The melt pump for labyrinth drip irrigation tape is a key piece of equipment specifically used in the production of labyrinth drip irrigation tape. The following is a detailed introduction to it:

Working Principle

The melt pump is usually composed of two meshing gears. When the gears rotate in the specified direction, the melt enters the tooth grooves of the two gears in the feeding area. As the gears turn, the melt is carried from both sides into the conveying area. When the gears mesh again, the melt in the tooth grooves is extruded out of the discharge area and pressed into the outlet pipeline. As long as the pump shaft rotates, the gears will pump the melt towards the outlet side. Therefore, a very high pressure can be achieved at the pump outlet, while there are no overly strict requirements for the inlet flow rate and pressure.

Structural Features

Wear - resistant Materials and Processes: The pump body, driving gear, and driven gear are forged from nitrided steel. The bearing sleeve adopts a new quenching and nitriding process with imported materials. The driving shaft and driven shaft use new wear - resistant materials to extend the service life and reduce maintenance costs.

Lubrication and Sealing Design: A circular edge is set directly below the opening at the bottom of the pump body. There is a lubrication groove inside to store excess melt and lubricate the driving shaft. A notch for the lubrication groove is set on the circular edge to discharge excessive melt and prevent the lubrication groove from being blocked. At the same time, a high - temperature - resistant sealing ring is installed inside the circular edge to play a sealing role during the material extrusion process.

Technical Advantages

Stable Extrusion: It can effectively block the impact of pressure fluctuations and flow rate fluctuations in the feeding area on the discharging area, achieve stable extrusion, improve the dimensional accuracy of extruded products, reduce the rejection rate, and ensure the stable quality of labyrinth drip irrigation tape.

Accurate Metering: The discharge volume of the pump is constant for each rotation of the gears, enabling precise metering of the melt, and thus accurately controlling the production dimensions, flow rate, and other indicators of the drip irrigation tape.

Improved Efficiency: Since the extruder is equipped with a melt pump, the pressure - reducing function of the extruder can be transferred to the gear pump. The extruder can operate under low - pressure and low - temperature conditions, with a significant reduction in leakage flow and an increase in production output.

Application Fields

Agricultural Irrigation: It is used to produce various specifications of labyrinth drip irrigation tape, which are widely applied in agricultural irrigation fields such as field crops, orchards, and vegetable greenhouses to achieve precise irrigation and improve the utilization efficiency of water resources.

Landscape Gardening: It plays a role in the irrigation systems of urban gardens and ecological gardens, providing an appropriate amount of water for plants, reducing water waste, and saving maintenance costs.

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