CN115555142A - Air pressure and self-adaptive combined variable nozzle and control method thereof - Google Patents
Air pressure and self-adaptive combined variable nozzle and control method thereof Download PDFInfo
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- CN115555142A CN115555142A CN202211410377.5A CN202211410377A CN115555142A CN 115555142 A CN115555142 A CN 115555142A CN 202211410377 A CN202211410377 A CN 202211410377A CN 115555142 A CN115555142 A CN 115555142A
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- 238000000034 method Methods 0.000 title claims description 13
- 239000007788 liquid Substances 0.000 claims abstract description 124
- 239000003814 drug Substances 0.000 claims abstract description 81
- 238000005507 spraying Methods 0.000 claims abstract description 51
- 239000007921 spray Substances 0.000 claims description 68
- 230000003044 adaptive effect Effects 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 12
- 239000004973 liquid crystal related substance Substances 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 3
- 238000010168 coupling process Methods 0.000 claims 3
- 238000005859 coupling reaction Methods 0.000 claims 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000007493 shaping process Methods 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 8
- 239000002245 particle Substances 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000000575 pesticide Substances 0.000 description 2
- 241000190633 Cordyceps Species 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000447 pesticide residue Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
- B05B1/16—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
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Abstract
The invention discloses an air pressure and self-adaptive combined variable nozzle which comprises a first three-way joint, wherein one end of the first three-way joint is connected with a pressure sensor, one end of the first three-way joint is communicated with a pipeline, the other end of the first three-way joint is connected with a second three-way joint, one end of the second three-way joint is connected with a first electromagnetic valve, the other end of the second three-way joint is connected with a second electromagnetic valve, the first electromagnetic valve is connected with a first variable nozzle, and the second electromagnetic valve is connected with a second variable nozzle. The single chip microcomputer is adopted to control the type of the variable nozzle which participates in the work according to the liquid medicine pressure, variable spraying can be achieved under the condition that the liquid medicine pressure is greatly changed, the spraying is uniform, the change of the spraying particle size is small, and the actual use requirement of agricultural spraying is met.
Description
Technical Field
The invention relates to the technical field of variable nozzles, in particular to an air pressure and self-adaptive combined variable nozzle and a control method thereof.
Background
As a big country of agricultural production, china always uses chemical control as the most direct and effective mode for solving the diseases and the cordyceps in order to improve the yield of crops. However, pesticide spraying technology and equipment in China are relatively backward, so that the problems of low pesticide utilization rate, high pesticide residue of agricultural products, serious environmental pollution and the like are caused. In order to solve the above problems, variable spraying has been developed, and currently, there are three main types of variable spraying methods: electromagnetic valve pulse width modulation variable spraying, pressure regulation variable spraying and on-line medicine mixing variable spraying. The earliest pressure-regulated variable spray adopts a fixed spray head, and the pressure of the medicine liquid is regulated through a pump body to realize variable spray, but the regulation range of the pressure-regulated variable spray is very small because the number of spray holes and the aperture of the spray holes of the fixed spray head are fixed and the performance of the pump body is limited. To extend the range of adjustment, variable nozzles have been designed. Most of the existing variable nozzles are designed to change the area of the spray holes along with the pressure change, when the pressure change amplitude of the liquid medicine is large, the nozzles have the problem that the particle size of fog drops is large in change, and the nozzles cannot be well matched with variable spray required actually in the agricultural spraying operation process.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an air pressure and self-adaptive combined variable nozzle which can adapt to the pressure change of liquid medicine to realize variable spraying.
