An irrigation sprinkler head

Abstract

The present invention relates to the field of agricultural irrigation technology, and specifically to an irrigation sprinkler head, comprising a sprinkler head mechanism; the sprinkler head mechanism comprises a nozzle; the nozzle comprises an outer shell, a tongue, a heating element and two symmetrically arranged and spaced-apart deformation parts with a two-way shape memory effect, the outer shell is a narrow-upper-wide-lower structure and is hollow inside, the deformation part comprises a long end and a short end, the long end is connected to the bottom of the inner wall of the outer shell, and the short end is connected to the upper edge of the outer shell; the tongue is arranged between the two deformation parts and is a spindle-shaped structure with a large middle and small ends; in the high-temperature phase, the short end is bent by heat and pulls the long end outward, thereby increasing the interval between the tongue and the deformation part, and the low-temperature phase of the deformation part is L-shaped; the present invention adopts the low-temperature phase and the high-temperature phase of two symmetrically arranged and spaced-apart deformation parts with a two-way shape memory effect, and since the blockage location is generally the sprinkler head, the interval between the deformation part and the tongue is changed by the deformation form, so that the stuck debris can be discharged smoothly.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural irrigation, in particular to an irrigation sprinkler head. Background Art

[0002] The sprinkler head is an important component in agricultural irrigation.

[0003] Since the water used for irrigation is mostly river water or various types of diverted water, there are many impurities in the water (even after filtering, it still contains a large amount of fine impurities). When the impurities in the river water / diverted water are pumped into the sprinkler head, it is easy to cause blockage during irrigation and difficult to clean. The existing sprinkler heads do not have anti-clogging function, and during long-term use, the irrigation scenes are mostly outdoors, which causes the various mechanisms of the sprinkler head to age quickly (weathering, light aging, rain corrosion, etc.), especially the steering structure. The traditional steering mechanism consists of multiple parts that cooperate with each other, but once one of the parts is damaged, it cannot rotate and can only be replaced. The existing agricultural irrigation sprinkler heads are mostly made of plastic, which is easy to replace, but the recycling value is not high. In addition, many farmers who engage in agricultural irrigation have a weak awareness of environmental protection and are prone to discarding them at will, causing environmental pollution. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an irrigation sprinkler head which can be prevented from being blocked and whose steering mechanism can greatly extend the service life.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] An irrigation sprinkler head includes a steering mechanism and a sprinkler head mechanism;

[0007] The steering mechanism has a liquid outlet and a water inlet connected to an external water pipe, and the water inlet is connected to the liquid outlet;

[0008] The nozzle mechanism includes a nozzle and a pressure pump, the pressure pump is fixedly connected to the top of the steering mechanism, and the inlet of the pressure pump is connected to the liquid outlet;

[0009] The nozzle includes an outer shell, a tongue, a heating element, and two symmetrically arranged and spaced-apart deformation portions with a two-way shape memory effect. The outer shell is narrow at the top and wide at the bottom, and has a hollow bottom inside that is connected to the outlet of the pressure pump. The deformation portion includes a long end and a short end, and the long and short ends are connected to form an inverted L structure. The long end is connected to the bottom of the inner wall of the outer shell, and the short end is connected to the upper edge of the outer shell. The heating element is arranged in the space between the deformation portion and the outer shell.

[0010] The tongue is arranged between the two deformation parts and is detachably connected to the bottom of the outer shell. The tongue is a spindle-shaped structure with a large middle and small ends.

[0011] When the heating element is working, the deformation portion is in a high-temperature phase. In the high-temperature phase, the short end is bent by heat and pulls the long end outward, thereby increasing the distance between the tongue portion and the deformation portion. In the low-temperature phase, the deformation portion is L-shaped. In the low-temperature phase, the distance between the inclined surfaces corresponding to the two long ends from the middle to the top of the tongue portion and the long ends gradually decreases. In the high-temperature phase, the two inclined surfaces are parallel to the corresponding long ends or the distance between them gradually increases.

