WiFi remote control agricultural irrigation vertical spiral wing metering valve

Abstract

The invention discloses a WiFi remote control agricultural irrigation vertical spiral wing metering valve which comprises an electronic counter (meter head) used for receiving external signals and recording real-time water flow data; a water inlet and a water outlet are formed in the outer portion of the valve body, the valve body is detachably connected with the electronic counter (meter head) through a bolt, and a valve element assembly is installed in the valve body and used for controlling water flow and transmitting water flow data; the valve cover device is connected with the valve body and is used for sealing the valve body; the electromagnetic valve and the pressure reducing valve are installed on the two sides of the valve body respectively, the electromagnetic valve is used for controlling opening and closing of the whole metering valve, and the pressure reducing valve is used for adjusting inlet and outlet water pressure of the metering valve. The agricultural irrigation vertical spiral wing metering valve based on the wifi remote control mode is provided for a large-scale farmland irrigation application scene, and a water-saving and efficiency-improving agricultural irrigation management mode such as accurate metering, remote control and digital statistics is achieved.

Description

Technical Field

[0001] The invention relates to the field of agricultural irrigation metering valves, and in particular to an agricultural irrigation vertical propeller metering valve controlled by WiFi remote control. Background Art

[0002] At present, metering valves in the domestic market are mainly made using electromagnetic, ultrasonic, differential pressure and other principles, and mature products are used in different fields. For example, the current agricultural irrigation metering valves are mainly: 1. Ultrasonic metering valves, which are compact in structure, flexible and convenient to install, have low design costs, and are easy to realize digital detection. 2. Differential pressure metering valves rely on differential pressure and pressure sensors for detection. They have simple structures, low working conditions, and are not sensitive to agricultural water quality. 3. Electromagnetic metering valves have no mechanical parts, and the probability of mechanical failure is low. There are no devices that hinder the flow of fluid inside the metering valve. They have a wide measurement range, high reliability, easy installation, and low maintenance costs. 4. Traditional velocity-type mechanical water meters have stable measurement, low prices, low production and maintenance costs, are easy to popularize and promote, and have high durability. They are widely used in small-diameter pipe networks. 5. Ordinary volumetric mechanical water meters use a rotating piston mechanism. Under normal conditions, they have higher accuracy and larger range than velocity-type water meters.

[0003] However, since the cost of various types of flow meters is generally very high and they have high requirements for the measured medium, operation and adjustment, etc., it is not conducive to the promotion and application in the field of agricultural irrigation. For example: 1. Ultrasonic metering valves need to install sensors and receivers on the pipeline. The measurement results are easily affected by bubbles, scale and water temperature changes, and the water flow quality is required to be high. 2. Differential pressure metering valves. The measurement accuracy of differential pressure water meters is easily affected by installation and fluid impact, and the measurement range is generally narrow. The installation conditions are relatively strict. Inaccurate installation will have a greater impact on the measurement accuracy. 3. Electromagnetic metering valves are subject to strong magnetic interference during use, resulting in measurement errors. There are certain requirements for installation at a certain height. The current minimum installation height is ≥45cm. 4. Traditional speed-type mechanical water meters have a relatively complex mechanical structure, are prone to clogging, and have measurement errors, especially for rotor structure water meters. When the water flow rate is lower than the minimum measurement value, the measurement value is zero, and the mechanical meter head is difficult to digitize. 5. Ordinary volumetric mechanical water meters are sensitive to water quality. When the water quality deteriorates, they are prone to blockage and damage. In addition, when parameters such as water temperature and pressure change, accuracy cannot be guaranteed. Remote control and multi-valve networking are difficult.

[0004] Therefore, agricultural irrigation uses ordinary mechanical impeller water meters. Ordinary mechanical impeller water meters have simple structures, mature technologies, and stable operation, but this type of water meter has large measurement errors, especially when the outlet pressure is greater than the inlet pressure, it is easy to produce backflow phenomena that affect the measurement accuracy, and ordinary mechanical water meters themselves cannot be remotely controlled, which is not conducive to agricultural water data collection and information management. According to statistics in 2023, the national agricultural water use is 367.24 billion m3, accounting for 62.18% of the total water use in the whole society. In the face of severe domestic water shortage, remote digital water management measures are promoted, agricultural water-saving actions are carried out, and agricultural water-saving efficiency and benefits are improved. Therefore, it is of practical significance to design a metering valve that integrates precise measurement, remote control, digital statistics and other water-saving and efficiency-enhancing agricultural irrigation management modes. Summary of the invention

[0005] The present invention is made to solve the above-mentioned problem, and aims to provide a WiFi remote-controlled agricultural irrigation vertical propeller metering valve.

