Method, mechanism and dripper screening machine for discharging drippers of embedded sheet type drip irrigation tape in clamping manner

Abstract

The invention belongs to the technical field of dripper screening, and particularly discloses a dripper clamping discharging method and mechanism for an embedded sheet type drip irrigation tape and a dripper screening machine.The method comprises the steps that after it is detected that no dripper exists in a conveying track and the dripper exists at an inlet of an input track, an outer circular ring of the screening machine is controlled to stop and rotate reversely; the water dropper returns to the screening machine again for continuous feeding; the structure comprises a first sensor fixedly arranged on a conveying track, a second sensor fixedly arranged at an inlet of the conveying track and a control unit, and after receiving a first detection signal that the first sensor does not detect the water dropper for N seconds and a second detection signal that the second sensor detects the water dropper, the control unit sends a driving instruction to control the motor to stop and reversely rotate. Through automatic detection and linkage control, accurate identification can be carried out, the stuck water droppers can be discharged, the rejection rate is reduced, and meanwhile, the continuity of a high-speed production line is ensured. The dripper screening device is suitable for screening drippers in a drip irrigation tape production line.

Description

Technical Field

[0001] The invention belongs to the technical field of dripper screening, and relates to a method and mechanism for discharging drippers of an inner-inserted drip irrigation belt, and a dripper screening machine. Background Art

[0002] Water-saving irrigation is the main measure taken by countries around the world to develop modern agriculture. Among them, drip irrigation is an advanced high-standard irrigation technology in water-saving irrigation. It lays a drip irrigation pipe with a flat dripper glued inside in the field to irrigate crops. The structure of the drip irrigation pipe is that the dripper is evenly glued and pressed on the inner wall of the plastic hose. The dripper is provided with a waterway and a drip hole leading to the outside of the pipe. The water entering the drip irrigation pipe drips directly to the roots of the plants through the waterway and drip hole on the dripper.

[0003] The inner-insert dripper is a type of dripper commonly used in actual production. In the production process of drip irrigation pipes, the inner-insert drippers selected by the dripper screening device need to be embedded in the extruded plastic hose, and then the plastic hose is punched at the location of the inner-insert dripper by the punching device to form the drip irrigation pipe. The inner-insert dripper has a front and back side. The structure of a certain type of inner-insert dripper is as follows Figure 1 As shown, during the production process of the inner-inserted drip irrigation tape, it is necessary to ensure that the direction of the inner-inserted drippers screened by the dripper screening device is correct, otherwise quality problems will occur during subsequent drilling.

[0004] The Chinese utility model patent with the authorization announcement number CN202823900U discloses an inner-inserted dripper screening device, including a frame, an inner disc, an outer ring, an outer retaining ring, an arc groove, an air blowing channel and a conveying track for conveying the inner-inserted dripper, the inner disc and the outer ring are rotatably connected to the frame, the inner disc is located in the outer ring, the outer retaining ring is arranged on the upper surface of the outer ring, the outer retaining ring is provided with an arc groove, and a conveying channel is formed between the arc groove and the upper surface of the outer ring to deliver the dripper to the conveying track. It uses the speed difference between the inner disc and the outer ring to screen the dripper, and discharges the dripper on the opposite side through the arc groove and the air blowing channel during the delivery process of the dripper, thereby ensuring that the dripper passes through the conveying track in the correct posture. As the processing speed of the drip irrigation tape production line increases, the dripper screening machine is in a high-speed operation state during the dripper screening process, and the dripper is prone to get stuck at the entrance of the conveying track inside the dripper screening machine. Because the outer ring is constantly rotating under the drive of the motor, the stuck dripper is squeezed by the subsequent drippers and cannot be unblocked by air blowing alone, resulting in the dripper screening machine being unable to supply drippers to the production line normally, causing the drip irrigation pipe production line to shut down. Therefore, a mechanism that can identify and solve the stuck dripper is needed to improve the reliability of the dripper screening machine and ensure the continuous operation of the production line. Summary of the invention

[0005] The object of the present invention is to provide a method for discharging the stuck drip heads of an inlaid drip tape, accurately identifying the stuck drip heads through the composite condition judgment of "entrance retention + exit absence", and completing the discharging action of the stuck drip heads by reversing the motor and blowing air; The second object of the present invention is to provide an inlaid drip tape drip head stuck discharging mechanism, which can accurately identify and discharge the stuck drip heads when the drip heads are stuck; The third object of the present invention is to provide a drip head screening machine including the above-mentioned inlaid drip tape drip head stuck discharging mechanism.

