JPH0659922B2 - Garbage suction transport device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a dust suction / transport device for collecting dust by a dust collector or the like.

(Prior Art) Conventionally, for example, as a method of collecting garbage discharged from homes, (1) arranging a container for garbage in each housing complex or building, and throwing the garbage from each household into this container How to replace this container on a regular basis.

(2) A method of collecting garbage bags placed on the street with a garbage truck.

There is.

(Problems to be solved by the invention) However, in the case of "method (1)" above, users of households and the like carry garbage to the container, and on the way, the garbage is dropped on the road to impair environmental hygiene. There's a problem. Moreover, because of the convenience of container replacement, the container is placed outdoors near the road, so that a foul odor emitted from the container may drift to the living space.

Further, in the case of the above "(2) method", the garbage bag is placed directly on the road, which impairs environmental hygiene.

The present invention has been made paying attention to such a point,
The purpose is to keep dust in a space that is shielded from the outside world, and when collecting dust, use negative pressure to suck it into the dust suction truck through the communication pipe and collect it to maintain good environmental hygiene. However, it is to collect garbage surely.

In order to achieve the above object, in the present invention, the waste is stored in a waste centralized storage device having a plurality of vessels corresponding to each building, and the waste storage tank mounted on the waste suction vehicle and each vessel are transported. Connected via pipes and their branch pipes, each branch pipe is equipped with an on-off valve, and when collecting dust,
With the on-off valve of one vessel open and the other on-off valve closed, the dust in the vessel is tumbled (stirred) by the introduction of negative pressure and secondary air, and the dust suction truck By repeating the suction cycle of sucking into the dust storage tank and sequentially moving the open / close state of each open / close valve, the dust in each vessel is sequentially transported to the dust storage tank.

However, in this case, it takes a long time to completely store the dust in one vessel even in the case where the dust transport pipe is long or has a gradient. Therefore, since the storage time for each vessel is added, it may take a very long time to transport the waste in one waste centralized storage device.

The present invention has been made in view of such a point, and its main purpose is to perform suction of dust on one vessel, and when the last dust reaches the confluence pipe of the transport pipe, By controlling so that suction is performed, that is, by overlapping a part of the suction cycle of each vessel, it is possible to shorten the time for transporting waste to the entire waste centralized storage device.

Further, in each suction cycle, in order to suck and transport the dust in each vessel to the dust storage tank, it is necessary to exhaust and suction the dust storage tank and the vessel to a predetermined maximum negative pressure value. It takes a considerable time to reach the negative pressure value. On the other hand, the required maximum negative pressure value changes depending on the amount of dust.

From this point of view, another object of the present invention is to shorten the transportation time of dust by setting the maximum negative pressure value according to the remaining amount of dust.

(Means for Solving the Problem) In order to achieve the above object, the first solving means of the present invention is, as shown in FIG. 1, a plurality of vessels B for storing dust.
₁ , B _2, ..., A dust storage tank 10 mounted on the dust suction vehicle C for storing dust, and one end of the dust storage tank 10
, And the other end of which is branched and connected to the respective vessels B ₁ , B ₂ ... And the opening / closing valves E ₁ , for opening and closing the respective branch pipes Da ₁ , Da 2 ... E ₂ ...
When, the dust storage tank 10 and the waste accommodating vessel B ₁ communicating with the tank 10, B ₂ ... and a suction device 20 for negative pressure, the vessel B ₁ which is a negative pressure by the suction device 20, B ₂ ... secondary air to the secondary air introduction means F ₁ for introducing, F ₂ ..., by communicating with one of the vessel Bm and waste storage tank 10 of the plurality of vessels B _1, B ₂ ... After the negative pressure is applied to the dust storage tank 10 and the vessel Bm, secondary air is introduced into the vessel Bm to remove dust in the vessel Bm via the communication pipe D.
By the suction cycle for sucking performed on the vessel Bm to 0, the on-off valve E ₁ so as to transport sequentially the vessel B _1, B ₂ ... waste holding tank debris, E ₂ ..., suction device 20 and a secondary A transportation control means 30 for controlling the air introducing means F ₁ , F _2, ... Is provided.

Further, one vessel B by the transportation control means 30
m, the time counting means 31 for measuring the elapsed time after the start of the final dust suction cycle, and the output of the time measuring means 31, and when a predetermined time has elapsed after the start of the final suction cycle of the vessel Bm, the next dust is collected. After opening the opening / closing valve Em + 1 of the suction vessel Bm + 1, the opening / closing valve E of the vessel Bm concerned is opened.
The opening / closing control means 51A for controlling to close m is provided.

