Drip irrigation device for desert crops

Abstract

The invention belongs to the technical field of drip irrigation of desert crops, and particularly discloses a drip irrigation device for desert crops, the drip irrigation device comprises a shell assembly, a negative feedback adjusting mechanism and a pressure water supply mechanism, the negative feedback adjusting mechanism is arranged on the shell assembly, and the pressure water supply mechanism is arranged on the shell assembly and located in the middle of the pressure water supply mechanism. On the basis of original constant drip irrigation, the actual water supply amount is compensated and adjusted to a certain degree in a negative feedback adjustment mode, it can be guaranteed that crops stably absorb water, and waste of water resources can be avoided to the maximum extent. In order to reduce waste in the evaporation test process, evaporated water is collected through the dome-type ventilation collection top cover and guided into the container through the inner water collection tank and the outer water collection tank, so that waste of water resources can be reduced to a great extent, and the influence of backflow of condensed water on a measurement result can be avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of desert crop drip irrigation, and in particular relates to a drip irrigation device for desert crops. Background Art

[0002] Due to the shortage of water resources and high surface evaporation in desert environments, desert crops are often watered by drip irrigation. Compared with traditional flood irrigation, drip irrigation has significant water-saving advantages, but in essence, most drip irrigation still uses surface water supply; Without exception, surface water supply will be greatly affected by surface water evaporation. If the water supply rate remains unchanged, when the surface water evaporation rate becomes faster, the water absorbed by crops will decrease, which is not conducive to crop growth; when the surface water evaporation rate slows down, the crops cannot absorb too much water and will be wasted by evaporation.

[0003] The surface evaporation is not only related to the ambient temperature, but also greatly affected by the near-ground wind speed. Therefore, the measurement of a single environmental parameter cannot accurately feedback the water evaporation rate, and it is difficult to allocate the influence of multiple parameters on the actual evaporation rate. Therefore, how to feedback the actual water evaporation rate through simple measurement and control methods is an urgent problem that technicians in this field need to solve. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes a drip irrigation device for desert crops. The present invention does not consider the influence of a single environmental factor on the water evaporation rate and the influence weight of each factor, but takes a different approach to provide feedback through the influence of the actual evaporation on the liquid level. On the basis of the original constant drip irrigation, the actual water supply is compensated and adjusted to a certain extent through negative feedback regulation, which can not only ensure that the crops absorb water stably, but also avoid the waste of water resources to the greatest extent.

[0005] When measuring the actual evaporation amount, since the water will be evaporated, it is inevitable that water resources will be wasted due to the test, and this waste process is continuous; in order to reduce this waste, the present invention collects the evaporated water through a dome-type ventilation collection cover, and guides it into the container through the inner water collection tank and the outer water collection tank, which can not only greatly reduce the waste of water resources, but also avoid the influence of the condensed water backflow on the measurement results.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes a drip irrigation device for desert crops, including a shell assembly, a negative feedback regulation mechanism and a pressure water supply mechanism, wherein the negative feedback regulation mechanism is arranged on the shell assembly, the pressure water supply mechanism is arranged on the shell assembly, and the negative feedback regulation mechanism is located in the middle part of the pressure water supply mechanism; the shell assembly includes a fixed rod, a water storage tank and a ventilation collection top cover, the water storage tank is arranged on the fixed rod, and the ventilation collection top cover is arranged on the water storage tank.

[0007] The semi-enclosed structure of the shell component can not only simulate the evaporation of water in the external environment by comprehensively feedback factors such as temperature and airflow, so as to serve as the basis for controlling the opening of drip irrigation; it can also greatly reduce the waste of water used for measurement by collecting condensed water.

[0008] Furthermore, a hollow portion is provided in the middle of the water storage tank, the fixing rod is fixed in the hollow portion, and an annular inner water collection trough and an outer water collection trough are respectively provided on the ventilation and collecting top cover, and both the inner water collection trough and the outer water collection trough are connected to an external container through a hose. The ventilation and collecting top cover is also provided with a ring-shaped through ventilation windows, and the external airflow can pass through the ventilation windows, so that the evaporation of water in the water storage tank corresponds to the evaporation of water in the outside world.

[0009] The position of the device can be fixed by inserting a fixing rod into the soil, and a scale can be set on the fixing rod so that the depth of the fixing rod inserted into the soil can be fed back according to the scale reading, thereby controlling the height of the ventilation collection cover; the evaporated condensed water can be collected through the inner and outer water collection tanks, greatly reducing the waste of water.

