A portable irrigation device

Abstract

The application discloses a portable irrigation device, which comprises a portable box, a transmission device, an air bag, a control device and a power module, and a pipeline hole is formed in the portable box; the transmission device comprises a crank connecting rod mechanism, a sliding cam and a swing clamping piece; the crank connecting rod mechanism can drive the sliding cam to reciprocate left and right; the swing clamping piece is in contact with the sliding cam, and the reciprocating motion of the sliding cam can control the clamping and loosening of the swing clamping piece; one end of the air bag is connected with a water outlet pipeline, and the other end of the air bag is connected with a water inlet pipeline; the clamping and loosening of the swing clamping piece can control the generation of negative pressure in the air bag; the control device is used for controlling the start and stop of the crank connecting rod mechanism; and the power module is connected with the crank connecting rod mechanism and the control device respectively. The portable irrigation device can automatically control irrigation operation by utilizing the siphon principle and the negative pressure principle, has high irrigation efficiency, is portable, and can save manpower and material resources.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of irrigation, and particularly relates to a portable irrigation device. BACKGROUND

[0002] With the continuous deterioration of the environment, the desertification of land in China is becoming more and more serious. In order to repair the ecological system and at the same time play the effect of wind prevention and sand fixation, water and vegetation in the ecology are essential parts. Therefore, the irrigation technology in the desert is very important. Moderate and effective irrigation can form an ecological protection system of protective vegetation and ecological water, so as to reverse the process of desertification.

[0003] In some deserts and surrounding areas, in order to prevent the land desertification from becoming more and more serious, protective forests bearing the effect of wind prevention and sand fixation are usually planted. However, ordinary irrigation machinery is heavy and needs to be pulled by electricity, which is not suitable for use in desert areas. Therefore, for the irrigation of protective forests, people still use the traditional irrigation method, that is, a water pipe is led into the protective forest, and manual irrigation is used. Such method is time-consuming and laborious, needs to consume a large amount of resources, and has low irrigation efficiency. Similarly, in farmland irrigation, most of the irrigation work still needs to be manually connected with the water pipe. Such work load is very large, wastes a lot of time, and is very hard to work in hot weather. Therefore, it is urgent to design an irrigation device which can adapt to desert irrigation and farmland irrigation and is convenient and efficient in irrigation work. SUMMARY

[0004] The present application aims at overcoming the deficiencies in the prior art, and provides a portable irrigation device which can automatically control irrigation work by using the principle of siphon and the principle of negative pressure, has high irrigation efficiency, is portable, and saves manpower and material resources.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is to provide a portable irrigation device, which comprises: a portable box body, a pipeline hole is formed in the portable box body;

[0006] A transmission device is arranged in the portable box body, the transmission device comprises a crank connecting rod mechanism, a sliding cam and a swing clamping piece, the sliding cam is connected with the crank connecting rod mechanism, the crank connecting rod mechanism can drive the sliding cam to reciprocate left and right, and the swing clamping piece is in contact with the sliding cam and the left and right reciprocating movement of the sliding cam can control the clamping and loosening of the swing clamping piece.

[0007] An air bag is fixedly arranged inside the portable box body, one end of the air bag is connected with a water outlet pipeline, the other end of the air bag is connected with a water inlet pipeline, the water outlet pipeline and the water inlet pipeline respectively pass through corresponding pipeline holes on the portable box body, the air bag is in contact with the swing clamping piece, and the clamping and loosening of the swing clamping piece can control the generation of negative pressure in the air bag.

[0008] A control device is connected with the crank connecting rod mechanism and used for controlling the start and stop of the crank connecting rod mechanism.

[0009] And a power module is connected with the crank connecting rod mechanism and the control device respectively.

[0010] Further, the air bag comprises an air suction valve and an air exhaust valve, the air suction valve and the air exhaust valve are both one-way valves, the air suction valve is connected with the water inlet pipeline, and the air exhaust valve is connected with the water outlet pipeline.

[0011] Further, the crank connecting rod mechanism comprises a motor, a crank, a first connecting rod, a second connecting rod and a connecting rod sliding seat, a transmission shaft of the motor is connected with the crank, one end of the first connecting rod is hingedly connected with the crank, the other end of the first connecting rod is hingedly connected with one end of the second connecting rod, the second connecting rod is arranged on the connecting rod sliding seat and can slide left and right along the connecting rod sliding seat under the driving of the first connecting rod, and the sliding cam is arranged on the other end of the second connecting rod.