The second solving means is a negative pressure detecting means 25 for detecting a negative pressure value by the suction device 20, and a negative pressure detecting means 25 in place of the time measuring means 31 and the transportation control means 51A in the first solving means. In the final suction cycle of one vessel Bm by the transportation control means 30, when the negative pressure after the introduction of the secondary air becomes smaller than the predetermined value, the opening / closing of the vessel Bm + 1 for sucking the next dust is received. After opening the valve Em + 1, the on-off valve E of the vessel Bm concerned
The opening / closing control means 51B for controlling to close m is provided.

A third solution means is that the transport control means 30 in the first or second solution means repeats a plurality of suction cycles for each of the vessels B ₁ , B _2, ... And during the second and subsequent suction cycles. The maximum negative pressure value of the dust storage tank 10 and the vessel is controlled to be lower than the maximum negative pressure value of the first time.

(Operation) With the above configuration, in the final dust suction cycle in which the dust in each vessel Bm is sucked and transported to the dust storage tank 10 by the transportation control means 30, after the start of the final dust suction cycle of the vessel Bm by the time counting means 31. When it is measured that a predetermined time has elapsed, the opening / closing valve Em + 1 of the vessel Bm + 1 for performing the next dust suction is controlled by the opening / closing control means 51A.
Is opened, the dust in both vessels Bm, Bm + 1 is sucked into the dust storage tank 10, and then the vessel B concerned.
The discharge gate valve Em of m is closed. At that time, the dust in the vessel Bm reaches the merging portion from the branch pipe Dam of the communication pipe D, and then is sucked together with the dust in the next vessel Bm + 1 and transported to the dust storage tank 10.

Therefore, since a part of the final suction cycle of the vessel Bm overlaps with the first suction cycle of the next vessel Bm + 1, the suction of dust for each vessel Bm,
The transportation time is shortened, and the efficiency of the transportation of dust as a whole is improved by simple control.

According to the invention of claim (2), when the negative pressure value detected by the negative pressure detecting means 25 becomes lower than the predetermined value during the final suction cycle in one vessel Bm by the opening / closing control means 51B, the following The on-off valve Em + 1 of the vessel Bm + 1 is opened,
After that, the on-off valve Em of the vessel Bm is closed, so that the operation of the invention of claim (1) is performed more reliably, and the efficiency of transporting dust as a whole is improved.

In the invention of claim (3), in the invention of claim (1),
In the second and subsequent suction cycles, the transport control means 30 causes the maximum negative pressure value Pa2 that causes the driving force for sucking the dust in the vessel Bm to be lower than the maximum negative pressure value Pa1 in the first suction cycle. Is set as
In the suction cycle of the second transfer, in which a negative pressure value is not required to suck dust to the dust storage tank 10 side, the transport time is reduced without impairing the dust transport performance.

(First Embodiment) FIG. 2 shows a first embodiment of the present invention. In the figure, B
₁ , B _2, ... Are vessels having a closed space in which dust is stored, and have a shape as shown in FIG. Each of the vessels B ₁ , B _2, ... Is buried in the basement of a housing complex or a building, for example. Each of the vessels B ₁ , B ₂ ... Has a tubular chute Sh.
_One end of each of Sh ₁ , Sh ₂ ... is connected, and the other end of each of the shoots Sh ₁ , Sh ₂ ... is branched and connected to each household of the above-mentioned housing complex or building, and input from each household. The collected dust is collected in each vessel B ₁ , B _2, ... As shown in FIG. 2 and FIG. 3, closing gates I ₁ , I ₂ ... Composed of slide valves are provided at the vessel-side ends of the chutes Sh ₁ , Sh _{2 ,} . .

Further, as shown in FIG. 2 and FIG. 3, each of the vessels B ₁ , B _2, ... Has a secondary air introduction pipe A ₁ , for introducing secondary air into the vessels B ₁ , B ₂ ,. A ₂ ... Are respectively connected. Further, introduction valves V ₁ , V _2, ... Are provided at the vessel-side ends of the respective secondary air introduction pipes A ₁ , A ₂ ,. The secondary air introduction pipes A ₁ , A ₂ ... and the introduction valves V ₁ , V ₂ ...
By these, the secondary air introducing means F ₁ , F _2, ... Are constituted.

Further, Da is a discharge pipe of the tubular, with one end open to the ground, the plurality of vessels B ₁ in the deeper branching unit G _1, G ₂ ... (also at the joining part), B ₂ ... a plurality of branch pipes Da1, each tip extending branches Da2 ... in are connected to each vessel B _1, B ₂ ..., to guide each vessel B _1, B ₂ ... dust to the ground in accordance with the I am trying. As shown in FIGS. 2 and 3, each branch pipe Da1, Da2 of the discharge pipe Da is a slide type valve and serves as an on-off valve for opening and closing each branch pipe Da1, Da2. Ejection gates E ₁ , E ₂ ... Are provided respectively.

