Engineering management system for water source discharge of reservoir in irrigation area

Abstract

The invention discloses an engineering management system for irrigation area reservoir water source discharge, and relates to the field of water conservancy management, the engineering management system comprises a sinking box body, a sliding plate and a floating plate, and a water pumping mechanism used for adjusting the irrigation area reservoir bottom layer water source discharge amount according to the height of the water level in an irrigation area reservoir is installed between the inner cavity of the sinking box body and the bottom of the floating plate; and a double-pipe mechanism used for fully mixing and discharging a surface layer water source and a bottom layer water source of a reservoir in an irrigation area is mounted on the rear end surface of the sinking box body. The water temperature of the surface water body is neutralized by using the bottom water body, and rich nutritive salt in the bottom water body is discharged out of the irrigation area together for irrigation, so that water body resources in a reservoir in the irrigation area are utilized to the greatest extent, water entering the irrigation area is ensured to the greatest extent, crops in the irrigation area are irrigated with the optimal water quality, and the irrigation efficiency is improved. The use amount of chemical fertilizer is greatly reduced.

Description

Technical Field

[0001] The invention relates to the field of water conservancy management, and in particular to an engineering management system for water source discharge from a reservoir in an irrigation area. Background Art

[0002] Irrigation reservoirs refer to reservoirs that provide water for agricultural irrigation. Such reservoirs play a vital role in agricultural production and water resource management. When the water in the irrigation reservoir is used to irrigate the downstream irrigation area, due to the large depth of the irrigation reservoir, the water in the irrigation reservoir will experience thermal stratification after reaching a certain water level, which will lead to differences in temperature and nutrients between the surface water and the bottom water in the irrigation reservoir. The higher the water level, the greater the difference. If only surface water is used for irrigation, the water temperature and lack of nutrients in the surface water will have a certain impact on the crops in the irrigation area, which will require the addition of more chemical fertilizers, greatly reducing the quality of crop cultivation. If only bottom water is used for irrigation, it is easy to cause eutrophication of the irrigation area. Therefore, when using the water source of the irrigation reservoir to irrigate the irrigation area, the water in the irrigation reservoir cannot be fully utilized. Summary of the invention

[0003] The purpose of the present invention is to provide an engineering management system for water discharge from irrigation reservoirs, which can effectively mix surface water and bottom water, and at the same time adjust the usage of the two according to the changes in water level to ensure that the water quality used for irrigation is always within the optimal range for irrigating crops, greatly reducing the use of chemical fertilizers, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an engineering management system for water source discharge from an irrigation area reservoir, comprising a caisson body, a slide plate and a floating plate, wherein the top of the slide plate is fixedly mounted on the bottom of the floating plate, and the lower end of the slide plate is slidably mounted on the left and right sides of the caisson body, and a pumping mechanism for adjusting the discharge amount of the bottom water source of the irrigation area reservoir according to the water level in the irrigation area reservoir is installed between the inner cavity of the caisson body and the bottom of the floating plate, and a double-tube mechanism for fully mixing and discharging the surface water source and the bottom water source of the irrigation area reservoir is installed on the rear end surface of the caisson body, and the pumping mechanism includes A cylindrical platform is installed at the bottom of the caisson body and the lower end surface of the floating plate, and strip holes are distributed on the outer end surface of the cylindrical platform. A water pipe is fixedly connected to the cylindrical platform, and a water outlet is connected to the rear side of the water pipe. A water pump is installed in the water outlet. A closed slide is slidably connected to the cylindrical platform, and an elastic member 1 is connected between the top of the inner cavity of the closed slide located at the bottom of the caisson body and the corresponding cylindrical platform, and a control component for adjusting the hole size in the strip holes at the bottom is installed between the closed slide located at the bottom of the caisson body and the closed slide located at the bottom of the floating plate.

[0005] Preferably, the control component includes a top plate fixedly installed on the upper end face of the closed slide cylinder located at the bottom of the caisson body, the left end face of the top plate is slidably connected to the side wall of the inner cavity of the caisson body, a wedge-shaped column is fixedly connected to the upper end face of the top plate, a lower pressure plate is slidably installed on the front and rear side walls of the inner cavity of the caisson body, an elastic member 2 is connected between the lower end face of the lower pressure plate and the top plate, a through hole is passed through the lower pressure plate, a sinking cavity is arranged on the top of the lower pressure plate, a supporting slide plate is slidably installed in the sinking cavity, a return spring is connected between the supporting slide plate and the horizontal side wall of the sinking cavity, and a trapezoidal fixing block corresponding to the position of the wedge column is fixedly installed on the end face of the support slide plate close to the center line direction of the caisson body.

