A rice field water eutrophication prevention and control device and prevention and control method

Abstract

The present invention relates to the technical field of water body control, and discloses a paddy field water eutrophication control device, including a water storage tank, a connection tank and a water pump, the connection tank is connected to the paddy field, an impeller and a runner are rotatably arranged in the connection tank, blades are installed on the outside of the runner, a driving assembly is arranged between the impeller and the runner, and a cylinder is also arranged on the side of the connection tank, a piston is arranged inside the cylinder, and the piston is driven by the driving assembly. A paddy field water eutrophication control method: the stored water is extracted by a water pump and impacted on the impeller, so that the rotating impeller drives the runner to rotate through the driving assembly, thereby driving the blades to stir the stored water flowing into the connection tank, increasing the fluidity of the stored water and the contact with the air, the driving assembly also drives the piston to slide in the cylinder, continuously filling the stored water with air, further increasing the dissolved oxygen content of the stored water, so that the stored water with high dissolved oxygen content is irrigated into the paddy field, thereby effectively controlling the eutrophication of the paddy field water.

Description

Technical Field

[0001] The present invention relates to the technical field of water body control, and in particular to a paddy field water eutrophication control device and a control method. Background Art

[0002] Eutrophication of paddy field water refers to the situation where the water in the paddy field is rich in nutrients (such as nitrogen, phosphorus, etc.), which leads to an imbalance in the species distribution of the aquatic ecosystem and the rampant growth of a single species, disrupting the flow of matter and energy in the system, causing water quality deterioration, and further affecting the ecological balance of the water body and rice field production.

[0003] Eutrophication can be prevented and controlled by: reasonable fertilization, control of water inflow, plant planting, human intervention, and improved irrigation systems. It can also be reduced by regularly replacing water bodies or maintaining water fluidity to avoid water stagnation, thereby reducing the growth of algae.

[0004] Low dissolved oxygen content in water can also lead to eutrophication of water bodies. First of all, eutrophication of water bodies is mainly due to excessive content of nutrients such as nitrogen and phosphorus in water bodies, which leads to excessive reproduction of algae and other plankton, and then triggers a series of ecological problems. When the dissolved oxygen content in water bodies is low, it will affect the biochemical processes of the water body, especially the processes related to the decomposition of organic matter and the cycle of nitrogen and phosphorus. Specifically, the low dissolved oxygen environment will inhibit the activity of aerobic microorganisms and reduce their decomposition of organic matter, which will cause organic matter to accumulate in the water body and provide more nutrients for the growth of algae, further aggravating the eutrophication of water bodies. In response to the problem of low dissolved oxygen content in water bodies, some measures can be taken to increase the dissolved oxygen content in water bodies, such as increasing water fluidity, reducing organic pollution, using aerators, etc. These measures will help improve the ecological environment of water bodies and reduce the risk of eutrophication.

[0005] At present, when the existing technology is used to irrigate rice fields, water in the reservoir is usually directly pumped into the rice fields. However, the water in the reservoir is generally stored for a long time, and the dissolved oxygen content of the water body that is stagnant for a long time is low. Irrigating this water body into the rice fields will easily form an anaerobic environment in the rice field water body, thereby inhibiting the decomposition of organic matter by aerobic microorganisms, thereby easily causing eutrophication of the rice field water body. Therefore, it does not meet the existing needs. In this regard, we propose a eutrophication control device and control method for rice field water body. Summary of the invention

[0006] The present invention provides a paddy field water eutrophication prevention and control device and a paddy field water eutrophication prevention and control method, which have the advantages of increasing the dissolved oxygen content of paddy field water and improving the decomposition of organic matter by aerobic microorganisms, thereby achieving the beneficial effect of preventing and controlling the eutrophication of paddy field water. The present invention solves the problem that when irrigating paddy fields in the prior art mentioned in the above background technology, water in a reservoir is usually directly pumped into the paddy fields. However, the water in the reservoir is generally stored for a long time, and the dissolved oxygen content of the water that has been stagnant for a long time is low. Irrigating the water into the paddy fields easily forms an anaerobic environment in the paddy field water, and inhibits the decomposition of organic matter by aerobic microorganisms, thereby easily causing the problem of eutrophication of paddy field water.

