CN210765604U - Seed cotton cleaning device - Google Patents
Seed cotton cleaning device Download PDFInfo
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- CN210765604U CN210765604U CN201921535494.8U CN201921535494U CN210765604U CN 210765604 U CN210765604 U CN 210765604U CN 201921535494 U CN201921535494 U CN 201921535494U CN 210765604 U CN210765604 U CN 210765604U
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- seed cotton
- conveying member
- annular conveying
- mulching film
- electric conductor
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Abstract
The utility model provides a unginned cotton cleaning device belongs to agricultural machine technical field, including box, annular conveying piece, electrostatic generator and electric conductor. The box body is respectively provided with a feed inlet and a discharge outlet; the annular conveying member is arranged on the box body and positioned on one side of the feeding hole and used for conveying the seed cotton to the discharging hole; the electrostatic generator is arranged above the annular conveying member, an electrostatic environment is formed between the electrostatic generator and the annular conveying member, and the mulching film is charged and adsorbed on the annular conveying member when passing through the electrostatic environment; the electric conductor is arranged below the annular conveying member and is in contact with the mulching film adsorbed on the annular conveying member; one end of the conductor is grounded and used for neutralizing static electricity on the mulching film. The seed cotton cleaning device provided by the utility model has the advantages of simple structure, convenient operation, continuous operation, no need of stopping to clean the mulching film and improved working efficiency; the seed cotton and the mulching film are separated by adopting an electrostatic adsorption principle, so that the cleaning effect is optimized.
Description
Technical Field
The utility model belongs to the technical field of agricultural machine, more specifically say, relate to a unginned cotton cleaning device.
Background
At present, seed cotton contains a large amount of plastic mulching films due to cotton planting and picking modes in China, the plastic mulching films are rolled into smaller fragments after multistage cleaning of a production line and are mixed with cotton fibers, and the small fragments are difficult to clean. The traditional seed cotton cleaning device cannot thoroughly clean the mulching film in the seed cotton, and is low in working efficiency and poor in cleaning effect.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a seed cotton cleaning device aims at solving the plastic film that current seed cotton cleaning device can not thoroughly clear up in the seed cotton, and work efficiency is low, clears up the poor problem of effect.
In order to achieve the above object, the utility model adopts the following technical scheme: provided is a seed cotton cleaning device, including:
the box body is respectively provided with a feed inlet and a discharge outlet;
the annular conveying piece is arranged on the box body and positioned on one side of the feeding hole and used for conveying the seed cotton to the discharging hole;
the electrostatic generator is positioned above the annular conveying member, an electrostatic environment is formed between the electrostatic generator and the annular conveying member, and the mulching film is charged and adsorbed on the annular conveying member when passing through the electrostatic environment; and
the electric conductor is positioned below the annular conveying piece and is in contact with the mulching film adsorbed on the annular conveying piece; one end of the conductor is grounded and used for neutralizing static electricity on the mulching film;
the mulching film is electrostatically adsorbed on the annular conveying member by virtue of the electrostatic generator, so that the mulching film is separated from the seed cotton; the electric conductor neutralizes static electricity on the mulching film to enable the mulching film to be in a power-off state, and therefore the mulching film is separated from the annular conveying piece.
As another embodiment of the present application, the conductive body is a cylinder, and a side surface of the conductive body abuts against a bottom of the annular transmission member.
As another embodiment of the application, the electric conductor is perpendicular to the conveying direction of the annular conveying member and is rotatably arranged on the box body.
As another embodiment of the present application, a driving mechanism for driving the conductor to move in the vertical direction is disposed on the box body.
As another embodiment of the present application, the driving mechanism includes:
the supporting shaft is arranged on the box body in a sliding mode, and the electric conductor is sleeved on the supporting shaft and has a degree of freedom rotating around the axis of the electric conductor;
the screw rod is rotatably arranged at the end part of the supporting shaft, the axial direction of the screw rod is parallel to the vertical direction, and the supporting shaft is provided with a threaded hole matched with the screw rod;
the worm gear is fixedly arranged at one end of the lead screw, which is far away from the supporting shaft; and
and the worm is rotatably arranged on the box body and is in transmission fit with the worm wheel.