[0010] Furthermore, the negative feedback regulating mechanism comprises a supporting assembly, a regulating valve assembly and a floating ball, wherein the supporting assembly is arranged on the water tank, the regulating valve assembly is rotatably arranged on the supporting assembly, and the floating ball is arranged on the regulating valve assembly.

[0011] The negative feedback regulation mechanism feeds back the change of natural evaporation through the change of liquid level height, thereby adjusting the drip irrigation speed by changing the valve opening, so that the target crop can absorb a relatively stable amount of water.

[0012] Preferably, the support assembly comprises a valve body bracket and a sleeve joint, the valve body bracket is arranged on the water tank, and the sleeve joint is arranged on the valve body bracket.

[0013] As a further preference of the present invention, the regulating valve assembly includes a fixed valve flap, a rotating valve flap and a rotating valve body. The fixed valve flap is arranged in the drip irrigation water supply assembly. A first through groove is provided on the fixed valve flap. The rotating valve flap is adjustably arranged in the rotating valve body. A second through groove corresponding to the first through groove is provided on the rotating valve flap. The fixed valve flap and the rotating valve flap are in end face contact and arranged coaxially.

[0014] By rotating the rotating valve flap, the size of the overlapping area between the first through groove and the second through groove can be changed, so as to realize the automatic adjustment of the drip irrigation speed.

[0015] Preferably, the float ball is fixedly connected to the rotating valve body. The float ball can sense the liquid level height in the water storage tank and drive the rotating valve body to rotate, so as to realize the adjustment of the valve opening.

[0016] The valve opening is related to the water supply volume. Each value of the external evaporation volume corresponds to a balanced valve opening. When the liquid level height changes to this valve opening, the whole system will enter a balanced state.

[0017] The whole system maintains the valve opening through the balance of the gravity and buoyancy of the float ball, and feedbacks the change trend of the evaporation volume through the direction of the change of the liquid level height.

[0018] As a further preference of the present invention, a fork arm is provided on the valve body support. A sleeve support is provided at the end of the fork arm. The sleeve joint is fixedly connected in the sleeve support. An installation sleeve is also provided on the valve body support. The valve body support is sleeved on the hollow part through the installation sleeve.

[0019] Furthermore, the pressure water supply mechanism includes a drip irrigation water supply assembly and a water replenishment adjustment assembly. The intermediate joint of the drip irrigation water supply assembly is located in the water storage tank and is connected to the negative feedback adjustment mechanism. The water replenishment adjustment assembly is arranged on the drip irrigation water supply assembly.

[0020] Preferably, the drip irrigation water supply assembly includes a water inlet pipe and a drip irrigation pipe. Both the water inlet pipe and the drip irrigation pipe pass through the outer shell of the water storage tank. One end of the water inlet pipe is fixedly connected in the sleeve support. The rotating valve body rotates on the water inlet pipe. The fixed valve flap is fixedly connected in the water inlet pipe.

[0021] As a further preference of the present invention, a first joint is provided on the drip irrigation pipe. The water replenishment adjustment assembly includes a conical valve seat and an internal drip head. The conical valve seat is fixedly connected in the first joint. Through holes are annularly and uniformly arranged on the conical valve seat. The internal drip head is threadedly connected to the first joint. A handle part is provided on the internal drip head. A conical hollow part matching the conical valve seat is provided at the central position of the internal drip head.

[0022] Preferably, the drip irrigation pipe is further provided with a second joint in an array, and the drip irrigation water supply assembly further comprises an external dripper, which is fixedly connected to the second joint.

[0023] The beneficial effects achieved by the present invention using the above structure are as follows: (1) The semi-enclosed structure of the housing assembly can simulate the evaporation of water in the external environment by comprehensively feedback factors such as temperature and airflow, which can serve as the basis for controlling the opening of drip irrigation. It can also greatly reduce the waste of water used for measurement by collecting condensed water.

[0024] (2) The position of the device can be fixed by inserting a fixing rod into the soil. By setting a scale on the fixing rod, the depth of the fixing rod inserted into the soil can be fed back according to the scale reading, thereby controlling the height of the ventilation collection cover; the evaporated condensed water can be collected through the inner and outer water collection tanks, greatly reducing the waste of water.

[0025] (3) The negative feedback regulation mechanism uses the change in liquid level to feedback the change in natural evaporation, thereby adjusting the drip irrigation speed by changing the valve opening, so that the target crop can absorb a relatively stable amount of water.