Further, C is a garbage suction car, and as shown in FIG.
The dust suction car C is equipped with a rectangular parallelepiped dust storage tank 10 and a suction pipe Db connected to the dust storage tank 10. A rear end wall of the dust storage tank 10 is formed as an opening / closing door 10a that opens rearward around an upper edge of the rear end wall so that the dust in the dust storage tank 10 is dumped rearward of the vehicle. Further, the suction pipe Db is a swirl pipe 1 that is connected to the tank 10 at the upper part of the dust storage tank 10 and is rotatably provided around a vertical axis.
A flexible tube 2 connected to the swivel tube 1, an undulating tube 3 connected to the flexible tube 2 and capable of undulating, and the undulating tube 3
The flexible tube 5 connected to the flexible tube 5 and the tip portion 6 connected to the flexible tube 5.
Reference numeral 7 is a support member for supporting the tip portion 6. That is, at the time of collecting dust, when the dust suction wheel C is brought closer to the ground side opening of the discharge pipe Da and stopped, the tip portion 6 is caused by the turning motion of the swirling pipe 1 and the hoisting motion of the undulating pipe 3.
Is connected to the above-ground opening of the discharge pipe Da.
At the time of this connection, the discharge pipe Da and the suction pipe Db connect the communication pipe D.
, And the garbage storage tank 10 is connected to each of the vessels B ₁ , B _2, ... Through the communication pipe D.

Further, in the dust storage tank 10, there is provided a discharge plate 11 which is formed over the entire vertical cross section in the vehicle width direction of the dust storage tank 10 and which is movable by the cylinder 12 in the front-back direction of the vehicle body. The discharge plate 11 is usually the waste container 1
It is located at the foremost position in 0 and allows the communication between the discharge pipe Db and the dust storage tank 10 while blocking the communication between the discharge pipe Db and the dust storage tank 10 when moving backward. . That is, the dust is accommodated in the space behind the discharge plate 11, and the dust contained in the dust storage tank 10 is moved by moving the discharge plate 11 rearward (indicated by the two-dot chain line in the figure). Is discharged from the open / close door 10a to the outside, or dust is compressed between the open / close door 10a and the open / close door 10a to secure a dust storage space in the dust storage tank 10.

Then, as shown in FIG. 5, a suction chamber 14 which is partitioned from the tank 10 by a partition plate 13 is formed in a portion of the dust storage tank 10 in front of the discharge plate 11.
A communication chamber 15 communicating with the suction chamber 14 is provided above the suction chamber 14 so as to project above the dust storage tank 10. The communication chamber 15 extends to the vicinity of the rear of the discharge plate 11 of the dust storage tank 10, and a dust suction preventing filter 16 made of punching metal is attached to substantially the entire bottom of the discharge chamber 11. The lower suction chamber 14 and the dust storage tank 10 are communicated with each other via the.

Further, a suction device 20 is mounted on the front side of the dust storage tank 10. The suction device 20 includes a suction passage 21 whose one end is connected to the suction chamber 14 of the garbage storage tank 10 and whose other end is open to the atmosphere, a water tank grabber 22 provided in the suction passage 21, and a water tank grab 22. Also a suction blower 23 provided in the suction passage 21 on the atmosphere open side,
It is composed of a muffler 24 provided in the suction passage 21 on the atmosphere open side of the suction blower 23. And
By the suction device 20, the suction chamber 14 and the communication chamber 15
Through the garbage storage tank 10 and each vessel B ₁ , B ₂
It is designed so that the exhaust of ...

Then, the input gates I ₁ , I _2, ..., Inlet valves V ₁ , V
₂ , the discharge gates E ₁ , E _2, ... And the suction device 20 are controlled by a controller 30 provided in the cab of the vehicle body C. That is, the controller 30 is arranged so that one of the plurality of vessels B ₁ , B _2, ...
(M = 1, 2 ...) and the dust container 10 are negatively pressured, and then secondary air is introduced into the vessel Bm to suck the dust in the vessel Bm into the dust container 10 through the communication pipe D. By repeating the suction cycle for the vessel Bm, the on-off valve (exhaust gate) Em, the suction device 20, and the secondary air introducing means F are arranged so that the dust in each of the vessels B ₁ , B _2, ... Is sequentially transported to the dust storage tank 10. ₁ , F ₂
It functions as a transportation control means for controlling ...
Further, the controller 30 has a timer 31 built therein as a time measuring means for measuring an elapsed time from a predetermined time. In addition, water task rubber 22 and suction blower 2
3, a pressure sensor 25 as a negative pressure detecting means for detecting a negative pressure value by the suction device 20 is provided, and an output signal of the pressure sensor 25 is input to the controller 30. ing.

