CN206184586U - A sieving mechanism and feed processing system for feed processing system - Google Patents

Abstract

A sieving mechanism and feed processing system for feed processing system, sieving mechanism include grinder and screening subassembly, the screening subassembly includes that screen plate and screening support, screening support include spout and first opening, the screen plate has the sieve mesh and runs through first opening and slide holding in spout, slide movement's driving piece is still followed to the screening subassembly including the drive screen plate, the driving piece includes crank connecting rod and motor, and the flywheel one end of keeping away from of the connecting rod of crank connecting rod articulates in the screen plate, screening leg joint in the discharge gate of grinder. Its particle size grain size and abundant smashing feed that can control the fodder can adjust the fodder that obtains required grain size to particle size, guarantee feed processing's sufficiency epigranular nature. Feed processing system includes above -mentioned sieving mechanism, and in vertical direction, the first opening of sieving mechanism is low than the second opening. The fodder grain size of its processing is even and crushing abundant, can adjust the fodder that obtains required grain size to particle size.

Description

For the screening plant and feed processing system of feed processing system

Technical field

The utility model is related to field of feed processing, in particular to a kind of screening dress for feed processing system Put and feed processing system.

Background technology

The feed processing system of current feed processing system, particularly crushing type, its screening plant is difficult to ensure that crushing The uniformity of the granularity of particle, and crushing effect is bad, the feed granules granularity that crushing is obtained differs, and feed product is of poor quality.

Also have at present using the feed processing system of knockdown screening plant, it passes through continuously to set some identical sieves Screening device, carries out repeating to crush to reach crushing purpose to feed, which results in the wasting of resources and increased tooling cost.

The size of the current uncontrollable grinding particle size of crushing type feed processing system, has varigrained feeding to production The applicability of material is not high, does not reach regulation and the requirement of Control granularity scope.

Utility model content

The purpose of this utility model is to provide a kind of screening plant for feed processing system, and it can effectively be controlled The granule size of the grinding particle size of feed simultaneously ensures that feed is sufficiently crushed, and the value range of grinding particle size can be adjusted To obtain the feed of required granule size；Ensure the adequacy of feed manufacturing and the uniformity of feed granularity, applicability is good, feed The processing rate of recovery it is high.

Another object of the present utility model is to provide a kind of feed processing system, and it includes above screening plant, feed The system of processing feed granules epigranular that obtains of processing and crush abundant, the value range of grinding particle size can be adjusted with To the feed of required granule size, production chains are high, and applicability is good, and the processing rate of recovery of feed is high.

What embodiment of the present utility model was realized in：

A kind of screening plant for feed processing system, it includes grinder and screening component；Screening component includes sieve Select plate and screening support, screening support for annular, screening support include relative the first side wall and second sidewall, the first side wall and Second sidewall is provided with chute, and screening support also includes relative the 3rd side wall and the 4th side wall, and the 3rd side wall offers first Opening；Screen plate has sieve aperture, and screen plate is through the first opening and is slidably received in chute；Screening component also includes being used for Drive screen plate along the reciprocating actuator of chute, actuator includes toggle and for driving crank connecting link machine The motor of the flywheel turns of structure, the connecting rod of toggle away from flywheel one end is articulated with screen plate；Screening support connection In the discharging opening of grinder.It can effectively control the granule size of the grinding particle size of feed and ensure that feed obtains sufficient powder It is broken, the value range of grinding particle size can be adjusted to obtain the feed of required granule size；Ensure the adequacy of feed manufacturing With the uniformity of feed granularity, applicability is good, and the processing rate of recovery of feed is high.

A kind of feed processing system, it includes above-mentioned screening plant；In vertical direction, the first opening of screening plant is compared with the Two openings are low.Its feed granules epigranular for obtaining of processing and crush abundant, the value range of grinding particle size can be adjusted To obtain the feed of required granule size, production chains are high, and applicability is good, and the processing rate of recovery of feed is high.