As another embodiment of the application, the seed cotton cleaning device further comprises a second driving roller, the second driving roller is located above the annular conveying member, and a conveying channel for seed cotton to pass through is formed between the second driving roller and the annular conveying member.
As another embodiment of the present application, the second driving roller is made of an insulating material.
As another embodiment of this application, a seed cotton cleaning device still includes opens the mechanism, open the mechanism and be located the feed inlet with between the annular conveying member for open the seed cotton.
As another embodiment of the application, the seed cotton cleaning device further comprises a cotton flowing plate and a impurity containing hopper; the cotton dripping plate is positioned between the annular conveying member and the discharge hole and is used for conveying the separated seed cotton to the next procedure; the impurity containing hopper is positioned below the electric conductor and used for containing mulching films.
As another embodiment of the present application, the annular transmission member is made of an insulating material.
The utility model provides a pair of unginned cotton cleaning device's beneficial effect lies in: compared with the prior art, the utility model relates to a seed cotton cleaning device utilizes annular conveying member to transmit seed cotton and plastic film, when seed cotton and plastic film through the electrostatic generator that is located annular conveying member top, because the chemical characteristic of seed cotton and plastic film is different, the plastic film takes static and adsorbs on annular conveying member, and the seed cotton does not take static, the seed cotton breaks away from with annular conveying member behind the discharge end of annular conveying member, and then realized the separation of seed cotton and plastic film, reached and carried out the purpose of clearing up to the seed cotton. After the plastic film adsorbed on the annular conveying member is separated from the seed cotton, when the plastic film passes through the electric conductor positioned below the annular conveying member, the static electricity on the plastic film is introduced into the ground by the electric conductor, so that the plastic film loses the static electricity, and the plastic film is separated from the annular conveying member by the gravity of the plastic film. The device has simple structure and convenient operation, can realize continuous operation, does not need to stop to clean the mulching film, and improves the working efficiency; the seed cotton and the mulching film are separated by adopting an electrostatic adsorption principle, so that the cleaning effect is optimized, and the quality of the seed cotton is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of a seed cotton cleaning device provided by an embodiment of the present invention;
FIG. 2 is a perspective view of a seed cotton cleaning device provided by an embodiment of the present invention;
fig. 3 is a cross-sectional view of a driving mechanism provided in an embodiment of the present invention;
fig. 4 is a sectional view taken along line a-a of fig. 3.
In the figure: 1. a box body; 101. a feed inlet; 102. a discharge port; 103. seed cotton; 104. mulching films; 201. an annular transfer member; 202. a first driving roller; 203. a second driving roller; 3. an electrostatic generator; 4. an electrical conductor; 5. a impurity containing hopper; 6. an opening mechanism; 601. a first stirring roller; 602. a second stirring roller; 7. a cotton dropping plate; 8. a drive mechanism; 801. a support shaft; 802. a lead screw; 803. a worm gear; 804. a worm; 805. a handle; 806. a chute; 807. a clamp spring; 9. a crushing roller.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and fig. 2 together, a seed cotton cleaning device according to the present invention will now be described. The seed cotton cleaning device comprises a box body 1, an annular conveying member 201, an electrostatic generator 3 and an electric conductor 4. The box body 1 is respectively provided with a feed inlet 101 and a discharge outlet 102; the annular conveying member 201 is arranged on the box body 1 and positioned on one side of the feed port 101 and is used for conveying the seed cotton 103 to the discharge port 102; the electrostatic generator 3 is arranged above the annular conveying member 201, an electrostatic environment is formed between the electrostatic generator 3 and the annular conveying member 201, and the mulching film 104 is charged and adsorbed on the annular conveying member 201 when passing through the electrostatic environment; the electric conductor 4 is arranged below the annular conveying member 201 and is contacted with the mulching film 104 adsorbed on the annular conveying member 201; one end of the electric conductor 4 is grounded and used for neutralizing static electricity on the mulching film 104; the mulching film 104 is electrostatically adsorbed on the annular conveying member 201 by the electrostatic generator 3, so that the seed cotton 103 is separated from the mulching film 104; the electric conductor 4 neutralizes static electricity on the mulching film 104, so that the mulching film 104 is in a power-off state, and the mulching film 104 is separated from the annular conveying member 201.
