CN214962169U - Dedicated all-round pesticide of sick worm control of maize spills device - Google Patents

Dedicated all-round pesticide of sick worm control of maize spills device Download PDF

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Publication number
CN214962169U
CN214962169U CN202121309611.6U CN202121309611U CN214962169U CN 214962169 U CN214962169 U CN 214962169U CN 202121309611 U CN202121309611 U CN 202121309611U CN 214962169 U CN214962169 U CN 214962169U
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fixedly connected
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bearing
gear
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陈振安
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Abstract

The utility model discloses a dedicated all-round pesticide of maize sick worm prevention and cure spills device, including the loading board, the utility model discloses when using, through the motor, the worm wheel, the worm, first conical gear, second conical gear, the bull stick, the carousel, the fixed axle, the rectangular channel, L shape pole, the fly leaf, the shower nozzle, a water pump, the drinking-water pipe, mutually support between outlet pipe and the hose passes through the back-and-forth movement of shower nozzle, the range of spraying of shower nozzle has been increased, thereby working area has been increased, work efficiency is improved, through the transmission shaft, the swinging plate, the connecting rod, the push pedal, the hand wheel, the loose gear, mutually support between spacing gear and the pull ring can highly adjust the shower nozzle, thereby can carry out the pesticide to maize plant seedling of co-altitude not spray, the prevention and cure effect has been strengthened.

Description

Dedicated all-round pesticide of sick worm control of maize spills device
Technical Field
The utility model relates to a pesticide sprays technical field, especially relates to a dedicated all-round pesticide of maize sick worm prevention and cure spills device.
Background
At present, corn is an annual male and female same-plant cross-pollinated plant, has tall and big plants and strong stems, is an important grain crop and feed crop, is also a crop with the highest total yield all over the world, is always known as a long-life food, contains rich protein, fat, vitamins, trace elements, cellulose and the like, has great potential for developing high-nutrition and high-biological-function food, but needs to control insect pests during planting, thereby facilitating the healthy growth of the corn.
The existing pesticide spraying device for preventing and treating the corn diseases and insect pests has a small spraying range, so that the working efficiency of the device is low, and when the device is used for spraying, pesticide spraying on corn seedlings with high plant heights cannot be carried out due to the fact that the height of a spraying head cannot be adjusted, and the preventing and treating effect is influenced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a dedicated all-round pesticide spraying device for preventing and controlling corn diseases and pests.
The utility model discloses an one of the purpose adopts following technical scheme to realize:
the omnibearing pesticide spraying device special for preventing and controlling corn diseases and pests comprises a bearing plate, wherein a baffle is fixedly connected to the left side of the bearing plate, two handles are fixedly connected to the left side of the baffle close to the top and are arranged in the front and back directions, a rolling mechanism is arranged at the bottom of the bearing plate, a box body is fixedly connected to the middle position of the top of the bearing plate, a pesticide inlet pipe is inserted into the position of the top of the box body close to the left side, a support is fixedly connected to the top of the box body, a motor is fixedly connected to the top of the support, a worm wheel is fixedly connected to the power output end of the motor and is positioned at the bottom of the support, a stirring mechanism is arranged in an inner cavity of the box body, a side plate is arranged on the right side of the box body, the bottom of the side plate is fixedly connected with the bearing plate, a spraying mechanism is arranged on the right side of the side plate, a storage battery is arranged on the left side of the box body, and the bottom of the storage battery is fixedly connected with the bearing plate.
Further, the rolling mechanism includes a plurality of riser, a plurality of the riser is fixed connection respectively and is close to four corners department in the bottom of loading board, a plurality of one side that the riser is close to loading board bottom center all is equipped with the gyro wheel, be equipped with the loose axle between riser and the gyro wheel, just the both ends of loose axle respectively with adjacent riser and gyro wheel swing joint.
Further, rabbling mechanism includes the pivot, just pivot fixed connection is in the bottom of worm wheel, the first bearing of top intermediate position department fixedly connected with of box, first bearing is run through to the bottom of pivot, extends to the inner chamber of box to a plurality of fixedly connected with stirring leaf.