[0012] Further, the crank comprises a stroke disc and a hinge screw, the transmission shaft of the motor is arranged along a central axis of the stroke disc and connected with the stroke disc, a plurality of threaded connection holes are arranged on the stroke disc in the same direction as the central axis of the stroke disc, and the distances from the central axes of the threaded connection holes to the central axis of the stroke disc are not equal.

[0013] Further, the first connecting rod comprises a threaded section and a nut section, the threaded section and the nut section are threadedly connected, and the length of the first connecting rod can be adjusted through the threaded connection.

[0014] Further, the swing clamping piece comprises an upper clamping piece and a lower clamping piece which are hingedly connected with each other, the upper clamping piece comprises a first clamping end and a first tail end, the lower clamping piece comprises a second clamping end and a second tail end, the air bag is arranged between the first clamping end and the second clamping end, and the sliding cam is arranged between the first tail end and the second tail end.

[0015] Further, the control device comprises a communication module, a sensor module and a probe, the probe is connected with the sensor module and is used for transmitting detection information to the sensor module, the sensor module is connected with the communication module and is used for transmitting the information detected by the probe to the communication module, the communication module is connected with the motor and is used for controlling the start and stop of the motor according to the received external information or the information transmitted by the sensor module.

[0016] Further, an electromagnetic valve is arranged on the water outlet pipeline, the electromagnetic valve is connected with the communication module, and the communication module is used for controlling the opening and closing of the water outlet pipeline according to the received external information or the information transmitted by the sensor module.

[0017] Further, the power module is connected with the motor, the communication module and the sensor module respectively.

[0018] Further, the power module is a solar power supply system, the solar power supply system comprises a solar panel, a solar storage battery and a solar controller, the solar panel is arranged outside the portable box body, and the solar storage battery and the solar controller are arranged inside the portable box body.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] 1. The present application can realize remote opening and closing of the irrigation device through a remote control terminal, and is simple to operate, widely applicable to a wide range of people and saves human resources. The present application can also realize automatic irrigation through the start of the sensor module, improve irrigation efficiency, and realize unmanned, remote and automatic irrigation of vegetation.

[0021] 2. The present application has small volume, light weight and is easy to carry, and does not need to be charged. It can not only be applied to desert areas, but also be applied to irrigation operations in farmland reservoir hilly, fruit trees and other areas where water and electricity are not convenient, bringing great convenience to users, and can be widely used in a wide range of scenarios, and has a very broad application prospect.

[0022] 3. The present application is suitable for use in terrain with high and low differences, and uses the siphon principle and negative pressure principle to pump water for irrigation, continuously pumping water from high places to irrigate vegetation, with high irrigation efficiency, simple equipment structure and convenient operation, low cost but high practicality, power saving, environmental protection and cost saving.

[0023] 4. The present application uses a solar panel to supply power to a lead-acid battery, automatically charges the battery, and can be used for a long time to meet the irrigation needs of outdoor use.

[0024] The present application will be further described in detail below with reference to the accompanying drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 Fig. 2 is a plan view of the internal structure of the portable box of the present application.

[0026] Figure 2 Fig. 3 is a front view of the internal structure of the portable box of the present application.

[0027] Figure 3 Fig. 4 is an enlarged view of A of Fig. 1. Figure 2

[0028] Figure 4 Fig. 5 is a schematic view of the structure of the portable box of the present application.

[0029] Figure 5 Fig. 6 is a schematic view of the structure of the air bag of the present application.

[0030] Figure 6 Fig. 7 is a schematic view of the structure of part of the circuit of the present application.

[0031] Figure 7 Fig. 8 is a motion diagram of the motion of the slider cam mechanism driven by the crank and connecting rod mechanism of the present application.

[0032] Figure 8 Fig. 9 is a relationship diagram of the ratio of the length of the crank to the length of the connecting rod and the included angle when the maximum speed of the slider (e = 0) of the present application.

