阅读说明：本技术 一种用于智能农业灌溉中的防堵塞装置 (A anti-clogging device for in intelligent agricultural irrigation ) 是由 罗恒 于 2021-07-13 设计创作，主要内容包括：本发明涉及智能机械技术领域,且公开了一种用于智能农业灌溉中的防堵塞装置,包括滴灌通道和外壳,还包括检测机构、控制机构、传动机构和刮除机构,所述外壳的内部活动连接有检测机构,所述检测机构用来检测滴灌通道内部是否堵塞,所述检测机构的外侧活动连接有控制机构,所述控制机构用来控制压敏电阻的通断路,所述外壳的内部活动连接有传动机构。该用于智能农业灌溉中的防堵塞装置,现有技术中滴灌口的堵塞会影响滴灌的效率,同时还会增大种植成本,通过检测机构和控制机构的配合使用,使得压敏电阻通路,带动电机转动,通过电机转动带动移动柱做往复直线运动使得刮板对堵塞的滴灌口进行疏通,操作简单,自动化程度高,提高滴管的效果。(The invention relates to the technical field of intelligent machinery, and discloses an anti-blocking device for intelligent agricultural irrigation, which comprises a drip irrigation channel and a shell, and further comprises a detection mechanism, a control mechanism, a transmission mechanism and a scraping mechanism, wherein the detection mechanism is movably connected inside the shell and used for detecting whether the interior of the drip irrigation channel is blocked, the control mechanism is movably connected outside the detection mechanism and used for controlling the on-off of a piezoresistor, and the transmission mechanism is movably connected inside the shell. This an anti-clogging device for among intelligent agricultural irrigation, drip irrigation mouthful jam among the prior art and can influence the efficiency of driping irrigation, still can increase the planting cost simultaneously, use through detection mechanism and control mechanism's cooperation for the piezo-resistor route drives the motor and rotates, rotates through the motor and drives the removal post and be reciprocal linear motion and make the scraper blade to the mouthful mediation of driping irrigation of jam, easy operation, and degree of automation is high, improves the effect of burette.)

1. An anti-clogging device for intelligent agricultural irrigation, comprising a drip irrigation channel (1) and a shell (2), characterized in that: still include detection mechanism (3), control mechanism (4), drive mechanism (5) and strike off mechanism (6), the inside swing joint of shell (2) has detection mechanism (3), and detection mechanism (3) are used for detecting and drip irrigation passageway (1) inside and whether block up, the outside swing joint of detection mechanism (3) has control mechanism (4), and control mechanism (4) are used for the break-make of control circuit, the inside swing joint of shell (2) has drive mechanism (5), the inboard swing joint of drive mechanism (5) strikes off mechanism (6), drive mechanism (5) are used for promoting to strike off mechanism (6) and remove.

2. An anti-clogging device for use in intelligent agricultural irrigation, according to claim 1, characterized in that: the outer side of the drip irrigation channel (1) is sleeved with a shell (2).

3. An anti-clogging device for use in intelligent agricultural irrigation, according to claim 1, characterized in that: detection mechanism (3) include spacing groove (31) and movable block (32), spacing groove (31) have been seted up to the inside of shell (2), the inside swing joint of spacing groove (31) has movable block (32), the diameter of spacing groove (31) equals the diameter of movable block (32).

4. An anti-clogging device for use in intelligent agricultural irrigation, according to claim 3, characterized in that: the control mechanism (4) comprises a conductive column (41), a sliding rheostat (42), a limiting spring (43) and a piezoresistor (44), the outer side of the movable block (32) is movably connected with the conductive column (41), the bottom of the conductive column (41) is movably connected with the sliding rheostat (42), the outer side of the conductive column (41) is movably connected with the limiting spring (43), and the outer side of the limiting groove (31) is movably connected with the piezoresistor (44).

5. An anti-clogging device for use in intelligent agricultural irrigation, according to claim 1, characterized in that: the transmission mechanism (5) comprises a motor (51), a rotating shaft (52), a rotating block (53), a sliding groove (54), a movable pin (55), a movable rod (56), a movable column (57), a compression spring (58), a piezoelectric crystal (59) and a fixing ring (510), the motor (51) is movably connected to the inner portion of the shell (2), the rotating shaft (52) is inserted into the motor (51), and the rotating block (53) is movably connected to the outer side of the rotating shaft (52).

