Hydraulic Diaphragm Metering Pump

Abstract

The invention discloses a hydraulic diaphragm-type metering pump. The hydraulic diaphragm-type metering pump comprises a box, a medium conveying unit and a plunger driving mechanism. The medium conveying unit is provided with at least one medium conveying set, each medium conveying set is provided with two symmetrical medium conveying parts, and plungers are arranged in the medium conveying parts. At least part of the plunger driving mechanism is located in the box, the plunger driving mechanism comprises a power transmission mechanism and at least one intermediate transfer mechanism, and the power transmission mechanism is provided with a power output wheel. Each intermediate transfer mechanism comprises an eccentric wheel, a sliding block and a sliding block base, wherein the eccentric wheel is eccentrically installed on the power output wheel, and the sliding block is movably connected to the eccentric wheel and is contained in a sliding block sliding groove in the corresponding sliding block base. The plungers in the two medium conveying parts in each set are hinged to the corresponding sliding block base. According to the hydraulic diaphragm-type metering pump, at least two plungers can be driven to act at the same time; besides, the hydraulic diaphragm-type metering pump is compact in structure, small in size, capable of reducing the production cost and the use cost of users, easy to use and convenient to maintain.

Description

technical field [0001] The invention relates to a hydraulic diaphragm metering pump, which is mainly used in chemical plants, oil fields, electric power and other industries; it is used in working conditions such as adding reagents into chemical process and outputting liquid requiring large flow and high head. Background technique [0002] At present, the existing domestic hydraulic diaphragm metering pumps have single-head, double-head and three-head types, and in the plunger drive mechanism, the transmission part from the power source to the plunger is mostly a single-link mechanism. To increase the number of heads, you can only increase the connecting rod mechanism in the axial direction of the eccentric shaft, thereby driving multiple plungers, which will cause the eccentric shaft to be too long, resulting in a large volume, which is very unfavorable; in addition, the hydraulic diaphragm metering pump of the prior art The delivery liquid flow rate is small, the head is h...

AI Technical Summary

Problems solved by technology

[0002] At present, the existing domestic hydraulic diaphragm metering pumps have single-head, double-head and three-head types, and in the plunger drive mechanism, the transmission part from the power source to the plunger is mostly a single-link mechanism. To increase the number of heads, you can only increase the connecting rod mechanism in the axial direction of the eccentric shaft, thereby driving multiple plungers, which will cause the eccentric shaft to be too long, resulting in a large volume, which is very unfavorable; in addition, the hydraulic diaphragm metering pump of the prior art The conveying liquid has a small flow rate and a high lift or a large flow rate and a small lift; while a single-head hydraulic diaphragm metering pump that needs to meet both a large flow rate and a high lift requires a large volume of the pump body, high cost, inconvenient maintenance and increased after-sales costs.

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