[0007] The present invention provides the following technical solution: a rice field water eutrophication prevention and control device, comprising a water reservoir, a connecting pool arranged on the side of the water reservoir, and a water pump arranged between the water reservoir and the connecting pool, the connecting pool is communicated with the rice field, the side of the water pump is respectively connected with an inlet pipe and an outlet pipe, the end of the inlet pipe is arranged in the water reservoir, an impeller is rotatably arranged in the connecting pool, the end of the outlet pipe is arranged above the impeller, a runner is rotatably arranged in the connecting pool, blades are installed on the outside of the runner, a driving assembly is arranged between the impeller and the runner, a cylinder is also arranged on the side of the connecting pool, a piston is included in the cylinder, and the piston is also driven by the driving assembly.

[0008] As an optional solution of the paddy field water eutrophication prevention and control equipment described in the present invention, wherein: the water inlet end of the water pump is connected to the water inlet pipe, the water outlet end of the water pump is connected to the water outlet pipe, a shell is installed on the outer wall of the water reservoir, the water pump is installed in the shell, and the water inlet pipe and the water outlet pipe are both plugged into the side of the shell;

[0009] The water reservoir contains stored water, and a sediment layer is deposited at the bottom of the water reservoir.

[0010] As an optional solution for the rice field eutrophication control equipment described in the present invention, there is a float floating on the surface of the stored water, a slider is installed on the outside of the float, a groove body used in conjunction with the slider is opened on the side wall of the water reservoir, the end of the slider is slidably inserted in the groove body on the side wall of the water reservoir, the end of the water inlet pipe is inserted into the side of the float, the bottom of the water inlet pipe is located in the stored water, and the middle part of the water inlet pipe is set as a hose.

[0011] As an optional solution for the rice field eutrophication control equipment described in the present invention, the other end of the first lever is connected to a traction line, a winding shaft is rotatably arranged on the upper side of the floating plate, the end of the traction line is connected to the winding shaft, and the traction line is wound around the winding shaft, a gear is installed at the end of the winding shaft, and a first rack meshing with the gear is installed on the inner wall of the water reservoir, and when all the traction lines wound on the winding shaft are released, the bottom of the water inlet pipe is close to the upper side of the sedimentation layer.

[0012] As an optional solution of a paddy field eutrophication prevention and control device described in the present invention, wherein: a first electric contact is provided on one side of the water pump, the first electric contact is electrically connected to the water pump, the water pump is electrically connected to an external power supply, a first lever is rotatably provided inside the shell, a second electric contact is installed at one end of the first lever, the second electric contact is in contact with the upper side of the first electric contact, and the second electric contact is electrically connected to the water pump, a first spring is installed on the upper side of the second electric contact, and the upper end of the first spring is connected to the water inlet pipe;

[0013] A third electric contact is provided on the other side of the water pump, and the third electric contact is electrically connected to the water pump. A connecting rod is slidably inserted into the side of the shell, and a fourth electric contact is installed on the upper end of the connecting rod. The fourth electric contact abuts against the upper side of the third electric contact, and the fourth electric contact is electrically connected to the water pump. A second spring is installed on the upper side of the fourth electric contact, and the upper end of the second spring is connected to the water outlet pipe. A floating block is installed at the bottom of the connecting rod, and the floating block is arranged in the connecting pool.

[0014] As an optional solution of the paddy field eutrophication prevention and control equipment described in the present invention, wherein: the side of the cylinder is connected to an air pipe, the inside of the runner is provided with an air cavity, the end of the air pipe is inserted into the side of the runner and communicated with the air cavity, and the side of the runner is also provided with an air hole communicated with the air cavity;

[0015] A first one-way valve and a second one-way valve are inserted into the side of the cylinder, and the second one-way valve is connected to the air pipe. External air enters the cylinder through the first one-way valve, and the air in the cylinder enters the air cavity through the second one-way valve and the air pipe, thereby entering the stored water in the connection pool.

[0016] As an optional solution for the rice field eutrophication control equipment described in the present invention, the driving assembly includes a support rod installed at the bottom of the connecting pool, a second lever rotatably arranged on the top of the support rod, a first connecting rod rotatably installed at one end of the second lever, and a second connecting rod rotatably connected to the first connecting rod and the impeller at both ends.

