JPH068096Y2 - Dust collection device - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention temporarily stores dust generated from homes in a dust storage container through an input pipe, and includes a suction device for the stored dust. The present invention relates to a dust collecting device that sucks and collects with a garbage truck.

(Prior Art) Conventionally, as this type of dust collecting apparatus, Japanese Patent Laid-Open No. 1-19
The one described in Japanese Patent No. 7205 is provided by the present applicant.

This dust collection device temporarily stores the dust that has been input from the input port in the dust storage container via the input pipe, and the stored dust is connected to the communication pipe from the discharge port of the dust storage container by the suction device of the dust collection vehicle. It is configured to be sucked and collected into the dust storage chamber of the dust collection vehicle via the.

(Problems to be solved by the invention) However, in the above-mentioned conventional one, dust is easily clogged around the discharge port of the dust storage container or the transport pipe during dust collection by suction, and when dust is clogged, it is manually clogged. There is a problem that it is necessary to remove the object (dust), it is time-consuming, and it may come in contact with dirty dust, which is not preferable in terms of hygiene.

(Means for Solving the Problem) In the dust collecting apparatus of the present invention, the charging pipe provided with a charging port is first.
An intake pipe for connecting outside air to the inside is connected via an opening / closing valve, is connected via a second opening / closing valve, and a transportation pipe serving as a transportation path for transporting the dust accumulated inside is opened / closed by the third opening / closing valve. A dust storage container connected via a valve, a dust storage chamber to which the transport pipe is connected, and a dust collection vehicle equipped with a suction device for depressurizing the inside of the dust storage container, and the dust storage by the suction device. A negative pressure inside the container, by introducing outside air into the dust storage container from the intake pipe in a negative pressure state, in the dust collection device for suction collecting dust collected in this dust storage container in the dust storage chamber, A first pressure detection device is provided for detecting that the pressure in the dust storage chamber has become a negative pressure state equal to or lower than a preset first set pressure, and a second setting in which the pressure in the dust storage chamber is preset. High pressure above pressure A second pressure detecting device for detecting that the air has been discharged is provided, and on the other hand, the suction device is provided with a pressure feeding means for feeding air to the dust storage container side through the dust storage chamber for a predetermined period of time. The pressure feeding means is operated based on the detection of the detection device, and the release of the dust by the pressure feeding means is recognized based on the detection of the second pressure detection device.

(Operation) When the dust is sucked and collected, if the dust is clogged with a transport pipe, etc., the dust containing chamber becomes a negative pressure (vacuum), so the pressure in the dust containing chamber is a negative pressure equal to or lower than a preset pressure. The first pressure detection device detects this when the pressure is reached. As a result, air is pressure-fed for a predetermined time to the transportation pipe and the dust storage container side through the dust storage chamber by the pressure feeding means provided in the suction device, and the clogged dust is released by applying pressure from the dust storage chamber side.

Further, the second pressure detecting device recognizes whether or not the dust has been released by the pressure feeding means, and the next process is quickly performed based on the recognition result.

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

FIG. 1 shows a schematic structure of a dust collecting apparatus according to the present invention.

The refuse collecting device temporarily stores the refuse generated from the home in the refuse storing container 10 (hereinafter, simply referred to as the container 10), and the suction device 3 mounted on the refuse collecting vehicle 30 stores the collected refuse.
1 is configured to be sucked and collected in the dust collection chamber 33 of the dust collection truck 30.

The container 10 has an opening 11 formed on the top surface thereof, and the lower end of a chute (feeding pipe) 1 vertically arranged over each floor of the building is connected to the opening 11 continuously. The chute 1 is provided with an inlet 2 on a required floor. And
A first opening / closing valve 13 for opening / closing the opening 11 is provided in the opening 11, and the first opening / closing valve 13 is opened / closed by expansion / contraction of the air cylinder 15. In addition, this first on-off valve 13
A detector (not shown) such as a limit switch for detecting the opening / closing of the first opening / closing valve 13 is provided in the vicinity of.

Further, an intake port 16 is formed on the side wall of the container 10 slightly below the side wall. A base end of an intake pipe 17 is connected to the intake port 16, and a front end of the intake pipe 17 is arranged so as to supply outside air into the container 10. The intake pipe 17 is provided with a second opening / closing valve 18 for opening / closing the intake pipe 17, and the second opening / closing valve 18 is opened / closed by expansion / contraction of the air cylinder 20.