The beneficial effect of the utility model embodiment is：When screening plant works, when the size-reduced device of feed is crushed, feed Grain has fallen screen plate by discharging opening, and granularity passes through sieve aperture, hole of the granularity more than sieve aperture less than the feed granules in the aperture of sieve aperture The feed granules in footpath are collected by screen plate, for crushing again, and so on, untill feed granularity composite demand.Ensure The adequacy of feed manufacturing and the uniformity of feed granularity, the processing rate of recovery of feed are high.The feed processing system, it includes Above-mentioned screening plant, in vertical direction, the first opening of screening plant is low compared with the second opening, is easy to screen plate to collect and collects granularity More than the aperture of sieve aperture feed granules and for crushing again, it is ensured that the adequacy of feed manufacturing is uniform with feed granularity Property, the processing rate of recovery of feed is high.

Brief description of the drawings

In order to illustrate more clearly of the technical scheme of the utility model embodiment, below will be to be used needed for embodiment Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also Other related accompanying drawings are obtained with according to these accompanying drawings.

The schematic diagram of the screening plant that Fig. 1 is provided for first embodiment of the present utility model；

Fig. 2 is the stereogram of the screening support in the screening plant of Fig. 1；

Fig. 3 is the stereogram of the screen plate in the screening plant of Fig. 1；

Fig. 4 is the partial enlarged drawing in the B regions of the screening support of Fig. 2；

Fig. 5 is the partial enlarged drawing in the C regions of the screen plate of Fig. 3；

Fig. 6 is the partial enlarged drawing in the D regions of the screen plate of Fig. 3；

Fig. 7 is the partial enlarged drawing of the a-quadrant of the screening plant of Fig. 1.

In figure：

Screening plant 100, grinder 110, charging aperture 111, discharging opening 112, screening component 120, screen plate 121, sieve aperture 121a, first end 121b, the second end 121c, screening stage 121d, convex edge 121e, connecting portion 121f, screening support 122, the Side wall 122a, second sidewall 122b, chute 122c, the 3rd side wall 122d, the 4th side wall 122e, the first opening 122f, second Opening 122g, collection conduit 130, collecting tank 140, feedback pipeline 150, blower fan 160, output channel 170, actuator 180, flywheel 181st, connecting rod 182, motor 190.

Specific embodiment

It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer Accompanying drawing in type embodiment, is clearly and completely described, it is clear that retouched to the technical scheme in the utility model embodiment The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Generally described in accompanying drawing herein and The component of the utility model embodiment for showing can be arranged and designed with a variety of configurations.

Therefore, the detailed description of embodiment of the present utility model below to providing in the accompanying drawings is not intended to limit requirement The scope of the present utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in the utility model Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all Belong to the scope of the utility model protection.

It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi It is defined in individual accompanying drawing, then it need not be further defined and explained in subsequent accompanying drawing.

, it is necessary to explanation in description of the present utility model, term " in ", " on ", D score, " vertical ", " level ", The orientation or position relationship of the instructions such as " interior ", " outward " are that, based on orientation shown in the drawings or position relationship, or the practicality is new Orientation or position relationship that type product is usually put when using, are for only for ease of description the utility model and simplify description, and Be not indicate or imply meaning device or element must have specific orientation, with specific azimuth configuration and operation, therefore It is not intended that to limitation of the present utility model.Additionally, term " first ", " second ", " the 3rd ", " the 4th " etc. are only used for distinguishing Description, and it is not intended that indicating or implying relative importance.

Additionally, the term such as term " level ", " vertical ", " vertical " is not offered as requiring part abswolute level or pendency, and Can be to be slightly tilted.It is not the expression structure if " level " refers to only its direction with respect to more level for " vertical " Must be fully horizontal, and can be to be slightly tilted.

In description of the present utility model, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " sets Put ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integratedly Connection；Can mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Can be two connections of element internal.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Concrete meaning of the language in the utility model.

First embodiment

Fig. 1 is refer to, the present embodiment provides a kind of screening plant 100 for feed processing system, works as in the present embodiment In, screening plant 100 includes grinder 110 and screening component 120；Grinder 110 has charging aperture 111 and discharging opening 112, sieve Component 120 is selected to be located on discharging opening 112.

Screening plant 100 also includes collection conduit 130, collecting tank 140, feedback pipeline 150 and blower fan 160.