[0017] As an optional solution for the rice field eutrophication control equipment described in the present invention, the driving assembly also includes a second rack arranged at the other end of the second lever, a limit rod slidably inserted into the inner side of the second rack, a semi-toothed ring installed on the outer side of the rotating wheel and meshing with the second rack, and a piston rod installed on the upper end of the second rack, and the end of the piston rod is rotatably connected to the piston.

[0018] As an optional solution for a rice field eutrophication control device described in the present invention, the support rod is located at one end close to the second rack, a groove is provided on the side of the second rack, the other end of the second lever is slidably inserted in the groove of the second rack, the bottom of the limit rod is connected to the bottom of the connecting pool, and a groove is provided at the bottom of the connecting pool, which is used in conjunction with the second rack.

[0019] The present invention also proposes a method for preventing and controlling eutrophication of paddy water, comprising the following specific steps:

[0020] S1. Start the water pump to pump the stored water in the reservoir into the connection pool;

[0021] S2. The stored water impacts the impeller through the outlet pipe, so that the impeller drives the runner and the blades through the drive assembly to stir the stored water flowing into the connection pool, thereby increasing the fluidity of the stored water and its contact with the air, thereby increasing the dissolved oxygen content of the stored water;

[0022] S3. The driving assembly drives the piston to reciprocate in the cylinder, continuously filling the stored water with air, further increasing the dissolved oxygen content of the stored water, so that the stored water with high dissolved oxygen content is irrigated into the rice field, thereby effectively preventing and controlling the eutrophication of the rice field water.

[0023] The present invention has the following beneficial effects:

[0024] 1. The paddy field water eutrophication prevention and control equipment and prevention and control method extracts the stored water in the reservoir through a water pump, so that the stored water impacts the impeller through the outlet pipe, thereby rotating the impeller, and the rotating impeller drives the left end of the second lever to move up and down through the second connecting rod and the first connecting rod, so that the right end of the second lever drives the second rack to move up and down, and the engagement of the second rack with the semi-toothed ring drives the runner to rotate, so that the blades flip up and down on the water surface of the stored water, which is convenient for stirring the stored water through the blades, increasing the fluidity of the stored water and the contact with the air, thereby increasing the dissolved oxygen content of the stored water, thereby effectively preventing and controlling the eutrophication of the paddy field water.

[0025] 2. The paddy field water eutrophication prevention and control equipment and prevention and control method, as the water pump draws the stored water in the reservoir into the connection pool, the floating plate drives the gear to drop as the water level in the reservoir drops, and the gear is meshed with the first rack to drive the winding shaft to rotate, and the traction line wound thereon is gradually released, until the bottom of the water inlet pipe is close to the top of the sediment layer, the traction line is completely released, so that one end of the first lever is pulled down by the floating plate through the traction line, so that the second electric contact at the other end of the first lever moves up and separates from the first electric contact, so that the water pump stops working due to the circuit breaking, and the debris and organic matter in the sediment layer are prevented from being drawn into the paddy field;

[0026] Moreover, as the water pump draws the stored water in the reservoir into the connecting pool, the water level in the connecting pool gradually rises. When the water level in the connecting pool rises to the position of the float, the water level at this time is the optimal water level for the rice field. The float drives the connecting rod upward due to the buoyancy of the water, so that the connecting rod drives the fourth electric contact piece upward and separates from the third electric contact piece, thereby causing the water pump to stop working due to a circuit break, thereby making the water level in the rice field at the optimal height, making it easier to control the start and stop of the water pump, thereby facilitating the control of the water level height in the rice field.

[0027] 3. The paddy field water eutrophication prevention and control equipment and prevention and control method, the second rack that moves up and down drives the piston to slide up and down in the cylinder through the piston rod. When the piston descends, the outside air enters the cylinder through the first one-way valve. When the piston rises, the air in the cylinder enters the air cavity through the second one-way valve and the air pipe, and is then filled into the stored water through the air hole. This reciprocating process facilitates the filling of more air into the stored water, further increasing the dissolved oxygen content in the stored water, thereby effectively preventing and controlling the eutrophication of the paddy field water body;

[0028] Moreover, since the lever arm on the left side of the second lever is greater than the lever arm on the right side, through the lever principle, the output force on the right side of the second lever is greater than the input force converted by the water flow on the left side impacting the impeller, thereby ensuring that the output force on the right side of the second lever is sufficient to drive the impeller and the piston rod to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the internal three-dimensional structure of the present invention.

[0030] Figure 2 It is a schematic diagram of the cutaway structure of the present invention.

