JP2501964B2 - Waste suction transportation method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction device for sucking dust in a vessel storing dust to introduce secondary air and transporting the dust in the vessel to a dust storage tank through a communication pipe. Regarding the transportation method, it is particularly suitable for suction transportation of dust having a large specific gravity such as kitchen waste having a high water content.

[0002]

2. Description of the Related Art As a conventional dust suction / transportation method, as described in Japanese Patent Laid-Open No. 222212/1990, after the inside of a vessel is negatively pressurized to a predetermined negative pressure value, the dust of the vessel is put into the vessel. While introducing the secondary air from a direction substantially orthogonal to the discharge direction, the secondary air is also introduced from the dust inlet provided at the top of the vessel, and the negative pressure value in the vessel is reduced by the introduction of these secondary air. When the pressure reaches a predetermined negative pressure value, the process of reducing the pressure inside the vessel again is repeated a predetermined number of times, whereby the suction pattern as shown in FIG. 7 causes the dust in the vessel to pass through the transport pipe to the dust storage tank. I was supposed to transport it.

[0003]

However, the above conventional method is effective for dust having a small specific gravity, but when transporting dust having a large specific gravity such as kitchen dust having a high water content. However, no matter how many times the above suction pattern is repeated, the dust in the vessel cannot be completely loosened, and the dust cannot be smoothly discharged from the vessel to the transport pipe, which causes a problem that dust remains in the vessel.

[0004]

According to the method for sucking and transporting dust of the present invention, the inside of the vessel storing the dust is made to have a negative pressure and then the secondary air is introduced, and the dust in the vessel is passed through the communication pipe. In the dust suction transportation method of transporting to the storage tank,
First, after depressurizing the inside of the vessel to a first set negative pressure value at which dust can be suction-transported, secondary air is introduced into the vessel in a direction substantially orthogonal to the direction of discharging the debris of the vessel. When the negative pressure value in the vessel decreases due to the introduction of the next air and reaches the second set negative pressure value, the step of reducing the negative pressure in the vessel to the first set value again is performed at least once, and then the vessel is set in the vessel. The secondary air is introduced in the direction of discharging the dust to suck and transport the dust in the vessel.

Further, in the dust suction and transportation method of the present invention, the inside of the vessel storing the dust is made negative pressure, secondary air is introduced, and the dust in the vessel is transported to the dust storage tank via the communication pipe. In the dust suction / transport method described above, first, the inside of the vessel is depressurized to a first set negative pressure value at which dust can be sucked and transported, and then the vessel is moved into the vessel from a direction substantially orthogonal to the direction of discharging the dust. The step of introducing secondary air, and reducing the negative pressure value in the vessel by the introduction of the secondary air to reach the second set negative pressure value, again making the inside of the vessel negative to the first set value is executed at least once. After that, the secondary air is introduced in a direction substantially orthogonal to the dust discharge direction of the vessel, and the secondary air is introduced in the dust discharge direction of the vessel to suck and transport the dust in the vessel.

[0006]

After the treatment of loosening and sucking the dust in the vessel is repeated a predetermined number of times, finally, the secondary air is simultaneously introduced from the first secondary valve and the second secondary valve to suck and transport the dust in the vessel. As a result, it is possible to smoothly suck and transport dust having a large specific gravity such as kitchen waste having a high water content.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a schematic structure of a dust suction / transport device for carrying out the dust suction / transport method of the present invention.

The dust suction / transport device temporarily stores the dust generated from the home in the vessel, and the collected dust is sucked and collected by the suction unit 30 in the dust storage tank 40 mounted on the dust suction vehicle C, for example. It is composed.

Each of the vessels has a T of the same construction.
A suitable number of _{1 to} Tm are buried under the housing complex or building, for example, and in this example, one of the vessels, Tm, will be described.