[0006] Preferably, the control component also includes a column tube fixedly mounted on the closed slide tube at the bottom of the floating plate, a sliding rod member is slidably connected in the inner cavity of the column tube, a compression spring is connected between the top of the sliding rod member and the top wall of the inner cavity of the column tube, a connecting plate is fixedly mounted on the slide plate, a sliding column is fixedly connected to the bottom of the connecting plate, the sliding column slides through the upper end surface of the caisson body and enters the inner cavity of the caisson body, a spherical portion is provided at the bottom end of the sliding column, and an open groove is provided on the side of the sliding column close to the slide plate, and the sliding rod member is slidably connected in the open groove.

[0007] Preferably, the double-tube mechanism includes an outer tube fixedly mounted on the rear end face of the caisson body, an upper tube portion is provided at the upper end of the outer tube, an elastic bellows is connected between the upper tube portion and the water outlet portion located on the lower side of the floating plate, an open semi-elliptical inner tube is fixedly mounted in the inner cavity of the outer tube, and the water outlet portion located in the inner cavity of the caisson body passes through and enters the inner cavity of the open semi-elliptical inner tube.

[0008] Preferably, an extension portion is provided at the upper opening of the semi-elliptical inner tube of the opening, and the two extension portions are respectively inclined toward the middle direction of the opening of the semi-elliptical inner tube of the opening.

[0009] Preferably, a number of arc-shaped tubes with rectangular cross-sections are evenly distributed and installed on the arc-shaped side walls on both sides of the open semi-elliptical inner tube, and the concave arc surface of each arc-shaped tube faces the water outlet direction of the water outlet part.

[0010] Preferably, the upper end surface of the supporting slide plate is provided with a U-shaped groove, and the bottom arc surface of the spherical portion can abut against and enter the U-shaped groove.

[0011] Preferably, an inner concave annular groove is arranged on the outer end surface of the cylindrical platform, an annular filter is installed in the inner concave annular groove, and a layer of wire brush is arranged on the inner cavity side wall of the closed slide cylinder.

[0012] Preferably, slide grooves are respectively arranged on the left and right end faces of the caisson body, and the slide grooves are slidably embedded in the slide grooves.

[0013] In summary, the beneficial effects of the present invention are: The present invention extracts surface water and bottom water in the reservoir when draining and irrigating the irrigation area, uses the bottom water to neutralize the water temperature of the surface water, and discharges the nutrient salts rich in the bottom water to the irrigation area for irrigation. This can effectively avoid the nutrientization of the irrigation area caused by using a single bottom water for irrigation, and make the best use of the water resources in the irrigation area reservoir. At the same time, as the water level gradually decreases, the extraction of the bottom water can be gradually reduced, so that the water entering the irrigation area can be guaranteed to the maximum extent, and the crops in the irrigation area can be irrigated with the best water quality. Moreover, after the water level drops to a certain level, the water at the bottom of the irrigation area reservoir will be completely extracted to irrigate the downstream irrigation area without extracting the surface water, thereby maximizing the quality and yield of the crops, and greatly reducing the use of chemical fertilizers, so as to maximize the healthy growth of the crops. When the surface water and the bottom water are discharged together, the surface water can be diverted through the open semi-elliptical inner tube, and the bottom water is broken up through the arc tube, so that a part of the surface water falls from top to bottom and mixes into the broken up bottom water, and the remaining two parts are injected into the bottom water from the side through the arc tube for mixing, thereby further fully and quickly mixing the surface water and the bottom water, thereby ensuring the irrigation of the irrigation area, effectively avoiding the use of traditional mechanical mixing, and mixing can be performed when the water comes out and passes through the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of an engineering management system for water source discharge from an irrigation area reservoir according to the present invention; Figure 2 It is a structural schematic diagram of another perspective of the overall engineering management system for water source discharge from an irrigation area reservoir of the present invention; Figure 3 It is a schematic diagram showing the internal structure of a caisson in an engineering management system for water source discharge from an irrigation area reservoir according to the present invention; Figure 4 It is a schematic diagram of the structure of a cylindrical platform in an engineering management system for water source discharge from an irrigation area reservoir of the present invention; Figure 5 It is a schematic diagram of the structure of the lower pressure plate in an engineering management system for water source discharge from an irrigation area reservoir according to the present invention; Figure 6 It is a partial structural schematic diagram of another perspective of a pumping mechanism in an engineering management system for water source discharge from an irrigation area reservoir of the present invention; Figure 7 It is a schematic diagram of the local structure of the spherical part of an engineering management system for water source discharge from an irrigation area reservoir of the present invention; Figure 8 It is a partial structural schematic diagram of external pipe fittings in an engineering management system for water source discharge from an irrigation area reservoir of the present invention; Fig. 9 It is a partial structural schematic diagram of the external pipe fittings in an engineering management system for water source discharge from an irrigation area reservoir according to the present invention from another perspective; Fig.10 It is a partial structural schematic diagram of an open semi-elliptical inner pipe in an engineering management system for water source discharge from an irrigation area reservoir of the present invention; Fig.11It is a schematic diagram showing the water level drop in an engineering management system for water source discharge from an irrigation area reservoir according to the present invention; Fig.12 It is a structural schematic diagram of the present invention when it is specifically used in an engineering management system for water source discharge from an irrigation area reservoir.

