A multi-channel proportioning device

Abstract

The utility model relates to a kind of multi-channel proportioning equipment, including equipment assembly and main pipe connecting unit;The equipment assembly includes control unit, execution unit, fertilizer pipe branch, diaphragm pump and flowmeter;Wherein, the control unit is installed in the top of execution unit;The diaphragm pump is provided with several, and it is all arranged in the side of execution unit;One the fertilizer pipe branch is connected with the water outlet of one the diaphragm pump;One the flowmeter is connected with one the fertilizer pipe branch, and the flowmeter is arranged in the middle of the fertilizer pipe branch;The main pipe connecting unit, including pipeline mechanism and medicine mixing mechanism connected with sprinkling irrigation main water pipe, wherein, the pipeline mechanism is arranged in the end of the fertilizer pipe branch away from diaphragm pump, and the medicine mixing mechanism is installed in the inside of the pipeline mechanism.The utility model effectively solves the pain points of the current commonly used fertilization mode, such as small fertilization flow, unadjustable or unstable adjustment of fertilization ratio and complex operation control.

Description

Technical Field

[0001] This invention relates to the field of agricultural technology, and in particular to a multi-channel mixing device. Background Technology

[0002] Agricultural irrigation mainly refers to irrigation operations carried out in agricultural cultivated areas. Agricultural irrigation methods can generally be divided into traditional surface irrigation, ordinary sprinkler irrigation, and micro-irrigation. With the modernization of agricultural production, sprinkler irrigation technology has been widely introduced into agricultural production and landscaping. In practical applications, soluble fertilizers or related drugs from fertilization techniques are usually added to the water used for sprinkler irrigation. Then, the sprinkler irrigation system sprays water while simultaneously spraying fertilizer or drugs onto the plants. How to control the mixing ratio of water and fertilizer is a problem that sprinkler irrigation systems urgently need to solve.

[0003] Traditional sprinkler irrigation systems typically employ the following two methods for fertilization:

[0004] 1. In the case of semi-automatic fertilization using a proportional fertilizer pump, although the water-fertilizer ratio is adjustable and relatively stable in practical applications, the fertilizer flow rate of the proportional fertilizer pump is small, which cannot meet the needs of large-area fertilization in a short period of time. At the same time, the quality requirements for the proportional pump are high, and subsequent maintenance is inconvenient.

[0005] Second, the Venturi fertilizer applicator is used for automatic fertilization. Although its structure is simple and its operating cost is low, its fertilizer application rate is greatly affected by pressure fluctuations and it is not easy to adjust it at a constant ratio.

[0006] Third, the EC / PH high-precision fertilizer applicator is adopted, which is more intuitive and convenient for automatic EC / PH control. However, the equipment cost is high and the accuracy and durability of the EC / PH probe are very important. Once the probe is not accurate, it will directly affect the actual EC / PH control.

[0007] To address this, a low-cost, high-precision multi-channel mixing device is proposed. Utility Model Content

[0008] Based on this, the purpose of the present invention is to overcome the defects or deficiencies of the prior art and provide a multi-channel mixing device.

[0009] A multi-channel proportioning device includes equipment components and a main pipe connection unit; the equipment components include a control unit, an execution unit, and a proportioning adjustment unit; the control unit is installed on the top of the execution unit; the proportioning adjustment unit is provided in several groups, each group of the proportioning adjustment unit includes a diaphragm pump, a fertilizer pipe branch, and a flow meter, wherein the diaphragm pump is located on one side of the execution unit, the fertilizer pipe branch is connected to the outlet of the diaphragm pump, and the flow meter is located in the middle of the fertilizer pipe branch;

[0010] The main pipe connection unit includes a pipeline mechanism and a mixing mechanism connected to the main irrigation pipe. The pipeline mechanism is located at the end of the fertilizer pipe branch away from the diaphragm pump, and the mixing mechanism is installed inside the pipeline mechanism.

