Portable irrigation device

Abstract

The invention discloses a portable irrigation device which comprises a liftable box body, a transmission device, an air bag, a control device and a power module, and a pipeline hole is formed in the liftable box body; the transmission device comprises a crank-link mechanism, a sliding cam and a swing clamping piece, the crank-link mechanism can drive the sliding cam to reciprocate left and right, the swing clamping piece is in contact fit with the sliding cam, and the left-right reciprocating motion of the sliding cam can control clamping and loosening of the swing clamping piece; 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, and clamping and loosening of the swing clamping piece can control generation of negative pressure in the air bag. The control device is used for controlling starting and stopping of the crank connecting rod mechanism. The power module is connected with the crank connecting rod mechanism and the control device. According to the siphon principle and the negative pressure principle, irrigation operation can be automatically controlled, the irrigation efficiency is high, portability is achieved, and meanwhile manpower and material resources are saved.

Description

Technical Field

[0001] The invention belongs to the technical field of irrigation, and in particular relates to a portable irrigation device. Background Art

[0002] With the continuous deterioration of the environment, land desertification in my country is becoming more and more serious. In order to repair the ecosystem and at the same time play the role of wind prevention and sand fixation, water and vegetation in the ecology are indispensable parts. Therefore, irrigation technology in the desert is very important; appropriate and effective irrigation can allow protective vegetation and ecological water to form an ecological protection system, thereby reversing the process of desertification.

[0003] In some deserts and surrounding areas, in order to prevent the land from becoming more and more desertified, shelterbelts that are responsible for windbreak and sand fixation are usually planted. However, ordinary irrigation machinery is heavy and requires electricity, which is not suitable for use in desert areas. Therefore, for the irrigation of shelterbelts, people still use traditional irrigation methods, that is, diverting water pipes to the shelterbelts and irrigating them manually. This method is time-consuming and labor-intensive, requires a lot of resources, and has low irrigation efficiency. Similarly, in farmland irrigation, most of the irrigation work still requires manual water pipe connection, which is very laborious, wastes a lot of time, and is very hard to work in hot weather. Therefore, it is urgent to design an irrigation device that can adapt to desert irrigation and farmland irrigation and has convenient and efficient irrigation work. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and to provide a portable irrigation device that utilizes the siphon principle and the negative pressure principle to automatically control irrigation operations, has high irrigation efficiency, is portable and saves manpower and material resources.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a portable irrigation device, comprising: a portable box body, wherein a pipeline hole is opened on the portable box body;

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

[0007] An airbag, wherein the airbag is fixedly arranged inside the portable case, one end of the airbag is connected to a water outlet pipe, and the other end of the airbag is connected to a water inlet pipe, the water outlet pipe and the water inlet pipe respectively pass through corresponding pipe holes on the portable case, the airbag contacts and cooperates with the swing clamping piece, and the clamping and loosening of the swing clamping piece can control the generation of negative pressure in the airbag;

[0008] A control device, the control device is connected to the crank-connecting rod mechanism and is used to control the start and stop of the crank-connecting rod mechanism;

[0009] and a power module, wherein the power module is connected to the crank-connecting rod mechanism and the control device respectively.

[0010] Furthermore, the airbag includes an air intake valve and an air exhaust valve, both of which are one-way valves, the air intake valve is connected to the water inlet pipe, and the air exhaust valve is connected to the water outlet pipe.

[0011] Furthermore, the crank-connecting rod mechanism includes a motor, a crank, a first connecting rod, a second connecting rod and a connecting rod slide, the transmission shaft of the motor is connected to the crank, one end of the first connecting rod is hinged to the crank, the other end of the first connecting rod is hinged to one end of the second connecting rod, the second connecting rod is inserted into the connecting rod slide and can slide left and right along the connecting rod slide under the drive of the first connecting rod, and the sliding cam is installed on the other end of the second connecting rod.

[0012] Furthermore, the crank includes a travel disk and a hinge screw, the transmission shaft of the motor is arranged along the central axis of the travel disk and connected to the travel disk, and a threaded connection hole is opened on the travel disk in the same direction as the central axis of the travel disk. The number of the threaded connection holes is multiple, and the distances from the central axis of each threaded connection hole to the central axis of the travel disk are not equal.

[0013] Furthermore, the first connecting rod includes a threaded section and a nut section, the threaded section and the nut section are threadedly matched and connected, and the length of the first connecting rod can be adjusted by the threaded matching.