Screening component 120 is used to be sieved the feed crushed by grinder 110 by granularity, the feed of release mesh Particle can pass through screening component 120 and enter output channel 170, and granularity, will be by sieving more than the feed granules for limiting granularity Component 120 is selected to enter collecting tank 140 by collection conduit 130, the feed granules in collecting tank 140 are by blower fan 160 by feeding back Pipeline 150 is recycled to charging aperture 111, is easy to grinder 110 further to crush the underproof feed granules of granularity, with To the qualified feed granules of granularity.So repeat, untill all of feed granules meet granularity requirements.

Crush by screening and again, it is ensured that the granularity of all of feed granules reaches production requirement, and then ensure that feeding Expect the epigranular degree of particle, improve feeding quality.

Fig. 1, Fig. 2 and Fig. 3 are referred to, in the middle of the present embodiment, screening component 120 includes screen plate 121 and for supporting The screening support 122 of screen plate 121, screening support 122 is annular, and in the middle of the present embodiment, screening support 122 is in square substantially Shape ring-type.In other embodiment of the present utility model, screening support 122 can also be other ring-shaped, such as to substantially square Cyclic structure of fillet treatment etc. has been made at the right angle of shape ring, but is not limited only to this.

Screening support 122 includes relative the first side wall 122a and second sidewall 122b, the first side wall 122a and the second side Wall 122b is arranged with chute 122c, as shown in Figure 2 and Figure 4.Screening support 122 also include the 3rd relative side wall 122d and 4th side wall 122e, the 3rd side wall 122d offer the first opening 122f, and the 4th side wall 122e offers the second opening 122g.It is sliding Groove 122c is simultaneously through the first opening 122f and the second opening 122g.

Screen plate 121 has the sieve aperture 121a for screening the granularity of feed granules, according to different granularity needs, can be with In different screen plates 121, the sieve aperture 121a of different pore size is set, in actual production process, according to actual needs, Ke Yigeng Screen plate 121 is changed, the purpose of varigrained feed granules is screened to reach.

Screen plate 121 is through the first opening 122f and the second opening 122g and is slidably received in chute 122c.Screening Support 122 is located on the discharging opening 112 of grinder 110, and in the middle of this implementation, and in vertical direction, the first opening 122f is compared with the Two opening 122g are low, because screen plate 121 is with respect to the horizontal plane more inclined, beneficial to the undesirable feed granules edge of granularity The inclined plane of screen plate 121 slides, and be easy to the undesirable feed granules of granularity collects collection.

Because screen plate 121 is slidably received in chute 122c, screen plate 121 can be reciprocating along chute 122c, When feed granules fall screen plate 121 by the discharging opening 112 of grinder 110, meet the feed granules of granularity requirements from sieve aperture 121a is exported by and from output channel 170, and the feed granules in aperture of the granularity more than sieve aperture 121a cannot be logical from sieve aperture 121a Cross, then stayed on screen plate 121.Because screen plate 121 is reciprocating along chute 122c, granularity is accelerated more than sieve aperture The feed granules in the aperture of 121a slide from the inclined plane of screen plate 121, prevent the feed in aperture of the granularity more than sieve aperture 121a Particle blocks sieve aperture 121a or stops that the feed granules for meeting granularity requirements pass through from sieve aperture 121a, and can prevent from meeting granularity It is required that feed granules blocked in sieve aperture 121a, improve screen plate 121 screening efficiency and granularity more than sieve aperture 121a hole The collection of the feed granules in footpath collects efficiency.

It should be noted that in the middle of the present embodiment, chute 122c is recessed in the first side wall 122a and second sidewall 122b, And in the bearing of trend of chute 122c, the length of the length, the length of the first side wall 122a and second sidewall 122b of chute 122c It is equal.In other embodiment of the present utility model, chute 122c can also be convexly equipped in the first side wall 122a and second sidewall 122b, in the bearing of trend of chute 122c, the length of chute 122c is also less than length or second side of the first side wall 122a The length of wall 122b.Chute 122c can also be without through the first opening 122f and/or the second opening 122g.It is not limited to this.

In the middle of the present embodiment, sieve aperture 121a rectangular arrays are distributed in screen plate 121, and sieve aperture 121a perforate direction Plate face with screen plate 121 is vertical.In other embodiment of the present utility model, the distribution mode of sieve aperture 121a can with difference, Such as distribution, random distribution etc. in a ring, perforate direction and the plate face of screen plate 121 of sieve aperture 121a may not be vertical closing System.But it is not limited only to this.