[0033] BRIEF DESCRIPTION OF THE DRAWINGS

[0034] 1 - portable box; 20 - crank; 20-1 - stroke disc; 20-2 - hinge screw;

[0035] 20-3 - threaded connection hole; 21 - motor; 22 - first connecting rod; 22-1 - threaded section;

[0036] 22-2 - nut section; 23 - second connecting rod; 24 - connecting rod slide; 3 - sliding cam;

[0037] 4 - air bag; 40 - air suction valve; 41 - air exhaust valve; 5 - swing clamping member;

[0038] 6 - water inlet pipe; 7 - water outlet pipe; 8 - pipe hole; 9 - electromagnetic valve;

[0039] 10 - solar battery; 11 - solar controller; 12 - solar panel; DETAILED DESCRIPTION

[0040] ​Embodiments of the present application will be described in more detail below with reference to the drawings. While several embodiments of the application are shown in the drawings, it is understood that the application can be embodied in various forms and should not be interpreted in a limited sense. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It is understood that the drawings and embodiments are for illustrative purposes only and are not intended to limit the scope of the present application.

[0041] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0042] As shown in Figures 1-8 The present application provides a portable irrigation device, which comprises a portable box 1, a transmission device, an air bag 4, a control device and a power module. The portable box 1 is provided with pipeline holes 8. The transmission device is arranged in the portable box 1. The transmission device comprises a crank linkage mechanism, a sliding cam 3 and a swing clamping piece 5. The sliding cam 3 is connected with the crank linkage mechanism, and the crank linkage mechanism can drive the sliding cam 3 to reciprocate left and right. The swing clamping piece 5 is in contact with the sliding cam 3, and the reciprocating motion of the sliding cam 3 can control the clamping and loosening of the swing clamping piece 5. The air bag 4 is fixedly arranged in the portable box 1. One end of the air bag 4 is connected with an outlet pipeline 7, and the other end of the air bag 4 is connected with an inlet pipeline 6. The outlet pipeline 7 and the inlet pipeline 6 respectively pass through the corresponding pipeline holes 8 of the portable box 1. The air bag 4 is in contact with the swing clamping piece 5, and the clamping and loosening of the swing clamping piece 5 can control the generation of negative pressure in the air bag 4. The control device is connected with the crank linkage mechanism and is used for controlling the start and stop of the crank linkage mechanism. The power module is connected with the crank linkage mechanism and the control device.

[0043] In this embodiment, the air bag 4 comprises an air suction valve 40 and an air exhaust valve 41. Both the air suction valve 40 and the air exhaust valve 41 are one-way valves. The air suction valve 40 is connected with the inlet pipeline 6, and the air exhaust valve 41 is connected with the outlet pipeline 7. When the air bag 4 is extruded, the air exhaust valve 41 is opened, and the air suction valve 40 is closed, so that the air in the air bag 4 is exhausted. When the air bag 4 returns, the air suction valve 40 is opened, and the air exhaust valve 41 is closed, so that the water is sucked into the air bag 4 due to the negative pressure generated in the air bag 4.

[0044] In the embodiment, the crank connecting rod mechanism comprises a motor 21, a crank 20, a first connecting rod 22, a second connecting rod 23 and a connecting rod sliding seat 24, the transmission shaft of the motor 21 is connected with the crank 20, one end of the first connecting rod 22 is hinged with the crank 20, the other end of the first connecting rod 22 is hinged with one end of the second connecting rod 23, the second connecting rod 23 is arranged on the connecting rod sliding seat 24 and can slide left and right along the connecting rod sliding seat 24 under the driving of the first connecting rod 22, and the sliding cam 3 is installed on the other end of the second connecting rod 23.

[0045] In the embodiment, the crank 20 comprises a stroke disc 20-1 and a hinge screw 20-2, the transmission shaft of the motor 21 is arranged along the central axis of the stroke disc 20-1 and is connected with the stroke disc 20-1, threaded connection holes 20-3 are arranged on the stroke disc 20-1 in the same direction as the central axis direction of the stroke disc 20-1, the number of the threaded connection holes 20-3 is plural, and the distances from the central axes of the threaded connection holes 20-3 to the central axis of the stroke disc 20-1 are not equal.

