouth, and coarse powder container bag 72 is placed on the upper surface of backing plate 73.

See Fig. 1, the sieve powder method of above-mentioned high speed sieve powder equipment has steps of：

1. tightly being pricked the open top of fine powder container bag 62 on the lower ending opening of fine powder discharge bucket 61 and by coarse powder The open top of container bag 72 is tightly pricked in the lower port of coarse powder discharge nozzle 71.

2. starting motor 4, the material guide device 3 for driving sieve powder host 10 by motor 4 rotates so that its rotary shaft 31 with 800 to 1200 turns per minute of rotational speed, helical blade 32 is then with identical under the drive of the rotary shaft of high-speed rotation 31 Rotating speed rotates simultaneously.

3. by the material inlet 11-1-1 of the powder input host housing 1 of amino film plastics, under gravity, institute The powder stated enters after the feed pipe 11-1 of host housing 1 in delivery pipe 11-2, and falls to the helical blade being rotating On 32, immediately under the drive of helical blade 32 from left to right through be sieved powder host 10 material helical feed channel and enter sieve In powder shell part 12.

4. with the high-speed rotation of rotary shaft 31, guide plate 34 then generates centrifugal force with identical high-speed rotation, should be from Mental and physical efforts so that the powder into sieving machine shell portion 12 is moved to outer circumferential, thin in powder after powder is impinged upon on sieve 22 Powder squeezes through the sieve pore 22-1 of the sieve 22 of 75 to 85 mesh, and then flies to the inner wall of host housing 1, and the fine powder of beginning is bonded to described Inner wall on, after certain amount is run up to, a part therein can then drop downward into the subsequent fine powder of inner wall of constantly flying to In fine powder discharge bucket 61, finally fall in fine powder container bag 62.The powder on sieve 22 is impinged upon, coarse powder therein is then hindered Gear under the promotion of the tooth plate 34-2-1 of guide plate 34, moves from left to right on the inside of sieve 22, until coarse powder is by sieving The coarse powder kick-off 21-2-1 of frame 21 releases gravity flow screen 2, falls to immediately at the coarse powder outlet 12-3 in sieving machine shell portion 12, and fall Enter in coarse powder discharge nozzle 71, finally fall in coarse powder container bag 72.

5. when fine powder container bag 62 fills fine powder, then the fine powder container bag 62 of purseful is unlocked from fine powder discharge bucket 61 And side is placed on, then replace empty fine powder container bag 62.When coarse powder container bag 72 fills coarse powder, then by the coarse powder packaging of purseful Bag 72 is unlocked from coarse powder discharge bucket 71 and is placed on side, then replaces empty coarse powder container bag 72.By the fine powder container bag of purseful 62 send to finished room, and the ball milling workshop that the coarse powder container bag 72 of purseful is delivered to preceding road carries out ball milling again.

Claims (9)

1. a kind of sieve powder host of high speed sieve powder equipment, including host housing（1）, host housing（1）Including housing main body；According to Order from left to right, host housing（1）It is equipped with material inlet successively on its housing main body（11-1-1）, fine powder outlet（12- 2）It is exported with coarse powder（12-3）, and material inlet（11-1-1）Opening upwards, fine powder outlet（12-2）It is exported with coarse powder（12- 3）Opening it is downward；It is characterized in that：

Sieve powder host（10）Further include gravity flow screen（2）And material guide device（3）, and sieve powder host（10）Equipped with material spiral Transfer passage；Host housing（1）Housing main body include the conveyor casing portion that is connected with each other and communicates in the lateral direction（11） With sieving machine shell portion（12）；Material guide device（3）Including the helical feed portion being connected with each other in the lateral direction（3a）With from Heart dispersion portion（3b）；Material guide device（3）It is rotatably connected on host housing（1）Housing main body on；Material guide device（3） Helical feed portion（3a）With Centrifugal dispersion portion（3b）It is separately positioned on host housing（1）Conveyor casing portion（11）And sieving machine Shell portion（12）In, and the helical feed portion（3a）With conveyor casing portion（11）Between the space that is formed be to sieve powder master Machine（10）Material helical feed channel, the channel and sieving machine shell portion（12）Inner cavity communicate, and its material conveying outlet （12-1）Positioned at the right end of channel；Gravity flow screen（2）It is fixed at host housing（1）Housing main body on, positioned at sieving machine shell Portion（12）Inner cavity in, and around material guide device（3）Centrifugal dispersion portion（3b）Setting；Gravity flow screen（2）Including sieve （22）With equipped with the coarse powder kick-off positioned at right end lower part（21-2-1）；Sieve（22）Positioned at host housing（1）Fine powder outlet （12-2）Top, gravity flow screen（2）Coarse powder kick-off（21-2-1）Right on the outside of be located at host housing（1）Coarse powder outlet （12-3）Top.

