CN103736354B - The round-the-clock wet dust separater of scavenging vehicle and combination dust removal process method - Google Patents

Abstract

The present invention is the round-the-clock wet dust separater of scavenging vehicle and combination dust removal process method, its structure comprises venturi scrubber, cyclone dust collectors, flushing valve, settling tank, baffle plate, water-circulating pipe, altitude valve, overflow pipe, mudhole, its processing method comprises: 1) utilize venturi scrubber as primary dust removing; 2) utilize cyclone dust collectors as two-stage dust removal.Advantage: 1) utilize cyclone dust collectors to make moisture trap and do not produce secondary pollution, play the effect of final dusting.2) venturi scrubber and cyclone dust collectors all belong to wet scrubber, not only can process dry dust-contained airflow, and can process the situation of the dust-contained airflow of high humility, particularly rainy day or surface gathered water, can be used for all weather operations of sweeper.3) vacuum utilizing venturi scrubber self to be formed and realize recycling of water, reduces energy consumption, reduces the consumption of water.4) simple, efficiency of dust collection arrival more than 95% is run, meet the requirement of environmental protection.

Description

All-weather wet dust removal device for cleaning vehicle and combined dust removal treatment method

technical field

The invention relates to an all-weather wet dust removal device for a cleaning vehicle and a combined dust removal treatment method, belonging to the technical field of environmental protection.

Background technique

Currently used sweepers include dry sweepers, wet sweepers, and pure suction sweepers. However, these sweepers consume a lot of energy, have complex structures, are inconvenient to use and maintain, cannot be used for cleaning in various climates and different dry road surfaces, and there is still a small amount of dust that cannot be removed, causing secondary pollution to the environment. The reason is that the dust concentration is high or some dust particles are small in size. In order to solve this problem, the volume of the dust collector or the power of the extension is generally increased, but the effect is still very small.

Contents of the invention

The present invention proposes an all-weather wet dedusting device and combined dedusting treatment method for cleaning vehicles. The sedimentation water tank and water circulation pipe make the water mist generated by the dust in the Venturi dust collector absorb 95% of it, and then the remaining dust is removed by the cyclone dust collector to realize the separation of gas and water, which greatly improves the dust removal efficiency.

Technical solution of the present invention: an all-weather wet dust removal device for cleaning vehicles, the structure of which includes a Venturi dust collector, a cyclone dust collector, a flushing valve, a sedimentation tank, a baffle, a water circulation pipe, a water level control valve, an overflow pipe, and a mud discharge hole , where the cyclone dust collector is installed at the rear of the Venturi dust collector and connected through the diffuser pipe in the Venturi dust collector; the throat pipe in the Venturi dust collector is connected to one end of the water circulation pipe, and the other end of the water circulation pipe is inserted into the sedimentation In the water tank, a flushing valve is installed between the cyclone separator and the settling water tank, a water level control valve is set on the baffle in the settling water tank, an overflow pipe is set on the upper part of the settling water tank, and a mud discharge hole is installed in the lower part of the settling water tank.

The combined dust removal treatment method comprises the following steps:

(1) Use the Venturi dust collector as the primary dust removal;

(2) Use the cyclone dust collector as the secondary dust removal.

Advantages of the present invention:

1) Use the vacuum formed by the Venturi dust collector to realize water recycling, thereby not only reducing energy consumption, but also reducing water consumption;

2) Combining Venturi dust collector and cyclone dust collector to achieve high-efficiency dust removal. Using cyclone dust collector as a gas-water separator will not cause secondary pollution, and at the same time play the role of secondary dust removal, and the dust removal efficiency is greatly improved;

3) Venturi dust collectors and cyclone dust collectors are both wet dust collectors, which can not only handle dry dust-laden airflow, but also high-humidity dust-laden airflow, especially in rainy days or when there is water on the road, and the dust removal efficiency can reach above 95. Therefore, this high-efficiency combined dust collector can be used for all-weather operations in various occasions of the sweeper, not only for secondary dust removal, but also for gas-water separation;

4) High efficiency, low energy consumption and simple operation, it is a high-efficiency and low-cost composite process treatment method. The treatment efficiency can reach more than 95%, which can meet the requirements of environmental protection.

Description of drawings

Figure 1 is a schematic side view of an all-weather wet dust removal device for a sweeping vehicle.

In the figure, 1 is a Venturi dust collector, 2 is a cyclone dust collector, 3 is a flushing valve, 4 is a sedimentation tank, 5 is a baffle, 6 is a water circulation pipe, 7 is a water level control valve, 8 is an overflow pipe, and 9 is Mud discharge port, 10 is a shrinkage pipe, 11 is a throat pipe, and 12 is a diffusion pipe.

detailed description

Referring to accompanying drawing 1, the all-weather wet dust removal device for sweeping vehicles has a structure including Venturi dust collector 1, cyclone dust collector 2, flushing valve 3, sedimentation water tank 4, baffle plate 5, water circulation pipe 6, water level control valve 7, overflow Pipe 8, mud discharge hole 9, wherein the cyclone dust collector 2 is installed at the rear of the Venturi dust collector 1, and is connected through the diffusion pipe in the Venturi dust collector 1; the throat pipe in the Venturi dust collector 1 is connected to the water circulation pipe 6 The other end of the water circulation pipe 6 is inserted into the sedimentation water tank 4, a flushing valve 3 is installed between the cyclone separator 2 and the sedimentation water tank 4, a water level control valve 7 is set on the baffle plate 5 in the sedimentation water tank 4, and the water tank 4 The upper part is provided with an overflow pipe 8, and the settling water tank is equipped with a mud discharge hole 9 at the lower part of the cyclone separator.

