Fertilization system

Abstract

The invention discloses a fertilization system, and belongs to the technical field of agricultural equipment, the fertilization system comprises a cylinder, a stirring device and a floating ball liquid level meter fixed on the cylinder, the floating ball liquid level meter is electrically connected with the stirring device, the floating ball liquid level meter adopted by the system is high in measurement precision, a material adopted by a floating ball is resistant to corrosion and not easy to block, automatic measurement of fertilizer liquid is realized, and the system is simple in structure and convenient to operate. The stirring device is used for circulating and stirring the fertilizer, and the two water outlet pipes are designed to be inclined in two directions, so that powerful water flow can be formed to effectively strike the cylinder wall and the cylinder bottom of the cylinder body, fertilizer particles are more fully mixed, and the stirring efficiency is improved. Through cooperation of the floating ball liquid level meter and the stirring device, automation of the fertilization system is achieved, and the system is simple in structure and convenient to operate and maintain.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural equipment, and in particular relates to a fertilization system. Background Art

[0002] In traditional fertilization systems, fertilizer level meters are expensive, not durable, and easy to clog. The pressure-introduction holes of the level meter will be clogged due to the accumulation of impurities, sediments, aquatic plants and other substances in the liquid. The components around the pressure-introduction holes will be damaged or worn due to long-term use, physical impact or chemical corrosion, resulting in gas or liquid leakage. The unreasonable hole size, irregular shape or rough inner wall of the pressure-introduction holes will affect the transmission of the pressure signal, resulting in the pressure signal cannot be accurately transmitted to the sensitive element of the level meter, affecting the measurement performance of the level meter. At the same time, there may be gas in the container or pipeline, and these gases will enter the level meter through the pressure-introduction holes. The above problems lead to problems such as easy clogging, non-durability, high cost, and inaccurate measurement during measurement.

[0003] The stirring device in the fertilization system has obvious disadvantages due to the design limitations of the stirring method and the stirring mechanism, such as uneven stirring of the fertilizer, slow dissolution of the fertilizer, easy adhesion to the wall, low discharge efficiency, and high maintenance cost.

[0004] Currently, no effective solution to the above problems has been found. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a fertilization system in response to the above shortcomings, which solves the problems of easy clogging, poor durability, high cost, inaccurate measurement, etc. of the liquid level meter during measurement, uneven stirring of the stirring device, and low fertilizer dissolution and discharge efficiency.

[0006] In order to solve the above technical problems, the technical solution adopted in the present invention is as follows: A fertilizing system includes a cylinder, a stirring device and a float level gauge fixed on the cylinder. The float level gauge is electrically connected to the stirring device.

[0007] Furthermore, the cylinder is provided with a feeding port, a fertilizer extraction pipe, a sewage discharge pipe and a water injection pipe.

[0008] One end of the fertilizer extraction pipe extends to the bottom of the cylinder, and the other end of the fertilizer extraction pipe extends out of the cylinder. A third valve is provided on the fertilizer extraction pipe.

[0009] One end of the sewage discharge pipe is communicated with the stirring device, and the other end of the sewage discharge pipe extends out of the cylinder.

[0010] The sewage pipe is provided with a first valve.

[0011] Furthermore, the stirring device includes a stirring pump and a circulation pipe arranged in the cylinder.

[0012] The upper end of the circulation pipe extends out of the cylinder and is connected to one end of the sewage pipe and the water outlet end of the stirring pump through the second valve.

[0013] The lower end of the circulation pipe extends to the bottom of the cylinder and is connected to a transverse pipe. Both ends of the transverse pipe are connected to water outlet pipes with opposite water outlet directions. The water outlet pipes are arranged vertically to the transverse pipe and are arranged downwardly inclined.

[0014] Furthermore, the water outlet pipe has a downward inclination angle of 15°.

[0015] Furthermore, the stirring device also includes a controller, and the controller is electrically connected to the float level meter.

[0016] Furthermore, the float level gauge includes a float and a meter; the meter is fixed on the top of the cylinder, and a wire take-up device and a fixedly connected meter wheel and encoder are provided inside the meter.

[0017] A pull rope is wound around the meter wheel, one end of the pull rope is fixedly connected to the float, and the other end of the pull rope is arranged in the wire-reeling device. The encoder is electrically connected to the controller.

[0018] Furthermore, the float is a hollow metal ball suspended in the cylinder and floating above the measured liquid level.