In the middle of the present embodiment, screen plate 121 has first end 121b, the second end 121c and the connection being oppositely arranged Screening stage 121d between first end 121b and the second end 121c.As shown in Figure 3.First end 121b is opened through first Mouth 122f, the second end 121c are located at screening stage 121d through the second opening 122g, sieve aperture 121a.

The second end 121c is not provided with sieve aperture 121a, is in order to avoid when the second end 121c makees through the second opening 122g The satisfactory feed granules of granularity are taken out of screening support 122 during reciprocating motion and lose.The processing that improve feed is reclaimed Rate.

It should be noted that in other embodiment of the present utility model, first end 121b and the second end 121c bis- At least one of person can also set sieve aperture 121a.

In the middle of the present embodiment, perpendicular to the plate face direction of screen plate 121, the external diameter of first end 121b is less than screening The external diameter of section 121d, the external diameter of first end 121b and the external diameter of screening stage 121d are respectively less than the external diameter of the second end 121c. Parallel to the 3rd side wall 122d and the 4th side wall 122e directions, the external diameter of first end 121b, the external diameter of screening stage 121d and The external diameter of two end 121c is equal.In other embodiment of the present utility model, perpendicular to the plate face side of screen plate 121 To the external diameter of screening stage 121d is also less than or equal to the external diameter of the second end 121c, and the external diameter of first end 121b also may be used With the external diameter less than or equal to screening stage 121d.But it is not limited only to this.

In the middle of the present embodiment, the relative edge of screen plate 121 is also convexly equipped with convex edge 121e, such as Fig. 3 and Fig. 6 institutes Show, the bearing of trend of 121e in convex edge, the length of convex edge 121e and the equal length of screen plate 121.It is of the present utility model its In the middle of his embodiment, the bearing of trend of 121e in convex edge, the length of convex edge 121e is also less than the length of screen plate 121, but It is not limited only to this.

In the middle of the present embodiment, convex edge 121e is slidably received in chute 122c.The external diameter of the second end 121c is smaller In the aperture of the second opening 122g, opened less than first in the external diameter perpendicular to the direction of the plate face of screen plate 121, first end 121b The aperture of mouth 122f, further, the external diameter of first end 121b is the half in the aperture of the first opening 122f.Parallel to The direction of three side wall 122d or the 4th side wall 122e, the external diameter of first end 121b is equal to the aperture of the first opening 122f.

When screen plate 121 is reciprocating along chute 122c, the second end 121c makees reciprocal through the second opening 122g Motion, the aperture of the second opening 122g, the openings of the second end 121c and second are slightly less than due to the external diameter of the second end 121c Gap between 122g is negligible, and feed granules cannot dissipate from the gap between the 122g of the openings of the second end 121c and second Drop out and, it is ensured that the processing rate of recovery of feed.Further, since chute 122c is filled by convex edge 121e, chute 122c and convex edge Also gapless between 121e, further ensures the processing rate of recovery of feed.

When screen plate 121 is reciprocating along chute 122c, first end 121b also extends through the first opening 122f and makees past Multiple motion, due in the aperture that the external diameter of the direction first end 121b perpendicular to the plate face of screen plate 121 is the first opening 122f Half, there is gap between the 122f of the openings of first end 121b and first, and due in vertical direction, the first opening 122f compared with Second opening 122g is low, and feed granules of the granularity more than sieve aperture 121a converge at first due to the reciprocating motion of screen plate 121 End 121b, and discharged by the gap between the 122f of the openings of first end 121b and first so that granularity is more than sieve aperture 121a's Feed granules can be processed by following process.

Because perpendicular to the plate face direction of screen plate 121, the external diameter of first end 121b is outer less than screening stage 121d Footpath so that feed granules of the granularity more than sieve aperture 121a are more easy to converge to first end 121b from screening stage 121d, beneficial to granularity The convergence of the feed granules more than sieve aperture 121a is collected.

Feed granules due to granularity more than sieve aperture 121a are collected and excluded in time, it is ensured that screen plate 121 can continue Normally and efficiently sieve feed granules, prevent due to granularity more than sieve aperture 121a feed granules hoarded on screen plate 121 and So that screen plate 121 cannot carry out screening work.

