CN105410955A - Four-point extruding type walnut shell breaking equipment - Google Patents

Four-point extruding type walnut shell breaking equipment Download PDF

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Publication number
CN105410955A
CN105410955A CN201510921842.5A CN201510921842A CN105410955A CN 105410955 A CN105410955 A CN 105410955A CN 201510921842 A CN201510921842 A CN 201510921842A CN 105410955 A CN105410955 A CN 105410955A
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CN
China
Prior art keywords
walnut
rocking bar
hole
guide rail
pressurizing unit
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Granted
Application number
CN201510921842.5A
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Chinese (zh)
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CN105410955B (en
Inventor
闫茹
赵奎鹏
郑甲红
薛启程
李大军
余秦程
杨睿
王凡
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Shaanxi University of Science and Technology
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Shaanxi University of Science and Technology
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Priority to CN201510921842.5A priority Critical patent/CN105410955B/en
Publication of CN105410955A publication Critical patent/CN105410955A/en
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    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23N—MACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLES OR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS
    • A23N5/00—Machines for hulling, husking or cracking nuts
    • A23N5/08—Machines for hulling, husking or cracking nuts for removing fleshy or fibrous hulls of nuts

Abstract

The invention discloses four-point extruding type walnut shell breaking equipment which comprises a rack, a motor, an extruding device, a driving device and a feeding device. The motor is located on a motor installing plate arranged at the bottom of the rack and connected with the lower end of a total rocking rod of the driving device through a connecting rod, and the motor drives the total rocking rod to swing; a pushing rod does straight reciprocating motion along a guide rail, and the other end of the pushing rod is connected with a rocking rod of the extruding device to drive the rocking rod to do swinging motion; the feeding device is fixed on the rocking rod of the extruding device, and the extruding device drives a feeding plate to feed materials; a walnut is put into a hopper, the rocking rod swings left and right, when the rocking rod rightwards swings to the extreme position, a hole formed in the feeding plate coincides with a hole formed in the bottom of the hopper, the walnut drops into the hole formed in the feeding plate, the rocking rod leftwards swings, when a hole formed in a striker plate coincides with a walnut extruding hole, the walnut drops into the extruding hole, and after extruding is completed, the striker plate is opened, so that the walnut falls into a discharge hopper. According to the four-point extruding type walnut shell breaking equipment, the walnut is extruded from four points for one time, so that walnut shell breaking is fuller; the advantages of being complete in shell breaking, high in efficiency and convenient to operate are achieved.

