CN113557931A

CN113557931A - Atomizing irrigation device for agricultural water-saving irrigation

Info

Publication number: CN113557931A
Application number: CN202110833815.8A
Authority: CN
Inventors: 代宇
Original assignee: Individual
Current assignee: Lianjiang Zhicheng Ecological Agriculture Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2021-10-29
Anticipated expiration: 2041-07-23
Also published as: CN113557931B

Abstract

The invention discloses an atomizing irrigation device for agricultural water-saving irrigation, which comprises a nozzle part and an impurity filtering part, wherein the nozzle part is provided with a nozzle hole; the impurity filtering part includes: the outer surface of the shell is provided with a liquid inlet port, a gas inlet port and an impurity discharge port; the first flow channel is positioned in the shell, the inlet end of the first flow channel is connected with the liquid inlet port, and the outlet end of the first flow channel is connected with the spray head part; the second flow channel is positioned in the shell, the inlet end of the second flow channel is connected with the air inlet port, and the outlet end of the second flow channel is connected with the nozzle part; a screen positioned in the first flow channel; the impurity collecting cavity is positioned on the upstream side of the filter screen and communicated with the first flow channel; the valve cavity is positioned below the impurity collecting cavity and communicated with the air inlet port, and the impurity discharge port is positioned at the bottom of the valve cavity; and a valve assembly disposed in the valve chamber and naturally in an open state, the valve assembly being configured to transition to a closed state when a gas pressure of gas flowing from the gas inlet port into the valve chamber exceeds a predetermined value. The invention not only has the function of filtering impurities, but also has the function of automatically discharging the filtered impurities.

Description

Atomizing irrigation device for agricultural water-saving irrigation

Technical Field

The invention relates to the field of agricultural irrigation, in particular to an atomizing irrigation device for agricultural water-saving irrigation.

Background

The atomization irrigation is an irrigation technique newly developed in recent years, and is a method for delivering water pressurized at the head part to the field through a low-pressure pipe network and spraying the water into mist through a special atomization nozzle for irrigation. The atomizing irrigation has the advantages of saving water, regulating microclimate among crop plants and the like. When the crops are in the cloud cover during the fog irrigation, the water can be directly absorbed by the leaves, and the stress resistance of the crops is enhanced. Especially in dry and high-temperature seasons, the fog irrigation can improve the inter-plant humidity, reduce the inter-plant and leaf surface temperature and increase the relative water content of leaves, thereby reducing or eliminating the phenomenon of afternoon nap of crop photosynthesis and leading the crops to obtain high yield.

Because in some remote areas, lack the water supply pipe network, consequently atomizing irrigation usually can get the water on the spot, adopts groundwater as the water source, and because the groundwater that directly acquires is unfiltered, consequently the content of impurity such as fine sand is more, so under the condition of long-term irrigation, impurity in the shower nozzle can progressively accumulate, and is more and more, and then causes the jam to the shower nozzle, leads to the unable normal play water of shower nozzle.

Therefore, it is necessary to improve the existing atomizing irrigation device, so that water can be filtered, and impurities cannot enter the inside of the spray head, thereby avoiding the condition that the spray head is blocked by the impurities. In addition, considering that if the filtered impurities are always located inside the irrigation device, workers need to enter the field periodically to clean the filtered impurities in the irrigation device, which is troublesome, the inventor considers that the improved irrigation device also has the function of automatic impurity removal, namely, the impurities can be automatically discharged from the irrigation device without manual cleaning.

Disclosure of Invention

The invention aims to provide an atomizing irrigation device for agricultural water-saving irrigation, which not only has the function of filtering impurities so as to avoid blockage caused by the impurities entering a spray head, but also has the function of automatically discharging the filtered impurities out of the atomizing irrigation device.

In order to achieve the purpose, the invention provides an atomizing irrigation device for agricultural water-saving irrigation, which comprises a nozzle part, an impurity filtering part and a water spraying part, wherein the nozzle part is provided with a liquid channel and a gas channel;

the outer surface of the shell is provided with a liquid inlet port, a gas inlet port and an impurity discharge port;

the first flow channel is arranged in the shell, the inlet end of the first flow channel is connected with the liquid inlet port, and the outlet end of the first flow channel is connected with the liquid channel of the spray head part;

the second flow passage is also arranged in the shell, the inlet end of the second flow passage is connected with the air inlet port, and the outlet end of the second flow passage is connected with the gas channel of the nozzle part;