The utility model provides a pair of seed cotton cleaning device, compared with the prior art, utilize annular conveying member 201 to transmit seed cotton 103 and plastic film 104, when seed cotton 103 and plastic film 104 through the electrostatic generator 3 that is located annular conveying member 201 top, because seed cotton 103 and plastic film 104's chemical characteristic are different, plastic film 104 takes the static and adsorbs on annular conveying member 201, and seed cotton 103 does not take the static, seed cotton 103 breaks away from with annular conveying member 201 behind the discharge end of annular conveying member 201, and then realized the separation of seed cotton 103 and plastic film 104, reached the purpose of clearing up seed cotton 103; after the mulching film 104 adsorbed on the annular conveying member 201 is separated from the seed cotton 103, when the mulching film 104 passes through the electric conductor 4 positioned below the annular conveying member 201, static electricity on the mulching film 104 is introduced into the ground by the electric conductor 4, so that the mulching film 104 loses the static electricity, and the mulching film 104 is separated from the annular conveying member 201 by means of self gravity. The device has simple structure and convenient operation, can realize continuous operation, does not need to be stopped to clean the mulching film 104, and improves the working efficiency; the seed cotton 103 and the mulching film 104 are separated by adopting an electrostatic adsorption principle, so that the cleaning effect is optimized, and the quality of the seed cotton 103 is improved.
In this embodiment, the annular conveying member 201 is at a certain angle with the horizontal direction, and the annular conveying member 201 inclines downwards along the direction far away from the feed inlet 101, so that the conveying efficiency of the seed cotton 103 is improved. By way of example, the angle of inclination may be from 5 ° to 10 °. A first driving roller 202 and a driven roller are rotatably mounted on the housing 1. A first driving roller 202 is positioned at one end of the annular conveying member 201 and close to the feeding port 101 and is used for driving the annular conveying member 201 to move; the driven roller is located at the other end of the endless conveyor 201. The first driving roller 202 is driven by a motor. The position of the driven roller can be adjusted, and the driven roller is used for adjusting the tightness of the annular transmission part. The mounting hole of the driven roller is an oblong hole, the driven roller can move along the oblong hole, and after the position of the driven roller is determined, the driven roller is fastened by a locking nut. The static generator 3 generates adjustable voltage, a static environment is formed in a certain range by emitting negative ions, the static generator 3 is installed on the box body 1 and keeps a proper distance from the annular conveying member 201, and the mulching film 104 on the upper surface of the annular conveying member 201 can be charged with static electricity when passing through the static area.
As a specific embodiment of the seed cotton cleaning device provided by the present invention, please refer to fig. 1 and 2, the electric conductor 4 is a cylinder, and the side of the electric conductor 4 is supported against the bottom of the annular conveying member 201. The electric conductor 4 can be made of 45 steel directly, the 45 steel is widely applied in the mechanical field, the electric conductor has good processing performance and electric conductivity, parts are easy to obtain, and the production cost can be effectively reduced; because there is certain friction between electric conductor 4 and the annular conveying piece 201, after transferring 45 steel to the processing, can effectively improve 45 steel surface's wearability, prolong electric conductor 4's life. Other materials with electric conductivity such as copper alloy can be adopted, and the copper alloy has good electric conductivity, thermal conductivity and corrosion resistance and can adapt to a complex working environment. The electric conductor 4 adopts a cylindrical structure and can be directly machined by a lathe, so that the machining difficulty and the machining cost are reduced. The side surface of the electric conductor 4 is abutted against the bottom of the annular conveying member 201, so that the electric conductor 4 can be ensured to be in good contact with the mulching film 104 moving along with the annular conveying member 201, and the static electricity on the mulching film 104 is smoothly led into the ground, so that the mulching film 104 is separated from the annular conveying member 201 due to power loss.