In order to solve the technical problem, the invention adopts the following technical scheme:
the utility model provides an atmospheric pressure and self-adaptation combination formula variable shower nozzle, includes first three way connection, first three way connection one end is connected with pressure sensor, one end intercommunication pipeline, and the other end is connected with second three way connection, second three way connection one end is connected with first solenoid valve, and the other end is connected with the second solenoid valve, first solenoid valve is connected with first variable shower nozzle, second solenoid valve is connected with second variable shower nozzle, first variable shower nozzle includes shower nozzle end cover and first shower nozzle body, be provided with the piston in the shower nozzle end cover, piston one side is provided with the spring, the opposite side with inlay the internal sleeve fixed connection of first shower nozzle, first shower nozzle body bottom is provided with the first orifice that is used for spraying the liquid medicine, be provided with a plurality of flow holes that are used for the liquid medicine to flow in and communicate with first orifice on the sleeve lateral wall, first variable shower nozzle is connected with and is used for aerifing or discharging gas in the shower nozzle end cover with control piston lift drive sleeve and reciprocate thereby adjust the flow hole quantity that supplies the liquid medicine to flow in order to realize variable spraying, second variable shower nozzle includes nozzle and second variable shower nozzle body, be provided with the baffle in the nozzle that the air pump is used for the second variable shower nozzle is used for controlling the liquid medicine to spray the baffle bottom and is provided with the spray the liquid medicine.
As a further improvement of the above technical solution:
the liquid flowing holes are arranged on the side wall of the sleeve at spiral uniform intervals, and the second spray holes are arranged on the side wall of the nozzle at spiral uniform intervals.
The nozzle end cover is screwed into the inner cavity of the first nozzle body and is in threaded connection with the first nozzle body.
A connecting rod is arranged between the piston and the sleeve, one end of the connecting rod is connected with the piston bolt, and the other end of the connecting rod penetrates through the bottom wall of the spray head end cover to be in threaded connection with the sleeve.
The top of the spray head end cover is provided with a plurality of exhaust holes, the side wall of the spray head end cover is provided with an air inlet hole used for being connected with an air pump, and the air inlet hole is formed below the piston.
And a liquid inlet used for being connected with the first electromagnetic valve is formed in the side wall of the spray head body.
The sum of the areas of the liquid flow holes is smaller than the cross-sectional area of the liquid inlet cavity and the cross-sectional area of the sleeve cavity.
The inner cavity of the first spray head body is respectively provided with a liquid inlet cavity and a liquid spraying cavity, and the sleeve is embedded in the liquid spraying cavity.
The piston is provided with an O-shaped ring which is tightly attached to the side wall of the inner cavity of the spray head end cover and used for sealing, and the connecting rod is provided with the O-shaped ring used for sealing at the interpenetration position of the connecting rod and the bottom wall of the spray head end cover.
The first spray hole is a conical spray hole.
The second variable nozzle further comprises a connecting nut, a convex ring abutted with the convex ring at the bottom of the inner side of the connecting nut is formed at the top of the nozzle, and the second nozzle body is in threaded connection with the connecting nut and compresses the nozzle.
The second spray holes are arranged to be conical spray holes, and the conical angle of each conical spray hole is 60-120 degrees.
And a liquid inlet for connecting with a second electromagnetic valve is formed in the side wall of the second spray head body.
The sum of the areas of the second spray holes is smaller than the cross-sectional area of the inner cavity of the liquid inlet.
And an O-shaped ring which is tightly attached to the side wall of the inner cavity of the nozzle and used for sealing is arranged on the baffle.
The air pressure and self-adaptive combined variable nozzle control method comprises the following steps of:
s1: opening a pipeline valve, monitoring the liquid medicine pressure in real time by a pressure sensor, transmitting data to a single chip microcomputer, and comparing the received data by the single chip microcomputer;
s2: when the liquid medicine pressure is changed between 0.2Mpa and 0.4Mpa, the singlechip controls the first electromagnetic valve to be opened, the second electromagnetic valve is closed at the same time, and the liquid medicine enters the first variable nozzle;
s3: the singlechip controls the air pump to fill or pump air into or out of the inner cavity of the nozzle end cover of the first variable nozzle, so that the piston moves up and down, the number of liquid flow holes participating in work is adjusted, and variable spraying is realized;
s4: when the pressure of the liquid medicine is changed between 0.4Mpa and 0.6Mpa, the singlechip controls the first electromagnetic valve to be closed, and simultaneously the second electromagnetic valve is opened, so that the liquid medicine enters the second variable nozzle;
s5: a spring in the second variable nozzle compresses or rebounds according to the pressure of the liquid medicine to drive the baffle to move up and down, and the number of second spray holes participating in spraying of the liquid medicine is adjusted to realize variable spraying;
s6: when the pressure of the liquid medicine is lower than 0.2Mpa or higher than 0.6Mpa, the single chip microcomputer controls the first electromagnetic valve and the second electromagnetic valve to be closed simultaneously, and controls the liquid crystal display screen to give an alarm to remind a worker to replenish the liquid medicine or check the rotating speed of the medicine pump.