Further, the spraying mechanism includes the fly leaf, just the right side that the fly leaf is located the curb plate is close to top department, the right side of fly leaf is close to top department and is equipped with the push pedal, the first slider of left side fixedly connected with of push pedal, the right side of fly leaf is close to top department and has seted up first spout, first slider swing joint is in first spout inner chamber, the right side fixedly connected with shower nozzle of push pedal.
Further, the right side of box is equipped with the water pump, it has the drinking-water pipe to peg graft in the left side of water pump, just the right side that the box was run through to the drinking-water pipe left end to extend to the inner chamber of box, it has the outlet pipe to peg graft on the right side of water pump, just the outlet pipe right-hand member runs through the curb plate, and fixedly connected with hose, the curb plate right side is close to the first diaphragm of bottom fixedly connected with, just the through-hole has been seted up on the first diaphragm, the one end that the outlet pipe was kept away from to the hose runs through the through-hole to with shower nozzle fixed connection.
Further, a worm is meshed with the front side of the worm wheel, a fixed plate is fixedly connected to the position, close to the right side, of the top of the box body, a second bearing is fixedly connected to the fixed plate, a third bearing is fixedly connected to the position, close to the top, of the left side of the side plate, a right end of the worm penetrates through the second bearing and is inserted into an inner cavity of the third bearing, a first conical gear is sleeved on the position, close to the right end, of the outer side of the worm, a second conical gear is meshed with the bottom of the first conical gear, a second transverse plate is arranged at the bottom of the second conical gear, the right side of the second transverse plate is fixedly connected with the side plate, a fourth bearing is fixedly connected to the position, close to the left side, of the second transverse plate, a rotating rod penetrates through the inner cavity of the fourth bearing, the top end of the rotating rod is fixedly connected with the second conical gear, a rotating disk is fixedly connected to the bottom end of the rotating rod, and a fixed shaft is fixedly connected to the position, close to the front side, of the bottom of the rotating disk, just fixed axle bottom cover is equipped with the rectangular channel, the bottom fixedly connected with L shape pole of rectangular channel, be close to top department on the curb plate and seted up the second spout, second spout inner chamber swing joint has the second slider, the one end and the second slider fixed connection of rectangular channel are kept away from to L shape pole, second slider right side fixedly connected with dead lever, just dead lever right-hand member and fly leaf fixed connection.
Further, the fly leaf right side is close to bottom fixedly connected with fifth bearing, just fifth bearing inner chamber is pegged graft and is had the transmission shaft, the transmission shaft outside is close to intermediate position department cover and is equipped with the swing board, just the right side of swing board is close to front side department swing joint and has the connecting rod, the one end that the swing board was kept away from to the connecting rod is articulated with the bottom of push pedal, the outside of transmission shaft is close to left end department cover and is equipped with loose gear, just loose gear's top meshing has limit gear, limit gear's left side fixedly connected with third slider, the fly leaf right side is close to bottom department and has seted up the third spout, third slider swing joint is at third spout inner chamber, limit gear's top fixedly connected with pull ring, the hand wheel of right-hand member fixedly connected with of transmission shaft.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. through the mutual matching among the motor, the worm wheel, the worm, the first conical gear, the second conical gear, the rotating rod, the rotary table, the fixed shaft, the rectangular groove, the L-shaped rod, the movable plate, the spray head, the water pump, the water pumping pipe, the water outlet pipe and the hose, the spraying range of the spray head is enlarged through the back-and-forth movement of the spray head, so that the working area is enlarged, and the working efficiency is improved;
2. can adjust the height of shower nozzle through mutually supporting between transmission shaft, swinging plate, connecting rod, push pedal, hand wheel, loose gear, limit gear and the pull ring to can carry out the pesticide to the maize plant seedling of co-altitude not and spray, strengthened prevention and cure effect.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of the present embodiment;
FIG. 2 is a right side view of the component moving plate;
fig. 3 is an enlarged view of a portion a in fig. 1.