[0012] When the irrigation sprinkler head is working, the heating element is in a closed state and the deformed portion is in a low-temperature phase. When the irrigation sprinkler head is clogged, the heating element is in an open state and the deformed portion is in a high-temperature phase.

[0013] Preferably, the steering mechanism includes a base, a steering seat and an elastic joint, the water inlet is arranged in the middle of the upper surface of the base, the base is provided with a water inlet, and the interior of the base has a first channel connecting the water inlet and the water inlet; the interior of the base is further provided with three or more electromagnets;

[0014] The liquid outlet is arranged at the top of the steering seat, and a liquid inlet is arranged at the bottom of the steering seat, and the liquid inlet is connected to the liquid outlet; the liquid inlet is connected to the water inlet through an elastic joint; the steering seat is provided with magnets with the same number as the electromagnets, and the distribution positions of the magnets correspond to the positions of the electromagnets.

[0015] Preferably, a water inlet is provided on the side and / or bottom of the base.

[0016] Preferably, a quick connector is provided on the water inlet.

[0017] Preferably, the elastic joint includes a hose, a limit seat, a first clamping ring, and a second clamping ring, and the hose is connected between the water inlet and the liquid inlet;

[0018] The limit seat is a door-shaped structure and is fixedly connected to the base. A second channel for the hose to pass through is opened on the limit seat. The first clamping ring is fixed to the hose between the water inlet and the limit seat; the second clamping ring is fixed to the hose between the liquid inlet and the limit seat.

[0019] The diameters of the first and second snap rings are greater than the width of the second channel.

[0020] Preferably, the elastic joint further comprises a locking member, and the locking member is provided on the hose between the second clamping ring and the water inlet;

[0021] The locking member comprises a locking ring and a connecting member, wherein the locking ring is fixed on the hose, and one end of the connecting member is connected to the locking ring, and the other end is connected to the limiting seat.

[0022] Preferably, the nozzle mechanism further comprises a connecting pipe and a plurality of water storage pipes, and the outlet of the pressure pump is connected to the outer shell through the connecting pipe;

[0023] The water storage pipe is connected to the side wall of the connecting pipe, and the end of the water storage pipe is a closed structure and connected to the steering mechanism;

[0024] When the irrigation sprinkler head is in a cleaning state, the heating element is turned off, the deformed portion is in a low-temperature phase, the pressure pump is started and the water inlet is disconnected, and the pressure pump works in reverse, using the nozzle as an inlet to suck in air and the water in the water storage pipe to reversely flush into the steering mechanism for cleaning.

[0025] Preferably, the heating element is a PTC heater.

[0026] The beneficial effects of the present invention are as follows: by adopting two symmetrically arranged and spaced-apart deformation parts with a two-way shape memory effect, the two-way shape memory effect can present one state at high temperature and another state at low temperature, namely, a low-temperature phase and a high-temperature phase. Since the blockage location is generally the sprinkler head, the deformation form is used to change the interval between the deformation part and the tongue part, so that stuck debris can be discharged smoothly; and by setting the low-temperature phase of the deformation part as an L-shape, combined with the gradually decreasing interval between the inclined surface corresponding to the two long ends from the middle to the top of the tongue part and the low-temperature phase, it is possible to ensure the pressurization effect and reduce the control power requirement of the pressure pump. The requirements are met, which reduces the design difficulty; the deformation part in the low-temperature phase can maintain the stability of the structure without the intervention of additional energy, which can greatly reduce energy consumption; the tongue has a spindle-shaped structure with a large middle and small ends, and the interval between the inclined surface corresponding to the two long ends from the middle to the top of the tongue gradually becomes smaller in the low-temperature phase, which can achieve the goal of trapping and concentrating debris at the widest part of the tongue, and change in the high-temperature phase, so that debris can be uniformly removed without repeated cleaning; and the detachable tongue can remove the debris by disassembling the tongue when the maximum debris stuck in the tongue exceeds the maximum interval between the deformation part and the tongue, thereby ensuring the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural schematic diagram of an irrigation sprinkler head according to a specific embodiment of the present invention;