6. An anti-clogging device for use in intelligent agricultural irrigation, according to claim 5, characterized in that: spout (54) have been seted up to the inside of turning block (53), the inside swing joint of spout (54) has movable pin (55), the outside swing joint of movable pin (55) has movable rod (56), the inboard swing joint of movable rod (56) has removal post (57), the inboard swing joint of movable rod (56) has compression spring (58), the inboard swing joint of compression spring (58) has piezoelectric crystal (59), the outside swing joint of removing post (57) has retainer plate (510).

7. An anti-clogging device for use in intelligent agricultural irrigation, according to claim 5, characterized in that: strike off mechanism (6) including stripper plate (61), electric telescopic handle (62) and scraper blade (63), the inboard swing joint of removing post (57) has stripper plate (61), the inside swing joint of stripper plate (61) has electric telescopic handle (62), the bottom swing joint of electric telescopic handle (62) has scraper blade (63).

8. An anti-clogging device for use in intelligent agricultural irrigation according to claim 6, characterized in that: the scraping plate (63) is movably connected inside the extrusion plate (61), and the fixed ring (510) is sleeved outside the movable column (57).

9. An anti-clogging device for use in intelligent agricultural irrigation according to claim 6, characterized in that: the sliding groove (54) is a V-shaped groove, the movable pin (55) is inserted into the sliding groove (54), and the movable rod (56) is movably connected to the outer side of the rotating block (53).

Technical Field

The invention relates to the technical field of intelligent machinery, in particular to an anti-blocking device for intelligent agricultural irrigation.

Background

The intelligent irrigation control system is an automatic control collection technology and an expert system technology which are independently researched and developed by the technical research center of the national agricultural information chemical engineering, a sensor technology, a communication technology, a computer technology and an integrated irrigation management system, a motor-pumped well irrigation control system carries out water taking management on a farmland motor-pumped well through an IC card motor-pumped well irrigation control box, the agricultural water metering is realized, the automatic acquisition and measurement and control of water resource information are realized, meanwhile, different schemes are carried out aiming at the distribution condition of the motor-pumped well and the difference of irrigation areas, but the general structure of the current drip irrigation belt is simpler to set a pressure reduction flow channel communicated with a water inlet tank and a water outlet tank, and the structure is small in water inlet hole and easy to cause blocking phenomenon in the long-time use process.

Often need carry out guang an with chemical fertilizer pesticide mixing stirring to crops at the in-process of burette, a large amount of labours have been saved like this, and be difficult for appearing extravagantly, but when long-time use, incrustation scale and undissolved chemical fertilizer particulate matter can lead to driping irrigation the head and block up, can influence the effect of irrigation like this, increase planting cost, consequently, we have provided an anti-clogging device who is arranged in intelligent agricultural irrigation and have solved above problem, and the operation is simple, and degree of automation is high, sparingly irrigate cost's advantage.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an anti-blocking device for intelligent agricultural irrigation, which has the advantages of simple operation, high automation degree and irrigation cost saving, and solves the problems that the fertilizer and pesticide are often required to be mixed and stirred to widely install crops in the dropper process, so that a large amount of labor force is saved, the waste is not easy to occur, but when the dropper is used for a long time, the drip irrigation head is blocked due to scale and undissolved fertilizer particles, the irrigation effect is influenced, and the planting cost is increased.

(II) technical scheme

In order to realize the purposes of simple operation, high automation degree and irrigation cost saving, the invention provides the following technical scheme: the utility model provides an anti-clogging device for in intelligent agricultural irrigation, includes and drips irrigation passageway and shell, still includes detection mechanism, control mechanism, drive mechanism and strikes off the mechanism, the inside swing joint of shell has detection mechanism, detection mechanism is used for detecting and drips irrigation the inside jam of passageway, detection mechanism's outside swing joint has control mechanism, control mechanism is used for controlling the on-off of piezo-resistor, the inside swing joint of shell has drive mechanism, drive mechanism is used for promoting strikes off the mechanism, drive mechanism's inboard swing joint has strikes off the mechanism.

Further, the shell has been cup jointed in the outside of driping irrigation the passageway, and the liquid that needs irrigate flows out from driping irrigation the passageway inside, and long-time use can make to drip irrigation the passageway and block up, causes and can not normally irrigate.

