JPH03217616A - Exhaust device for working vehicle - Google Patents

Abstract

PURPOSE:To make favorable working environment for an operator in work and prevent air pollution by providing a wet type collecting tank on the lower part of a separating device connected to the extreme end of an exhaust pipe. CONSTITUTION:A separating device 14 consisting of a tangential inflow type cyclone is connected to the extreme end of an exhaust pipe introduced from an exhaust muffler 10. A wet type collecting tank 15 stored with the liquid 17 having adhesively collecting action of harmful component such as graphite contained in exhaust gas, is provided on the lower part of the separating device 14. Hereby, harmful component such as graphite contained in exhaust gas emitted at operation is separated with the separating device 14, dropped by self weight, and collected into the wet type collecting tank 15. Consequently, harmful component such as graphite to be the cause of air pollution can be removed from exhaust gas.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention is used for work vehicles such as garbage collection trucks that input garbage at the rear of the vehicle body, and is used to reduce the amount of garbage contained in exhaust gas that causes air pollution. It is used as an exhaust device to remove graphite, etc.

[Conventional technology]

Figure 2 shows a conventional example of an exhaust system installed in a work vehicle, such as a garbage collection vehicle. (1) is the front loading box of the garbage truck, (2) is the rear loading box, and (3) is the driving seat, (4) is the front wheel, (
5) indicates the rear wheel. A worker throws garbage into the garbage input port on the rear side of the rear cargo box (2) from behind. (6
) is the engine, (7) is the exhaust manifold for each cylinder, and (8) is the exhaust muffler connected to it by piping (
9) shows the exhaust pipe led out from it. In order to collect garbage from the roadside on the left side on roads other than narrow roads, the exhaust pipe (9) is bent halfway to the right in the direction of travel of the car, and its tip is positioned in front of the rear wheel (5), The exhaust gas from (6) is discharged from the lower right side of the vehicle body.

[Problem to be solved by the invention]

By the way, in the above exhaust system, the exhaust gas discharged from the exhaust pipe (9) is quickly dispersed into the atmosphere and diluted when the vehicle is running, so there is no problem. As a result, workers often inhale exhaust gas while working, which poses health management problems.

Therefore, P-type exhaust pipes and rising-type exhaust pipes that rise behind the driver's seat (3) have been proposed, and some of them have been put into practical use. However, these exhaust pipes are not exhaust pipes. Although the change in the location of the exhaust gas may help improve the working environment for workers during work, the exhaust gas may still be discharged into the atmosphere through the exhaust pipe while containing harmful components such as graphite. air pollution remains a problem.

This idea was devised in view of this situation, and its purpose is to improve the working environment for workers during work, and to improve the exhaust emissions of work vehicles in order to prevent air pollution. The goal is to provide equipment.

[Means to solve the problem]

In order to achieve the above object, the present invention connects the tip of the exhaust pipe led out from the exhaust muffler to a separator consisting of a tangential flow type cyclone, and removes graphite, a harmful component contained in the exhaust gas, from the bottom of the separator. It is equipped with a wet collection tank that stores a liquid that has the effect of collecting and adhering to water.

In addition, the exhaust pipe led out from the exhaust muffler is branched, one of which is opened at the lower left side of the vehicle body, and an on-off valve is installed in the middle that opens when driving and closes when working, and the other is a separation device consisting of a tangential flow type cyclone. At the bottom of the separator, there is a wet collection tank that stores a liquid that collects harmful components such as graphite contained in the exhaust gas.

[Effect]

According to this invention, harmful components such as graphite contained in exhaust gas emitted during work are separated by a separator, fall under their own weight, and are collected in a wet collection tank, so that they can be discharged. Harmful components such as graphite that cause air pollution can be removed from exhaust gas.

[Embodiment] Hereinafter, the configuration of the present invention will be explained based on an embodiment shown in FIG. However, in this embodiment, the same parts as those in FIG. 2 are given the same reference numerals, and the explanation thereof will be omitted.

In FIG. 1, (10) is an exhaust muffler, (11) is an exhaust pipe led out from the exhaust muffler (10), and is branched into a first branch pipe (12) and a second branch pipe (13) in the middle,
The first branch pipe (12) is bent to the right in the direction of travel of the vehicle, with its tip located in front of the rear wheel (5), and the second
The branch pipe (13) is bent and turned in the direction of travel of the vehicle and extended between the driver's seat (3) and the front cargo box (1), where it is raised almost vertically and its upper end is connected to the separating device. (14) is connected. A tangential flow type cyclone is used for the separation device (14), and in this type of tangential flow type cyclone, when exhaust gas is blown in tangentially from the top of the outer cylinder (14a) at a predetermined speed, the exhaust gas is It flows into the lower conical part while swirling along the inner wall surface of the outer cylinder (14a),
Here, the flow gradually changes to an upward flow in the center and the upper inner cylinder (14
b) When the harmful components such as graphite contained in the exhaust gas move inside the exhaust gas, they pass through the inside and exit from the exhaust pipe (14c), and when they rotate inside, the inner wall surface of the outer cylinder (14a) collides with and falls. (15) is a wet collection tank provided below the separator (14), and the outer cylinder (14) of the separator (14)
It is connected to the lower end of a) through a communication pipe (16), and contains a predetermined amount of water, metal talin, etc. (trade name).
A liquid (17) is stored.