The Venturi dust collector 1 includes a shrink tube, a throat and a diffuser, a large amount of dust is absorbed by the atomized water, and the throat extends into the water tank through the water circulation pipe 6 .

The cyclone dust collector 2 includes a tangential air inlet pipe, a cylindrical barrel, an outlet, and a collecting cone. The mixture mixed by the Venturi dust collector enters the cyclone dust collector through the tangential air inlet pipe. The area is rotated and centrifuged to remove water and dust, the purified gas is discharged from the middle outlet, and the separated water and dust are discharged into the sedimentation water tank 4 from the lower collecting cone.

The combined dust removal treatment method comprises the following steps:

(1) Use the Venturi dust collector as the primary dust removal, including

1) The dust-laden gas from the ground capture system enters the shrinking tube in the Venturi dust collector. As the cross-sectional area gradually decreases, the static pressure in the shrinking tube is converted into kinetic energy, which increases the flow rate in the tube, and the pressure energy of the airflow is gradually converted into kinetic energy;

2) Set the air velocity at the throat inlet of the Venturi dust collector to 60-80m/s, when the air flow passes through the Venturi shrinkage tube and the throat, a certain degree of vacuum is formed due to the speed change, and the water is lifted from the inlet pipe to the throat;

3) Use the water circulation pipe to lift the purified water in the sedimentation tank to realize water recycling;

4) The washing liquid is sucked in from the water tank by the negative pressure formed by the Venturi dust collector. The washing liquid enters through the nozzles evenly distributed along the periphery of the throat, and the droplets are atomized and accelerated by the high-speed airflow. During the acceleration process of the droplets , due to the inertial collision between droplets and particles, the capture of fine particles is realized, and the first-level dust removal is completed;

(2) Use cyclone dust collector as secondary dust removal, including

1) After being dedusted by the Venturi dust collector, it enters the cyclone separator, and the liquid droplets entrained in the airflow are thrown to the surrounding of the dehydrator by the centrifugal effect of the rotating airflow to separate it from the gas, and complete the secondary dust removal;

2) The droplets return to the inside of the water tank under the action of gravity, and a flushing valve 3 is installed between the cyclone separator 2 and the water tank 4 to wash away the dust in the cyclone dust collector 2, and the sludge is discharged from the sludge discharge port 9.

Claims (1)

1. the round-the-clock wet dust separater of scavenging vehicle, it is characterized in that comprising venturi scrubber, cyclone dust collectors, flushing valve, settling tank, baffle plate, water-circulating pipe, altitude valve, overflow pipe, mudhole, wherein cyclone dust collectors are arranged on the rear portion of venturi scrubber, are connected by the anemostat in venturi scrubber; Trunnion in venturi scrubber connects with one end of water-circulating pipe, the other end of water-circulating pipe inserts in settling tank, between cyclone separator and settling tank, flushing valve is housed, baffle plate in settling tank establishes altitude valve, overflow pipe is established on settling tank top, and settling tank is equipped with mudhole in cyclone separator bottom; Described venturi scrubber comprises collapsible tube, trunnion and anemostat, and the water that a large amount of dust is atomized absorbs, and wherein trunnion stretches in water tank by water-circulating pipe;

Combination dust removal process method comprises the steps:

(1) utilize venturi scrubber as primary dust removing;

(2) utilize cyclone dust collectors as two-stage dust removal;

Described step (1) utilizes venturi scrubber as primary dust removing, comprising:

1) from the dusty gas of ground trapping system, enter the collapsible tube in venturi scrubber, because basal area reduces gradually, in collapsible tube, static pressure is converted into kinetic energy, and velocity in pipes is increased, and the pressure energy of air-flow gradates as kinetic energy;

2) air velocity of the trunnion porch set in venturi scrubber is 60-80m/s, when air-flow is through venturi collapsible tube and the trunnion vacuum certain because velocity variations is formed, water is promoted to trunnion by water inlet pipe;

3) water-circulating pipe is utilized to realize recycling of water;

4) water is promoted suction by settling tank and comes in by the negative pressure that cleaning solution is formed by venturi scrubber, cleaning solution is by entering along the equally distributed nozzle of trunnion periphery, drop is by high-speed gas atomization and acceleration, in drop accelerator, due to the inertial collision between drop and particle, realize the trapping of subparticle, complete primary dust removing; Described step (2) utilizes cyclone dust collectors as two-stage dust removal, comprising:

1) after venturi scrubber dedusting, enter cyclone separator, utilize the centrifugal action of swirling eddy to get rid of around dehydrator it is separated from the gas by the drop carried secretly in air-flow, complete two-stage dust removal;

2) drop gets back to settling tank inside under gravity, being separated of dust and clear water is realized by precipitation at settling tank, clear water is recycled by water-circulating pipe, between cyclone separator and settling tank, flushing valve is housed, rinsed out by dust in cyclone dust collectors, mud is discharged from mud discharging mouth.