the filter screen is arranged in the first flow channel, and the filter screen can filter all liquid flowing from the inlet end of the first flow channel to the outlet end of the first flow channel;

the impurity collecting cavity is positioned on the upstream side of the filter screen and communicated with the first flow channel, and the impurity collecting cavity is used for collecting impurities filtered by the filter screen;

the valve cavity is positioned below the impurity collecting cavity, one end of the valve cavity extends to the outer surface of the shell and is communicated with the air inlet port, and the impurity discharge port is positioned at the bottom of the valve cavity;

the valve assembly is disposed in the valve chamber, and is in an open state in which the impurity collecting chamber communicates with the impurity discharging port when the valve assembly is in a natural state, and is in a closed state in which the impurity collecting chamber is blocked from communicating with the impurity discharging port when a gas pressure formed by gas flowing into the valve chamber from the gas inlet port exceeds a predetermined value.

Further, the first flow channel comprises a first axial section, a first oblique section, a second axial section, a second oblique section and a third axial section;

the first axial section is arranged along the central axis of the shell, the bottom of the first axial section is connected with the liquid inlet port, and the top of the first axial section extends to the middle part in the shell;

the number of the first oblique sections is two, the two first oblique sections are respectively communicated with two sides of the top of the first axial section, and the oblique directions of the two first oblique sections are both downwards inclined from inside to outside;

the number of the second axial sections is also two, and the two second axial sections are respectively positioned on two sides in the shell and are respectively connected with the two first oblique sections;

the number of the second inclined sections is also two, the two second inclined sections are respectively connected to the tops of the two second axial sections, the inclined directions of the two second inclined sections are inclined from bottom to top in the direction close to the central axis of the shell, and meanwhile, the tops of the two second inclined sections are converged together;

the third axial section is arranged along the central axis of the shell, the bottom of the third axial section is simultaneously connected with the tops of the two second inclined sections, and the tops of the third axial section extend to the top of the shell and are communicated with the liquid channel of the spray head part.

Furthermore, the number of the filter screens is two, and the two filter screens are respectively arranged at the intersection of the two second axial sections and the corresponding second oblique sections.

Furthermore, the nozzle part is provided with one liquid channel and two gas channels, wherein the two gas channels are respectively positioned at two sides of the liquid channel, an arc-shaped channel is formed at the top of the liquid channel and the top of the gas channel, the lowest point in the middle of the arc-shaped channel is positioned above the liquid channel, the highest points at two sides are respectively positioned above the two gas channels, and the two sides of the arc-shaped channel are respectively provided with a nozzle.

Furthermore, the number of the second flow channels is two, the lower half sections of the two second flow channels are respectively positioned beside the two second oblique sections in the shell, the upper half sections of the two second flow channels are respectively positioned at two sides of the third axial section, and meanwhile, the upper half sections of the two second flow channels are respectively communicated with the two gas channels in the nozzle part;

the air inlet port is connected with one of the second flow passages, the inlet end of the other second flow passage is connected with an air inlet joint, and the air inlet joint is connected with the air inlet port through an air pipe.

Furthermore, the number of the impurity collecting cavities is two, and the two impurity collecting cavities are respectively communicated below the two second axial sections;

the number of the valve cavities is also two, and the two valve cavities are respectively positioned below the two impurity collecting cavities; the valve cavity comprises a first cavity and a second cavity, wherein the first cavity is communicated with the impurity collecting cavity and the impurity discharging port, the second cavity is connected with the first cavity into a whole and hidden in the shell, one end of the second cavity, far away from the first cavity, extends to the outer surface of the shell and is communicated with a connecting nozzle arranged on the outer surface of the shell, and the connecting nozzle is connected with the air inlet port through an air pipe.

Further, the valve component comprises a plug body and a tension spring; the plug body is arranged in the valve cavity, and the plug body can be switched between a first cavity body and a second cavity body of the valve cavity; one end of the tension spring is fixed on the side wall of one side, far away from the first cavity, in the second cavity, and the other end of the tension spring is fixed with the plug body;

when the spring is in a natural state, the plug body is hidden in the second cavity under the action of the tension spring; when the gas pressure formed by the gas entering the first cavity from the connecting nozzle exceeds a preset value, the plug body is positioned in the first cavity under the action of the gas pressure, and the plug body blocks the communication between the impurity collecting cavity and the impurity discharging port.

Furthermore, the impurity filtering part also comprises a sealing cover which is detachably sealed at the bottom of the impurity discharge port.

Further, the atomizing irrigation device further comprises a locking nut, and the locking nut is used for fixing the spraying head part and the impurity filtering part into a whole.