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 and fig. 2, the electric conductor 4 is perpendicular to the conveying direction of the annular conveying member 201, and is rotatably disposed on the box body 1. The length dimension of electric conductor 4 is greater than the width dimension of annular conveying member 201, guarantees that electric conductor 4 can cover the plastic film 104 that removes to predetermineeing the station completely, further improves the clearance effect to plastic film 104. The above-mentioned predetermined station is the position where the electrical conductor 4 is in contact with the endless conveyor 201. Electric conductor 4 is under the effect of annular conveying member 201's frictional force, rotate along with annular conveying member 201 is synchronous, the plastic film 104 can pass through between electric conductor 4 and the annular conveying member 201, make electric conductor 4 and plastic film 104 carry out abundant contact, guarantee that the static on the plastic film 104 is drawn away by electric conductor 4 completely, finally make plastic film 104 be in the complete body of losing after electric conductor 4, realize that plastic film 104 through electric conductor 4 breaks away from annular conveying member 201 smoothly and collects the mesh of flourishing miscellaneous fill 5, prevent the accumulational phenomenon of plastic film 104 before electric conductor 4 simultaneously.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 3, a driving mechanism 8 for driving the electric conductor 4 to move along the vertical direction is disposed on the box body 1. Because the sizes of the mulching films 104 in different seed cottons 103 are different, the thicknesses of the mulching films 104 adsorbed on the annular conveying member 201 are also different, and the driving mechanism 8 can be used for adjusting the position relation between the electric conductor 4 and the annular conveying member 201 at any time, so that the working state of the electric conductor 4 is optimal, and meanwhile, the tightness of the annular conveying member 201 can be adjusted. It should be noted that: the moving direction of the conductive body 4 is not limited to the vertical direction as long as the conductive body 4 can be moved closer to or farther from the endless transferring member 201.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 3 and fig. 4, the driving mechanism 8 includes: a support shaft 801, a lead screw 802, a worm wheel 803, and a worm 804. The supporting shaft 801 is arranged on the box body 1 in a sliding mode, and the electric conductor 4 is sleeved on the supporting shaft 801 and has a degree of freedom rotating around the axis of the electric conductor 4; the lead screw 802 is rotatably arranged at the end part of the support shaft 801, the axial direction of the lead screw 802 is parallel to the vertical direction, and the support shaft 801 is provided with a threaded hole matched with the lead screw 802; a worm wheel 803 is fixedly arranged at one end of the lead screw 802 far away from the supporting shaft 801; the worm 804 is rotatably disposed on the box 1 and is in transmission fit with the worm wheel 803. The box body 1 is provided with a sliding groove 806 which is in sliding fit with the supporting shaft 801. The support shaft 801 is provided with a clamp spring 807 for limiting the axial movement of the conductor 4 along the conductor 4. The number of the clamp springs 807 is two, the clamp springs are respectively located on two sides of the conductor 4, and the support shaft 801 is provided with an installation groove for installing the clamp springs 807. The worm wheel 803 and the worm 804 drive the screw rod to rotate around the shaft, so as to drive the supporting shaft 801 and the electric conductor 4 to move along the vertical direction, and the electric conductor 4 is close to or far away from the annular conveying piece 201. The transmission form of the worm wheel 803 and the worm 804 is adopted, so that the self-locking limit of the electric conductor 4 is realized, the position movement of the electric conductor 4 caused by the action of external force is prevented, and the stability of the electric conductor 4 is enhanced. A handle 805 is fixedly installed at the end of the worm 804, and an operator drives the worm 804 to rotate around the shaft by means of the handle 805, so that the operation of the operator is facilitated.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1, the seed cotton cleaning device further includes a second driving roller 203, the second driving roller 203 is located above the annular conveying member 201, and a transmission channel for passing the seed cotton 103 is formed between the second driving roller 203 and the annular conveying member 201. The second driving roller 203 is matched with the annular conveying member 201 and is used for driving the seed cotton 103 to move forwards. The seed cotton 103 is thinned and spread on the endless conveyor 201 by the second driving roller 203, preventing the seed cotton 103 from accumulating on the feed end of the endless conveyor 201. The second driving roller 203 is located on the side of the electrostatic generator 3 near the feed end of the endless conveyor 201.