The vessel Tm has an opening 11 formed on the top surface thereof, and the lower end of a chute Am vertically arranged on each floor of the building is connected to the opening 11 continuously. The chute Am is provided with an input port Bm at a required floor.

The opening 11 is provided with a closing gate Im for opening and closing the opening 11. The closing gate Im is opened and closed by the expansion and contraction of the air cylinder 12. Further, a detector (not shown) such as a limit switch for detecting opening / closing of the closing gate Im is provided near the closing gate Im.

A discharge port 13 is provided below the side wall of the vessel Tm.
Is formed, and the discharge port 13 is connected to a connecting pipe 15 that forms a part of the transport pipe via a connecting member 14 formed in a funnel shape. Connection pipe 15 near the outlet 13
Is provided with a discharge gate Em that opens and closes the connection pipe 15. The discharge gate Em is opened and closed by expansion and contraction of the air cylinder 16. A detector (not shown) such as a limit switch for detecting opening / closing of the discharge gate Em is provided near the discharge gate Em.

A first secondary air inlet 20 is formed in the lower portion of the side wall of the vessel Tm so as to be substantially orthogonal to the outlet 13. The first secondary air inlet 20 has a first
One end of the introduction pipe 21 is connected, and the other end of the first introduction pipe 21 is arranged so as to be able to supply the outside air into the vessel Tm. That is, the secondary air can be introduced into the vessel Tm from the first introduction pipe 21 in a direction substantially orthogonal to the dust discharge direction of the vessel Tm. The first inlet pipe 21 has a first secondary valve 1Vm for opening and closing the first inlet pipe 21.
Is provided, and the first secondary valve 1Vm is an air cylinder 2
It is opened and closed by the expansion and contraction of 2. A detector (not shown) such as a limit switch for detecting opening / closing of the first secondary valve 1Vm is provided near the first secondary valve 1Vm.

Further, a second secondary air inlet 25 is formed on the side wall of the vessel Tm at a position facing the outlet 13. The second introduction pipe 2 is provided in the second air introduction port 25.
6 is connected to one end, and the other end of the second introduction pipe 26 is arranged so as to be able to supply the outside air into the vessel Tm. That is, the secondary air can be introduced through the second introduction pipe 26 in the direction of discharging dust in the vessel Tm. The second introduction pipe 26 is provided with a second secondary valve 2Vm for opening and closing the second introduction pipe 26.
The m is opened and closed by the expansion and contraction of the air cylinder 27.
A detector (not shown) such as a limit switch for detecting opening / closing of the second secondary valve 2V is provided near the second secondary valve 2Vm.

The connecting pipe 15 is extended to the docking station 60 and is detachably connected to the suction pipe 50 extended from the dust suction wheel C by a coupling 61. That is, the connecting tube 15 and the suction tube 50 connect the vessel Tm.
A transport pipe for transporting the waste of (1) to the waste storage tank 40 is configured.

The air cylinders 12, 16 and 2 are also provided.
2, 27 are connected to an air source (not shown) provided in the dust suction vehicle C via the docking station 60 by an air hose (not shown). The air source may be provided on the vessel Tm side.

The dust suction car C has a suction unit 30.
And a dust storage tank 40 for storing the dust sucked by the suction unit 30.

The suction unit 30 has a suction passage 31, one end of which is connected to the dust storage tank 40 and the other end of which is open to the atmosphere, a water scrubber 32 provided in the suction passage 31, and a blower. Suction device 33 provided in suction passage 31 on the atmosphere open side with respect to scrubber 32
And a muffler 35 provided in the suction passage 31 on the atmosphere open side of the suction device 33. The suction device 33 is configured to negatively pressure the dust storage tank 40 and each of the vessels T _{1 to} Tm. ing.

A pressure detection device 70 is provided on the suction side of the suction device 33. The dust storage tank 40 has an opening / closing door 41 whose rear end wall opens rearward around the upper edge of the dust storage tank 40 when the dust storage tank 40 is discharged.
The garbage inside is thrown away behind the vehicle.

