CN112243983A - Device for directionally adjusting diameter of nozzle of vegetable insecticide and implementation method thereof - Google Patents
Device for directionally adjusting diameter of nozzle of vegetable insecticide and implementation method thereof Download PDFInfo
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- CN112243983A CN112243983A CN202011072605.3A CN202011072605A CN112243983A CN 112243983 A CN112243983 A CN 112243983A CN 202011072605 A CN202011072605 A CN 202011072605A CN 112243983 A CN112243983 A CN 112243983A
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- nozzle
- diameter
- sleeve
- conical head
- adjusting
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
- A01M7/0003—Atomisers or mist blowers
Abstract
The invention discloses a device for directionally adjusting the diameter of a nozzle of a vegetable insecticide and an implementation method thereof, belonging to the technical field of agriculture and comprising a bottle barrel and a bottle cap, wherein an anti-slip sleeve is nested at the tail end of the bottom of the bottle barrel, a nozzle is connected with an opening at the top of the bottle barrel, the bottle cap for protecting the nozzle is sleeved outside the bottle barrel, a nozzle adjusting mechanism and a driving mechanism are arranged inside the nozzle, and the driving mechanism is connected with the nozzle adjusting mechanism to control the diameter of the nozzle so as to adjust the flow of the nozzle. The invention provides a device for directionally adjusting the diameter of a nozzle of a vegetable insecticide and an implementation method thereof.A conical gear is driven by the forward and reverse rotation of a rotating rod, a conical head is retracted into an adjusting seat or extended into the nozzle, so that the gas in an outer cavity is in reverse contact with the liquid in an inner cavity at the nozzle, and the space of the impact of high-pressure gas on the liquid is changed due to the change of the diameter of the nozzle, so that the diameter of the sprayed atomized insecticide sprayed by the nozzle is adjusted, the adjustment is simple, and the adjustment is carried out in real time according to the sprayed plants.
Description
Technical Field
The invention relates to the technical field of agriculture, in particular to a device for directionally adjusting the diameter of a nozzle of a vegetable insecticide and an implementation method thereof.
Background
At present, in vegetable planting, chemical pesticides are generally used for preventing insect pests, and the problem of environmental pollution caused by using a large amount of chemical pesticides is becoming serious. Meanwhile, chemical pesticide is adopted, so that various pests generate drug resistance and drug resistance, the difficulty of prevention and control is increased, and even the prevention and control failure is caused. In addition, chemical pesticides pose a threat to beneficial organisms because they are not selective. Moreover, many chemical pesticides are undegradable or difficult to degrade and tend to accumulate in animals and plants resulting in an enrichment of pollutants. With the improvement of the living standard of people, the requirements on the quality of agricultural products are high, and people need to eat well and eat healthily. Therefore, the development of nontoxic and pollution-free high-efficiency botanical insecticides is a direction for the development of pesticides in future.
The insecticide is typically sprayed from a nozzle and the nozzle is selected to suit the need to achieve optimum spray performance in use. The characteristics of the nozzle are mainly reflected in the spray type of the nozzle, i.e. the shape of the liquid formed when it leaves the nozzle opening and its operational properties, and the variety of nozzles is very wide.
Along with the nozzle by people's extensive use for the functional requirement of nozzle is not high, but current nozzle has had some shortcomings, for example current nozzle can not be fine to flow continuation regulation, and the regulation of discharge is too troublesome, wastes time and energy, need change the nozzle of different models back and forth, serious reduction spray efficiency and spray effect, so that can't satisfy the use of different positions, great reduction the usability of nozzle.