Compared with the prior art, the invention has the advantages that:
when the air pressure and self-adaptive combined variable nozzle is used, liquid medicine enters the second three-way joint from one end of the first three-way joint, the single chip microcomputer controls the first electromagnetic valve or the second electromagnetic valve to be opened and closed according to the liquid medicine pressure transmitted by the pressure sensor in a numerical control mode so as to control the first variable nozzle or the second variable nozzle to work, when the first variable nozzle works, the single chip microcomputer controls the air pump to fill or extract air into the end cover of the nozzle according to the liquid medicine pressure, the piston drives the sleeve to lift, and therefore the number of liquid flow holes participating in the work is adjusted, and variable spraying is achieved; when the second variable nozzle works, the baffle plate arranged on the spring is lifted in the nozzle according to the pressure of the liquid medicine, so that the number of the second spray holes participating in the work is adjusted, and the variable spraying is realized.
Drawings
FIG. 1 is a schematic view of a combination pressure and adaptive variable nozzle according to the present invention.
Fig. 2 is a sectional view of a spring in a natural state in a first variable rate nozzle of the present invention.
Fig. 3 is a cross-sectional view of a first variable rate nozzle of the present invention with a spring in a compressed state.
Fig. 4 is a sectional view of a spring in a natural state in a second variable nozzle of the present invention.
Fig. 5 is a cross-sectional view of a spring in a compressed state in a second variable rate nozzle of the present invention.
Fig. 6 is a control flow diagram of the present invention.
The reference numerals in the figures denote:
1. a first three-way joint; 2. a pressure sensor; 3. a second three-way joint; 4. a first solenoid valve; 5. a second solenoid valve; 6. a first variable nozzle; 61. a nozzle end cover; 611. a piston; 612. an exhaust hole; 613. an air inlet; 62. a first showerhead body; 621. a sleeve; 6211. a liquid flow hole; 622. a first nozzle hole; 623. a liquid inlet cavity; 624. a liquid spray chamber; 63. a connecting rod; 7. a second variable nozzle; 71. a nozzle; 711. a baffle plate; 712. a second nozzle hole; 72. a second showerhead body; 73. and connecting a nut.
Detailed Description
The invention will be described in further detail below with reference to the drawings and specific examples.