As a specific implementation of the embodiment of the utility model provides a second drive roller 203 adopts insulating material, prevents that second drive roller 203 from adsorbing the static that electrostatic generator 3 launches to reduce the electrostatic strength among the electrostatic environment.
As a specific implementation manner of the embodiment of the utility model, please refer to fig. 1, seed cotton cleaning device is still including opening mechanism 6, opens mechanism 6 and is located between feed inlet 101 and the annular conveying piece 201 for open seed cotton 103. The feed inlet 101 is opened in the top of box 1, the opening mechanism 6 is located the below of feed inlet 101, opening mechanism 6 includes first stirring roller 601 and second stirring roller 602, first stirring roller 601 and second stirring roller 602 all rotate and install on box 1, first stirring roller 601 and second stirring roller 602 parallel arrangement just revolve to opposite, first stirring roller 601 is located the one side that is close to annular conveying member 201, the height of first stirring roller 601 is higher than the height of second stirring roller 602, be favorable to seed cotton 103 to carry out intensive mixing between first stirring roller 601 and second stirring roller 602. Most of mulching films 104 in the seed cotton 103 conveyed to the annular conveying member 201 after being loosened by the first stirring roller 601 and the second stirring roller 602 are attached to the bottom of the seed cotton 103, and meanwhile, the loosened seed cotton 103 is extruded by the second driving roller 203, so that the contact area between the mulching films 104 and the annular conveying member 201 is increased, and the mulching films 104 are favorably adsorbed on the annular conveying member 201 after being electrified. Two crushing rollers 9 are arranged at the feed inlet 101, and the two crushing rollers 9 are arranged in parallel and have opposite rotation directions and are used for crushing the mulching film 104 in the seed cotton 103. The crushing roller 9 crushes the mulching film 104 with a larger size in the seed cotton 103, so that the mulching film 104 finally enters the opening mechanism 6 with the size. The first stirring roller 601, the second stirring roller 602, and the crushing roller 9 are driven to rotate about the shafts by a motor.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 and 2, the seed cotton cleaning device further includes a cotton dropping plate 7 and a trash holding hopper 5, the cotton dropping plate 7 is located between the annular conveying member 201 and the discharge port 102, and is used for conveying the separated seed cotton 103 to the next process. The cotton dropping plate 7 is obliquely fixed on the box body 1. One end of the cotton dripping plate 7 is positioned below the discharge end of the annular conveying part 201, and the other end of the cotton dripping plate extends to the next procedure through the discharge port 102, so that the cleaned seed cotton 103 is conveniently conveyed to the next procedure, and the production automation is facilitated. The impurity containing hopper 5 is positioned below the electric conductor 4 and is used for containing the mulching film 104; the mulching film 104 separated from the annular conveying member 201 falls into the impurity containing hopper 5 by the gravity of the operator, and the operator can clean the mulching film 104 in the impurity containing hopper 5 regularly.
As a specific implementation mode of the embodiment of the utility model, the surface of the cotton dropping plate 7 is provided with the reticulate pattern plate. The reticulation board is welded and fixed on the upper surface of the cotton dripping board 7, so that the frictional resistance between the seed cotton 103 and the cotton dripping board 7 is reduced, the seed cotton 103 can smoothly pass through the cotton dripping board 7, and the phenomenon that the seed cotton 103 is accumulated on the cotton dripping board 7 is prevented.