The suction pipe 50 is used for the waste container 4 described above.
At the upper part of 0, a swirl pipe 51 connected to the dust storage tank 40 and rotatably provided around a vertical axis, a flexible pipe 52 connected to the swirl pipe 51, and a flexible pipe 52 are connected. In addition, an undulating pipe 53 provided so as to be capable of undulating, an extensible pipe 55 connected to the undulated pipe 53, a flexible pipe 56 connected to the extensible pipe 55, and a tip end portion connected to the flexible pipe 56. 57. Reference numeral 58 denotes a support member for supporting the distal end portion 57, and reference numeral 59 denotes a support frame for supporting the undulating tube 53.

Therefore, at the time of collecting dust, the dust suction wheel C is brought closer to the docking station 60 and stopped, and is sucked by the turning movement of the swivel tube 51, the hoisting movement of the undulating tube 53, the telescopic movement of the telescopic tube 55, etc. Tip portion 57 of tube 50
Can be easily connected to the docking station 60, which allows the waste container 40 and the vessels T _{1 to} Tm to communicate with each other via the connecting pipe 15.

Further, the information signal detected by the pressure detecting device 70 is inputted to a control device (not shown) provided in the dust suction car C.

Further, the pressure detecting device 7 is included in the control device.
In addition to the information signal detected at 0, each of the vessels T _{1 to} Tm
The detection signals from the respective detectors provided in the are input by a signal cable (not shown) connected via the docking station 60. In the control device, the information signal of the pressure detection device 70 and the respective detectors Based on the detection signal of each air cylinder 12, _{1 of} each vessel T _{1 to} Tm
An operation signal is output to 6, 22, and 27, and the closing gate Im,
Discharge gate Em, first secondary valve 1Vm, second secondary valve 2Vm
Control the opening and closing of.

Next, a dust suction / transport method using the dust suction / transport device configured as described above will be described with reference to the flowcharts of FIGS. 2 to 5.

First, in step S1, each input gate I ₁
With opening a to IM, the discharge gate E ₁ ~Em, the first secondary valve 1V ₁ ~1Vm, and each of the second secondary valve 2V ₁ to 2
Vm is closed, and in this state, the dust thrown in from each household or the like passes through the shoots A _{1 to} Am to the vessel T ₁
~ Tm, respectively.

When starting the suction and transport of dust, the dust suction wheel C is stopped near the docking station 60, and the suction pipe 50 of the dust suction wheel C and the connecting pipe 15 are connected via the docking station 60. At the same time, the air cylinders 12, 16, 22, 27 and the air source of the dust suction vehicle C are connected by an air hose via the docking station 60, and each detector and each air cylinder 1 is connected.
2, 16, 22, 27 and the control device of the dust suction truck C are connected via a docking station 60 by a signal cable.

Then, in step S2, an arbitrary vessel T
The subscript m of m is set to 0, and m is incremented by 1 in step S3. With this, the vessel to be controlled becomes T ₁ for the _first time, and from the next time onward, T ₂ , T ₃ ... Then, the input gate Im of the vessel Tm is closed in step S4, the discharge gate Em is opened in step S5, and the suction device 33 is turned on in step S6 to start air suction. Then, in step S7, the vessel Tm
The number of times j of the suction cycle has been set to 0, and j is incremented by 1 in step S8. Next, in step S9, the opening / closing number i of the first secondary valve 1Vm is set to 0,
In step S10, i is incremented by 1.

Thereafter, in step S11, it is judged whether or not the negative pressure value PN exceeds the first set negative pressure value Pa, and when air suction progresses and PN> Pa, the first secondary valve 1Vm is obtained in step S12. open. As a result, secondary air is introduced from the first introduction pipe 21 into the vessel Tm in a direction substantially orthogonal to the dust discharge direction of the vessel Tm, and the introduced secondary air swirls in the vessel Tm while rotating. Flows into the connecting pipe 15 from the outlet 13. At this time, Vessel T
The negative pressure value within m suddenly drops, and when the negative pressure value PN falls below the second set negative pressure value Pb and PN <Pb in step S13, the first secondary valve 1Vm is closed in step S14.
Due to the operation of steps S11 to S14, the vessel Tm
The dust inside is loosened, and part of the dust is sucked into the connecting pipe 15.