[0028] Figure 2 This is a schematic structural diagram of a steering seat of an irrigation sprinkler head according to a specific embodiment of the present invention;

[0029] Figure 3 This is a schematic structural diagram of a nozzle of an irrigation sprinkler head in a low temperature phase according to a specific embodiment of the present invention;

[0030] Figure 4 This is a schematic structural diagram of a nozzle of an irrigation sprinkler head in a high temperature phase according to a specific embodiment of the present invention;

[0031] Explanation of reference numbers: 1. Steering mechanism; 11. Base; 111. Water inlet; 112. Water receiving port; 113. Channel; 114. Electromagnet; 12. Steering seat; 121. Liquid outlet; 122. Liquid inlet; 123. Magnet; 13. Elastic joint; 131. Hose; 132. Limit seat; 133. First clamping ring; 134. Second clamping ring; 135. Locking ring; 136. Connecting piece; 2. Nozzle mechanism; 21. Nozzle; 211. Outer shell; 212. Tongue; 213. Heating element; 214. Deformation part; 215. Long end; 216. Short end; 217. Inclined surface; 22. Pressure pump; 23. Water storage pipe; 24. Connecting pipe; 3. External water pipe. DETAILED DESCRIPTION

[0032] To illustrate the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and accompanying drawings.

[0033] Please refer to Figures 1 to 4 , an irrigation sprinkler head, comprising a steering mechanism 1 and a sprinkler head mechanism 2;

[0034] The steering mechanism 1 has a liquid outlet 121 and a water inlet 111 connected to the external water pipe 3, and the water inlet 111 is connected to the liquid outlet 121;

[0035] The nozzle mechanism 2 includes a nozzle 21 and a pressure pump 22. The pressure pump 22 is fixedly connected to the top of the steering mechanism 1. The inlet of the pressure pump 22 is connected to the liquid outlet 121.

[0036] The nozzle 21 includes an outer shell 211, a tongue 212, a heating element 213, and two symmetrically arranged and spaced apart deformation portions 214 having a two-way shape memory effect. The outer shell 211 is narrow at the top and wide at the bottom, and has a hollow bottom inside that is connected to the outlet of the pressure pump 22. The deformation portion 214 includes a long end 215 and a short end 216. The long end 215 and the short end 216 are connected to form an inverted L structure. The long end is connected to the bottom of the inner wall of the outer shell 211, and the short end 216 is connected to the upper edge of the outer shell 211. The heating element 213 is disposed in the space between the deformation portion 214 and the outer shell 211.

[0037] The tongue portion 212 is disposed between the two deformed portions 214 and is detachably connected to the bottom of the outer shell 211. The tongue portion 212 is a spindle-shaped structure having a larger middle portion and smaller ends.

[0038] The heating element 213 is in a high-temperature phase when in operation. In the high-temperature phase, the short end 216 is bent by the heat and pulls the long end 215 outward, thereby increasing the distance between the tongue portion 212 and the deformed portion 214. The deformed portion 214 is L-shaped in the low-temperature phase. In the low-temperature phase, the distance between the inclined surfaces 217 corresponding to the two long ends 215 from the middle to the top of the tongue portion 212 and the long ends 215 gradually decreases. In the high-temperature phase, the two inclined surfaces 217 are parallel to the corresponding long ends 215 or the distance between them gradually increases.

[0039] When the irrigation sprinkler head is working, the heating element 213 is in a closed state and the deformed portion 214 is in a low temperature phase. When the irrigation sprinkler head is clogged, the heating element 213 is in an open state and the deformed portion 214 is in a high temperature phase.

