Water-soluble fertilizer conveying pipe integrated with pulse plug cleaning structure

Abstract

The utility model provides a kind of water-soluble fertilizer conveying pipe of integrated pulse unblocking structure, comprising: conveying main pipeline, it is equipped with a three-way pipe on it, the lateral interface of three-way pipe piece is used as the injection point of unblocking pulse;Pulse generating unit, it includes air compressor, gas storage tank and high-speed solenoid valve connected in turn by pipeline, the outlet of high-speed solenoid valve is communicated with the lateral interface of three-way pipe piece by connecting pipeline;Detection control unit, it includes pressure sensor and system controller being arranged on the conveying main pipeline, the signal input end of pressure sensor and system controller is electrically connected, the control output end of system controller is electrically connected with high-speed solenoid valve.The utility model uses above-mentioned a kind of water-soluble fertilizer conveying pipe of integrated pulse unblocking structure, can automatically monitor pipeline pressure, immediately start unblocking program when detecting the sign of blockage, without manual intervention, guarantee the continuity and intelligentization of fertilization operation.

Description

Technical Field

[0001] This utility model relates to the field of agricultural irrigation and fertilization technology, and in particular to a water-soluble fertilizer delivery pipe with an integrated pulse unblocking structure. Background Technology

[0002] Water-soluble fertilizers are widely used in modern agriculture for precise fertilization through irrigation systems such as drip irrigation and sprinkler irrigation. However, during transportation, water-soluble fertilizers are prone to clogging in pipes, bends, and filters due to fertilizer crystallization, impurity deposition, or microbial growth. Traditional unclogging methods often involve manual tapping, segmented disassembly and flushing, or the use of chemical cleaning agents. These methods are inefficient, labor-intensive, and disruptive to the continuity of operations. Furthermore, chemical cleaning can corrode pipes and pollute the environment.

[0003] While some pneumatic unblocking devices exist in the existing technology, most are complex in structure, not integrated with the delivery pipeline, and their unblocking action is not timely. Furthermore, they lack automated detection and control mechanisms, making it difficult to achieve rapid response and efficient handling of blockages. Utility Model Content

[0004] The purpose of this invention is to provide a water-soluble fertilizer delivery pipe with an integrated pulse unblocking structure, which is compact, responds quickly, and has high unblocking efficiency.

[0005] To achieve the above objectives, this utility model provides a water-soluble fertilizer delivery pipe with an integrated pulse unblocking structure, comprising a main delivery pipe, a pulse generating unit, a detection and control unit, and a connecting structure. A tee fitting is provided on the main delivery pipe, with its side interface serving as the injection point for the unblocking pulse. The pulse generating unit includes an air compressor, an air tank, and a high-speed solenoid valve connected sequentially via pipelines. The outlet of the high-speed solenoid valve is connected to the side interface of the tee fitting through the connecting structure, and a one-way valve is provided on the connecting pipeline. The detection and control unit includes a pressure sensor and a system controller mounted on the main delivery pipe. The pressure sensor is electrically connected to the signal input terminal of the system controller, and the control output terminal of the system controller is electrically connected to the high-speed solenoid valve.

[0006] Preferably, the pressure sensor is installed on the main delivery pipeline downstream of the tee fitting.

[0007] Preferably, the one-way valve is directed from the high-speed solenoid valve to the main delivery pipeline.

[0008] Preferably, the pulse generating unit further includes a pressure regulating valve for adjusting the outlet pressure of the gas storage tank and a pressure gauge for displaying the pressure.

[0009] Preferably, the system controller is a programmable logic controller (PLC).

[0010] Preferably, the main pipeline is made of corrosion-resistant UPVC, PE, or stainless steel.

[0011] Therefore, the technical effects of this utility model using a water-soluble fertilizer delivery pipe with an integrated pulse unblocking structure are as follows: High degree of automation: The system can automatically monitor pipeline pressure and immediately start the unblocking procedure when signs of blockage are detected, without the need for manual intervention, thus ensuring the continuity and intelligence of fertilization operations.

[0012] High efficiency and non-destructive: It utilizes the instantaneous release of high-pressure gas pulses to generate impact force, which can effectively break or push away blockages. The blockage is cleared quickly and by physical means, without causing chemical corrosion or mechanical damage to the pipeline.

[0013] High structural integration: The unblocking system is seamlessly integrated with the main pipeline through a T-fitting, which is compact, does not take up too much space, and is easy to retrofit into existing irrigation systems.

[0014] Safe and reliable: The one-way valve effectively prevents fertilizer backflow and protects the precision pneumatic components; the pressure regulating valve and safety valve in front of the gas storage tank ensure the controllability of pulse energy and system safety. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a water-soluble fertilizer delivery pipe with an integrated pulse unblocking structure according to this utility model.

[0016] Figure Labels 1. Main pipeline; 2. Tee fitting; 3. Air compressor; 4. Air tank; 5. Pressure regulating valve; 6. Pressure gauge; 7. High-speed solenoid valve; 8. Check valve; 9. System controller. Detailed Implementation

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0018] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0019] Example 1 like Figure 1 As shown, the water-soluble fertilizer delivery pipe integrates a pulse unblocking structure, a fluid delivery subsystem, a pulse energy subsystem, and an intelligent control subsystem.

[0020] The fluid transport subsystem is centered on the main pipeline 1, which is the sole channel for transporting water-soluble fertilizer solution from the storage tank to the root zone or leaves of crops in the field. To introduce a blockage-clearing function without shutting down the system or damaging the integrity of the main pipeline, a high-pressure tee fitting 2 is strategically embedded in the main pipeline. This tee is not an ordinary fitting; its pressure rating must match or even exceed that of the main pipeline to withstand the instantaneous impact pressure generated during blockage clearing. The inner wall of its lateral interface should be as smooth as possible, and the connection to the blockage-clearing branch is typically via flanges or high-strength threaded connections to ensure reliable sealing.