Fig. 1, Fig. 3, Fig. 6 and Fig. 7 are referred to, screening plant 100 also includes driving screen plate 121 to make reciprocal along chute 122c The actuator 180 of motion, actuator 180 can be toggle, reciprocable machine etc., in the middle of the present embodiment, drive Part 180 is toggle.

Actuator 180 has flywheel 181 and connecting rod 182.The first end 121b of screen plate 121 also has to be used for and connecting rod The connecting portion 121f that 182 free end is hinged.Flywheel 181 is driven by the motor 190 shared with blower fan 160, such as Fig. 1 and Fig. 7 institutes Show.

In the middle of the present embodiment, flywheel 181 in collection conduit 130, pass through by the rotating shaft at the rotational axis line of flywheel 181 Wear the side wall of collection conduit 130 and extend collection conduit 130, chain drive is passed through between blower fan 160 and the rotating shaft of flywheel 181.

Because flywheel 181 drives with blower fan 160 by motor 190, therefore flywheel 181 is synchronous start-up operation with blower fan 160 , can both ensure that blower fan was to start working, with ensureing collecting tank 140 when screen plate 121 starts screening feed granules Overstock without feed granules, it is ensured that the feed granules in collecting tank 140 can be reprocessed timely.

When flywheel 181 is driven by motor 190, connecting rod 182 drives screen plate 121 reciprocating along chute 122c.Grain The feed granules in aperture of the degree more than sieve aperture 121a are by the gap between the 122f of the openings of first end 121b and first through collecting pipe Road 130 enters collecting tank 140, and blower fan 160 is driven by motor 190 simultaneously, the feed in the aperture by granularity more than sieve aperture 121a Grain is recycled at the charging aperture 111 of grinder 110 through feedback pipeline 150, then is crushed.And so on, until feed granularity Untill composite demand.

In the middle of the present embodiment, blower fan 160 is additionally provided with nozzle 161 with the junction of collecting tank 140, and nozzle 161 is by collecting The bottom of groove 140 extends towards the discharging opening of collecting tank 140, i.e., extend towards feedback pipeline 150.

Due to being provided with nozzle 161, the air-flow for blowing out blower fan 160 is converged, and enhances the gas of the blowout of blower fan 160 The directionality of stream.Prevent air-flow from bleeding around, enhance the feed granules in aperture of the air-flow feedback granularity more than sieve aperture 121a Ability, improves the processing rate of recovery and processing effect of feed.

It should be noted that in other embodiment of the present utility model, feedback pipeline 150 can also be not attached to crushing At the charging aperture 111 of device 110, feedback pipeline 150 can also be connected directly in the crushing chamber of grinder 110, but not limited to this.

Fig. 1 is referred to, in the middle of the present embodiment, the air outlet of blower fan 160 is connected with the bottom of collecting tank 140, it is ensured that Feed granules in collecting tank 140 can be recycled at the charging aperture 111 of grinder 110 by air-flow, can effectively prevent collecting tank Feed granules in 140 are deposited, and improve the processing rate of recovery of feed, and ensure that feed granules as much as possible are filled Divide and crush.

The operation principle of screening plant 100 is：When feed is after the input grinder 110 of charging aperture 111, size-reduced device 110 Crush, feed granules have fallen screen plate 121 by discharging opening 112, the feed granules in aperture of the granularity less than sieve aperture 121a pass through Sieve aperture 121a enters subsequent process flow through output channel 170, and the feed granules in aperture of the granularity more than sieve aperture 121a are due to sieve Select the reciprocating motion of plate 121 to act on and be collected to first end 121b, and by between the 122f of the openings of first end 121b and first Gap enters collecting tank 140, the feed granules in the same aperture then by granularity more than sieve aperture 121a of blower fan 160 through collection conduit 130 It is recycled at the charging aperture 111 of grinder 110 through feedback pipeline 150, then is crushed.And so on, until feed granularity is multiple Close untill requiring.The feed granules for obtaining are processed through screening plant 100 and crushes abundant, and the value range of grinding particle size can carried out Adjust to obtain the feed of required granule size；Ensure that the adequacy of feed manufacturing and the uniformity of feed granularity, applicability Good, the processing rate of recovery of feed is high.

