A device and method for mixing fresh and salt water for irrigation

Abstract

The application discloses a kind of brackish water mixing irrigation device and method, belong to agricultural implement technical field, including pad, the upper surface of the pad is fixedly connected with mounting seat, the mounting seat is fixedly connected with connecting pump, the input and output of the connecting pump are connected with intermediate pipe and drain pipe respectively, in the present application, adopt swing lever, first floating plate, tooth, first gear and control valve, when fresh water level is higher and salt water level is lower, device can automatically reduce fresh water inflow, while increasing the mixing ratio of salt water, vice versa, this automatic adjustment mechanism ensures that under the condition of water source fluctuation, device can adjust the ratio of fresh water and salt water, maintain the suitable salinity concentration of irrigation water, without any power drive or manual intervention;Significant advantage lies in its automation and passive regulation characteristics, which not only improves the intelligence and efficiency of irrigation system, but also reduces operating cost and maintenance requirement.

Description

Technical Field

[0001] This invention belongs to the field of agricultural machinery technology, and in particular relates to a brackish water mixing irrigation device and method. Background Technology

[0002] Brackish water mixing irrigation is an effective water resource utilization method, especially suitable for areas with high groundwater mineralization and freshwater shortages. By mixing brackish and fresh water, the salinity of irrigation water can be reduced, making it more suitable for crop growth, while increasing the total amount of water available for irrigation and making full use of brackish water resources.

[0003] The shortcomings of existing technologies are that saline water resources are unevenly distributed in some areas, and due to the influence of geological and climatic conditions, there are significant differences in the water level and storage of saline and fresh water. Traditional saline-fresh water mixed irrigation methods have problems such as uneven mixing and difficulty in controlling the ratio, resulting in unsatisfactory irrigation effects and bringing greater disadvantages to saline-fresh water mixed irrigation.

[0004] Based on this, the present invention designs a brackish water mixing irrigation device and method to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a brackish water mixing irrigation device and method to solve the problems of uneven mixing and difficulty in controlling the ratio, which leads to unsatisfactory irrigation results.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A brackish water mixing irrigation device includes a base, a mounting seat fixedly connected to the upper surface of the base, a connecting pump fixedly connected to the mounting seat, an intermediate pipe and a drain pipe respectively connected to the inlet and outlet of the connecting pump, the other end of the intermediate pipe connected to a transfer box fixedly connected to the base, two supports fixedly connected to the base, a temporary storage box fixedly connected to the supports, an injection pipe connected to the side of the temporary storage box, a floating adjustment mechanism penetrating the temporary storage box, and a swing connecting mechanism slidably connected to the floating adjustment mechanism and mounted on the temporary storage box. The structure includes a sliding adjustment mechanism slidably connected within the swing connection mechanism. A sliding groove is provided on the side of the temporary storage box, and the sliding adjustment mechanism is slidably connected within the sliding groove. A connecting pipe is connected to the side of the temporary storage box near the transfer box, and an extension pipe is connected to the other end of the connecting pipe. An outlet head located below the sliding adjustment mechanism is connected to the end of the extension pipe. A control valve is provided outside the connecting pipe and is located within the sliding adjustment mechanism. A sliding contact mechanism is provided inside the transfer box, and a movable mixing mechanism connected to the transfer box is provided on the side of the sliding contact mechanism.

[0008] As a further description of the above technical solution:

[0009] The floating adjustment mechanism includes a first moving rod, which is slidably connected to two guide sleeves. The guide sleeves are connected through the temporary storage box. A first float plate is fixedly connected to the bottom end of the first moving rod. The first moving rod is slidably connected in the swing connection mechanism.

[0010] As a further description of the above technical solution:

[0011] The swing connection mechanism includes a swing rod with a first connecting hole on its outer side. A first moving rod is slidably connected in the first connecting hole. The swing rod also has a second connecting hole on its outer side, and a sliding adjustment mechanism is slidably connected in the second connecting hole. A pin is provided on the side of the swing rod, and a side plate is hinged to the pin. The side plate is fixedly connected to the temporary storage box.

