CN209331074U - Fruit screening and fresh-keeping film-coating machine - Google Patents

Abstract

The utility model discloses a kind of screening of fruit and fresh-keeping film-coating machines, which includes screening plant and coating device, and screening plant includes at least two feed openings for exporting film water fruits to be coated at different levels, and coating device includes: the dip tank for being loaded with coating liquid；It is placed in the fruit conveyance conduit being correspondingly arranged in dip tank and with feed opening, inlet is offered on tube wall, bottom side is equipped with the first fruit conveyor structure；It is connected and tilts upward relative to fruit conveyance conduit the fruit output channel of setting with fruit conveyance conduit, tube wall is equipped with the second fruit conveyor structure；Air dried cell, the air dried cell include the air-dried pipeline being connected with fruit output channel；Fruit of the same size is placed in same fruit conveyance conduit by the application after sieving fruit, the internal diameter of air-dried pipeline, fruit output channel and fruit conveyance conduit is set as being adapted with the outer diameter of film water fruit to be coated, fruit along pipeline rout one by one film, one by one air-dry, film is high-efficient, it is high-efficient to air-dry.

Description

Fruit screening and fresh-keeping film-coating machine

Technical field

The utility model belongs to fruit freshness preserving technical field, and in particular to a kind of screening of fruit and fresh-keeping film-coating machine.

Background technique

Fruit is capable of providing vitamin, minerals and the organic acid that human body easily lacks, and ensures the health of people, therefore As the favorite important foodstuffs of people institute.But still carried out after fresh fruit harvesting complicated physiological change, biology variation and Physical change, cell and tissue, which still proceed with, carries out breathing and transpiration so that fruit be easy to generate shrinkage, weightlessness, Phenomena such as wilting, is rotten, influences the quality and sale of fruits and vegetables.

In the transport and storage process of fruit, in order to achieve the effect that anti-corrosive fresh-keeping, it is mostly used physics preserving process, such as controlled atmosphere Refrigeration etc..Since storage and refrigerating machine equipment need more capital investment, operating cost is higher, and stores storehouse operation It is required that there is good administrative skill.

Therefore anti-corrosive fresh-keeping is carried out to fruit using food additives not only to facilitate, but also can also greatly save cost.Fruit Vegetable coating antistaling agent can form one layer of envelope in fruit surface, this layer of envelope can block the gas of fruit to a certain extent Hole inhibits respiration, reduces nutrient consumption, and moisture is inhibited to distribute, and inhibits microorganism invasion, prevents putrid and deteriorated.

It generallys use film applicator in the prior art fruit and vegetable coating antistaling agent is coated on fruits and vegetables.Such as application No. is The Chinese utility model patent application of CN201620437422.X discloses a kind of fruits and vegetables vacuum evaporation machine, the fruits and vegetables vacuum evaporation Machine includes the interior film case for being equipped with vacuum sealing cavity, and the opposite sides of film case is respectively provided with film entrance and film outlet, applies It is respectively provided with a support frame outside film entrance and film outlet, the carrier chain across film case, the carrier chain are equipped between two support frames It is equipped with the dip-coating frame for loading fruits and vegetables；The immersion trough for being loaded with coating liquid is equipped in the film case, above immersion trough Conveying chain part be in recessed arc-shaped, immersion trough can be immersed when the dip-coating frame on carrier chain is moved to the lower recess.

The fruits and vegetables vacuum evaporation machine uses the rack-mounted load fruits and vegetables of dip-coating of box-like, due to being to carry out film as unit of dip-coating frame , in order to improve painting membrane efficiency, more fruits and vegetables would generally be loaded in dip-coating frame, fruits and vegetables are stacked on top of each other to be unfavorable for subsequent carry out quilt Film air-dries, and leads to air-dry time length, air-dries low efficiency；And staff needs that continuously fruits and vegetables are loaded into dip-coating frame, Working strength is larger, and the degree of automation is lower.

Utility model content

Present invention purpose, which is to provide one kind, can sieve fruit and continuously carry out film and wind one by one Dry fruit screening and fresh-keeping film-coating machine, apply membrane efficiency and air-dried efficiency is greatly improved.