As shown in fig. 1 to 5, an embodiment of the air pressure and adaptive combined variable nozzle according to the present invention includes a first three-way joint 1, one end of the first three-way joint 1 is connected to a pressure sensor 2, one end of the first three-way joint is connected to a pipeline, the other end of the first three-way joint is connected to a second three-way joint 3, one end of the second three-way joint 3 is connected to a first electromagnetic valve 4, the other end of the second three-way joint is connected to a second electromagnetic valve 5, the first electromagnetic valve 4 is connected to a first variable nozzle 6, the second electromagnetic valve 5 is connected to a second variable nozzle 7, the first variable nozzle 6 includes a nozzle cap 61 and a first nozzle body 62, a piston 611 is disposed in the nozzle cap 61, one side of the piston 611 is provided with a spring, the other side of the piston 4 is fixedly connected to a sleeve 621 inserted in the first nozzle body 62, the bottom of the first nozzle body 62 is provided with a first orifice 621 for spraying liquid medicine, a plurality of liquid flow holes 6211 for liquid medicine to flow into and communicate with the orifice 621, the sleeve is provided with a plurality of liquid flow holes 6211 for liquid medicine to flow into the liquid medicine flowing into the sleeve, and a plurality of liquid medicine flow holes 712 for driving the second variable nozzle 71 to move up and down, so as to control the liquid medicine flow of the second variable nozzle 71, the second variable nozzle 71 is provided with a baffle plate 71, the second variable baffle plate 71 for controlling the second variable nozzle 71, the second variable nozzle 71 is provided in the second variable nozzle 71, the second variable nozzle 71. When the variable spray nozzle is used, liquid medicine enters the second three-way joint 3 from one end of the first three-way joint 1, the pressure sensor 2 monitors the pressure of the liquid medicine in real time, and controls the first electromagnetic valve 4 or the second electromagnetic valve 5 to be opened and closed according to the pressure of the liquid medicine, so that the first variable spray nozzle 6 or the second variable spray nozzle 7 is selected to work, when the first variable spray nozzle 6 works, air is filled into or pumped out of the spray nozzle end cover 61 through the air pump, the piston 611 drives the sleeve 321 to lift, so that the number of liquid flow holes 3211 participating in the work is adjusted, and variable spray is realized; when the second variable nozzle 7 works, the baffle 711 arranged on the spring automatically ascends and descends in the nozzle 71 according to the pressure of the liquid medicine, so that the number of the second spray holes 712 participating in the work is adjusted, and the variable spraying is realized.
In this embodiment, the fluid holes 6211 are formed on the sidewall of the sleeve 621 at regular intervals in a spiral shape, and the second nozzle holes 712 are formed on the sidewall of the nozzle 71 at regular intervals in a spiral shape. In the structure, the size, the distance and the number of the liquid flow holes 6211 and the second spray holes 712 are designed according to the preset liquid medicine pressure, and are respectively arranged on the sleeve 621 and the nozzle 71 in a spiral line, the spraying amount is linearly changed along with the liquid medicine pressure by adjusting the number of the liquid flow holes 6211 or the second spray holes 712 participating in the work, and a certain margin is left between the first or bottommost liquid flow hole 6211 and the top or the bottom of the sleeve 621, so that all the liquid flow holes 6211 do not participate in the work under the initial state, and when the liquid medicine pressure reaches a set value, all the liquid flow holes 6211 participate in the work; a certain margin is provided from the first second nozzle hole 712 or the bottommost second nozzle hole 712 to the top or bottom diameter of the nozzle 71, so that all the second nozzle holes 712 do not participate in the operation in the initial state, and when the pressure of the liquid medicine reaches a set value, all the second nozzle holes 712 participate in the operation.
In this embodiment, the nozzle end cap 61 is screwed into the inner cavity of the first nozzle body 62 and is connected to the inner cavity of the first nozzle body through a screw. In this structure, the connection between the nozzle end cover 61 and the first nozzle body 62 is further provided with a gasket for sealing, the installation is simple, the disassembly is convenient, in this embodiment, the nozzle end cover 61 is divided into an upper part and a lower part, and the spring, the piston 611 and the connecting rod 63 are welded and fixed after being installed.
In this embodiment, a connecting rod 63 is disposed between the piston 611 and the sleeve 621, one end of the connecting rod 63 is connected to the piston 611 by a bolt, and the other end of the connecting rod 63 passes through the bottom wall of the nozzle end cover 61 and is connected to the sleeve 621 by a thread. The structure is simple, the connection is firm, and when the piston 611 moves up and down in the nozzle end cover 61, the connecting rod 63 drives the sleeve 621 to ascend and descend.
