Fan of environmental sanitation cleaning vehicle

Abstract

The utility model discloses a fan of an environmental sanitation cleaning vehicle. An air outlet pipe of the fan is perpendicular to the ground, and an air outlet is arranged upwards; an air outlet of an air outlet pipe of the fan is vertically connected with an exhaust duct through a flexible connecting pipe, and the exhaust duct is transversely arranged; a silencer is arranged in the exhaust duct; and a shutter is arranged at an exhaust outlet of the exhaust duct. According to the utility model, the noise during working can be reduced, and water can be prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fan of a sanitation cleaning vehicle. BACKGROUND

[0002] Most of the road cleaning uses sanitation cleaning vehicles. The core component of the sanitation cleaning vehicle is a fan. After the fan is started, it sucks the gas of the vehicle box, the pipeline connected with the box and the cleaning device collecting the road stains, and then forms a vacuum inside, so as to collect the road stains such as soil, dust, leaves and sewage. The effect of cleaning the road by the sanitation vehicle mainly depends on the suction force of the negative pressure and flow formed by the fan. The design of the fan has an important influence on the quality of the sanitation cleaning vehicle.

[0003] At present, the fan of most sanitation vehicles does not take exhaust noise reduction measures, and the noise is large. Or, noise reduction measures are taken, but the exhaust is towards the sky, which causes rainwater to flow back to the inside of the fan during rainy days, causing damage.

[0004] In addition, in the prior art, most of the centrifugal fans of the sanitation vehicles adopt a single impeller and a double bearing structure. The double bearing structure is divided into two types. One type is that a belt pulley is arranged in the middle of the double bearing, and the other type is that the belt pulley is arranged outside the double bearing structure. The defects of this structure are mainly as follows: the double bearing support structure has a long distance between the support points of the rotating shaft, and under the action of the transverse belt tension, the rotating shaft is easily deformed, which causes large vibration of the fan and shortens the service life of the fan. In addition, due to the length limitation of the impeller, the output flow and negative pressure of the fan cannot meet the high cleaning working condition requirement. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem of providing a fan of a sanitation cleaning vehicle to overcome the defects of the prior art.

[0006] In order to solve the above technical problems, the fan of the sanitation cleaning vehicle of the utility model comprises a fan, and the outlet pipe of the fan is arranged vertically to the ground and the outlet is arranged upward. The outlet of the outlet pipe of the fan is connected with an exhaust duct vertically through a flexible connecting pipe, and the exhaust duct is arranged horizontally. An acoustic absorber is arranged in the exhaust duct. The exhaust port of the exhaust duct is provided with a louver.

[0007] The acoustic absorber comprises an acoustic absorption ventilation channel formed by a plurality of parallel and parallel arranged acoustic absorption plates. The acoustic absorption plates are provided with acoustic absorption holes.

[0008] The fan comprises two impellers which are connected in series on the rotating shaft, and the rotating shaft is supported by the first bearing, the second bearing and the third bearing. The double impellers are arranged between the first bearing and the second bearing. The second bearing and the third bearing are provided with a belt pulley, and the belt pulley is connected to the clutch through a belt.

[0009] The double impeller of the fan is provided with an annular cavity; the annular cavity is composed of an annular volute and an annular flow guide ring.

[0010] The exhaust outlet of the exhaust channel extends from one side of the carriage of the sanitation cleaning vehicle and communicates with the outside of the carriage.

[0011] The material of the flexible connecting pipe is canvas or silica cloth.

[0012] The annular cavity communicates with the rear-end impeller through a flow guide plate.

[0013] The structure of the utility model, because adopt the silencer, the flexible connection, the exhaust louver, working noise can obviously drop, the exhaust channel is horizontally arranged, adopts the side exhaust structure, can effectively prevent water, and the work is not affected by the weather.