A detector (not shown) such as a limit switch for detecting opening / closing of the second opening / closing valve 18 is provided near the second opening / closing valve 18.

Further, a discharge port 21 is formed in the lower portion of the side wall of the container 10, and the discharge port 21 is connected to the communication pipe 23 via a funnel-shaped connecting member 22. Outlet 2
The communication pipe 23 in the vicinity of 1 has a third opening for opening and closing the communication pipe 23.
An on-off valve 25 is provided, and the third on-off valve 25 is opened and closed by expanding and contracting the air cylinder 26. A detector (not shown) such as a limit switch for detecting opening / closing of the third opening / closing valve 25 is provided near the third opening / closing valve 25.

Further, the container 10 is provided with a pressure gauge VS for measuring the pressure in the container 10 and a level sensor LV for detecting the storage level of dust in the container 10.

The communication pipe 23 is extended to the docking station 39, and is detachably connected to the suction hose 32 extended from the refuse collection vehicle by a coupling 38. The communication pipe 23 and the suction hose 32 constitute a transportation pipe for transporting the dust in the dust storage container 10 to the dust storage chamber 33.

Each of the air cylinders 15, 20, and 26 is connected to a branch end of an air hose 12 shown by a broken line in the drawing, and a joined base end of the air hose 12 is extended to a docking station 39 so that a dust collecting vehicle 30 can be installed. An air hose 34 extending from an air source (not shown) provided is detachably connected via a coupling 35.
These air cylinders 15, 20, 26 are the air hoses 12
The solenoid valve (not shown) interposed at each branch end is expanded and contracted to open and close the first to third on-off valves 13, 18, 25. The air source may be provided on the container 10 side.

The garbage truck 30 includes a suction device 31 and the suction device 31.
And a dust-storing chamber 33 that stores the dust that has been sucked by.

The suction device 31 is mounted on the front portion of the vehicle frame, and the dust storage chamber 33 communicating with the suction device 31 is mounted on the rear portion of the vehicle frame. The dust storage chamber 33 is configured to be attachable / detachable to / from the suction device 31, and its lower rear portion is pivotally supported by the vehicle frame and tiltable about this pivotal support portion. A base end of the suction hose 32 is connected to an upper portion of the dust storage chamber 33, and a tip of the suction hose 32 is suspended from a rear portion of the dust storage chamber 33. The base end of the suction hose 32 is configured to be rotatable, and the distal end of the suction hose 32 can be easily connected to the docking station 39 by rotating the suction hose 32.

FIG. 2 is a piping diagram showing the operation system of the suction device 31.

In FIG. 2, reference numeral 40 is a blower, and a suction pipe 41 connected to the dust storage chamber 33 is provided on the suction side 40a of the blower 40.
Is connected via a valve 42 and a blower 40
The discharge side 40b of the exhaust port 43 whose one end communicates with the outside air
The discharge pipe 43 formed in a is connected via a valve 44. Further, one end of a first bypass pipe 45 in which a valve 46 is interposed is connected to the suction pipe 41 between the valve 42 and the dust storage chamber 33, and the other end of the first bypass pipe 45 is between the valve 44 and the blower 40. Of the discharge pipe 43.
Further, one end of a second bypass pipe 47 in which a valve 48 is interposed is communicated with the suction pipe 41 between the valve 42 and the blower 40, and the other end of the second bypass pipe 47 is closer to the exhaust port 43a than the valve 44. Of the discharge pipe 43. 5
Reference numerals 0 and 51 are first and second pressure switches for detecting the pressure in the dust storage chamber 33. The first pressure switch (first pressure detection device) 50 has a negative pressure equal to or lower than a first set pressure A (lower than a pressure value during normal suction and collection of dust, for example, -4500 mmAq) set in the dust storage chamber 33 in advance. The pressure detection device of the present invention is configured to detect that a pressure is applied. The second pressure switch (second pressure detection device) 51 is
It detects that the inside of the dust storage chamber 33 is in a high pressure state equal to or higher than a preset second set pressure B (for example, +4500 mmAq). These first and second pressure switches 50, 5
The detection signal detected in 1 is input to a control device (not shown) provided in the garbage truck 30.