[0021] The pulse energy subsystem, also known as the blockage clearing branch (not shown in the diagram), is an independent pneumatic circuit. Its energy source is the air compressor 3, which provides a continuous supply of compressed air. The air tank 4 is the core energy storage unit of this subsystem; its volume needs to be calculated and is typically between 5 and 50 liters, depending on the diameter and length of the main pipeline. Too small a volume will result in insufficient pulse energy, while too large a volume may cause slow response and increased costs. The pressure regulating valve 5 at the outlet of the air tank 4 is a key component for precisely controlling the pulse intensity, allowing operators to adjust it between 0.3 and 0.8 MPa according to actual working conditions (such as the estimated hardness of the blockage and the pipeline's pressure resistance limit). The pressure gauge 6 is used to visually display the set pressure. The high-speed solenoid valve 7 is the "shutter" of the circuit, with a response time typically required to be within 10 to 50 milliseconds to ensure the instantaneous release of high-pressure gas, forming a steep pressure wave. Finally, the one-way valve 8 is a crucial safety component. It acts like a check dam, ensuring that the fertilizer solution does not flow back into the precision and expensive pneumatic components under any circumstances (such as when the main pipeline pressure is momentarily too high or when there is a slight leakage from the solenoid valve), thus preventing corrosion and contamination.

[0022] The intelligent control subsystem is the brain of the system. The pressure sensor is the "nerve ending" of the system, and its installation location is highly strategic: it must be located downstream of the tee fitting 2 and as close as possible to the anticipated blockage point (such as the end of the pipe, after the filter, or the latter half of a long pipeline). This way, if a blockage occurs downstream, the sensor can immediately detect the abnormal increase in upstream pressure. The sensor transmits real-time, continuous pressure signals to the system controller 9, which in this example is preferably a programmable logic controller (PLC). Compared to simple microcontrollers or time relays, PLCs offer higher reliability, interference resistance, and logic processing capabilities. The PLC has a built-in control algorithm whose basic logic is to continuously monitor the pressure sensor signal and compare it with a preset "blockage pressure threshold." This threshold is not a fixed value but is set by the operator based on a stable pressure value during normal fertilization, increased by 15%-30%. When the monitored pressure continuously exceeds this threshold for a preset delay (e.g., 2-3 seconds to eliminate instantaneous pressure fluctuations), the PLC determines that a blockage has been confirmed.

[0023] Once a blockage is confirmed, the PLC immediately executes the unblocking procedure. Instead of simply opening the solenoid valve, it sends one or more extremely short pulse signals to the high-speed solenoid valve 7. The opening time (i.e., pulse width) of each pulse can be programmed between 0.1 and 0.5 seconds. This brief opening time is sufficient to allow a high-pressure, high-speed column of air to rush into the main pipe, but not enough to vent a large amount of gas, ensuring the power of subsequent pulses. This column of air acts like a "piston" within the pipe, violently compressing and pushing the liquid column in front of it, forming a powerful pressure wave (i.e., the beneficial use of the water hammer effect). This pressure wave travels to the blockage point at near-sonic speeds, generating strong shearing and impact forces on the blockage, thereby breaking it up or pushing it out of the pipe as a whole.

[0024] Therefore, the water-soluble fertilizer delivery pipe with the above-mentioned integrated pulse unblocking structure can automatically monitor the pipeline pressure and immediately start the unblocking program when signs of blockage are detected, without the need for manual intervention, thus ensuring the continuity and intelligence of fertilization operations.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A water-soluble fertilizer delivery pipe with an integrated pulse unblocking structure, characterized in that, include: The main pipeline is equipped with a tee fitting, and the lateral interface of the tee fitting serves as the injection point for the unblocking pulse. The pulse generating unit includes an air compressor, an air tank, and a high-speed solenoid valve connected in sequence via pipelines. The outlet of the high-speed solenoid valve is connected to the lateral interface of the tee fitting via a connecting pipeline. The detection and control unit includes a pressure sensor and a system controller installed on the main delivery pipeline. The pressure sensor is electrically connected to the signal input terminal of the system controller, and the control output terminal of the system controller is electrically connected to the high-speed solenoid valve. In addition, a one-way valve is installed on the connecting pipeline, the one-way valve being open from the high-speed solenoid valve to the main delivery pipeline.

2. The water-soluble fertilizer delivery pipe with an integrated pulse unblocking structure according to claim 1, characterized in that, The pressure sensor is installed on the main conveying pipeline downstream of the tee fitting.

3. The water-soluble fertilizer delivery pipe with an integrated pulse unblocking structure according to claim 1, characterized in that, The pulse generating unit also includes a pressure regulating valve for adjusting the outlet pressure of the gas storage tank.

4. The water-soluble fertilizer delivery pipe with an integrated pulse unblocking structure according to claim 3, characterized in that, The pulse generating unit also includes a pressure gauge for displaying pressure.

5. A water-soluble fertilizer delivery pipe with an integrated pulse unblocking structure according to claim 1, characterized in that, The system controller is a programmable logic controller, which is configured to: receive pressure data from the pressure sensor, and when the pressure data exceeds a preset threshold, send an opening command to the high-speed solenoid valve.

6. The water-soluble fertilizer delivery pipe with an integrated pulse unblocking structure according to claim 1, characterized in that, The main pipeline is made of corrosion-resistant UPVC, PE, or stainless steel.

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