CN109529982A - It is a kind of agricultural experiment use soil crushing device - Google Patents
It is a kind of agricultural experiment use soil crushing device Download PDFInfo
- Publication number
- CN109529982A CN109529982A CN201811457080.8A CN201811457080A CN109529982A CN 109529982 A CN109529982 A CN 109529982A CN 201811457080 A CN201811457080 A CN 201811457080A CN 109529982 A CN109529982 A CN 109529982A
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- Prior art keywords
- wall
- bolted
- welded
- exterior walls
- crushing device
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C1/00—Crushing or disintegrating by reciprocating members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
- B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/10—Crushing or disintegrating by roller mills with a roller co-operating with a stationary member
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/50—Cleaning
- B07B1/54—Cleaning with beating devices
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention discloses a kind of agriculture experiment soil crushing devices, including bottom plate, supporting leg has been bolted in the bottom base plate outer wall, and supporting leg bottom outer wall is provided with scroll wheel, the bottom plate top exterior walls are provided with the first rectangular channel, and first rectangular channel surrounding inner wall the second electric sliding rail has been bolted, the second electric sliding rail top inner wall slidably connects the first electronic sliding block, and first electronic sliding block top exterior walls be welded with hack case, support transverse slat has been bolted in hack case side outer wall, the support transverse slat top exterior walls are provided with the second rectangular channel, and second rectangular channel top exterior walls be provided with the first electric sliding rail.Two crushing teeth wheel rotation intermeshings effectively carry out primary comminution to the soil block in feed hopper in the present invention, the soil crushing device facilitated in hack case is sufficiently crushed, it has saved the plenty of time, while the crushing rod on hack case both sides can be with collective effect to being crushed comprehensively.
Description
Technical field
The present invention relates to agricultural technology fields more particularly to a kind of agricultural experiment to use soil crushing device.
Background technique
At present when agricultural planting laboratory cultures crops, need the soil breaking of bulk at tiny soil, existing
In some agricultural planting laboratories, it is not exclusively used in the device of hack, in agricultural experiment, needs to use the soil of different size
Same plant is planted, is compared to obtain different data, for carrying out agricultural research, different size in order to obtain
Soil need to be crushed it.
Chinese patent grant number is the patent of CN201711028750.X, discloses a kind of agricultural soil crushing device, including handle
Hand (1), gear umbrella (4), rotation axis (9), big rotation axis (12) and gasoline engine support frame (16), it is characterised in that: the handle
(1) surface is connected with roller supporting bar (2), and handle (1) surface is equipped with shell (3), and roller supporting bar (2) bottom is set
It is equipped with idler wheel (8), shell (3) surface is connected with gasoline engine support column (6), and the gear umbrella (4) is internally provided with driving
Bar (5), drive rod (5) surface are provided with gasoline engine (7), and gasoline engine support column (6) surface is connected with shell (3),
And gasoline engine support column (6) surface is provided with gasoline engine (7), the idler wheel (8) is externally connected to roller supporting bar (2), described
Rotation axis (9) surface is provided with pinion gear set (10), and the pinion gear set (10) is externally connected to fixing axle (11), and fixed
It is equipped with clod-crusher (14), is provided with canine tooth wheel case (13) outside the big rotation axis (12), and canine tooth wheel case outside axis (11)
(13) fixing axle (11) are externally connected to.Had the disadvantage that in above-mentioned patent it is not obvious enough to the crushing effect of soil block, simultaneously
Soil block can not be carried out sufficiently broken.Cannot be horizontal and vertical to soil block progress common broken, crushing effect is bad.It cannot be right
Broken soil is sieved, and the experiment demand of experimenter is unable to satisfy.Therefore a kind of agriculture experiment is needed to be filled with hack
It sets.
Summary of the invention
It is not obvious enough to the crushing effect of soil block the purpose of the present invention is to solve existing in the prior art, it cannot will be native
Block carries out sufficiently broken.Cannot be horizontal and vertical to soil block progress common broken, crushing effect is bad.It cannot be to broken soil
Earth is sieved, and the experiment demand of experimenter is unable to satisfy, and soil crushing device is used in a kind of agricultural experiment proposed.