[0012] As a further description of the above technical solution:

[0013] The sliding adjustment mechanism includes a second movable rod slidably connected in the second connecting hole, an intermediate rod fixedly connected in the second movable rod, a sliding block fixedly connected to one end of the intermediate rod near the temporary storage box, the sliding block slidably connected in the sliding groove, a control rod fixedly connected to the side of the intermediate rod, and the control rod fixedly connected to the water outlet head.

[0014] As a further description of the above technical solution:

[0015] The bottom end of the second moving rod is fixedly connected to a moving frame, the moving frame is provided with teeth, and a first gear is engaged with the teeth. The first gear is located outside the control valve, and the second moving rod is cylindrical.

[0016] As a further description of the above technical solution:

[0017] The sliding contact mechanism includes a linear bearing, which is slidably connected to a vertical rod. A circular plate is fixedly connected to the top end of the vertical rod, and a second floating plate is fixedly connected to the bottom end of the vertical rod. The linear bearing is fixedly connected to the outside of the movable mixing mechanism, and the circular plate is fixedly connected to the top end of the vertical rod.

[0018] As a further description of the above technical solution:

[0019] The movable mixing mechanism includes a crossbar fixedly connected to the outside of a linear bearing, a connecting sleeve slidably connected to the outside of the crossbar, the connecting sleeve being fixedly connected to a transfer box, a baffle fixedly connected to the end of the crossbar, and a toothed groove on the outside of the crossbar.

[0020] As a further description of the above technical solution:

[0021] A second gear meshes within the tooth groove, and a rotating shaft is connected through the second gear. A support bearing is fitted over the rotating shaft, which is located inside the transfer box. An agitator is fixedly connected to the outside of the rotating shaft, and the agitator is located below the second float.

[0022] As a further description of the above technical solution:

[0023] The crossbar is rectangular and located on the upper side of the transfer box, while the water outlet is located inside the transfer box.

[0024] A method for using a brackish water mixing irrigation device, the method comprising the following steps:

[0025] When brackish water irrigation is required, the water levels and storage volumes of brackish and fresh water differ, resulting in a difference in the water levels of brackish and fresh water in the two temporary storage tanks. When the water level in the temporary storage tank changes, the buoyancy of the first float will control the first float and the first moving rod to move vertically. When the water level in the temporary storage tank rises, the first float moves up and controls the swing rod to rotate through the first moving rod.

[0026] The swing arm uses the second connecting hole to squeeze the second moving rod, the moving frame and the teeth to move downward. As the teeth move downward, the opening degree of the first gear and the control valve is reduced. At this time, the amount of water discharged from the temporary storage tank through the connecting pipe, the extension pipe and the water outlet is reduced. When the liquid level in the temporary storage tank drops, the amount of water discharged from the water outlet increases. This allows the ratio of salt water to fresh water flowing out of the two temporary storage tanks to be passively adjusted so that the ratio is appropriate, without the need for intelligent or manual control.

[0027] When water is injected into the transfer tank through the outlet, the impact of the water flow makes the salt water and fresh water mix more thoroughly and evenly. The impact of the water flow also creates waves in the transfer tank. The buoyancy of the water in the transfer tank acts on the second float plate, and the waves impact the movement of the second float plate. The horizontal movement of the second float plate controls the movement of the crossbar and the toothed groove. The toothed groove controls the rotation of the second gear, the rotating shaft, and the agitator plate. The agitator plate stirs and mixes the salt water and fresh water in the transfer tank. The impact of the water flow from the outlet acts on the agitation action, which in turn ensures that the salt water and fresh water are fully mixed. The pump then draws water from the transfer tank and uses it for irrigation through the drain pipe.

[0028] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0029] 1. This invention employs a swing rod, a first float, teeth, a first gear, and a control valve. Through this innovative design, intelligent response to liquid level changes is achieved. The first float can adaptively move up and down according to changes in the liquid level within the storage tank, thus accurately sensing changes in the water level and storage capacity of both fresh and saline water sources. The device, through the displacement of the first float, links the rotation of the control valve, thereby adjusting its opening and closing degree to achieve precise control of the fresh and saline water flow rates. When the fresh water level is high and the saline water level is low, the device can automatically reduce the fresh water inflow while increasing the saline water mixing ratio, and vice versa. This automated adjustment mechanism ensures that the device can automatically adjust the ratio of fresh and saline water to maintain a suitable salinity concentration for irrigation water under fluctuating water source conditions, without any electrical drive or manual intervention. Its significant advantage lies in its automated and passive adjustment characteristics, which not only improve the intelligence and efficiency of the irrigation system but also reduce operating costs and maintenance requirements.