[0031] Figure 3 It is a schematic structural diagram of the traction line in the first state of the present invention.

[0032] Figure 4 It is a schematic diagram of the second state structure of the traction line of the present invention.

[0033] Figure 5 It is a schematic diagram of the local three-dimensional structure of the present invention.

[0034] Figure 6 For the present invention Figure 2 Enlarged structural diagram at A in the middle.

[0035] Figure 7 For the present invention Figure 2 Enlarged structural diagram at B in the middle.

[0036] Figure 8 It is a schematic diagram of the connection structure between the piston and the piston rod of the present invention.

[0037] In the figure: 100, water reservoir; 110, connecting pool; 120, water pump; 121, water inlet pipe; 122, water outlet pipe; 123, shell; 124, stored water; 125, sedimentation layer; 130, floating plate; 131, slider; 140, first electric contact; 141, first lever; 142, second electric contact; 143, first spring; 144, traction line; 145, winding shaft; 146, gear; 147, first rack; 150, third electric contact; 151, connecting rod; 152, first Four electric contacts; 153, second spring; 154, float; 160, impeller; 170, rotor; 171, blades; 172, cylinder; 173, air pipe; 174, air cavity; 175, air hole; 176, piston; 177, first one-way valve; 178, second one-way valve; 180, drive assembly; 181, support rod; 182, second lever; 183, first connecting rod; 184, second connecting rod; 185, second rack; 186, limit rod; 187, half gear ring; 188, piston rod. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Embodiment 1: This embodiment aims to solve the problem that when irrigating rice fields in the prior art, water in the reservoir is usually directly pumped into the rice fields. However, the water in the reservoir is generally stored for a long time, and the dissolved oxygen content of the water in the reservoir is low. Irrigating the rice fields with this water will easily form an anaerobic environment in the water of the rice fields, thereby inhibiting the decomposition of organic matter by aerobic microorganisms, thereby easily causing the problem of eutrophication of the water in the rice fields. Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 7 and Figure 8 A paddy field water eutrophication prevention and control device includes a water reservoir 100, a connecting pool 110 arranged on the side of the water reservoir 100, and a water pump 120 arranged between the water reservoir 100 and the connecting pool 110, the connecting pool 110 is connected to the paddy field, and the bottom of the connecting pool 110 is located on the same horizontal plane as the bottom of the paddy field.

[0040] The side of the water pump 120 is fixedly connected with an inlet pipe 121 and an outlet pipe 122, the end of the inlet pipe 121 is arranged in the water reservoir 100, the water inlet end of the water pump 120 is connected to the inlet pipe 121, and the water outlet end of the water pump 120 is connected to the outlet pipe 122. The outer walls of the water reservoir 100 and the connection pool 110 are jointly fixedly installed with a shell 123, the water pump 120 is installed in the shell 123, and the inlet pipe 121 and the outlet pipe 122 are both plugged into the side of the shell 123. The water reservoir 100 stores stored water 124, and a sedimentation layer 125 is deposited at the bottom of the water reservoir 100. Since the stored water 124 is stationary for a long time, the debris or other organic matter therein is precipitated, thereby forming a sedimentation layer 125.

[0041] An impeller 160 is rotatably provided in the connection pool 110, the end of the water outlet pipe 122 is arranged above the impeller 160, a runner 170 is rotatably provided in the connection pool 110, a plurality of blades 171 are fixedly installed on the outer side of the runner 170, a driving assembly 180 is arranged between the impeller 160 and the runner 170, and the driving assembly 180 includes a support rod 181 fixedly installed at the bottom of the connection pool 110, a second lever 182 is rotatably provided at the top of the support rod 181, and one end of the second lever 182 A first connecting rod 183 is rotatably installed, and a second connecting rod 184 is rotatably installed at the end of the first connecting rod 183. The end of the second connecting rod is rotatably connected to the impeller 160. The driving assembly 180 also includes a second rack 185 arranged at the other end of the second lever 182, a limit rod 186 slidably inserted into the inner side of the second rack 185, a half-toothed ring 187 fixedly installed on the outer side of the rotating wheel 170 and meshing with the second rack 185, and a piston rod 188 fixedly installed at the upper end of the second rack 185.