[0014] Furthermore, the swing clamping member includes an upper clamping piece and a lower clamping piece hinged to each other, the upper clamping piece includes a first clamping end and a first tail end, the lower clamping piece includes a second clamping end and a second tail end, the airbag 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] Furthermore, 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 information detected by the probe to the communication module, and the communication module is connected to the motor and is used to control the start and stop of the motor according to received external information or according to information transmitted by the sensor module.

[0016] Furthermore, a solenoid valve is provided on the water outlet pipe, the solenoid valve is connected to the communication module, and the communication module is used to control the opening and closing of the water outlet pipe according to the received external information or the information transmitted by the sensor module.

[0017] Furthermore, the power module is connected to the motor, the communication module and the sensor module respectively.

[0018] Furthermore, the power module is a solar power supply system, which includes a solar panel, a solar battery and a solar controller. The solar panel is arranged on the outside of the portable box, and the solar battery and the solar controller are both arranged on the inside of the portable box.

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

[0020] 1. The present invention can remotely open and close the irrigation device through the remote control terminal, which is simple to operate, widely applicable to people and saves human resources. The present invention can also realize automatic irrigation by starting the sensor module, thereby improving irrigation efficiency and realizing unmanned, remote and automatic irrigation of vegetation.

[0021] 2. The present invention is small in size, light in weight, easy to carry, and does not require charging. It can be used not only in desert areas, but also in farmland, reservoirs, hills, fruit forests and other areas where water and electricity are inconvenient for irrigation operations, bringing great convenience to users, and has a wide range of applicable scenarios and a very broad application prospect.

[0022] 3. The present invention is applicable to terrain with height differences. It combines the siphon principle and the negative pressure principle for pumping irrigation, and continuously draws water from high places to irrigate vegetation. The irrigation efficiency is high, the equipment structure is simple and easy to operate, the cost is low but the practicability is high, it saves electricity and is environmentally friendly, and saves costs.

[0023] 4. The present invention uses solar panels to power lead-acid batteries, automatically replenishes power, can be used for a long time, and meets outdoor irrigation needs.

[0024] The present invention is further described in detail below through the accompanying drawings and examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a top view of the internal structure of the portable box of the present invention.

[0026] Figure 2 It is a front view of the internal structure of the portable box of the present invention.

[0027] Figure 3 for Figure 2 Enlarged view of point A.

[0028] Figure 4 It is a structural schematic diagram of the portable box of the present invention.

[0029] Figure 5 It is a schematic diagram of the structure of the airbag of the present invention.

[0030] Figure 6 It is a schematic diagram of the structure of part of the circuit of the present invention.

[0031] Figure 7 The figure is a motion diagram of the crank-connecting rod mechanism driving the slider cam mechanism to move.

[0032] Figure 8 It is the relationship between the ratio of the length of the crank to the connecting rod and the angle at the maximum speed of the slider (e=0).

[0033] Description of reference numerals:

[0034] 1—liftable box; 20—crank; 20-1—travel 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 segment; 23—second connecting rod; 24—connecting rod slide seat; 3—sliding cam;

[0037] 4—air bag; 40—intake valve; 41—exhaust valve; 5—swing clamp;

[0038] 6—water inlet pipe; 7—water outlet pipe; 8—pipe hole; 9—solenoid valve;

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

[0040] Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein, which are instead provided for a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] like Figure 1-8 As shown, the present invention provides a portable irrigation device, comprising a portable box 1, a transmission device, an air bag 4, a control device and a power module, wherein the portable box 1 is provided with a pipe hole 8; the transmission device is arranged in the portable box 1, and the transmission device comprises a crank connecting rod mechanism, a sliding cam 3 and a swing clamping member 5, wherein 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, and the swing clamping member 5 is in contact with and cooperates with the sliding cam 3, and the left and right reciprocating motion of the sliding cam 3 can control the clamping and loosening of the swing clamping member 5; The airbag 4 is fixedly arranged inside the portable case 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 respectively pass through corresponding pipe holes 8 on the portable case 1, the airbag 4 is in contact with the swing clamp 5, and the clamping and loosening of the swing clamp 5 can control the generation of negative pressure in the airbag 4; the control device is connected to the crank-connecting rod mechanism and the control device is used to control the start and stop of the crank-connecting rod mechanism; the power module is respectively connected to the crank-connecting rod mechanism and the control device.