To achieve the goals above, present invention employs following technical solutions:
A kind of agricultural experiment soil crushing device, including bottom plate, supporting leg has been bolted in the bottom base plate outer wall, and props up
Support leg bottom outer wall is provided with scroll wheel, and the bottom plate top exterior walls are provided with the first rectangular channel, and the first rectangular channel surrounding inner wall
The second electric sliding rail has been bolted, the second electric sliding rail top inner wall slidably connects the first electronic sliding block,
And first electronic sliding block top exterior walls be welded with hack case, support transverse slat has been bolted in hack case side outer wall,
The support transverse slat top exterior walls are provided with the second rectangular channel, and the second rectangular channel top exterior walls are provided with the first electric sliding rail, described
First electric sliding rail top exterior walls slidably connect the second electronic sliding block, and the specification of the first electric sliding rail and the second electronic sliding block
Specification be adapted, the second electronic sliding block top exterior walls are welded with vertical supporting rod, and vertical supporting rod side outer wall passes through spiral shell
It tethers and is connected to connecting rod, the first electric expansion cylinder equidistantly distributed, institute is bolted in the connecting rod bottom outer wall
It states hack case two sides outer wall and is plugged with the second electric expansion cylinder, described second electric expansion cylinder one end inner wall is plugged with the second electricity
Dynamic telescopic rod, and the first connecting plate, hack case side outer wall has been bolted in second electric telescopic rod one end outer wall
It is provided with through slot, and is plugged with pull plate in through slot, hack case two sides inner wall is provided with groove, and in groove top and bottom
Wall is welded with the first spring, and first spring top and bottom outer wall are welded with the second connecting plate, and the second connecting plate
Bottom outer wall is provided with the second sieve, and the top and bottom outer wall of another first spring is welded with third connecting plate, and
Three connecting plate top exterior walls are provided with the first sieve, and the second screen bottom outer wall is provided with the fixed block equidistantly distributed, and
Fixed block bottom outer wall is welded with second spring, and support riser has been bolted in the bottom plate top exterior walls.
Further, the first electric expansion cylinder bottom interior wall is plugged with the first electric telescopic rod, and first electronic stretches
Fixed frame has been bolted in contracting bar bottom outer wall.
Further, motor, and one end outer wall of motor output shaft has been bolted in fixed frame side outer wall
It is welded with breaker roll.
Further, crushing rod has been bolted in first connecting plate side outer wall, and at the top of crushing rod and bottom
Portion's outer wall is welded with the crushing teeth equidistantly distributed.
Further, handle has been bolted in pull plate side outer wall, and handle outer wall is socketed with protective case.
Further, the pull plate top exterior walls are welded with the convex block equidistantly distributed, and convex block cross section is semicircle
Shape.
Further, the second spring is welded with metal ball far from one end outer wall of fixed block, and metal ball outer wall is equal
It is welded with steel needle.
Further, support riser side outer wall is welded with fixed column, and fixed column one end outer wall is connected by bolt
It is connected to feed hopper, feed hopper side outer wall is provided with broken gear.
Further, push rod has been bolted in support riser side outer wall, and push rod is far from support riser
One end outer wall is socketed with Anti-slip cover.
Further, first electric sliding rail, motor, the first electric expansion cylinder, the second electric expansion cylinder and the second electricity
Dynamic sliding rail passes through conducting wire and is connected with switch, and switch passes through wire connecting power.
The invention has the benefit that
1. two crushing teeth wheel rotation intermeshings are effectively to the soil in feed hopper by the broken gear and feed hopper of setting
Block carries out primary comminution, and the soil crushing device facilitated in hack case is sufficiently crushed, and has saved the plenty of time.
2. electronic drive breaker roll rotation passes through the first electric expansion cylinder by motor, breaker roll and the pull plate of setting
It moves up and down, so that breaker roll and pull plate collective effect carry out attrition crushing to soil block, while at the top of pull plate
The convex block cross section of outer wall setting is circle, effectively raises crushing effect.
3. the second electric telescopic rod is electric from second by the second electric expansion cylinder, the first connecting plate and the crushing rod of setting
It is stretched out in dynamic retracting cylinder and ejects crushing rod, while the crushing rod on hack case both sides can be longitudinal to having carried out with collective effect
Broken soil block carries out horizontal broken again, and effective soil block is crushed comprehensively.