In the figure: 1. a carrier plate; 2. a baffle plate; 3. a box body; 4. a storage battery; 5. a water pump; 6. a motor; 7. a worm gear; 8. a rotating shaft; 9. stirring blades; 10. a worm; 11. a side plate; 12. a first bevel gear; 13. a second bevel gear; 14. a rotating rod; 15. a turntable; 16. a rectangular groove; 17. an L-shaped rod; 18. a hand-operated wheel; 19. a movable plate; 20. a hose; 21. pushing the plate; 22. a spray head; 23. a drive shaft; 24. a movable gear; 25. a limit gear; 26. a swing plate; 27. a connecting rod.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 3, an all-directional pesticide spraying device specially used for preventing and controlling corn diseases and pests comprises a bearing plate 1, a baffle 2 is fixedly connected to the left side of the bearing plate 1, two handles are fixedly connected to the left side of the baffle 2 near the top, the two handles are arranged in a front-back manner, a rolling mechanism is arranged at the bottom of the bearing plate 1, the rolling mechanism comprises a plurality of vertical plates, the plurality of vertical plates are respectively and fixedly connected to the bottom of the bearing plate 1 near four corners, rollers are arranged on one sides of the plurality of vertical plates near the center of the bottom of the bearing plate 1, movable shafts are arranged between the vertical plates and the rollers, two ends of each movable shaft are respectively and movably connected with the adjacent vertical plates and the adjacent rollers, a box body 3 is fixedly connected to the middle position of the top of the bearing plate 1, a pesticide inlet pipe is inserted to the top of the box body 3 near the left side, a support is fixedly connected to the top of the box body 3, and a motor 6 is fixedly connected to the top of the support, the power output end of the motor 6 is fixedly connected with a worm wheel 7, the worm wheel 7 is positioned at the bottom of the support, the inner cavity of the box body 3 is provided with a stirring mechanism, the stirring mechanism comprises a rotating shaft 8, the rotating shaft 8 is fixedly connected at the bottom of the worm wheel 7, a first bearing is fixedly connected at the middle position of the top of the box body 3, the bottom end of the rotating shaft 8 penetrates through the first bearing and extends to the inner cavity of the box body 3, and is fixedly connected with a plurality of stirring blades 9, the right side of the box body 3 is provided with a side plate 11, the bottom of the side plate 11 is fixedly connected with the bearing plate 1, the right side of the side plate 11 is provided with a spraying mechanism, the spraying mechanism comprises a movable plate 19, the movable plate 19 is positioned at the right side of the side plate 11 close to the top, the right side of the movable plate 19 is provided with a push plate 21 close to the top, the left side of the push plate 21 is fixedly connected with a first sliding block, the right side of the movable plate 19 is provided with a first sliding groove close to the top, and the first sliding block is movably connected with the inner cavity of the first sliding groove, the right side of the push plate 21 is fixedly connected with a spray head 22, the right side of the box body 3 is provided with a water pump 5, the left side of the water pump 5 is inserted with a water pumping pipe, the left end of the water pumping pipe penetrates through the right side of the box body 3 and extends to the inner cavity of the box body 3, the right side of the water pump 5 is inserted with a water outlet pipe, the right end of the water outlet pipe penetrates through the side plate 11 and is fixedly connected with a hose 20, the right side of the side plate 11, which is close to the bottom, is fixedly connected with a first transverse plate, a through hole is formed in the first transverse plate, one end of the hose 20, which is far away from the water outlet pipe, penetrates through the through hole and is fixedly connected with the spray head 22, the front side of the worm wheel 7 is engaged with a worm 10, the top of the box body 3, which is close to the right side, is fixedly connected with a fixed plate, a second bearing is fixedly connected on the fixed plate, the left side of the side plate 11, the right end of the worm 10, which is inserted in the inner cavity of the third bearing, the outer side of the worm 10 is sleeved with a first bevel gear 12, a second bevel gear 13 is meshed with the