The invention has the beneficial effects that: according to the invention, a part of air pressure passing through the air inlet port is divided to control the movement of the plug body, so that the plug body can seal the bottom of the impurity collecting cavity during ventilation, the plug body can automatically open the bottom of the impurity collecting cavity during air cut-off, and thus, liquid leakage is avoided when water flows through the first flow channel during ventilation, filtered impurities can be temporarily stored in the impurity collecting cavity, and impurities in the impurity collecting cavity can automatically fall from the impurity outlet during air cut-off; therefore, the technical problem to be solved by the invention is solved, namely, after the atomization irrigation device is improved, the atomization irrigation device not only has the function of filtering impurities, but also has the function of automatically discharging the filtered impurities out of the atomization irrigation device, so that after the atomization irrigation device is adopted, the impurities in the atomization irrigation device do not need to be manually cleaned.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of area A of FIG. 1;

FIG. 3 is an enlarged view of the impurity filtering portion of FIG. 1;

FIG. 4 is an enlarged view of area B of FIG. 3;

FIG. 5 is an enlarged view of area C of FIG. 3;

FIG. 6 is an enlarged view of region D of FIG. 3;

FIG. 7 is a perspective view of the plug body of the present invention;

FIG. 8 is a schematic view of the liquid and gas venting of FIG. 3 with the closure removed, showing the path of water flow in solid lines and the path of gas flow in dashed lines;

fig. 9 is an enlarged view of region E in fig. 8.

Detailed Description

The present invention will be described in further detail with reference to specific examples, but the embodiments of the present invention are not limited thereto.

Referring to fig. 1 to 7, the present invention provides an atomized irrigation device for agricultural water-saving irrigation, which comprises a nozzle part 1 and an impurity filtering part 2.

Referring to fig. 1, the inside of the nozzle part 1 is provided with one liquid channel 11 and two gas channels 12, wherein the two gas channels 12 are respectively located at both sides of the liquid channel 11, and the liquid channel 11 and the gas channels 12 both extend along the axial direction of the nozzle part 1. Referring to fig. 2, an arc-shaped channel 13 is further formed at the top of the liquid channel 11 and the gas channel 12, the lowest point of the middle of the arc-shaped channel 13 is located above the liquid channel 11, the highest points of the two sides are respectively located above the two gas channels 12, the two sides of the arc-shaped channel 13 are respectively provided with a nozzle 14, and the nozzle 14 is arranged on the outer wall of the nozzle part 1. Spray nozzle part 1 during operation, liquid channel 11 and gas channel 12 supply rivers and air current respectively simultaneously, the rivers can divide into two strands after getting into arc passageway 13 from liquid channel 11, then flow to both sides along arc passageway 13's both wings respectively, the in-process flows, the gas that gets into arc passageway 13 from gas channel 12 can lead to the fact the impact to rivers and converge with rivers, and then gas-liquid mixture, gas-liquid mixture finally can be with vaporific form from spout 14 effluvium, thereby realize the atomizing irrigation, reach the purpose of water conservation.

Referring to fig. 3, the foreign substance filtering part 2 includes a housing 21, a first flow passage 22, a second flow passage 23, a screen 24, a foreign substance collecting chamber 25, a valve chamber 26, and a valve assembly 27.

The housing 21 has an external surface provided with an inlet port 21a, an inlet port 21b, and an impurity discharge port 21 c.

The first flow path 22 is disposed in the housing 21, and an inlet end of the first flow path 22 is connected to the liquid inlet port 21a, and an outlet end thereof is connected to the liquid passage 11 of the nozzle portion 1. The first flow channel 22 is a channel through which water flows, and after entering the first flow channel 22 from the inlet port 21a, the water flows along the first flow channel 22 and then flows out from the outlet end of the first flow channel 22 to enter the liquid channel 11 of the shower head part 1.

The second flow passage 23 is also arranged in the housing 21, and the inlet end of the second flow passage 23 is connected to the gas inlet port 21b, and the outlet end is connected to the gas passage 12 of the nozzle portion 1. The second flow channel 23 is a channel through which gas flows, and after entering the second flow channel 23 from the gas inlet port 21b, the gas flows along the second flow channel 23, and then flows out from the outlet end of the second flow channel 23 to enter the gas channel 12 of the shower head part 1.

The screen 24 is arranged in the first flow channel 22, and the screen 24 is capable of filtering all water flowing from the inlet end of the first flow channel 22 to the outlet end of the first flow channel 22.

