dosing device

NegotiableUpdate on 05/19

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Nature of the Manufacturer: Producers

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Overview

Dosing device is a key equipment that solves specific problems in various industrial processes by precisely controlling the dosage of chemicals. Understanding its working principle, classification, components, and selection and maintenance points can help you better choose and use it.

Product Details

🔧 Classification and application of dosing devices

There are many types of dosing devices, which can be divided according to control methods, installation forms, and application fields to meet different scenario requirements.

Classification method	type	Main Features	Typical application scenarios
Control method	Manual dosing	Simple operation and low cost; The accuracy and efficiency are relatively low.	In situations where the dosage of medication is small and the frequency is low.
	Automatic dosing	High precision, continuous operation, and unmanned operation; Support remote monitoring and linkage control.	Industrial production, large-scale water treatment plants, boiler systems, etc.
Installation type	fixed type	Long term stable operation with strong overall integrity.	Fixed industrial production lines and sewage treatment plants.
	Mobile (trolley type)	Flexible and adaptable, convenient for temporary or decentralized operations.	Multi location rotation of tasks, temporary handling tasks, and equipment cleaning.
Application field	Water treatment dosing device	Add coagulants, disinfectants, scale inhibitors, etc. to ensure water quality.	Waterworks, sewage treatment plants, swimming pools, circulating cooling water systems.
	Boiler dosing device	Prevent scaling and corrosion, extend boiler life.	Treatment of feedwater (ammonia, hydrazine) and boiler water (phosphate) for power plants, power stations, and industrial boilers.
	Oilfield dosing device	Inject multiple functional agents to ensure mining and transportation.	Oil extraction involves injecting coagulants, corrosion inhibitors, demulsifiers, etc.
	Other industrial dosing devices	Meet specific process requirements.	Chemicals (catalysts), food (preservatives), pharmaceuticals (raw material addition), etc.

Key components

A complete dosing device is like a collaborative team, with the main members including:

Solution tank: also known as a dissolution tank, is a container for dissolving and storing pharmaceutical solutions. Its volume can range from 0.1 cubic meters to 20 cubic meters, and the material needs to be selected according to the corrosiveness of the agent (such as stainless steel, carbon steel lining, PE plastic, etc.).

Blender: Ensure the dissolution of solid agents, make the solution concentration uniform, and avoid precipitation.

Metering pump: It is the "heart" of the device, responsible for precise delivery of medication. Its core advantage lies in the precise adjustment and control of flow rate, as well as high measurement accuracy. The type of metering pump (such as mechanical diaphragm pump, hydraulic diaphragm pump, plunger pump) and material (such as PP, PVC, SS316 stainless steel) should be selected according to the properties of the liquid and pressure requirements.

Control system: It is the "brain" of the device. It can be a simple start stop button or an advanced automatic system that can automatically adjust the dosage based on feedback signals from online instruments such as flow rate, pH value, conductivity, etc., achieving precise control.

Auxiliary components: including safety valves, check valves, pressure gauges, Y-shaped filters, buffers, level gauges, etc., which together ensure the safe and stable operation of the system.

Selection and maintenance points

Choosing the appropriate dosing device and maintaining it properly is the key to ensuring its long-term stable operation.

Key selection points

Clarify process requirements: Firstly, determine the required dosage (flow rate, such as liters/hour), dosing pressure (to overcome pipeline resistance), and physicochemical properties of the agent (such as concentration, viscosity, corrosiveness). This is the basis for selecting the parameters and component materials of the metering pump.

Determine configuration level: Choose manual control, semi-automatic or fully automatic control according to the level of automation requirements. Based on the importance of continuous operation of the system, decide whether to adopt a configuration of "one in use and one backup" (one working and one backup) or a combination of multiple pumps.

Choose appropriate materials: The materials of all components in contact with the drug (solution tank, pump, pipeline, valve) must be able to withstand the corrosion of the drug to ensure equipment life and solution purity.

Maintenance points

Regular inspection and calibration: Regularly check whether the dosing accuracy of the metering pump is accurate and whether the mixer is running normally.

Maintain cleanliness and smoothness: Regularly clean the solution tank to prevent impurities from scaling; Clean the Y-shaped filter to prevent pump and pipeline blockage.

Pay attention to safety components: Check whether safety valves, check valves, and other safety components are working properly to ensure system safety.

summary

In general, a dosing device is a key equipment that solves specific problems in various industrial processes by precisely controlling the dosage of chemicals. Understanding its working principle, classification, components, and selection and maintenance points can help you better choose and use it.