As a specific implementation manner of the embodiment of the present invention, the annular conveying member 201 is made of an insulating material. By way of example, the endless conveying member 201 may be a belt, which is beneficial for attracting the mulching film 104 in a charged state, and the belt is an insulator and does not affect static electricity on the mulching film 104.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A seed cotton cleaning device is characterized by comprising:
the box body is respectively provided with a feed inlet and a discharge outlet;
the annular conveying piece is arranged on the box body and positioned on one side of the feeding hole and used for conveying the seed cotton to the discharging hole;
the electrostatic generator is positioned above the annular conveying member, an electrostatic environment is formed between the electrostatic generator and the annular conveying member, and the mulching film is charged and adsorbed on the annular conveying member when passing through the electrostatic environment; and
the electric conductor is positioned below the annular conveying piece and is in contact with the mulching film adsorbed on the annular conveying piece; one end of the conductor is grounded and used for neutralizing static electricity on the mulching film;
the mulching film is electrostatically adsorbed on the annular conveying member by virtue of the electrostatic generator, so that the mulching film is separated from the seed cotton; the electric conductor neutralizes static electricity on the mulching film to enable the mulching film to be in a power-off state, and therefore the mulching film is separated from the annular conveying piece.
2. The seed cotton cleaning apparatus of claim 1, wherein the electrical conductor is a cylinder, and the side surface of the electrical conductor abuts against the bottom of the annular conveying member.
3. The seed cotton cleaning apparatus of claim 2, wherein the electrical conductor is perpendicular to a conveying direction of the endless conveying member and is rotatably disposed on the housing.
4. The seed cotton cleaning apparatus as claimed in claim 2 or 3, wherein a driving mechanism for driving the electric conductor to move in a vertical direction is provided on the case.
5. The seed cotton cleaning apparatus of claim 4, wherein the drive mechanism comprises:
the supporting shaft is arranged on the box body in a sliding mode, and the electric conductor is sleeved on the supporting shaft and has a degree of freedom rotating around the axis of the electric conductor;
the screw rod is rotatably arranged at the end part of the supporting shaft, the axial direction of the screw rod is parallel to the vertical direction, and the supporting shaft is provided with a threaded hole matched with the screw rod;
the worm gear is fixedly arranged at one end of the lead screw, which is far away from the supporting shaft; and
and the worm is rotatably arranged on the box body and is in transmission fit with the worm wheel.
6. The seed cotton cleaning apparatus according to claim 1, further comprising a second driving roller, said second driving roller being positioned above said endless conveying member, said second driving roller and said endless conveying member forming a transport passage therebetween for seed cotton to pass therethrough.
7. The seed cotton cleaning apparatus according to claim 6, wherein said second driving roller is made of an insulating material.
8. The seed cotton cleaning apparatus of claim 1, further comprising an opening mechanism located between the feed inlet and the annular conveyor for opening seed cotton.
9. The seed cotton cleaning device of claim 1, further comprising a cotton dripping plate and a trash holding bucket; the cotton dripping plate is positioned between the annular conveying member and the discharge hole and is used for conveying the separated seed cotton to the next procedure; the impurity containing hopper is positioned below the electric conductor and used for containing mulching films.
10. The seed cotton cleaning apparatus of claim 1, wherein the annular conveying member is made of an insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921535494.8U CN210765604U (en) | 2019-09-16 | 2019-09-16 | Seed cotton cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921535494.8U CN210765604U (en) | 2019-09-16 | 2019-09-16 | Seed cotton cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210765604U true CN210765604U (en) | 2020-06-16 |
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ID=71037574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921535494.8U Active CN210765604U (en) | 2019-09-16 | 2019-09-16 | Seed cotton cleaning device |
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| Country | Link |
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| CN (1) | CN210765604U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114026981A (en) * | 2021-12-15 | 2022-02-11 | 清华大学 | Residual mulching film recovery device on soil surface layer |
-
2019
- 2019-09-16 CN CN201921535494.8U patent/CN210765604U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114026981A (en) * | 2021-12-15 | 2022-02-11 | 清华大学 | Residual mulching film recovery device on soil surface layer |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220301 Address after: 056046 No. 8, Xinxing street, high tech Industrial Development Zone, Handan City, Hebei Province Patentee after: Handan runmian Machinery Manufacturing Co.,Ltd. Address before: 056046 No. 8, Xinxing street, Matou Economic Development Zone, Jinan new area, Handan City, Hebei Province Patentee before: HANDAN GOLDENLION COTTON MACHINERY CO.,LTD. |
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