bottom of the first bevel gear 12, a second transverse plate is arranged at the bottom of the second bevel gear 13, the right side of the second transverse plate is fixedly connected with a side plate 11, a fourth bearing is fixedly connected to the second transverse plate near the left side, a rotating rod 14 penetrates through the inner cavity of the fourth bearing, the top end of the rotating rod 14 is fixedly connected with the second bevel gear 13, the bottom end of the rotating rod 14 is fixedly connected with a rotating disk 15, a fixed shaft is fixedly connected to the bottom of the rotating disk 15 near the front side, a rectangular groove 16 is sleeved at the bottom end of the fixed shaft, an L-shaped rod 17 is fixedly connected to the bottom of the rectangular groove 16, a second sliding groove is arranged on the side plate 11 near the top, a second sliding block is movably connected to the inner cavity of the second sliding groove, one end of the L-shaped rod 17 far away from the rectangular groove 16 is fixedly connected with the second sliding block, a fixed rod is fixedly connected to the right side of the second sliding block, and the right end of the fixed rod is fixedly connected with a movable plate 19, a fifth bearing is fixedly connected to the right side of the movable plate 19 near the bottom, a transmission shaft 23 is inserted into an inner cavity of the fifth bearing, a swinging plate 26 is sleeved on the outer side of the transmission shaft 23 near the middle position, a connecting rod 27 is movably connected at the position close to the front side of the right side of the swinging plate 26, one end of the connecting rod 27 far away from the swinging plate 26 is hinged with the bottom of the push plate 21, a movable gear 24 is sleeved at the position close to the left end of the outer side of the transmission shaft 23, and the top of the movable gear 24 is engaged with a limit gear 25, the left side of the limit gear 25 is fixedly connected with a third slide block, the right side of the movable plate 19 is close to the bottom and is provided with a third chute, the third slide block is movably connected with an inner cavity of the third chute, the top of the limit gear 25 is fixedly connected with a pull ring, the right end of the transmission shaft 23 is fixedly connected with a hand-operated wheel 18, the left side of the box body 3 is provided with a storage battery 4, and the bottom of the storage battery 4 is fixedly connected with the bearing plate 1.
The working principle is as follows: when the utility model is used, the pesticide to be sprayed for pest control is injected into the box body 3 through the pesticide inlet pipe, the motor 6 and the water pump 5 are started through the power supply of the storage battery 4, the motor 6 works to drive the worm wheel 7 to rotate, the worm wheel 7 rotates to drive the rotating shaft 8 to rotate, the rotating shaft 8 rotates to drive the plurality of stirring blades 9 to rotate, the plurality of stirring blades 9 rotate to stir the pesticide in the box body 3, the pesticide is prevented from depositing at the bottom of the inner cavity of the box body 3, the worm wheel 7 rotates to drive the worm 10 which is meshed with the worm wheel 7 to rotate, the worm 10 rotates to drive the first conical gear 12 to rotate, the first conical gear 12 rotates to drive the second conical gear 13 which is meshed with the first conical gear to rotate, the second conical gear 13 rotates to drive the rotating rod 14 to rotate, the rotating rod 14 rotates to drive the rotating disk 15 to rotate, the rotating rod 15 rotates to drive the fixed shaft to rotate, the fixed shaft rotates to drive the rectangular groove 16 to move back and forth in the inner cavity of the rectangular groove 16, the rectangular groove 16 moves back and forth and drives the second sliding block to move in the inner cavity of the second sliding groove through the L-shaped rod 17, so that the rectangular groove 16 is limited, and simultaneously the movable plate 19 moves back and forth, the movable plate 19 moves back and forth to drive the spray head 22 to move back and forth, the water pump 5 works to convey pesticide to the spray head 22 through the water outlet pipe and the hose 20, and spray through the back and forth movement of the spray head 22, so that the working efficiency is improved while the spraying area is increased, when the height of the spray head 22 needs to be adjusted, the pull ring is pulled to move