[0040] As can be seen from the above description, by adopting two symmetrically arranged and spaced-apart deformation portions 214 with a two-way shape memory effect, the two-way shape memory effect can present one state at high temperature and another state at low temperature, namely, a low-temperature phase and a high-temperature phase. Since the blockage location is generally the sprinkler head, the deformation form is used to change the interval between the deformation portion 214 and the tongue portion 212, so that the stuck debris can be discharged smoothly; and by the L-shaped setting of the deformation portion 214 in the low-temperature phase, combined with the gradually smaller interval between the inclined surface 217 corresponding to the two long ends 215 from the middle to the top of the tongue portion 212 and the low-temperature phase, it can ensure the pressurization effect, reduce the control power requirement of the pressure pump 22, and reduce the design difficulty; the deformation portion 214 in the low-temperature phase does not need The additional energy intervention can maintain the stability of the structure and greatly reduce energy consumption; the tongue 212 has a spindle-shaped structure with a larger middle and smaller ends, and the interval between the inclined surface 217 corresponding to the two long ends 215 from the middle to the top of the tongue 212 gradually decreases at low temperature, so that the widest part of the tongue 212 can be used to trap and concentrate debris, and change at high temperature, so that debris can be removed uniformly without repeated cleaning; and the detachable tongue 212 can be used to remove the debris by disassembling the tongue 212 when the maximum debris stuck in the tongue 212 exceeds the maximum interval between the deformation part 214 and the tongue 212, thereby ensuring the service life; and it is very easy to convert from high temperature phase to low temperature phase, and cooling can be achieved by using water flowing in the pipe.

[0041] Furthermore, the steering mechanism 1 includes a base 11, a steering seat 12 and an elastic joint 13. A water inlet 112 is provided in the middle of the upper surface of the base 11. The base 11 is provided with a water inlet 111. A channel 113 is provided inside the base 11 to connect the water inlet 111 and the water inlet 112. Three or more electromagnets 114 are also provided inside the base 11.

[0042] The liquid outlet 121 is arranged at the top of the steering seat 12, and a liquid inlet 122 is arranged at the bottom of the steering seat 12, and the liquid inlet 122 is connected to the liquid outlet 121; the liquid inlet 122 is connected to the water inlet 112 through an elastic joint 13; the steering seat 12 is provided with magnets 123 with the same number as the electromagnets 114, and the distribution positions of the magnets 123 correspond to the positions of the electromagnets 114.

[0043] From the above description, it can be seen that through the setting of the magnet 123 and the electromagnet 114, the magnet 123 can be attracted by controlling the current size and direction of the electromagnet 114, thereby achieving direction adjustment without the need for additional structure assistance, thereby ensuring service life, and the magnet 123 and the electromagnet 114 are both sealed in the base 11 and the steering seat 12, and are not easily affected by external interference.

[0044] Furthermore, a water inlet 111 is provided on the side and / or bottom of the base 11 .

[0045] It can be seen from the above description that by providing multiple water inlets 111 , multi-directional water connection with the external water pipe 3 can be achieved to meet the water connection needs in different situations.

[0046] Furthermore, a quick connector is provided on the water inlet 111 .

[0047] From the above description, it can be seen that the provision of the quick connector enables quick connection and water delivery.

[0048] Furthermore, the elastic joint 13 includes a hose 131, a limiting seat 132, a first clamping ring 133, and a second clamping ring 134. The hose 131 is connected between the water inlet 112 and the liquid inlet 122;

[0049] The limiting seat 132 is a gate-shaped structure and is fixedly connected to the base 11. The limiting seat 132 is provided with a second channel 113 for the hose 131 to pass through. The first clamping ring 133 is fixed to the hose 131 between the water inlet 112 and the limiting seat 132; the second clamping ring 134 is fixed to the hose 131 between the liquid inlet 122 and the limiting seat 132.

[0050] The diameters of the first and second snap rings 133 and 134 are greater than the width of the channel 113 .