Second embodiment

The present embodiment provides a kind of feed processing system, and the feed processing system includes screening plant 100, in side vertically The first opening 122f to, screening plant 100 is low compared with the second opening 122g, due to the now relative level of screen plate 121 more Incline, be easy to the collection of the feed granules in aperture of the granularity more than sieve aperture 121a, improve screening efficiency and reprocessing efficiency.

The operation principle of the feed processing system is：Due to being provided with screening plant 100, the feed processing system is processed The feed granules for arriving crush abundant, and the value range of grinding particle size can be adjusted to obtain the feed of required granule size； The adequacy of feed manufacturing and the uniformity of feed granularity are ensure that, applicability is good, and the processing rate of recovery of feed is high.

In sum, the screening plant 100 for feed processing system that the utility model is provided, it can effectively be controlled The granule size of the grinding particle size of feed simultaneously ensures that feed is sufficiently crushed, and the value range of grinding particle size can be adjusted To obtain the feed of required granule size；Ensure the adequacy of feed manufacturing and the uniformity of feed granularity, applicability is good, feed The processing rate of recovery it is high.The feed processing system that the utility model is provided, it includes screening plant 100, the feed that processing is obtained Grain graininess is uniform and crushes abundant, the value range of grinding particle size can be adjusted to obtain the feed of required granule size, Production chains are high, and applicability is good, and the processing rate of recovery of feed is high.

Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.

Claims (10)

1. a kind of screening plant for feed processing system, it is characterised in that the screening plant includes grinder and screening Component；The screening component includes screen plate and screening support, and the screening support is annular, and the screening support includes relative The first side wall and second sidewall, the first side wall and the second sidewall be provided with chute, and the screening support also includes phase To the 3rd side wall and the 4th side wall, the 3rd side wall offers the first opening；The screen plate has sieve aperture, the sieve Plate is selected through the described first opening and the chute is slidably received in；The screening component is also included for driving the sieve Select plate along the reciprocating actuator of the chute, the actuator includes toggle and for driving the crank The motor of the flywheel turns of linkage, the connecting rod of the toggle away from described flywheel one end is articulated with the sieve Select plate；The screening support is connected to the discharging opening of the grinder.

2. screening plant according to claim 1, it is characterised in that the 4th side wall is further opened with the second opening, institute Screen plate is stated through the described second opening.

3. screening plant according to claim 2, it is characterised in that the screen plate has the first end being oppositely arranged With the second end, through the described first opening, the second end is through the described second opening for the first end；Described second The external diameter of end is slightly less than the bore of second opening, the bore of the external diameter less than the described first opening of the first end.

4. screening plant according to claim 3, it is characterised in that the screen plate also has and is connected to described first Screening stage between end and the second end, the screening stage has the sieve aperture through the screening stage；Perpendicular to institute State screen plate direction, the external diameter of the external diameter more than or equal to the screening stage of the second end, the external diameter of the first end Less than or equal to the external diameter of the screening stage.

5. screening plant according to claim 4, it is characterised in that the connecting rod is articulated with away from described flywheel one end The first end.

6. screening plant according to claim 5, it is characterised in that the screening component also includes collection conduit, described Collection conduit is located on first opening, and one end away from the described first opening of the collection conduit also has collecting tank, The charging aperture of the collecting tank is connected with the collection conduit.

7. screening plant according to claim 6, it is characterised in that the screening component also includes feedback pipeline, described One end of feedback pipeline is located on the discharging opening of the collecting tank, and the feedback pipeline is connected to away from described collecting tank one end The charging aperture of the grinder；The bottom of the collecting tank is connected with for the feed in the collecting tank to be passed through into the feedback Pipeline is recycled to the blower fan of the charging aperture of the grinder.

8. screening plant according to claim 7, it is characterised in that the blower fan also sets with the junction of the collecting tank There is nozzle, the nozzle is extended by the bottom of the collecting tank towards the discharging opening of the collecting tank.

9. screening plant according to claim 8, it is characterised in that the blower fan is driven by the motor.

10. a kind of feed processing system, it is characterised in that the feed processing system includes claim 2-9 any one institute The screening plant stated；In vertical direction, first opening, second opening of the screening plant is low.