Disclosure of Invention
The invention aims to provide a device for directionally adjusting the diameter of a nozzle of a vegetable insecticide and an implementation method thereof, wherein the diameter of the nozzle is changed, so that the space of impact of high-pressure gas on liquid is also changed, the diameter of the pesticide spray sprayed by the nozzle is adjusted simply, and the device is adjusted in real time according to the sprayed plants so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a spout diameter directional adjustment device of vegetable insecticide, includes a bottle section of thick bamboo and bottle lid, the terminal antiskid cover of nesting in the bottom of a bottle section of thick bamboo, the top opening part of a bottle section of thick bamboo connects the nozzle to the bottle lid of protection nozzle is overlapped to the outside, the internally mounted of nozzle has spout adjustment mechanism and actuating mechanism, actuating mechanism and spout adjustment mechanism are connected.
Furthermore, the nozzle comprises an outer sleeve, an inner sleeve, a choke plate and a swirler, wherein the inner sleeve is arranged in the outer sleeve, an outer conical cylinder and an inner conical cylinder are respectively sleeved on the same side openings of the outer sleeve and the inner sleeve, an outer cavity is formed between the outer sleeve and the inner sleeve, an inner cavity is formed inside the inner sleeve, and the choke plate and the swirler are arranged in the outer cavity and divide the outer cavity into three sections.
Furthermore, the narrow mouths of the outer cone and the inner cone are provided with nozzles, the nozzles of the outer cone and the inner cone are coaxial, and the diameters of the nozzles of the outer cone and the inner cone are the same.
Furthermore, the three sections of the outer cavity are respectively an air inlet section, an annular section and an air injection section, the annular section is formed between the air baffle plate and the cyclone, the air inlet section is connected with the air cylinder pipe and used for air flow inflow, and the air injection section is communicated with the nozzles of the outer cone cylinder and the inner cone cylinder.
Furthermore, the inner cavity is connected with a liquid barrel pipe at one end, the other end of the inner cavity is communicated with the air injection section through a nozzle, and the liquid barrel flowing into the inner cavity is contacted with high-pressure air flow at the air injection section through the nozzle of the inner conical barrel and is ejected from the nozzle of the outer conical barrel.
Furthermore, the nozzle adjusting mechanism comprises an adjusting seat, a conical head and a sleeve, the outer sleeve and the inner sleeve are clamped on the adjusting seat, the conical head is coaxially connected with the sleeve, and the conical head is inserted into the adjusting seat.
Furthermore, the diameter of the narrow opening of the conical head is smaller than the diameter of the nozzle of the inner conical cylinder, a sliding groove is machined in the conical head, and a clamping block clamped into the sliding groove to limit rotation of the conical head is fixed on the adjusting seat.
Further, the driving mechanism comprises a rotating rod, a screw rod and a conical gear, one end of the rotating rod extends to the outside of the nozzle, one end of the rotating rod is arranged in the adjusting seat, the rotating rod and the screw rod are meshed through the conical gear, and the other end of the screw rod is meshed with the sleeve.
The invention provides another technical scheme, which comprises an implementation method of a device for directionally adjusting the diameter of a nozzle of a vegetable insecticide, and the implementation method comprises the following steps:
s1: after the bottle cap is opened, a liquid cylinder pipe and an air cylinder pipe in the nozzle work, and air and liquid are respectively pumped to flow into the outer cavity and the inner cavity;
s2: when the diameter of the adjusting nozzle is increased, the rotating rod rotates to drive the screw rod to rotate through the conical gear, the screw rod rotates to be meshed with the conical head, the conical head is limited by the clamping block to rotate and only can slide along the sliding groove, the conical head is retracted into the adjusting seat, and the diameter of the nozzle is increased;
s3: when the diameter of the adjusting nozzle is reduced, the rotating rod rotates reversely to drive the screw rod to rotate through the conical gear, the conical head extends from the adjusting seat, the conical head is inserted into the nozzle of the inner conical barrel, and the diameter of the nozzle is reduced.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a device for directionally adjusting the diameter of a nozzle of a vegetable insecticide and an implementation method thereof.A conical gear is driven by the forward and reverse rotation of a rotating rod, a conical head is retracted into an adjusting seat or extended into the nozzle, so that the gas in an outer cavity is in reverse contact with the liquid in an inner cavity at the nozzle, and the space of the impact of high-pressure gas on the liquid is changed due to the change of the diameter of the nozzle, so that the diameter of the sprayed atomized insecticide sprayed by the nozzle is adjusted, the adjustment is simple, and the adjustment is carried out in real time according to the sprayed plants.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a partial block diagram of the present invention;
FIG. 3 is a view showing the internal structure of the nozzle of the present invention;
FIG. 4 is a partial view of the spout adjustment mechanism of the present invention;
FIG. 5 is a view showing a state where the diameter of the nozzle hole of the present invention is enlarged;
fig. 6 is a view showing a state where the diameter of the nozzle hole of the present invention is reduced.