Description

A kind of 4 extrusion-type walnut crust breaking device
Technical field
The invention belongs to agriculture machining technique field, be specifically related to a kind of 4 extrusion-type walnut crust breaking device.
Background technology
China is that walnut output ranks first in the world, and the level of processing walnut is but not advanced.In walnut preliminary working, it is main that walnut shell-breaking remains artificial broken shell, and machine broken shell is auxiliary.The walnut processing mechanization of China is less than 10%.Artificial broken shell, the amount of labour is large, efficiency is low, and pollution index high, affect walnut quality, outlet can not be up to standard, greatly reduces the added value of walnut.
Artificial broken shell not only labor intensive, efficiency is also low, and health can not be guaranteed.Now, it is incomplete that various rejuvenator also all also exists some broken shells, and Gao Luren leads the problems such as low.
Walnut kernel is of high nutritive value, and contains containing, fat containing a large amount of protein, and, the amino acid, vitamin, trace element etc. of walnut kernel also containing human body indispensability.Walnut is suitable for deep processing.The walnut amount of developed country 80% puts goods on the market with the form that its deep processing is product, the intensive processing ability wretched insufficiency of China to walnut, and level of processing is low, seriously reduces added value of product lower,
Current a lot of shell-breaking machine of walnut, but principle is similar, and one is the broken shell of fixed gap extrusion friction, and two is blow-breakings, and three is chemical attack broken shells, and four is centrifugal bump broken shells, and five is vacuum broken shells, and six is ultrasonic wave broken shells.Nearly all there is various weak point in existing shell-breaking machine of walnut, as broken shell is unclean, shell-breaking rate is low, and walnut kernel is broken, and Gao Luren leads low, and this greatly reduces the sales volume of walnut kernel, also just reduces the commercial value of walnut.So a kind of effective crust breaking device of present urgent need improves shell-breaking rate and Gao Luren leads, to improve the financial value of walnut.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the object of the invention is to provide a kind of 4 extrusion-type walnut crust breaking device, this equipment can carry out extrusion cracking by disposable orthogonal four points from walnut shell, the abundant broken shell of walnut can be made, according to walnut size adjustment extrusion cracking degree, any size walnut can be applicable to, and simple to operate, broken shell is complete, the feature that walnut kernel is complete.
For achieving the above object, the technical solution used in the present invention is: a kind of 4 extrusion-type walnut crust breaking device, comprise motor, frame, transmission device, pressurizing unit, feeding devices at 4;
Described motor is positioned on the motor mounting plate bottom frame, and motor is connected by the lower end of connecting rod with total rocking bar of transmission device; The upper end of total rocking bar is flexibly connected with push rod, and push rod does straight reciprocating motion by guide rail slide block along rail plate; The other end of push rod drives pressurizing unit motion; Feeding device is fixed on pressurizing unit rocking baron, pressurizing unit motion drives feeding device material loading.
Described frame comprises motor mounting plate, and motor mounting plate is positioned at the below of frame; The middle part of frame is provided with entablature and sill, entablature and sill fixed guide support and install pressurizing unit; Rail brackets installs rail plate; Be provided with the striker plate of extrusion cracking in pressurizing unit, the bottom of pressurizing unit is provided with discharge bucket; Turning cylinder is arranged between entablature and sill, as the pivot point of total rocking bar; Gear is installed on the rotating shaft, and engage with tooth bar, tooth bar is located on striker plate, and the rotating band carry-over bar of gear moves, and drives striker plate to reciprocatingly move.
Described transmission device comprises connecting rod, total rocking bar, push rod, guide rail, guide rail slide block, sliding sleeve; Transmission device integral installation is in frame; One end of connecting rod is arranged on the rotating disk of motor, and the other end is arranged on the lower end of total rocking bar by pin; The rotation of motor drives total rocking bar to swing; Push rod is arranged on rail brackets by linear bearing, and push rod two ends are connected with total rocking bar with guide rail slide block respectively, drives guide rail slide block to do straight reciprocating motion; Guide rail slide block is arranged on guide rail by linear bearing, and guide rail is fixed on rail brackets; Sliding sleeve connects rocking bar and guide rail slide block, and guide rail slide block drives rocking bar to do oscillating motion along guide rail straight reciprocating motion, drives pressurizing unit to carry out extruding action.