[0006] The present invention provides a WiFi remote-controlled agricultural irrigation vertical propeller metering valve, which has the following characteristics: an electronic counter (meter head) for receiving external signals and recording real-time water flow data; a valve body, which is provided with a water inlet and a water outlet on the outside, and the valve body and the electronic counter (meter head) are detachably connected by bolts, and a valve core assembly is installed inside for controlling water flow and transmitting water flow data; a valve cover device is connected to the valve body and used to seal the valve body; a solenoid valve and a pressure reducing valve are respectively installed on both sides of the valve body, the solenoid valve is used to control the opening and closing of the entire metering valve, and the pressure reducing valve is used to adjust the inlet and outlet water pressure of the metering valve. Among them, the valve core assembly includes a magnetic transmission unit, an opening and closing unit, a rectifier unit and a propeller unit. The magnetic transmission unit is connected to the electronic counter (meter head) and the propeller unit, and the propeller unit is connected to the valve cover device, the opening and closing element and the rectifier unit. The propeller unit generates water flow data by rotating, and the magnetic transmission unit transmits the water flow data to the electronic counter (meter head).

[0007] In the WiFi remote-controlled agricultural irrigation vertical propeller metering valve provided by the present invention, the following features may also be provided: wherein the rectifier unit includes an upper rectifier and a lower rectifier. The lower rectifier adopts a barrel-type structural design and is installed in the inner threaded hole of the valve body. A fixed sealing ring is installed on the top and fixed by screws. A radial mesh is opened on the bottom, and a shaft tip is installed in the center of the bottom. The shaft tip is connected to the propeller unit to realize radial positioning of the propeller unit. The upper rectifier is composed of six vertical blades and is installed below the opening and closing unit to rectify the water flow passing through the propeller unit to form a stable water head.

[0008] In the WiFi remote-controlled agricultural irrigation vertical propeller metering valve provided by the present invention, the following features may also be provided: wherein the propeller impeller unit comprises a propeller impeller and a transmission shaft, and the propeller impeller and the transmission shaft are connected by interference fit. An axial hole is provided at one end of the transmission shaft connected to the propeller impeller, and a shaft tip sleeve is installed in the axial hole to match the shaft tip of the lower rectifier, and the other end of the transmission shaft is a shaft tip, which matches the shaft tip sleeve of the valve cover device.

[0009] In the WiFi remote-controlled agricultural irrigation vertical propeller metering valve provided by the present invention, the following features may also be provided: wherein the magnetic transmission unit comprises an upper magnetic wheel and a lower magnetic wheel. The upper magnetic wheel is connected to an electronic counter (meter head), and the lower magnetic wheel is connected to the shaft end of a transmission shaft, and is used to transmit the rotational motion of the propeller impeller. The upper and lower magnetic wheels realize non-contact transmission by utilizing the magnetic interaction principle of magnetic materials.

[0010] In the WiFi remote-controlled agricultural irrigation vertical propeller metering valve provided by the present invention, the following features may also be provided: wherein, the opening and closing unit comprises an opening and closing element, a diaphragm, a sealing guide sleeve, a reset spring and a fixed disk, the diaphragm and the opening and closing element are connected together through the fixed disk, when the diaphragm is deformed, it overcomes the reset spring and drives the opening and closing element to move up and down to meet the valve opening and closing and working pressure adjustment requirements. The bottom center of the opening and closing element is a circular hole structure, the transmission shaft in the propeller unit and the circular hole are closely matched, a sealing guide sleeve is installed in the circular hole, the reset spring is placed above the fixed disk and deforms with the movement of the opening and closing element, and the transmission shaft passes through the center of the fixed disk and the reset spring to drive the magnetic transmission unit to rotate.

[0011] In the WiFi remote-controlled agricultural irrigation vertical propeller metering valve provided by the present invention, the following features may also be provided: wherein the valve cover device includes a valve cover, a flange end cover and a shuttle valve. The valve cover and the diaphragm form a sealed cavity, and a shuttle valve is installed on the valve cover. One end of the shuttle valve is connected to the sealed cavity, and the other two ends are respectively connected to the solenoid valve and the pressure reducing valve, which are used to connect the water flow of the solenoid valve or the pressure reducing valve to the sealed cavity of the metering valve, thereby controlling the water flow rate. A shaft tip sleeve is installed at the bottom center of the flange end cover, which cooperates with the shaft tip of the transmission shaft to position the transmission shaft. In addition, the valve cover plays a role in positioning and fastening the diaphragm, the return spring, the propeller impeller and the transmission shaft, and the flange end cover fastens the valve cover and the valve core assembly.