2. the sieve powder host of high speed sieve powder equipment according to claim 1, it is characterised in that：Host housing（1）Shell Main body further includes fixed supporting seat（13）；Host housing（1）Conveyor casing portion（11）Sieving machine shell is fixedly connected on from left side Portion（12）First member plate on；Fixed supporting seat（13）It is arranged on sieving machine shell portion（12）In, and it is fixedly connected on sieve powder from right side Shell part（12）First member plate on；

Gravity flow screen（2）Further include the screen frame being integrated（21）；Screen frame（21）Including framework（21-1）；Framework（21-1）To be in round The frame-shaped of shape, and it is equipped with multiple frame mouths in its outer circumferential（21-1-7）；Gravity flow screen（2）By its screen frame（21）Framework（21-1） Left port be fixedly connected on fixed supporting seat（13）On；

Sieve（22）It is fixed at screen frame（21）Framework（21-1）Outer circumferential position on；Wherein, sieve（22）It is whole The braided fiber net with high intensity of body, and it is fixed at screen frame（21）Framework（21-1）Outer circumferential position on, And cover screen frame（21）Framework（21-1）Outer circumferential all frame mouths（21-1-7）；Or sieve（22）It is divided into more Block stainless steel cloth, every piece of stainless steel cloth are weldingly fixed on screen frame（21）Framework（21-1）Corresponding one of outer circumferential Frame mouth（21-1-7）Place；Or sieve（22）It is divided into the stainless steel punching net of polylith, every piece of stainless steel punching net is weldingly fixed on Screen frame（21）Framework（21-1）Outer circumferential a corresponding frame mouth（21-1-7）Place；Or sieve（22）Be whole not Become rusty steel punching net, is welded and fixed and is covered in screen frame（21）Framework（21-1）Outer circumferential on.

3. the sieve powder host of high speed sieve powder equipment according to claim 2, it is characterised in that：Gravity flow screen（2）Screen frame （21）Framework（21-1）Including the identical circular lasso of 3 to 6 diameters and 4 to 8 connecting ribs（21-1-6）；Each set Circle is set gradually, and respective axis collinear according to order from left to right；The axis is also screen frame（21）Central axis；Respectively Connecting rib（21-1-6）It is connected between adjacent lasso and around circumferential etc. point of setting, so that 2 adjacent dowels Plate（21-1-6）It is surrounded between corresponding 2 adjacent lassos and forms framework（21-1）Outer circumferential a corresponding frame mouth （21-1-7）；Gravity flow screen（2）Screen frame（21）Framework（21-1）One of leftmost side set snare be framework（21-1）'s Left port；

Gravity flow screen（2）Screen frame（21）Further include right shell body（21-2）；Right shell body（21-2）For circular slab, sealing welding is fixed on On one lasso of the rightmost side, and positioned at the right side of the lasso；Right shell body（21-2）The center of circle be located at screen frame（21）Central shaft On line, right shell body（21-2）Lower part be equipped with arcuate openings, the arcuate openings are as gravity flow screen（2）Coarse powder kick-off（21-2- 1）.

4. the sieve powder host of high speed sieve powder equipment according to claim 3, it is characterised in that：Gravity flow screen（2）Screen frame （21）Right shell body（21-2）Outer diameter be more than framework（21-1）Outer diameter, and be slightly less than sieving machine shell portion（12）Internal diameter.