Described pressurizing unit comprises briquetting fixed head, rocking bar, pressing mechanism, crushing block, rotating disk; Briquetting fixed head is arranged on the entablature of frame, fixing whole pressurizing unit; One end of rocking bar is fixed on pressing mechanism, drives pressing mechanism motion; Pressing mechanism is fixed on briquetting fixed head, and pressing mechanism comprises crushing block and rotating disk, and the reciprocating rotation of rotating disk drives the inside and outside swing of crushing block, carries out broken shell to walnut;
Described feeding device comprises hopper and upper flitch, and hopper is fixedly mounted on upper rack, is positioned at directly over pressurizing unit; Upper flitch is while be arranged on rocking bar, and another side is arranged on the support of pressing mechanism; Rocking bar drives upper flitch to do wobbling action; When the hole of upper flitch and the hole of hopper coincide, walnut just all drops out hopper; Walnut passing hole in discharge bucket falls into the hole of flitch; When rocking bar swings to extreme position left, the hole of striker plate just in time coincides with the walnut extruded hole of pressing mechanism, and walnut falls into walnut extruded hole.
Described pressing mechanism has four.
Described upper flitch with immediately below the distance 16-22mm of pressurizing unit, with directly over hopper distance 18-22mm.
Described upper flitch is steel plate, and upper flitch is provided with the hole larger than walnut diameter.
When described rocking bar swings to extreme position, the hole of striker plate just in time coincides with the walnut extruded hole of pressing mechanism; When rocking bar puts extreme position to the right, the hole of upper flitch just in time coincides with the hole of feed hopper bottom.
The present invention has following advantage:
1) the present invention adopts the method for 4 extrusion cracking, carries out 4 extruding from the orthogonal direction of walnut simultaneously, meets " 4 pressurizations " principle, ensures the integrality of walnut kernel, improves Gao Luren and lead, and can adapt to the thick walnut shell-breaking of different shell.
2) the present invention can regulate extruding distance, can reduce extruding distance for large walnut, can increase extruding distance for little walnut, ensures the integrality of broken shell, so can carry out broken shell to the walnut of any size.
3) transmission device of the present invention adopts four-bar mechanism, greatly reduces the complexity of mechanism, low cost of manufacture, easy to operate feature.
Accompanying drawing explanation
Fig. 1 is front view of the present invention.
Fig. 2 is side view of the present invention.
Fig. 3 is bottom plan view of the present invention.
Fig. 4 is the diagram of gears of the present invention.
Fig. 5 is pressing mechanism overall structure figure of the present invention.
Fig. 6 is pressing mechanism close-up schematic view of the present invention.
Fig. 7 is the top view that upper flitch of the present invention swings to limit on the right-right-hand limit.
Fig. 8 is the top view that upper flitch of the present invention swings to limit on the left.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
See Fig. 1,2,3,4,5,6, a kind of 4 extrusion-type walnut crust breaking device, comprise motor 1, frame 2, transmission device 3, pressurizing unit 4, feeding devices 5 at 4;
Described motor 1 is positioned on the motor mounting plate 201 bottom frame 2, and motor is connected with the lower end of total rocking bar 302 of transmission device 3 by connecting rod 301; The upper end of total rocking bar 302 is connected by pin with push rod 303, and push rod does straight reciprocating motion by guide rail slide block 305 along rail plate 304; The other end of push rod 303 drives pressurizing unit 4 to move simultaneously; Feeding device 5 is fixed on pressurizing unit 4 rocking baron 402, pressurizing unit 4 moves and drives feeding device 5 material loading.
Described frame 2 comprises motor mounting plate 201, entablature 202, sill 203, rail brackets 204, striker plate 205, discharge bucket 206, turning cylinder 207, gear 208, tooth bar 209; Described motor mounting plate 201 is positioned at the below of frame 2, for mounted motor; Described entablature 202 and sill 203 are positioned at the middle part of frame, for fixed guide support 204 and installation pressurizing unit 4; Described rail brackets 204 is for installing rail plate 304; Described striker plate 205, for blocking the walnut before broken shell, is allowed to condition in pressurizing unit 4 and carries out extrusion cracking, and the back striker plate 205 of broken shell allows the walnut after broken shell fall, and falls into discharge bucket 206; Turning cylinder 207 is arranged between entablature 202 and sill 203, as the pivot point of total rocking bar 302; Gear 208 is arranged on turning cylinder 207, and for engaging with tooth bar 209, tooth bar 209 is arranged on striker plate 205, and the rotating band carry-over bar 209 of gear 208 moves, thus drives striker plate 205 to reciprocatingly move.