[0012] In the WiFi remote-controlled agricultural irrigation vertical propeller metering valve provided by the present invention, the following features may also be provided: wherein, the solenoid valve is provided with three interfaces, which are respectively connected to the three-way connection on the filter at the water inlet of the metering valve, the shuttle valve on the valve cover and the pressure relief pipeline, the solenoid valve is automatically closed when the power is off and opened when the power is on, and in addition, the solenoid valve is provided with a manual operating device for manually opening and closing the metering valve. There are four interfaces on the pressure reducing valve, which are respectively connected to the three-way connection on the filter at the water inlet of the metering valve, the filter at the water outlet, the shuttle valve on the valve cover and the pressure relief pipeline, and a pressure regulating bolt is provided on the top of the pressure reducing valve for adjusting the working pressure of the pressure reducing valve.

[0013] In the WiFi remote-controlled agricultural irrigation vertical propeller metering valve provided by the present invention, the following features may also be provided: wherein the valve body has two design structures, spherical and right-angle, which are respectively suitable for two layout forms of horizontal or vertical distribution of pipelines. The water inlet and outlet of the valve body are both processed with three-inch internal threads for easy connection with external pipelines. There are bolt holes and sealing annular grooves on the top of the valve body for fixing the diaphragm, valve cover and flange end cover. In addition, the valve body has three threaded holes, two of which are respectively installed with filters at the water inlet and outlet, which are respectively connected to the solenoid valve and the pressure reducing valve. The threaded hole near the bottom of the valve body is installed with a plug, which is used for cleaning through the threaded hole when the valve body channel is blocked.

[0014] In the WiFi remote-controlled agricultural irrigation vertical propeller metering valve provided by the present invention, it can also have such a feature: wherein, the core of the electronic counter (header) is composed of three layers of circuit boards, the first layer is equipped with a digital encoder, the second layer of circuit boards is equipped with an STM32 module, a WiFi module, and a flash memory, and the third layer of circuit boards is equipped with a relay, and the working process is: step A, the rotating shaft end of the digital encoder is connected to the upper magnetic wheel, and the rotational motion transmitted by the lower magnetic wheel is converted into a digital pulse signal for the STM32 module to process; step B, the STM32 module accumulates the processed data to the flash memory for storage, and the storage data in the flash memory is displayed on the OLED screen through the STM32 module IIC interface on the one hand, and is transmitted to the mobile phone terminal in real time through the WiFi module on the other hand, and in addition, the STM32 module receives the opening and closing instructions issued by the mobile phone terminal through the WiFi module to realize remote control. In addition, the relay is used to control the power on and off of the electromagnetic valve, the OLED screen is used to display the water use data of the metering valve, and the flash memory is used to store the water use data of the metering valve, and the data is not lost in the case of long-term power failure, and the three-layer circuit board is encapsulated in a transparent meter box, and the transparent meter box is installed in the table cover.

[0015] The WiFi remote-controlled agricultural irrigation vertical propeller metering valve provided by the present invention may also have such a feature, further comprising: a battery box for supplying power to the electrical devices inside the entire metering valve. The battery box is connected to the valve body through a hanging ear, a socket is installed on the outside of the battery box, and a detachable lithium battery pack is built in, and the lithium battery pack supplies power to various components in the entire metering valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 : is a schematic diagram of the structure of a WiFi remote-controlled agricultural irrigation vertical propeller metering valve in an embodiment of the present invention, wherein: Figure 1 (a) is a spherical design structure valve body, Figure 1 (b) The valve body is designed with a right angle structure;

[0017] Figure 2 is a structural schematic diagram of a valve core assembly in an embodiment of the present invention;

[0018] Figure 3 is a structural schematic diagram of a rectifier unit in an embodiment of the present invention;

[0019] Figure 4 is a schematic structural diagram of a spiral wing impeller unit in an embodiment of the present invention;

[0020] Figure 5 is a structural schematic diagram of a magnetic transmission unit in an embodiment of the present invention;

[0021] Figure 6 is a schematic structural diagram of an opening and closing unit in an embodiment of the present invention;

[0022] Figure 7 is a schematic structural diagram of a valve cover device in an embodiment of the present invention;

[0023] Figure 8 is a schematic structural diagram of a solenoid valve in an embodiment of the present invention;

[0024] Fig. 9 is a schematic structural diagram of a pressure reducing valve in an embodiment of the present invention;

[0025] Fig.10 is a schematic diagram of the structure of the valve body in an embodiment of the present invention, wherein: Fig.10 (a) is a spherical design structure valve body, Fig.10 (b) The valve body is designed with a right angle structure;

[0026] Fig.11 is a schematic diagram of the structure of an external battery box in an embodiment of the present invention;

[0027] Fig.12 It is a schematic diagram of the structure of an electronic counter (meter head) in an embodiment of the present invention;

[0028] Fig.13 It is a schematic diagram of the circuit connections of each module of the electronic counter (meter head) in the embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the following embodiments and the accompanying drawings specifically illustrate the WiFi remote-controlled agricultural irrigation vertical propeller metering valve of the present invention.