[0042] A groove is provided on the side of the second rack 185, and the other end of the second lever 182 is slidably inserted in the groove of the second rack 185. The bottom of the limiting rod 186 is connected to the bottom of the connection pool 110, and a groove is provided at the bottom of the connection pool 110. The groove is used in conjunction with the second rack 185. Due to the limiting action of the limiting rod 186, the second rack 185 can only move vertically up and down, and the end of the second lever 182 moves in an arc on the vertical plane with the top of the support rod 181 as the center of the circle. Therefore, the end of the second lever 182 drives the second rack 185 to move up and down, and at the same time, the end of the second lever 182 slides in the groove of the second rack 185, thereby ensuring that the second lever 182 smoothly drives the second rack 185 to reciprocate up and down.

[0043] This embodiment also proposes a method for preventing and controlling eutrophication of paddy water, comprising the following specific steps:

[0044] S1. Start the water pump 120 to extract the stored water 124 in the reservoir 100 into the connection pool 110;

[0045] S2. The stored water 124 impacts the impeller 160 through the outlet pipe 122, so that the impeller 160 drives the runner 170 and the blades 171 through the drive assembly 180 to stir the stored water 124 flowing into the connection pool 110, thereby increasing the fluidity of the stored water 124 and the contact with the air, thereby increasing the dissolved oxygen content of the stored water 124;

[0046] S3. The driving assembly 180 drives the piston 176 to reciprocate in the cylinder 172, continuously filling the stored water 124 with air, further increasing the dissolved oxygen content of the stored water 124, so that the stored water 124 with high dissolved oxygen content is irrigated into the rice field, thereby effectively preventing and controlling the eutrophication of the rice field water body.

[0047] In this embodiment, the water 124 stored in the water reservoir 100 is extracted by the water pump 120, so that the stored water 124 impacts the impeller 160 through the water outlet pipe 122, thereby rotating the impeller 160, and the rotating impeller 160 drives the left end of the second lever 182 to move up and down through the second connecting rod 184 and the first connecting rod 183, so that the right end of the second lever 182 drives the second rack 185 to move up and down, and the second rack 185 is meshed with the half-toothed ring 187, so that the runner 170 is driven to rotate, so that the blades 171 flip up and down on the water surface of the stored water 124, which is convenient for passing. The stirring of the stored water 124 by the blades 171 increases the fluidity of the stored water 124 and its contact with the air, thereby increasing the dissolved oxygen content of the stored water 124, thereby effectively preventing and controlling the eutrophication of the paddy field water body, and solving as much as possible the problem that when irrigating paddy fields with the prior art, the water in the reservoir is usually directly pumped into the paddy field. However, the water in the reservoir is generally stored for a long time, and the dissolved oxygen content of the water body that is stagnant for a long time is low. Irrigating this water body into the paddy field can easily form an anaerobic environment in the paddy field water body, inhibiting the decomposition of organic matter by aerobic microorganisms, thereby easily causing the problem of eutrophication of the paddy field water body.

[0048] Embodiment 2: This embodiment is intended to solve the problem that it is inconvenient to control the start and stop of the water pump 120, thereby inconvenient to control the water level in the rice field. This embodiment is an improvement made on the basis of Embodiment 1. For details, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 A float 130 floats on the surface of the stored water 124, a slider 131 is fixedly installed on the outside of the float 130, the end of the slider 131 is set to a "T" shape, and a groove body used in conjunction with the slider 131 is opened on the side wall of the water reservoir 100. The end of the slider 131 is slidably inserted in the groove body on the side wall of the water reservoir 100, and the end of the water inlet pipe 121 is fixedly inserted on the side of the float 130. The bottom of the water inlet pipe 121 is located in the stored water 124, and the middle of the water inlet pipe 121 is set to a hose of sufficient length.

[0049] A first electric contact 140 is provided on one side of the water pump 120, the first electric contact 140 is electrically connected to the water pump 120, and the water pump 120 is electrically connected to an external power supply. A first lever 141 is rotatably provided inside the housing 123, a second electric contact 142 is fixedly installed on one end of the first lever 141, the second electric contact 142 abuts against the upper side of the first electric contact 140, and the second electric contact 142 is electrically connected to the water pump 120 through a cable, a first spring 143 is fixedly installed on the upper side of the second electric contact 142, the upper end of the first spring 143 is fixedly connected to the water inlet pipe 121, and in the initial state, the first spring 143 is in a compressed state, so that the second electric contact 142 is more closely abutted against the first electric contact 140, so that the second electric contact 142 and the first electric contact 140 maintain a good electrical connection;