Described transmission device 3 comprises connecting rod 301, total rocking bar 302, push rod 303, guide rail 304, guide rail slide block 305, sliding sleeve 306.The integral installation of described transmission device 3 is in frame 2, and one end of described connecting rod 301 is arranged on by pin on the rotating disk of motor 1, and the other end is arranged on the lower end of total rocking bar 302 by pin, and the rotation of motor drives total rocking bar 302 to swing.Described push rod 303 is arranged on rail brackets 204 by linear bearing, and push rod two ends are connected with total rocking bar 302 with guide rail slide block 305 respectively, drives guide rail slide block 305 to do straight reciprocating motion; Described guide rail slide block 305 is arranged on guide rail 304 by linear bearing, and guide rail 304 is fixed on rail brackets 204; Described sliding sleeve 306 is connected to rocking bar 402 and the guide rail slide block 305 of pressurizing unit 4, makes guide rail slide block 305 drive the rocking bar 402 of pressurizing unit 4 to do oscillating motion along the straight reciprocating motion of guide rail 304, thus drives whole pressurizing unit 4 to carry out extruding action.
Described pressurizing unit 4 comprises briquetting fixed head 401, rocking bar 402, pressing mechanism 403, crushing block 404, rotating disk 405.Briquetting fixed head 401 is arranged on the entablature 203 of frame 2 by bolt, for fixing whole pressurizing unit; One end of described rocking bar 402 is fixed on pressing mechanism 403, for driving the motion of whole pressing mechanism.Described pressing mechanism 403 has four, is separately fixed on briquetting fixed head 401, and pressing mechanism 403 comprises again crushing block 404 and rotating disk 405, and the reciprocating rotation of rotating disk 405 drives the inside and outside swing of crushing block 404, thus carries out broken shell action to walnut.
See Fig. 7,8, described feeding device 5 comprises hopper 501 and upper flitch 502, and described hopper 501 is fixedly mounted on frame 2 top, is positioned at directly over pressurizing unit 4, for storing the walnut treating broken shell; Described upper flitch 502 is one block of steel plate with the hole larger than walnut diameter, and upper flitch is arranged on the rocking bar 402 of pressurizing unit 4, and another side is arranged on the support of pressing mechanism 403; When rocking bar 402 swings, upper flitch 502 is followed rocking bar 402 and is done wobbling action.Upper flitch 502 with immediately below the distance 16-22mm of pressurizing unit 4, with directly over hopper 501 apart from 18-22mm, when only having the hole of upper flitch 502 and the hole of hopper 501 to coincide, walnut could all drop out hopper 501.When rocking bar 402 puts extreme position to the right, the hole of upper flitch 502 just in time with hopper 501 bottom hole coincide, the walnut passing hole in hopper 501 falls into the hole of flitch.Rocking bar 402 swings left, and when swinging to extreme position, the hole of striker plate just in time coincides with the walnut extruded hole of pressing mechanism 403, and walnut falls into walnut extruded hole.
During work, operation principle of the present invention:
Motor is connected with total rocking bar 302 lower end of transmission device 3 by connecting rod 301, motor 2 drives total rocking bar 302 to swing when rotating, total rocking bar 301 upper end is connected by pin with push rod 303, push rod does straight reciprocating motion by guide rail slide block 305 along guide rail 304, simultaneously the other end of push rod 303 to be connected with the rocking bar 402 of pressurizing unit 4 by sliding sleeve 306 and to drive rocking bar 402 to do oscillating motion, feeding device 5 is fixed on the rocking bar 402 of pressurizing unit 4, and pressurizing unit 4 moves and drives material loading plate 501 material loading.
Walnut puts into hopper 501, rocking bar 402 swings, when it puts extreme position to the right, the hole of upper flitch 502 just in time with hopper 501 bottom hole coincide, the walnut passing hole in hopper 501 falls into the hole of flitch, then, rocking bar 402 swings left, when the hole of striker plate just in time coincides with the walnut extruded hole of pressing mechanism 403, walnut falls in the extruded hole of pressing mechanism 403, carries out extruding action.After walnut has extruded, the striker plate 205 of walnut, under the gear motion of gear 208 and tooth bar 209, has automatically been opened and walnut is fallen, fallen in discharge bucket 206 by self gravitation, completed whole broken shell process.This broken shell mechanism is disposable carries out walnut extruding from four points, makes walnut shell-breaking more abundant.