[0051] From the above description, it can be seen that by setting the first clamping ring 133 and the second clamping ring 134, the elastic joint 13 can be limited to avoid excessive deformation causing the hose 131 to break, and by the limiting seat 132 with the channel 113, the positions of the first clamping ring 133 and the second clamping ring 134 can be limited to avoid local breakage, and the first clamping ring 133 and the second clamping ring 134 can also ensure that the hose 131 will not be pulled out too much or pressed in too much.

[0052] Furthermore, the elastic joint 13 further includes a locking member, which is provided on the hose 131 between the second clamping ring 134 and the water inlet 112;

[0053] The locking member includes a locking ring 135 and a connecting member 136 . The locking ring 135 is fixed on the hose 131 . One end of the connecting member 136 is connected to the locking ring 135 , and the other end is connected to the limiting seat 132 .

[0054] As can be seen from the above description, the position of the hose 131 can be locked by the locking member, and the locking ring 135 can increase the rigidity to prevent the hose 131 from being deformed due to excessive pressure inside the hose 131 caused by blockage.

[0055] Furthermore, the nozzle mechanism 2 further includes a connecting pipe 24 and a plurality of water storage pipes 23 , and the outlet of the pressure pump 22 is connected to the outer shell 211 through the connecting pipe 24 ;

[0056] The water storage pipe 23 is connected to the side wall of the connecting pipe, and the end of the water storage pipe 23 is a closed structure and connected to the steering mechanism 1;

[0057] When the irrigation sprinkler head is in the cleaning state, the heating element 213 is turned off, the deformed portion 214 is in the low temperature phase, the pressure pump 22 is started and the water inlet 111 is disconnected. The pressure pump 22 works in reverse, using the nozzle 21 as an inlet to suck in air and the water in the water storage pipe 23 to reversely flush into the steering mechanism 1 for cleaning.

[0058] As can be seen from the above description, when cleaning through the irrigation sprinkler head, the pressure pump 22 is started and the water inlet 111 is disconnected. The pressure pump 22 works in reverse, and the air and the water in the water storage pipe 23 (the air drives the water negative pressure effect) are reversely flushed into the steering mechanism 1 for cleaning, which can clean the pipes inside the sprinkler head and avoid excessive accumulation, resulting in blockage and affecting the service life.

[0059] Furthermore, the heating element 213 is a PTC heater.

[0060] Example 1

[0061] An irrigation sprinkler head includes a steering mechanism and a sprinkler head mechanism;

[0062] The steering mechanism has a liquid outlet and a water inlet connected to an external water pipe, and the water inlet is connected to the liquid outlet;

[0063] The nozzle mechanism includes a nozzle and a pressure pump, the pressure pump is fixedly connected to the top of the steering mechanism, and the inlet of the pressure pump is connected to the liquid outlet;

[0064] The nozzle includes an outer shell, a tongue, a heating element, and two symmetrically arranged and spaced-apart deformation portions with a two-way shape memory effect. The outer shell is narrow at the top and wide at the bottom, and has a hollow bottom inside that is connected to the outlet of the pressure pump. The deformation portion includes a long end and a short end, and the long and short ends are connected to form an inverted L structure. The long end is connected to the bottom of the inner wall of the outer shell, and the short end is connected to the upper edge of the outer shell. The heating element is arranged in the space between the deformation portion and the outer shell.

[0065] The tongue is arranged between the two deformation parts and is detachably connected to the bottom of the outer shell. The tongue is a spindle-shaped structure with a large middle and small ends.

[0066] When the heating element is working, the deformation portion is in a high-temperature phase. In the high-temperature phase, the short end is bent by heat and pulls the long end outward, thereby increasing the distance between the tongue portion and the deformation portion. In the low-temperature phase, the deformation portion is L-shaped. In the low-temperature phase, the distance between the inclined surfaces corresponding to the two long ends from the middle to the top of the tongue portion and the long ends gradually decreases. In the high-temperature phase, the two inclined surfaces are parallel to the corresponding long ends or the distance between them gradually increases.