[0016] The symbols in the accompanying drawings are described as follows: caisson body 10; support part 11; slide groove 12; slide plate 14; floating plate 15; connecting plate 16; lower slide column 17; spherical part 18; open groove 19; pumping mechanism 20; water pipe 21; water outlet part 22; cylindrical platform 23; concave annular groove 24; strip hole 25; annular filter 26; closed slide cylinder 27; top plate 28; wedge column 29; elastic member 1 30; elastic member 2 31; lower pressure plate 32; sinking cavity 33; through hole 34; supporting slide plate 35; U-shaped groove 36; trapezoidal fixing block 37; column 38; sliding rod member 39; double-tube mechanism 40; upper tube part 41; outer tube 42; drainage pipe 43; elastic bellows 44; open semi-elliptical inner tube 45; arc tube 46; extension part 47. DETAILED DESCRIPTION

[0017] The present invention will now be further described in detail in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic way, and therefore they only show the structures related to the present invention.

[0018] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0019] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0020] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0021] In the present invention, unless otherwise clearly defined and specified, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of at least two elements or the interaction relationship between at least two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Combine the following Figure 1-12 The present invention is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front, and back directions mentioned below are the same as Figure 1 The view direction is consistent in front, back, left, right, up and down directions. Figure 1 The directions shown are consistent with the front, back, left, right, up and down directions of the device of the present invention when viewed from the front.