[0030] 2. In this invention, the designed water outlet head, second moving rod, and control rod mechanism achieve precise control of the water outlet height. The vertical movement of the control rod is synchronized with that of the first float, thereby guiding the water outlet head to change at multiple height levels, allowing the water flow to fall into the transfer box along different height trajectories. This design cleverly utilizes the impact force of saline and fresh water during the descent, which not only effectively promotes the thorough mixing of water flow in the transfer box, but also generates a large number of bubbles, further enhancing the mixing effect of the water. This physical mixing method ensures that saline and fresh water achieve a more uniform mixing state in the transfer box, improving the uniformity and applicability of irrigation water. Thanks to this innovative design, this device not only optimizes the efficiency of water resource utilization but also significantly improves the quality of irrigation water, providing a more efficient and reliable saline-fresh water mixing effect for agricultural production.

[0031] 3. In this invention, an innovative combination of a second float, a crossbar, a toothed groove, a second gear, and a stirring plate is introduced. The second float is designed to always float on the liquid surface of the transfer tank, enabling it to respond in real time to the water surface fluctuations caused by the water impact flowing down from the outlet head, thus allowing for flexible sliding in the horizontal direction. This dynamic response mechanism precisely controls the rotation of the second gear and the stirring plate through the toothed groove, allowing the stirring plate to effectively agitate the water in the transfer tank. The continuous rotation of the stirring plate promotes deep mixing of saline and fresh water, significantly improving the mixing effect and ensuring the uniformity and high quality of irrigation water. Thanks to this design, this device not only enhances the mixing uniformity of the water but also improves the overall performance of the irrigation system, achieving more ideal water resource management. Attached Figure Description

[0032] Figure 1This is a three-dimensional structural schematic diagram of a brackish water mixing irrigation device and method proposed in this invention;

[0033] Figure 2 This is a side-view three-dimensional structural diagram of a brackish water mixing irrigation device and method proposed in this invention;

[0034] Figure 3 This is a three-dimensional structural diagram of a temporary storage box for a brackish water mixing irrigation device and method proposed in this invention.

[0035] Figure 4 This is a three-dimensional cross-sectional view of the temporary storage box of the brackish water mixing irrigation device and method proposed in this invention.

[0036] Figure 5 This is a three-dimensional structural diagram of the water outlet of a brackish water mixing irrigation device and method proposed in this invention.

[0037] Figure 6 This is a three-dimensional structural diagram of the floating adjustment mechanism of a brackish water mixing irrigation device and method proposed in this invention.

[0038] Figure 7 This is a three-dimensional structural diagram of the sliding adjustment mechanism of a brackish water mixing irrigation device and method proposed in this invention.

[0039] Figure 8 This is a three-dimensional structural diagram of the transfer box for a brackish water mixing irrigation device and method proposed in this invention.

[0040] Figure 9 This is a three-dimensional cross-sectional structural diagram of the transfer box of the brackish water mixing irrigation device and method proposed in this invention.

[0041] Figure 10 This is a three-dimensional structural diagram of the sliding contact mechanism of a brackish water mixing irrigation device and method proposed in this invention.

[0042] Legend:

