CN213671090U - Ecological restoration device for animal husbandry - Google Patents
Ecological restoration device for animal husbandry Download PDFInfo
- Publication number
- CN213671090U CN213671090U CN202022414269.8U CN202022414269U CN213671090U CN 213671090 U CN213671090 U CN 213671090U CN 202022414269 U CN202022414269 U CN 202022414269U CN 213671090 U CN213671090 U CN 213671090U
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- Prior art keywords
- chamber
- stirring
- water
- teeter chamber
- animal husbandry
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 241001465754 Metazoa Species 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000007921 spray Substances 0.000 claims abstract description 14
- 238000005067 remediation Methods 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 70
- 239000003153 chemical reaction reagent Substances 0.000 claims description 43
- 239000007787 solid Substances 0.000 claims description 15
- 230000035939 shock Effects 0.000 claims description 8
- 238000013016 damping Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 239000002689 soil Substances 0.000 abstract description 23
- 238000004140 cleaning Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 21
- 238000010298 pulverizing process Methods 0.000 description 19
- 230000007246 mechanism Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 230000008439 repair process Effects 0.000 description 4
- 238000007790 scraping Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 239000010871 livestock manure Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000287828 Gallus gallus Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000857 drug effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
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- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Landscapes
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The utility model discloses an ecological remediation device for animal husbandry, including the teeter chamber, conveying pipeline and bottom plate, the teeter chamber is located the top surface middle part of bottom plate, the outer top middle part of teeter chamber is equipped with agitator motor a, the one end of agitator motor a output shaft extends to the inside of teeter chamber and is fixed with the back shaft through the shaft coupling, the surface of back shaft has run through the puddler along length direction equidistance level, the both ends of puddler all are fixed with the scraper blade, the one end of scraper blade all supports the inner wall in teeter chamber, the outside both sides bottom of teeter chamber is equipped with the water tank, the inside of water tank is equipped with the water pump, the water outlet end of water pump is connected with L type raceway, the other end of L type raceway is connected with the shower nozzle through E type pipe, the shower nozzle is fixed in the inner; through setting up the scraper blade for the soil bits of agitator chamber inner wall adhesion are scraped off, through set up the shower nozzle in the agitator chamber, conveniently carry out water spray cleaning to the agitator chamber inside.
Description
Technical Field
The utility model relates to an ecological remediation device especially relates to an ecological remediation device for animal husbandry.
Background
The ecological restoration is a comprehensive method for restoring polluted environment, which achieves the best effect and the lowest consumption by optimally combining various physical restoration, chemical restoration and engineering technical measures based on biological restoration under the guidance of an ecological principle. In animal husbandry, livestock often produce a large amount of excrement on the land, however, the excrement is discharged on the land, and the heavy metal content of the land is extremely high, for example, pig manure and chicken manure contain high amount of heavy metals such as copper, mercury, chromium, cadmium, lead, arsenic and the like.
However, the ecological restoration device for animal husbandry appearing on the market repairs the land with the heavy metal content exceeding the standard, the inner wall of the stirring chamber is often adhered with a large amount of heavy metal soil scraps, the heavy metal soil scraps are not easy to remove, and the inside of the stirring chamber cannot be washed, so that the excessive heavy metal soil scraps pollute the stirring chamber, and therefore the ecological restoration device for animal husbandry is provided.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of prior art, the utility model provides an ecological remediation device for animal husbandry, the scraper blade through setting up agitator motor a and driving the puddler both ends supports the motion on the inner wall of teeter chamber for the soil bits of teeter chamber inner wall adhesion are struck off, through set up the shower nozzle in the teeter chamber, conveniently spray water and wash the inside of teeter chamber, prevent a large amount of heavy metal soil bits of teeter chamber inside adhesion, cause heavy metal pollution, also avoid the inside of teeter chamber to remain too much impurity and cause the device ageing.