The impurity collecting chamber 25 is located at an upstream side of the screen 24 and communicates with the first flow passage 22, and the impurity collecting chamber 25 is used for collecting impurities filtered by the screen 24. Wherein the upstream side is determined according to the flowing direction of the water flow.

The valve chamber 26 is located below the impurity collecting chamber 25, and one end of the valve chamber 26 extends to the outer surface of the housing 21 and communicates with the gas inlet port 21b, that is, when gas is supplied to the second flow passage 23 through the gas inlet port 21b, since the gas inlet port 21b communicates with the valve chamber 26, a part of the gas enters the valve chamber 26. In addition, the impurity discharge port 21c is located at the bottom of the valve chamber 26.

The valve assembly 27 is disposed in the valve chamber 26 and can control communication or blocking of the impurity collecting chamber 25 with the impurity discharge port 21c by its own movement in the valve chamber 26. When the valve assembly 27 is in the natural state, the valve assembly 27 is in the open state, and the impurity collecting chamber 25 is communicated with the impurity discharging port 21c, and when the gas pressure formed by the gas flowing into the valve chamber 26 from the gas inlet port 21b exceeds a predetermined value, the valve assembly 27 is switched to the closed state, and the communication between the impurity collecting chamber 25 and the impurity discharging port 21c is blocked.

As a preferable scheme, referring to fig. 2, an atomizing net 15 is further disposed at the nozzle opening 14 of the nozzle part 1, and the atomizing net 15 is a sheet with a plurality of holes, which can further enhance the atomization degree of the sprayed gas-liquid mixture.

Referring to fig. 1, a first connecting plate 16 is further disposed on the outer wall of the liquid channel 11 to firmly fix the liquid channel 11 inside the nozzle part 1, wherein the portion of the first connecting plate 16 inside the gas channel 12 has a through hole axially therethrough so that the gas passes through the connecting plate 16.

As a preferable scheme, in order to ensure that the foreign substances filtered by the filter net 24 do not fall back to the inlet port 21a, it is necessary to design the first flow channel 22 to be in a bent form. Specifically, the method comprises the following steps:

referring to fig. 3, the first flow passage 22 includes a first axial section 221, two first diagonal sections 222, two second axial sections 223, two second diagonal sections 224, and a third axial section 225;

the first axial section 221 is arranged along the central axis of the casing 21, and the bottom of the first axial section is connected to the liquid inlet port 21a, and the top of the first axial section extends to the middle inside the casing 21;

the two first oblique sections 222 are respectively communicated with two sides of the top of the first axial section 221, and the oblique directions of the two first oblique sections 222 are both downward inclined from inside to outside;

the two second axial sections 223 are respectively located at two sides in the housing 21 and are respectively connected with the two first oblique sections 222;

the two second inclined sections 224 are respectively connected to the tops of the two second axial sections 223, the inclined directions of the two second inclined sections 224 are inclined from bottom to top in the direction close to the central axis of the shell 21, and meanwhile, the tops of the two second inclined sections 224 are converged together;

the third axial section 225 is arranged along the central axis of the housing 21, and the bottom of the third axial section is connected to the tops of the two second inclined sections 224 at the same time, and the tops of the third axial section extend to the top of the housing 21 and are communicated with the liquid channel 11 of the nozzle part 1;

the number of the filter screens 24 is two, and the two filter screens 24 are respectively arranged at the intersection of the two second axial sections 223 and the corresponding second inclined sections 224;

the number of the impurity collecting cavities 25 is two, and the two impurity collecting cavities 25 are respectively communicated below the two second axial sections 223;

therefore, after the water flow enters the first flow channel 22 and flows to the top of the first axial section 221, the water flow is divided into two parts, and flows along the first oblique section 222, the second axial section 223 and the second oblique section 224 on the two sides respectively, and then is converged into one part at the top of the two second oblique sections 224, and then continues to flow along the third axial section 225, and finally flows into the liquid channel 11 of the shower head part 1. Wherein impurities such as gravel, etc. that are stopped by the screen 22 will settle by gravity into the impurity collecting chamber 25 below the second axial section 223.

Based on the above technical solution, more specifically, referring to fig. 3, the number of the valve cavities 26 is also two, and the two valve cavities 26 are respectively located below the two impurity collecting cavities 25. Further, referring to fig. 6 and 9, the valve chamber 26 includes a first chamber 261 and a second chamber 262, wherein the first chamber 261 is communicated with the impurity collecting chamber 25 and the impurity discharging port 21c, the second chamber 262 is connected with the first chamber 261 and hidden in the housing 21, and an end of the second chamber 262 far from the first chamber 261 extends to an outer surface of the housing 21 and is communicated with a connection nozzle 21e installed on the outer surface of the housing 21, and the connection nozzle 21e is connected with the air inlet port 21b through an air pipe 28, see fig. 3.