4. can be sieved to the hack after the completion of being crushed by the first sieve of setting, the second sieve, facilitate people
The classification in later period use, meet the experiment demand of experimenter, while gravity when hack falls can be such that metal ball stretches up and down
Contracting taps the first sieve, effectively prevents the blocking of the first sieve.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that soil crushing device is used in a kind of agricultural experiment proposed by the present invention；
Fig. 2 is the hack case schematic diagram of internal structure that soil crushing device is used in a kind of agricultural experiment proposed by the present invention；
Fig. 3 is the inside grooves structural schematic diagram that soil crushing device is used in a kind of agricultural experiment proposed by the present invention；
Fig. 4 is the metal ball structural schematic diagram that soil crushing device is used in a kind of agricultural experiment proposed by the present invention；
Fig. 5 is the second electric sliding rail structural schematic diagram that soil crushing device is used in a kind of agricultural experiment proposed by the present invention.
In figure: 1 bottom plate, 2 first electronic sliding blocks, 3 hack casees, 4 scroll wheels, 5 support transverse slats, 6 second electronic sliding blocks, 7 the
One electric sliding rail, 8 vertical supporting rods, 9 connecting rods, 10 motors, 11 first electric expansion cylinders, 12 fixed frames, 13 feed hoppers, 14 are crushed
Roller, 15 broken gears, 16 support risers, 17 push rods, 18 first sieves, 19 second sieves, 20 grooves, 21 second electric expansions
Cylinder, 22 through slots, 23 first connecting plates, 24 crushing teeths, 25 crushing rods, 26 pull plates, 27 convex blocks, 28 first springs, 29 second connect
Fishplate bar, 30 second springs, 31 metal balls, 32 steel needles, 33 second electric sliding rails, 34 Anti-slip covers, 35 supporting legs.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1-5, a kind of agricultural experiment uses soil crushing device, including bottom plate 1,1 bottom outer wall of bottom plate to be bolted
There is supporting leg 35, and 35 bottom outer wall of supporting leg is provided with scroll wheel 4,1 top exterior walls of bottom plate are provided with the first rectangular channel, and first
The second electric sliding rail 33 has been bolted in rectangular channel surrounding inner wall, and 33 top inner wall of the second electric sliding rail slidably connects
First electronic sliding block 2, and the first electronic 2 top exterior walls of sliding block are welded with hack case 3,3 side outer wall of hack case is connected by bolt
It is connected to support transverse slat 5, support 5 top exterior walls of transverse slat are provided with the second rectangular channel, and the second rectangular channel top exterior walls are provided with the first electricity
Dynamic sliding rail 7,7 top exterior walls of the first electric sliding rail slidably connect the second electronic sliding block 6, and the specification of the first electric sliding rail 7 with
The specification of second electronic sliding block 6 is adapted, and the second electronic 6 top exterior walls of sliding block are welded with vertical supporting rod 8, and vertical supporting rod 8 one
Connecting rod 9 has been bolted in side outer wall, and it is electronic that first equidistantly distributed is bolted in 9 bottom outer wall of connecting rod
Retracting cylinder 11,3 two sides outer wall of hack case are plugged with the second electric expansion cylinder 21, the 21 one end inner wall grafting of the second electric expansion cylinder
There is the second electric telescopic rod, and the first connecting plate 23, hack case 3 one has been bolted in second electric telescopic rod one end outer wall
Side outer wall is provided with through slot 22, and pull plate 26 is plugged in through slot 22, and 3 two sides inner wall of hack case is provided with groove 20, and groove
20 top and bottom inner walls are welded with the first spring 28, and 28 top and bottom outer wall of the first spring is welded with the second connecting plate
29, and 29 bottom outer wall of the second connecting plate is provided with the second sieve 19, the top and bottom outer wall of another first spring 28 welds
There is third connecting plate, and third connecting plate top exterior walls are provided with the first sieve 18,19 bottom outer wall of the second sieve is provided with equidistantly
Fixed block from distribution, and fixed block bottom outer wall is welded with second spring 30, branch has been bolted in 1 top exterior walls of bottom plate
Support riser 16.
In the present invention, 11 bottom interior wall of the first electric expansion cylinder is plugged with the first electric telescopic rod, and the first electric expansion
Fixed frame 12 has been bolted in bar bottom outer wall, and motor 10, and motor has been bolted in 12 side outer wall of fixed frame
One end outer wall of 10 output shafts is welded with breaker roll 14, and crushing rod 25 has been bolted in 23 side outer wall of the first connecting plate,
And 25 top and bottom outer wall of crushing rod is welded with the crushing teeth 24 equidistantly distributed, 26 side outer wall of pull plate passes through bolt
It being connected with handle, and handle outer wall is socketed with protective case, 26 top exterior walls of pull plate are welded with the convex block 27 equidistantly distributed, and
27 cross section of convex block is semicircle, effectively raises crushing effect, to accelerate the broken speed to soil of device, mentions
High crushing effect.