For achieving the above object, the technical solution of the application is as follows:

A kind of screening of fruit and fresh-keeping film-coating machine, including carrying out gradation sizing by outer diameter size for treating film fruit Screening plant, and the coating device for carrying out film to the film water fruit to be coated after screening, the screening plant include using In at least two feed openings for exporting film water fruits to be coated at different levels, the coating device includes:

It is loaded with the dip tank of coating liquid；

The fruit conveyance conduit being placed in dip tank, fruit conveyance conduit are connected and are arranged in a one-to-one correspondence with feed opening, At least one inlet is offered on the tube wall of the fruit conveyance conduit, the bottom of the fruit conveyance conduit is equipped with the first water Fruit conveying mechanism；

The fruit output channel being connected with the discharge end of fruit conveyance conduit, the fruit output channel are conveyed relative to fruit Pipeline tilts upward setting, and the tube wall of fruit output channel is equipped with the second fruit conveyor structure；

For carrying out air-dried air dried cell to the fruit after film, which includes being connected with fruit output channel Air-dried pipeline；

Outer diameter phase of the internal diameter of the air-dried pipeline, fruit output channel and fruit conveyance conduit with film water fruit to be coated It adapts to.

The application first uses screening plant that will sort by size to the fruit of film, is divided into different grades, often The fruit of a grade is placed in same fruit conveyance conduit.

The application sets the internal diameter of air-dried pipeline, fruit output channel and fruit conveyance conduit to and film water fruit to be coated Outer diameter be adapted, film and it is air-dried when, fruit is arranged one by one along pipeline rout, one by one film, air-dry one by one, fruit Between phenomenon stacked on top of each other is not present, can not only be air cured rapidly, air-dry high-efficient, and the fruit in feed hopper continuously enters Fruit transfer passage, staff only need separated in time to fill up feed hopper, greatly reduce working strength, improve Painting membrane efficiency.

In above-mentioned fruit screening and fresh-keeping film-coating machine, the first fruit conveyor structure includes:

The active runner of the discharge end of fruit conveyance conduit is set；

The driven runner of the feed end of fruit conveyance conduit is set；

The first conveyer belt being set between driven runner and active runner；

Active roller centre axis and driven roller centre axis are rotatably assorted with the sealing of the side wall of dip tank, in active runner The output shaft fixed connection of mandrel and first motor；The bottom side of the fruit conveyance conduit is offered mutually fits with the width of the conveyer belt The first socket answered.

Conveyer belt rotates under the drive of active runner around driven runner and active runner, enters fruit delivery pipe in fruit Behind road, fruit is transported to discharge end from the feed end of fruit conveyance conduit by transmission belt, completes film.

In order to bring coating liquid into as little as possible when air-dried, the fruit output air-dried between channel and fruit conveyance conduit is logical Road tilts upward setting, and the feed end of fruit conveyance conduit infiltrates in coating liquid, and discharge end then extends to coating liquid liquid More than face, outside dip tank.

In order to move fruit along the fruit output channel tilted upward, in above-mentioned fruit screening and fresh-keeping film-coating machine In, the fruit output channel is in dip tank, be oppositely disposed on the tube wall of fruit output channel there are two second hold Mouth is set, a draining fruit is equipped at each second socket and promotes wheel, all fruit promote the rotation direction phase of wheel in same row Together, two rows of fruit promote the rotation direction of wheel opposite；

Fruit promotes wherein one end of wheel central axis to be rotatably assorted with fruit output channel, the side wall of the other end and dip tank Sealing is rotatably assorted；Dip tank is externally provided with the driving mechanism for driving fruit to promote wheel central axis rotation.

The opposite fruit of two rows of rotation directions promotes and forms fruit output channel between wheel, promotes in this two rows of fruit Under the action of wheel, fruit can be transported in air-dried pipeline along fruit output channel.