In the figure: 1. a bottle barrel; 2. a bottle cap; 3. a nozzle; 31. a jacket; 311. an outer cone; 312. an inner cone; 32. an inner sleeve; 33. a choke plate; 34. a swirler; 35. an outer cavity; 36. an inner cavity; 4. a spout adjusting mechanism; 41. an adjusting seat; 42. a conical head; 43. a sleeve; 5. a drive mechanism; 51. a rotating rod; 52. a screw; 53. a bevel gear; 6. an anti-slip sleeve.
Embodiments of the cartridge
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, a device for directionally adjusting the diameter of a nozzle of a vegetable insecticide comprises a bottle barrel 1 and a bottle cap 2, wherein an anti-slip sleeve 6 is nested at the tail end of the bottom of the bottle barrel 1, the anti-slip sleeve 6 is made of rubber, staggered anti-slip marks are engraved on the surface of the anti-slip sleeve 6, friction is increased to avoid dropping in the process of grabbing the bottle barrel 1, a nozzle 3 is connected to the opening at the top of the bottle barrel 1, the nozzle 3 adopts the existing pressing type, insecticide is sprayed out when the nozzle 3 is pressed down, the bottle cap 2 with a protective nozzle 3 is sleeved outside the bottle barrel, the bottle cap 2 is used for protecting the nozzle 3, the problem that the pesticide is sprayed out when the nozzle 3 is not used is avoided, the nozzle 3 is internally provided with a nozzle adjusting mechanism 4 and a driving mechanism 5, the driving mechanism 5 is connected with the nozzle adjusting mechanism 4 to control the diameter of the nozzle, so as to adjust the flow rate, thereby changing the flow rate of the shot.
Referring to fig. 3, the nozzle 3 includes an outer sleeve 31, an inner sleeve 32, a choke plate 33 and a swirler 34, the inner sleeve 32 is disposed in the outer sleeve 31, and an outer cone 311 and an inner cone 312 are respectively sleeved on the same side openings of the outer sleeve 31 and the inner sleeve 32, the diameters of the outer cone 311 and the inner cone 312 are set according to the outer diameters of the outer sleeve 31 and the inner sleeve 32, an outer cavity 35 is formed between the outer sleeve 31 and the inner sleeve 32, an inner cavity 36 is formed inside the inner sleeve 32, and the choke plate 33 and the swirler 34 are disposed in the outer cavity 35 and divide the outer cavity 35 into three sections through the choke plate 33.
The narrow mouths of the outer cone 311 and the inner cone 312 are provided with nozzles, the nozzles of the outer cone 311 and the inner cone 312 are coaxial, the diameters of the nozzles are the same, the nozzles are arranged on the same axis, the nozzles are arranged on the same line, the gas of the outer cavity 35 and the liquid of the inner cavity 36 are in contact with each other in a reaction mode at the positions of the nozzles, the high-pressure gas impacts the liquid, and therefore the nozzle 3 sprays atomized pesticide.
The three sections of the outer cavity 35 are respectively an air inlet section, an annular section and an air injection section, the annular section is formed between the choke plate 33 and the cyclone 34, the air inlet section is connected with the air cylinder pipe and used for air flow inflow, and the air injection section is communicated with the nozzles of the outer cone 311 and the inner cone 312.