[0019] Furthermore, a fertilization system includes the following control steps: Step S1: Set the total amount of fertilizing liquid M1, the total amount of fertilizer input F1, the mixing ratio of the single fertilizer input amount FT and water, the stirring liquid level height H2, and the stirring time, and then enter step S2; Step S2: Control the fertilizer to be fed into the cylinder through the feeding port according to the preset single fertilizer feeding amount FT, and then proceed to step S3; Step S3: Control the water injection pump to start, water is injected into the cylinder through the injection pipe according to a preset ratio, proceeds to step S4; Step S4: The float level gauge measures the liquid level and feeds the measured liquid level information back to the controller. The controller compares the received liquid level H1 with the preset stirring liquid level H2. When H1 ≥ H2, the process proceeds to step S5, otherwise it returns to step S3. Step S5: Control the water injection pump to stop running, the first valve is closed, the second valve is opened, the stirring pump is started, when the preset stirring time is reached, proceeds to step S6; Step S6: Control the stirring pump to stop running, the third valve is opened, the fertilizer pump is turned on, the liquid fertilizer is fertilized through the fertilizer pipe, the liquid level drops by ΔH, and the cumulative amount of liquid fertilizer M2 is calculated, and the amount of liquid fertilizer M2 is compared with the total amount of liquid fertilizer M1. When M2 ≥ M1, step S8 is performed, otherwise step S7 is performed; Step S7: Control the fertilizer pump to stop running, close the third valve, open the first valve, start the sewage pump, and empty the liquid in the cylinder. When the float level gauge measures the liquid level H3 = 0, turn off the sewage pump and return to step S2; Step S8: Control the fertilizer pump to stop running, close the second valve, close the third valve, open the first valve, and open the sewage pump. When the float level gauge measures the liquid level H4=0, fertilization ends.

[0020] Furthermore, in step S1, the total amount of fertilizer liquid M1 required is used to calculate the total amount of fertilizer input F1, and then the maximum single fertilizer input amount FD is calculated according to the cylinder volume and the mixing ratio. The controller can calculate the amount of fertilizer already input FY, and the remaining fertilizer input amount FS = the total amount of fertilizer input F1 - the amount of fertilizer already input FY; If the remaining fertilizer amount FS ≤ the single maximum fertilizer amount FD, then the single fertilizer amount FT = the remaining fertilizer amount FS; Otherwise, the single fertilizer amount FT = the single maximum fertilizer amount FD.

[0021] The present invention adopts the above technical solution, and has the following advantages compared with the prior art: (1) The system uses a float level meter, which does not require a flow meter. The material used for the float is corrosion-resistant and not easy to clog. The level-volume conversion is combined with dynamic calibration to reduce measurement errors.

[0022] (2) When the system's stirring device is stirring, the two water outlet pipes adopt a bidirectional inclined design, which can form a powerful water flow and effectively hit the cylinder wall and bottom of the cylinder, so that the fertilizer particles are more fully mixed, not easy to clog, shortening the stirring time and improving the stirring efficiency.

[0023] (3) Through the cooperation of the float level meter and the stirring device, continuous fertilization operation is achieved. The system structure is simple and easy to operate and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of a fertilization system in accordance with an embodiment of the present invention; Figure 2 This is a cross-sectional view of the cylinder of a fertilization system in accordance with an embodiment of the present invention; Figure 3 Is a structural diagram of the meter embodiment of the present invention; Figure 4This is a control flow chart of a fertilization system according to an embodiment of the present invention; In the figure: 1-first valve, 2-second valve, 3-float, 4-fertilizer extraction pipe, 5-circulation pipe, 51-transverse pipe, 52-water outlet pipe, 6-mixing pump, 7-sewage pipe, 8-water injection pipe, 9-metering device, 91-meter wheel, 92-encoder, 93-take-up device, 10-feeding port, 11-controller, 12-cylinder, 13-third valve. DETAILED DESCRIPTION

[0025] The present invention will be further described below. Those skilled in the art will be able to understand from the following examples that these examples are not intended to limit the technical solutions of the present invention, but are merely intended to fully illustrate how to implement the invention.

[0026] like Figure 1-4 As shown, a fertilizing system includes a cylinder 12, a stirring device and a float level gauge fixed on the cylinder 12, and the float level gauge is electrically connected to the stirring device.

[0027] The cylinder 12 is provided with a feeding port 10, a fertilizer extraction pipe 4, a sewage discharge pipe 7 and a water injection pipe 8.