[0067] When the irrigation sprinkler head is working, the heating element is in a closed state and the deformed portion is in a low-temperature phase. When the irrigation sprinkler head is clogged, the heating element is in an open state and the deformed portion is in a high-temperature phase.

[0068] The steering mechanism includes a base, a steering seat and an elastic joint. The water inlet is provided in the middle of the upper surface of the base. The base is provided with a water inlet. The interior of the base has a first channel connecting the water inlet and the water inlet. Three electromagnets are also provided inside the base.

[0069] The liquid outlet is arranged at the top of the steering seat, and a liquid inlet is arranged at the bottom of the steering seat, and the liquid inlet is connected to the liquid outlet; the liquid inlet is connected to the water inlet through an elastic joint; the steering seat is provided with magnets with the same number as the electromagnets, and the distribution positions of the magnets correspond to the positions of the electromagnets.

[0070] Water inlets are provided on the side and bottom of the base.

[0071] The water inlet is provided with a quick connector.

[0072] The elastic joint includes a hose, a limit seat, a first clamping ring, and a second clamping ring, and the hose is connected between the water inlet and the liquid inlet;

[0073] The limit seat is a door-shaped structure and is fixedly connected to the base. A second channel for the hose to pass through is opened on the limit seat. The first clamping ring is fixed to the hose between the water inlet and the limit seat; the second clamping ring is fixed to the hose between the liquid inlet and the limit seat.

[0074] The diameters of the first and second snap rings are greater than the width of the second channel.

[0075] The elastic joint further comprises a locking member, which is arranged on the hose between the second clamping ring and the water inlet;

[0076] The locking member comprises a locking ring and a connecting member, wherein the locking ring is fixed on the hose, and one end of the connecting member is connected to the locking ring, and the other end is connected to the limiting seat.

[0077] The nozzle mechanism further includes a connecting pipe and a plurality of water storage pipes, and the outlet of the pressure pump is connected to the outer shell through the connecting pipe;

[0078] The water storage pipe is connected to the side wall of the connecting pipe, and the end of the water storage pipe is a closed structure and connected to the steering mechanism;

[0079] When the irrigation sprinkler head is in a cleaning state, the heating element is turned off, the deformed portion is in a low-temperature phase, the pressure pump is started and the water inlet is disconnected, and the pressure pump works in reverse, using the nozzle as an inlet to suck in air and the water in the water storage pipe to reversely flush into the steering mechanism for cleaning.

[0080] The heating element is a PTC heater.

[0081] The deformation part is a copper-zinc-aluminum-nickel (Cu-Zn-Al-Ni) alloy, a titanium-nickel (Ti-Ni) alloy, a copper-aluminum-nickel (Cu-Al-Ni) alloy, a copper-zinc-tin (Cu-Zn-Sn) alloy or an iron-manganese-silicon (Fe-Mn-Si) alloy that has been trained with a two-way shape memory effect.

[0082] Example 2

[0083] An irrigation sprinkler head, which is similar to the first embodiment and will not be described in detail, wherein four electromagnets are further provided inside the base.

[0084] A water inlet is provided on the side of the base.

[0085] Example 3

[0086] An irrigation sprinkler head, which is similar to the first embodiment and will not be described in detail, wherein six electromagnets are further arranged inside the base.