[0006] In order to achieve the above objects, the technical solutions adopted by the present invention are as follows: A method for discharging the stuck drip heads of an inlaid drip tape. After successively detecting that there is no drip head in the conveying track and there is a drip head at the entrance of the input track, the outer ring of the screening machine is controlled to stop and reverse, so that the drip head returns to the screening machine to continue feeding.

[0007] Preferably, it includes the following steps carried out in sequence: S1. During the forward rotation of the outer ring, the detection mechanism determines whether the drip head is stuck: judge whether the two conditions of continuously not detecting the drip head in the conveying track for N seconds and detecting the drip head at the entrance of the conveying track are met; N is a positive number; If not, continue the determination; If so, execute step S2; S2. Brake the outer ring of the screening machine and make the outer ring rotate in the reverse direction; discharge the stuck drip head during the reverse rotation of the outer ring of the screening machine; S3. After detecting that there is no drip head at the entrance of the conveying track, the outer ring stops rotating in the reverse direction, starts rotating in the forward direction and returns to step S1.

[0008] An inlaid drip tape drip head stuck discharging mechanism using the above-mentioned method for discharging the stuck drip heads of an inlaid drip tape, including a first sensor fixed on the conveying track for detecting the drip head, a second sensor fixed at the entrance of the conveying track for detecting the drip head, and a control unit; The signal output ends of the first sensor and the second sensor are connected to the signal input end of the control unit; the signal output end of the control unit is connected to the control end of the motor that controls the forward and reverse rotation of the outer ring; After receiving the first detection signal of continuously not detecting the drip head output by the first sensor and the second detection signal of detecting the drip head output by the second sensor, the control unit sends a driving instruction to control the motor to stop and reverse.

[0009] Preferably, it further includes a removing mechanism for discharging the stuck drip heads; The rejection mechanism is fixedly arranged on the side wall of the outer retaining ring; The signal output end of the control unit is connected to the control end of the rejection mechanism; After receiving the first detection signal and the second detection signal, the control unit sends a rejection instruction to control the rejection mechanism to discharge the stuck drip head.

[0010] Preferably, the rejection mechanism includes a blowing nozzle, a solenoid valve and a gas source; The blowing end of the blowing nozzle faces the drip head, and the other end is connected to the gas source through the solenoid valve; The signal output end of the control unit is controllably connected to the solenoid valve.

[0011] Preferably, at least one braking mechanism for stopping the rotation of the outer ring is fixedly arranged around the outer ring; The signal output end of the control unit is connected to the control end of the braking mechanism; After receiving the first detection signal and the second detection signal, the control unit sends a braking instruction to control the braking mechanism to perform a braking action.

[0012] Preferably, the braking mechanism includes a brake rod that presses against the outer side of the outer ring of the screening machine during braking to cause braking and a first cylinder that pushes the brake rod to perform braking; The control end of the first cylinder is connected to the signal output end of the control unit.

[0013] Preferably, an alarm is further included; the signal input end of the alarm is connected to the signal output end of the first sensor; the alarm gives an audible and visual alarm after receiving the first detection signal.

[0014] Preferably, the first sensor and the second sensor are respectively one of a photoelectric sensor, a capacitive sensor, an inductive sensor, an ultrasonic sensor, a pressure sensor or a mechanical induction sensor.

[0015] A drip head screening machine is equipped with the above-mentioned inlaid drip irrigation tape drip head stuck position discharging mechanism.