upwards, the pull ring moves upwards to drive the limiting gear 25 to move upwards, the limiting gear 25 is limited through the movement of the third sliding block in the third sliding groove, when the limiting gear 25 is not meshed with the movable gear 24, the hand-operated wheel 18 is rotated to drive the transmission shaft 23 to rotate, and the transmission shaft 23 rotates to drive the swinging plate 26 to deflect upwards by taking the transmission shaft 23 as the axial direction, thereby promote push pedal 21 rebound through connecting rod 27, and it is spacing to push pedal 21 to remove at first spout inner chamber through first slider, push pedal 21 rebound drives shower nozzle 22 rebound, thereby the height of spraying has been increaseed, when the height is sprayed in needs reducing, hand wheel 18 of reverse rotation can, after altitude mixture control accomplishes, loosen the pull ring, make limit gear 25 and running gear 24 mesh again, thereby fix push pedal 21, through the adjustable of shower nozzle 22 height, can carry out the pesticide to not co-altitude maize plant seedling and spray, the prevention and cure effect of plant diseases and insect pests has been strengthened.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims (7)

1. The utility model provides a dedicated all-round pesticide of sick worm control of maize sprinkles device, includes loading board (1), its characterized in that: the left side of the bearing plate (1) is fixedly connected with a baffle plate (2), the left side of the baffle plate (2) is fixedly connected with two handles which are arranged in the front and back directions and are close to the top, the bottom of the bearing plate (1) is provided with a rolling mechanism, the middle position of the top of the bearing plate (1) is fixedly connected with a box body (3), the top of the box body (3) is inserted with a medicine inlet pipe close to the left side, the top of the box body (3) is fixedly connected with a support, the top of the support is fixedly connected with a motor (6), the power output end of the motor (6) is fixedly connected with a worm wheel (7), the worm wheel (7) is positioned at the bottom of the support, the inner cavity of the box body (3) is provided with a stirring mechanism, the right side of the box body (3) is provided with a side plate (11), and the bottom of the side plate (11) is fixedly connected with the bearing plate (1), the right side of curb plate (11) is equipped with spraying mechanism, the left side of box (3) is equipped with battery (4), just the bottom and loading board (1) fixed connection of battery (4).
2. The omnibearing pesticide spraying device special for preventing and controlling corn diseases and pests as claimed in claim 1, which is characterized in that: the rolling mechanism comprises a plurality of vertical plates, the vertical plates are fixedly connected to the bottom of the bearing plate (1) respectively and are close to four corners, the vertical plates are provided with idler wheels close to the center of the bottom of the bearing plate (1), movable shafts are arranged between the vertical plates and the idler wheels, and the two ends of each movable shaft are respectively movably connected with the adjacent vertical plates and the adjacent idler wheels.
3. The omnibearing pesticide spraying device special for preventing and controlling corn diseases and pests as claimed in claim 1, which is characterized in that: rabbling mechanism includes pivot (8), just pivot (8) fixed connection is in the bottom of worm wheel (7), the first bearing of top intermediate position department fixedly connected with of box (3), the first bearing is run through to the bottom of pivot (8), extends to the inner chamber of box (3) to a plurality of fixedly connected with stirring leaf (9).
4. The omnibearing pesticide spraying device special for preventing and controlling corn diseases and pests as claimed in claim 1, which is characterized in that: spraying mechanism includes fly leaf (19), just the right side that fly leaf (19) are located curb plate (11) is close to top department, the right side of fly leaf (19) is close to top department and is equipped with push pedal (21), the first slider of left side fixedly connected with of push pedal (21), the right side of fly leaf (19) is close to top department and has seted up first spout, first slider swing joint is in first spout inner chamber, the right side fixedly connected with shower nozzle (22) of push pedal (21).