[0011] Compared to existing technologies, the multi-channel mixing device of this invention detects the liquid flow rate data in the fertilizer pipe branch using a flow meter. The control unit then uses the execution unit to control the diaphragm pump based on the flow meter data, thereby controlling the ratio of fertilizer or pesticide to the main water pipe. This results in precise and stable output, convenient operation, and effectively solves the pain points of commonly used fertilization methods, such as low fertilizer flow rate, unadjustable or unstable fertilizer ratio, and complex operation control. Simultaneously, by connecting the pipeline mechanism to the main irrigation pipe, the flowing water in the pipeline mechanism drives the mixing mechanism, causing it to rotate within the pipeline. This rotating mixing mechanism pre-mixes the output fertilizer or pesticide, and then performs a secondary mixing of the pre-mixed fertilizer or pesticide with the water in the main water pipe. This improves the mixing effect of the water in the main water pipe with the fertilizer or pesticide, avoids uneven distribution of the pesticide, and ensures effective spraying.

[0012] In one embodiment, the device assembly further includes a human-machine interface panel, a flow meter, a check valve, a base, and an inlet valve; wherein, the human-machine interface panel is mounted on the center of the upper surface of the control unit, the flow meter is mounted on the front surface of the execution unit, and both the diaphragm pump and the execution unit are mounted on the upper surface of the base; a plurality of check valves are provided, the number of which is consistent with the number of fertilizer pipe branches, and one check valve is connected to one fertilizer pipe branch; a plurality of inlet valves are provided, the number of which is consistent with the number of diaphragm pumps, and one inlet valve is connected to the outlet of one diaphragm pump;

[0013] The flow meter detects the liquid flow rate data in the fertilizer pipe branch one by one, and feeds the detection results back to the control unit. Then, the control unit controls the output power of several diaphragm pumps according to the flow meter detection results and preset thresholds.

[0014] In one embodiment, the control unit controls the output power of several diaphragm pumps by outputting a PWM speed control signal.

[0015] In one embodiment, the piping structure includes a connecting pipe premixing box, a flange, and a protrusion; wherein the premixing box is connected to the top of the outer side wall of the connecting pipe, the flange is symmetrically fixedly connected to both ends of the connecting pipe, and the protrusion is located in the middle of the inner side wall of the connecting pipe.

[0016] In one embodiment, one end of the check valve is connected to an injection tube, and the end of the injection tube away from the check valve is connected to the top of the outer wall of the premixing tank.

[0017] In one embodiment, the mixing mechanism includes a central shaft, several baffles, stirring blades, and several stirring rods; wherein, the bottom of the central shaft is rotatably connected to the bottom of the inner wall of the connecting pipe via a bearing, the several baffles are fixedly connected to the bottom of the outer wall of the central shaft, the stirring blades are fixedly connected to the top of the central shaft, and the several stirring rods are fixedly connected to the top of the outer wall of the central shaft.

[0018] In one embodiment, a connecting frame is fixedly connected to the bottom of the inner sidewall of the premix box, and the inner sidewall of the connecting frame is rotatably connected to the outer sidewall of the central shaft through a bearing.

[0019] In one embodiment, the human-machine interface panel and the control unit communicate and transmit data via an Ethernet bus. The signal output terminal of the flow meter is connected to the signal input terminal of the flow meter via a signal line for pulse signal acquisition and transmission. The flow meter transmits the main flow electrical signal to the transmitter module and then transmits it to the communication module port of the control unit via a 485 bus. The control unit performs data analysis and conversion based on the main flow and the fertilizer flow of each channel, and then transmits the PWM speed control electrical signal to the speed control module in the execution unit via the 485 bus. The electrical output terminal of the execution unit is electrically connected to the electrical input terminal of the diaphragm pump via a wire to drive the diaphragm pump to operate at variable speed.

[0020] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a top view of the structure of this utility model;

[0022] Figure 2 This is a front view structural diagram of the present utility model;

[0023] Figure 3 This is a half-sectional structural diagram of the connecting pipe of this utility model;

[0024] Figure 4 This is a cross-sectional view of the connecting pipe of this utility model;

[0025] Figure 5 This is a cross-sectional view of the premix box of this utility model.