[0023] See also Figure 1-12, an embodiment of the present invention is: an engineering management system for water source discharge from an irrigation reservoir, comprising a caisson 10, wherein the caisson 10 is fixedly installed at the bottom of the water outlet area of ​​the irrigation reservoir, close to the main gate position, and slide grooves 12 are respectively arranged on the left and right end faces of the caisson 10, each of which is slidably connected with a slide plate 14, and the top end faces of the two slide plates 14 are fixedly connected with a floating plate 15, and the floating plate 15 always floats on the water surface, and support parts 11 are respectively arranged at the left and right ends of the bottom end face of the caisson 10, and the bottom of the caisson 10 is propped up by the support parts 11, and at the same time, a cylindrical platform 23 is respectively installed on both sides of the bottom of the inner cavity of the caisson 10, and the two cylindrical platforms 23 respectively penetrate the bottom of the caisson 10 and are exposed to the outside, and are located in the space supported by the two support parts 11, and the tops of the two cylindrical platforms 23 are connected with a water pipe 2 1, the middle of the water pipe 21 is connected with a water outlet 22, a water pump is installed in the water outlet 22, the water outlet 22 passes through the rear end surface of the caisson body 10, the outer end surface of the cylindrical platform 23 is distributed with strip holes 25, a closed slide 27 is slidably connected to the cylindrical platform 23, an elastic member 30 is connected between the top of the inner cavity of the closed slide 27 located at the bottom of the caisson body 10 and the corresponding cylindrical platform 23, the closed slide 27 It can completely cover the strip hole 25 to prevent water from entering the inner cavity of the cylindrical platform 23, and two cylindrical platforms 23 and corresponding closed slides 27, water pipes 21, and water outlets 22 are also installed on the lower end surface of the floating plate 15, so that the water on the surface of the irrigation area reservoir enters the corresponding water pipe 21 through the cylindrical platform 23 installed at the lower end of the floating plate 15, and the water on the bottom layer enters the corresponding water pipe 21 through the cylindrical platform 23 installed at the bottom of the caisson body 10; Since the depth of irrigation reservoirs is generally large, the water in the irrigation reservoirs will have a thermal stratification after reaching a certain water level. The water temperature will be stratified with the depth, including: Surface layer: This is the uppermost layer of the reservoir, which is usually directly affected by sunlight and therefore has a higher water temperature. The temperature of the surface water can change with weather conditions and seasonal changes; Thermocline: Below the surface, there is a transition layer where the temperature drops sharply, called the thermocline. In this area, the water temperature drops rapidly with increasing depth. The existence of the thermocline forms a barrier, making it difficult for substances to be exchanged between the upper and lower layers; Bottom layer: Located below the thermocline, it is usually a layer of water that maintains a relatively stable low temperature throughout the year. The water temperature in this layer changes little; At the same time, nutrients (such as nitrogen and phosphorus) in the surface water of the irrigation area reservoir may be consumed due to biological activities, especially when algae reproduce in large numbers. On the contrary, in the bottom water, if the decomposition of organic matter occurs, more nutrients may be released, resulting in a higher nutrient concentration in the bottom water; Therefore, when the downstream irrigation area needs to be irrigated, if only surface water is used for discharge and irrigation, the yield and quality of crops in the downstream irrigation area will decrease due to the lack of nutrients, thus requiring additional use of chemical fertilizers. At the same time, the high temperature of the surface water will also affect the crops in the irrigation area. Both too high and too low water temperatures will have a certain impact on crops.

[0024] Therefore, in this embodiment, when the irrigation area is drained and irrigated, water is pumped from the surface and bottom layers of the irrigation reservoir at the same time, and the surface water and the bottom water are mixed and then discharged, so as to maximize the use of the water quality in the irrigation reservoir. Because the water level will change during irrigation and drainage, the change in water level will affect the thermal stratification phenomenon, which will also affect the temperature between the surface water and the bottom water and the corresponding nutrient substances. After the water level drops, the difference in water temperature and nutrients between the surface water body and the bottom water body will gradually decrease. Therefore, in order to maximize the quality of the mixed water between the surface water body and the bottom water body, the use of the bottom water body needs to be gradually reduced when the water level drops.

[0025] Therefore, when the irrigation reservoir is draining water to irrigate the downstream irrigation area, as the water level gradually decreases, the amount of bottom water required also gradually decreases. This can maximize the water entering the irrigation area and irrigate the crops in the irrigation area with the best water quality, thereby maximizing the quality and yield of the crops and reducing the use of chemical fertilizers.

[0026] Therefore, a control component for adjusting the hole size of the strip hole 25 at the bottom is installed between the closed slide 27 located at the bottom of the caisson body 10 and the closed slide 27 located at the bottom of the floating plate 15, so as to control the discharge of the bottom water in the irrigation reservoir, so that the discharge of the bottom water source of the irrigation reservoir can be adjusted according to the water level in the irrigation reservoir. When the water level gradually decreases, the amount of bottom water mixed into the irrigation water also gradually decreases. After the surface water and the bottom water enter the water pipe 21 together, they enter the double-tube mechanism 40 together, and the double-tube mechanism 40 is used to fully mix the surface water source and the bottom water source of the irrigation reservoir and discharge them into the downstream irrigation area.

