Saline solution flow control method and device as well as pre-wetting system of snow-removing spreader

Abstract

The invention discloses a saline solution flow control method and device as well as a pre-wetting system of a snow-removing spreader. The saline solution flow control method comprises the following steps: acquiring the current rotating speed of a feeding motor and the current rotating speed of a pre-wetting motor; determining the theoretical rotating speed of the pre-wetting motor according to the current rotating speed of the feeding motor and a predetermined pre-wetting proportion; judging whether the current rotating speed of the pre-wetting motor is lower than the theoretic rotating speed of the pre-wetting motor or not; if the current rotating speed of the pre-wetting motor is lower than the theoretic rotating speed of the pre-wetting motor, raising the current rotating speed of the pre-wetting motor in order to increase the current flow of a saline solution for the snow-removing spreader through a metering pump. By adopting the saline solution flow control method and device, the flow can be controlled accurately in a large range; the functions of automatic regulation and control of the proportion of the pre-wetting flow to the feeding amount of a snow-melting agent, adjustable pre-wetting proportion, overload protection, low liquid level and overload alarm and the like are realized; a diaphragm pump with a fluororubber diaphragm, stable displacement and shaft-free seal is selected, so that the flow of a pre-wetting water pump is ensured, and the running reliability is realized.

Description

technical field [0001] The invention relates to the field of snow removal spreaders, in particular to a salt solution flow control method and device, and a snow removal spreader prewetting system. Background technique [0002] With the development of society and the increasing traffic volume, the requirements for environmental protection and road maintenance are getting higher and higher. As an important equipment for ice and snow removal in winter—snow spreader is more and more widely used. [0003] figure 1 A schematic diagram of a pre-wetting system for a prior art snow removal spreader, such as figure 1 As shown, the pre-wetting system of the snow removal and spreading machine includes a water tank 101, a water pump 102 and a nozzle 103. The water tank 101, the water pump 102 and the nozzle 103 are connected in sequence through pipelines, and the salt solution can be pre-wetted through the water tank, the water pump and the nozzle. The channel is sprayed out to pre-we...

AI Technical Summary

Problems solved by technology

[0005] 1. In the existing pre-humidification system, the ratio of pre-humidification flow rate and snowmelting agent feeding volume cannot be automatically adjusted, and the pre-humidity ratio cannot be adjusted.

[0006] 2. The existing pre-humidification system is not equipped with a closed-loop control circuit

[0007] 3. The existing pre-humidification system does not have the functions of overload protection, low liquid level and overload alarm. When overload occurs, it is easy to cause damage to the pre-humidification system

[0008] 4. The current pre-humidification system adopts the centrifugal working principle of the electric water pump with unstable low-speed flow rate, and its speed is not proportional to the change of flow rate, so it is difficult to achieve a wide range of accurate control of the pre-humidity amount

[0009] 5. The existing pre-humidification system uses a shaft-sealed precision plunger pump that is highly sensitive to impurities in the salt solution and is easily damaged by impurities in the water, that is, the operation reliability is not high and the price is relatively expensive.

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