[0016] Due to the adoption of the above technical solution, compared with the prior art, the technical progress achieved by the present invention is as follows: (1) The present invention uses the reverse rotation of the motor to discharge the stuck drip head. The reverse rotation of the motor can quickly relieve the extrusion pressure on the stuck drip head, avoid mechanical damage and drip head deformation, effectively solve the blockage problem that cannot be handled by traditional single air blowing, and through automatic detection and linkage control, reduce the rejection rate while ensuring the continuity of the high-speed production line, and at the same time reduce energy consumption and maintenance costs, providing a practical solution for the intelligent development of modern agricultural equipment; (2) The present invention adds a rejection mechanism, which removes the stuck dripper when the outer ring reverses, thereby reducing the reversal distance of the outer ring, shortening the unblocking response time, and avoiding energy waste caused by reversal; (3) The present invention adds a brake mechanism that can instantly stop the rotation of the outer ring, completely eliminate the dynamic squeezing force on the stuck dripper, and avoid secondary jamming of the dripper due to inertial displacement during the reversal process; precise braking immediately stops the push of subsequent drippers, creating a zero-pressure environment for the reversal action, ensuring that the dripper is completely out of the mechanical bite state during reversal; combined with the rejection mechanism, a three-stage unblocking process of "braking-retracting-clearing" can be formed, while reducing the motor reversal torque requirement and extending the service life of the equipment; (4) The present invention can achieve millisecond-level rapid response by precisely adjusting the action of the first cylinder through the control unit, ensuring that the brake lever can complete braking at the moment the stuck signal is detected; the linear thrust characteristics of the cylinder make the braking force evenly distributed, avoiding mechanical impact damage to the dripper; and the cylinder structure is simple and reliable, with low maintenance cost, which improves the practicality and reliability of the present invention. (5) The rejection mechanism in the present invention fixes the blowing nozzle on the side wall of the outer retaining ring and faces the dripper, which can form a directional air flow beam and accurately cover the escape trajectory of the stuck dripper; at the same time, the linkage between the solenoid valve and the control unit realizes a 10ms-level air path on-off response, which forms a millisecond-level coordination with the brake-reverse action, greatly improving the discharge efficiency of the stuck dripper; blowing air only during reversal improves the utilization rate of the air source, thereby improving the efficiency and stability of the present invention; (6) The present invention can accurately distinguish between real stuck and normal delivery interval through dual verification of continuous monitoring by the inlet sensor and delayed judgment by the outlet sensor. This composite condition judgment of "inlet retention + outlet missing" can effectively avoid false triggering of a single sensor due to interference such as dripper flipping and vibration, greatly improving the recognition accuracy of dripper stuck. (7) The present invention adds an alarm, which triggers an audible and visual alarm to immediately alert the operator of the risk of dripper jam or flow interruption, assisting the operator to quickly locate the fault point, making manual intervention more timely, reducing troubleshooting time, improving equipment maintenance efficiency, and avoiding waste due to equipment blockage.

[0017] The present invention belongs to the technical field of dripper screening. Through automatic detection and linkage control, the dripper can be accurately identified and discharged when it is stuck, thereby reducing the scrap rate while reducing energy consumption and maintenance costs, and ensuring the continuity of the high-speed production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0019] In the accompanying drawings: Figure 1 is a structural diagram of an inlaid emitter of a certain type; Figure 2 is a process flow chart of Embodiment 1 of the present invention; Figure 3 is a schematic diagram of the installation positions of the first sensor, the second sensor, the braking mechanism, and the rejection mechanism in the top view state in Embodiment 2 of the present invention; Figure 4 is a schematic diagram of signal connection in Embodiment 2 of the present invention; Figure 5 is a structural diagram of the braking mechanism in Embodiment 2 of the present invention.

[0020] In the figure: 1, conveying track; 2, first sensor; 3, second sensor; 4, rejection mechanism; 5, braking mechanism; 51, braking rod; 52, first cylinder. Detailed implementation manners

[0021] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0022] Embodiment 1 A method for discharging the inlaid emitter of a drip irrigation tape by card position This embodiment is a method for discharging the inlaid emitter of a drip irrigation tape by card position. After successively detecting that there is no emitter in the conveying track and there is an emitter at the input track entrance, the outer ring of the screening machine is controlled to stop and reverse, so that the emitter returns to the screening machine to continue feeding.

[0023] Specifically, as Figure 2 shown, this embodiment includes the following steps carried out in sequence: S1. During the forward rotation of the outer ring, the detection mechanism determines whether the emitter is stuck: Determine whether the two conditions that no emitter is detected in the conveying track for 1 second continuously and an emitter is detected at the entrance of the conveying track are satisfied; If not, continue the determination; If so, execute step S2.

[0024] In order to accurately distinguish the true jamming of the emitter from the normal conveying interval, a composite condition of continuous absence of outflow and retention at the entrance is used for judgment in this embodiment. When no emitter is detected in the conveying track continuously and an emitter is detected at the entrance of the conveying track, it is determined that the emitter is jammed.