[0046] The first connecting rod 22 comprises a threaded section 22-1 and a nut section 22-2, the threaded section 22-1 and the nut section 22-2 are connected in threaded cooperation, and the length of the first connecting rod 22 can be adjusted through threaded cooperation. One end of the threaded section 22-1 is hinged with the hinge screw 20-2, the other end of the threaded section 22-1 is connected with one end of the nut section 22-2 in threaded cooperation, and the other end of the nut section 22-2 is hinged with one end of the second connecting rod 23.

[0047] In the embodiment, the swing clamping piece 5 comprises upper and lower clamping pieces hinged with each other, the upper clamping piece comprises a first clamping end and a first tail end, the lower clamping piece comprises a second clamping end and a second tail end, the air bag 4 is arranged between the first clamping end and the second clamping end, and the sliding cam 3 is arranged between the first tail end and the second tail end.

[0048] The control device includes a communication module, a sensor module, and a probe. The communication module can connect to a remote control terminal and receive information sent by the remote control terminal. The remote control terminal and the communication module transmit signals via a wireless network. To ensure communication stability, the wireless network uses 4G IoT network communication. 4G network is a wireless communication technology that uses LTE Long-Term Evolution technology to transmit data, featuring high speed, low latency, high efficiency, and stability. The communication module includes a circuit board capable of 4G network communication. By installing an IoT card on the communication module, data transmission and reception between the remote control terminal and the communication module are realized. The remote control terminal can be a mobile phone or tablet, or other device capable of 4G network communication. The communication module is electrically connected to the sensor module.

[0049] In this embodiment, the communication module includes a first relay and a second relay, which are connected in parallel. The first relay is directly connected to the motor 21 of the crank-slider mechanism, and the second relay is connected to the sensor module. The remote control terminal transmits signals to the communication module to energize the first relay, thereby controlling the motor 21 of the crank-slider mechanism to start; and to energize the second relay, thereby controlling the sensor module to be energized. The sensor module includes a humidity sensor and a sensor relay. In this embodiment, the probe is a humidity sensor. The humidity sensor is connected to the sensor relay and is used to measure soil moisture and convert the humidity signal into a corresponding voltage, thereby controlling the sensor relay to engage and disengage. The sensor relay is connected to the motor 21 of the crank-slider mechanism. When the sensor relay is engaged, the motor 21 starts; when the sensor relay is disengaged, the motor 21 stops.

[0050] A solenoid valve 9 is installed on the water outlet pipe 7. The solenoid valve 9 is a normally closed solenoid valve. The solenoid valve 9 is connected to the communication module, and the communication module is used to control the opening and closing of the water outlet pipe 7. Specifically, the solenoid valve 9 is connected in series with the first relay and the second relay of the communication module, that is, the solenoid valve 9 is connected to the common terminal of the second relay and the common terminal of the first relay of the communication module. When the first relay is energized or the second relay is energized and engaged, the solenoid valve 9 will be activated.

[0051] The power module is connected to the motor 21 of the crank-slider mechanism, the communication module, and the sensor module, respectively.

[0052] The power module is a solar power system, the solar power system comprises a solar panel 12, a solar storage battery 10 and a solar controller 11, the solar storage battery 10 in the embodiment is a 4500mAh lead-acid battery, and long-time use can be ensured. The solar panel 12 is fixedly arranged outside the portable box body 1, and the solar storage battery 10 and the solar controller 11 are arranged inside the portable box body 1. The solar controller 11 is connected with the solar panel 12 and the solar storage battery 10 respectively. The solar panel 12 is used for supplying power to the solar storage battery 10 by using solar energy, so that sufficient power supply is ensured, and the purpose of long-time outdoor work is achieved.

[0053] In the embodiment, the load end positive pole of the solar controller 11 is connected with the power supply positive pole of the communication module, so as to ensure normal and stable operation of the communication module throughout the year; the load end positive pole of the solar controller 11 is also connected with the first relay normally open end of the communication module, the common end of the first relay of the communication module is connected with the positive pole of the motor 21, and the negative pole of the motor 21 is connected with the load end negative pole of the solar, so that power is supplied to the motor 21 when the first relay of the communication module is powered by the remote control end, the motor 21 is remotely started and stopped, and irrigation is performed.