[0014] The utility model discloses, because adopt three bearing supports, overcome the defects of prior art, and the bearing is arranged at both ends of the belt pulley, and the distance of two support points is greatly shortened, and the rigidity of the rotating shaft is increased, and the deformation of the shaft is reduced, and the stability is good, and the operation is stable, and the damage is not easy, and the maintenance cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the exhaust channel horizontal arrangement schematic diagram of the utility model;

[0016] Figure 2 It is the overhead view of the silencer in the exhaust channel of the utility model;

[0017] Figure 3 It is the structure schematic diagram of the silencer of the utility model;

[0018] Figure 4 It is the bearing support schematic diagram of the fan of the utility model. DETAILED DESCRIPTION

[0019] The utility model will be described in detail in combination with the drawings and specific embodiment:

[0020] As Figure 1 The utility model discloses sanitation cleaning vehicle's fan 1's air outlet pipe is perpendicular to ground, and the air outlet is upwards set. The air outlet of the air outlet pipe of the fan is connected with the exhaust channel 3 through the flexible connecting pipe 2 perpendicularly, and the exhaust channel is horizontally arranged. The exhaust channel is provided with the silencer 4. The exhaust outlet of the exhaust channel is provided with the louver 5.

[0021] The exhaust outlet of the exhaust channel extends from one side of the carriage of the sanitation cleaning vehicle and communicates with the outside of the carriage.

[0022] The material of the flexible connecting pipe is canvas or silica cloth.

[0023] The impurities in the gas sucked by the fan are deposited in the box after passing through the box. The gas passes through the fan, the flexible connection, the air exhaust duct, the muffler, and finally the air exhaust louvers to be discharged into the atmosphere.

[0024] As shown in Figure 2 , Figure 3 , the muffler comprises a sound absorbing air duct formed by a plurality of parallel and side-by-side sound absorbing plates 42. A sufficient number of sound absorbing holes 41 are provided on the sound absorbing plates. The sound absorbing plates are wrapped with sound absorbing cotton.

[0025] As shown in Figure 4 , the fan comprises two impellers 103. The two impellers are connected in series on the rotating shaft 111. The rotating shaft is supported by the first bearing 101, the second bearing 112 and the third bearing 113. The two impellers are arranged between the first bearing and the second bearing. The second bearing and the third bearing are provided with a belt pulley 109 connected to the clutch 110 through a belt 108.

[0026] The two impellers of the fan are connected through an annular cavity. The annular cavity is composed of an annular volute 105 and an annular flow guide ring 104.

[0027] The annular cavity is communicated with the rear end impeller 103 through the flow guide plate 106.

[0028] The front end impeller 103 is communicated with the air inlet 102. The airflow is sucked from the air inlet 102, rotated and thrown out by the front end impeller 103, then passes through the annular cavity composed of the annular volute 105 and the annular flow guide ring 104, and then passes through the flow guide plate 106 to the rear end impeller 103, and is thrown out to the air outlet 107 by the rear end impeller 103.

Claims

1. A fan for a sanitation cleaning vehicle, characterized in that: The air outlet pipe of the fan (1) is vertically arranged on the ground with the air outlet upward; the air outlet of the air outlet pipe of the fan is vertically connected with the exhaust duct (3) through the soft connecting pipe (2), and the exhaust duct is horizontally arranged; the sound absorber (4) is arranged in the exhaust duct; the air outlet of the exhaust duct is provided with the louver (5).

2. The fan of the sanitation cleaning vehicle according to claim 1, characterized in that: The sound absorber comprises the sound absorption ventilation channel formed by the sound absorption plates (42) arranged in parallel; the sound absorption holes (41) are arranged on the sound absorption plates.

3. The fan of the sanitation cleaning vehicle according to claim 1 or 2, characterized in that: The fan comprises two impellers (103) which are connected in series on the rotating shaft (111), and the rotating shaft is supported by the first bearing (101), the second bearing (112) and the third bearing (113); the two impellers are arranged between the first bearing and the second bearing; the second bearing and the third bearing are provided with the belt pulley (109), and the belt pulley is connected with the clutch (110) through the belt (108).

4. The fan of the sanitation cleaning vehicle according to claim 3, wherein: The ring-shaped cavity is composed of the ring-shaped volute (105) and the ring-shaped flow guide ring (104).

5. The fan of the sanitation cleaning vehicle according to claim 1, wherein: The air outlet of the exhaust duct extends from the side of the carriage of the sanitation cleaning vehicle and communicates with the outside of the carriage.

6. The fan of the sanitation cleaning vehicle according to claim 1, wherein: The material of the soft connecting pipe is canvas or silica gel cloth.

7. The fan of the sanitation cleaning vehicle according to claim 4, wherein: The ring-shaped cavity communicates with the rear end impeller (103) through the flow guide plate (106).

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