[0043] 1. Pad; 2. Mounting base; 3. Connecting pump; 4. Intermediate pipe; 5. Drain pipe; 6. Transfer box; 7. Support; 8. Temporary storage box; 9. Injection pipe; 10. Floating adjustment mechanism; 101. First moving rod; 102. First float plate; 103. Guide sleeve; 11. Swinging connection mechanism; 111. Swing rod; 112. First connecting hole; 113. Second connecting hole; 114. Pin; 115. Side plate; 12. Sliding adjustment mechanism; 121. Second moving rod; 122. Intermediate rod; 123. Sliding block; 12 4. Control lever; 125. Moving frame; 126. Tooth; 127. First gear; 13. Sliding groove; 14. Connecting pipe; 15. Extension pipe; 16. Water outlet; 17. Control valve; 18. Sliding contact mechanism; 181. Linear bearing; 182. Vertical rod; 183. Circular plate; 184. Second float plate; 19. Movable mixing mechanism; 191. Horizontal rod; 192. Connecting sleeve; 193. Baffle; 194. Tooth groove; 195. Second gear; 196. Rotating shaft; 197. Support bearing; 198. Stirring plate. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Please see the appendix Figure 1 - Appendix Figure 10This invention provides a technical solution: a brackish water mixing irrigation device, comprising a base 1, an mounting base 2 fixedly connected to the upper surface of the base 1, a connecting pump 3 fixedly connected to the mounting base 2, an intermediate pipe 4 and a drain pipe 5 respectively connected to the inlet and outlet of the connecting pump 3, the other end of the intermediate pipe 4 connected to a transfer box 6 fixedly connected to the base 1, two supports 7 fixedly connected to the base 1, a temporary storage box 8 fixedly connected to the supports 7, an injection pipe 9 connected to the side of the temporary storage box 8, a floating adjustment mechanism 10 penetratingly connected to the temporary storage box 8, and a swing connection mechanism 1 slidably connected to the floating adjustment mechanism 10 on the temporary storage box 8. 1. A sliding adjustment mechanism 12 is slidably connected inside the swing connection mechanism 11. A sliding groove 13 is provided on the side of the temporary storage box 8. The sliding adjustment mechanism 12 is slidably connected in the sliding groove 13. A connecting pipe 14 is connected to the side of the temporary storage box 8 near the transfer box 6. An extension pipe 15 is connected to the other end of the connecting pipe 14. A water outlet 16 located under the sliding adjustment mechanism 12 is connected to the end of the extension pipe 15. A control valve 17 is provided outside the connecting pipe 14. The control valve 17 is located inside the sliding adjustment mechanism 12. A sliding contact mechanism 18 is provided inside the transfer box 6. A movable mixing mechanism 19 connected to the transfer box 6 is provided on the side of the sliding contact mechanism 18.

[0046] Water in the temporary storage tank 8 can be injected into the transfer tank 6 through the control valve 17, connecting pipe 14 and extension pipe 15, so that salt water and fresh water can be mixed in the transfer tank 6. The connecting pump 3 will draw the mixed water in the transfer tank 6 for irrigation.

[0047] Specifically, such as Figure 4-6 As shown, the floating adjustment mechanism 10 includes a first moving rod 101, two guide sleeves 103 are slidably connected to the outside of the first moving rod 101, the guide sleeves 103 are connected through the temporary storage box 8, the bottom end of the first moving rod 101 is fixedly connected to a first float plate 102, and the first moving rod 101 is slidably connected in the swing connection mechanism 11.

[0048] The first float 102 can be adjusted in height by the change of liquid level in the temporary storage tank 8. The buoyancy of the water is used to control the vertical movement of the first float 102 and the first moving rod 101. The guide sleeve 103 guides and limits the moving rod, so that the first moving rod 101 squeezes the swing rod 111 when the moving rod is vertically stable.

[0049] Specifically, such as Figure 5-7As shown, the swing connection mechanism 11 includes a swing rod 111, a first connection hole 112 is provided on the outside of the swing rod 111, a first moving rod 101 is slidably connected in the first connection hole 112, a second connection hole 113 is provided on the outside of the swing rod 111, a sliding adjustment mechanism 12 is slidably connected in the second connection hole 113, a pin 114 is provided on the side of the swing rod 111, a side plate 115 is hinged to the outside of the pin 114, and the side plate 115 is fixedly connected to the temporary storage box 8.

[0050] The swing rod 111 is supported by a pin 114, and the pin 114 is close to the sliding adjustment mechanism 12, so that the second moving rod 121 can be controlled to move slightly when the first moving rod 101 moves significantly. The swing rod 111 can use the first moving rod 101 to adjust the height change of the second moving rod 121. The first connecting hole 112 and the second connecting hole 113 can maintain contact with the first connecting rod and the second connecting rod when the swing rod 111 rotates.