[0026] (4) By rotating the rotary valve disc, the size of the overlapping area between the first through groove and the second through groove can be changed, thereby realizing automatic adjustment of the drip irrigation speed.

[0027] (5) The valve opening is related to the water supply. Each external evaporation value corresponds to a valve opening that is balanced with it. When the liquid level changes to this valve opening, the entire system will enter a balanced state.

[0028] (6) The entire system maintains the valve opening by balancing the gravity and buoyancy of the float, and provides feedback on the changing trend of evaporation through the direction of the change in liquid level height. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A three-dimensional diagram of a drip irrigation device for desert crops proposed by the present invention; Figure 2 This is a front view of a drip irrigation device for desert crops proposed by the present invention; Figure 3 This is a left view of a drip irrigation device for desert crops proposed by the present invention; Figure 4 A top view of a drip irrigation device for desert crops proposed by the present invention; Figure 5 for Figure 2 A cross-sectional view along the cutting line AA; Figure 6 is Figure 2 a sectional view along the cutting line B-B in Figure 7 is Figure 2 a sectional view along the cutting line C-C in Figure 8 an exploded structural schematic diagram of a drip irrigation device for desert crops proposed by the present invention; Fig. 9 is Figure 7 a partial enlarged view at position I in Fig.10 is Figure 8 a partial enlarged view at position II in Fig.11 is Figure 5 a partial enlarged view at position III in

[0030] Among them, 1. housing assembly, 2. negative feedback adjustment mechanism, 3. pressure water supply mechanism, 4. fixing rod, 5. water storage tank, 6. ventilation and collection top cover, 7. hollow part, 8. inner water collection tank, 9. outer water collection tank, 10. ventilation window, 11. support assembly, 12. regulating valve assembly, 13. floating ball, 14. valve body support, 15. sleeve joint, 16. fixed valve flap, 17. rotating valve flap, 18. rotating valve body, 19. fork arm, 20. sleeve support, 21. installation sleeve, 22. first through groove, 23. second through groove, 24. drip irrigation water supply assembly, 25. water replenishment adjustment assembly, 26. water inlet pipe, 27. drip irrigation pipe, 28. external drip head, 29. conical valve seat, 30. internal drip head, 31. first joint, 32. second joint, 33. water passing hole, 34. handle part, 35. conical hollow part.

[0031] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0034] As Figure 1 to Figure 11 shown, the present invention provides a drip irrigation device for desert crops, including a housing assembly 1, a negative feedback adjustment mechanism 2, and a pressure water supply mechanism 3. The negative feedback adjustment mechanism 2 is provided on the housing assembly 1, the pressure water supply mechanism 3 is provided on the housing assembly 1, and the negative feedback adjustment mechanism 2 is located in the middle of the pressure water supply mechanism 3; the housing assembly 1 includes a fixed rod 4, a water storage tank 5, and a ventilation and collection top cover 6. The water storage tank 5 is provided on the fixed rod 4, the ventilation and collection top cover 6 is provided on the water storage tank 5, and the top of the ventilation and collection top cover 6 is sleeved on the fixed rod 4.

[0035] The housing assembly 1 has a semi-closed structure, which can simulate the water evaporation in the external environment under the comprehensive feedback of factors such as temperature and air flow, as a basis for controlling the drip irrigation opening; and it can also greatly reduce the waste of water used for measurement through the condensate collection method.

[0036] A hollow part 7 is provided in the middle of the water storage tank 5, the fixed rod 4 is fixedly connected to the hollow part 7, an annular inner water collection tank 8 and an outer water collection tank 9 are respectively provided on the ventilation and collection top cover 6, both the inner water collection tank 8 and the outer water collection tank 9 are communicated with an external container through a hose, and through holes 10 are annularly and evenly distributed on the ventilation and collection top cover 6, and the external air flow can pass through the through holes 10, so that the water evaporation amount in the water storage tank 5 corresponds to the external water evaporation amount.

[0037] The position of the device can be fixed by inserting the fixed rod 4 into the soil. By setting scales on the fixed rod 4, the depth of the fixed rod inserted into the soil can be feedback according to the scale reading, so as to control the height of the ventilation and collection top cover 6; the evaporation condensate can be collected through the inner water collection tank 8 and the outer water collection tank 9, greatly reducing the waste of water.