Further, referring to fig. 3, the number of the second flow channels 23 is two, the lower half sections of the two second flow channels 23 are respectively located beside the two second oblique sections 224 in the housing 21, the upper half sections of the two second flow channels 23 are respectively located at two sides of the third axial section 225, and meanwhile, the upper half sections of the two second flow channels 23 are respectively communicated with the two gas channels 12 in the nozzle part 1; the second flow channel 23 is separated from the second oblique section 224 and the third axial section 225 of the first flow channel 22 by the partition 21 f; and a second connecting plate 21g is further provided in the upper half section of the second flow channel 23 so that the partition plate 21f of the upper half section of the second flow channel 23 can be stably fixed with the inner wall of the housing 21, and the second connecting plate 21g is provided with a through hole penetrating axially so that gas can pass through the second connecting plate 21 g.

Further, referring to fig. 3 and 4, the air inlet port 21b is connected to one of the second flow passages 23, and an inlet end of the other second flow passage 23 is connected to an air inlet connector 21d, the air inlet connector 21d is also disposed on the outer surface of the housing 21 (see fig. 5), and the air inlet connector 21d is also connected to the air inlet port 21b through an air pipe 28.

Since the number of the connection nozzles 21e is two, and one of the connection nozzles 21e is located below the air inlet port 21b, and the other connection nozzle 21e is located below the air inlet joint 21d, in order to communicate both of the connection nozzles 21e with the air inlet port 21b and also to communicate the air inlet joint 21d with the air inlet port 21b, the four connection nozzles can be connected in series by the air pipe 28, see fig. 3. When the air inlet port 21b is filled with air, both the air inlet joint 21d and the two connection nozzles 21e are filled with air.

As a preferred solution, referring to fig. 6 and 9, the valve assembly 27 includes a plug 271 and a tension spring 272. The plug body 271 is disposed in the valve chamber 26, and the plug body 271 is switchable between the first cavity 261 and the second cavity 262 of the valve chamber 26. One end of the tension spring 272 is fixed on the side wall of the second cavity 262 far away from the first cavity 261, and the other end of the tension spring 272 is fixed with the plug 271. When the spring 272 is in a natural state, the plug body 271 is hidden in the second chamber 262 by the action of the spring 272, and the impurity collecting chamber 25 is communicated with the impurity discharging port 21c, see fig. 6. When the pressure of the gas entering the first cavity 261 from the connection nozzle 21e exceeds a predetermined value, the plug body 271 is pushed by the pressure of the gas to move into the first cavity 261, and the plug body 271 blocks the communication between the impurity collecting chamber 25 and the impurity discharging port 21c, as shown in fig. 9. The predetermined value is determined by the physical property of the tension spring 272, the volume of the valve cavity 26, the moving distance, and other factors, when the air pressure exceeds the predetermined value, the tension spring 272 is pulled to the longest, the acting force of the air pressure on the plug body 271 is greater than the elastic restoring force of the tension spring 272, and the plug body 271 is stably abutted against the first cavity 261.

More specifically, referring to fig. 7, the plug body 271 is a hollow cubic structure, and the cubic structure is composed of only five faces, one of which is missing, and the tension spring 272 is disposed in the inner cavity of the plug body 271 and connected to the inner wall of the front face of the plug body 271.

In order to ensure the sealing performance of the plug body 271, a circle of sealing rings 273 is respectively arranged on the top surface, the bottom surface, and the left and right side surfaces of the plug body 271, as shown in fig. 7. Moreover, when the plug 271 is located in the first cavity 261, the four sealing rings 273 can be respectively tightly attached to the peripheral wall surfaces of the first cavity 261, so as to achieve the sealing effect, so as to prevent the water flow in the impurity collecting cavity 25 from falling, and simultaneously prevent the air pressure in the second cavity 262 and the first cavity 261 from leaking, as shown in fig. 9; when the plug 271 is located in the second cavity 262, the four sealing rings 273 can be tightly attached to the peripheral wall of the second cavity 262, so as to achieve the sealing effect, so as to prevent the air pressure in the second cavity 262 from leaking, as shown in fig. 6.

