JPH0738343Y2 - Air suction car - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial field of application The present invention makes a negative pressure in the tank by driving a blower, and sucks a suctioned material such as stones, empty cans, mud, and water into the tank. The present invention relates to an air volume suction wheel, and more particularly, to an air volume suction wheel that automatically discharges clean water separated from a suctioned material stored in a tank to the outside of the tank while performing suction work.

(B) Conventional Technique In a conventional air volume suction vehicle, a tank mounted on a vehicle body is provided with a suction pipe and a discharge pipe, and an opening / closing valve is provided in each of the pipes.

Then, the blower is driven to make the inside of the tank a negative pressure, the on-off valve of the suction pipe is opened, the suctioned substance is sucked into the tank from the suction pipe, and when the suctioned substance enters the tank to some extent, the on-off valve of the discharge pipe is opened. The drainage work of opening and discharging the clean water separated from the suctioned substances through the discharge pipe was performed at the same time as the suction work, and when the drainage work was completed, the on-off valve of the discharge pipe was closed and only the suction work was performed.

When the drainage work is required again, the on-off valve of the discharge pipe is opened to perform the drainage work and the suction work at the same time.

(C) Problems to be solved by the invention For this reason, it is necessary to open and close the opening / closing valve of the discharge pipe each time the drainage work is performed, which not only complicates the work but also lengthens the work time. There was a problem.

Therefore, the purpose of this invention is to simplify the work by shortening the working time by automatically performing the suction work and the drainage work at the same time without opening / closing the opening / closing valve of the discharge pipe for each drainage work. It is in.

(D) Means for Solving the Problems The present invention has been made to solve the above problems, and the inside of the tank mounted on the vehicle body is driven by a blower to make the inside of the tank a negative pressure, so that stones, cans, mud, etc. In an air volume suction wheel adapted to suck in a suctioned product such as water, the tank is provided with a discharge pipe for discharging clean water separated from the suctioned product,
A check valve that is opened by the water pressure of the clean water in the tank is interposed in the discharge pipe.

(E) Action When the blower is driven, the inside of the tank becomes a negative pressure, and suctioned substances such as stones, empty cans, mud, and water are sucked into the tank.

At this time, the check valve installed in the discharge pipe is closed due to the negative pressure in the tank.

During this suction work, when the suctioned substance is contained in the tank to some extent and the water level of the clean water separated from the suctioned product is above the discharge pipe, the check valve opens due to the water pressure of the clean water, and the clean water automatically It is discharged from the discharge pipe.

Then, the check valve whose water level is below the discharge pipe is closed and only suction work is performed.After that, when the water level of the clean water is above the discharge pipe, the check valve is opened. Drainage work is performed automatically while doing.

(F) Embodiment An embodiment of the present invention will be described below with reference to the drawings.

(1) is a vehicle body, and at the rear of the vehicle body (1), stones,
A tank (2) for storing suctioned substances such as empty cans, mud, and water is mounted, and a blower (3) for generating wind is mounted in the center of the vehicle body (1).

The tank (2) comprises a tank body (4) and an opening / closing lid (5) for opening and closing the rear end of the tank body (4). After the opening / closing lid (5) is rotated upward, When the main body (4) is tilted rearward, the suctioned substance in the tank (2) can be discharged.

A suction pipe (6) communicating with the inside of the tank (2) is provided under the opening / closing lid (5), and an opening / closing valve (7) is provided in the suction pipe (6). (8) is a discharge pipe provided on the side surface of the tank body (4). The discharge pipe (8) is composed of a pipe (9) attached to the tank body (4) and an opening / closing valve (10). A check valve (11) is interposed between 9) and the on-off valve (10).

The check valve (11) includes a casing (12) and an oscillating flapper (14) that opens and closes a communication passage (13) in the casing (12), and the flapper (14) is a tank (2). ) When a negative pressure is applied to the inside of the tank, it swings counterclockwise to close the communication passageway (13) and close the check valve (11), and the water level in the tank (2) is located above the pipe (9). Then, the water pressure of the clean water causes it to rock clockwise to open the communication passageway (13) and open the check valve (11).