[0038] The pressure water supply mechanism 3 includes a drip irrigation water supply component 24 and a water replenishment adjustment component 25. The middle joint of the drip irrigation water supply component 24 is located in the water storage tank 5 and is connected to the negative feedback adjustment mechanism 2, and the water replenishment adjustment component 25 is provided on the drip irrigation water supply component 24.

[0039] The drip irrigation water supply assembly 24 includes an inlet pipe 26 and a drip irrigation pipe 27. Both the inlet pipe 26 and the drip irrigation pipe 27 pass through the outer shell of the water storage tank 5. One end of the inlet pipe 26 is fixedly connected to the sleeve bracket 20. The rotating valve body 18 is rotatably arranged on the inlet pipe 26. The fixed valve flap 16 is fixedly connected to the inlet pipe 26.

[0040] A first joint 31 is provided on the drip irrigation pipe 27, and the water replenishment adjustment component 25 includes a conical valve seat 29 and a built-in dripper 30. The conical valve seat 29 is fixedly connected to the first joint 31, and the conical valve seat 29 is annularly evenly provided with through water holes 33. The built-in dripper 30 is threadedly connected to the first joint 31, and a handle portion 34 is provided on the built-in dripper 30. A conical hollow portion 35 matching the conical valve seat 29 is provided at the center of the built-in dripper 30.

[0041] The drip irrigation pipe 27 is also provided with a second joint 32 in an array, and the drip irrigation water supply assembly 24 further includes an external dripper 28 , which is fixedly connected to the second joint 32 .

[0042] The negative feedback regulating mechanism 2 comprises a supporting assembly 11 , a regulating valve assembly 12 and a floating ball 13 . The supporting assembly 11 is arranged on the water storage tank 5 , the regulating valve assembly 12 is rotatably arranged on the supporting assembly 11 , and the floating ball 13 is arranged on the regulating valve assembly 12 .

[0043] The negative feedback regulating mechanism 2 feeds back the change of natural evaporation through the change of liquid level height, thereby adjusting the drip irrigation speed by changing the valve opening, so that the target crop can absorb a relatively stable amount of water.

[0044] The support assembly 11 includes a valve body bracket 14 and a sleeve joint 15 . The valve body bracket 14 is arranged on the water storage tank 5 , and the sleeve joint 15 is arranged on the valve body bracket 14 .

[0045] The regulating valve assembly 12 includes a fixed valve flap 16, a rotating valve flap 17 and a rotating valve body 18. The fixed valve flap 16 is arranged in the drip irrigation water supply assembly 24. The fixed valve flap 16 is provided with a first through groove 22. The rotating valve flap 17 is adjustably arranged in the rotating valve body 18. The rotating valve flap 17 is provided with a second through groove 23 corresponding to the first through groove 22. The fixed valve flap 16 and the rotating valve flap 17 are in contact through the end faces and are coaxially arranged.

[0046] By rotating the rotary valve flap 17 , the size of the overlapping area between the first through groove 22 and the second through groove 23 can be changed, thereby realizing automatic adjustment of the drip irrigation speed.

[0047] The float 13 is fixedly connected to the rotating valve body 18 . The float 13 can sense the liquid level in the water tank 5 and drive the rotating valve body 18 to rotate, so as to adjust the valve opening.

[0048] The valve opening is related to the water supply. Each external evaporation value corresponds to a valve opening that is balanced with it. When the liquid level changes to this valve opening, the entire system will enter a balanced state.

[0049] The whole system maintains the valve opening by balancing the gravity and buoyancy of the float 13, and feeds back the changing trend of the evaporation amount by the direction of the change in the liquid level height.

[0050] The valve body bracket 14 is provided with a fork arm 19 , and a sleeve bracket 20 is provided at the end of the fork arm 19 . The sleeve joint 15 is fixed in the sleeve bracket 20 . The valve body bracket 14 is also provided with a mounting sleeve 21 , and the valve body bracket 14 is sleeved on the hollow portion 7 through the mounting sleeve 21 .

[0051] During specific use, the user first needs to vertically insert the fixing rod 4 into the soil to complete the fixation of the device. By setting scales on the fixing rod 4, the burial depth and the installation height of the water tank 5 can also be controlled.