As a preferable mode, referring to fig. 3, the impurity filtering part 2 further includes a cover 29, and the cover 29 is detachably closed on the bottom of the impurity discharging port 21c, for example, the cover 29 is screwed on the bottom of the impurity discharging port 21c by means of screw.

As a preferable scheme, referring to fig. 1, the atomized irrigation device further comprises a locking nut 3, wherein the locking nut 3 is used for connecting the spray head part 1 and the impurity filtering part 2 into a whole; when in connection, a corresponding sealing sheet can be placed between the impurity filtering part 2 and the nozzle part 1, then the nozzle part 1 is butted with the impurity filtering part 2, during the butting, the gas channel 12 of the nozzle part 1 is aligned with the second flow channel 23 of the impurity filtering part 2, meanwhile, the liquid channel 11 of the nozzle part 1 is aligned with the first flow channel 22 of the impurity filtering part 2, then the locking nut 3 is screwed, so that the nozzle part 1 and the impurity filtering part 2 are tightly connected together and the sealing sheet is tightly pressed, and the purposes of no liquid leakage and no gas leakage in connection are achieved.

The using mode and the working principle of the invention are as follows:

under the condition that the nozzle part 1 and the impurity filtering part 2 are connected through the locking nut 3; first, the liquid inlet port 21a of the impurity filtering part 2 is connected to a water supply pipeline capable of supplying water flow at a certain pressure, and then the gas inlet port 21b is connected to a gas supply pipeline capable of supplying gas flow at a certain pressure, and then the cap 29 closing the two impurity discharge ports 21c is unscrewed to open the bottoms of the impurity discharge ports 21 c;

then, during irrigation, the valve of the water supply pipeline and the valve of the gas supply pipeline are opened simultaneously, the water supply pipeline supplies water to the first flow channel 22 through the liquid inlet port 21a, and the gas supply pipeline supplies gas to one of the second flow channels 23 through the gas inlet port 21 b; meanwhile, since the air inlet port 21b is connected to the air inlet connector 21d and the two connecting nozzles 21e through the air tube 28, the air will enter into the other second flow channel 23 through the air inlet connector 21d, and will enter into the second cavities 262 of the two valve cavities 26 through the two connecting nozzles 21e (the flow path of the air can be seen as the dotted arrow in fig. 8), when the air pressure formed by the air entering into the second cavity 262 reaches a certain degree, the air pressure will overcome the force of the tension spring 272 and then push the plug body 271 to move into the first cavity 261, and as the air pressure further increases, the moving distance of the plug body 271 will become larger and larger, until the air pressure exceeds a predetermined value, the plug body 271 will completely move into the first cavity 261, and at this time, the plug body 271 will block the communication between the impurity collecting cavity 25 and the impurity discharging port 21c, so that the water flow in the first flow channel 22 will not leak from the impurity discharging port 21c, the impurities in the water flow will be filtered out by the filter screen 24 along the path indicated by the solid arrows in fig. 8, that is, along the paths of the first axial section 221, the first oblique section 222, the second axial section 223, the second oblique section 224 and the third axial section 225 in sequence, wherein during the water flow entering the second oblique section 224 from the second axial section 223, the impurities in the water flow, such as gravel, gravel and the like, will be settled into the impurity collecting chamber 25 below under the action of gravity, and at this time, because the plug body 271 is sealed at the bottom of the impurity collecting chamber 25, the impurities in the impurity collecting chamber 25 will not fall out; when flowing out from the top of the impurity filtering part 2, water flow and air flow respectively enter a liquid channel 11 and two air channels 12 of the spray head part 1, then respectively flow through the liquid channel 11 and the air channels 12, then enter an arc-shaped channel 13 above, finally impact the water flow by air to form an air-liquid mixture, and then the air-pressure mixture is sprayed out from a spray opening 14 in a mist form;

when stopping irrigation, close the valve of water supply pipeline and the valve of air supply pipeline simultaneously, at this moment, not only first flow passage 22, the rivers in the second flow passage 23, the air current can stop, and because valve chamber 26 is the intercommunication with inlet port 21b, consequently, valve chamber 26 can stop admitting air, the atmospheric pressure in the valve chamber 26 can reduce, so extension spring 272 under the effect of self elasticity restoring force, can drive cock body 271 and retract to second cavity 262 in to impurity collection chamber 25 again communicates with impurity discharge port 21c, therefore impurity in the impurity collection chamber 25 can drop out from impurity discharge port 21c under the effect of gravity.