Next, in step S15, the first secondary valve 1Vm
It is determined whether the number i of opening and closing of is 2 and i = 2 for the first time.
Therefore, the process returns to step S10 and the above-mentioned step S
11 to S14 are performed, and the dust in the vessel Tm is loosened again and the dust is sucked into the connecting pipe 15. Then, again in step S15, it is determined whether or not the number of times of opening / closing i of the first secondary valve 1Vm is 2, and this time i = 2, so step S16
In step S16, it is determined whether or not the negative pressure value PN exceeds the first set negative pressure value Pa, and air suction proceeds,
When PN> Pa, in step S17, the second secondary valve 2V
open m. As a result, the secondary air is introduced from the second introduction pipe 26 in the direction of discharging the dust in the vessel Tm, and the introduced air loosens the dust in the vessel Tm from the discharge port 13 via the transportation pipe to store the dust therein. It is housed in the tank 40. At this time, the negative pressure value suddenly falls in the vessel Tm, and the negative pressure value PN is changed to the third set negative pressure value Pc in step S18.
When PN <Pc is reached, the second secondary valve 2Vm is closed in step S19.

Next, in step S20, it is determined whether or not the number j of times the suction cycle of the vessel Tm has elapsed is 2. Since the first time is not j = 2, the process returns to step S8 and the above steps S8 to S19 are performed again. Then, again in step S20, it is determined whether or not the number j of times of the suction cycle of the vessel Tm is 2, and since j = 2 this time, step S21
Proceed to. Then, when the air suction progresses and PN> Pa in this step S21, the first secondary valve 1V is set in step S22.
After opening m, the secondary air is introduced into the vessel Tm from the first introduction pipe 21 in a direction substantially orthogonal to the dust discharge direction of the vessel Tm as described above. Then, when the negative pressure value in the vessel Tm decreases and the negative pressure value PN falls below the second set negative pressure value Pb in the step S23 and PN <Pb, the first secondary valve 1Vm is closed in step S24. Next, in step S24, the first secondary valve 1Vm is closed, and when air suction progresses, it is determined in step S25 again whether or not the negative pressure value PN exceeds the first set negative pressure value Pa, and PN> Pa Then, in step S26, this time the first secondary valve 1Vm and the second secondary valve 2V
Open m and together. As a result, secondary air is introduced into the vessel Tm from the first introduction pipe 21 and the second introduction pipe 26,
Garbage storage tank 4 for all the dust left in the vessel Tm
Aspirate to 0.

Thereafter, the negative pressure value in the vessel Tm is found, and the negative pressure value PN is changed to the third set negative pressure value Pc in step S27.
When PN <Pc, the discharge gate Em, the first secondary valve 1Vm, and the second secondary valve 2 are discharged in step S28.
Vm is closed, and the process proceeds to suction of dust from the next vessel Tm. That is, in step S29, the subscript m of Bessel Tm
Is the final number, and if it is not the final number, the process returns to step S3 and the above-described processing is repeated for the next numbered Bessel Tm. On the other hand, when the number is the final number, the process proceeds to step S30 to turn off the suction device 33 and stop the air suction.

That is, the dust is sucked and transported by the suction pattern as shown in FIG.

As described above, after repeating the process of sucking the dust in the vessel Tm while loosening the dust a predetermined number of times, finally the secondary air is simultaneously introduced from the first secondary valve 1Vm and the second secondary valve 2Vm, and the vessel is By sucking the dust in Tm,
Even dust having a high specific gravity such as kitchen waste having a high water content can be smoothly sucked and transported from the vessel Tm to the dust suction tank, and the dust remaining in the vessel Tm can be prevented.