The control device is composed of a microcomputer or the like, controls the drive of the blower 40 based on the detection signals of the first and second pressure switches 50 and 51, and controls the valves 42, 44, 46, and
It controls the opening and closing of 48. That is, the valves 42 and 44 are controlled to be open and the valves 46 and 48 are controlled to be closed during normal suction collection, and the valve 42 is detected when the first pressure switch 50 detects that the inside of the dust storage chamber 33 is in a negative pressure state. , 44 are closed and valves 46, 48 are opened. By closing the valves 42 and 44 and opening the valves 46 and 48 in this manner, the blower 40 sucks air from the exhaust port 43a of the discharge pipe 43 through the second bypass pipe 47 and opens the first bypass pipe 45. After that, air is pressure-fed from the dust storage chamber 33 to the container 10 side, which constitutes a pressure-feeding means.

Reference numeral 52 in FIG. 2 is a silencer provided in the discharge pipe 43. Although not shown, a war task rubber, a cyclone, or the like is provided in an appropriate place of these pipes.

In addition, the control device includes each detector provided in the container 10,
Detection signals from the pressure gauge VS and the level sensor LV are input, and in the control device, based on the detection signals from the detectors, the pressure gauge VS, and the level sensor LV, the signal cable 3
6, the container 37 via the connector 37 and the signal cable 27
An operation signal is output to each of the air cylinders 15, 20, and 26 to control the opening and closing of the on-off valves 13, 18, and 25.

Further, the refuse collection vehicle 30 is provided with a control panel 39 including an operation switch section and a display section. The control panel 39 may be provided on the driver side.

Next, the operation of the dust collecting apparatus configured as above will be described.

The dust thrown in from the charging port 2 is stored in the container 10 via the chute 1.

When collecting dust from the container 10 to the garbage truck 30, first, the garbage truck 30 is stopped near the docking station 39, and the suction hose 32, the signal cable 36, and the air hose 34 of the garbage truck 30 are removed. , The communication pipe 23 arranged at the docking station 39, the signal cable 27, the coupling 35 to the air hose 12,
38 and the connector 37.

Next, the blower 4 in which the start switch of the suction device 31 is turned on with the valves 42 and 44 open and the valves 46 and 48 closed.
0 is operated, and the operation of the blower 40 causes the container 10
The air inside the exhaust port 21, the communication pipe 23, the suction hose 32,
Dust storage chamber 33, suction pipe 41, blower 40, discharge pipe 43
Through the exhaust port 43a. At this time, the container 10 closes the first opening / closing valve 13 to close the opening 11, and closes the second opening / closing valve 18 to close the intake pipe 17,
In addition, the third on-off valve 25 is opened, and the air in the container 10 is sucked in by the blower 40 as described above to depressurize the container 10 and the pressure value in the container 10 is set in advance. Set value (for example, about -3500 mm
When it becomes aq), the second opening / closing valve 18 is opened to allow outside air to flow into the container 10 through the intake port 16 of the intake pipe 17. As a result, the air flowing from the intake port 16 swirls in the container 10 and flows from the discharge port 21 to the dust storage chamber 33 side through the communication pipe 23 and the suction hose 32. As a result, dust in the container 10 The dust is sucked and collected in the dust storage chamber 33 through the discharge port 21, the communication pipe 23, and the suction hose 32. Then, the second on-off valve 18 is closed when the pressure in the container 10 becomes atmospheric pressure or when a predetermined suction time elapses. After that, by repeating the above-described operation a suitable number of times, the dust in the container 10 can be sucked and collected in the dust storage chamber 33.

During this suction collection, dust is discharged from the discharge port 21 of the container 10.
When it is clogged around, the communication pipe 23, and the suction hose 32, if the suction by the blower 40 is continued in this state, the pressure in the dust storage chamber 33 decreases. When the pressure in the dust storage chamber 33 becomes equal to or lower than the first set pressure A, the first pressure switch 50 detects this and inputs this detection signal to the control device. That is, by detecting that the pressure in the dust storage chamber 33 has become equal to or lower than the first set pressure A with the first pressure switch 50, the control device determines that the dust is clogged during suction collection, and the valves 42 and 44 are turned on. With closing
The valves 46 and 48 are opened, and at the same time, the first opening / closing valve 13 of the container 10 is opened and the second opening / closing valve 18 is closed. Therefore, the blower 40 sucks air from the exhaust port 43a of the discharge pipe 43 through the second bypass pipe 47, and passes through the first bypass pipe 45 from the dust storage chamber 33 to the suction hose 3
2. Air is pressure-fed into the communication pipe 23 and the container 10. By pumping air in this way, the suction hose 32 and the communication pipe 2
It is possible to release the dust that is clogged around 3 and the discharge port 21 of the container 10. This air feeding is continued for a certain period of time, and after the lapse of time, the valves 42 and 44 are opened, the valves 46 and 48 are closed, and the first on-off valve 13 and the second on-off valve 18 of the container 10 are closed as described above. Return to dust collection by suction.