Two rows of fruit promote wheel that can be oppositely disposed in any radial line of fruit output channel, but in order to make this Shen Please fruit preserving coating machine compact overall structure, in above-mentioned fruit screening and fresh-keeping film-coating machine, two rows of fruit promote wheel point Other places promote the axially extending direction of wheel and the axially extending side of active runner in the top side and bottom side of fruit output channel, fruit To parallel；

Wheel is promoted for the fruit in fruit output channel bottom side, the driving mechanism includes:

The first driving gear being fixed on active roller centre axis；

It is fixed on fruit and promotes the first driven gear taken turns on central axis；

The first transmission gear being meshed with the first driven gear and the first driving gear, the first transmission gear central axis with The side wall sealing of dip tank is rotatably assorted；

The second transmission gear being meshed with two adjacent the first driven gears, the second transmission gear central axis and dip-coating The side wall sealing of slot is rotatably assorted；

Wheel is promoted for the fruit in fruit output channel top side, the driving mechanism includes:

It is fixed therein fruit and promotes the second driving gear on wheel central axis, which promotes wheel central axis and the The output shaft fixed connection of two motors；

It is fixed on other fruit and promotes the second driven gear taken turns on central axis；

The third for being meshed with the second driving gear and the second driven gear, being meshed with two neighboring second driven gear The side wall sealing of transmission gear, third transmission gear central axis and dip tank is rotatably assorted.

When promoting wheel to be separately positioned on the top side and bottom side of fruit output channel two rows of fruit, this draining in bottom side Fruit promotes wheel to be closer with active runner, can realize and link with active runner, so as to not have to promote for this draining fruit Independent driving mechanism is arranged in wheel, only need to promote wheel that independent drive is arranged for this draining fruit of the top side in fruit output channel Motivation structure.Simultaneously as each fruit promotes the distance between wheel relatively closely in same row, therefore it can be directly used second Transmission gear or third transmission gear realize that adjacent fruit promotes the linkage of wheel, and each fruit in same row is kept to promote turning for wheel Dynamic direction is identical.

In above-mentioned fruit screening and fresh-keeping film-coating machine, the air dried cell includes bellows, is set at the top of the bellows There is air inlet, the bottom of the bellows is equipped with air outlet, is equipped in fan and is between air inlet and air outlet, for driving sky The fan that gas flows inside and outside bellows；

The air-dried pipeline is inclined in bellows, feed end and the fruit output channel phase of the air-dried pipeline Even, the discharge end of the air-dried pipeline extends to outside bellows；It air-dries and offers several ventilation openings on the tube wall of pipeline.

The air-dried channel being obliquely installed facilitates access for the fruit in air-dried channel and can roll along air-dried channel roll on themselves It realizes in dynamic process and quickly and evenly air-dries, finally voluntarily rolled out from the discharge end for air-drying channel.In addition to this, pipeline is air-dried Also it is referred to fruit conveyance conduit and the first fruit conveyor structure is set in bottom side.

In above-mentioned fruit screening and fresh-keeping film-coating machine, the bottom of the bellows offers coating liquid recovery port, applies Coating liquid recovery channel is connected between film liquid recovery port and dip tank；

The extending sleeve for preventing coating liquid from flowing out from air outlet is equipped at the air outlet, which is in wind In case.So after coating liquid is accumulated in bellows bottom, coating liquid can only be flowed out from coating liquid recovery port, without overflowing to extending sleeve It is interior to be flowed out from air outlet, avoid coating liquid from wasting.

In above-mentioned fruit screening and fresh-keeping film-coating machine, the screening plant includes rack, and rack is equipped with along vertical To multiple sieve units of arrangement, each sieve unit includes: histogram

The active roller bearing and supplementary rder cooperated respectively with the gantry rotation；

It is set in several second conveyer belts between active roller bearing and supplementary rder and evenly distributed by default spacing；

Third motor for driving the active roller bearing to rotate；

The pipeline that gathers materials of the discharge end of second conveyer belt is set, and the feed end of the pipeline that gathers materials offers and the The collection material mouth that the discharge end of two conveyer belts is oppositely arranged, the feed opening are in the discharge end in the channel that gathers materials；

With highly gradually decreasing locating for sieve unit, the spacing of two second conveyer belts is successively successively decreased in corresponding sieve unit.