The utility model provides a following technical scheme: an ecological restoration device for animal husbandry, which comprises a mixing chamber, a material conveying pipe and a bottom plate, wherein the mixing chamber is positioned in the middle of the top surface of the bottom plate, a stirring motor a is arranged in the middle of the outer top end of the stirring chamber, one end of an output shaft of the stirring motor a extends into the stirring chamber and is fixed with a support shaft through a coupling, stirring rods horizontally penetrate through the surface of the supporting shaft at equal intervals along the length direction, scraping plates are fixed at both ends of each stirring rod, one end of the scraper is abutted against the inner wall of the stirring chamber, water tanks are arranged at the bottom ends of the two sides of the outer part of the stirring chamber, a water pump is arranged in the water tank, the water outlet end of the water pump is connected with an L-shaped water delivery pipe, the other end of the L-shaped water delivery pipe is connected with a spray head through an E-shaped pipe, the sprayer is fixed on the inner wall of the stirring chamber, and the water inlet end of the water pump is connected with an external water source through a water pipe.
As an optimal technical scheme of the utility model, there is rubbing crusher mechanism on one side of the outer top of teeter chamber through the conveying pipeline intercommunication, rubbing crusher mechanism is including smashing the room, outside one side of smashing the room is equipped with crushing motor an and crushing motor b from top to bottom, crushing motor a and crushing motor b's one end all extends to the inside of smashing the room and the level is fixed with first crushing roller and second respectively and smashes the roller, the other end of first crushing roller and second crushing roller all is connected with the inner wall bearing who smashes the room, the surface of first crushing roller and second crushing roller all encircles the crushing blade that is equipped with evenly distributed.
As the utility model discloses an optimized technical scheme, top one side of teeter chamber is equipped with the reagent bottle, the bottom of reagent bottle is equipped with the water conservancy diversion branch pipe that the equidistance distributes, reagent bottle and teeter chamber are linked together through the water conservancy diversion branch pipe, top one side of reagent bottle is equipped with the reagent mouth, the top threaded connection of reagent mouth has the bottle lid.
As an optimal technical scheme of the utility model, reagent bottle's outside top is equipped with agitator motor b, the one end of agitator motor b output shaft extends to reagent bottle's inside and is fixed with the (mixing) shaft, the surface of (mixing) shaft is equipped with the stirring vane that the equidistance distributes along the length direction ring.
As a preferred technical scheme of the utility model, the pan feeding mouth has been seted up on the top of smashing the room, the pan feeding mouth is the funnel type, the discharge gate has been seted up to the bottom of teeter chamber, the one side that discharge gate and teeter chamber are linked together is equipped with the solenoid valve, the other end of discharge gate extends to the outer bottom of bottom plate.
As a preferred technical scheme of the utility model, the bottom surface four corners equidistance of bottom plate is equipped with shock attenuation landing leg, shock attenuation landing leg includes solid post and hollow post, the top and the bottom plate welding of solid post, solid post is worn to locate in the inner chamber of hollow post, the outside of solid post and hollow post all is provided with damping spring.
As an optimized technical scheme of the utility model, the one end that the scraper blade is close to the teeter chamber inner wall is fixed with the rubber pad.