[0051] Specifically, such as Figure 6-7 As shown, the sliding adjustment mechanism 12 includes a second moving rod 121 slidably connected in the second connecting hole 113, an intermediate rod 122 fixedly connected in the second moving rod 121, a sliding block 123 fixedly connected at one end of the intermediate rod 122 near the temporary storage box 8, the sliding block 123 slidably connected in the sliding groove 13, and a control rod 124 fixedly connected to the side of the intermediate rod 122, the control rod 124 fixedly connected to the water outlet head 16.

[0052] The bottom end of the second moving rod 121 is fixedly connected to the moving frame 125. The moving frame 125 is provided with teeth 126, and the teeth 126 are meshed with the first gear 127. The first gear 127 is located outside the control valve 17. The second moving rod 121 is cylindrical.

[0053] The sliding groove 13 guides the vertical movement of the sliding block 123 and the moving frame 125, so that the moving frame 125 and the teeth 126 can stably contact the first gear 127. The movement of the second moving rod 121 and the moving frame 125 can control the rotation of the first gear 127 and the control valve 17 through the teeth 126, adjusting the opening and closing degree of the control valve 17. At the same time, the height change of the water outlet head 16 can be adjusted by using the control rod 124.

[0054] Specifically, such as Figure 8-10 As shown, the sliding contact mechanism 18 includes a linear bearing 181, which is slidably connected to a vertical rod 182. A circular plate 183 is fixedly connected to the top end of the vertical rod 182, and a second floating plate 184 is fixedly connected to the bottom end of the vertical rod 182. The linear bearing 181 is fixedly connected to the outside of the movable mixing mechanism 19, and the circular plate 183 is fixedly connected to the top end of the vertical rod 182.

[0055] A linear bearing 181 is used to guide the vertical movement of the vertical rod 182 and the second float 184, making the height change process of the second float 184 according to the fluctuation of the liquid level in the transfer box 6 more stable. The second float 184 changes with the liquid level and can be moved horizontally by the wave of the liquid level.

[0056] Specifically, such as Figure 10 As shown, the movable mixing mechanism 19 includes a crossbar 191 fixedly connected to the outside of the linear bearing 181, a connecting sleeve 192 slidably connected to the outside of the crossbar 191, the connecting sleeve 192 fixedly connected to the transfer box 6, a baffle 193 fixedly connected to the end of the crossbar 191, and a toothed groove 194 opened on the outside of the crossbar 191.

[0057] A second gear 195 is meshed in the tooth groove 194. A rotating shaft 196 is connected through the second gear 195. A support bearing 197 is sleeved on the rotating shaft 196. The support bearing 197 is located in the transfer box 6. An agitator 198 is fixedly connected to the outside of the rotating shaft 196. The agitator 198 is located on the lower side of the second float 184.

[0058] The crossbar 191 is rectangular and located on the upper side of the transfer box 6. The water outlet 16 is located inside the transfer box 6.

[0059] A connecting sleeve 192 is used to restrict the rectangular crossbar 191 to prevent it from rotating. The horizontal movement of the second float 184 can control the sliding of the crossbar 191. When water is injected into the transfer tank 6 through the outlet 16, the impact of the water flow makes the mixing of salt water and fresh water more thorough and uniform. The impact of the water flow also causes the water in the transfer tank 6 to form waves. The buoyancy of the water in the transfer tank 6 acts on the second float 184. The waves impact the movement of the second float 184. The horizontal movement of the second float 184 controls the movement of the crossbar 191 and the toothed groove 194. The toothed groove 194 controls the rotation of the second gear 195, the rotating shaft 196 and the stirring plate 198. The stirring plate 198 stirs and mixes the salt water and fresh water in the transfer tank 6.

[0060] A method for using a brackish water mixing irrigation device, the method comprising the following steps:

[0061] When brackish water irrigation is required, the water levels and storage volumes of brackish and fresh water are different, resulting in a difference in the water levels of brackish and fresh water in the two temporary storage tanks 8. When the water level in the temporary storage tank 8 changes, the buoyancy of the first float 102 will control the first float 102 and the first moving rod 101 to move vertically. When the water level in the temporary storage tank 8 rises, the first float 102 moves upward and controls the swing rod 111 to rotate through the first moving rod 101.