Claims (9)

1. 4 extrusion-type walnut crust breaking device, comprise motor (1), frame (2), transmission device (3), 4 pressurizing units (4), feeding device (5);
Described motor (1) is positioned on the motor mounting plate (201) of frame (2) bottom, and motor is connected with the lower end of total rocking bar 302 of transmission device (3) by connecting rod (301); The upper end of total rocking bar (302) is flexibly connected with push rod (303), and push rod does straight reciprocating motion by guide rail slide block (305) along rail plate 304; The other end of push rod (303) drives pressurizing unit (4) motion; Feeding device 5 is fixed on pressurizing unit 4 rocking bar (402), on, pressurizing unit (4) motion drives feeding device (5) material loading.
2. a kind of 4 extrusion-type walnut crust breaking device according to claim 1, it is characterized in that, described frame (2) comprises motor mounting plate (201), and motor mounting plate (201) is positioned at the below of frame (2); The middle part of frame is provided with entablature (202) and sill (203), entablature and sill fixed guide support (204) and install pressurizing unit (4); Rail brackets (204) is installed rail plate (304); Be provided with the striker plate (205) of extrusion cracking in pressurizing unit (4), the bottom of pressurizing unit (4) is provided with discharge bucket (206); Turning cylinder (207) is arranged between entablature (202) and sill (203), as the pivot point of total rocking bar (302); Gear (208) is arranged on turning cylinder (207), engage with tooth bar (209), tooth bar (209) is located on striker plate (205), the rotating band carry-over bar (209) of gear (208) is mobile, drives striker plate (205) to reciprocatingly move.
3. a kind of 4 extrusion-type walnut crust breaking device according to claim 1, it is characterized in that, described transmission device (3) comprises connecting rod (301), total rocking bar (302), push rod (303), guide rail (304), guide rail slide block (305), sliding sleeve (306); Transmission device (3) integral installation is in frame (2); One end of connecting rod (301) is arranged on the rotating disk of motor (1), and the other end is arranged on the lower end of total rocking bar (302); The rotation of motor drives total rocking bar (302) to swing; Push rod (303) is arranged on rail brackets (204) by linear bearing, push rod two ends are connected with total rocking bar (302) with guide rail slide block (305) respectively, drive guide rail slide block (305) to do straight reciprocating motion; Guide rail slide block (305) is arranged on guide rail (304) by linear bearing, and guide rail (304) is fixed on rail brackets (204); Sliding sleeve (306) connects rocking bar (402) and guide rail slide block (305), guide rail slide block (305) drives rocking bar (402) to do oscillating motion along guide rail (304) straight reciprocating motion, drives pressurizing unit (4) to carry out extruding action.
4. a kind of 4 extrusion-type walnut crust breaking device according to claim 1, it is characterized in that, described pressurizing unit (4) comprises briquetting fixed head (401), rocking bar (402), pressing mechanism (403), crushing block (404), rotating disk (405); Briquetting fixed head (401) is arranged on the entablature (203) of frame (2), fixing whole pressurizing unit; One end of rocking bar (402) is fixed on pressing mechanism (403), drives pressing mechanism motion; Pressing mechanism (403) is fixed on briquetting fixed head (401), pressing mechanism (403) comprises crushing block (404) and rotating disk (405), the reciprocating rotation of rotating disk (405) drives the inside and outside swing of crushing block (404), carries out broken shell to walnut.
5. a kind of 4 extrusion-type walnut crust breaking device according to claim 1, it is characterized in that, described feeding device (5) comprises hopper (501) and upper flitch (502), hopper (501) is fixedly mounted on frame (2) top, is positioned at directly over pressurizing unit (4); Upper flitch is while be arranged on rocking bar (402), and another side is arranged on the support of pressing mechanism (403); In rocking bar (402) drive, flitch (502) does wobbling action; When the hole of upper flitch (502) and the hole of hopper (501) coincide, walnut just all drops out hopper (501); Walnut in discharge bucket (501) falls into the hole of flitch; When rocking bar (402) swings to extreme position left, the hole of striker plate just in time coincides with the walnut extruded hole of pressing mechanism (403), and walnut falls into walnut extruded hole.
6. a kind of 4 extrusion-type walnut crust breaking device according to claim 4, is characterized in that, described pressing mechanism (403) has four.
7. a kind of 4 extrusion-type walnut crust breaking device according to claim 5, is characterized in that, described upper flitch (502) with immediately below the distance 16-22mm of pressurizing unit (4), with directly over hopper (501) distance 18-22mm.
8. a kind of 4 extrusion-type walnut crust breaking device according to claim 7, is characterized in that, described upper flitch 502 is steel plate, and upper flitch is provided with the hole larger than walnut diameter.
9. a kind of 4 extrusion-type walnut crust breaking device according to claim 4, is characterized in that, when described rocking bar (402) swings to extreme position, the hole of striker plate just in time coincides with the walnut extruded hole of pressing mechanism (403); When rocking bar (402) puts extreme position to the right, the hole of upper flitch (502) just in time coincides with the hole of hopper (501) bottom.
CN201510921842.5A 2015-12-14 2015-12-14 A kind of 4 extrusion-type walnut crust breaking devices Active CN105410955B (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106108041A (en) * 2016-08-12 2016-11-16 陈志辉 A kind of Fructus Pistaciae Verae tapping machine
CN107756666A (en) * 2017-11-28 2018-03-06 哈尔滨理工大学 A kind of material pressing device of test-type banbury
CN109480318A (en) * 2019-01-14 2019-03-19 济宁市农业科学研究院 A kind of agricultural product hatching spine
CN111713710A (en) * 2020-07-29 2020-09-29 安徽硕景机电设计服务有限公司 Deep processing technology of nuts
CN112790399A (en) * 2021-02-04 2021-05-14 塔里木大学 Multi-station pneumatic impact type walnut shell breaking machine for agricultural machinery
CN114354313A (en) * 2021-12-29 2022-04-15 云南华测检测认证有限公司 Food detection device with built-in pretreatment structure
US11771126B2 (en) 2019-08-09 2023-10-03 Qingdao university of technology Multi-station adaptive walnut shell pre-breaking system