In this embodiment, the top of the nozzle end cover 61 is provided with a plurality of air outlet holes 612, the sidewall of the nozzle end cover 61 is provided with an air inlet hole 613 for connecting with an air pump, and the air inlet hole 613 is disposed below the piston 611. In this structure, the air pump inflates or discharges air into the head cover 61 through the air inlet hole 613 to move the piston 611 up and down, and the air discharge hole 612 ensures that the air between the piston 611 and the top of the head cover 61 is rapidly discharged when the pressure of the liquid medicine is increased, so that the piston 611 responds rapidly.
In this embodiment, a liquid inlet for connecting with the first solenoid valve 4 is disposed on the side wall of the spray head body 62. In this structure, all through threaded connection between inlet and first solenoid valve 4, first solenoid valve 4 and the second three way connection 3, the junction all installs the gasket additional sealed.
In this embodiment, the sum of the areas of the flow holes 6211 is smaller than the cross-sectional areas of the liquid inlet cavity and the sleeve 623. This structural design makes the feed liquor flow be greater than play liquid flow in the first variable shower nozzle 6, guarantees that first variable shower nozzle 6 leads to the liquid medicine drippage to appear because of adjusting or variable in-process in the actual spraying process to influence the spraying effect.
In this embodiment, the inner cavities of the first nozzle body 62 are respectively configured as a liquid inlet cavity 623 and a liquid spraying cavity 624, and the sleeve 621 is embedded in the liquid spraying cavity 624. After entering the first variable spray head 6, the liquid medicine firstly enters the liquid inlet cavity 623, then enters the liquid spraying cavity 624 through the liquid flow holes 6211 on the sleeve 621 and then is sprayed out from the first spray holes 622.
In this embodiment, the piston 611 is provided with an O-ring for sealing, which is tightly attached to the sidewall of the inner cavity of the nozzle end cover 61, and the connecting rod 63 is provided with an O-ring for sealing at the insertion portion between the connecting rod 63 and the bottom wall of the nozzle end cover 61. In the structure, the O-shaped ring has a sealing effect.
In this embodiment, the first nozzle 622 is a tapered nozzle. The spraying is uniformly distributed, and the coverage area is large.
In this embodiment, the second variable nozzle 7 further includes a connection nut 73, a protruding ring abutting against the protruding ring at the bottom of the inner side of the connection nut 73 is formed at the top of the nozzle 71, and the second nozzle body 72 is in threaded connection with the connection nut 73 and presses the nozzle 71. The connection is firm and reliable, in the structure, a gasket is additionally arranged at the joint of the second spray head body 72 and the connecting nut 73 for preventing looseness and leakage, and an O-shaped ring seal is arranged at the joint of the second spray head body 72 and the spray nozzle 71.
In the present embodiment, the second nozzle hole 712 is provided as a tapered nozzle hole having a taper angle of 60 °. The spraying distribution is even, and the coverage area is wide.
In this embodiment, a liquid inlet for connecting with the second solenoid valve 5 is disposed on the side wall of the second spray head body 71. In this structure, all through threaded connection between inlet and second solenoid valve 5, second solenoid valve 5 and the second three way connection 3, the junction all installs the gasket additional sealed.
In this embodiment, the sum of the areas of the second nozzle holes 712 is smaller than the cross-sectional area of the inner cavity of the liquid inlet. This structural design makes the feed liquor flow be greater than play liquid flow in the second variable shower nozzle 7, guarantees that second variable shower nozzle 7 leads to the liquid medicine drippage to appear because of adjusting or variable in-process in the actual spraying process to influence the spraying effect.
In this embodiment, the baffle 711 is provided with an O-ring for sealing, which is tightly attached to the sidewall of the inner cavity of the nozzle 72. And an O-shaped ring is used for sealing and preventing leakage.