[0025] S2. Brake the outer ring of the screening machine and make the outer ring rotate in the reverse direction; discharge the jammed emitter during the reverse rotation of the outer ring of the screening machine.

[0026] The blocked dripper cannot be discharged solely by blowing air because it is squeezed by the subsequent drippers. Therefore, after determining that the dripper is blocked, the outer ring is rotated reversely to relieve the squeezing pressure on the blocked dripper.

[0027] During the reverse rotation of the blocked dripper, it will fall into the screening machine. It is also possible to blow out the blocked dripper through a rejection mechanism, such as a blowing nozzle, during the reverse rotation of the blocked dripper.

[0028] S3. After detecting that there is no dripper at the entrance of the conveying track, the outer ring stops rotating reversely, starts rotating forward, and returns to step S1.

[0029] After the blocked dripper is discharged, no dripper is detected at the entrance of the conveying track. The outer ring stops rotating reversely, starts rotating forward, continues to continuously convey qualified drippers into the conveying track, and at the same time continues to execute the determination of whether the dripper is blocked in step S1.

[0030] In summary, the method used in this embodiment can accurately identify and discharge the blocked dripper when the dripper is blocked through composite condition judgment and the actions of reverse rotation and blowing, greatly shortening the blockage removal response time and ensuring the continuity of the high-speed production line.

[0031] Embodiment 2 A mechanism for discharging blocked drippers of an inlaid drip irrigation tape This embodiment is an improvement on the Chinese utility model patent with the authorization announcement number CN202823900U. The improvement points are emphasized, and the parts not described are the same as the prior art.

[0032] As Figures 3 to 5 shown, this embodiment is a mechanism for discharging blocked drippers of an inlaid drip irrigation tape, including a first sensor 2 fixed on the conveying track 1 for detecting drippers, a second sensor 3 fixed at the entrance of the conveying track 1 for detecting drippers, and a control unit. The signal output ends of the first sensor 2 and the second sensor 3 are connected to the signal input end of the control unit; the signal output end of the control unit is connected to the control end of the motor that controls the forward and reverse rotation of the outer ring.

[0033] For the convenience of installation, in this embodiment, the first sensor 2 is arranged at the outlet of the conveying track 1, and its installation position can be adjusted according to the actual situation as long as the first sensor 2 is arranged on the conveying track 1.

[0034] After the control unit receives the first detection signal that no dripper is detected by the first sensor 2 for 1 second continuously and the second detection signal that a dripper is continuously detected by the second sensor 3, it sends a driving instruction to control the motor to rotate reversely. During the reverse rotation of the blocked dripper, it will fall into the dripper screening machine. If the blocked dripper does not fall, the blowing mechanism of the equipment itself for rejecting reverse drippers can also discharge the blocked dripper.

[0035] In order to make the outer ring reverse faster, the present embodiment preferably designs three brake mechanisms 5, and the brake mechanisms 5 are evenly distributed on the outer surface of the outer ring. When it is detected that the dripper that needs to be reversed to remove the stuck dripper is removed, the control unit controls the outer ring to stop while controlling the brake mechanism 5 to operate, brake the outer ring, and then control the driving motor of the outer ring to reverse. Each brake mechanism 5 includes a brake rod 51 that presses against the outer side of the outer ring of the screening machine to brake it during braking, and a first cylinder 52 that pushes the brake rod 51 to brake. The signal output end of the control unit is connected to the control end of the first cylinder 52 of the three brake mechanisms 5.

[0036] At the same time, the above-mentioned action of discharging the stuck dripper requires the motor to rotate in the opposite direction for a large distance before it can be realized. In order to further improve this embodiment and make the stuck dripper be discharged more quickly, this embodiment also provides a rejection mechanism 4, which is fixed on the side wall of the outer retaining ring and is used to discharge the stuck dripper. The control signal output end of the control unit is connected to the control end of the electromagnetic valve in the rejection mechanism 4.

[0037] The rejection mechanism 4 includes a blowing nozzle, a solenoid valve and an air source fixed on the side wall of the outer retaining ring, the blowing end of the blowing nozzle faces the dripper, and the other end is connected to the air source through the solenoid valve. The control signal output end of the control unit is connected to the control end of the solenoid valve in the rejection mechanism 4.