The inner cavity 36 is connected with a liquid barrel pipe at one end, the other end of the inner cavity 36 is communicated with the air injection section through a nozzle, and the liquid barrel flowing into the inner cavity 36 is contacted with high-pressure air flow at the air injection section through the nozzle of the inner cone 312 and is ejected from the nozzle of the outer cone 311.
Referring to fig. 4, the nozzle adjusting mechanism 4 includes an adjusting seat 41, a conical head 42 and a sleeve 43, the outer sleeve 31 and the inner sleeve 32 are clamped on the adjusting seat 41, the conical head 42 and the sleeve 43 are coaxially connected, and the conical head 42 is inserted into the adjusting seat 41.
The diameter of the narrow opening of the conical head 42 is smaller than the diameter of the nozzle of the inner cone 312, a chute is processed on the conical head 42, and a clamping block which is clamped into the chute to limit the rotation of the conical head 42 is fixed on the adjusting seat 41.
The driving mechanism 5 comprises a rotating rod 51, a screw rod 52 and a conical gear 53, one end of the rotating rod 51 extends to the outside of the nozzle 3, one end of the rotating rod is arranged in the adjusting seat 41, the rotating rod 51 is meshed with the screw rod 52 through the conical gear 53, the other end of the screw rod 52 is meshed with the sleeve 43, the rotating rod 51 is used for rotating to drive the screw rod 52 to rotate, the conical gear 53 changes the rotating direction and drives the conical head 42 to move, and therefore the diameter of the nozzle is adjusted.
Referring to fig. 5, when the rotating rod 51 rotates and the screw 52 is driven to rotate through the bevel gear 53, the conical head 42 is retracted into the adjusting seat 41, the diameter of the nozzle is increased, the gas in the outer cavity 35 and the liquid in the inner cavity 36 are in contact with each other at the nozzle, and the space for the high-pressure gas to impact the liquid is increased due to the large diameter of the nozzle, so that the diameter of the atomized pesticide sprayed from the nozzle 3 is increased.
Referring to fig. 6, the rotating rod 51 rotates in the opposite direction, the screw 52 is driven to rotate through the bevel gear 53, the conical head 42 is extended from the adjusting seat 41, the conical head 42 is inserted into the nozzle of the inner cone 312, the diameter of the nozzle is reduced, the gas in the outer cavity 35 and the liquid in the inner cavity 36 are in contact with each other at the nozzle, the space for the high-pressure gas to impact the liquid is reduced due to the small diameter of the nozzle, and the diameter of the atomized pesticide sprayed from the nozzle 3 is also reduced.
In order to better show the method for adjusting the diameter of the nozzle, the embodiment is an implementation method of the device for directionally adjusting the diameter of the nozzle of the vegetable insecticide, and the method comprises the following steps:
the method comprises the following steps: after the bottle cap 2 is opened, the liquid cylinder pipe and the gas cylinder pipe in the nozzle 3 work to respectively extract gas and liquid to flow into the outer cavity 35 and the inner cavity 36;
step two: when the diameter of the adjusting nozzle is increased, the rotating rod 51 rotates to drive the screw rod 52 to rotate through the conical gear 53, the screw rod 52 is rotatably meshed with the conical head 42, the conical head 42 is limited by the clamping block to rotate and can only slide along the sliding groove, the conical head 42 is retracted into the adjusting seat 41, and the diameter of the nozzle is increased;
step three: when the diameter of the adjusting nozzle is reduced, the rotating rod 51 rotates reversely to drive the screw rod 52 to rotate through the bevel gear 53, the conical head 42 is extended from the adjusting seat 41, the conical head 42 is inserted into the nozzle of the inner cone 312, and the diameter of the nozzle is reduced.