As shown in fig. 6, the method for controlling the air pressure and adaptive combined variable nozzle of the present invention, in which the air pressure and adaptive combined variable nozzle is connected to a single chip microcomputer and a liquid crystal display screen through a wire, comprises the following steps:
s1: opening a pipeline valve, monitoring the liquid medicine pressure in real time by the pressure sensor 2, transmitting data to the single chip microcomputer, and comparing the received data by the single chip microcomputer;
s2: when the liquid medicine pressure changes between 0.2Mpa and 0.4Mpa, the single chip microcomputer controls the first electromagnetic valve 4 to be opened, the second electromagnetic valve 5 is closed at the same time, and the liquid medicine enters the first variable nozzle 6;
s3: the singlechip controls the air pump to fill or pump air into or out of the inner cavity of the spray head end cover 61 of the first variable spray head 6, so that the piston 611 moves up and down, and the number of the liquid flow holes 6211 participating in the work is adjusted to realize variable spraying;
s4: when the pressure of the liquid medicine is changed between 0.4Mpa and 0.6Mpa, the singlechip controls the first electromagnetic valve 4 to be closed, and simultaneously the second electromagnetic valve 5 is opened, and the liquid medicine enters the second variable nozzle 7;
s5: a spring in the second variable nozzle 7 compresses or rebounds according to the pressure of the liquid medicine to drive the baffle 711 to move up and down, and the number of second spray holes 712 participating in spraying of the liquid medicine is adjusted to realize variable spraying;
s6: when the pressure of the liquid medicine is lower than 0.2Mpa or higher than 0.6Mpa, the singlechip controls the first electromagnetic valve 4 and the second electromagnetic valve 5 to be closed simultaneously, and controls the liquid crystal display screen to give an alarm to remind a worker to supplement the liquid medicine or check the rotating speed of the medicine pump.
The method comprises the steps that different types of variable nozzles are selected according to liquid medicine pressure to carry out spraying work, the pressure of liquid medicine is monitored in real time by a pressure sensor 2 and is transmitted to a single chip microcomputer, the single chip microcomputer compares numerical values, when the liquid medicine pressure is between 0.2mpa and 0.4mpa, the liquid medicine pressure is low, the single chip microcomputer controls a first variable nozzle 6 to work, at the moment, a first electromagnetic valve 4 is opened, a second electromagnetic valve 5 is closed, the single chip microcomputer controls an air pump to inflate or deflate so as to adjust the liquid medicine flow entering a liquid spraying cavity 624 of the first variable nozzle 6, variable spraying is achieved, when the liquid medicine pressure is between 0.4mpa and 0.6mpa, the single chip microcomputer controls a second variable nozzle 7 to work, at the moment, the first electromagnetic valve 4 is closed, the second electromagnetic valve 5 is opened, a baffle 711 on a spring in the second variable nozzle 7 automatically rises and falls according to the liquid medicine pressure change, the number of second nozzle 712 participating in the spraying work is adjusted, variable spraying is achieved, when the liquid medicine pressure is less than 0.2mpa, a liquid medicine is alarmed by a liquid medicine is added by a user, when the liquid medicine pressure is greater than 0.6mpa, the liquid medicine pressure is reminded, the user, the rotating speed of the liquid medicine pump is checked by a, and the liquid crystal display screen is checked.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make many possible variations and modifications to the disclosed solution, or modify equivalent embodiments using the teachings disclosed above, without departing from the scope of the solution. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention, unless the technical essence of the present invention departs from the content of the technical solution of the present invention.