[0043] In this embodiment, the airbag 4 includes an air intake valve 40 and an air exhaust valve 41, both of which are one-way valves, the air intake valve 40 is connected to the water inlet pipe 6, and the air exhaust valve 41 is connected to the water outlet pipe 7. When the airbag 4 is squeezed, the air exhaust valve 41 opens and the air intake valve 40 closes, thereby exhausting the air in the airbag 4; when the airbag 4 recovers, the air intake valve 40 opens and the air exhaust valve 41 closes, and negative pressure is generated in the airbag 4 to suck water.

[0044] In this embodiment, 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 transmission 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, 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 is inserted into 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, and the sliding cam 3 is installed on the other end of the second connecting rod 23.

[0045] In this embodiment, the crank 20 includes a travel disk 20-1 and a hinge screw 20-2. The transmission shaft of the motor 21 is arranged along the central axis of the travel disk 20-1 and connected to the travel disk 20-1. A threaded connection hole 20-3 is opened on the travel disk 20-1 in the same direction as the central axis of the travel disk 20-1. The number of the threaded connection holes 20-3 is multiple, and the distances from the central axes of each threaded connection hole 20-3 to the central axis of the travel disk 20-1 are not equal.

[0046] The first connecting rod 22 includes a threaded section 22-1 and a nut section 22-2, wherein the threaded section 22-1 and the nut section 22-2 are threadedly matched and the length of the first connecting rod 22 can be adjusted by threaded matching. One end of the threaded section 22-1 is hinged to the hinge screw 20-2, and the other end of the threaded section 22-1 is connected to one end of the nut section 22-2 by thread, and the other end of the nut section 22-2 is hinged to one end of the second connecting rod 23.

[0047] In this embodiment, the swing clamping member 5 includes an upper clamping piece and a lower clamping piece hinged to each other, the upper clamping piece includes a first clamping end and a first tail end, the lower clamping piece includes a second clamping end and a second tail end, the airbag 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, and the communication module can be connected to a remote control terminal to receive information sent by the remote control terminal. The remote control terminal and the communication module transmit signals through a wireless network. To ensure the stability of communication, the wireless network uses 4G Internet of Things network communication. The 4G network is a wireless communication technology that uses LTE Long-Term Evolution technology to transmit data. It has the characteristics of high speed, low latency, high efficiency and stability. The communication module includes a circuit board capable of 4G network communication. By installing an Internet of Things 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 device such as a mobile phone or a tablet that can communicate on a 4G network. 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, the first relay and the second relay are connected in parallel, the first relay is directly connected to the motor 21 of the crank slider, and the second relay is connected to the sensor module. The remote control terminal transmits a signal to the communication module, controls the first relay to be powered on, thereby controlling the motor 21 of the crank 20 slider 23 to start; controls the second relay to be powered on, thereby controlling the power supply of the sensor module, the sensor module includes a humidity sensor and a sensor relay, the probe in this embodiment is a humidity sensor, the humidity sensor is connected to the sensor relay and the humidity sensor is used to measure soil humidity and convert the humidity signal into a corresponding voltage, thereby controlling the sensor relay to be attracted and disconnected, the sensor relay is connected to the motor 21 of the crank slider mechanism, when the sensor relay is attracted, the motor 21 starts, when the sensor relay is disconnected, the motor 21 stops.

[0050] The water outlet pipe 7 is provided with a solenoid valve 9, which 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 end of the second relay and the common end of the first relay of the communication module. When the first relay is energized or the second relay is energized and attracted, the solenoid valve 9 will start.

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

[0052] 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 battery 10 in this embodiment is a 4500mAh lead-acid battery, which can ensure long-term use. The solar panel 12 is fixedly arranged on the outside of the portable case 1, and the solar battery 10 and the solar controller 11 are both arranged inside the portable case 1. The solar controller 11 is connected to the solar panel 12 and the solar battery 10 respectively. The solar panel 12 uses solar energy to power the solar battery 10, which ensures sufficient supply of electric energy and achieves the purpose of long-term outdoor work of the present invention.

[0053] In this embodiment, the positive pole of the load end of the solar controller 11 is connected to the positive power supply pole of the communication module to ensure the normal and stable operation of the communication module throughout the year; the positive pole of the load end of the solar controller 11 is also connected to the normally open end of the first relay of the communication module, the common end of the first relay of the communication module is connected to the positive pole of the motor 21, and the negative pole of the motor 21 is connected to the negative pole of the solar load end, ensuring that the motor 21 is powered when the first relay of the communication module is powered by the remote control end, thereby realizing remote start and stop of the motor 21 for irrigation.