When treating film fruit again and being sieved, film water fruit to be coated is poured in top layer's sieve unit, and partial size is greater than the The film water fruit to be coated of two conveyer belts is trapped on the second conveyer belt, and is sent by the second conveyer belt into the pipeline that gathers materials, through blanking Mouth enters fruit conveyance conduit；And partial size then falls to next layer of sieve unit less than the film water fruit to be coated of the second conveyer belt spacing The second conveyer belt on, thus realize mechanical automation screening and charging film.

In above-mentioned fruit screening and fresh-keeping film-coating machine, set on the top of top layer's sieve unit, the rack There is the feed hopper of the feed end in the second conveyer belt.

In above-mentioned fruit screening and fresh-keeping film-coating machine, the width of the tapping channel of the feed hopper be respectively at The distances of two second conveyer belts at top layer's sieve unit both ends is adapted, and the discharge outlet of tapping channel be additionally provided with it is close The baffle of second conveyer belt feed end side.The width of tapping channel and two second conveyer belts at top layer's sieve unit both ends Distance be adapted, enable the film water fruit to be coated in feed hopper to be equably sent to two conveyer belt feed ends, avoid concentrate heap Product causes to sieve bad；And baffle is then conducive to that film water fruit to be coated is avoided to fall to shell outside from the second conveyer belt feed end.

In above-mentioned fruit screening and fresh-keeping film-coating machine, the rack is equipped with anti-in the second transmission belt two sides Protective net.Protective net helps avoid the film water fruit to be coated on the second transmission belt and drops down onto shell outside from the second transmission belt two sides.

Compared with prior art, the utility model has the following beneficial effects:

The application first uses screening plant that will sort by size to the fruit of film, is divided into different grades, often The fruit of a grade is placed in same fruit conveyance conduit；The application is by air-dried pipeline, fruit output channel and fruit delivery pipe The internal diameter in road be set as with the outer diameter of film water fruit to be coated be adapted, film and it is air-dried when, fruit be along pipeline rout one by one Arrangement, one by one film, air-dry one by one, between fruit be not present phenomenon stacked on top of each other, can not only be air cured rapidly, air-dry efficiency Height, and the fruit in feed hopper continuously enters fruit transfer passage, and staff only needs separated in time to fill out feed hopper It is full, working strength is greatly reduced, painting membrane efficiency is improved.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of fruit screening and fresh-keeping film-coating machine of the utility model；

Fig. 2 is structural schematic diagram of the screening plant under another visual angle in Fig. 1；

Fig. 3 is fruit output channel in Fig. 1 and the enlarged drawing at air dried cell；

Fig. 4 is structural schematic diagram of the Fig. 3 under another visual angle；

Fig. 5 is the enlarged drawing of part B in Fig. 3；

Fig. 6 is the enlarged drawing of C portion in Fig. 4；

Fig. 7 is A-A section view schematic partial plan in Fig. 1.

Specific embodiment

The technical solution of the utility model is described in further details with reference to the accompanying drawings and detailed description.

Embodiment 1

As shown in Figure 1, a kind of fruit screening of the present embodiment and fresh-keeping film-coating machine, including for treating film fruit by outer diameter Size carries out the screening plant 1 of gradation sizing, and the coating device 2 for carrying out film to the film water fruit to be coated after screening.

Wherein, screening plant 1 includes rack 11, and rack 11 is equipped with vertically disposed multiple sieve units, sieve The quantity of sub-unit can be specifically arranged according to specific needs, and the quantity the more, can be realized more careful screening, this implementation Example is provided with three sieve units, can treat film fruit and carry out four screenings, the film water fruit to be coated for obtaining three kinds of specifications carries out Subsequent film.