Second spring 30 is welded with metal ball 31 far from one end outer wall of fixed block, and 31 outer wall of metal ball is welded with steel
Needle 32, gravity when hack falls can make about 31 metal ball flexible, tap the first sieve 18, effectively prevent the first sieve
18 blocking, support 16 side outer wall of riser is welded with fixed column, and feed hopper has been bolted in fixed column one end outer wall
13,13 side outer wall of feed hopper is provided with broken gear 15, and push rod 17 has been bolted in support 16 side outer wall of riser, and
Push rod 17 is socketed with Anti-slip cover 34 far from one end outer wall of support riser 16, and the first electric sliding rail 7, motor 10, first is electronic stretches
Contracting cylinder 11, the second electric expansion cylinder 21 and the second electric sliding rail 33 are connected with switch by conducting wire, and switch and connected by conducting wire
Connect power supply.
In use, starting driving motor makes the two broken rotation of gear 15 intermeshings, thus effectively to feed hopper 13
Interior soil block carries out primary comminution, and the soil crushing device facilitated in hack case 3 is sufficiently crushed, and has saved the plenty of time, with
After start the second electric sliding rail 33, the first electronic sliding block 2 slides in the second electric sliding rail 33 drives hack case 3 to be moved to the left,
The first electric sliding rail of subsequent start-up 7, the second electronic sliding block 6 slide in the first electric sliding rail 7, thus drive vertical supporting rod 8 to
It moves right, it is known that breaker roll 14 is located at right above hack case 3, starts motor 10, the rotation of motor 10 drives breaker roll 14 to rotate, right
Soil in broken case 3 carries out longitudinal attrition crushing, while the convex block 27 of 26 top exterior walls of pull plate setting can be effective
Crushing effect is improved, subsequent second electric telescopic rod is stretched out out of second electric expansion cylinder 21 ejects crushing rod 25, while broken
The crushing rod 25 on native 3 both sides of case can carry out again horizontal broken to the soil block being longitudinally crushed excessively with collective effect, have
Being crushed comprehensively to soil block for effect, after the completion of soil breaking, pull plate 26 is extracted out, and hack is fallen on the second sieve 19, rule
The lesser soil block of lattice can be fallen on the first sieve 18, while gravity when hack whereabouts can make metal ball 31 pass through second spring 30
It is flexible up and down to tap the first sieve 18, effectively prevent the blocking while the first sieve 18 and the second sieve of the first sieve 18
19 can effectively be sieved hack, and the experiment demand of experimenter is met.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of agricultural experiment soil crushing device, including bottom plate (1), which is characterized in that bottom plate (1) bottom outer wall passes through spiral shell
It tethers and is connected to supporting leg (35), and supporting leg (35) bottom outer wall is provided with scroll wheel (4), bottom plate (1) top exterior walls are opened
There is the first rectangular channel, and the first rectangular channel surrounding inner wall has been bolted the second electric sliding rail (33), second electricity
Dynamic sliding rail (33) top inner wall slidably connects the first electronic sliding block (2), and the first electronic sliding block (2) top exterior walls be welded with it is broken
Native case (3), hack case (3) side outer wall have been bolted support transverse slat (5), outer at the top of the support transverse slat (5)
Wall is provided with the second rectangular channel, and the second rectangular channel top exterior walls are provided with the first electric sliding rail (7), first electric sliding rail (7)
Top exterior walls slidably connect the second electronic sliding block (6), and the specification of the first electric sliding rail (7) and the second electronic sliding block (6)
Specification is adapted, and second electronic sliding block (6) top exterior walls are welded with vertical supporting rod (8), and vertical supporting rod (8) side outer wall
It has been bolted connecting rod (9), the first electricity equidistantly distributed is bolted in connecting rod (9) bottom outer wall
Dynamic retracting cylinder (11), hack case (3) two sides outer wall are plugged with the second electric expansion cylinder (21), second electric expansion
Cylinder (21) one end inner wall is plugged with the second electric telescopic rod, and second electric telescopic rod one end outer wall has been bolted first
Connecting plate (23), hack case (3) side outer wall are provided with through slot (22), and are plugged with pull plate (26), institute in through slot (22)
It states hack case (3) two sides inner wall to be provided with groove (20), and inner wall is welded with the first spring at the top and bottom of groove (20)
(28), outer wall is welded with the second connecting plate (29) at the top and bottom of first spring (28), and the second connecting plate (29) bottom
Portion's outer wall is provided with the second sieve (19), and the top and bottom outer wall of another first spring (28) is welded with third connection
Plate, and third connecting plate top exterior walls are provided with the first sieve (18), the second sieve (19) bottom outer wall is provided with equidistant
The fixed block of distribution, and fixed block bottom outer wall is welded with second spring (30), bottom plate (1) top exterior walls are connected by bolt
It is connected to support riser (16).