Further, detection mechanism includes spacing groove and movable block, the spacing groove has been seted up to the inside of shell, the inside swing joint of spacing groove has the movable block, the diameter of spacing groove equals the diameter of movable block, when driping irrigation the inside jam of passageway, the water of driping irrigation this moment can be saved in the inside of driping irrigation the passageway, and water pressure this moment can extrude the movable block, promotes the movable block and moves to the outside in the inside of spacing groove.

Further, the control mechanism comprises a conductive column, a sliding rheostat, a limiting spring and a piezoresistor, wherein the outer side of the movable block is movably connected with the conductive column, when the movable block moves towards the outer side, the conductive column is pushed to move towards the outer side, so that the resistance of the sliding rheostat is increased, the voltage passing through the circuit is reduced, when the circuit voltage is smaller than the maximum path voltage of the piezoresistor, the piezoresistor is in a path, the bottom of the conductive column is movably connected with the sliding rheostat, the outer side of the conductive column is movably connected with the limiting spring, when the conductive column moves, the limiting spring is squeezed, and the outer side of the limiting groove is movably connected with the piezoresistor.

Furthermore, the transmission mechanism comprises a motor, a rotating shaft, a rotating block, a sliding groove, a movable pin, a movable rod, a movable column, a compression spring, a piezoelectric crystal and a fixed ring, the motor is movably connected inside the shell, the rotating shaft is inserted inside the motor, the motor can drive the rotating shaft to rotate, the rotating block is movably connected outside the rotating shaft, the sliding groove is arranged inside the rotating block, the movable pin is movably connected inside the sliding groove, the movable rod is movably connected outside the movable pin, the movable pin slides inside the sliding groove to drive the movable column to do reciprocating linear motion, the movable column is movably connected inside the movable rod, the compression spring is movably connected inside the movable rod, the piezoelectric crystal is movably connected inside the compression spring, the fixed ring is movably connected outside the movable column, when the movable column moves, the movable rod extrudes the compression spring, the compression spring extrudes the piezoelectric crystal, and the piezoelectric crystal generates current at the moment.

Further, strike off the mechanism and include stripper plate, electric telescopic handle and scraper blade, the inboard swing joint that removes the post has the stripper plate, the inside swing joint of stripper plate has electric telescopic handle, electric telescopic handle and piezoelectric crystal electric connection receive the extrusion when piezoelectric crystal, and electric telescopic handle extends downwards this moment, and the place that the scraper blade will block up is dredged this moment, electric telescopic handle's bottom swing joint has the scraper blade, and after the mediation is accomplished, the inside rivers of channel of driping irrigation are saved, lead electrical pillar and get back to initial condition under spacing spring's spring action, and the initial condition is got back to the movable block, and circuit voltage is greater than piezo-resistor's the biggest access voltage this moment, and piezo-resistor opens circuit, and motor stall.

Furthermore, scraper blade swing joint is in the inside of stripper plate, and the retainer plate cup joints in the outside of removing the post, along with the removal of movable rod for piezoelectric crystal is extruded between movable rod and retainer plate, and piezoelectric crystal's one end is connected with electric telescopic handle, and one end is connected with the power, electric telescopic handle's model is YNT-03, and output voltage is twelve volts, and the biggest stifled is in one thousand two hundred.

Furthermore, the sliding groove is a V-shaped groove, the movable pin is inserted into the sliding groove, and the movable rod is movably connected to the outer side of the rotating block.

(III) advantageous effects

Compared with the prior art, the invention provides an anti-blocking device for intelligent agricultural irrigation, which has the following beneficial effects:

1. this an anti-clogging device for among intelligent agricultural irrigation, drip irrigation mouthful jam among the prior art and can influence the efficiency of driping irrigation, still can increase the planting cost simultaneously, use through detection mechanism and control mechanism's cooperation for the piezo-resistor route drives the motor and rotates, rotates through the motor and drives the removal post and be reciprocal linear motion and make the scraper blade to the mouthful mediation of driping irrigation of jam, easy operation, and degree of automation is high, improves the effect of burette.

2. This an anti-clogging device for among intelligent agricultural irrigation uses through drive mechanism and the cooperation of striking off the mechanism, at motor during operation, drives and removes the post and remove and make retainer plate extrusion piezoelectric crystal for the piezoelectric crystal both ends produce electric current and switch on electric telescopic handle, make electric telescopic handle promote the scraper blade and remove downwards and dredge the mouth of driping irrigation of jam, and degree of automation is high, saves the resource.