[0052] During normal operation, if the external evaporation amount is stable, the internal liquid level height of the water tank 5 is also relatively stable. At this time, after the water in the water tank 5 evaporates, a small part will escape from the ventilation window 10 with the airflow, and most of the airflow will rise to the top of the ventilation collection cover 6 and form liquid water droplets. Since the ventilation collection cover 6 is an overall dome-shaped shape, the water droplets on the top will slide toward the lower edge position, and when passing through the ventilation window 10, they will be diverted by the guidance of the inner warped edge of the ventilation window 10 generated during stamping until they enter the outer water collection tank 9. The water droplets on the middle cylinder of the ventilation collection cover 6 will flow into the inner water collection tank 8, and the liquids in the inner water collection tank 8 and the outer water collection tank 9 are collected into separate containers through pipes.

[0053] Each external evaporation value corresponds to a matching valve opening. Under this opening, the drip irrigation amount minus the evaporation amount, and the water left for the plant to absorb can remain roughly stable; if the external evaporation changes and the current valve opening does not match it, the negative feedback regulation mechanism 2 will automatically perform negative feedback regulation: The liquid level height is negatively correlated with the valve opening. When the liquid level height is the highest, the valve opening is the smallest; when the liquid level height is the lowest, the valve opening is the largest.

[0054] If the current valve opening is greater than the valve opening corresponding to the current evaporation amount, the water replenishment speed of the water replenishment regulating component 25 toward the water storage tank 5 will be greater than the evaporation speed, so the liquid level in the water storage tank 5 will increase. When the liquid level in the water storage tank 5 increases, the float 13 is pushed up. At this time, the overlapping area of ​​the first through groove 22 and the second through groove 23 is reduced, and the valve opening is also reduced until it is reduced to an opening balanced with the external evaporation amount; If the current valve opening is smaller than the valve opening corresponding to the current evaporation amount, the water replenishment speed of the water replenishment regulating component 25 toward the water storage tank 5 will be smaller than the evaporation speed, so the liquid level in the water storage tank 5 will decrease. When the liquid level in the water storage tank 5 decreases, the float 13 will also decrease. At this time, the overlapping area of ​​the first through groove 22 and the second through groove 23 increases, and the valve opening also increases until it increases to an opening balanced with the external evaporation amount.

[0055] Therefore, when the external evaporation rate is stable, the device can always reach a state of equilibrium with it.

[0056] If the evaporation amount of external water changes, when the evaporation amount increases, the evaporation speed in the water storage tank 5 also speeds up, the liquid level height decreases, and the descent of the float 13 causes the rotating valve body 18 to rotate, thereby increasing the overlapping area of ​​the first through groove 22 and the second through groove 23 and increasing the valve opening until the valve opening matches the evaporation amount of water after the change in the outside world; When the evaporation amount decreases, the evaporation rate in the water tank 5 also decreases and the liquid level height increases. The rise of the float 13 causes the rotating valve body 18 to rotate, thereby reducing the overlapping area of ​​the first through groove 22 and the second through groove 23 and reducing the valve opening until the valve opening matches the water evaporation amount after the external changes.

[0057] Through the above-mentioned negative feedback regulation, the drip irrigation water supply speed can be increased when the external water evaporation increases, and the drip irrigation water supply speed can be reduced when the evaporation decreases, so as to maintain the relative stability of the water absorbed by the crops; the natural evaporation is related to many factors, so although this negative feedback regulation cannot maintain the absolute stability of the absorption amount, compared with the traditional fixed drip irrigation mode, it can provide crops with more stable water supply conditions and is conducive to the growth of desert crops.

[0058] By rotating the handle portion 34, the distance between the conical valve seat 29 and the built-in dripper 30 can be changed, thereby actively adjusting the water supply ratio of the drip irrigation pipe 27 toward the water tank 5; by rotating and adjusting the relative angles of the rotating valve disc 17 and the rotating valve body 18, the corresponding relationship between the height of the float 13 and the valve opening can also be actively adjusted. Through the above two active adjustment steps, the liquid level height in the water tank 5 and the basic balance state of the water supply toward the water tank 5 when the valve is at an intermediate opening can be calibrated.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0060] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A drip irrigation device for desert crops, characterized in that: It comprises a housing component (1), a negative feedback regulating mechanism (2) and a pressure water supply mechanism (3), wherein the negative feedback regulating mechanism (2) is arranged on the housing component (1), the pressure water supply mechanism (3) is arranged on the housing component (1), and the negative feedback regulating mechanism (2) is located in the middle part of the pressure water supply mechanism (3); The housing assembly (1) comprises a fixing rod (4), a water storage tank (5) and a ventilation and collection top cover (6); the water storage tank (5) is arranged on the fixing rod (4), and the ventilation and collection top cover (6) is arranged on the water storage tank (5); The negative feedback regulating mechanism (2) comprises a supporting assembly (11), a regulating valve assembly (12) and a floating ball (13); the supporting assembly (11) is arranged on the water storage tank (5); the regulating valve assembly (12) is rotatably arranged on the supporting assembly (11); and the floating ball (13) is arranged on the regulating valve assembly (12); The regulating valve assembly (12) comprises a fixed valve flap (16), a rotating valve flap (17) and a rotating valve body (18); the fixed valve flap (16) is provided with a first through slot (22); the rotating valve flap (17) is adjustably arranged in the rotating valve body (18); the rotating valve flap (17) is provided with a second through slot (23) corresponding to the first through slot (22); the fixed valve flap (16) and the rotating valve flap (17) are in contact with each other through end faces and are coaxially arranged.