[0027] It is worth mentioning that, in this embodiment, reference Figure 3 , Figure 5 , Figure 6 and Figure 7The control assembly includes a top plate 28 fixedly installed on the upper end face of the closed slide 27 located at the bottom of the caisson body 10, the left end face of the top plate 28 is slidably connected to the side wall of the inner cavity of the caisson body 10, and two wedge-shaped columns 29 are fixedly connected to the upper end face of the top plate 28, and the two wedge-shaped columns 29 are symmetrically distributed front to back, and a lower pressure plate 32 is slidably installed on the front and rear side walls of the inner cavity of the caisson body 10, and one is installed on each side of the slide plate 14, and an elastic member 31 is connected between the lower end face of each lower pressure plate 32 and the top plate 28, and a through hole 34 is passed through the lower pressure plate 32, and a sinking cavity 33 is arranged on the top of the lower pressure plate 32, and a supporting slide plate 35 is slidably installed in the sinking cavity 33, and the supporting slide plate 35 is slidably installed with the support slide plate 35 and the support slide plate 35. A return spring is connected between the transverse horizontal side walls of the sinking cavity 33, and a trapezoidal fixed block 37 corresponding to the position of the wedge column 29 is fixedly installed on the end face of the support slide plate 35 close to the center line direction of the caisson body 10. At the same time, a column tube 38 is fixedly connected to the closed slide tube 27 at the bottom of the floating plate 15, and a sliding rod 39 is slidably connected in the inner cavity of the column tube 38. A compression spring is connected between the top of the sliding rod 39 and the top wall of the inner cavity of the column tube 38. A connecting plate 16 is fixedly installed on the slide plate 14, and a sliding column 17 is fixedly connected to the bottom of the connecting plate 16. The sliding column 17 slides through the upper end surface of the caisson body 10 and enters the inner cavity of the caisson body 10. The bottom end of the sliding column 17 is provided with a spherical portion 18, refer to Figure 7 The lower slide post 17 is provided with an open slot 19 on one side close to the slide plate 14, and the slide bar 39 is slidably connected in the open slot 19; When the downstream irrigation area is drained and irrigated, the water level in the irrigation area reservoir drops, and the floating plate 15 floats on the water surface. Therefore, when the water level drops, the floating plate 15 will also move downward, so that the slide plates 14 on both sides slide downward, thereby driving the two downward slide columns 17 to slide downward together, and the spherical portion 18 abuts against the supporting slide plate 35, thereby pressing the lower pressure plate 32 to slide downward. At this time, the elastic member 2 31 is gradually compressed. When the force generated is greater than that of the elastic member 1 30, the top plate 28 is pushed to slide downward, thereby driving the closed slide cylinder 27 to slide downward, thereby blocking a part of the strip hole 25. The more the closed slide cylinder 27 slides downward, the more the strip hole 25 is blocked, and the less water enters the bottom layer of the irrigation area reservoir; When the water in the irrigation area reservoir drops to a certain level, at least half the water level, the trapezoidal fixed block 37 will abut against the inclined surface at the upper end of the wedge-shaped column 29, so that the support slide 35 slides away from the center line of the caisson body 10, so that the spherical portion 18 is disengaged from the support slide 35, and the spherical portion 18 passes through the through hole 34. At this time, the lower pressure plate 32 loses the pressure of the spherical portion 18, and under the action of the elastic member 31, the lower pressure plate 32 resets and moves upward. At this time, the outer port of the support slide 35 will abut against the lower slide column 17 and slide, thereby abutting against the lower end surface of the slide bar 39, and then pushing the slide bar 39. It slides upward, driving the two closed slide cylinders 27 located on the lower side of the floating plate 15 to slide upward respectively, thereby closing the strip holes 25 for surface water inlet. At the same time, due to the reset of the lower pressure plate 32, the closed slide cylinder 27 slides upward again to open, so that the strip holes 25 for the bottom water to enter are completely exposed. Therefore, after the water level drops to a certain level, the water from the bottom of the irrigation reservoir is completely extracted to irrigate the downstream irrigation area. Because after the water level in the irrigation reservoir drops to a certain level, the thermal stratification phenomenon in the water body will be significantly reduced. At this time, in order to ensure the water quality used for irrigation of the irrigation area, the water source from the bottom is completely used for irrigation, so that the irrigation quality of the crops in the irrigation area can be guaranteed at all times, and the healthy growth of the crops can be maximized.

[0028] It should be noted that, in order to facilitate the contact between the support slide 35 and the spherical portion 18, in this embodiment, the upper end surface of the support slide 35 is provided with a U-shaped groove 36, and the bottom arc surface of the spherical portion 18 can abut against and enter the U-shaped groove 36. Figure 5 .