Drawings

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

FIG. 2 is an enlarged schematic view of the control mechanism of the present invention;

FIG. 3 is an enlarged view of the transmission mechanism of the present invention;

fig. 4 is a schematic diagram of the moving structure of the movable block according to the present invention.

In the figure: 1. a drip irrigation channel; 2. a housing; 3. a detection mechanism; 4. a control mechanism; 5. a transmission mechanism; 6. a scraping mechanism; 31. a limiting groove; 32. a movable block; 41. a conductive post; 42. a slide rheostat; 43. a limiting spring; 44. a voltage dependent resistor; 51. a motor; 52. a rotating shaft; 53. rotating the block; 54. a chute; 55. a movable pin; 56. a movable rod; 57. moving the column; 58. a compression spring; 59. a piezoelectric crystal; 510. a stationary ring; 61. a pressing plate; 62. an electric telescopic rod; 63. a scraper.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1-3, an anti-clogging device for intelligent agricultural irrigation includes a drip irrigation channel 1 and a housing 2, the housing 2 is sleeved on the outer side of the drip irrigation channel 1, the liquid to be irrigated flows out from the interior of the drip irrigation channel 1, the drip irrigation channel 1 is clogged to cause abnormal irrigation after long-time use, the device further includes a control mechanism 4, a transmission mechanism 5 and a scraping mechanism 6, the detection mechanism 3 is used for detecting whether the interior of the drip irrigation channel 1 is clogged, the outer side of the detection mechanism 3 is movably connected with the control mechanism 4, the control mechanism 4 includes a conductive post 41, a sliding rheostat 42, a limiting spring 43 and a piezoresistor 44, the outer side of the movable block 32 is movably connected with a conductive post 41, when the movable block 32 moves to the outer side, the conductive post 41 is pushed to move to the outer side, so that the resistance of the sliding rheostat 42 is increased, and the voltage passing through the circuit is reduced, when the circuit voltage is less than the maximum path voltage of the piezoresistor 44, the piezoresistor 44 is in a path, the bottom of the conductive column 41 is movably connected with the slide rheostat 42, the outer side of the conductive column 41 is movably connected with the limiting spring 43, when the conductive column 41 moves to press the limiting spring 43, the outer side of the limiting groove 31 is movably connected with the piezoresistor 44, the control mechanism 4 is used for controlling the on-off path of the piezoresistor 44, and the inner part of the shell 2 is movably connected with the transmission mechanism 5.

The transmission mechanism 5 comprises a motor 51, a rotating shaft 52, a rotating block 53, a sliding chute 54, a movable pin 55, a movable rod 56, a movable column 57, a compression spring 58, a piezoelectric crystal 59 and a fixed ring 510, wherein the motor 51 is movably connected inside the housing 2, the rotating shaft 52 is inserted inside the motor 51, the rotating shaft 52 can be driven by the motor 51 to rotate, the rotating block 53 is movably connected outside the rotating shaft 52, the sliding chute 54 is formed inside the rotating block 53, the sliding chute 54 is a V-shaped groove, the movable pin 55 is inserted inside the sliding chute 54, the movable rod 56 is movably connected outside the rotating block 53, the movable pin 55 is movably connected inside the sliding chute 54, the movable column 57 is driven by the movable pin 55, the movable rod 56 is movably connected inside the sliding chute 54 to reciprocate the linear motion, the movable column 57 is movably connected inside the movable rod 56, the compression spring 58 is movably connected inside the movable rod 56, the inner side of the compression spring 58 is movably connected with a piezoelectric crystal 59, the outer side of the movable column 57 is movably connected with a fixed ring 510, when the movable column 57 moves, the movable rod 56 presses the compression spring 58, the compression spring 58 presses the piezoelectric crystal 59, at the moment, the piezoelectric crystal 59 generates current, and the transmission mechanism 5 is used for pushing the scraping mechanism 6.