[0050] A traction line 144 is fixedly connected to the other end of the first lever 141, and a winding shaft 145 is rotatably arranged on the upper side of the floating plate 130. The end of the traction line 144 is fixedly connected to the winding shaft 145, and the excess traction line 144 is wound around the winding shaft 145. A gear 146 is fixedly installed at the end of the winding shaft 145, and a first rack 147 meshing with the gear 146 is fixedly installed on the inner wall of the water reservoir 100. When all the traction lines 144 wound around the winding shaft 145 are released, the bottom of the water inlet pipe 121 is close to the upper side of the sedimentation layer 125, but still has a distance from the sedimentation layer 125.

[0051] It should be noted that the length of the traction line 144 is sufficient to make the bottom of the water inlet pipe 121 contact with the bottom of the water reservoir 100. The middle part of the traction line 144 can be knotted according to the thickness of the sedimentation layer 125 to shorten the length of the traction line 144, so as to adjust the maximum descent height of the water inlet pipe 121 according to the thickness of the sedimentation layer 125, so that the bottom of the water inlet pipe 121 can have a distance from the sedimentation layer 125 of different thicknesses, thereby preventing impurities in the sedimentation layer 125 from being sucked into the water inlet pipe 121.

[0052] A third electric contact 150 is provided on the other side of the water pump 120, and the third electric contact 150 is electrically connected to the water pump 120. A connecting rod 151 is slidably inserted on the side of the shell 123, and a fourth electric contact 152 is fixedly installed on the upper end of the connecting rod 151. The fourth electric contact 152 abuts against the upper side of the third electric contact 150, and the fourth electric contact 152 is electrically connected to the water pump 120 through a cable. A second spring 153 is installed on the upper side of the fourth electric contact 152, and the upper end of the second spring 153 is fixedly connected to the water outlet pipe 122, and the second spring 153 is also in a compressed state, so that the fourth electric contact 152 and the third electric contact 150 maintain a good electrical connection, so that the water pump 120 forms a complete circuit loop with the external power supply to ensure the normal operation of the water pump 120, and a floating block 154 is fixedly installed at the bottom of the connecting rod 151, and the floating block 154 is arranged in the connection pool 110, and the height of the floating block 154 is the optimal water level height of the rice field.

[0053] In this embodiment: as the water pump 120 draws the stored water 124 in the water reservoir 100 into the connecting pool 110, the floating plate 130 drives the gear 146 to descend as the water level in the water reservoir 100 decreases, and the gear 146 is meshed with the first rack 147 to drive the winding shaft 145 to rotate, and the traction line 144 wound thereon is gradually released, until the bottom of the water inlet pipe 121 is close to the top of the sediment layer 125, the traction line 144 is completely released, so that one end of the first lever 141 is pulled down by the floating plate 130 through the traction line 144, so that the second electric contact 142 at the other end of the first lever 141 moves up and separates from the first electric contact 140, so that the water pump 120 stops working due to the circuit breaking, avoiding the sundries and organic matter in the sediment layer 125 from being drawn into the rice field;

[0054] Moreover, as the water pump 120 draws the stored water 124 in the reservoir 100 into the connecting pool 110, the water level in the connecting pool 110 gradually rises. When the water level in the connecting pool 110 rises to the position of the float 154, the water level at this time is the optimal water level for the rice field, and the float 154 drives the connecting rod 151 to move upward due to the buoyancy of the water, so that the connecting rod 151 drives the fourth electric contact 152 to move upward and separate from the third electric contact 150, so that the water pump 120 can also stop working due to the circuit break, so that the water level in the rice field is at the optimal height, which is convenient for controlling the start and stop of the water pump 120, thereby facilitating the control of the water level height in the rice field.

[0055] Embodiment 3: This embodiment is intended to promote the solution of the problem that it is inconvenient to drive the blades 171 to stir the stored water 124, and it is inconvenient to drive the piston 176 to fill the air in the cylinder 172 into the stored water 124, thereby it is inconvenient to increase the dissolved oxygen content in the stored water 124, which easily affects the effect of eutrophication prevention and control of rice field water bodies. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8 A cylinder 172 is also fixedly provided on the side of the connection pool 110 through a mounting frame, and a piston 176 is slidably provided inside the cylinder 172 , and the piston 176 is also driven by the driving assembly 180 .