[0030] This embodiment provides a WiFi remote-controlled agricultural irrigation vertical propeller metering valve 100 to solve the problems existing in agricultural irrigation. The metering valve has two design structures: ball type and right angle type, and the overall size of the structure is ≤260×300×300mm 3 This embodiment provides an agricultural irrigation vertical propeller metering valve based on a wifi remote control mode for large-scale farmland irrigation application scenarios, realizing an agricultural irrigation management mode that saves water and increases efficiency, such as accurate metering, remote control, and digital statistics.

[0031] Figure 1 : is a schematic diagram of the structure of a WiFi remote-controlled agricultural irrigation vertical propeller metering valve in an embodiment of the present invention, wherein: Figure 1 (a) is a spherical design structure valve body, Figure 1 (b) is a right-angle design structure valve body. The channels in the two valve bodies conform to the design principles of fluid mechanics, with small water flow resistance and less loss.

[0032] like Figure 1 As shown, the WiFi remote-controlled agricultural irrigation vertical propeller metering valve 100 in this embodiment includes a frame electronic counter (meter head) 1, a valve body 2, a valve cover device 3, a solenoid valve 4, a pressure reducing valve 5 and a battery box 6.

[0033] The valve body 2 is provided with a water inlet 21 and a water outlet 22 on the outside. The valve body 2 is detachably connected to the electronic counter (meter head) 1 by bolts, and includes a valve core assembly 23 inside for controlling water flow and transmitting water flow data.

[0034] Figure 2 Schematic diagram of the structure of the valve core assembly in an embodiment of the present invention.

[0035] like Figure 2 As shown, the valve core assembly 23 includes a magnetic transmission unit 231 , an opening and closing unit 232 , a rectifying unit 233 and a helical impeller unit 234 .

[0036] Figure 3 Schematic diagram of the structure of the rectifier unit in the embodiment of the present invention.

[0037] like Figure 2 , Figure 3As shown, the rectifying unit 233 includes an upper rectifier 2331 and a lower rectifier 2332. It is used for water inlet rectification and water outlet rectification, and rectifying the turbulent water flow into a laminar flow state.

[0038] The lower rectifier 2332 adopts a barrel-type structural design to sort out the water flow flowing into the screw-wing impeller. It is installed in the inner threaded hole of the valve body 2. A fixed sealing ring 2334 is installed on the top to prevent cavitation and is fixed by screws. A radial mesh is opened on the bottom, and an 8 mm long stainless steel shaft tip 2335 is installed in the center of the bottom. The shaft tip 2335 is connected to the screw-wing impeller unit 234 to achieve radial positioning of the screw-wing impeller unit 234.

[0039] The upper rectifier 2331 is composed of six vertical blades and is installed below the opening and closing unit 232 to rectify the water flow passing through the propeller unit 234 to form a stable water head.

[0040] Figure 4 Schematic diagram of the structure of the spiral impeller unit in the embodiment of the present invention.

[0041] like Figure 2 , Figure 4 As shown, the helical impeller unit 234 includes a helical impeller 2341 and a transmission shaft 2342, which is used to convert the water flow movement into the transmission shaft optional movement, and transmit the movement through the magnetic transmission device. The helical impeller 2341 and the transmission shaft 2342 are connected by an interference fit.

[0042] The helical impeller 2341 has eight helical blades in total, and rotates in the lower fairing when working. A stainless steel transmission shaft 2342 is installed in the helical impeller 2341.

[0043] One end of the transmission shaft 2342 connected to the helical impeller 2341 is provided with an axial hole, in which a shaft tip sleeve 2343 is installed to cooperate with the shaft tip 2335 of the lower rectifier. The other end of the transmission shaft 2342 is a shaft tip 2344, which passes through the center of the lower magnetic wheel and cooperates with the shaft tip sleeve 33 of the valve cover device.

[0044] Figure 5 It is a structural schematic diagram of a magnetic transmission unit in an embodiment of the present invention.

[0045] like Figure 2 , Figure 5 As shown, the magnetic transmission unit 231 includes an upper magnetic wheel 2311 and a lower magnetic wheel 2312 .

[0046] The upper magnetic wheel 2311 is fixed on the encoder of the electronic counter (meter head) 1, driving the encoder shaft to rotate.

[0047] The lower magnetic wheel 2312 is fixed to the shaft end of the transmission shaft 2342 and rotates with the helical impeller 2341 to transmit the rotational motion of the helical impeller 2341, thereby realizing the transmission of the torque of the helical impeller 2341. The upper and lower magnetic wheels realize non-contact transmission by utilizing the magnetic interaction principle of magnetic materials.

[0048] Figure 6 Schematic diagram of the structure of the opening and closing unit in the embodiment of the present invention.

[0049] like Figure 2 , Figure 6 As shown, the opening and closing unit 232 includes an opening and closing element 2321, a high-strength flexible rubber diaphragm 2322, a sealing guide sleeve 2323, a return spring 2324 and a fixed plate 2325, which can move up and down and form a closed cavity with the lower side of the valve cover.