[0054] The working principle of the present invention is:

[0055] The present invention is suitable for terrain with height differences. The present invention is placed at a lower terrain location, and an inlet pipe is connected to the inlet pipe 6, and the inlet pipe is extended into a water source or irrigation canal at a higher terrain location. The outlet pipe is connected to the outlet pipe 7 and placed in the area to be irrigated.

[0056] The remote control terminal transmits a control signal to the communication module through the 4G network to start the motor 21. Two control switches are provided on the remote control terminal, corresponding to the two control modes of starting the motor 21:

[0057] 1. Manual control mode. The manual control mode includes an immediate start mode and a timing control mode. The process of the immediate start mode is: the remote control terminal sends a signal to start the motor 21, and transmits the signal to the communication module through the 4G network. After the communication module receives the signal, it controls the first relay to be attracted, thereby starting the motor 21; the process of the timing control mode is: the time for timing to start the motor 21 is set on the remote control terminal. After the preset time is reached, the remote control terminal sends a signal to the communication module. After the communication module receives the signal, it controls the first relay to be attracted, thereby starting the motor 21 and the solenoid valve 9, and starting the irrigation work.

[0058] When it is necessary to stop irrigation, a motor 21 shutdown signal is sent through the remote control terminal, the first relay is powered off, and the motor 21 and the solenoid valve 9 both stop working.

[0059] 3 Automatic control mode. The automatic control mode is started through the remote control terminal. After the communication module obtains the signal, the second relay is controlled to be energized and closed, the sensor module is energized, and the solenoid valve 9 is opened. The probe of the humidity sensor will detect the soil moisture and transmit it to the LM393 comparator in the humidity sensor. When the soil moisture is detected to be lower than the set value, the humidity sensor outputs a high level, the sensor relay is closed, and the motor 21 connected thereto is started; when the soil moisture is higher than the set value, the humidity sensor outputs a low level, the sensor relay is not closed, and the motor 21 does not run.

[0060] When the motor 21 starts to run, the operation of the motor 21 drives the crank slider mechanism to operate, pushing the cam 3 to do left and right reciprocating motion. When the cam 3 moves to the swing clamp 5, the follower swing clamp 5 is squeezed by the cam 3 and starts to swing, thereby squeezing the airbag 4, and the air in the airbag 4 is discharged through the exhaust valve 41; when the cam 3 moves away, the follower returns to normal, releasing the airbag 4, and an air pressure difference is formed inside and outside the airbag 4. The water flows into the pipeline due to the air pressure difference and flows through the pipeline to the lower area to be irrigated.

[0061] Since the present invention applies the siphon principle, when the motor 21 is started for the first time, the siphon effect occurs and irrigation begins continuously, and the subsequent operation state of the motor 21 no longer affects the siphon effect that has already occurred. Therefore, when the motor 21 and the solenoid valve 9 are stopped at the same time in the manual control mode, the siphon effect will cause the water in the pipeline to accumulate pressure, which is convenient for the mode requiring pressure irrigation, such as when the water outlet is provided with a sprinkler irrigation pipe, the present invention can provide pressurized water in time; in the automatic control mode, the motor 21 is turned on and off by the state of soil moisture, and the solenoid valve 9 is always in the open state, so when the irrigation is completed, the automatic control switch is turned off to avoid excessive irrigation.

[0062] In this embodiment, the irrigation data involved is calculated as follows:

[0063] 1. Siphon hydraulic calculation

[0064] 1 Calculation of siphon water flow capacity Q

[0065] Since the siphon pipe is short, the local head loss and velocity head cannot be ignored compared with the head loss along the way, and must be considered at the same time. Therefore, the hydraulic calculation of the siphon pipe is carried out according to the short pipe. The hydraulic calculation of the short pipe is divided into 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: Where: Q is the flow rate m 3 / s,μ c is the flow coefficient;

[0066] If it is a free outflow,

[0067] If it is flooded,

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

[0069] 2 Siphon maximum installation height h s calculate

[0070] Taking the lowest water level 0-0 when the siphon is running as the reference plane, the maximum vacuum height hv is 7.0m, and the energy equations of sections 1 and 2 are obtained:

[0071]

[0072] Then we have:

[0073]

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

[0075] 3 Calculation of minimum submergence depth S

[0076] In order to prevent the formation of a through-funnel vortex at the water inlet of the siphon pipe, which would bring in air and destroy the siphon effect, the minimum submerged depth S of the siphon pipe can be estimated by the following formula:

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

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

[0079] 2. Calculation of pipeline flow

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

[0081] The flow rate is proportional to the pipe cross-sectional area and flow velocity. The relationship between the three is:

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

[0083] Where Q is flow rate m 3 / h; D—pipe inner diameter m; V—fluid average velocity m / s.