Claims (16)
1. The utility model provides an atmospheric pressure and adaptive combination formula variable shower nozzle which characterized in that: the automatic spraying device comprises a first three-way joint (1), one end of the first three-way joint (1) is connected with a pressure sensor (2), one end of the first three-way joint is communicated with a pipeline, the other end of the first three-way joint is connected with a second three-way joint (3), one end of the second three-way joint (3) is connected with a first electromagnetic valve (4), the other end of the second three-way joint is connected with a second electromagnetic valve (5), the first electromagnetic valve (4) is connected with a first variable nozzle (6), the second electromagnetic valve (5) is connected with a second variable nozzle (7), the first variable nozzle (6) comprises a nozzle end cover (61) and a first nozzle body (62), a piston (611) is arranged in the nozzle end cover (61), one side of the piston (611) is provided with a spring, the other side of the piston (611) is fixedly connected with a sleeve (621) which is embedded in the first nozzle body (62), the bottom of the first nozzle body (62) is provided with a first nozzle hole (622) for spraying liquid medicine, the side wall of the sleeve (621) is provided with a plurality of liquid flow holes (11) for liquid medicine flowing into and communicating with the first nozzle hole (622), the first nozzle end cover (61) or the gas pump (6261) for controlling the quantity of the gas flowing into the second nozzle (71), and the second nozzle (71) for controlling the gas flowing up-up and-down movement of the second nozzle (71), a baffle (711) is arranged in the nozzle (71), a plurality of second spray holes (712) used for spraying liquid medicine are formed in the side wall of the nozzle (71), and a spring used for driving the baffle (711) to move up and down in the nozzle (71) according to the pressure of the liquid medicine to control the number of the second spray holes (712) participating in the liquid medicine spraying work so as to realize variable spraying is arranged between the baffle (711) and the bottom of the nozzle (71).
2. The air pressure and adaptive combined variable sprinkler of claim 1, wherein: the liquid flowing holes (6211) are arranged on the side wall of the sleeve (621) at intervals spirally, and the second spray holes (712) are arranged on the side wall of the nozzle (71) at intervals spirally.
3. The air pressure and adaptive combined variable sprinkler of claim 1, wherein: the spray head end cover (61) is screwed into the inner cavity of the first spray head body (62) and is in threaded connection with the first spray head body.
4. The air pressure and adaptive combined variable sprinkler of claim 1, wherein: a connecting rod (63) is arranged between the piston (611) and the sleeve (621), one end of the connecting rod (63) is connected with the piston (611) through a bolt, and the other end of the connecting rod (63) penetrates through the bottom wall of the spray head end cover (61) to be connected with the sleeve (621) through threads.
5. The combined pneumatic and adaptive variable nozzle of claim 4, wherein: the top of the spray head end cover (61) is provided with a plurality of exhaust holes (612), the side wall of the spray head end cover (61) is provided with an air inlet hole (613) used for being connected with an air pump, and the air inlet hole (613) is arranged below the piston (611).
6. The air pressure and adaptive combined variable sprinkler of claim 5, wherein: and a liquid inlet used for being connected with the first electromagnetic valve (4) is formed in the side wall of the first spray head body (62).
7. The combined pneumatic and adaptive variable nozzle of claim 6, wherein: the sum of the areas of the liquid flow holes (6211) is smaller than the cross-sectional area of the liquid inlet cavity and the cross-sectional area of the inner cavity of the sleeve (621).
8. The air pressure and adaptive combined variable sprinkler according to claim 4, wherein: the inner cavity of the first spray head body (62) is respectively provided with a liquid inlet cavity (623) and a liquid spraying cavity (624), and the sleeve (621) is embedded in the liquid spraying cavity (624).
9. The combined air pressure and adaptive variable sprinkler according to any one of claims 1-8, wherein: the piston (611) is provided with an O-shaped ring which is tightly attached to the side wall of the inner cavity of the spray head end cover (61) and used for sealing, and the connecting rod (63) is provided with the O-shaped ring used for sealing at the penetrating position of the connecting rod (63) and the bottom wall of the spray head end cover (61).
10. The combined air pressure and adaptive variable sprinkler according to any one of claims 1-8, wherein: the first nozzle hole (622) is provided as a tapered nozzle hole.
11. The air pressure and adaptive combined variable sprinkler of claim 2, wherein: second variable shower nozzle (7) still include coupling nut (73), nozzle (71) top shaping has the bulge loop with coupling nut (73) inboard bottom bulge loop butt, second shower nozzle body (72) and coupling nut (73) threaded connection compress tightly nozzle (71).
12. The air pressure and adaptive combined variable sprinkler of claim 11, wherein: the second spray hole (712) is arranged to be a conical spray hole, and the conical angle of the conical spray hole is set to be 60-120 degrees.