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DE102010034034B3 (en) * 2010-08-09 2012-02-09 Manouchehr Fouladvand Automatic walnut peeling device has cutter with circular saw blade which is engaged with guide passage, where working portion is formed with respect to rear side of guide passage through slot, and casters to change shape of guide passage
CN202714162U (en) * 2012-06-05 2013-02-06 浙江工业大学 Pecan husking machine
CN204232228U (en) * 2014-09-19 2015-04-01 谢聚良 Microminiature is handled up shell-breaking machine of walnut automatically
CN204466840U (en) * 2015-02-13 2015-07-15 陕西科技大学 A kind of rotary extrusion type shell-breaking machine of walnut
CN105011331A (en) * 2014-04-30 2015-11-04 华中农业大学 An improved double gear wheel-toothed plate walnut shelling device
CN205284923U (en) * 2015-12-14 2016-06-08 陕西科技大学 4 broken shell equipment of extrusion formula walnut

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Publication number Priority date Publication date Assignee Title
DE102010034034B3 (en) * 2010-08-09 2012-02-09 Manouchehr Fouladvand Automatic walnut peeling device has cutter with circular saw blade which is engaged with guide passage, where working portion is formed with respect to rear side of guide passage through slot, and casters to change shape of guide passage
CN102326852A (en) * 2011-10-14 2012-01-25 西北工业大学 Continuous walnut shell breaking machine
CN202714162U (en) * 2012-06-05 2013-02-06 浙江工业大学 Pecan husking machine
CN105011331A (en) * 2014-04-30 2015-11-04 华中农业大学 An improved double gear wheel-toothed plate walnut shelling device
CN204232228U (en) * 2014-09-19 2015-04-01 谢聚良 Microminiature is handled up shell-breaking machine of walnut automatically
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CN205284923U (en) * 2015-12-14 2016-06-08 陕西科技大学 4 broken shell equipment of extrusion formula walnut

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106108041A (en) * 2016-08-12 2016-11-16 陈志辉 A kind of Fructus Pistaciae Verae tapping machine
CN107756666A (en) * 2017-11-28 2018-03-06 哈尔滨理工大学 A kind of material pressing device of test-type banbury
CN109480318A (en) * 2019-01-14 2019-03-19 济宁市农业科学研究院 A kind of agricultural product hatching spine
US11771126B2 (en) 2019-08-09 2023-10-03 Qingdao university of technology Multi-station adaptive walnut shell pre-breaking system
CN111713710A (en) * 2020-07-29 2020-09-29 安徽硕景机电设计服务有限公司 Deep processing technology of nuts
CN112790399A (en) * 2021-02-04 2021-05-14 塔里木大学 Multi-station pneumatic impact type walnut shell breaking machine for agricultural machinery
CN114354313A (en) * 2021-12-29 2022-04-15 云南华测检测认证有限公司 Food detection device with built-in pretreatment structure
CN114354313B (en) * 2021-12-29 2023-12-26 云南华测检测认证有限公司 Food detection device with built-in pretreatment structure

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