[0029] It is also worth mentioning that, in this embodiment, reference Figure 8 , Fig. 9 and Fig.10 The double-tube mechanism 40 includes an outer pipe 42 fixedly mounted on the rear end face of the caisson body 10, an upper pipe portion 41 is arranged on the upper end of the outer pipe 42, an elastic bellows 44 is connected between the upper pipe portion 41 and the water outlet portion 22 located at the lower side of the floating plate 15, an open semi-elliptical inner pipe 45 is fixedly mounted in the inner cavity of the outer pipe 42, the water outlet portion 22 located in the inner cavity of the caisson body 10 passes through the inner cavity of the open semi-elliptical inner pipe 45, the outer pipe 42 near the caisson body 10 is used for the mixing section between the extracted surface water and the bottom water, and a drainage pipe 43 is fixedly connected to the open semi-elliptical inner pipe 45, and the mixed water is discharged from the drainage pipe 43 into the drainage channel; It should also be noted that an extension 47 is provided at the upper opening of the semi-elliptical inner tube 45, and the two extensions 47 are respectively inclined toward the middle direction of the opening of the semi-elliptical inner tube 45, so that the inner cavity of the outer tube 42 can be divided into three spaces by using the semi-elliptical inner tube 45, and the surface water of the irrigation area reservoir enters the upper tube 41 from the elastic bellows 44, and is diverted by the extension 47, so that part of the surface water enters from top to bottom The inside of the semi-elliptical inner tube 45 of the opening, and the rest of the water respectively enters the cavity between the semi-elliptical inner tube 45 of the opening and the outer tube 42, and the water at the bottom of the irrigation area reservoir directly enters the inner cavity of the semi-elliptical inner tube 45 of the opening through the water outlet 22, and a number of arc tubes 46 with rectangular cross-sections are evenly distributed and installed on the arc-shaped side walls on both sides of the semi-elliptical inner tube 45 of the opening, and the inner concave arc surface of each arc tube 46 faces the outlet direction of the water outlet of the water outlet 22; Therefore, when the water at the bottom of the irrigation area reservoir enters the inner cavity of the open semi-elliptical inner tube 45, the water flows out along the open semi-elliptical inner tube 45. At this time, the water flow will abut the concave arc surface of the arc tube 46 extending into the open semi-elliptical inner tube 45, which can break up the water flow at the bottom. At this time, the surface water falls between the two extensions 47, and is mixed in the process of breaking up the bottom water, so that the surface water and the bottom water are fully mixed. At the same time, the surface water diverted to the cavity between the open semi-elliptical inner tube 45 and the outer pipe 42 will pass through the inner cavity of the arc tube 46 and be injected into the bottom water, thereby further fully and quickly mixing the surface water and the bottom water, thereby ensuring the irrigation of the irrigation area.

[0030] In addition, in one embodiment, reference Figure 4 In order to prevent the discharge of impurities in the irrigation reservoir, an inner concave annular groove 24 is provided on the outer end surface of the cylindrical platform 23, and an annular filter 26 is installed in the inner concave annular groove 24. A layer of wire brush is provided on the inner cavity side wall of the closed slide 27, so that when the closed slide 27 slides up and down, the impurities attached to the annular filter 26 can also be removed.