13. The air pressure and adaptive combined variable sprinkler of claim 12, wherein: and a liquid inlet used for being connected with the second electromagnetic valve (5) is formed in the side wall of the second spray head body (72).
14. The combined air pressure and adaptive variable nozzle of claim 13, wherein: the sum of the areas of the second jet holes (712) is smaller than the cross-sectional area of the inner cavity of the liquid inlet.
15. The combined air pressure and adaptive variable sprinkler according to any one of claims 11-14, wherein: and an O-shaped ring which is tightly attached to the side wall of the inner cavity of the nozzle (71) and used for sealing is arranged on the baffle plate (711).
16. The utility model provides an atmospheric pressure and self-adaptation combination formula variable shower nozzle control method, atmospheric pressure and self-adaptation combination formula variable shower nozzle pass through wire connection singlechip and liquid crystal display, its characterized in that: the method comprises the following steps:
s1: opening a pipeline valve, monitoring the liquid medicine pressure in real time by a pressure sensor (2), transmitting data to a single chip microcomputer, and comparing the received data by the single chip microcomputer;
s2: when the pressure of the liquid medicine is changed between 0.2Mpa and 0.4Mpa, the singlechip controls the first electromagnetic valve (4) to be opened, the second electromagnetic valve (5) is closed at the same time, and the liquid medicine enters the first variable nozzle (6);
s3: the singlechip controls the air pump to fill or pump air into or out of an inner cavity of a spray head end cover (61) of the first variable spray head (6), so that the piston (611) moves up and down, the number of liquid flow holes (6211) participating in work is adjusted, and variable spraying is realized;
s4: when the pressure of the liquid medicine is changed between 0.4Mpa and 0.6Mpa, the singlechip controls the first electromagnetic valve (4) to be closed, and simultaneously the second electromagnetic valve (5) is opened, and the liquid medicine enters the second variable nozzle (7);
s5: a spring in the second variable nozzle (7) compresses or rebounds according to the pressure of the liquid medicine to drive the baffle (711) to move up and down, and the number of second spray holes (712) which participate in spraying the liquid medicine is adjusted to realize variable spraying;
s6: when the liquid medicine pressure is lower than 0.2Mpa or higher than 0.6Mpa, the single chip microcomputer controls the first electromagnetic valve (4) and the second electromagnetic valve (5) to be closed simultaneously, and controls the liquid crystal display screen to give an alarm to remind a worker to supplement the liquid medicine or check the rotating speed of the medicine pump.
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| GB9710834D0 (en) * | 1997-05-27 | 1997-07-23 | Rawlings Matthew J H | Improvements in control valves |
| CA2262237A1 (en) * | 1999-02-15 | 2000-08-15 | Flexi-Coil Ltd. | Flow control system for sprayer nozzles |
| CN2629832Y (en) * | 2003-06-06 | 2004-08-04 | 中国农业大学 | Pressure type step variable spray head device |
| KR20140006230U (en) * | 2013-06-03 | 2014-12-11 | 전은수 | spraying nozzle device |
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| CN111683756A (en) * | 2019-04-29 | 2020-09-18 | 深圳市大疆创新科技有限公司 | Spray head device, spraying system, movable platform and spraying operation method thereof |
| US20220072569A1 (en) * | 2020-09-09 | 2022-03-10 | Spraying Systems Co. | Liquid dispensing system with pressurized air operated liquid control pistons |
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| GB9710834D0 (en) * | 1997-05-27 | 1997-07-23 | Rawlings Matthew J H | Improvements in control valves |
| CA2262237A1 (en) * | 1999-02-15 | 2000-08-15 | Flexi-Coil Ltd. | Flow control system for sprayer nozzles |
| CN2629832Y (en) * | 2003-06-06 | 2004-08-04 | 中国农业大学 | Pressure type step variable spray head device |
| KR20140006230U (en) * | 2013-06-03 | 2014-12-11 | 전은수 | spraying nozzle device |
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| CN115555142B (en) | 2024-06-25 |
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