[0054] The working principle of the application is as follows:

[0055] The application is suitable for use in a terrain with height difference, the application is placed in a position with lower terrain, a water inlet pipe is connected to the water inlet pipe 6, the water inlet pipe is inserted into a water source or an irrigation channel at a position with higher terrain, a water outlet pipe is connected to the water outlet pipe 7 and placed in an area to be irrigated.

[0056] The remote control end transmits a control signal to the communication module through a 4G network to start the motor 21, two control switches are arranged on the remote control end and correspond to two control modes of starting the motor 21.

[0057] 1. Manual control mode. The manual control mode comprises an immediate start mode and a timing control mode. The flow of the immediate start mode is as follows: the remote control end sends a motor 21 start signal, the signal is transmitted to the communication module through a 4G network, the communication module receives the signal, controls the first relay to be attracted, and thus the motor 21 is started; the flow of the timing control mode is as follows: the time for starting the motor 21 is set on the remote control end, when the predetermined time is reached, the remote control end sends a signal to the communication module, the communication module receives the signal, controls the first relay to be attracted, and thus the motor 21 and the electromagnetic valve 9 are started, and irrigation work is started.

[0058] When irrigation needs to be stopped, the remote control end sends a motor 21 stop signal, the first relay is powered off, and the motor 21 and the electromagnetic valve 9 are both stopped.

[0059] 3 Automatic control mode. The automatic control mode is started by remote control terminal, and the communication module obtains the signal, controls the second relay to be powered and attracted, the sensor module is powered on, and the electromagnetic valve 9 is opened. The probe of the humidity sensor will detect the soil humidity and transmit it to the LM393 comparator in the humidity sensor. When the soil humidity is detected to be lower than the set value, the humidity sensor outputs a high level, the sensor relay is attracted, and the motor 21 connected therewith is started.

[0060] When the motor 21 starts to run, the motor 21 runs to drive the crank slider mechanism to run and push the cam 3 to make left-right reciprocating motion. When the cam 3 moves to the swing clamping piece 5, the follower swing clamping piece 5 is pressed by the cam 3 to start swinging and thus press the air bag 4. The air in the air bag 4 is discharged through the exhaust valve 41. When the cam 3 moves away, the follower returns to normal and releases the air bag 4. The air bag 4 forms a pressure difference between inside and outside, and the water flow enters the pipeline due to the pressure difference and flows to the lower-lying area to be irrigated.

[0061] Since the siphon principle is applied in the application, when the motor 21 is started for the first time, the siphon effect occurs and irrigation is continuously carried out. The running state of the motor 21 does not affect the siphon effect which has occurred. Therefore, when the motor 21 and the electromagnetic valve 9 are stopped at the same time in the manual control mode, the siphon effect will accumulate pressure in the pipeline, so that the application can provide water with pressure in time in the mode of pressure irrigation, for example, when the water outlet is provided with a sprinkler pipe. In the automatic control mode, the motor 21 is started and stopped according to the state of the soil humidity, and the electromagnetic valve 9 is always in the open state. Therefore, when irrigation is completed, the automatic control switch is closed to avoid over-irrigation.

[0062] In the embodiment, the related irrigation data involved are calculated by the following method:

[0063] 1. Siphon pipe hydraulic calculation

[0064] 1. Siphon pipe water capacity Q calculation

[0065] Since the siphon pipe line is short, the local head loss and the flow velocity head cannot be ignored compared with the head loss along the way, and must be considered at the same time, so the siphon pipe hydraulic calculation is carried out according to the short pipe. The hydraulic calculation of the short pipe is divided into two kinds of free outflow and submerged outflow. According to whether the siphon pipe outlet is below or above the water surface, it is judged as submerged outflow or free outflow. The flow outflow formula of the siphon pipe is: Wherein: Q is the flow m 3 / s, μ c is the flow coefficient;

[0066] If it is free outflow,

[0067] If submerged outflow,

[0068] λ is the head loss coefficient along the way, where R is the hydraulic radius, n is the roughness coefficient, n = 0.011 for hose; l is the length of the siphon m; d is the diameter of the siphon m; ζ is the local head loss coefficient, where θ is the bend angle; α is the kinetic energy correction coefficient, α = 1.0; A is the cross-sectional area of the siphon m 2 ; h is the water level difference upstream and downstream of the siphon m.