[0038] After receiving the first detection signal and the second detection signal, the control unit first sends a brake command to control the first cylinder 52 in the three brake mechanisms 5 to perform a braking action, then sends a drive command to control the motor braking reverse, and sends a rejection command to control the opening of the solenoid valve to achieve blowing.

[0039] This embodiment also has an alarm. The signal input end of the alarm is connected to the signal output end of the first sensor 2, and the alarm generates an audible and visual alarm after receiving the first detection signal output by the first sensor 2.

[0040] Under normal circumstances, the motor drives the outer ring to rotate forward, and qualified drippers flow to the next process of the production line through the conveyor track 1. The above operation mode has been mentioned in the Chinese utility model patent with authorization announcement number CN202823900U and will not be described in detail.

[0041] Both the first sensor 2 and the second sensor 3 are photoelectric sensors. When this embodiment is in use, a composite condition of "entrance retention + exit absence" is adopted to judge whether the drip head is stuck: when the first sensor 2 does not detect the drip head for more than one second, a first detection signal is transmitted to the control unit; when the second sensor 3 detects the drip head at the entrance of the conveying track 1, a second detection signal is transmitted to the control unit. Only when the control unit receives the first detection signal and the second detection signal simultaneously, will it send a braking instruction, a driving instruction, and a rejection instruction. At this time, the first cylinder 52 in the three braking mechanisms 5 pushes the brake lever 51 to contact the outer ring, realizing the stop of the outer ring; then the brake is released, the motor performs a reverse action, and at the same time the solenoid valve is opened, and the air blowing nozzle blows out the stuck drip head, realizing the discharge of the stuck drip head. Then the brake is applied again and then released, the motor resumes forward rotation, and continues to continuously convey the qualified drip heads to the next process of the production line.

[0042] In this embodiment, in order to achieve precise control and avoid time waste, a multi-level execution timing sequence can be adopted: the first execution timing sequence executes the braking instruction, and the three groups of first cylinders 52 synchronously clamp the outer ring to achieve full braking; the second execution timing sequence executes the driving instruction, and the motor rotates in reverse to drive the outer ring to retreat, eliminating the extrusion force of the stuck drip head; the third execution timing sequence executes the rejection instruction, the solenoid valve is opened, and the air blowing nozzle blows out the stuck drip head, and at the same time the outer ring resumes forward rotation.

[0043] In this embodiment, the rejection mechanism 4 can also be a second cylinder, the second cylinder is arranged at the same position as the air blowing nozzle, and the control end of the second cylinder is connected to the signal output end of the control unit. After the second cylinder receives the rejection instruction, the power output end of the second cylinder (i.e., the free end of the push rod) moves towards the stuck drip head, and can also discharge the stuck drip head.

[0044] In this embodiment, the first sensor 2 and the second sensor 3 are photoelectric sensors, and can be changed to capacitive sensors, inductive sensors, ultrasonic sensors, pressure sensors or mechanical induction sensors according to actual situations, as long as the first sensor 2 and the second sensor 3 can realize the function of detecting the drip head.

[0045] In this embodiment, three braking mechanisms 5 are evenly arranged around the outer ring, and the number of braking mechanisms 5 can be adjusted according to actual situations, as long as it is ensured that the outer ring can be braked in time. The braking method of the braking mechanism 5 is that the brake lever 51 presses against the outside of the outer ring, and the brake lever 51 can also be pressed against the inside of the outer ring to achieve the braking effect.

[0046] In this embodiment, the braking mechanism 5 adopts the method of using the first cylinder 52 to push the brake lever 51 to press against the outside of the outer ring to realize the braking action. The braking mechanism 5 can also adopt other braking methods, such as: realizing braking by tightening the braking belt around the outer ring, and the braking belt can be a belt.

[0047] In addition, in this embodiment, the value of N is 1, and its value can be changed according to actual conditions. In actual applications, N can be set to a value between 1 and 3 according to the production line speed.

[0048] In summary, this embodiment can accurately identify and discharge the stuck dripper through automatic detection and linkage control, greatly shortening downtime, reducing energy consumption and maintenance costs, and ensuring the continuity of the high-speed production line.

[0049] Example 3 A dripper screening machine The present embodiment is a dripper screening machine, which adopts an inner-insert type dripper screening device disclosed in the Chinese utility model patent with publication number CN202823900U, and uses the control unit of the inner-insert type dripper screening device, but reprograms it to form the control unit of the present embodiment, and then adds other structures and components of the inner-insert type drip irrigation belt dripper positioning and discharge mechanism of Example 2.