[0084] 3. Calculation of the maximum speed of the slider in the crank slider mechanism

[0085] An offset crank slider mechanism Figure 6 As shown. In the figure, 1 is crank 20, 2 is connecting rod 22, and 3 is slider 23. It is known that the length of crank 20 is l1, the length of connecting rod 22 is l2, the eccentricity is e, and the constant angular velocity of crank 20 is ω1. Establish Figure 6 The rectangular coordinate system shown.

[0086] Assuming the rotation angle of crank 20 is φ1 and the rotation angle of connecting rod 22 is φ2, the closed vector equation of the mechanism is:

[0087]

[0088] Its complex exponential equation is

[0089]

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

[0091]

[0092]

[0093] Where: λ = l1 / l2, is the rod length ratio of the connecting rod 22 to the crank 20; γ = e / l1 is the ratio of the eccentricity to the length of the crank 20

[0094] The derivative of formula 1 with respect to time t is:

[0095]

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

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

[0098]

[0099]

[0100] from Figure 6It can be seen that the angle α between the crank and the connecting rod is related to the crank angle The relationship between them is:

[0101]

[0102] Formula 6 is a complex trigonometric function. Based on the above derived formula and known conditions, the equation calculation function of Excel software can be used to solve the slider v for different rod lengths and eccentricities. cmax The location of the

[0103] Table 1 υ at different rod lengths and offsets Cmax Location

[0104]

[0105] From Table 1 we can conclude that:

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

[0107] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural transformation made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A portable irrigation device, characterized in that: include: A portable box (1), wherein a pipe hole (8) is provided on the portable box (1); A transmission device, the transmission device is arranged in the portable box (1), the transmission device comprises 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 left and right reciprocating movement of the sliding cam (3) can control the clamping and loosening of the swing clamping member (5); An airbag (4), the airbag (4) being fixedly arranged inside the portable case (1), one end of the airbag (4) being connected to a water outlet pipe (7), and the other end of the airbag (4) being connected to a water inlet pipe (6), the water outlet pipe (7) and the water inlet pipe (6) respectively passing through corresponding pipe holes (8) on the portable case (1), the airbag (4) being in contact with the swing clamping member (5), and the clamping and loosening of the swing clamping member (5) being able to control the generation of negative pressure inside the airbag (4); A control device, the control device is connected to the crank-connecting rod mechanism and is used to control the start and stop of the crank-connecting rod mechanism; and a power module, wherein the power module is connected to the crank-connecting rod mechanism and the control device respectively.

2. A portable irrigation device according to claim 1, characterized in that: The air bag (4) comprises an air intake valve (40) and an air exhaust valve (41), wherein the air intake valve (40) and the air exhaust valve (41) are both one-way valves, the air intake valve (40) is connected to the water inlet pipe (6), and the air 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 comprises a motor (21), a crank (20), a first connecting rod (22), a second connecting rod (23) and a connecting rod slide seat (24); a transmission 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); 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) is inserted into the connecting rod slide seat (24) and can slide left and right along the connecting rod slide seat (24) driven by the first connecting rod (22); and 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) comprises a travel disc (20-1) and a hinge screw (20-2); the transmission shaft of the motor (21) is arranged along the central axis of the travel disc (20-1) and connected to the travel disc (20-1); a threaded connection hole (20-3) is provided on the travel disc (20-1) in the same direction as the central axis of the travel disc (20-1); there are a plurality of threaded connection holes (20-3), and the distances from the central axes of the threaded connection holes (20-3) to the central axis of the travel disc (20-1) are unequal.

5. A portable irrigation device according to claim 3, characterized in that: 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 threadedly matched and connected, and the length of the first connecting rod (22) can be adjusted through the threaded matching.

6. A portable irrigation device according to claim 4 or 5, characterized in that: The swing clamping member (5) comprises an upper clamping piece and a lower clamping piece which are hinged to 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 airbag (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.

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

8. A portable irrigation device according to claim 7, characterized in that: The water outlet pipe (7) is provided with a solenoid valve (9), 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 received external information or according to information transmitted by the sensor module.

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

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

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