Compared with the prior art, the utility model discloses the beneficial effect that can reach is:
1. the stirring motor a is arranged to drive the scrapers at the two ends of the stirring rod to move in a butting mode on the inner wall of the stirring chamber, so that soil scraps adhered to the inner wall of the stirring chamber are scraped, an external water source is conveniently conveyed into the spray head through the water pump arranged in the water tank, the spray head is convenient to spray water for cleaning the interior of the stirring chamber, a large amount of heavy metal soil scraps adhered to the interior of the stirring chamber are prevented from causing heavy metal pollution, and the phenomenon that the device is aged due to excessive impurities remained in the interior of the stirring chamber is avoided;
2. through setting up first crushing roller and second and smashing the roller, can carry out multistep smashing to heavy metal soil, conveniently smash heavy metal soil to the tiny particle and be convenient for follow-up carry out soil restoration to it adds reagent for soil is by prosthetic more even thorough.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the crushing chamber of the present invention;
fig. 3 is a schematic structural view of the shock-absorbing leg of the present invention;
wherein: 1. a stirring chamber; 2. a crushing chamber; 3. a reagent bottle; 4. a feeding port; 5. a crushing motor a; 6. a crushing motor b; 7. a first crushing roller; 8. a second crushing roller; 9. a stirring motor a; 10. a reagent port; 11. a stirring motor b; 12. a stirring shaft; 13. a diversion branch pipe; 14. a delivery pipe; 15. a support shaft; 16. a stirring rod; 17. a squeegee; 18. a spray head; 19. an L-shaped water delivery pipe; 20. a water tank; 21. an electromagnetic valve; 22. a discharge port; 23. a shock-absorbing leg; 24. a base plate; 25. a solid column; 26. a hollow column.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the functions of the invention easy to understand, the invention is further explained below with reference to the specific embodiments, but the following embodiments are only the preferred embodiments of the invention, not all. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
Example (b):
as shown in fig. 1, an ecological restoration device for animal husbandry includes a mixing chamber 1, the stirring device comprises a conveying pipe 14 and a bottom plate 24, wherein a stirring chamber 1 is positioned in the middle of the top surface of the bottom plate 24, a stirring motor a9 is arranged in the middle of the outer top end of the stirring chamber 1, one end of an output shaft of a stirring motor a9 extends into the stirring chamber 1 and is fixed with a support shaft 15 through a coupler, a stirring rod 16 horizontally penetrates through the surface of the support shaft 15 at equal intervals along the length direction, two ends of the stirring rod 16 are both fixed with scraping plates 17, one end of each scraping plate 17 abuts against the inner wall of the stirring chamber 1, water tanks 20 are arranged at the bottom ends of two outer sides of the stirring chamber 1, a water pump is arranged inside each water tank 20, the water outlet end of each water pump is connected with an L-shaped water conveying pipe 19, the other end of each L-shaped water conveying pipe 19 is connected with a spray;
when the water tank is used, when heavy metal soil is stirred, the stirring motor a9 is started, the stirring motor a9 drives the supporting shaft 15 to rotate, the stirring rod 16 on the supporting shaft 15 also starts to rotate together, so that the scraping plates 17 at two ends of the stirring rod 16 abut against the inner wall of the stirring chamber 1 to rotate, after the whole repairing process is finished, the water tank 20 is started, a water pump in the water tank 20 is used for conveying an external water source to the inside of the spray head 18 through the L-shaped water pipe 19, the spray head 18 sprays water to the inside of the stirring chamber 1, the inside of the stirring chamber 1 is cleaned, and the operation is finished;
As shown in fig. 1 to 2, in another embodiment, a pulverizing mechanism is disclosed in this embodiment, the pulverizing mechanism is communicated with one side of the outer top end of the stirring chamber 1 through a conveying pipe 14, the pulverizing mechanism includes a pulverizing chamber 2, a pulverizing motor a5 and a pulverizing motor b6 are vertically arranged on one side of the outside of the pulverizing chamber 2, one ends of a pulverizing motor a5 and a pulverizing motor b6 both extend into the pulverizing chamber 2 and are respectively and horizontally fixed with a first pulverizing roller 7 and a second pulverizing roller 8, the other ends of the first pulverizing roller 7 and the second pulverizing roller 8 are both connected with an inner wall bearing of the pulverizing chamber 2, and pulverizing blades uniformly distributed are annularly arranged on the surfaces of the first pulverizing roller 7 and the second pulverizing roller 8;
when the heavy metal soil crushing device is used, the crushing motor a5 and the crushing motor b6 are started to drive the crushing blades on the first crushing roller 7 and the second crushing roller 8 to crush the heavy metal soil in the crushing chamber 2 in sequence, and the operation is finished;
through setting up first crushing roller 7 and second crushing roller 8, can carry out multistep smashing to heavy metal soil, conveniently smash heavy metal soil to the tiny particle and be convenient for follow-up carry out soil restoration to its additive reagent for soil is by prosthetic more even thorough.