Claims

1. A method for discharging the drip head clamping position of an inlaid drip irrigation tape, characterized in that, After successively detecting that there is no drip head in the conveying track and there is a drip head at the entrance of the input track, the outer ring of the screening machine is controlled to stop and reverse, so that the drip head returns to the screening machine to continue feeding.

2. The method for discharging the drip head clamping position of the inlaid drip irrigation tape according to claim 1, characterized in that, It includes the following steps carried out successively: S1. During the forward rotation of the outer ring, the detection mechanism is relied on to determine whether the drip head is stuck: judge whether the two conditions of continuously not detecting the drip head in the conveying track for N seconds and detecting the drip head at the entrance of the conveying track are met; N is a positive number; If not, continue to make the determination; If so, execute step S2; S2. Brake the outer ring of the screening machine and make the outer ring rotate in the reverse direction; during the reverse rotation of the outer ring of the screening machine, the stuck drip head is discharged; S3. After it is detected that there is no drip head at the entrance of the conveying track, the outer ring stops rotating in the reverse direction, starts to rotate in the forward direction and returns to step S1.

3. An inlaid drip irrigation tape emitter clamping and discharging mechanism, which uses an inlaid drip irrigation tape emitter clamping and discharging method as described in claim 1 or 2, characterized in that, It includes a first sensor fixed on the conveying track for detecting the drip head, a second sensor fixed at the entrance of the conveying track for detecting the drip head, and a control unit; The signal output ends of the first sensor and the second sensor are connected to the signal input end of the control unit; the signal output end of the control unit is connected to the control end of the motor controlling the outer ring; After the control unit receives the first detection signal of continuously not detecting the drip head output by the first sensor and the second detection signal of detecting the drip head output by the second sensor, it sends a driving instruction to control the motor to stop and reverse.

4. The inner inlaid drip irrigation tape dripper clamping and discharging mechanism according to claim 3, characterized in that It further includes an ejection mechanism for ejecting the stuck drip head; The ejection mechanism is fixed on the side wall of the outer retaining ring; The signal output end of the control unit is connected to the control end of the ejection mechanism; After the control unit receives the first detection signal and the second detection signal, it sends an ejection instruction to control the ejection mechanism to eject the stuck drip head.

5. The inlaid drip irrigation tape drip head clamping and discharging mechanism according to claim 4, characterized in that, The ejection mechanism includes a blowing nozzle, a solenoid valve and an air source; The blowing end of the blowing nozzle faces the drip head, and the other end is connected to the air source through the solenoid valve; The signal output end of the control unit is controllably connected to the solenoid valve.

6. The inner inlaid drip irrigation tape drip head clamping and discharging mechanism according to any one of claims 3 to 5, characterized in that, At least one braking mechanism for stopping the rotation of the outer ring is fixed around the outer ring; The signal output end of the control unit is connected to the control end of the braking mechanism; After the control unit receives the first detection signal and the second detection signal, it sends a braking instruction to control the braking mechanism to perform a braking action.

7. The inner inlaid drip irrigation tape drip head clamping and discharging mechanism according to claim 6, characterized in that, The braking mechanism includes a brake rod that presses against the outer side of the outer ring of the screening machine during braking to cause braking and a first cylinder that pushes the brake rod to perform braking; The control end of the first cylinder is connected to the signal output end of the control unit.

8. A drip head clamping and discharging mechanism for an inlaid drip irrigation tape according to any one of claims 3, 4, 5 or 7, characterized in that It further includes an alarm; the signal input end of the alarm is connected to the signal output end of the first sensor; the alarm gives an audible and visual alarm after receiving the first detection signal.

9. A drip head clamping and discharging mechanism for an inlaid drip irrigation tape according to any one of claims 3, 4, 5, 7 or 8, characterized in that The first sensor and the second sensor are respectively one of a photoelectric sensor, a capacitive sensor, an inductive sensor, an ultrasonic sensor, a pressure sensor or a mechanical induction sensor.

10. Dripper screening machine, characterized in that, An inner inlaid drip irrigation tape drip head stuck position discharging mechanism as described in any one of claims 3 to 9 is installed.

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