2. a kind of agricultural experiment soil crushing device according to claim 1, which is characterized in that the first electric expansion cylinder
(11) bottom interior wall is plugged with the first electric telescopic rod, and fixed frame has been bolted in the first electric telescopic rod bottom outer wall
(12).
3. a kind of agricultural experiment soil crushing device according to claim 2, which is characterized in that fixed frame (12) side
Outer wall has been bolted motor (10), and one end outer wall of motor (10) output shaft is welded with breaker roll (14).
4. a kind of agricultural experiment soil crushing device according to claim 1, which is characterized in that first connecting plate (23)
Side outer wall has been bolted crushing rod (25), and crushing rod (25) top and bottom outer wall is welded with and equidistantly distributes
Crushing teeth (24).
5. a kind of agricultural experiment soil crushing device according to claim 1, which is characterized in that pull plate (26) side
Handle has been bolted in outer wall, and handle outer wall is socketed with protective case.
6. a kind of agricultural experiment soil crushing device according to claim 1, which is characterized in that at the top of the pull plate (26)
Outer wall is welded with the convex block (27) equidistantly distributed, and convex block (27) cross section is semicircle.
7. a kind of agricultural experiment soil crushing device according to claim 1, which is characterized in that the second spring (30) is remote
One end outer wall from fixed block is welded with metal ball (31), and metal ball (31) outer wall is welded with steel needle (32).
8. a kind of agricultural experiment soil crushing device according to claim 1, which is characterized in that the support riser (16) one
Side outer wall is welded with fixed column, and fixed column one end outer wall has been bolted feed hopper (13), the feed hopper (13) one
Side outer wall is provided with broken gear (15).
9. a kind of agricultural experiment soil crushing device according to claim 1, which is characterized in that the support riser (16) one
Side outer wall has been bolted push rod (17), and push rod (17) is socketed with Anti-slip cover far from one end outer wall of support riser (16)
(34).
10. a kind of agricultural experiment soil crushing device according to claim 1, which is characterized in that first electric sliding rail
(7), motor (10), the first electric expansion cylinder (11), the second electric expansion cylinder (21) and the second electric sliding rail (33) are by leading
Line is connected with switch, and switch passes through wire connecting power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811457080.8A CN109529982A (en) | 2018-11-30 | 2018-11-30 | It is a kind of agricultural experiment use soil crushing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811457080.8A CN109529982A (en) | 2018-11-30 | 2018-11-30 | It is a kind of agricultural experiment use soil crushing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109529982A true CN109529982A (en) | 2019-03-29 |
Family
ID=65852507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811457080.8A Pending CN109529982A (en) | 2018-11-30 | 2018-11-30 | It is a kind of agricultural experiment use soil crushing device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109892048A (en) * | 2019-04-08 | 2019-06-18 | 银川特锐宝信息技术服务有限公司 | A kind of efficient loosening device of planting fruit trees |
| CN110420735A (en) * | 2019-08-01 | 2019-11-08 | 扬州炳星机械有限公司 | A kind of novel environment friendly pulverizer |
| CN110481020A (en) * | 2019-09-22 | 2019-11-22 | 广东麦贝科技有限公司 | A kind of convenient and fast 3D printer of dismounting |
| CN111111843A (en) * | 2019-12-28 | 2020-05-08 | 安徽省海仁材料科技有限公司 | Broken sieving mechanism of recycled concrete |
| CN112742523A (en) * | 2020-12-30 | 2021-05-04 | 安徽省文胜生物工程股份有限公司 | Lodging-resistant multi-element compound fertilizer caking loosening device and using method thereof |
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