As shown in fig. 1, in another embodiment, a reagent bottle 3 is disclosed in this embodiment, the reagent bottle 3 is disposed on one side of the top end of a stirring chamber 1, flow guiding branch pipes 13 are disposed at the bottom of the reagent bottle 3 and are distributed at equal intervals, the reagent bottle 3 is communicated with the stirring chamber 1 through the flow guiding branch pipes 13, a reagent port 10 is disposed on one side of the top end of the reagent bottle 3, and a bottle cap is connected to the top end of the reagent port 10 by a thread;
set up reagent bottle 3, be convenient for add the restoration reagent in 3 reagent bottles into the teeter chamber 1 through water conservancy diversion branch pipe 13, threaded connection bottle lid on reagent mouth 10 is convenient for through adding reagent and sealed reagent bottle 3 in screwing down and screwing up the reagent bottle 3 to the bottle lid.
As shown in fig. 1, in another embodiment, the present embodiment discloses a method for stirring a reagent in a reagent bottle 3, wherein a stirring motor b11 is disposed at the top end of the exterior of the reagent bottle 3, one end of an output shaft of the stirring motor b11 extends into the reagent bottle 3 and is fixed with a stirring shaft 12, and stirring blades are circumferentially disposed on the surface of the stirring shaft 12 at equal intervals along the length direction;
drive the repair reagent of stirring on the shaft 12 through setting up agitator motor b11 and stir to the reagent bottle 3 in, be convenient for with the more even of repair reagent stirring, prevent to precipitate for the better of repair reagent's drug effect performance, with the more even of heavy metal soil reaction.
As shown in fig. 1-2, in another embodiment, this embodiment discloses a feeding and discharging manner of the apparatus, a feeding port 4 is formed at the top end of the pulverizing chamber 2, the feeding port 4 is funnel-shaped, a discharging port 22 is formed at the bottom end of the stirring chamber 1, an electromagnetic valve 21 is disposed on a surface of the discharging port 22 communicated with the stirring chamber 1, and the other end of the discharging port 22 extends to the outer bottom end of the bottom plate 24;
through setting pan feeding mouth 4 to the funnel type, increased the surface area of pan feeding mouth 4, be convenient for empty heavy metal soil into crushing room 2 in, through set up solenoid valve 21 in the one end of discharge gate 22, be convenient for control the ejection of compact at any time.
As shown in fig. 1 and 3, in another embodiment, the embodiment discloses a shock absorption leg 23, the shock absorption leg 23 is equidistantly arranged at four corners of the bottom surface of a bottom plate 24, the shock absorption leg 23 comprises a solid column 25 and a hollow column 26, the top end of the solid column 25 is welded with the bottom plate 24, the solid column 25 is arranged in the inner cavity of the hollow column 26 in a penetrating manner, and shock absorption springs are arranged outside the solid column 25 and the hollow column 26;
when the device shakes, the hollow column 26 slides on the solid column 25, and the springs outside the hollow column 26 and the solid column 25 deform, so that the shaking force applied to the device is buffered, the running stability of the device is improved, and the mechanical wear degree of the device caused by shaking is reduced.
As shown in FIG. 1, in another embodiment, the embodiment discloses a rubber pad, and a rubber pad is fixed at one end of the scraper 17 close to the inner wall of the stirring chamber 1; the service life of the device is prolonged, the inner wall of the stirring chamber 1 is prevented from being scratched by the scraper 17, and excessive abrasion of the scraper 17 is also avoided.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides an ecological remediation device for animal husbandry, includes teeter chamber (1), conveying pipeline (14) and bottom plate (24), teeter chamber (1) is located the top surface middle part of bottom plate (24), its characterized in that: a stirring motor a (9) is arranged in the middle of the outer top end of the stirring chamber (1), one end of an output shaft of the stirring motor a (9) extends into the stirring chamber (1) and is fixed with a support shaft (15) through a coupler, stirring rods (16) are horizontally penetrated through the surface of the supporting shaft (15) at equal intervals along the length direction, both ends of the stirring rod (16) are fixed with scrapers (17), one end of each scraper (17) is abutted against the inner wall of the stirring chamber (1), the bottom ends of the two sides of the outer part of the stirring chamber (1) are provided with water tanks (20), the water tanks (20) are internally provided with water pumps, the water outlet end of the water pump is connected with an L-shaped water delivery pipe (19), the other end of the L-shaped water delivery pipe (19) is connected with a spray head (18) through an E-shaped pipe, the spray head (18) is fixed on the inner wall of the stirring chamber (1), and the water inlet end of the water pump is connected with an external water source through a water pipe.