The inner side of the transmission mechanism 5 is movably connected with a scraping mechanism 6, the scraping mechanism 6 comprises an extrusion plate 61, an electric telescopic rod 62 and a scraper 63, the inner side of the movable column 57 is movably connected with the extrusion plate 61, the inner part of the extrusion plate 61 is movably connected with the electric telescopic rod 62, the electric telescopic rod 62 is electrically connected with the piezoelectric crystal 59, when the piezoelectric crystal 59 is extruded, the electric telescopic rod 62 extends downwards, the scraper 63 dredges the blocked place at the moment, the bottom of the electric telescopic rod 62 is movably connected with the scraper 63, the scraper 63 is movably connected inside the extrusion plate 61, the fixed ring 510 is sleeved outside the movable column 57, along with the movement of the movable rod 56, the piezoelectric crystal 59 is extruded between the movable rod 56 and the fixed ring 510, one end of the piezoelectric crystal 59 is connected with the electric telescopic rod 62, one end of the piezoelectric crystal is connected with a power supply, the model of the electric telescopic rod 62 is YNT-03, the output voltage is twelve volts, the maximum voltage is one thousand to two hundred, when the dredging is completed, the water accumulated in the drip irrigation channel 1 flows out, the conductive column 41 returns to the initial state under the elastic force action of the limiting spring 43, the movable block 32 returns to the initial state, the circuit voltage is larger than the maximum access voltage of the piezoresistor 44 at the moment, the piezoresistor 44 is disconnected, and the motor 51 stops rotating.

Example two:

referring to fig. 1-4, an anti-clogging device for intelligent agricultural irrigation comprises a drip irrigation channel 1 and a housing 2, the housing 2 is sleeved outside the drip irrigation channel 1, the liquid to be irrigated flows out of the interior of the drip irrigation channel 1, the drip irrigation channel 1 is clogged to cause abnormal irrigation after long-time use, the anti-clogging device further comprises a detection mechanism 3, a control mechanism 4, a transmission mechanism 5 and a scraping mechanism 6, the detection mechanism 3 is movably connected inside the housing 2, the detection mechanism 3 comprises a limiting groove 31 and a movable block 32, the limiting groove 31 is formed inside the housing 2, the movable block 32 is movably connected inside the limiting groove 31, the diameter of the limiting groove 31 is equal to that of the movable block 32, when the drip irrigation channel 1 is internally clogged, the water is accumulated inside the drip irrigation channel 1, the movable block 32 is squeezed by water pressure, the movable block 32 is pushed to move outwards inside the limiting groove 31, the detection mechanism 3 is used for detecting whether the interior of the drip irrigation channel 1 is blocked, and the outer side of the detection mechanism 3 is movably connected with a control mechanism 4.

The control mechanism 4 comprises a conductive column 41, a sliding rheostat 42, a limiting spring 43 and a piezoresistor 44, the outer side of the movable block 32 is movably connected with the conductive column 41, when the movable block 32 moves outwards, the conductive column 41 is pushed to move outwards, so that the resistance of the sliding rheostat 42 is increased, the voltage passing through a circuit is reduced, when the circuit voltage is smaller than the maximum path voltage of the piezoresistor 44, the piezoresistor 44 is in a path, the bottom of the conductive column 41 is movably connected with the sliding rheostat 42, the outer side of the conductive column 41 is movably connected with the limiting spring 43, when the conductive column 41 moves, the limiting spring 43 is squeezed, the outer side of the limiting groove 31 is movably connected with the piezoresistor 44, the control mechanism 4 is used for controlling the on-off path of the piezoresistor 44, the inner part of the shell 2 is movably connected with a transmission mechanism 5, and the transmission mechanism 5 comprises a motor 51, a rotating shaft 52, a rotating block 53, a sliding chute 54, a sliding groove 52, a sliding groove 31 and a sliding groove 31, wherein the sliding groove is formed in the shell 2, and the sliding groove is formed in the sliding groove, Activity round pin 55, movable rod 56, removal post 57, compression spring 58, piezoelectric crystal 59 and retainer plate 510, the inside swing joint of shell 2 has motor 51, and the inside of motor 51 is pegged graft and is had axis of rotation 52, and motor 51 rotates and can drive axis of rotation 52 and rotate, and the outside swing joint of axis of rotation 52 has turning block 53, and spout 54 has been seted up to turning block 53's inside, and spout 54 is V type groove, and activity round pin 55 pegs graft in the inside of spout 54.