As depicted in figs. 1 and 2, in the present embodiment, each sieve unit includes the master being rotatably assorted respectively with rack 11 Dynamic roller bearing 12 and supplementary rder 13 are arranged with by evenly distributed several of default spacing between active roller bearing 12 and supplementary rder 13 Second conveyer belt 14, with highly being gradually decreased locating for sieve unit, in corresponding sieve unit the spacing of two second conveyer belts 14 according to It is secondary to successively decrease；Third motor (not shown) for driving active roller bearing 12 to rotate, the second conveyer belt are installed in rack 11 14 discharge end is tiltedly installed with the pipeline 16 that gathers materials, which offers the discharging with the second conveyer belt 14 The collection material mouth 17 being oppositely arranged is held, the discharge end for the pipeline 16 that gathers materials then is equipped with feed opening.

As shown in Figure 1, rack 11 is equipped with the protective net 18 in 14 two sides of the second conveyer belt, in order to avoid the second conveyer belt 14 On film water fruit to be coated fall to the outside of rack 11 from 14 two sides of the second conveyer belt.

As depicted in figs. 1 and 2, in the top of top layer's sieve unit, rack 11 is equipped in the second conveyer belt 14 The feed hopper 15 of feed end；The width of the tapping channel 151 of feed hopper 15 and it is respectively at the two of top layer's sieve unit both ends The distance of the second conveyer belt of root 14 is adapted, avoid concentrating accumulation cause to sieve it is bad；The discharge outlet of tapping channel 151 is equipped with Baffle 152 close to 14 feed end side of the second conveyer belt, avoids film water fruit to be coated from falling to from 14 feed end of the second conveyer belt 11 outside of rack.

After the completion of screening, film fruit can be treated and carry out film and air-dry.As shown in Figure 1 and Figure 7, coating device 2 wraps The dip tank 3 for being loaded with coating liquid is included, horizontal setting there are three fruit conveyance conduits 4 in dip tank 3, and gather materials pipeline 16 and fruit Conveyance conduit 4 connects one by one, so that the film water fruit to be coated to different size carries out film simultaneously.

As shown in Fig. 1, Fig. 3 and Fig. 5, it is circumferentially equably offered on the tube wall of fruit conveyance conduit 4 several in long strip Inlet 41, the coating liquid in dip tank 3 pours in fruit conveyance conduit 4 from inlet 41, realizes the film to fruit.For The fruit into fruit conveyance conduit 4 is set to be moved to the discharge end of fruit conveyance conduit 4, the present embodiment is in fruit conveyance conduit 4 Bottom side be provided with the first fruit conveyor structure 5.The first fruit conveyor structure 5 includes: that going out for fruit conveyance conduit 4 is arranged in The active runner 51 for expecting end, is arranged in the driven runner 52 of the feed end of fruit conveyance conduit 4, is set in driven runner 52 and master The first conveyer belt 53 between turn wheel 51, the bottom side of fruit conveyance conduit 4 then offers the width with first conveyer belt 53 The first adaptable socket 42.

Driven roller centre axis 54 and active roller centre axis 55 are rotatably assorted with the sealing of the side wall of dip tank 3, also, Output shaft fixed connection of the active roller centre axis 55 also with first motor (not shown), to realize the drive to active runner 51 It is dynamic.

The discharge end of fruit conveyance conduit 4 is connected with fruit output channel 6, and fruit output channel 6 is for conveying fruit To outside dip tank 3, it is convenient for subsequent air dry operation.In order to take coating liquid out of dip tank 3, fruit output channel as little as possible 6 be that setting is tilted upward relative to fruit conveyance conduit 4, and the feed end of fruit conveyance conduit 4 infiltrates in coating liquid, and goes out Material end then extends to outside coating liquid liquid level or more and dip tank 3.

As shown in Figure 3 and Figure 5, the present embodiment is provided with the second fruit conveyor structure 7 on fruit output channel 6, so as to Fruit is delivered to outside dip tank 3.Second fruit conveyor structure 7 includes the bottom side and top for being separately positioned on fruit output channel 6 Two rows of fruit of side promote wheel 71, and fruit promotes the axially extending direction of wheel 71 and the axially extending direction of active runner 51 flat It goes, all fruit promote the rotation direction of wheel 71 identical in same row, and two rows of fruit promote the rotation direction of wheel 71 on the contrary, two rows Fruit promotes and forms fruit output channel between wheel 71.