It can be seen that, the present invention divides a part of the air pressure of the air supply pipeline for controlling the movement of the plug body 271, so that the plug body 271 can seal the bottom of the impurity collecting cavity 25 during ventilation, and the plug body 271 can automatically open the bottom of the impurity collecting cavity 25 during air cut-off, thereby achieving the purposes of no leakage of water when water flows through the first flow channel 22 during ventilation, temporary storage of filtered impurities in the impurity collecting cavity 25, and automatic discharge of impurities from the impurity collecting cavity 25 during air cut-off.

Therefore, after the atomization irrigation device is improved, the technical problem to be solved by the invention is realized, namely, the atomization irrigation device not only has the function of filtering impurities so as to avoid the impurities from entering the nozzle part 1 to cause blockage, but also has the function of automatically discharging the filtered impurities, and the atomization irrigation device does not need to be manually opened to clean the internal impurities.

Another way of use of the invention:

when the device is used for ordinary irrigation instead of atomization irrigation, namely only water flow needs to be introduced into the device, and gas does not need to be introduced, the air inlet port 21b can be closed, the two impurity discharge ports 21c are closed by the sealing cover 29, then the liquid inlet port 21a is connected with a water supply pipeline, and then a valve of the water supply pipeline is opened; when the water flow enters the first flow passage 22 of the impurity filtering part 2 and flows along the first flow passage 22, the impurities filtered by the filter net 24 are settled in the impurity collecting chamber 25, then continuously fall to the impurity discharge port 21c and are accumulated in the impurity discharge port 21c, when the impurities are accumulated to a certain degree, the irrigation is stopped, the cover 29 is unscrewed, and the impurities automatically fall out.

It should be noted that: in this way, the impurities cannot be discharged automatically, and the impurities can fall off only after the cover 29 is unscrewed manually.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An atomizing irrigation device for agricultural water-saving irrigation, which comprises a nozzle part (1), wherein the nozzle part (1) is provided with a liquid channel (11) and a gas channel (12), and is characterized by further comprising an impurity filtering part (2), wherein the impurity filtering part (2) comprises a shell (21), a first flow channel (22), a second flow channel (23), a filter screen (24), an impurity collecting cavity (25), a valve cavity (26) and a valve component (27);

the outer surface of the shell (21) is provided with a liquid inlet port (21a), a gas inlet port (21b) and an impurity discharge port (21 c);

the first flow passage (22) is arranged in the shell (21), the inlet end of the first flow passage (22) is connected with the liquid inlet port (21a), and the outlet end of the first flow passage is connected with the liquid channel (11) of the spray head part (1);

the second flow passage (23) is also arranged in the shell (21), the inlet end of the second flow passage (23) is connected with the air inlet port (21b), and the outlet end of the second flow passage is connected with the gas channel (12) of the nozzle part (1);

the screen (24) is arranged in the first flow channel (22), the screen (24) being capable of filtering all liquid flowing from the inlet end of the first flow channel (22) to the outlet end of the first flow channel (22);

the impurity collecting cavity (25) is positioned at the upstream side of the filter screen (24) and is communicated with the first flow passage (22), and the impurity collecting cavity (25) is used for collecting impurities filtered by the filter screen (24);

the valve cavity (26) is positioned below the impurity collecting cavity (25), one end of the valve cavity (26) extends to the outer surface of the shell (21) and is communicated with the air inlet port (21b), and the impurity discharge port (21c) is positioned at the bottom of the valve cavity (26);

the valve assembly (27) is disposed in the valve chamber (26), and when the valve assembly (27) is in a natural state, the valve assembly (27) is in an open state in which the impurity collecting chamber (25) communicates with the impurity discharge port (21c), and when a gas pressure formed by gas flowing into the valve chamber (26) from the gas inlet port (21b) exceeds a predetermined value, the valve assembly (27) is in a closed state in which communication of the impurity collecting chamber (25) with the impurity discharge port (21c) is blocked.

