A suction nozzle for a road sweep and a road sweeper

Abstract

A suction nozzle for a road sweep and a road sweeper are disclosed. The suction nozzle comprises an upper cover plate, a front baffle plate, a side rear baffle plate, a suction pipe, and the upper cover plate, the front baffle plate and the side rear baffle plate together form a suction nozzle cavity with an open lower end, and the front baffle plate is a thin plate of two or more layers of soft material. -The invention can realize that the garbage enters the suction nozzle cavity more easily, the air inlet quantity of the front baffle plate is smaller and more stable, the air inlet quantity of the side back baffle plate is larger, and the transverse wind force in the suction nozzle cavity is greater. At that same fan speed and power, the suction nozzle has stronger comprehensive dust absorption capacity; Or, on the premise of the same combined suction nozzle suction, the fan speed and power are lower, and the sweeper fuel consumption and noise are reduced.

Description

technical field [0001] The invention relates to the field of road cleaning equipment, in particular to a suction nozzle for a road sweeper and a road sweeper using the nozzle. Background technique [0002] The suction nozzle is one of the most important parts of the sanitation vehicle, which directly affects the vehicle's dust collection effect, vehicle operating fuel consumption and noise. The suction nozzle in this article refers to the suction nozzle used by road sweepers and their deformed vehicles (vacuum cleaners, sweepers, etc.). The common feature of these vehicles is that they use centrifugal fans to generate negative pressure for dust suction and garbage collection. [0003] In the existing technical solutions, the following technical solutions are generally adopted for the suction nozzle of the road sweeper: [0004] The suction nozzle includes an upper cover, a front baffle, a side rear baffle, and a suction pipe. The upper cover, the front baffle, and the side ...

AI Technical Summary

Problems solved by technology

[0009] The first defect: the larger garbage is not easy to enter the cavity of the suction nozzle, and the comprehensive suction of the suction nozzle is not strong

When the vehicle is working, the high-speed airflow acts on the rubber plate to generate a backward thrust. The rubber plate should not deform too much as much as possible to ensure a small gap at a constant height with the ground; if the rubber plate is too soft, it will Significant deformation occurs under the action, which causes the opening of the front side of the suction nozzle to be too large, and relatively more air entering the suction tube comes from the front side of the suction nozzle, so the air entering the cavity from the left and right sides and from the rear side gap will be relatively large. If it is reduced, the garbage inside the nozzle will not be easily blown up and rise into the suction pipe, which will also reduce the comprehensive dust collection effect of the nozzle assembly

[0012] Because the above two requirements for the bending stiffness of the rubber sheet are contradictory, the reality is that it can only be balanced. The rubber sheet is neither very soft nor very hard, so it is not easy for large pieces of garbage to enter the suction nozzle through the rubber sheet Inside the cavity, it is often accumulated in front of the front side baffle of the suction nozzle, and the gap between the front side baffle and the ground is also relatively large, thereby relatively reducing the amount of air entering the left, right, and rear sides of the suction nozzle, and entering the suction nozzle The garbage inside the cavity is not easy to be blown up and rise into the straw, and it will leak out from the gap at the back of the nozzle, resulting in unclean suction

[0013] The second defect: the comprehensive suction of the suction nozzle is unstable

Regardless of large pieces or small pieces of garbage, when the garbage props up the rubber front baffle and enters the nozzle, the ground clearance of the rubber plate will increase significantly, which will increase the air intake at the front side and reduce the left and right sides accordingly. The intake air volume of the side and rear side will also reduce the comprehensive dust collection capacity of the suction nozzle assembly

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