Fruit promote wheel 71 mounting means are as follows: the bottom side and top side of fruit output channel 6 be oppositely disposed there are two use In the second socket 61 for accommodating fruit propulsion wheel 71, fruit promotes wherein one end and the fruit output channel 6 of wheel central axis 73 It is rotatably assorted, the side wall sealing of the other end and dip tank 3 is rotatably assorted.

As shown in Figure 4 and Figure 6, wheel 71, rotating manner are promoted for the fruit in 6 bottom side of fruit output channel are as follows: The first driving gear 72 is fixedly installed on active roller centre axis 55, and fruit is promoted and is fixedly installed on wheel central axis 73 First driven gear 74 is provided with and the first driven gear 74 and between the first driving gear 72 and the first driven gear 74 The side wall sealing of the first transmission gear 75 that one driving gear 72 is meshed, the first transmission gear central axis 76 and dip tank 3 turns Dynamic cooperation；To be meshed with two neighboring first driven gear 74 is provided between two adjacent the first driven gears 74 Two transmission gears 77, the second transmission gear central axis 78 are also rotatably assorted with the sealing of the side wall of dip tank 3.In this way, in the first electricity When machine drives active roller centre axis 55 to rotate, the first driving gear 72 can also pass through the first transmission gear 75 and the first driven tooth The engagement of wheel 74 drives a fruit to promote 71 rotation of wheel, and then passes through the second transmission gear 77 and the first driven gear 74 Engagement drive other fruit promote wheel 71 rotation.

And wheel 71, rotating manner an are as follows: fruit wherein are promoted for the fruit in 6 top side of fruit output channel It promotes and is fixedly installed with the second driving gear 79 on wheel central axis 73, this fruit promotes wheel central axis 73 and the second motor (figure In be not shown) output shaft fixed connection；And promoted in other fruit and the second driven gear 710 is fixedly mounted on wheel central axis 73, and It is driven with the second driving gear 79 and second simultaneously that one energy is set between the second driven gear 710 and the second driving gear 79 Third transmission gear 711 that gear 710 is meshed, one is also provided between two neighboring second driven gear 710 can be with The third transmission gear 711 that two neighboring second driven gear 710 is meshed, third transmission gear central axis 712 and dip tank 3 Side wall sealing be rotatably assorted.

As shown in Figure 3 and Figure 4, bellows 8 are provided with outside dip tank 3, the top of bellows 8 is equipped with air inlet 81, the bellows 8 Bottom is equipped with air outlet 82, is equipped in fan 83 casees 8 and is between air inlet 81 and air outlet 82, for driving air in wind The inside and outside fan 83 flowed of case 8.And the discharge end of fruit output channel 6 is then connected with the air-dried pipeline 9 for passing through bellows 8, air-dries Pipeline 9 is inclined in bellows 8, and several ventilation openings 91 are offered on tube wall.

The bottom of bellows 8 offers coating liquid recovery port 84, is connected with film between coating liquid recovery port 84 and dip tank 3 Liquid recovery channel 85；With the extending sleeve 86 in bellows 8, after coating liquid is accumulated in 8 bottom of bellows, film at air outlet 82 Liquid can only be flowed out from coating liquid recovery port 84, flow out without overflowing in extending sleeve 86 from air outlet 82, coating liquid is avoided to waste.

In the present embodiment, the pipeline 16 that gathers materials, fruit conveyance conduit 4, the internal diameter of fruit output channel 6 and air-dried pipeline 9 are equal Be adapted with the outer diameter of the film water fruit to be coated poured into feed hopper, film water fruit to be coated the pipeline 16 that gathers materials, fruit conveyance conduit 4, It is only capable of passing through one by one in fruit output channel 6 and air-dried pipeline 9.