In summary, the following steps: the device for directionally adjusting the diameter of the nozzle of the vegetable insecticide and the implementation method thereof have the advantages that the conical gear 53 is driven by the forward and reverse rotation of the rotating rod 51, the conical head 42 is retracted into the adjusting seat 41 or extends into the nozzle, the gas of the outer cavity 35 is in contact with the liquid of the inner cavity 36 at the nozzle in a reaction mode, and the space of the impact of high-pressure gas on the liquid is changed due to the change of the diameter of the nozzle, so that the diameter of the atomized insecticide sprayed by the nozzle 3 is adjusted, the adjustment is simple, and the adjustment is carried out in real time according to the sprayed plants.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention, the technical solutions and the inventive concepts of the present invention with equivalent or modified alternatives and modifications within the technical scope of the present invention.
Claims (9)
1. The utility model provides a spout diameter directional adjustment device of vegetable insecticide, its characterized in that includes a bottle section of thick bamboo (1) and bottle lid (2), the terminal nested antiskid cover (6) in a bottle section of thick bamboo (1) bottom, the top opening part of a bottle section of thick bamboo (1) connects nozzle (3) to outside cover has bottle lid (2) of protection nozzle (3), the internally mounted of nozzle (3) has spout adjustment mechanism (4) and actuating mechanism (5), actuating mechanism (5) are connected with spout adjustment mechanism (4).
2. The vegetable insecticide orifice diameter directional adjustment device as claimed in claim 1, wherein the nozzle (3) comprises an outer sleeve (31), an inner sleeve (32), a choke plate (33) and a swirler (34), the inner sleeve (32) is disposed in the outer sleeve (31), and an outer cone (311) and an inner cone (312) are respectively sleeved on the same side openings of the outer sleeve (31) and the inner sleeve (32), an outer cavity (35) is formed between the outer sleeve (31) and the inner sleeve (32), an inner cavity (36) is formed inside the inner sleeve (32), and the choke plate (33) and the swirler (34) are installed in the outer cavity (35) and divide the outer cavity (35) into three sections.
3. The device for directionally adjusting the diameter of a nozzle of a vegetable insecticide as claimed in claim 2, wherein the nozzle is arranged at the narrow opening of the outer cone (311) and the narrow opening of the inner cone (312), the nozzle of the outer cone (311) and the nozzle of the inner cone (312) are coaxial, and the diameters of the nozzles are the same.
4. The vegetable insecticide nozzle diameter directional adjustment device as claimed in claim 2, wherein the outer chamber (35) has three sections, namely an air inlet section, an annular section and an air injection section, the annular section is formed between the choke plate (33) and the cyclone (34), the air inlet section is connected with the air cylinder pipe for air inflow, and the air injection section is communicated with the nozzle of the outer cone (311) and the inner cone (312).
5. The vegetable insecticide nozzle diameter directional adjusting device as claimed in claim 2, wherein the inner cavity (36) is connected with one end of the liquid barrel pipe, the other end of the inner cavity (36) is communicated with the air injection section through the nozzle, and the liquid barrel flowing into the inner cavity (36) is contacted with the high-pressure air flow in the air injection section through the nozzle of the inner conical barrel (312) and is ejected from the nozzle of the outer conical barrel (311).
6. The vegetable insecticide nozzle diameter directional adjustment device as claimed in claim 1, wherein the nozzle adjustment mechanism (4) comprises an adjustment seat (41), a conical head (42) and a sleeve (43), the outer sleeve (31) and the inner sleeve (32) are clamped on the adjustment seat (41), the conical head (42) and the sleeve (43) are coaxially connected, and the conical head (42) is inserted into the adjustment seat (41).
7. The device for directionally adjusting the diameter of a nozzle of a vegetable insecticide as claimed in claim 6, wherein the diameter of the narrow opening of the conical head (42) is smaller than the diameter of the nozzle of the inner conical cylinder (312), a sliding groove is formed on the conical head (42), and a clamping block which is clamped into the sliding groove to limit the rotation of the conical head (42) is fixed on the adjusting seat (41).