[0062] The swing rod 111 uses the second connecting hole 113 to press the second moving rod 121, the moving frame 125 and the tooth 126 to move downward. As the tooth 126 moves downward, it controls the opening degree of the first gear 127 and the control valve 17 to decrease. At this time, the amount of water discharged from the temporary storage tank 8 through the connecting pipe 14, the extension pipe 15 and the water outlet 16 decreases. When the liquid level in the temporary storage tank 8 drops, the amount of water discharged from the water outlet 16 increases. This allows the ratio of salt water to fresh water flowing out of the two temporary storage tanks 8 to be passively adjusted so that the ratio is appropriate, without the need for intelligent or manual control.

[0063] When water is injected into the transfer tank 6 through the outlet 16, the impact of the water flow makes the salt water and fresh water mix more thoroughly and evenly. The impact of the water flow also causes the water in the transfer tank 6 to form waves. The buoyancy of the water in the transfer tank 6 acts on the second float 184. The waves impact the movement of the second float 184. The horizontal movement of the second float 184 controls the movement of the crossbar 191 and the toothed groove 194. The toothed groove 194 controls the rotation of the second gear 195, the rotating shaft 196 and the stirring plate 198. The stirring plate 198 agitates and mixes the salt water and fresh water in the transfer tank 6. The impact of the water flow from the outlet 16 acts on the agitation action, which in turn makes the salt water and fresh water mix thoroughly. The pump 3 draws water from the transfer tank 6 and uses it for irrigation through the drain pipe 5.

[0064] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for mixing fresh and salt water for irrigation, comprising a base (1), characterized in that, The mounting seat (2) is fixedly connected to the upper surface of the pad seat (1), a connecting pump (3) is fixedly connected to the mounting seat (2), an intermediate pipe (4) and a drain pipe (5) are respectively connected to the input port and the output port of the connecting pump (3), a transfer box (6) fixedly connected to the pad seat (1) is communicated with the other end of the intermediate pipe (4), two supports (7) are fixedly connected to the pad seat (1), a temporary storage box (8) is fixedly connected to the supports (7), an injection pipe (9) is communicated with the side surface of the temporary storage box (8), a floating adjustment mechanism (10) is penetratingly connected to the temporary storage box (8), a swing connection mechanism (11) provided on the temporary storage box (8) is slidingly connected to the outside of the floating adjustment mechanism (10), a sliding adjustment mechanism (12) is slidingly connected to the inside of the swing connection mechanism (11), a sliding groove (13) is formed in the side surface of the temporary storage box (8), the sliding adjustment mechanism (12) is slidingly connected in the sliding groove (13), a connecting pipe (14) is communicated with the side of the temporary storage box (8) close to the transfer box (6), an extension pipe (15) is communicated with the other end of the connecting pipe (14), a water outlet head (16) provided below the sliding adjustment mechanism (12) is communicated with the end of the extension pipe (15), a control valve (17) is provided outside the connecting pipe (14) and in the sliding adjustment mechanism (12), a sliding contact mechanism (18) is provided in the transfer box (6), and a movable mixing mechanism (19) connected to the transfer box (6) is provided on the side surface of the sliding contact mechanism (18). The floating adjustment mechanism (10) comprises a first moving rod (101), two guide sleeves (103) are slidingly connected to the outside of the first moving rod (101), the guide sleeves (103) are penetratingly connected to the temporary storage box (8), a first floating plate (102) is fixedly connected to the bottom end of the first moving rod (101), and the first moving rod (101) is slidingly connected in the swing connection mechanism (11). The swing connection mechanism (11) comprises a swing rod (111), a first connecting hole (112) is formed in the outside of the swing rod (111), the first moving rod (101) is slidingly connected in the first connecting hole (112), a second connecting hole (113) is formed in the outside of the swing rod (111), the sliding adjustment mechanism (12) is slidingly connected in the second connecting hole (113), a pin shaft (114) is provided on the side surface of the swing rod (111), a side plate (115) is hingedly connected to the outside of the pin shaft (114), and the side plate (115) is fixedly connected to the temporary storage box (8). The sliding adjustment mechanism (12) comprises a second moving rod (121) slidably connected in the second connecting hole (113), an intermediate rod (122) fixedly connected in the second moving rod (121), a sliding block (123) fixedly connected at one end of the intermediate rod (122) close to the temporary storage box (8), the sliding block (123) being slidably connected in the sliding groove (13), and a control rod (124) fixedly connected on the water outlet head (16) and fixedly connected on the side surface of the intermediate rod (122). The bottom end of the second moving rod (121) is fixedly connected with a moving frame (125), the moving frame (125) is provided with a gear (126), the gear (126) is externally meshed with a first gear (127), the first gear (127) is arranged outside the control valve (17), and the second moving rod (121) is in a cylindrical shape.