Here, if the blockage due to the dust is not released even when the air is pumped, the dust storage chamber 3 at the end of the pneumatic pumping
Since the pressure in 3 is high, the second pressure switch 51 detects this. That is, if it is detected by the second pressure switch 51 after a lapse of time (the dust storage chamber 3
If the pressure in 3 is equal to or higher than the second set pressure B), it means that the dust is not released, and if it is not detected by the second pressure switch 51 after the elapse of time (the pressure in the dust storage chamber 33 is If the pressure is equal to or lower than the second set pressure B), it means that the blockage due to dust is released.

Then, when the pressure in the dust storage chamber 33 becomes equal to or higher than the second set pressure B after a lapse of time, the second pressure switch 51 detects this and performs suction operation again, and the dust storage chamber 33 When the pressure becomes equal to or lower than the first set pressure A, air is similarly fed under pressure. This operation is repeated several times (for example, 5 times)
When it is repeated, that is, when the second pressure switch 51 operates several times in succession within a predetermined time, or the first pressure switch 50 and the second pressure switch 51 operate alternately several times in succession. In that case, it is determined that the dust cannot be released, the operation of the blower 40 is stopped, and the dust is manually released.

(Effect of the Invention) As described above, according to the dust collecting apparatus of the present invention, when the dust is absorbed and collected from the dust storage container, if the dust is clogged around the discharge port of the dust storage container or the transport pipe, (1) The pressure detecting device detects this and operates the pressure feeding means to release the clogging by the dust, and the second pressure detecting device can recognize whether or not the dust is released by the pressure feeding means. Can be automatically performed based on a quick and accurate judgment, and the dust collecting operation can be performed smoothly.

[Brief description of drawings]

FIG. 1 is a side view showing a schematic configuration of a dust collecting apparatus according to the present invention, and FIG. 2 is a piping diagram showing an operation system of a suction apparatus. DESCRIPTION OF SYMBOLS 1 ... Chute (input pipe) 2 ... Input port 10 ... Dust storage container 13 ... First opening / closing valve 17 ... Intake pipe 18 ... Second opening / closing valve 25 ... Third opening / closing valve 31 ... Suction device 23 ... Communication pipe (transport pipe) 32 ... Suction hose (transport pipe) 33 ... Dust storage chamber 50 ... First pressure switch (pressure detection device)

Claims (1)

[Scope of utility model registration request] 1. A dust pipe that is connected to a charging pipe having a charging port through a first opening / closing valve, an intake pipe that takes in outside air through the second opening / closing valve, and is stored inside. A waste storage container to which a transport pipe serving as a transport path for transporting the waste is connected via a third opening / closing valve, a dust storage chamber to which the transport pipe is connected, and a suction device for depressurizing the interior of the dust storage container. It is composed of a garbage collection vehicle provided, and the inside of the garbage storage container is negatively pressured by the suction device, and the outside air is introduced into the dust storage container from the intake pipe in a negative pressure state, so that the dust is stored in this waste storage container. In a dust collecting device for sucking and collecting dust in a dust containing chamber, a first pressure detecting device is provided for detecting that the pressure in the dust containing chamber is in a negative pressure state below a preset first set pressure. At the same time, the pressure in the dust storage chamber A second pressure detection device for detecting a high pressure state equal to or higher than a second preset pressure set in advance is provided, while the suction device supplies air to the dust storage container side through the dust storage chamber for a predetermined time. A pressure-feeding means for pressure-feeding is provided, and the pressure-feeding means is operated based on the detection by the first pressure detection device, and the release of dust by the pressure-feeding means is recognized based on the detection by the second pressure detection device. A dust collection device characterized by being processed.