5. the sieve powder host of the high speed sieve powder equipment according to one of claim 2 to 4, it is characterised in that：Further include bearing （8）；Material guide device（3）Including rotary shaft（31）；Rotary shaft（31）According to order from left to right be divided into left end, Left section and right section；Rotary shaft（31）Left end stretch out host housing to the left（1）Conveyor casing portion（11）, rotary shaft（31）'s Left section is located at host housing（1）Conveyor casing portion（11）In, rotary shaft（31）Right section be located at sieving machine shell portion（12）In；Object Expect guider（3）Helical feed portion（3a）Including rotary shaft（31）Left section, clutch shaft bearing（30）And helical blade（32）； Clutch shaft bearing（30）It is connected to rotary shaft（31）Left section on, and be arranged on host housing（1）Conveyor casing portion（11）A left side On the position of end；Helical blade（32）It is fixed in rotary shaft（31）Left section on, and positioned at clutch shaft bearing（30）Right side；Helical-blade Piece（32）With conveyor casing portion（11）Between form corresponding material helical feed channel, the material helical feed channel namely sieve Powder host（10）Material helical feed channel.

6. the sieve powder host of high speed sieve powder equipment according to claim 5, it is characterised in that：Material guide device（3）'s Centrifugal dispersion portion（3b）Including rotary shaft（31）Right section, fixing bracket（33）And guide plate（34）；Guide plate（34）Have 2 to 4 Block, these guide plates（34）Around rotary shaft（31）Right section in the circumferential decile set；Every piece of guide plate（34）Pass through at least 2 A fixing bracket（33）It is fixedly connected on rotary shaft（31）Right section on, and by gravity flow screen（2）Sieve（22）Around rotary shaft （31）Right section and each piece of guide plate（34）Setting.

7. the sieve powder host of high speed sieve powder equipment according to claim 6, it is characterised in that：Guide plate（34）It is integrated Part, according to apart from rotary shaft（31）Axis it is near with it is remote and be divided into flat part（34-1）And guide part（34-2）, guide part （34-2）By polylith tooth plate（34-2-1）Composition namely guide part（34-2）Radially outer be in dentation；Each piece of tooth plate（34-2- 1）It is arranged in parallel each other, and relative to flat part（34-1）The angle of place plane is 10 to 15 degree.

8. the sieve powder host of high speed sieve powder equipment according to claim 6, it is characterised in that：Host housing（1）Shell Main body is integrated, conveyor casing portion（11）Including feed pipe（11-1）And delivery pipe（11-2）；Delivery pipe（11-2）For tool There is edge of first member plate or so to the horizontally disposed horizontal tube body of cylindrical shape, delivery pipe（11-2）With right output port（11-2-2）, and Left and right at the top of it to middle part be equipped with material inlet（11-2-1）；Delivery pipe（11-2）First member plate be equipped with circular through hole （11-2-3）, and rotary shaft（31）Left end from the circular through hole（11-2-3）It stretches out to the left；Feed pipe（11-1）Vertical is set It puts, is the cylindric tube body that upper and lower side is open；Feed pipe（11-1）It is coupled from above in delivery pipe by its lower port（11-2） Setting material inlet（11-2-1）Position on, and feed pipe（11-1）With delivery pipe（11-2）Inner cavity communicate；Feed pipe （11-1）Upper port be host housing（1）Material inlet（11-1-1）；Host housing（1）Conveyor casing portion（11）By Its delivery pipe（11-2）Right output port（11-2-2）It is connected to sieving machine shell portion（12）First member plate on, the first member plate be equipped with circle Through-hole, rotary shaft（31）Across the circular through hole, and the circular through hole is as sieve powder host（10）Material conveying outlet （12-1）；Helical blade（32）Positioned at conveyor casing portion（11）Delivery pipe（11-2）In, and positioned at delivery pipe（11-2）Object Expect import（11-2-1）Lower section.

9. the sieve powder host of high speed sieve powder equipment according to claim 6, it is characterised in that：Host housing（1）It further includes Sealing cover（14）；Sealing cover（14）It is arranged on sieving machine shell portion（12）Right-end openings at.