[0087] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An irrigation sprinkler head, characterized in that: Including steering mechanism and nozzle mechanism; The steering mechanism has a liquid outlet and a water inlet connected to an external water pipe, and the water inlet is connected to the liquid outlet; The nozzle mechanism includes a nozzle and a pressure pump, the pressure pump is fixedly connected to the top of the steering mechanism, and the inlet of the pressure pump is connected to the liquid outlet; The nozzle includes an outer shell, a tongue, a heating element, and two symmetrically arranged and spaced-apart deformation portions with a two-way shape memory effect. The outer shell is narrow at the top and wide at the bottom, and has a hollow bottom inside that is connected to the outlet of the pressure pump. The deformation portion includes a long end and a short end, and the long and short ends are connected to form an inverted L structure. The long end is connected to the bottom of the inner wall of the outer shell, and the short end is connected to the upper edge of the outer shell. The heating element is arranged in the space between the deformation portion and the outer shell. The tongue is arranged between the two deformation parts and is detachably connected to the bottom of the outer shell. The tongue is a spindle-shaped structure with a large middle and small ends. When the heating element is working, the deformation portion is in a high-temperature phase. In the high-temperature phase, the short end is bent by heat and pulls the long end outward, thereby increasing the distance between the tongue portion and the deformation portion. In the low-temperature phase, the deformation portion is L-shaped. In the low-temperature phase, the distance between the inclined surfaces corresponding to the two long ends from the middle to the top of the tongue portion and the long ends gradually decreases. In the high-temperature phase, the two inclined surfaces are parallel to the corresponding long ends or the distance between them gradually increases. When the irrigation sprinkler head is working, the heating element is in a closed state and the deformed portion is in a low-temperature phase. When the irrigation sprinkler head is clogged, the heating element is in an open state and the deformed portion is in a high-temperature phase.

2. The irrigation sprinkler head according to claim 1, wherein The steering mechanism includes a base, a steering seat and an elastic joint. The water inlet is provided in the middle of the upper surface of the base. The base is provided with a water inlet. The base has a first channel inside that connects the water inlet and the water inlet. The base is also provided with three or more electromagnets. The liquid outlet is arranged at the top of the steering seat, and a liquid inlet is arranged at the bottom of the steering seat, and the liquid inlet is connected to the liquid outlet; the liquid inlet is connected to the water inlet through an elastic joint; the steering seat is provided with magnets with the same number as the electromagnets, and the distribution positions of the magnets correspond to the positions of the electromagnets.

3. The irrigation sprinkler head according to claim 2, wherein: A water inlet is provided on the side and / or bottom of the base.

4. The irrigation sprinkler head according to claim 3, wherein: The water inlet is provided with a quick connector.

5. The irrigation sprinkler head according to claim 2, wherein: The elastic joint includes a hose, a limit seat, a first clamping ring, and a second clamping ring, and the hose is connected between the water inlet and the liquid inlet; The limit seat is a door-shaped structure and is fixedly connected to the base. A second channel for the hose to pass through is opened on the limit seat. The first clamping ring is fixed to the hose between the water inlet and the limit seat; the second clamping ring is fixed to the hose between the liquid inlet and the limit seat. The diameters of the first and second snap rings are greater than the width of the second channel.

6. The irrigation sprinkler head according to claim 5, characterized in that The elastic joint further comprises a locking member, which is arranged on the hose between the second clamping ring and the water inlet; The locking member comprises a locking ring and a connecting member, wherein the locking ring is fixed on the hose, and one end of the connecting member is connected to the locking ring, and the other end is connected to the limiting seat.

7. The irrigation sprinkler head according to claim 1, wherein: The nozzle mechanism further includes a connecting pipe and a plurality of water storage pipes, and the outlet of the pressure pump is connected to the outer shell through the connecting pipe; The water storage pipe is connected to the side wall of the connecting pipe, and the end of the water storage pipe is a closed structure and connected to the steering mechanism; When the irrigation sprinkler head is in a cleaning state, the heating element is turned off, the deformed portion is in a low-temperature phase, the pressure pump is started and the water inlet is disconnected, and the pressure pump works in reverse, using the nozzle as an inlet to suck in air and the water in the water storage pipe to reversely flush into the steering mechanism for cleaning.

8. The irrigation sprinkler head according to claim 1, wherein: The heating element is a PTC heater.

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