[0031] In a specific implementation, the strip hole 25 in the cylindrical platform 23 located at the lower side of the floating plate 15 is exposed, and the floating plate 15 floats on the water surface of the irrigation area reservoir. When water is released to irrigate the irrigation area, the water pump in the water outlet 22 is turned on, and the water on the surface of the irrigation area reservoir enters the water pipe 21 through the cylindrical platform 23 located at the lower side of the floating plate 15, and the water on the bottom of the irrigation area reservoir enters the corresponding water pipe 21 through the cylindrical platform 23 located in the inner cavity of the caisson body 10, so that the surface water enters the upper pipe part 41 through the elastic bellows 44, and the bottom water enters the inner cavity of the open semi-elliptical inner pipe 45, and the water flows out along the open semi-elliptical inner pipe 45. At this time, the water flow will The concave arc surface of the semi-elliptical inner tube 45 extending from the arc tube 46 to the opening can break up the water flow at the bottom layer. At this time, the surface water falls between the two extension parts 47, and is mixed in the process of breaking up the bottom water, so that the surface water and the bottom water are fully mixed. At the same time, the surface water is diverted to the cavity between the semi-elliptical inner tube 45 and the outer pipe 42, and then it will pass through the inner cavity of the arc tube 46 and be injected into the bottom water, so that the surface water and the bottom water are further fully and quickly mixed, thereby ensuring the irrigation of the irrigation area. The fully mixed water enters the drainage pipe 43 and is discharged into the drainage channel; When the water level drops, the floating plate 15 will also move downward, so that the slide plates 14 on both sides slide downward, and then drive the two downward sliding columns 17 to slide downward together, and the spherical part 18 abuts against the supporting slide plate 35, thereby pressing the lower pressing plate 32 to slide downward. At this time, the elastic member 2 31 is gradually compressed. When the force generated is greater than that of the elastic member 1 30, the top plate 28 is pushed to slide downward, thereby driving the closed slide cylinder 27 to slide downward, and then part of the strip hole 25 is blocked. The more the closed slide cylinder 27 slides downward, the more the strip hole 25 is blocked, so that the amount of water entering the bottom layer of the irrigation area reservoir is getting less and less; When the water in the irrigation area reservoir drops to a certain level, the water level here drops by at least half, and the trapezoidal fixed block 37 will abut against the inclined surface at the upper end of the wedge-shaped column 29, so that the support slide plate 35 slides away from the center line of the caisson body 10, so that the spherical portion 18 is disengaged from the support slide plate 35, and the spherical portion 18 passes through the through hole 34. At this time, the lower pressure plate 32 loses the pressure of the spherical portion 18, and under the action of the elastic member 31, the lower pressure plate 32 resets and moves upward. At this time, the outer port of the support slide plate 35 will abut against the lower sliding column 17 and slide, thereby abutting against the lower end surface of the slide bar 39, and then pushing the slide bar 39 to slide upward, driving the floating plate 32 to slide upward. The two closing slides 27 on the lower side of 15 slide upwards respectively, thereby closing the strip holes 25 for surface water inlet. At the same time, due to the reset of the lower pressure plate 32, the closing slide 27 slides upwards again to open, so that the strip holes 25 for the bottom water to enter are completely exposed. Therefore, after the water level drops to a certain level, the water from the bottom of the irrigation reservoir is completely extracted to irrigate the downstream irrigation area. Because after the water level in the irrigation reservoir drops to a certain level, the thermal stratification phenomenon in the water body will be significantly reduced. At this time, in order to ensure the water quality used for irrigation of the irrigation area, the water source from the bottom is completely used for irrigation, so that the irrigation quality of the crops in the irrigation area can be guaranteed at all times, and the healthy growth of the crops can be maximized.

[0032] The above is only a specific implementation of the invention, but the protection scope of the invention is not limited to it. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the invention. Therefore, the protection scope of the invention should be based on the protection scope defined in the claims.

Claims

1. An engineering management system for water source discharge from an irrigation area reservoir, comprising a caisson (10), a slide plate (14) and a floating plate (15), characterized in that: The top of the slide plate (14) is fixedly mounted on the bottom of the floating plate (15), and the lower end of the slide plate (14) is slidably mounted on the left and right sides of the caisson body (10). A pumping mechanism (20) for adjusting the discharge amount of the bottom water source of the irrigation area reservoir according to the water level in the irrigation area reservoir is installed in the inner cavity of the caisson body (10) and between the bottom of the floating plate (15). A double-tube mechanism (40) for fully mixing and discharging the surface water source and the bottom water source of the irrigation area reservoir is installed on the rear end surface of the caisson body (10). The pumping mechanism (20) includes a cylindrical platform (23) mounted on the bottom of the caisson body (10) and the lower end surface of the floating plate (15). The outer side of the cylindrical platform (23) Strip holes (25) are distributed on the end surface, a water pipe (21) is fixedly connected to the cylindrical platform (23), the rear side of the water pipe (21) is connected to a water outlet (22), a water pump is installed in the water outlet (22), a closed slide (27) is slidably connected to the cylindrical platform (23), an elastic member (30) is connected between the top of the inner cavity of the closed slide (27) located at the bottom of the caisson body (10) and the corresponding cylindrical platform (23), and a control component for adjusting the hole size in the strip hole (25) at the bottom is installed between the closed slide (27) located at the bottom of the caisson body (10) and the closed slide (27) located at the bottom of the floating plate (15).