Note that (15) is a suction hose attached to the on-off valve (7) when performing suction work, and (16) is when performing drainage work.
A discharge hose attached to the on-off valve (10).

Further, (17) is a chute fixed to the tank body (4).

Next, (18) is a check valve of another embodiment. This check valve (18) includes a casing (19) and this casing (1
9) Sliding valve body (2) that opens and closes the communication passage (20)
1) and a spring (23) for pressing the valve body (21) against the valve seat (22). Check valve (18)
When the pressure in the tank (2) is negative, the valve body (21) has a communication passage (20).
To close the check valve (18), and the water pressure of the clean water in the tank (2) causes the valve body (21) to slide to the left against the spring (23) force and open the communication passage (20). The check valve (18) is opened.

The present invention is constructed as described above, and its operation will be described below.

First, the suction hose (15) is connected to the open / close valve (7), and the discharge hose (16) is connected to the open / close valve (10).

Next, the blower (3) is driven to make the inside of the tank (2) a negative pressure, both opening / closing valves (7) and (10) are opened, and the suction hose (1
Move the other end of 5) to a suction object such as a stone, an empty can, mud, or water for suctioning.

As a result, it is possible to perform a suction operation in which a suction object such as stones, an empty can, mud, and water is stored in the tank (2) through the suction hose (15), the opening / closing valve (7) and the suction pipe (6).

At this time, the check valve (11) is as shown in FIG. That is, the flapper (14) of the check valve (11)
Since the left side is atmospheric pressure and the right side is negative pressure, the flapper (14) swings counterclockwise to close the communication passageway (13).

During the suction work, stones, empty cans,
When the suctioned material such as mud and water is contained to some extent, the tap water is easily separated from the stones and the empty can, and when the separated tap water is located above the pipe (9) as shown in FIG. The water pressure of the flapper (14) causes the flapper (14) to swing clockwise, the communication passage (13) is opened, and clean water passes through the pipe (9), check valve (11), open / close valve (10), and discharge hose (16). Is discharged.

When the water level of the clean water is below the pipe (9), the check valve (11) is closed and only suction work is performed. After that, when the water level of the clean water is above the pipe (9), the check valve ( 11) is opened and discharge work is performed.

In this way, it is possible to automatically perform drainage work at the same time while performing suction work.

At this time, if the amount of the suctioned substance sucked from the suction hose (15) is reduced, the negative pressure in the tank (2) is reduced, and the drainage work can be performed more quickly.

Next, when the suction work is completed, both on-off valves (7)
After closing (10) and stopping the blower (3), the suction hose (15) and the discharge hose (16) are removed from the on-off valves (7) and (10), respectively.

(G) Effect of the Invention As described above, according to the present invention, since the check valve that is opened by the water pressure of the clean water in the tank is provided in the discharge pipe provided in the tank, suction of stones, empty cans, mud, water, etc. Suction work for sucking objects and drainage work for draining tap water can be performed automatically at the same time without opening and closing the opening / closing valve of the discharge pipe for each draining work, which simplifies the work and shortens the work time. .

[Brief description of drawings]

FIG. 1 is a side view of the air suction wheel of the present invention, FIG. 2 is a cross-sectional view with the check valve closed, and FIG. 3 is a cross-sectional view with the check valve open.
FIG. 4 shows a check valve of another embodiment. (1) is the vehicle body, (2) is a tank, (3) is a blower,
(8) is a discharge pipe, and (11) is a check valve.

Claims (1)

[Scope of utility model registration request] 1. An air volume suction vehicle in which a tank mounted on a vehicle body is driven by a blower to create a negative pressure in the tank to suck in suctioned substances such as stones, empty cans, mud, and water.
An air volume suction vehicle in which a discharge pipe for discharging clean water separated from the suctioned matter is provided in the tank, and a check valve which is opened by the water pressure of the clean water in the tank is provided in the discharge pipe.