[0026] Reference numerals: 1. Equipment component; 101. Human-machine interface panel; 102. Control unit; 103. Flow meter; 104. Actuation unit; 105. Fertilizer pipe branch; 106. Diaphragm pump; 107. Flow meter; 108. Check valve; 109. Base; 110. Inlet valve; 2. Main pipe connection unit; 201. Piping mechanism; 202. Mixing mechanism; 211. Connecting pipe; 212. Premixing tank; 213. Flange; 214. Protrusion; 221. Central shaft; 222. Baffle plate; 223. Agitator blade; 224. Agitator rod; 41. Connecting frame; 42. Injection pipe. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings.

[0028] like Figure 1-5 As shown, this utility model embodiment provides a multi-channel proportioning device, including a device component 1 and a main pipe connection unit 2. The device component 1 includes a control unit 102, an execution unit 104, fertilizer pipe branches 105, diaphragm pumps 106, and flow meters 107. The control unit 102 is installed on the top of the execution unit 104. Several diaphragm pumps 106 are all located on one side of the execution unit 104. Several fertilizer pipe branches 105 are respectively connected to the outlets of several diaphragm pumps 106. Several flow meters 107 The main pipe connection unit 2 is connected to the middle of several fertilizer pipe branches 105 respectively. The main pipe connection unit 2 includes a pipeline mechanism 201 and a mixing mechanism 202 connected to the main irrigation water pipe. The pipeline mechanism 201 is located at the end of the fertilizer pipe branch 105 away from the diaphragm pump 106. The pipeline mechanism 201 is used to change the direction of water flow in the main irrigation water pipe to drive the mixing mechanism 202. The mixing mechanism 202 is installed inside the pipeline mechanism 201 and is used to stir the water flowing in the pipeline mechanism 201.

[0029] Furthermore, the equipment component 1 also includes a human-machine interface panel 101, a flow meter 103, several check valves 108, a base 109, and several inlet valves 110; wherein, the human-machine interface panel 101 is installed in the middle of the upper surface of the control unit 102, the flow meter 103 is installed on the front surface of the execution unit 104, several diaphragm pumps 106 and the execution unit 104 are both installed on the upper surface of the base 109, several check valves 108 are respectively connected to one end of several fertilizer pipe branches 105, and several inlet valves 110 are respectively connected to the inlet of several diaphragm pumps 106; the flow meter 107 detects the liquid flow data in the fertilizer pipe branch 105 and feeds the detection result back to the control unit 102, and then the control unit 102 controls the output power of the diaphragm pumps 106 according to the detection result of the flow meter 107 and the preset threshold.

[0030] Specifically, this application controls the output power of the diaphragm pump 106 by outputting a PWM speed control signal to the control unit 102.

[0031] Furthermore, the pipeline structure 201 includes a connecting pipe 211, a premixing tank 212, a flange 213, and a protrusion 214; wherein, the premixing tank 212 is connected to the top of the outer wall of the connecting pipe 211, the flange 213 is symmetrically fixedly connected to both ends of the connecting pipe 211, the protrusion 214 is located in the middle of the inner wall of the connecting pipe 211, one end of each of the several check valves 108 is connected to an injection pipe 42, and the end of the injection pipe 42 away from the check valve 108 is connected to the top of the outer wall of the premixing tank 212; the protrusion 214 changes the direction of water flow in the connecting pipe 211 so as to use the water flowing in the connecting pipe 211 to drive the baffle plate 222 to drive the central shaft 221 to rotate.

[0032] Furthermore, the mixing mechanism 202 includes a central shaft 221, several baffles 222, stirring blades 223, and several stirring rods 224. The bottom of the central shaft 221 is rotatably connected to the bottom of the inner wall of the connecting pipe 211 via bearings. Several baffles 222 are fixedly connected to the bottom of the outer wall of the central shaft 221. The stirring blades 223 are fixedly connected to the top of the central shaft 221. Several stirring rods 224 are fixedly connected to the top of the outer wall of the central shaft 221. A connecting frame 41 is fixedly connected to the bottom of the inner wall of the premixing box 212. The inner wall of the connecting frame 41 is rotatably connected to the outer wall of the central shaft 221 via bearings. The connecting frame 41 provides support for the outer wall of the central shaft 221 through bearings, ensuring the stability of the central shaft 221.