[0035]

As described above, according to the dust suction / transporting method of the present invention, after the process of sucking dust in the vessel while sucking the dust is repeated a predetermined number of times, the dust is finally discharged substantially orthogonal to the vessel. The secondary air is introduced in the direction of the vessel and the secondary air is introduced in the direction of discharging the dust in the vessel to suck and transport the dust in the vessel. Therefore, it has a large specific gravity such as garbage with a high water content. Even for dust, the suction and transport of dust from the vessel to the dust storage tank can be performed smoothly, and it is possible to prevent dust from remaining in the vessel.

[Brief description of drawings]

FIG. 1 is a side view showing a schematic configuration of a dust suction / transport device for carrying out the dust suction / transport method of the present invention.

FIG. 2 is a flow chart diagram for explaining the dust suction / transport method of the present invention.

FIG. 3 is a flow chart diagram for explaining the dust suction / transport method of the present invention.

FIG. 4 is a flow chart diagram for explaining the dust suction / transport method of the present invention.

FIG. 5 is a flow chart for explaining the dust suction / transport method of the present invention.

FIG. 6 is a characteristic diagram showing a suction pattern according to the method of the present invention.

FIG. 7 is a characteristic diagram showing a conventional suction pattern.

[Explanation of symbols]

 13 Discharge port 40 Garbage storage tank Am Chute Em Discharge gate Im Discharge gate Tm Vessel 1Vm First secondary valve 2Vm Second secondary valve Pa First negative pressure setting Pb Second negative pressure setting Pc Third negative pressure setting

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuhiro Egashira 6-107 Takino-cho, Nishinomiya-shi, Hyogo Shinmeiwa Industry Co., Ltd. Development Technology Headquarters (72) Inventor Koichi Okamoto 6-107 Takino-cho, Nishinomiya-shi, Hyogo Shinmeiwa Industry Co., Ltd. (56) Reference JP-A 1-252404 (JP, A) JP-A 1-197205 (JP, A) JP-A 53-49867 (JP, A) JP-A 2-231301 (JP, A) JP-A-2-255401 (JP, A) JP-A-2-221003 (JP, A) JP-A-2-129311 (JP, A)

Claims (2)

(57) [Claims] 1. A method for sucking and transporting dust, wherein the inside of a vessel storing dust is negatively pressured, secondary air is introduced, and the dust in the vessel is transported to a dust storage tank through a communication pipe. After depressurizing the inside to a first set negative pressure value at which dust can be suction-transported, secondary air is introduced into the vessel from a direction substantially orthogonal to the direction of discharging the dust in the vessel, and the secondary air is introduced. As a result, the negative pressure value in the vessel decreases, and when it reaches the second set negative pressure value, the inside of the vessel is returned to the first pressure value again.
After performing the step of reducing the pressure to a set value at least once, secondary air is introduced into the vessel in the direction of discharging the dust of the vessel to suck and transport the dust in the vessel. Transportation method. 2. A method for sucking and transporting dust, wherein negative pressure is applied to a vessel storing dust and secondary air is introduced to transport the dust in the vessel to a dust storage tank through a communication pipe. After depressurizing the inside to a first set negative pressure value at which dust can be suction-transported, secondary air is introduced into the vessel from a direction substantially orthogonal to the direction of discharging the dust in the vessel, and the secondary air is introduced. As a result, the negative pressure value in the vessel decreases, and when it reaches the second set negative pressure value, the inside of the vessel is returned to the first pressure value again.
After performing the step of reducing the pressure to a set value at least once, the secondary air is introduced in a direction substantially orthogonal to the dust discharge direction of the vessel and the secondary air is introduced in the dust discharge direction of the vessel. A method for suctioning and transporting dust in a vessel by suctioning and transporting dust in the vessel.