2. An ecological restoration device for animal husbandry according to claim 1, characterized in that: the outer top one side of teeter chamber (1) has rubbing crusher to construct through conveying pipeline (14) intercommunication, rubbing crusher constructs including smashing room (2), the outside one side of smashing room (2) is equipped with crushing motor a (5) and crushing motor b (6) from top to bottom, the one end of crushing motor a (5) and crushing motor b (6) all extends to the inside of smashing room (2) and is fixed with first crushing roller (7) and second crushing roller (8) respectively the level, the other end of first crushing roller (7) and second crushing roller (8) all with the inner wall bearing of smashing room (2) be connected, the surface of first crushing roller (7) and second crushing roller (8) all encircles the crushing blade that is equipped with evenly distributed.
3. An ecological restoration device for animal husbandry according to claim 1, characterized in that: top one side of teeter chamber (1) is equipped with reagent bottle (3), the bottom of reagent bottle (3) is equipped with water conservancy diversion branch pipe (13) that the equidistance distributes, reagent bottle (3) and teeter chamber (1) are linked together through water conservancy diversion branch pipe (13), top one side of reagent bottle (3) is equipped with reagent mouth (10), the top threaded connection of reagent mouth (10) has the bottle lid.
4. An ecological restoration device for animal husbandry according to claim 3, characterized in that: the outside top of reagent bottle (3) is equipped with agitator motor b (11), the one end of agitator motor b (11) output shaft extends to the inside of reagent bottle (3) and is fixed with (mixing) shaft (12), the surface of (mixing) shaft (12) is equipped with the stirring vane that the equidistance distributes along the length direction ring.
5. An ecological restoration device for animal husbandry according to claim 2, characterized in that: smashing the top of room (2) and having seted up pan feeding mouth (4), pan feeding mouth (4) are the funnel type, discharge gate (22) have been seted up to the bottom of teeter chamber (1), the one side that discharge gate (22) and teeter chamber (1) are linked together is equipped with solenoid valve (21), the other end of discharge gate (22) extends to the outer bottom of bottom plate (24).
6. An ecological restoration device for animal husbandry according to claim 1, characterized in that: the bottom surface four corners equidistance of bottom plate (24) is equipped with shock attenuation landing leg (23), shock attenuation landing leg (23) are including solid post (25) and hollow post (26), the top and bottom plate (24) welding of solid post (25), solid post (25) are worn to locate in the inner chamber of hollow post (26), the outside of solid post (25) and hollow post (26) all is provided with damping spring.
7. An ecological restoration device for animal husbandry according to claim 1, characterized in that: and a rubber pad is fixed at one end of the scraper (17) close to the inner wall of the stirring chamber (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022414269.8U CN213671090U (en) | 2020-10-27 | 2020-10-27 | Ecological restoration device for animal husbandry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022414269.8U CN213671090U (en) | 2020-10-27 | 2020-10-27 | Ecological restoration device for animal husbandry |
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| Publication Number | Publication Date |
|---|---|
| CN213671090U true CN213671090U (en) | 2021-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022414269.8U Expired - Fee Related CN213671090U (en) | 2020-10-27 | 2020-10-27 | Ecological restoration device for animal husbandry |
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| Country | Link |
|---|---|
| CN (1) | CN213671090U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113698156A (en) * | 2021-10-12 | 2021-11-26 | 北京工业大学 | Road base material and preparation method thereof |
-
2020
- 2020-10-27 CN CN202022414269.8U patent/CN213671090U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113698156A (en) * | 2021-10-12 | 2021-11-26 | 北京工业大学 | Road base material and preparation method thereof |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210713 |