A water measuring trough suitable for field surface irrigation

Abstract

The present invention discloses a water measuring trough suitable for field ground irrigation, comprising an expansion weir, a diversion plate and a water level detector; the expansion weir is placed in a trench to be tested, comprising a water flow trough with an adjustable opening size arranged at the top and a flexible bottom surface arranged at the bottom, and the chamber formed between the two is filled with air or liquid to adjust the shape of the flexible bottom surface so that the flexible bottom surface is completely fitted with the ground soil layer; the diversion plate has a discharge port and is detachably mounted on the cross section of the water flow trough; the water level detector is arranged at the top of the expansion weir to monitor the water level of the water flow trough. The water measuring trough provided by the present invention can accurately measure the small flow entering the irrigation ditch.

Description

Technical Field

[0001] The invention belongs to the field of farmland irrigation detection equipment, and in particular relates to a water measuring trough suitable for field surface irrigation. Background Art

[0002] In recent years, agricultural water use has always accounted for more than 60% of the total water use in the country. Farmers have a weak awareness of water conservation, lack of water conservation technology, and low agricultural water utilization efficiency. As a necessary basis and effective guarantee for water conservation in irrigation areas, water measurement technology has become very important for its promotion and implementation.

[0003] The most widely used field irrigation methods in northern China are still furrow irrigation and furrow irrigation. At present, most of the research on water measurement technology is aimed at standard channels, which is difficult to apply to the ground conditions and flow range of the field, especially to measure the small flow entering the irrigation ditch, and it is impossible to accurately judge the relationship between the crop water demand and the actual irrigation water consumption. Therefore, a new water measurement device is needed to meet the above requirements. Based on the above considerations, this new portable water measuring tank suitable for measuring small flow of field surface irrigation is designed. Summary of the invention

[0004] In view of the fact that the standardized flowmeter in the prior art is not suitable for the changeable field irrigation environment, the present invention proposes a water measuring trough suitable for field surface irrigation. The water measuring trough is also suitable for the test environment of small flow and has the characteristic of being portable.

[0005] To achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0006] A water measuring trough suitable for field surface irrigation, comprising an expansion weir, a cut-off plate and a water level detector;

[0007] The expansion weir is placed in the trench to be tested, and includes a water flow channel with an adjustable opening size arranged at the top and a flexible bottom surface arranged at the bottom. The chamber formed between the two is filled with air or liquid to adjust the shape of the flexible bottom surface so that the flexible bottom surface is completely in contact with the ground soil layer.

[0008] The intercepting plate has a drain port and is detachably mounted on the cross section of the water flow channel;

[0009] The water level detector is arranged at the top of the expansion weir groove and is used to monitor the water level height of the water flow groove.

[0010] As a further improvement of the present invention, the water flow trough is formed by a bottom plate and inclined plates located on both sides, and the inclined plates are rotatably connected to the bottom plate; during testing, the inclined plates are perpendicular to the bottom plate.

[0011] As a further improvement of the present invention, it also includes a slot arranged on the bottom plate, and the intercepting plate is detachably mounted on the bottom plate through the slot.

[0012] As a further improvement of the present invention, the bottom plate is a retractable bottom plate, and the selected bottom edge size of the intercepting plate is consistent with the width of the bottom plate after adjustment.

[0013] As a further improvement of the present invention, it also includes an air filling hole or a water filling port arranged on the flexible bottom surface.

[0014] As a further improvement of the present invention, it also includes sealing strips arranged at each interface.

[0015] As a further improvement of the present invention, the flexible bottom surface is made of elastic rubber material.

[0016] As a further improvement of the present invention, the drain port is in the shape of an inverted triangle.

[0017] As a further improvement of the present invention, the water level detector adopts an ultrasonic water level sensor, and the water level detector also communicates with the mobile phone terminal via a Bluetooth signal.

[0018] Beneficial effects of the present invention:

[0019] The present invention provides a water trough suitable for measuring field ground irrigation, which is mainly used to measure small flows entering the irrigation ditch, so as to accurately judge the relationship between the crop water demand and the actual irrigation water consumption. The water trough can adjust the specifications of the triangular weir plate and the length of the telescopic bottom plate to measure the field flow corresponding to the needs of different crops in different regions, and has great flexibility and practicality. The water trough fills the water-filled bottom bag with water to ensure the fit with the irrigation ditch. After the work is completed, all the water in the water-filled bottom bag can be discharged, and the design of the rotating inclined plate makes the water trough convenient to disassemble and carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of two intercepting plates with different structures in the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the expansion weir;

[0022] Figure 3 It is a schematic diagram of the installation of the water measuring tank of the present invention;

[0023] Figure 4 It is a working schematic diagram of the water measuring tank of the present invention;

[0024] Among them: 1-interceptor plate, 100-discharge port, 2-expansion weir, 3-water flow channel, 4-bottom plate, 5-inclined plate, 6-card slot, 7-air filling hole or water filling port, 8-flexible bottom surface, 9-water level detector, 10-chamber. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] The application principle of the present invention is described in detail below in conjunction with the accompanying drawings.

[0027] like Figure 1-4 The water measuring trough shown is suitable for field surface irrigation, and mainly comprises three parts: an expansion weir 2, a intercepting plate 1 and a water level detector 9.

[0028] Among them, the expansion weir 2 is placed in the trench to be tested, including a water flow trough 3 with an adjustable opening size arranged at the top and a flexible bottom surface 8 arranged at the bottom. The expandable chamber 10 formed between the two adjusts the shape of the flexible bottom surface 8 by filling air or liquid so that the flexible bottom surface 8 is completely in contact with the ground soil layer.