[0050] A sealing guide sleeve 2323 is installed in the center of the opening and closing element 2321, which can ensure that the transmission shaft 2323 can rotate flexibly and ensure that water cannot leak from the shaft hole to the top of the diaphragm.

[0051] The high-strength flexible rubber diaphragm 2322 is connected to the opening and closing element 2321 through a fixed plate 2325. When the high-strength flexible rubber diaphragm 2322 is deformed, it overcomes the return spring 2324 and drives the opening and closing element 2321 to move up and down to meet the valve opening and closing and working pressure adjustment requirements.

[0052] The bottom center of the opening and closing element 232 is a circular hole structure. The transmission shaft 2342 in the helical impeller device is in close fit with the circular hole. A sealing guide sleeve 2323 is installed in the circular hole. The reset spring 2324 is placed above the fixed disk 2325 and deforms with the movement of the opening and closing element 2321. The transmission shaft 2342 passes through the center of the fixed disk 2325 and the reset spring 2324 to drive the magnetic transmission unit 231 to rotate.

[0053] Figure 7 Schematic diagram of the structure of the valve cover device in an embodiment of the present invention.

[0054] The valve cover device 3 is connected to the valve body 2 and is used to seal the valve body 2. Figure 2 , Figure 7 As shown, the valve cover device 3 includes a valve cover 31 , a flange end cover 32 and a shuttle valve 33 .

[0055] The valve cover 31 positions and fastens the diaphragm 2322, the return spring 2324, the screw impeller 2341, and the transmission shaft 2342, ensuring that the valve works smoothly and accurately. The valve cover 31 and the flange end cover 32 can be used in combination to seal the internal structure of the entire metering valve.

[0056] The valve cover 31 and the high-strength flexible rubber diaphragm 2322 form a sealed cavity, and a shuttle valve 33 is installed on the valve cover 31. One end of the shuttle valve 33 is connected to the sealed cavity, and the other two ends are respectively connected to the solenoid valve 4 and the pressure reducing valve 5, which are used to connect the water flow of the solenoid valve 4 or the pressure reducing valve 5 to the sealed cavity of the metering valve, thereby controlling the water flow. The filter is connected to the water inlet, and the water flows into the solenoid valve 4 through the filter.

[0057] A shaft tip sleeve 33 is installed at the bottom center of the flange end cover 32 to facilitate the magnetic force lines to penetrate the flange end cover 32 and cooperate with the shaft tip of the transmission shaft 2342, thereby positioning the transmission shaft 2342. In addition, the valve cover 31 positions and fastens the high-strength flexible rubber diaphragm 2322, the return spring 2324, the screw impeller 2341 and the transmission shaft 2342, and the flange end cover 32 fastens the valve cover 31 and the valve core assembly 23.

[0058] like Figure 1 As shown, the solenoid valve 4 and the pressure reducing valve 5 are respectively installed on both sides of the valve body 2, the solenoid valve 4 is used to control the opening and closing of the entire metering valve, and the pressure reducing valve 5 is used to adjust the inlet and outlet water pressure of the metering valve.

[0059] Figure 8 Schematic diagram of the structure of the solenoid valve in the embodiment of the present invention.

[0060] like Figure 1 , Figure 8 As shown, the solenoid valve 4 is equipped with three interfaces, which are respectively connected to the three-way filter on the water inlet 21 of the metering valve, the shuttle valve 33 on the valve cover 31, and the pressure relief pipeline (the pressure relief pipeline is connected to the atmosphere). The solenoid valve is automatically closed when the power is off and opened when the power is on. The specific working process is:

[0061] When the electromagnetic valve 4 is powered off, the water flow of the water inlet 21 passes through the electromagnetic valve core, the shuttle valve 33, and enters the sealed cavity formed by the valve cover 31 and the diaphragm 2322. Under the dual action of the water pressure of the water inlet and the elastic force of the return spring 2324, the diaphragm 2322 is deformed, the opening and closing unit 232 moves down, and the metering valve is closed. When the electromagnetic coil 42 is powered on, the water flow of the water inlet 21 is cut off, and the sealed cavity formed by the valve cover 31 and the diaphragm 2322 is connected to the pressure relief pipe. Under the action of the water inlet pressure, the opening and closing unit 232 overcomes the spring pressure and moves up to open the metering valve. In addition, the electromagnetic valve 4 is equipped with a manual operating device 41 for manually opening and closing the metering valve.

[0062] Fig. 9 Schematic diagram of the structure of the pressure reducing valve in the embodiment of the present invention.