[0028] One end of the fertilizer extraction pipe 4 extends to the bottom of the cylinder 12 , and the other end of the fertilizer extraction pipe 4 extends out of the cylinder 12 . A third valve 13 is provided on the fertilizer extraction pipe 4 .

[0029] One end of the sewage pipe 7 is connected to the stirring device, and the other end of the sewage pipe 7 extends out of the cylinder 12. The sewage pipe 7 is provided with a first valve 1.

[0030] The upper end of the feeding port 10 is connected to an automatic feeding device. The fertilizer is fed into the cylinder 12 through the feeding port 10 by the automatic feeding device. Water is injected into the cylinder 12 through the water injection pipe 8, and then stirred evenly by the stirring device. The fertilizer extraction pipe 4 extracts the fertilizer liquid in the cylinder 12, and finally the dirt or excess fertilizer liquid in the cylinder 12 is discharged through the sewage pipe 7.

[0031] The stirring device includes a stirring pump 6 and a circulation pipe 5 arranged in the barrel 12 , and the stirring pump 6 is arranged at the bottom of the barrel 12 .

[0032] The upper end of the circulation pipe 5 extends out of the cylinder 12 and connects to one end of the sewage pipe 7 and the water outlet of the stirring pump 6 through the second valve 2. The lower end of the circulation pipe 5 extends to the bottom of the cylinder 12 and is connected to a transverse pipe 51. The two ends of the transverse pipe 51 are connected to water outlet pipes 52 with opposite water outlet directions. The water outlet pipes 52 are arranged perpendicular to the transverse pipe 51 and are arranged at a downward angle.

[0033] The water outlet pipe 52 is tilted downward at an angle of 15 degrees. When stirring, the two water outlet pipes 52 discharge water at the same time, which can form a powerful water flow to effectively hit the wall and bottom of the cylinder 12, so that the fertilizer particles are more fully mixed and the stirring efficiency is improved.

[0034] The stirring device further includes a controller 11 , which is electrically connected to the float level meter.

[0035] The fertilizer extraction pipe 4 is provided with a fertilizer extraction pump, the sewage discharge pipe 7 is provided with a sewage discharge pump, and the water injection pipe 8 is provided with a water injection pump.

[0036] The automatic feeding equipment, fertilizer pump, sewage pump and water injection pump are all existing equipment (not shown in the figure), and can be remotely controlled to start and stop operation through the controller 11.

[0037] The float level gauge includes a float 3 and a meter 9 . The meter 9 is fixed to the top of the cylinder 12 . A wire take-up device 92 , a meter wheel 91 and an encoder 93 are fixedly connected to the meter 9 . The encoder 93 is electrically connected to the controller 11 .

[0038] A pull rope is wound around the meter wheel 91 , one end of the pull rope is fixedly connected to the float 3 , and the other end of the pull rope is arranged in the take-up device 92 . The pull rope is hard and can be wound, such as a thin steel wire rope.

[0039] The float 3 is a hollow metal ball, suspended in the cylinder 12 and floating above the measured liquid level. The weight of the float 3 is greater than the tension of the automatic rebound take-up device 92, and the weight of the float 3 - the buoyancy is less than the tension of the automatic rebound take-up device 92. The pull rope of the take-up device 92 can automatically rebound the pull rope tension.

[0040] The first valve 1 , the second valve 2 and the third valve 13 are all solenoid valves, which can be remotely controlled to start and close via the controller 11 .

[0041] Control the automatic feeding equipment to feed the fertilizer into the barrel 12 through the feeding port 10, control the water injection pump to start, and inject water into the barrel. After the water injection is completed, control the water injection pump to stop running, close the first valve 1, open the second valve 2, and start the stirring pump 6 to stir the liquid. When the stirring time is reached, control the stirring pump 6 to stop running, open the third valve 13, and start the fertilizer pump to fertilize. After the fertilization of each barrel of fertilizer liquid is completed, control the fertilizer pump to stop running, open the first valve 1, and start the sewage pump to discharge the residual liquid in the barrel 12.

[0042] Working principle of float level gauge: When the liquid level in the container fluctuates, the float 3 also floats up and down. The floating of the float 3 drives the rotation of the meter wheel 91 through the automatic rebound and take-up device 92. The rotation of the meter wheel 91 drives the rotation of the input shaft of the encoder 93. The encoder 93 converts the rotation into a pulse signal. The controller 11 records the direction and number of the pulse signals and calculates the height of the liquid level rise or fall. The height of the liquid level in the container needs to be calibrated during initial use. The real-time liquid level is obtained by calculating the calibrated liquid level and the movement distance of the float 3.