[0029] The intercepting plate 1 has a drain port 100 and is detachably mounted on the cross section of the water flow channel 3 .

[0030] The water level detector 9 is arranged at the top of the expansion weir trough 2 to monitor the water level of the water flow trough 3 .

[0031] In a specific embodiment, the water flow channel 3 is formed by a bottom plate 4 and inclined plates 5 on both sides, and the inclined plates 5 are rotatably connected to the bottom plate 4. This structure facilitates the carrying of the water flow channel on the one hand, and facilitates the slanted plates 5 to be rotated and opened to a position perpendicular to the bottom plate 4 during testing on the other hand. It also includes a clamping slot 6 provided on the bottom plate 4, and the intercepting plate 1 is detachably mounted on the bottom plate 4 through the clamping slot 6.

[0032] Furthermore, the bottom plate 4 is a retractable bottom plate, and the width can be adjusted as needed, and the bottom edge size of the selected intercepting plate 1 is consistent with the adjusted width of the bottom plate 4. The width of the bottom plate 4 can be adjusted according to the size of the flow.

[0033] In addition, sealing strips are also provided at various interfaces, for example, the position of the connection frame between the flexible bottom surface 8 and the bottom plate 4, or the contact side strips between the intercepting plate 1 and the bottom edge 4 and the inclined plate 5.

[0034] The drain port 100 adopts a structure that gradually narrows from the upper opening to the lower opening, such as an inverted triangle shape, so as to be suitable for measuring small flows in the irrigation ditch.

[0035] During the test, the width of the bottom plate 4 can be adjusted according to the flow rate, and then the intercepting plate 1 can be installed. After the intercepting plate 1 is installed, the inclined plate 5 is rotated to a perpendicular angle with the bottom plate 4 and fits together with the vertical side of the intercepting plate 1 to ensure that the water can only flow out from the position of the discharge port 100. During the test, the intercepting plate 1 with a discharge port 100 with a suitable opening can also be selected according to the flow rate to be installed in the expansion weir 2. If the water flow is too large, the intercepting plate 1 can be selected not to be installed if necessary.

[0036] It also includes an air filling hole or a water filling port 7 arranged on the flexible bottom surface 8. The flexible bottom surface 8 is made of elastic rubber material, and its outer surface is a non-smooth surface with concave and convex marks to increase the friction between the soil layer and avoid displacement of the entire device caused by the flow of water during testing. During the test, the water measuring tank is first placed in the groove to be tested, and then gas or water is filled into the chamber through the air filling hole or the water filling port 7, preferably water, so that the flexible bottom surface 8 is stretched and spread out under the action of air pressure or water pressure to fit closely with the soil layer of the groove. And combined with the non-smooth characteristics of the surface of the flexible bottom surface 8, an effective sealing layer can be formed to prevent moisture from entering the field from the junction between the outside of the water bag and the soil.

[0037] In addition, the water level detector 9 described in the embodiment of the present invention adopts a non-contact ultrasonic water level sensor, which is a common commercially available model, such as EA200. The water level detector 9 also communicates with the mobile phone terminal via a Bluetooth signal, and the water level detector 9 can be started by the mobile phone terminal control signal and receive the collected data information. The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A water measuring trough suitable for field surface irrigation, characterized in that: It comprises an expansion weir (2), a cut-off plate (1) and a water level detector (9); The expansion weir (2) is placed in the trench to be tested, and comprises a water flow channel (3) with an adjustable opening size arranged at the top and a flexible bottom surface (8) arranged at the bottom, and the chamber (10) formed between the two is filled with air or liquid to adjust the shape of the flexible bottom surface (8) so that the flexible bottom surface (8) is completely in contact with the ground soil layer; The intercepting plate (1) has a discharge port (100) and is detachably mounted on the cross section of the water flow channel (3); The water level detector (9) is arranged at the top of the expansion weir groove (2) and is used to monitor the water level height of the water flow groove (3).

2. A water measuring trough suitable for field surface irrigation according to claim 1, characterized in that: The water flow channel (3) is formed by a bottom plate (4) and inclined plates (5) located on both sides, and the inclined plates (5) are rotatably connected to the bottom plate (4); during testing, the inclined plates (5) are perpendicular to the bottom plate (4).

3. A water measuring trough suitable for field surface irrigation according to claim 2, characterized in that: It also includes a card slot (6) arranged on the bottom plate (4), and the intercepting plate (1) is detachably mounted on the bottom plate (4) via the card slot (6).

4. A water measuring trough suitable for field surface irrigation according to claim 2 or 3, characterized in that: The bottom plate (4) is a retractable bottom plate (4), and the selected bottom edge size of the intercepting plate (1) is consistent with the width of the bottom plate (4) after adjustment.

5. A water measuring trough suitable for field surface irrigation according to claim 1, characterized in that: It also includes an air filling hole or a water filling port arranged on the flexible bottom surface (8).

6. A water measuring trough suitable for field surface irrigation according to claim 1, characterized in that: It also includes sealing strips arranged at each interface.

7. A water measuring trough suitable for field surface irrigation according to claim 1, characterized in that: The flexible bottom surface (8) is made of elastic rubber material.

8. A water measuring trough suitable for field surface irrigation according to claim 1, characterized in that: The drain port (100) is in the shape of an inverted triangle.

9. A water measuring trough suitable for field surface irrigation according to claim 1, characterized in that: The water level detector (9) adopts an ultrasonic water level sensor, and the water level detector (9) also communicates with the mobile phone terminal via a Bluetooth signal.

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