5. The all-round pesticide spraying device special for preventing and controlling corn diseases and insects as claimed in claim 4, characterized in that: the right side of box (3) is equipped with water pump (5), it has the drinking-water pipe to peg graft in the left side of water pump (5), just the drinking-water pipe left end runs through the right side of box (3) to extend to the inner chamber of box (3), it has the outlet pipe to peg graft on the right side of water pump (5), just the outlet pipe right-hand member runs through curb plate (11) to fixedly connected with hose (20), curb plate (11) right side is close to the first diaphragm of bottom fixedly connected with, just the through-hole has been seted up on the first diaphragm, the one end that the outlet pipe was kept away from in hose (20) runs through the through-hole to with shower nozzle (22) fixed connection.
6. The all-round pesticide spraying device special for preventing and controlling corn diseases and insects as claimed in claim 4, characterized in that: a worm (10) is meshed with the front side of the worm wheel (7), a fixed plate is fixedly connected to the position, close to the right side, of the top of the box body (3), a second bearing is fixedly connected to the fixed plate, a third bearing is fixedly connected to the position, close to the top, of the left side of the side plate (11), the right end of the worm (10) penetrates through the second bearing and is inserted into an inner cavity of the third bearing, a first bevel gear (12) is sleeved on the position, close to the right end, of the outer side of the worm (10), a second bevel gear (13) is meshed with the bottom of the first bevel gear (12), a second transverse plate is arranged at the bottom of the second bevel gear (13), the right side of the second transverse plate is fixedly connected with the side plate (11), a fourth bearing is fixedly connected to the position, close to the left side, of the second transverse plate, a rotating rod (14) penetrates through the inner cavity of the fourth bearing, and the top end of the rotating rod (14) is fixedly connected with the second bevel gear (13), just bottom fixedly connected with carousel (15) of bull stick (14), carousel (15) bottom is close to front side department fixedly connected with fixed axle, just fixed axle bottom cover is equipped with rectangular channel (16), the bottom fixedly connected with L shape pole (17) of rectangular channel (16), be close to top department on curb plate (11) and seted up the second spout, second spout inner chamber swing joint has the second slider, the one end and the second slider fixed connection of rectangular channel (16) are kept away from to L shape pole (17), second slider right side fixedly connected with dead lever, just dead lever right-hand member and fly leaf (19) fixed connection.
7. The all-round pesticide spraying device special for preventing and controlling corn diseases and insects as claimed in claim 4, characterized in that: a fifth bearing is fixedly connected to the right side of the movable plate (19) close to the bottom, a transmission shaft (23) is inserted into an inner cavity of the fifth bearing, a swinging plate (26) is sleeved on the outer side of the transmission shaft (23) close to the middle position, a connecting rod (27) is movably connected to the right side of the swinging plate (26) close to the front side, one end, far away from the swinging plate (26), of the connecting rod (27) is hinged to the bottom of the push plate (21), a movable gear (24) is sleeved on the outer side of the transmission shaft (23) close to the left end, a limiting gear (25) is meshed with the top of the movable gear (24), a third sliding block is fixedly connected to the left side of the limiting gear (25), a third sliding groove is formed in the right side of the movable plate (19) close to the bottom, the third sliding block is movably connected to the inner cavity of the third sliding groove, and a pull ring is fixedly connected to the top of the limiting gear (25), the right end of the transmission shaft (23) is fixedly connected with a hand-operated wheel (18).
CN202121309611.6U 2021-06-11 2021-06-11 Dedicated all-round pesticide of sick worm control of maize spills device Active CN214962169U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121309611.6U CN214962169U (en) 2021-06-11 2021-06-11 Dedicated all-round pesticide of sick worm control of maize spills device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121309611.6U CN214962169U (en) 2021-06-11 2021-06-11 Dedicated all-round pesticide of sick worm control of maize spills device

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Publication Number Publication Date
CN214962169U true CN214962169U (en) 2021-12-03

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114887429A (en) * 2022-04-28 2022-08-12 席齐明 Personnel protection device and method special for hydraulic engineering construction blasting

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114887429A (en) * 2022-04-28 2022-08-12 席齐明 Personnel protection device and method special for hydraulic engineering construction blasting
CN114887429B (en) * 2022-04-28 2024-06-07 席齐明 Personnel protection device and method special for hydraulic engineering construction blasting

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