[0063] like Figure 1 , Fig. 9As shown, there are four interfaces on the pressure reducing valve 5, which are respectively connected to the three-way of the filter at the water inlet 21 of the metering valve, the filter at the water outlet 22, the shuttle valve 33 on the valve cover 31 and the pressure relief pipeline, and a pressure regulating bolt 51 is installed on the top of the pressure reducing valve 5 to adjust the working pressure of the pressure reducing valve. The specific working process is:

[0064] When the outlet pressure is lower than the inlet pressure, and the inlet and outlet pressure difference is greater than the pressure set by the pressure regulating bolt 51, the channel leading to the shuttle valve 33 of the pressure reducing valve 5 is closed, and the water in the metering valve flows normally; when the outlet pressure is higher than the inlet pressure, the channel leading to the shuttle valve 33 of the pressure reducing valve 5 is gradually opened, and the high-pressure water flow at the outlet enters the sealing cavity formed by the valve cover 31 and the diaphragm 2322, the diaphragm 2322 is deformed, the opening and closing unit 232 moves downward, the flow cross-section in the metering valve is reduced until it is closed, and the high-pressure water flow at the outlet is relieved through the pressure relief pipe, the pressure is reduced to the set value, and the opening and closing unit 232 opens the metering valve again to work normally.

[0065] Fig.10 is a schematic diagram of the structure of the valve body in an embodiment of the present invention, wherein: Fig.10 (a) is a spherical design structure valve body, Fig.10 (b) is a right-angle design structure valve body.

[0066] like Fig.10 As shown, the valve body 2 has two design structures, spherical and right-angle, which are respectively suitable for horizontal or vertical distribution of pipelines. The water inlet 21 and the water outlet 22 of the valve body 2 are both processed with three-inch internal threads for easy connection with external pipelines.

[0067] There are bolt holes and sealing annular grooves on the top of the valve body 2, which are used to fix the high-strength flexible rubber diaphragm 2322, the valve cover 31 and the flange end cover 32. In addition, the valve body 2 has three threaded holes, two of which are respectively installed with filters at the inlet and outlet, respectively connected with the solenoid valve 4 and the pressure reducing valve 5, and the threaded hole near the bottom of the valve body 2 is installed with a plug, which is used to clean the valve body channel when it is blocked.

[0068] Fig.11 It is a schematic diagram of the structure of an external battery box in an embodiment of the present invention.

[0069] like Figure 1 and Fig.11 As shown, the battery box 6 is used to power the electrical devices inside the entire metering valve. The battery box 6 is connected to the outside of the valve body through the hanging ear 61. A socket 61 is installed on the outside of the battery box. A detachable lithium battery pack 63 and a transformer 64 are built in. The lithium battery 63 group outputs two types of direct current, 24V and 3.3V, through the transformer 64 to power the various modules in the solenoid valve 4 and the electronic counter (header) 1. When the power of the lithium battery pack 63 is reduced, the metering valve is automatically closed, and the battery pack can be taken out for external charging.

[0070] Fig.12 It is a schematic diagram of the structure of an electronic counter (meter head) in an embodiment of the present invention.

[0071] Fig.13 It is a schematic diagram of the circuit connections of each module of the electronic counter (meter head) in the embodiment of the present invention.

[0072] like Figure 1 , Fig.12 , Fig.13 As shown, the electronic counter (meter head) 1 is used to control the opening and closing of the solenoid valve 4, thereby controlling the entry and discharge of the pressure water flow in the upper chamber of the diaphragm 2322, so that the diaphragm 2322 overcomes the deformation of the return spring 2324, thereby realizing the switching of the opening and closing state of the valve opening and closing unit 232, and then realizing the functions of conversion, recording, storage, data transmission and remote control.

[0073] The core of the electronic counter (meter head) 1 is composed of a three-layer circuit board 11, the first layer is equipped with a digital encoder 12; the second layer of the circuit board is equipped with an STM32 module 13, a WiFi module 14, and a flash memory 15; the third layer of the circuit board is equipped with a relay 16. It is used to convert the number of revolutions of the propeller driven by the magnetic transmission unit into a flow value, which can be displayed on an OLED display screen and the flow information can be transmitted to a mobile phone through a WiFi module.

[0074] The working process of the electronic counter (meter head) 1 in this embodiment is as follows:

[0075] Step A: The end of the rotating shaft of the digital encoder 12 is connected to the upper magnetic wheel 2311 , and the analog quantity of the rotating motion transmitted by the lower magnetic wheel 2312 is converted into a digital pulse signal for processing by the STM32 module 13 .

[0076] Step B, STM32 module 13 accumulates processed data to storage in flash memory 15, and the storage data in flash memory 13 is displayed on OLED screen 17 by the IIC interface of STM32 module 13 on the one hand, and is transmitted to mobile phone terminal in real time by WiFi module on the other hand. In addition, STM32 module 13 accepts the opening and closing instructions issued by mobile phone terminal through WiFi module to realize remote control.