The movable rod 56 is movably connected to the outer side of the rotating block 53, the inside of the sliding chute 54 is movably connected with a movable pin 55, the outside of the movable pin 55 is movably connected with a movable rod 56, the movable pin 55 slides in the sliding chute 54 to drive the movable column 57 to do reciprocating linear motion, the inside of the movable rod 56 is movably connected with a movable column 57, the inside of the movable rod 56 is movably connected with a compression spring 58, the inside of the compression spring 58 is movably connected with a piezoelectric crystal 59, the outside of the movable column 57 is movably connected with a fixed ring 510, when the movable column 57 moves, the movable rod 56 extrudes the compression spring 58, the compression spring 58 extrudes the piezoelectric crystal 59, the piezoelectric crystal 59 generates current at the moment, the transmission mechanism 5 is used for pushing the scraping mechanism 6, the inside of the transmission mechanism 5 is movably connected with the scraping mechanism 6, the scraping mechanism 6 comprises an extrusion plate 61, an electric telescopic rod 62 and a scraper 63, the inside of the movable column 57 is movably connected with the extrusion plate 61, the interior of the squeezing plate 61 is movably connected with an electric telescopic rod 62.

The electric telescopic rod 62 is electrically connected with the piezoelectric crystal 59, when the piezoelectric crystal 59 is squeezed, the electric telescopic rod 62 extends downwards at the moment, the scraping plate 63 dredges the blocked place at the moment, the bottom of the electric telescopic rod 62 is movably connected with the scraping plate 63, the scraping plate 63 is movably connected inside the squeezing plate 61, the fixing ring 510 is sleeved outside the moving column 57, along with the movement of the moving rod 56, the piezoelectric crystal 59 is squeezed between the moving rod 56 and the fixing ring 510, one end of the piezoelectric crystal 59 is connected with the electric telescopic rod 62, the other end is connected with a power supply, the electric telescopic rod 62 is YNT-03 in model number, the output voltage is twelve volts, the maximum blocking is two hundred thousand, after the dredging is completed, the water accumulated in the drip irrigation channel 1 flows out, the conductive column 41 returns to the initial state under the elastic force of the limiting spring 43, and the movable block 32 returns to the initial state, at this time, the circuit voltage is greater than the maximum path voltage of the varistor 44, the varistor 44 is disconnected, and the motor 51 stops rotating.

The working principle is as follows: an anti-blocking device used in intelligent agricultural irrigation comprises a drip irrigation channel 1 and a shell 2, and further comprises a detection mechanism 3, a control mechanism 4, a transmission mechanism 5 and a scraping mechanism 6, when the drip irrigation channel 1 in the device is blocked, normal irrigation cannot be realized, water in a water pipe is accumulated in the drip irrigation channel 1, at the moment, water pressure extrudes a movable block 32 to push the movable block 32 to move outwards in the limiting groove 31, the outer side of the movable block 32 is movably connected with a conductive column 41, so that the conductive column 41 moves outwards to extrude a limiting spring 43, meanwhile, the resistance of a sliding rheostat 42 is increased, the voltage passing through a circuit is reduced, when the circuit voltage is smaller than the maximum channel voltage of the piezoresistor 44, the piezoresistor 44 is in a channel, the motor 51 is electrically connected with the piezoresistor 44 to drive the motor 51 to work, the inner side of the motor 51 is movably connected with a rotating shaft 52, the rotating block 53 is movably connected to the outer side of the rotating shaft 52, the rotating block 53 is provided with a V-shaped sliding groove 54, the movable rod 56 moves on the sliding groove 54, the movable column 57 is driven to extend inwards, the extrusion plate 61 is pushed into the drip irrigation channel 1, the outer side of the movable column 57 is movably connected with the fixed ring 510, the piezoelectric crystal 59 is extruded along with the movement of the movable column 57, the compression spring 58 is also extruded, current is generated at two ends of the piezoelectric crystal 59, the electric telescopic rod 62 is electrically connected with the piezoelectric crystal 59, when the piezoelectric crystal 59 is extruded, the electric telescopic rod 62 extends downwards, the scraper 63 dredges the blocked place, the electric telescopic rod 62 is withdrawn, the movable column 57 is withdrawn outwards under the rotation of the motor 51, the compression spring 58 recovers to the original length, the piezoelectric crystal 59 disappears, and the extrusion force inside the drip irrigation channel 1 disappears, at this time, the pressure of the movable block 32 disappears, the conductive column 41 returns to the initial state under the elastic force of the limiting spring 43, the movable block 32 returns to the initial state, the circuit voltage is greater than the maximum access voltage of the voltage dependent resistor 44 at this time, the voltage dependent resistor 44 is disconnected, the motor 51 stops rotating, and the whole working process is completed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.