[0033] Furthermore, the signal output terminals of the human-machine interface panel 101 and the flow meter 107 are electrically connected to the signal input terminal of the control unit 102 via wires. The signal output terminal of the control unit 102 is electrically connected to the signal input terminal of the human-machine interface panel 101 and the flow meter 103 via wires. The electrical output terminal of the control unit 102 is electrically connected to the electrical input terminal of the execution unit 104 via wires. The electrical output terminal of the execution unit 104 is electrically connected to the electrical input terminal of the diaphragm pump 106 via wires. The control unit 102 receives signals from the human-machine interface panel 101 and the flow meter 107, and the execution unit 104 controls the opening and closing of the diaphragm pump 106.

[0034] Specifically, the control unit 102 is a control box equipped with a microcontroller or PLC controller; the execution unit 104 is an electrical control box equipped with relays and frequency converters; the human-machine interface panel 101 is a touch screen, through which users can directly set the total target ratio and mother liquor configuration ratio of each channel, inject water, and start / stop operations. The human-machine interface panel 101 is also equipped with a mode selection button, and there are four modes that can be set: automatic mode, manual mode, system setting, and zoned irrigation mode; the automatic adjustment mode changes the power of the corresponding diaphragm pump 106 according to the flow data detected by the flow meter 107, thereby ensuring that the water in the main water pipe and fertilizer or pesticide are maintained at a preset ratio; the automatic adjustment mode directly sets the power of the diaphragm pump 106, so that the diaphragm pump 106 operates at a constant power.

[0035] Specifically, the flow rate of branch line 105 is 2-8 m³ / s. 3 / h.

[0036] In operation, this invention works as follows: The inlet valve 110 is connected to a storage tank containing the fertilizer or pesticide needed for spraying. The connecting pipe 211 is connected to the main water pipe via flange 213. Then, the threshold value of the flow meter 107 is entered into the control unit 102 based on the irrigation time, coverage area, and dosage via the human-machine interface panel 101. The control unit 102 then uses the execution unit 104 to start the diaphragm pump 106. The pump draws out the fertilizer or pesticide through the inlet valve 110 and delivers it through the fertilizer pipe branch 105. The flow meter 107 detects the liquid flow rate data in the fertilizer pipe branch 105 and feeds the result back to the control unit 102. The control unit 102 then controls the output power of the diaphragm pump 106 based on the flow meter 107's detection result and the preset threshold. When the flow meter 107's detection result reaches the threshold, the control unit 102 uses the execution unit 104 to control the diaphragm pump 106. The membrane pump 106 operates continuously at its current power. The diaphragm pump 106 stabilizes its power output at the target ratio within approximately 15 seconds. Then, through the check valve 108 and injection pipe 42, fertilizer or pesticide is injected into the premixing tank 212. The protrusion 214 changes the direction of water flow in the connecting pipe 211, causing the water flowing in the connecting pipe 211 to push the baffle plate 222, which in turn rotates the central shaft 221. The rotating central shaft 221 then rotates the stirring rod 224 and stirring blade 223. The rotating stirring rod 224 and stirring blade 223 stir the fertilizer or pesticide entering the premixing tank 212, premixing it. The premixed solution is then discharged from the premixing tank 212 into the connecting pipe 211. The rotating baffle plate 222 then performs a secondary mixing of the solution and water, improving the mixing effect of water and fertilizer or pesticide in the main water pipe, preventing uneven distribution of the pesticide, and ensuring the spraying effect.

[0037] Compared to existing technologies, this invention uses a flow meter to detect the liquid flow rate in the fertilizer pipe branch. The control unit then uses the execution unit to control the diaphragm pump based on the flow meter data, thereby controlling the ratio of fertilizer or pesticide to the main water pipe. This results in precise and stable output, convenient operation, and effectively solves the problems of low fertilizer flow, unadjustable or unstable fertilizer ratios, and complex operation in commonly used fertilization methods. Simultaneously, by connecting the pipeline mechanism to the main irrigation pipe, the flowing water within the pipeline mechanism drives the mixing mechanism, causing it to rotate within the pipeline. This rotating mechanism pre-mixes the output fertilizer or pesticide, and then performs a secondary mixing of the pre-mixed fertilizer or pesticide with the water in the main water pipe. This improves the mixing effect of the water and fertilizer or pesticide in the main water pipe, preventing uneven distribution of the pesticide and ensuring effective spraying.