2. A device for mixing fresh and salt water for irrigation according to claim 1, characterized in that The sliding contact mechanism (18) comprises a linear bearing (181), a vertical rod (182) slidably connected in the linear bearing (181), a circular plate (183) fixedly connected at the top end of the vertical rod (182), and a second floating plate (184) fixedly connected at the bottom end of the vertical rod (182), the linear bearing (181) being fixedly connected outside the movable mixing mechanism (19).

3. A device for mixing fresh and salt water for irrigation according to claim 2, characterized in that The movable mixing mechanism (19) comprises a horizontal rod (191) fixedly connected outside the linear bearing (181), a connecting sleeve (192) slidably connected outside the horizontal rod (191), the connecting sleeve (192) being fixedly connected on the transfer box (6), end portions of the horizontal rod (191) being fixedly connected with baffle plates (193), and tooth grooves (194) being formed outside the horizontal rod (191).

4. A device for mixing fresh and salt water for irrigation according to claim 3, characterized in that The tooth grooves (194) are externally meshed with second gears (195), a rotating shaft (196) penetrates through the second gears (195), a support bearing (197) is arranged outside the rotating shaft (196), the support bearing (197) is arranged in the transfer box (6), and agitating plates (198) are fixedly connected outside the rotating shaft (196), the agitating plates (198) being located at the lower side of the second floating plate (184).

5. A device for mixing fresh and salt water for irrigation according to claim 4, characterized in that The horizontal rod (191) is in a rectangular shape, the horizontal rod (191) is located at the upper side of the transfer box (6), and the water outlet head (16) is located in the transfer box (6).

6. A method of using a device for mixing fresh and salt water for irrigation, according to claim 5, characterized in that, The method comprises the following steps: When saltwater and freshwater irrigation is needed, due to the difference in water level and storage capacity of saltwater and freshwater, the water level of saltwater and freshwater in the two temporary storage boxes (8) is different, and when the liquid level in the temporary storage box (8) changes, the buoyancy of the first floating plate (102) controls the vertical movement of the first floating plate (102) and the first moving rod (101), and when the liquid level in the temporary storage box (8) rises, the first floating plate (102) moves upward to control the rotating lever (111) to rotate through the first moving rod (101). Swing rod (111) by the second connecting hole (113) extrusion second moving rod, moving frame (125) and gear (126) to move down, gear (126) down while the control of the first gear (127) and control valve (17) open degree to reduce, at this time the water in the temporary storage tank (8) through the connecting pipe (14), extension pipe (15) and water outlet head (16) of water discharge water quantity reduces, in the temporary storage tank (8) liquid level drops, at this time the water outlet head (16) of water discharge water quantity increases, makes two temporary storage tank (8) in the outflow of salt water and fresh water ratio can be adjusted passively, make the two proportion is appropriate, and need not intelligent and manual control; When the water is injected into the transfer tank (6) through the water outlet head (16), the impact of water flow makes the mixing of salt water and fresh water more sufficient and uniform, and the water flow impact makes the water in the transfer tank (6) form waves, the buoyancy of the water in the transfer tank (6) acts on the second floating plate (184), the waves impact the second floating plate (184) to move, the horizontal movement of the second floating plate (184) controls the movement of the cross rod (191) and the gear slot (194), the gear slot (194) controls the rotation of the second gear (195), the rotating shaft (196) and the stirring plate (198), the stirring plate (198) stirs and mixes the salt water and fresh water in the transfer tank (6), the water flow flowing down from the water outlet head (16) impacts the stirring effect, which makes the salt water and fresh water mix fully, and the pump (3) sucks the water in the transfer tank (6) to irrigate through the drain pipe (5).

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