[0043] The controller 11 receives the signal from the float level gauge, monitors the change ΔH of the liquid level in the cylinder 12 through the float level gauge, and calculates the change M of the liquid volume in the cylinder 12 based on the cross-sectional area πr² of the cylinder 12, that is, M=πr²×ΔH, where r is the radius of the cylinder 12; the controller 11 can calculate the cumulative amount of fertilized liquid M2, and at the same time, control the operation of the stirring device, and the start and stop of the valve and pump according to the preset logic and parameters.

[0044] The above fertilization system is realized, including the following control steps: Step S1: Set the total amount of fertilizing liquid M1, the total amount of fertilizer input F1, the mixing ratio of the single fertilizer input amount FT and water, the stirring liquid level height H2, and the stirring time, and then enter step S2; Step S2: Control the fertilizer to be fed into the cylinder 12 through the feeding port 10 according to the preset single fertilizer feeding amount FT, and then enter step S3 Step S3: Control the water injection pump to start, water is injected into the cylinder 12 through the injection pipe 8 according to a preset ratio, proceeds to step S4; Step S4: The float level gauge measures the liquid level and feeds the measured liquid level information back to the controller 11. The controller 11 compares the received liquid level H1 with the preset stirring liquid level H2. When H1 ≥ H2, the process proceeds to step S5, otherwise it returns to step S3. Step S5: Control the first control injection pump to stop running, the first valve 1 is closed, the second valve 2 is opened, the stirring pump 6 is started, when the preset stirring time is reached, proceeds to step S6; Step S6: Control the stirring pump 6 to stop running, the third valve 13 to open, and the fertilizer pump to start, so that the liquid fertilizer is applied through the fertilizer pipe 4. The cumulative amount of fertilizer liquid M2 is calculated based on the liquid level drop value ΔH, and the amount of fertilizer liquid M2 is compared with the total amount of fertilizer liquid M1. When M2 ≥ M1, the process proceeds to step S8, otherwise the process proceeds to step S7; Step S7: Control the fertilizer pump to stop running, close the third valve 13, open the first valve 1, start the sewage pump, and empty the liquid in the cylinder 12. When the float level gauge measures the liquid level H3 = 0, turn off the sewage pump and return to step S2; Step S8: Control the fertilizer pump to stop running, close the second valve 2, close the third valve 13, open the first valve 1, and open the sewage pump. When the float level gauge measures the liquid level H4=0, fertilization ends.

[0045] Specifically, in step S1, the total amount of fertilizer liquid M1 required is used to calculate the total amount of fertilizer input F1, and then the maximum single fertilizer input amount FD is calculated based on the volume of the cylinder 12 and the mixing ratio. The controller 11 can calculate the amount of fertilizer already input FY, and the remaining fertilizer input amount FS = the total amount of fertilizer input F1 - the amount of fertilizer already input FY; If the remaining fertilizer amount FS ≤ the single maximum fertilizer amount FD, then the single fertilizer amount FT = the remaining fertilizer amount FS; Otherwise, the single fertilizer amount FT = the single maximum fertilizer amount FD.

[0046] The system of the present invention is suitable for liquid level measurement and stirring control of various fertilizers through the coordinated use of a stirring device and a float liquid level gauge. The fertilizer feeding is accurate, the stirring is more uniform, and it is not easy to be blocked. The system structure is simple, the maintenance cost is low, and the working efficiency is high.

[0047] The foregoing is an example of the best mode of carrying out the present invention. Any portion not described in detail herein is common knowledge within the skill of one of ordinary skill in the art. The scope of protection of the present invention is determined by the claims. Any equivalent transformation based on the technical teachings of the present invention is also within the scope of protection of the present invention.

Claims

1. A fertilization system, characterized in that : It includes a cylinder (12), a stirring device and a float liquid level gauge fixed on the cylinder (12); The float level gauge is electrically connected to the stirring device.

2. A fertilization system according to claim 1, characterized in that : The cylinder (12) is provided with a feeding port (10), a fertilizer extraction pipe (4), a sewage pipe (7) and a water injection pipe (8); One end of the fertilizer extraction pipe (4) extends to the bottom of the cylinder (12), and the other end of the fertilizer extraction pipe (4) extends outside the cylinder (12). The fertilizer extraction pipe (4) is provided with a third valve (13); One end of the sewage pipe (7) is connected to the stirring device, and the other end of the sewage pipe (7) extends outside the cylinder (12); The sewage pipe (7) is provided with a first valve (1).