[0077] In addition, the relay 16 is used to control the on and off of the electromagnetic valve 4, the OLED screen 17 is used to display the water consumption data of the metering valve, and the flash memory 15 is used to store the water consumption data of the metering valve, and the data is not lost in the case of a long-term power outage. The three-layer circuit board is encapsulated in a transparent meter box 18, and the transparent meter box 18 is installed in a meter cover 19. The transparent meter box 18 encapsulates the electronic counter (meter head) 1, and the meter cover 19 is connected to the valve body 2 and fixes the meter box 18.

[0078] The above is a description of a preferred embodiment of the present invention. A person skilled in the art may make many possible changes and modifications or modifications to the technical solution of the present invention using the above methods and technical contents, but this does not affect the essential content of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

[0079] Functions and Effects of the Embodiments

[0080] This embodiment aims at the large-scale farmland irrigation application scenario and provides an agricultural irrigation vertical propeller metering valve based on a WiFi remote control mode, which realizes an agricultural irrigation management mode of water saving and efficiency improvement such as precise metering, remote control, and digital statistics.

[0081] In terms of installation and application, this embodiment provides two valve types, namely, a spherical valve and a right-angle valve, which are suitable for two basic layout forms of horizontal and vertical pipeline distribution.

[0082] In terms of water control operation, this embodiment adopts electromagnetic valve remote control to realize the opening and closing of the metering valve, reducing manpower consumption; adjusting the preset pressure value of the pressure reducing valve at the water outlet of the metering valve to prevent metering distortion caused by small water flow and water backflow.

[0083] In terms of accuracy, an eight-blade spiral impeller is fixed on the transmission shaft of the present invention, and the impeller is made of lightweight ABS material, which has high strength and light weight, small starting inertia, sensitive rotation and accurate measurement.

[0084] In terms of control, the electronic counter (meter head) in this embodiment is equipped with a WIFI module and a large-capacity flash memory. Users can not only remotely monitor and control a single metering valve through a mobile phone, but also realize wireless networking control of multiple metering valves with mobile phones or computers. In addition, the large-capacity flash memory ensures long-term stable storage of the metering valve count value in a power-off state, which is convenient for users to check at any time.

[0085] The above-mentioned embodiments are preferred examples of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. A WiFi remote-controlled agricultural irrigation vertical propeller metering valve, characterized in that: include: Electronic counter, used to receive external signals and record real-time water flow data; The valve body is provided with a water inlet and a water outlet on the outside, the valve body is detachably connected to the electronic counter by bolts, and a valve core assembly is installed inside to control the water flow and transmit the water flow data; A valve cover device, connected to the valve body and used for sealing the valve body; The solenoid valve and the pressure reducing valve are installed on both sides of the valve body respectively. The solenoid valve is used to control the opening and closing of the entire metering valve, and the pressure reducing valve is used to adjust the inlet and outlet water pressure of the metering valve. The valve core assembly includes a magnetic transmission unit, an opening and closing unit, a rectifying unit and a helical impeller unit. The magnetic transmission unit is connected to the electronic counter and the helical impeller unit, and the helical impeller unit is connected to the valve cover device, the opening and closing element and the rectifier unit. The helical impeller unit generates water flow data by rotating, and the magnetic transmission unit transmits the water flow data to the electronic counter.

2. The WiFi remote-controlled agricultural irrigation vertical propeller metering valve according to claim 1 is characterized in that: in, The rectifier unit includes an upper rectifier and a lower rectifier, The lower rectifier adopts a barrel-type structural design and is installed in the threaded hole of the valve body. A fixed sealing ring is installed on the top and fixed by screws. A radial mesh is opened on the bottom, and a shaft tip is installed in the center of the bottom. The shaft tip is connected to the spiral wing impeller unit to achieve radial positioning of the spiral wing impeller unit. The upper rectifier is composed of six vertical blades and is installed below the opening and closing unit to rectify the water flow passing through the propeller unit to form a stable water head.

3. The WiFi remote-controlled agricultural irrigation vertical propeller metering valve according to claim 1, characterized in that: in, The helical impeller unit comprises a helical impeller and a transmission shaft, and the helical impeller and the transmission shaft are connected by an interference fit. The end of the transmission shaft connected to the helical impeller is provided with an axial hole, in which a shaft tip sleeve is installed to cooperate with the shaft tip of the lower rectifier, and the other end of the transmission shaft is a shaft tip, which cooperates with the shaft tip sleeve of the valve cover device.

4. The WiFi remote-controlled agricultural irrigation vertical propeller metering valve according to claim 1, characterized in that: in, The magnetic transmission unit comprises an upper magnetic wheel and a lower magnetic wheel. The upper magnetic wheel is connected to the electronic counter, and the lower magnetic wheel is connected to the shaft end of the transmission shaft, and is used to transmit the rotational motion of the helical impeller. The upper and lower magnetic wheels realize non-contact transmission by utilizing the magnetic interaction principle of magnetic materials.