[0069] 2 The maximum installation height of the siphon h s Calculation

[0070] Take the lowest water surface 0-0 as the reference surface when the siphon is running, and the maximum vacuum height hv is 7.0 m. The energy equation of sections 1 and 2 is obtained:

[0071]

[0072] Then:

[0073]

[0074] In order to ensure the normal work of the siphon, the height of the upstream water surface from the top of the siphon hump should not exceed h s .

[0075] 3 Calculation of the minimum submerged depth S

[0076] In order to prevent the siphon inlet from producing a through funnel vortex and bringing in air to damage the siphon effect, the minimum submerged depth S of the siphon can be estimated according to the following formula:

[0077] S = (1-1.57) Fr0d;

[0078] Where: Fr0 is the water flow Froude number of the siphon section; v0 is the flow velocity of the siphon section m / s; d is the diameter of the siphon m

[0079] 2. Calculation of pipeline flow

[0080] The pipeline flow is the product of the cross-sectional area of the pipe material and the flow velocity. The volume or weight of the fluid passing through a certain cross section in a certain time is called flow, and the unit is L / s or m 3 / h. When the fluid flows in the pipeline, the distance flowed in a certain time is the flow velocity, and the flow velocity generally refers to the average flow velocity of the fluid, with the unit of m / s.

[0081] Flow is proportional to the cross-sectional area of the pipe and the flow rate, the relationship between the three:

[0082] Q = (πD / 2) / 4 x v x 3600 x (m 3 / h)

[0083] Q = (πD / 2) / 4 x v x 3600 x (m 3 / h); D - pipe diameter m; V - fluid average speed m / s.

[0084] 3. The maximum speed of the slider in the slider-crank mechanism is calculated

[0085] A certain offset slider-crank mechanism is shown in Figure 6 . In the figure, 1 is a crank 20, 2 is a connecting rod 22, and 3 is a slider 23. The length of the crank 20 is l1, the length of the connecting rod 22 is l2, the eccentric distance is e, and the angular velocity of the crank 20 is ω1. A rectangular coordinate system is established as shown in Figure 6 .

[0086] Let the crank 20 angle be φ1 and the connecting rod 22 angle be φ2. The closed vector equation of the mechanism is:

[0087]

[0088] Its complex exponential equation is

[0089]

[0090] Equation 1 is expanded according to Euler's formula, and the imaginary part and the real part are taken respectively:

[0091]

[0092]

[0093] In the formula: λ = l1 / l2, which is the ratio of the length of the connecting rod 22 to the length of the crank 20; γ = e / l1, which is the ratio of the eccentric distance to the length of the crank 20

[0094] Differentiate equation 1 with respect to time t to get:

[0095]

[0096] In the formula: v c is the speed of the slider 23; ω2 is the angular velocity of the connecting rod 22.

[0097] Equation 4 is expanded according to Euler's formula to get:

[0098]

[0099]

[0100] From Figure 6It can be seen that the relationship between the angle α between the crank and the connecting rod and the crank rotation angle θ is:

[0101]

[0102] Formula 6 is a composite trigonometric function. According to the above derivation formula and known conditions, the position of the slider v under different rod lengths and eccentric distances can be solved by using the equation operation function of Excel software, as shown in Table 1. cmax

[0103] Table 1 Position of v under different rod lengths and eccentric distances Cmax

[0104]

[0105] From Table 1, it can be concluded that:

[0106] For the concentric crank-slider mechanism, the maximum speed of the slider C generally does not occur when the crank and the connecting rod are perpendicular to each other. As the rod length ratio λ increases, the crank and the connecting rod are closer to 90° at the maximum speed of the slider C. However, as λ increases, the maximum speed of the slider will decrease, as shown in Table 2. Figure 7

[0107] The above is only a preferred embodiment of the present application, not any limitation on the present application, any simple modification, change and equivalent structure change according to the technical essence of the present application to the above embodiment are still within the protection scope of the technical solution of the present application.​​​​