[0056] An air pipe 173 is connected to the side of the cylinder 172, an air cavity 174 is opened inside the runner 170, the end of the air pipe 173 is inserted into the side of the runner 170 and communicated with the air cavity 174, and the side of the runner 170 is also provided with an air hole 175 communicated with the air cavity 174, a first one-way valve 177 and a second one-way valve 178 are inserted into the side of the cylinder 172, and the second one-way valve 178 is connected to the air pipe 173, and the outside air enters the cylinder 172 through the first one-way valve 177, and the air in the cylinder 172 enters the air cavity 174 through the second one-way valve 178 and the air pipe 173, and then enters the stored water 124 in the connection pool 110, the upper end of the piston rod 188 is rotatably connected to the piston 176, and the support rod 181 is located at one end close to the second rack 185, and the force on the left and right sides of the second lever 182 is adjusted by changing the length of the force arm of the second lever 182.

[0057] In this embodiment, the second rack 185 that moves up and down drives the piston 176 to slide up and down in the cylinder 172 through the piston rod 188. When the piston 176 descends, the outside air enters the cylinder 172 through the first one-way valve 177. When the piston 176 rises, the air in the cylinder 172 enters the air cavity 174 through the second one-way valve 178 and the air pipe 173, and is then filled into the stored water 124 through the air hole 175. This reciprocating process facilitates the filling of more air into the stored water 124, further increasing the dissolved oxygen content in the stored water 124, thereby effectively preventing and controlling the eutrophication of the paddy field water body.

[0058] Moreover, since the force arm on the left side of the second lever 182 is greater than the force arm on the right side, through the lever principle, the output force on the right side of the second lever 182 is greater than the input force converted by the left side water flow impacting the impeller 160, thereby ensuring that the output force on the right side of the second lever 182 is sufficient to drive the impeller 170 and the piston rod 188 to move.

[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 above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A paddy field water eutrophication prevention and control device, comprising a water reservoir (100), a connecting pool (110) arranged at the side of the water reservoir (100), and a water pump (120) arranged between the water reservoir (100) and the connecting pool (110), characterized in that: The connection pool (110) is in communication with the rice field; the side of the water pump (120) is respectively connected with a water inlet pipe (121) and a water outlet pipe (122); the end of the water inlet pipe (121) is arranged in the water reservoir (100); an impeller (160) is rotatably arranged in the connection pool (110); the end of the water outlet pipe (122) is arranged above the impeller (160); a runner (170) is rotatably arranged in the connection pool (110); blades (171) are installed on the outside of the runner (170); a driving assembly (180) is arranged between the impeller (160) and the runner (170); a cylinder (172) is also arranged on the side of the connection pool (110); a piston (176) is included in the cylinder (172); the piston (176) is also driven by the driving assembly (180); The water inlet end of the water pump (120) is connected to the water inlet pipe (121), and the water outlet end of the water pump (120) is connected to the water outlet pipe (122); a shell (123) is installed on the outer wall of the water reservoir (100); the water pump (120) is installed in the shell (123), and the water inlet pipe (121) and the water outlet pipe (122) are both plugged into the side of the shell (123); The water reservoir (100) contains stored water (124), and a sediment layer (125) is deposited at the bottom of the water reservoir (100); A floating plate (130) floats on the surface of the stored water (124), a slider (131) is installed on the outside of the floating plate (130), a groove body used in conjunction with the slider (131) is provided on the side wall of the water reservoir (100), the end of the slider (131) is slidably inserted into the groove body on the side wall of the water reservoir (100), the end of the water inlet pipe (121) is inserted into the side of the floating plate (130), the bottom of the water inlet pipe (121) is located in the stored water (124), and the middle of the water inlet pipe (121) is arranged as a hose; A first electric contact piece (140) is arranged on one side of the water pump (120), the first electric contact piece (140) is electrically connected to the water pump (120), and the water pump (120) is electrically connected to an external power supply; a first lever (141) is rotatably arranged inside the housing (123), a second electric contact piece (142) is installed on one end of the first lever (141), the second electric contact piece (142) abuts against the upper side of the first electric contact piece (140), and the second electric contact piece (142) is electrically connected to the water pump (120); a first spring (143) is installed on the upper side of the second electric contact piece (142), and the upper end of the first spring (143) is connected to the water inlet pipe (121); A third electric contact (150) is provided on the other side of the water pump (120), and the third electric contact (150) is electrically connected to the water pump (120); a connecting rod (151) is slidably inserted into the side of the housing (123); a fourth electric contact (152) is installed on the upper end of the connecting rod (151); the fourth electric contact (152) abuts against the upper side of the third electric contact (150), and the fourth electric contact (152) is electrically connected to the water pump (120); a second spring (153) is installed on the upper side of the fourth electric contact (152), and the upper end of the second spring (153) is connected to the water outlet pipe (122); a floating block (154) is installed on the bottom of the connecting rod (151), and the floating block (154) is arranged in the connection pool (110); The other end of the first lever (141) is connected to a traction line (144); a winding shaft (145) is rotatably provided on the upper side of the floating plate (130); an end of the traction line (144) is connected to the winding shaft (145), and the traction line (144) is wound on the winding shaft (145); a gear (146) is installed at the end of the winding shaft (145); a first rack (147) meshing with the gear (146) is installed on the inner wall of the water reservoir (100); when the traction line (144) wound on the winding shaft (145) is completely released, the bottom of the water inlet pipe (121) is close to the upper side of the sedimentation layer (125).