8. A vegetable insecticide spray opening diameter directional adjustment device as claimed in claim 1, wherein the driving mechanism (5) comprises a rotary rod (51), a screw rod (52) and a conical gear (53), one end of the rotary rod (51) extends to the outside of the spray nozzle (3), one end is arranged in the adjusting seat (41), the rotary rod (51) and the screw rod (52) are engaged through the conical gear (53), and the other end of the screw rod (52) is engaged with the sleeve (43).
9. A method for implementing the device for directional adjustment of the diameter of the nozzle of vegetable insecticide as claimed in claim 1, comprising the steps of:
s1: after the bottle cap (2) is opened, a liquid cylinder pipe and a gas cylinder pipe in the nozzle (3) work, and gas and liquid are respectively pumped to flow into the outer cavity (35) and the inner cavity (36);
s2: when the diameter of the adjusting nozzle is increased, the rotating rod (51) rotates to drive the screw rod (52) to rotate through the bevel gear (53), the screw rod (52) is rotatably meshed with the conical head (42), the conical head (42) is limited by the clamping block to rotate and can only slide along the sliding groove, the conical head (42) is retracted into the adjusting seat (41), and the diameter of the nozzle is increased;
s3: when the diameter of the adjusting nozzle is reduced, the rotating rod (51) rotates reversely to drive the screw rod (52) to rotate through the bevel gear (53), the conical head (42) extends from the adjusting seat (41), the conical head (42) is inserted into the nozzle of the inner conical cylinder (312), and the diameter of the nozzle is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011072605.3A CN112243983A (en) | 2020-10-09 | 2020-10-09 | Device for directionally adjusting diameter of nozzle of vegetable insecticide and implementation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011072605.3A CN112243983A (en) | 2020-10-09 | 2020-10-09 | Device for directionally adjusting diameter of nozzle of vegetable insecticide and implementation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112243983A true CN112243983A (en) | 2021-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011072605.3A Pending CN112243983A (en) | 2020-10-09 | 2020-10-09 | Device for directionally adjusting diameter of nozzle of vegetable insecticide and implementation method thereof |
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| Country | Link |
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| CN (1) | CN112243983A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113694221A (en) * | 2021-07-19 | 2021-11-26 | 河南牧业经济学院 | Animal house subacid electrolysis water preparation spraying all-in-one |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB311109A (en) * | 1928-05-18 | 1929-05-09 | Aubrey Edmund Westwood | Improvements relating to pump-operated fluid-ejecting devices |
| CN2592564Y (en) * | 2003-01-02 | 2003-12-17 | 云霄泷进精细化工有限公司 | Spray can |
| CN203872862U (en) * | 2014-01-17 | 2014-10-15 | 济南大学 | Household mosquito eradication disinsector |
| CN204710605U (en) * | 2015-05-27 | 2015-10-21 | 上海守望者喷雾智能系统有限公司 | A kind of steam spray nozzle |
| CN207759404U (en) * | 2017-12-08 | 2018-08-24 | 江西中源化工有限公司 | A kind of agricultural chemical insecticide packet bottle of good airproof performance |
-
2020
- 2020-10-09 CN CN202011072605.3A patent/CN112243983A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB311109A (en) * | 1928-05-18 | 1929-05-09 | Aubrey Edmund Westwood | Improvements relating to pump-operated fluid-ejecting devices |
| CN2592564Y (en) * | 2003-01-02 | 2003-12-17 | 云霄泷进精细化工有限公司 | Spray can |
| CN203872862U (en) * | 2014-01-17 | 2014-10-15 | 济南大学 | Household mosquito eradication disinsector |
| CN204710605U (en) * | 2015-05-27 | 2015-10-21 | 上海守望者喷雾智能系统有限公司 | A kind of steam spray nozzle |
| CN207759404U (en) * | 2017-12-08 | 2018-08-24 | 江西中源化工有限公司 | A kind of agricultural chemical insecticide packet bottle of good airproof performance |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113694221A (en) * | 2021-07-19 | 2021-11-26 | 河南牧业经济学院 | Animal house subacid electrolysis water preparation spraying all-in-one |
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Application publication date: 20210122 |