5. The WiFi remote-controlled agricultural irrigation vertical propeller metering valve according to claim 1, characterized in that: in, The opening and closing unit includes an opening and closing element, a diaphragm, a sealing guide sleeve, a reset spring and a fixed plate. The diaphragm and the opening and closing element are connected together through the fixed plate. When the diaphragm is deformed, it overcomes the reset spring and drives the opening and closing element to move up and down to meet the requirements of valve opening and closing and working pressure adjustment. The bottom center of the opening and closing element is a circular hole structure. The transmission shaft in the helical impeller unit and the circular hole are closely fitted. The sealing guide sleeve is installed in the circular hole. The reset spring is placed above the fixed disk and deforms with the movement of the opening and closing element. The transmission shaft passes through the fixed disk and the center of the reset spring to drive the magnetic transmission unit to rotate.

6. The WiFi remote-controlled agricultural irrigation vertical propeller metering valve according to claim 1, characterized in that: in, The valve cover device comprises a valve cover, a flange end cover and a shuttle valve. The valve cover and the diaphragm form a sealed cavity, and a shuttle valve is installed on the valve cover. One end of the shuttle valve is connected to the sealed cavity, and the other two ends are respectively connected to the solenoid valve and the pressure reducing valve, so as to connect the water flow of the solenoid valve or the pressure reducing valve to the sealed cavity of the metering valve, thereby controlling the water flow. A shaft tip sleeve is installed at the bottom center of the flange end cover, which cooperates with the shaft tip of the transmission shaft to position the transmission shaft. In addition, the valve cover positions and fastens the diaphragm, return spring, propeller impeller and transmission shaft, and the flange end cover fastens the valve cover and valve core assembly.

7. The WiFi remote-controlled agricultural irrigation vertical propeller metering valve according to claim 1, characterized in that: in, The solenoid valve is equipped with three interfaces, which are respectively connected to the three-way on the filter at the water inlet of the metering valve, the shuttle valve on the valve cover and the pressure relief pipeline. The solenoid valve is automatically closed when the power is off and opened when the power is on. In addition, the solenoid valve is equipped with a manual operating device for manually opening and closing the metering valve. There are four interfaces on the pressure reducing valve, which are respectively connected to the tee of the filter at the water inlet of the metering valve, the filter at the water outlet, the shuttle valve on the valve cover and the pressure relief pipe, and a pressure regulating bolt is installed on the top of the pressure reducing valve to adjust the working pressure of the pressure reducing valve.

8. The WiFi remote-controlled agricultural irrigation vertical propeller metering valve according to claim 1, characterized in that: in, The valve body has two design structures: spherical type and right-angle type, which are respectively suitable for horizontal distribution or vertical distribution of pipelines. The water inlet and outlet of the valve body are processed with three-inch internal threads for easy connection with external pipes. There are bolt holes and sealing annular grooves on the top of the valve body for fixing the diaphragm, valve cover and flange end cover. In addition, the valve body has three threaded holes, two of which are used to install filters at the water inlet and outlet, respectively, and are connected to the solenoid valve and the pressure reducing valve respectively. A plug is installed in the threaded hole near the bottom of the valve body, which is used to clean the valve body channel through the threaded hole when it is blocked.

9. The WiFi remote controlled agricultural irrigation vertical propeller metering valve according to claim 1, Features: in, The core of the electronic counter is composed of three layers of circuit boards. The first layer is equipped with a digital encoder, the second layer is equipped with an STM32 module, a WiFi module, and a flash memory, and the third layer is equipped with a relay. The working process is as follows: Step A, the end of the rotating shaft of the digital encoder is connected to the upper magnetic wheel, and the rotational motion transmitted by the lower magnetic wheel is converted into a digital pulse signal for processing by the STM32 module; Step B, the STM32 module accumulates the processed data to the flash memory for storage, and the storage data in the flash memory is displayed on the OLED screen through the STM32 module IIC interface on the one hand, and is transmitted to the mobile phone terminal in real time through the WiFi module on the other hand. In addition, the STM32 module receives the opening and closing instructions issued by the mobile phone terminal through the WiFi module to realize remote control. In addition, the relay is used to control the power on and off of the electromagnetic valve, the OLED screen is used to display the metering valve water use data, and the flash memory is used to store the metering valve water use data. The data is not lost in the case of long-term power failure, and the three-layer circuit board is encapsulated in a transparent meter box, and the transparent meter box is installed in the table cover.

10. The WiFi remote-controlled agricultural irrigation vertical propeller metering valve according to claim 1, characterized in that: Also includes: The battery box is used to supply power to the electrical devices inside the entire metering valve. The battery box is connected to the outside of the valve body through a hanging ear, a socket is installed on the outside of the battery box, and a detachable lithium battery pack is built in the battery box. The lithium battery pack supplies power to various components in the entire metering valve.

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