2. An atomiser irrigation device for water-saving irrigation of agriculture according to claim 1, characterised in that the first flow channel (22) comprises a first axial section (221), a first angled section (222), a second axial section (223), a second angled section (224) and a third axial section (225);

the first axial section (221) is arranged along the central axis of the shell (21), the bottom of the first axial section is connected with the liquid inlet port (21a), and the top of the first axial section extends to the middle in the shell (21);

the number of the first inclined sections (222) is two, the two first inclined sections (222) are respectively communicated with two sides of the top of the first axial section (221), and the inclined directions of the two first inclined sections (222) are both inclined downwards from inside to outside;

the number of the second axial sections (223) is also two, and the two second axial sections (223) are respectively positioned on two sides in the shell (21) and are respectively connected with the two first inclined sections (222);

the number of the second inclined sections (224) is also two, the two second inclined sections (224) are respectively connected to the tops of the two second axial sections (223), the inclined directions of the two second inclined sections (224) are inclined from bottom to top in the direction close to the central axis of the shell (21), and meanwhile, the tops of the two second inclined sections (224) are converged together;

the third axial section (225) is arranged along the central axis of the shell (21), the bottom of the third axial section is simultaneously connected with the tops of the two second inclined sections (224), and the tops of the third axial section extend to the top of the shell (21) and are communicated with the liquid channel (11) of the spray head part (1).

3. Atomizing irrigation device for agricultural water-saving irrigation according to claim 2, characterized in that said number of sieves (24) is two, two sieves (24) being respectively arranged at the intersection of two second axial segments (223) and respective second inclined segments (224).

4. The atomizing irrigation device for agricultural water-saving irrigation according to claim 3, characterized in that the nozzle part (1) is provided with one said liquid channel (11) and two said gas channels (12), wherein the two gas channels (12) are respectively located at two sides of the liquid channel (11), the tops of the liquid channel (11) and the gas channels (12) are formed with an arc-shaped channel (13), the lowest point of the middle part of the arc-shaped channel (13) is located above the liquid channel (11), the highest points of the two sides are respectively located above the two said gas channels (12), and the two sides of the arc-shaped channel (13) are respectively provided with one nozzle (14).

5. The atomizing irrigation device for agricultural water-saving irrigation according to claim 4, characterized in that the number of the second flow channels (23) is two, the lower half sections of the two second flow channels (23) are respectively located beside the two second inclined sections (224) in the housing (21), the upper half sections of the two second flow channels are respectively located on both sides of the third axial section (225), and meanwhile, the upper half sections of the two second flow channels (23) are respectively communicated with the two gas channels (12) in the nozzle part (1);

the air inlet port (21b) is connected with one of the second flow passages (23), the inlet end of the other second flow passage (23) is connected with an air inlet joint (21d), and the air inlet joint (21d) is connected with the air inlet port (21b) through an air pipe (28).

6. The atomizing irrigation device for agricultural water-saving irrigation according to claim 3, characterized in that the number of the impurity collecting cavities (25) is two, and the two impurity collecting cavities (25) are respectively communicated below the two second axial sections (223);

the number of the valve cavities (26) is also two, and the two valve cavities (26) are respectively positioned below the two impurity collecting cavities (25); the valve cavity (26) comprises a first cavity body (261) and a second cavity body (262), wherein the first cavity body (261) is communicated with the impurity collecting cavity (25) and the impurity discharging port (21c) at the same time, the second cavity body (262) is connected with the first cavity body (261) into a whole and hidden in the shell (21), one end, far away from the first cavity body (261), of the second cavity body (262) extends to the outer surface of the shell (21) and is communicated with a connecting nozzle (21e) installed on the outer surface of the shell (21), and the connecting nozzle (21e) is connected with the air inlet port (21b) through an air pipe (28).

7. The atomizing irrigation device for agricultural water-saving irrigation according to claim 6, characterized in that said valve assembly (27) comprises a plug body (271) and a tension spring (272); the plug body (271) is arranged in the valve cavity (26), and the plug body (271) can be switched between a first cavity body (261) and a second cavity body (262) of the valve cavity (26); one end of the tension spring (272) is fixed on the side wall of one side, far away from the first cavity (261), in the second cavity (262), and the other end of the tension spring (272) is fixed with the plug body (271);

when the spring (272) is in a natural state, the plug body (271) is hidden in the second cavity (262) under the action of the tension spring (272); when the gas pressure formed by the gas entering the first cavity (261) from the connecting nozzle (21e) exceeds a predetermined value, the plug body (271) is positioned in the first cavity (261) under the action of the gas pressure, and the plug body (271) blocks the communication between the impurity collecting cavity (25) and the impurity discharge port (21 c).

8. Atomizing irrigation device for agricultural water-saving irrigation according to any one of claims 1 to 7, characterized in that said impurity filtering portion (2) further comprises a cover (29), said cover (29) being removably closed to the bottom of said impurity discharge port (21 c).

9. The irrigated device according to any one of claims 1 to 7, further comprising a locking nut (3), wherein the locking nut (3) is used for fixing the nozzle part (1) and the impurity filtering part (2) into a whole.