3. A fertilization system according to claim 1, characterized in that : The stirring device includes a stirring pump (6) and a circulation pipe (5) arranged in the cylinder (12); The upper end of the circulation pipe (5) extends out of the cylinder (12) and is connected to one end of the sewage pipe (7) and the water outlet end of the stirring pump (6) through the second valve (2); The lower end of the circulation pipe (5) extends to the bottom of the cylinder (12) and is connected to a transverse pipe (51). Both ends of the transverse pipe (51) are connected to water outlet pipes (52) with opposite water outlet directions. The water outlet pipes (52) are arranged perpendicular to the transverse pipe (51) and are arranged to be inclined downward.

4. A fertilization system according to claim 3, characterized in that The outlet pipe (52) has a downward inclination angle of 15°.

5. A fertilization system according to claim 1, characterized in that : The stirring device further comprises a controller (11), and the controller (11) is electrically connected to the float liquid level meter.

6. A fertilization system according to claim 1, characterized in that : The float level gauge comprises a float (3) and a meter (9); The meter (9) is fixed to the top of the cylinder (12), and the meter (9) is provided with a take-up device (92) and a fixedly connected meter wheel (91) and an encoder (93); A pull rope is wound around the meter wheel (91), one end of the pull rope is fixedly connected to the float (3), and the other end of the pull rope is arranged in the wire-reeling device (92). The encoder (93) is electrically connected to the controller (11).

7. A fertilization system according to claim 6, characterized in that The float (3) is a hollow metal ball suspended in the cylinder (12) and floating above the liquid level to be measured.

8. Implement a fertilization system as claimed in claim 1, characterized in that: The control steps include: Step S1: Set the total amount of fertilizing liquid M1, the total amount of fertilizer input F1, the mixing ratio of the single fertilizer input amount FT and water, the stirring liquid level height H2, and the stirring time, and then enter step S2; Step S2: Control the fertilizer to be fed into the cylinder (12) through the feeding port (10) according to the preset single fertilizer feeding amount FT, and then proceed to step S3; Step S3: Control the water injection pump to start, water is injected into the cylinder (12) through the water injection pipe (8) in accordance with a preset ratio, and proceeds to step S4; Step S4: The float level gauge measures the height of the liquid level and feeds the measured liquid level information back to the controller (11). The controller (11) compares the received liquid level height H1 with the preset stirring liquid level height H2. When H1 ≥ H2, the process proceeds to step S5, otherwise it returns to step S3. Step S5: Control the water injection pump to stop running, the first valve (1) is closed, the second valve (2) is opened, the stirring pump (6) is started, and when the preset stirring time is reached, step S6 is entered; Step S6: Control the stirring pump (6) to stop running, the third valve (13) to open, the fertilizer pump to open, and the liquid fertilizer is applied through the fertilizer pipe (4). The accumulated amount of fertilizer liquid M2 is calculated by the liquid level drop value ΔH, and the amount of fertilizer liquid M2 is compared with the total amount of fertilizer liquid M1. When M2 ≥ M1, step S8 is entered, otherwise step S7 is entered; Step S7: Control the fertilizer pump to stop running, close the third valve (13), open the first valve (1), start the sewage pump, and empty the liquid in the cylinder (12). When the float level gauge measures the liquid level H3 = 0, turn off the sewage pump and return to step S2; Step S8: Control the fertilizer pump to stop running, close the second valve (2), close the third valve (13), open the first valve (1), and start the sewage pump. When the float level gauge measures the liquid level H4=0, the fertilization is finished.

9. A fertilization system according to claim 8, characterized in that: In step S1, the total amount of fertilizer liquid M1 required is used to calculate the total amount of fertilizer input F1, and then the maximum amount of fertilizer input FD is calculated based on the volume of the cylinder (12) and the mixing ratio. The controller (11) can calculate the amount of fertilizer already input FY, and the remaining amount of fertilizer input FS = the total amount of fertilizer input F1 - the amount of fertilizer already input FY; If the remaining fertilizer amount FS ≤ the single maximum fertilizer amount FD, then the single fertilizer amount FT = the remaining fertilizer amount FS; Otherwise, the single fertilizer amount FT = the single maximum fertilizer amount FD.

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