2. A paddy field water eutrophication prevention and control device according to claim 1, characterized in that: The side of the cylinder (172) is connected to an air pipe (173), an air cavity (174) is provided inside the rotating wheel (170), an end of the air pipe (173) is inserted into the side of the rotating wheel (170) and communicates with the air cavity (174), and an air hole (175) is also provided on the side of the rotating wheel (170) and communicates with the air cavity (174); A first one-way valve (177) and a second one-way valve (178) are plugged into the side of the cylinder (172); the second one-way valve (178) is connected to the air pipe (173); external air enters the cylinder (172) through the first one-way valve (177); the air in the cylinder (172) enters the air cavity (174) through the second one-way valve (178) and the air pipe (173), and thus enters the stored water (124) in the connection pool (110).

3. The paddy field water eutrophication prevention and control device according to claim 1, characterized in that: The driving assembly (180) comprises a support rod (181) mounted at the bottom of the connection pool (110), a second lever (182) rotatably mounted on the top of the support rod (181), a first connecting rod (183) rotatably mounted on one end of the second lever (182), and a second connecting rod (184) having two ends rotatably connected to the first connecting rod (183) and the impeller (160), respectively.

4. A paddy field water eutrophication prevention and control device according to claim 3, characterized in that: The driving assembly (180) further comprises a second rack (185) arranged at the other end of the second lever (182), a limit rod (186) slidably inserted into the inner side of the second rack (185), a half-toothed ring (187) mounted on the outer side of the rotating wheel (170) and meshing with the second rack (185), and a piston rod (188) mounted on the upper end of the second rack (185), wherein the end of the piston rod (188) is rotatably connected to the piston (176).

5. A paddy field water eutrophication prevention and control device according to claim 4, characterized in that: The support rod (181) is located at one end close to the second rack (185), a groove is provided on the side of the second rack (185), the other end of the second lever (182) is slidably inserted into the groove of the second rack (185), the bottom of the limit rod (186) is connected to the bottom of the connection pool (110), and a groove is provided at the bottom of the connection pool (110), and the groove is used in conjunction with the second rack (185).

6. A method for controlling eutrophication of paddy water bodies, according to a device for controlling eutrophication of paddy water bodies according to any one of claims 1 to 5, characterized in that: The specific steps include: S1. Starting the water pump (120) to pump the stored water (124) in the water reservoir (100) into the connection pool (110); S2. The stored water (124) impacts the impeller (160) through the water outlet pipe (122), so that the impeller (160) drives the runner (170) and the blades (171) through the drive assembly (180) to stir the stored water (124) flowing into the connection pool (110), thereby increasing the fluidity of the stored water (124) and the contact with air, thereby increasing the dissolved oxygen content of the stored water (124); S3. The driving assembly (180) drives the piston (176) to reciprocate in the cylinder (172), continuously filling the stored water (124) with air, further increasing the dissolved oxygen content of the stored water (124), so that the stored water (124) with high dissolved oxygen content is irrigated into the rice field, thereby effectively preventing and controlling the eutrophication of the rice field water body.

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