2. A drip irrigation device for desert crops according to claim 1, characterized in that: A hollow portion (7) is provided in the middle of the water storage tank (5), the fixing rod (4) is fixedly connected to the hollow portion (7), and an annular inner water collection tank (8) and an outer water collection tank (9) are respectively provided on the ventilation and collection top cover (6), and the inner water collection tank (8) and the outer water collection tank (9) are both connected to an external container through a hose. The ventilation and collection top cover (6) is also provided with annular ventilation windows (10) uniformly distributed therethrough, and airflow from the outside can pass through the ventilation windows (10), so that the amount of water evaporation in the water storage tank (5) corresponds to the amount of water evaporation from the outside.

3. A drip irrigation device for desert crops according to claim 2, characterized in that: The pressure water supply mechanism (3) comprises a drip irrigation water supply component (24) and a water replenishment regulating component (25); the middle joint of the drip irrigation water supply component (24) is located in the water storage tank (5) and is connected to the negative feedback regulating mechanism (2); and the water replenishment regulating component (25) is arranged on the drip irrigation water supply component (24).

4. A drip irrigation device for desert crops according to claim 3, characterized in that: The support assembly (11) comprises a valve body support (14) and a sleeve joint (15); the valve body support (14) is arranged on the water storage tank (5); and the sleeve joint (15) is arranged on the valve body support (14).

5. A drip irrigation device for desert crops according to claim 4, characterized in that: The float (13) is fixedly connected to the rotating valve body (18), and the float (13) can sense the liquid level in the water tank (5) and drive the rotating valve body (18) to rotate, so as to adjust the valve opening.

6. A drip irrigation device for desert crops according to claim 5, characterized in that: The valve body support (14) is provided with a fork arm (19), the end of the fork arm (19) is provided with a sleeve support (20), the sleeve joint (15) is fixedly connected to the sleeve support (20), and the valve body support (14) is also provided with a mounting sleeve (21), and the valve body support (14) is sleeved on the hollow portion (7) via the mounting sleeve (21).

7. A drip irrigation device for desert crops according to claim 6, characterized in that: The drip irrigation water supply assembly (24) comprises a water inlet pipe (26) and a drip irrigation pipe (27), wherein the water inlet pipe (26) and the drip irrigation pipe (27) both pass through the outer shell of the water storage tank (5), one end of the water inlet pipe (26) is fixedly connected to the sleeve bracket (20), the rotating valve body (18) is rotatably arranged on the water inlet pipe (26), and the fixed valve flap (16) is fixedly connected to the water inlet pipe (26).

8. The drip irrigation device for desert crops according to claim 7, characterized in that: The drip irrigation pipe (27) is provided with a first joint (31), and the water replenishment adjustment assembly (25) comprises a conical valve seat (29) and a built-in dripper (30), the conical valve seat (29) is fixedly connected to the first joint (31), the conical valve seat (29) is provided with through water holes (33) evenly distributed in an annular shape, the built-in dripper (30) and the first joint (31) are threadedly connected, the built-in dripper (30) is provided with a handle portion (34), and the center position of the built-in dripper (30) is provided with a conical hollow portion (35) that cooperates with the conical valve seat (29).

9. A drip irrigation device for desert crops according to claim 8, characterized in that: The drip irrigation pipe (27) is also provided with a second joint (32) in an array, and the drip irrigation water supply assembly (24) further comprises an external dripper (28), wherein the external dripper (28) is fixedly connected to the second joint (32).

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