Claims

1. A portable irrigation device, characterized in that, include: A portable box (1) is provided with a pipe hole (8); The transmission device is installed inside the liftable housing (1). The transmission device includes a crank-connecting rod mechanism, a sliding cam (3), and a swing clamping member (5). The sliding cam (3) is connected to the crank-connecting rod mechanism, and the crank-connecting rod mechanism can drive the sliding cam (3) to reciprocate left and right. The swing clamping member (5) is in contact with the sliding cam (3), and the reciprocating left and right movement of the sliding cam (3) can control the clamping and releasing of the swing clamping member (5). An airbag (4) is fixedly installed inside the portable box (1). One end of the airbag (4) is connected to a water outlet pipe (7), and the other end of the airbag (4) is connected to a water inlet pipe (6). The water outlet pipe (7) and the water inlet pipe (6) pass through corresponding pipe holes (8) on the portable box (1). The airbag (4) is in contact with the swing clamping member (5), and the clamping and loosening of the swing clamping member (5) can control the generation of negative pressure inside the airbag (4). A control device, which is connected to the crank-connecting rod mechanism and is used to control the start and stop of the crank-connecting rod mechanism; The power module is connected to both the crank-connecting rod mechanism and the control device.

2. A portable irrigation device according to claim 1, characterized in that, The airbag (4) includes an inhalation valve (40) and an exhaust valve (41). Both the inhalation valve (40) and the exhaust valve (41) are one-way valves. The inhalation valve (40) is connected to the water inlet pipe (6), and the exhaust valve (41) is connected to the water outlet pipe (7).

3. A portable irrigation device according to claim 2, characterized in that, The crank-connecting rod mechanism includes a motor (21), a crank (20), a first connecting rod (22), a second connecting rod (23), and a connecting rod slide (24). The drive shaft of the motor (21) is connected to the crank (20). One end of the first connecting rod (22) is hinged to the crank (20), and the other end of the first connecting rod (22) is hinged to one end of the second connecting rod (23). The second connecting rod (23) passes through the connecting rod slide (24) and can slide left and right along the connecting rod slide (24) under the drive of the first connecting rod (22). The sliding cam (3) is installed on the other end of the second connecting rod (23).

4. A portable irrigation device according to claim 3, characterized in that, The crank (20) includes a stroke plate (20-1) and a hinge screw (20-2). The drive shaft of the motor (21) is arranged along the central axis of the stroke plate (20-1) and connected to the stroke plate (20-1). The stroke plate (20-1) has threaded connection holes (20-3) in the same direction as the central axis of the stroke plate (20-1). There are multiple threaded connection holes (20-3), and the distance from the central axis of each threaded connection hole (20-3) to the central axis of the stroke plate (20-1) is not equal.

5. A portable irrigation device according to claim 3, characterized in that, The first connecting rod (22) includes a threaded section (22-1) and a nut section (22-2), which are connected by a threaded engagement, and the length of the first connecting rod (22) can be adjusted by the threaded engagement.

6. A portable irrigation device according to claim 4 or 5, characterized in that, The swing clamping member (5) includes an upper clamping plate and a lower clamping plate that are hinged to each other. The upper clamping plate includes a first clamping end and a first tail end. The lower clamping plate includes a second clamping end and a second tail end. The airbag (4) is disposed between the first clamping end and the second clamping end. The sliding cam (3) is disposed between the first tail end and the second tail end.

7. A portable irrigation device according to claim 6, characterized in that, The control device includes a communication module, a sensor module and a probe. The probe is connected to the sensor module and is used to transmit detection information to the sensor module. The sensor module is connected to the communication module and is used to transmit the information detected by the probe to the communication module. The communication module is connected to the motor (21) and is used to control the start and stop of the motor (21) according to the received external information or the information transmitted by the sensor module.

8. A portable irrigation device according to claim 7, characterized in that, A solenoid valve (9) is provided on the water outlet pipe (7). The solenoid valve (9) is connected to the communication module, and the communication module is used to control the opening and closing of the water outlet pipe (7) according to the received external information or the information transmitted by the sensor module.

9. A portable irrigation device according to claim 7, characterized in that, The power module is connected to the motor (21), the communication module and the sensor module respectively.

10. A portable irrigation device according to claim 1 or 8, characterized in that, The power module is a solar power supply system, which includes a solar panel (12), a solar battery (10), and a solar controller (11). The solar panel (12) is located outside the portable housing (1), and the solar battery (10) and the solar controller (11) are both located inside the portable housing (1).

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