[0038] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments and claims of this application are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that, unless otherwise stated, “a plurality” means two or more; the terms “first,” “second,” “third,” etc., are used only to distinguish and not to describe a particular order or sequence, nor should they be construed as indicating or implying relative importance. The term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items. When the above description relates to drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. In the description of this application, those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A multi-channel proportioning device, characterized in that: Includes equipment components and main control connection unit; The equipment components include a control unit, an execution unit, and a proportioning adjustment unit; the control unit is installed on the top of the execution unit; the proportioning adjustment unit is provided in several groups, and each group of the proportioning adjustment unit includes a diaphragm pump, a fertilizer pipe branch, and a flow meter, wherein the diaphragm pump is located on one side of the execution unit, the fertilizer pipe branch is connected to the outlet of the diaphragm pump, and the flow meter is located in the middle of the fertilizer pipe branch; The main pipe connection unit includes a pipeline mechanism and a mixing mechanism connected to the main irrigation pipe. The pipeline mechanism is located at the end of the fertilizer pipe branch away from the diaphragm pump, and the mixing mechanism is installed inside the pipeline mechanism.

2. The multi-channel proportioning device according to claim 1, characterized in that: The equipment components also include a human-machine interface panel, a flow meter, a check valve, a base, and an inlet valve; wherein, the human-machine interface panel is mounted on the center of the upper surface of the control unit, the flow meter is mounted on the front surface of the execution unit, and both the diaphragm pump and the execution unit are mounted on the upper surface of the base; a plurality of check valves are provided, the number of which is consistent with the number of fertilizer pipe branches, and one check valve is connected to one fertilizer pipe branch; a plurality of inlet valves are provided, the number of which is consistent with the number of diaphragm pumps, and one inlet valve is connected to the outlet of one diaphragm pump; The flow meter detects the liquid flow rate data in the fertilizer pipe branch one by one, and feeds the detection results back to the control unit. Then, the control unit controls the output power of several diaphragm pumps according to the flow meter detection results and preset thresholds.

3. The multi-channel proportioning device according to claim 2, characterized in that: The control unit is used to output a PWM speed regulation signal to control the output power of several of the diaphragm pumps.

4. The multi-channel proportioning device according to claim 3, characterized in that: The pipeline structure includes a connecting pipe, a premixing tank, a flange, and a protrusion; wherein the premixing tank is connected to the top of the outer side wall of the connecting pipe, the flange is symmetrically fixed to both ends of the connecting pipe, and the protrusion is located in the middle of the inner side wall of the connecting pipe.

5. The multi-channel proportioning device according to claim 4, characterized in that: One end of the check valve is connected to a drug injection pipe, and the end of the drug injection pipe away from the check valve is connected to the top of the outer wall of the premixing tank.

6. The multi-channel proportioning device according to claim 5, characterized in that: The mixing mechanism includes a central shaft, several baffles, stirring blades, and several stirring rods; wherein, the bottom of the central shaft is rotatably connected to the bottom of the inner wall of the connecting pipe via a bearing, several baffles are fixedly connected to the bottom of the outer wall of the central shaft, the stirring blades are fixedly connected to the top of the central shaft, and several stirring rods are fixedly connected to the top of the outer wall of the central shaft.

7. The multi-channel proportioning device according to claim 6, characterized in that: A connecting frame is fixedly connected to the bottom of the inner wall of the premix box, and the inner wall of the connecting frame is rotatably connected to the outer wall of the central shaft through a bearing.

8. The multi-channel proportioning device according to claim 7, characterized in that: The human-machine interface panel and the control unit communicate and transmit data via an Ethernet bus. The signal output terminal of the flow meter is connected to the signal input terminal of the flow meter via a signal line for pulse signal acquisition and transmission. The flow meter transmits the main flow electrical signal to the transmitter module and then to the communication module port of the control unit via a 485 bus. The control unit is used to perform data analysis and conversion based on the main flow and the fertilizer flow of each channel, and then transmits the PWM speed control electrical signal to the speed control module in the execution unit via a 485 bus. The electrical output terminal of the execution unit is electrically connected to the electrical input terminal of the diaphragm pump via a wire to drive the diaphragm pump to operate at variable speed.

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