The working principle of the present embodiment fruit screening and fresh-keeping film-coating machine are as follows:

Film water fruit to be coated is poured into feed hopper 15, film water fruit to be coated falls into the second conveyer belt 14 of top layer's sieve unit On, the film water fruit to be coated that partial size is greater than the second conveyer belt 14 is trapped on the second conveyer belt 14, and is sent by the second conveyer belt 14 Into the pipeline 16 that gathers materials, enter corresponding fruit conveyance conduit 4 through feed opening；And partial size less than the second conveyer belt 14 spacing to Film fruit is then fallen on second conveyer belt 14 of next layer of sieve unit, repeatedly, three kinds of specifications that finishing screen separates Film water fruit to be coated enter in corresponding fruit conveyance conduit 4；

Film water fruit to be coated is moved to fruit delivery pipe under the action of the first conveyer belt 53 after entering in fruit conveyance conduit 4 The discharge end in road 4, the coating liquid filled in fruit conveyance conduit 4 in the process carry out film to fruit；It is moved to fruit The fruit of the discharge end of conveyance conduit 4 enters fruit output channel under the action of two rows of fruit promote wheel 71, and is gradually ramped up To air-dried channel；The fruit of film along the air-dried channel being obliquely installed roll one by one in discharge end, wind in the process Fan 83 in case 8 dries up the envelope of fruit surface.

Claims (10)

1. a kind of fruit screening and fresh-keeping film-coating machine, which is characterized in that including being carried out for treating film fruit by outer diameter size The screening plant (1) of gradation sizing, and the coating device (2) for carrying out film to the film water fruit to be coated after screening, it is described Screening plant (1) include at least two feed openings for exporting film water fruits to be coated at different levels, the coating device (2) packet It includes:

It is loaded with the dip tank (3) of coating liquid；

The fruit conveyance conduit (4) being placed in dip tank (3), fruit conveyance conduit (4) are connected and correspond with feed opening It is arranged, offers at least one inlet (41), the fruit conveyance conduit (4) on the tube wall of the fruit conveyance conduit (4) Bottom be equipped with the first fruit conveyor structure (5)；

The fruit output channel (6) being connected with the discharge end of fruit conveyance conduit (4), the fruit output channel (6) is relative to water Fruit conveyance conduit (4) tilts upward setting, and the tube wall of fruit output channel (6) is equipped with the second fruit conveyor structure (7)；

For carrying out air-dried air dried cell to the fruit after film, which includes being connected with fruit output channel (6) Air-dried pipeline (9)；

The internal diameter of the air-dried pipeline (9), fruit output channel (6) and fruit conveyance conduit (4) with film water fruit to be coated Outer diameter is adapted.

2. fruit screening as described in claim 1 and fresh-keeping film-coating machine, which is characterized in that the first fruit conveyor structure (5) include:

Active runner (51) in the discharge end of fruit conveyance conduit (4) is set；

Driven runner (52) in the feed end of fruit conveyance conduit (4) is set；

The first conveyer belt (53) being set between driven runner (52) and active runner (51)；

Active roller centre axis (55) and driven roller centre axis (54) are rotatably assorted with the sealing of the side wall of dip tank (3), main The output shaft fixed connection of turn wheel central axis (55) and first motor；The bottom side of the fruit conveyance conduit (4) offers and is somebody's turn to do Adaptable the first socket (42) of the width of conveyer belt.

3. fruit screening as claimed in claim 2 and fresh-keeping film-coating machine, which is characterized in that the fruit output channel (6) In the dip tank (3), it is oppositely disposed that there are two the second socket (61), Mei Ge on the tube wall of fruit output channel (6) It is equipped with a draining fruit at two sockets (61) and promotes wheel (71), all fruit promote the rotation direction phase of wheel (71) in same row Together, two rows of fruit promote the rotation direction of wheel (71) opposite；

Fruit promotes wherein one end of wheel central axis (73) to be rotatably assorted with fruit output channel (6), the other end and dip tank (3) Side wall sealing be rotatably assorted；Dip tank (3) is externally provided with the driving mechanism for driving fruit to promote wheel central axis (73) rotation.