(18) is an on-off valve provided in the middle of the first branch pipe (12), and is connected to a rotary solenoid (20), which is a power device, via a link (19).

The rotary solenoid (20) is connected to the wiring (22) to the operation switch (21), such as the loading main switch of the input garbage loading device located inside the driver's seat (2) or the changeover switch of the engine's power extraction device. electrically connected through
When the operation switch (21) is turned on, the link (1
9), close the on-off valve (18) and press the operation switch (2).
1), the on-off valve (18) is opened via the link (19).

Next, the flow of exhaust gas during traveling and work in the exhaust system having the above configuration will be explained.

First, when driving, the operation switch (21) is turned OFF.
Since the on-off valve (18) is open in the F state, the exhaust gas discharged from the exhaust muffler (10) to the exhaust pipe (11) mainly flows into the first branch pipe (12). 1
It is discharged from the tip of the branch pipe (12) to the lower right side of the vehicle body, where it quickly disperses and becomes diluted in the atmosphere. On the other hand, a small amount of the exhaust gas that has flowed into the second branch pipe (13) flows into the separation device (14) and the outer cylinder (14) of this separation device (14).
While rotating along the inner wall surface of a), this swirling movement separates harmful components such as graphite and flows into the lower conical part, where the flow gradually changes to an upward flow and passes through the upper inner cylinder (14b) into the discharge pipe. (14c) is discharged into the atmosphere with most of the harmful components such as graphite removed. Harmful components such as graphite separated from the exhaust gas by the separator (14) are then passed from the lower end of the outer cylinder (14a) of the separator (14) through the communication pipe (16) to the wet collection tank (15) due to their own weight. The liquid (17
).

Next, during work, the operation switch (21) is turned on.
state and the on-off valve (18) is closed, all the exhaust gas discharged from the exhaust muffler (10) to the exhaust pipe (11) flows into the second branch pipe (13), It flows into the separator (14) through the pipe (13), where harmful components such as graphite are separated and removed and discharged into the atmosphere from the discharge pipe (14c). Therefore, the exhaust gas emitted contains almost no harmful components such as graphite, which helps improve the working environment for workers and does not pollute the atmosphere.

The above has shown one embodiment of the present invention, and the present invention is not limited to this embodiment, but can be modified within the gist of the invention. For example, in the embodiment, the exhaust pipe (11) is connected to the first branch pipe (12) and the second branch pipe (1
3) When traveling, the first and second branch pipes (12)
(13), but the exhaust pipe (11) is not branched and its tip is connected to the separation device (14) to separate the exhaust gas during driving and work. The device (14) may separate and remove harmful components such as graphite before discharging. However, even if exhaust gas containing harmful components such as graphite is emitted while driving, there is no problem as it is quickly dispersed and diluted into the atmosphere. If the exhaust gas is discharged from the first branch pipe (12) while containing
The liquid (17) stored in the wet collection tank (15) can be consumed less.

[Effects of the Invention] According to this invention, harmful components such as graphite are removed from the exhaust gas emitted during work, so it is useful for improving the working environment of the workers and is extremely effective for the health of the workers. At the same time, it can prevent air pollution and exhibit excellent properties as an exhaust system for this type of work vehicle.

[Brief explanation of drawings]

FIG. 1 is a schematic explanatory diagram showing an exhaust system for a working vehicle according to the present invention. FIG. 2 is a bottom view of a work vehicle equipped with a conventional exhaust bag holder. (10) One exhaust muffler (IIL-exhaust pipe, (12)
L-11 first branch pipe, (13) first and second branch pipe,
(14) -11 separation device, (15: l-wet collection tank, (16: l- continuous pipe, (17) solid fluid, (1B) 1-11 on-off valve, (19)
1 link, (20)-11 rotary solenoid,
(21L-11 operation switch. Patent applicant: Morita Tokushu Kiko Co., Ltd.)
(Mr. Shogo Ebara)

Claims (2)

[Claims] (1) A separator consisting of a tangential flow type cyclone is connected to the tip of the exhaust pipe led out from the exhaust muffler, and the lower part of this separator has the effect of attaching and collecting harmful components such as graphite contained in the exhaust gas. An exhaust system for a work vehicle characterized by being provided with a wet collection tank in which liquid is stored. (2) The exhaust pipe led out from the exhaust muffler is branched, one of which is opened at the lower left side of the vehicle body, and an on-off valve is installed in the middle that opens when driving and closes when working, and the other is separated by a tangential flow type cyclone. A work vehicle, which is connected to a device and is equipped with a wet collection tank in the lower part of the separation device that stores a liquid that has the effect of collecting and collecting harmful components such as graphite contained in exhaust gas. exhaust system.