2. The engineering management system for water source discharge from an irrigation area reservoir according to claim 1 is characterized by: The control assembly comprises a top plate (28) fixedly mounted on the upper end face of the closed slide cylinder (27) located at the bottom of the caisson body (10), the left end face of the top plate (28) being slidably connected to the side wall of the inner cavity of the caisson body (10), a wedge-shaped column (29) being fixedly connected to the upper end face of the top plate (28), a lower pressure plate (32) being slidably mounted on the front and rear side walls of the inner cavity of the caisson body (10), and an elastic member (29) being connected between the lower end face of the lower pressure plate (32) and the top plate (28). (31), a through hole (34) is passed through the lower pressure plate (32), a sinking cavity (33) is arranged on the top of the lower pressure plate (32), a supporting slide plate (35) is slidably installed in the sinking cavity (33), a return spring is connected between the supporting slide plate (35) and the horizontal side wall of the sinking cavity (33), and a trapezoidal fixed block (37) corresponding to the position of the wedge column (29) is fixedly installed on the end face of the supporting slide plate (35) in the direction close to the center line of the caisson body (10).

3. The engineering management system for water source discharge from an irrigation area reservoir according to claim 2 is characterized by: The control assembly also includes a column (38) fixedly mounted on the closed slide (27) located at the bottom of the floating plate (15), a slide bar (39) being slidably connected in the inner cavity of the column (38), a compression spring being connected between the top of the slide bar (39) and the top wall of the inner cavity of the column (38), a connecting plate (16) being fixedly mounted on the slide plate (14), a lower sliding column (17) being fixedly connected at the bottom of the connecting plate (16), the lower sliding column (17) slidingly passing through the upper end surface of the caisson body (10) and entering the inner cavity of the caisson body (10), a spherical portion (18) being provided at the bottom end of the lower sliding column (17), an open groove (19) being provided on the side of the lower sliding column (17) close to the slide plate (14), the slide bar (39) being slidably connected in the open groove (19).

4. The engineering management system for water discharge from an irrigation area reservoir according to claim 1 is characterized by: The double-tube mechanism (40) comprises an outer tube member (42) fixedly mounted on the rear end face of the caisson body (10); an upper tube portion (41) is arranged at the upper end of the outer tube member (42); an elastic bellows (44) is connected between the upper tube portion (41) and the water outlet portion (22) located at the lower side of the floating plate (15); an open semi-elliptical inner tube (45) is fixedly mounted in the inner cavity of the outer tube member (42); the water outlet portion (22) located in the inner cavity of the caisson body (10) passes through and enters the inner cavity of the open semi-elliptical inner tube (45).

5. The engineering management system for water discharge from an irrigation area reservoir according to claim 4 is characterized by: An extension portion (47) is provided at the upper opening of the open semi-elliptical inner tube (45), and the two extension portions (47) are respectively inclined towards the middle direction of the opening of the open semi-elliptical inner tube (45).

6. The engineering management system for water source discharge from an irrigation area reservoir according to claim 5, characterized in that: A plurality of arc-shaped tubes (46) with rectangular cross-sections are evenly distributed and installed on the arc-shaped side walls on both sides of the open semi-elliptical inner tube (45), and the inner concave arc surface of each arc-shaped tube (46) faces the water outlet direction of the water outlet portion (22).

7. The engineering management system for irrigation area reservoir water source discharge according to claim 2 is characterized by: The upper end surface of the supporting slide plate (35) is provided with a U-shaped groove (36), and the bottom arc surface of the spherical portion (18) can abut against and enter the U-shaped groove (36).

8. The engineering management system for water discharge from an irrigation area reservoir according to claim 1, characterized in that: An inner concave annular groove (24) is arranged on the outer end surface of the cylindrical platform (23), an annular filter screen (26) is installed in the inner concave annular groove (24), and a layer of steel wire brush is arranged on the inner cavity side wall of the closed slide cylinder (27).

9. The engineering management system for water source discharge from an irrigation area reservoir according to claim 1, characterized in that: The left and right end surfaces of the caisson body (10) are respectively provided with slide grooves (12), and the slide grooves (12) are slidably embedded in the slide grooves (12).

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