4. fruit screening as claimed in claim 3 and fresh-keeping film-coating machine, which is characterized in that two rows of fruit promote wheel (71) respectively Top side and bottom side in fruit output channel (6), fruit promote the axially extending direction of wheel (71) and active runner (51) Axially extending direction is parallel；

Wheel (71) is promoted for the fruit in fruit output channel (6) bottom side, the driving mechanism includes:

It is fixed on active roller centre axis (the first driving gear (72) on 55；

It is fixed on fruit and promotes the first driven gear (74) taken turns on central axis (73)；

The first transmission gear (75) being meshed with the first driven gear (74) and the first driving gear (72), the first transmission gear Central axis (76) and the side wall sealing of dip tank (3) are rotatably assorted；

The second transmission gear (77) being meshed with two adjacent the first driven gears (74), the second transmission gear central axis (78) it is rotatably assorted with the sealing of the side wall of dip tank (3)；

Wheel (71) is promoted for the fruit in fruit output channel (6) top side, the driving mechanism includes:

It is fixed therein a fruit and promotes the second driving gear (79) taken turns on central axis (73), which promotes wheel central axis (73) with the output shaft fixed connection of the second motor；

It is fixed on other fruit and promotes the second driven gear (710) taken turns on central axis (73)；

Be meshed with the second driving gear (79) and the second driven gear (710), with two neighboring second driven gear (710) phase The third transmission gear (711) of engagement, third transmission gear (711) central axis and the side wall sealing of dip tank (3) are rotatably assorted.

5. fruit screening as described in claim 1 and fresh-keeping film-coating machine, which is characterized in that the air dried cell includes bellows (8), the top of the bellows (8) is equipped with air inlet (81), and the bottom of the bellows (8) is equipped with air outlet (82), is equipped in bellows (8) Fan (83) between air inlet (81) and air outlet (82), for driving air to flow inside and outside bellows (8)；

The air-dried pipeline (9) is inclined in bellows (8), and the feed end and fruit of the air-dried pipeline (9) export Pipeline (6) is connected, and the discharge end of the air-dried pipeline (9) extends to bellows (8) outside；It air-dries and is opened up on the tube wall of pipeline (9) There are several ventilation openings (91).

6. fruit screening as claimed in claim 5 and fresh-keeping film-coating machine, which is characterized in that open the bottom of the bellows (8) Equipped with coating liquid recovery port (84), coating liquid recovery channel (85) are connected between coating liquid recovery port (84) and dip tank (3)；

The extending sleeve (86) for preventing coating liquid from flowing out from air outlet (82), the extension are equipped at the air outlet (82) Set (86) is in bellows (8).

7. fruit screening and fresh-keeping film-coating machine as described in any one of claim 1-6, which is characterized in that the screening Device (1) includes rack (11), and rack (11) is equipped with vertically disposed multiple sieve units, and each sieve unit is equal Include:

The active roller bearing (12) and supplementary rder (13) being rotatably assorted respectively with the rack (11)；

It is set in several second conveyer belts between active roller bearing (12) and supplementary rder (13) and evenly distributed by default spacing (14)；

Third motor for driving the active roller bearing (12) to rotate；

The pipeline that gathers materials (16) of the discharge end of second conveyer belt (14) is set, and the feed end of the pipeline that gathers materials (16) is opened Equipped with the collection material mouth (17) that the discharge end with the second conveyer belt (14) is oppositely arranged, the feed opening, which is in, gathers materials pipeline (16) Discharge end；

With highly gradually decreasing locating for sieve unit, the spacing of two second conveyer belts (14) is successively successively decreased in corresponding sieve unit.

8. fruit screening as claimed in claim 7 and fresh-keeping film-coating machine, which is characterized in that in the upper of top layer's sieve unit Side, the rack (11) are equipped with the feed hopper (15) of the feed end in the second conveyer belt (14).

9. fruit screening as claimed in claim 8 and fresh-keeping film-coating machine, which is characterized in that the discharging of the feed hopper (15) It is adapted at a distance from the width in channel (151) and two second conveyer belts (14) for being respectively at top layer's sieve unit both ends, And the discharge outlet of tapping channel (151) is additionally provided with the baffle (152) close to the second conveyer belt (14) feed end side.

10. fruit screening as claimed in claim 7 and fresh-keeping film-coating machine, which is characterized in that the rack (11) is equipped with Protective net (18) in the second conveyer belt (14) two sides.