Next, the vessels B ₁ , B ₂ by the controller 30 are
The waste transportation control from ... Will be described based on the flowchart of FIG. 6 and the time chart of FIG. Here, FIG. 7 (a) ~ (d) are respectively a negative pressure value P, the charged gate I ₁ closing of ~I _3, each inlet valve V ₁ ~V _3,
Shows the time change of the opening and closing of each discharge gate E ₁ to E _3.

After the start, in step S ₁ , each vessel Bm (m = 1,
2) is opened, and the introduction valve Vm and the discharge gate Em are closed. In this state, the garbage thrown in from each household or the like is collected in the vessel Bm via the chute Shm.

Next, in step S ₂ , the subscript m = 1 and the vessel B
The number m of m is initialized. Therefore, hereinafter, the subscript m of the vessel Bm means “1”. Then, in step S ₃ , the discharge gate Em (= E ₁ ) is opened, and in step S
_{In step 4} , the closing gate Im (= I ₁ ) is closed, and step S
_{At 5} , the air suction by the suction device 20 is started. As a result, the negative pressure value P in the dust storage tank 10 and the vessel Bm starts to rise from "0" (see FIG. 7 (a)).

Then, in step S _6, wait until the negative pressure value P reaches the maximum negative pressure value Pa1, (when the seventh view of time tpa) and negative pressure P reaches the maximum negative pressure Pa1, at step S ₇ Introduction valve V
m is opened (see FIG. 7 (c)), and secondary air is introduced into the vessel Bm from the secondary air introduction pipe Am. Furthermore, the negative pressure value P reaches the lower limit value Pb at step S _8, (see FIG. 7 (c)) closing the inlet valve Vm in step S _9, on stopping the introduction of secondary air, the controller 30 It sets the count T of the timer 31 to "0" which is incorporated in (at time t ₀ of Figure 7). At this time, the first dust suction cycle is completed and the second dust suction cycle is started. During this period, the vessel B
The input gate Im of m (= B ₁ ) is closed and the discharge gate Em remains open (see FIGS. 7B and 7D).

Next, in a second dust suction cycle, in step S _10, the count T from the start of counting by the timer 31 to determine whether reaches _one or more predetermined value T in step S _9, When T ₁ is reached (at time t ₁ in FIG. 7), in step S ₁₁ , the closing gate Im is opened, and immediately after that, the introduction valve Vm is opened (see FIGS. 7B and 7C). Here, the predetermined time T ₁ is set to such a time that the negative pressure value P becomes the maximum negative pressure value Pa2 lower than the maximum negative pressure value Pa1 in the first suction cycle (FIG. 7). (See (a)). Then, the above-mentioned input gate Im
By controlling the opening of the introduction valve Vm and the negative pressure value P, the negative pressure value P is suddenly reduced, the dust is tumbled in the vessel Bm, and the residual dust is sucked and transported to the dust storage tank 10. At the same time, the count T of the timer 31 is reset at the same time.

Then, in step S ₁₂ , wait until the count T of the timer 31 reaches a predetermined value T ₂ , and when it reaches T ₂ , step S 12
_{At 13} , the introduction valve Vm is closed and at the same time, the count T of the timer 31 is reset again (at time t ₂ in FIG. 7).
In this state, the introduction of the secondary air into the vessel Bm is stopped (see FIG. 7 (c)), but the suction of dust is continued.

Immediately after that, if it is confirmed in step S ₁₄ that the number m of the vessel Bm is not the final number, step S ₁₅
Then, the next vessel Bm + 1 (here,
B reference ₂₎ discharge gate Em + 1 of (= E ₂₎ Open (Figure 7 (d)), the suction of dust and starts a negative pressure in the vessel Bm + 1, initiates transport. In this state, the dust in the two vessels Bm and Bm + 1 is sucked and transported to the dust storage tank 10.

Further, in step S _16, wait until the count T of the timer 31 is reset in step S ₁₃ reaches a predetermined value T _3, (at time t ₃ of FIG. 7) to reach T _3, the vessel Bm The discharge gate Em is closed (see FIG. 7 (d)). As a result, the dust suction operation of the vessel Bm is completed, and thereafter, the charging gate Im is opened and the introduction valve Vm is closed.

Thereafter, in step S _18, and m = m + 1, after updating the vessel number, the process returns to step S _4. Thus, hereinafter, the following vessel B _2, Step S ₄ performs the following control, B ₁ .about.B ₃ of sequentially each vessel B _1, B _2, B ₃ performs dust suction (Figure 7 (a) Each operation).

Then, if it is determined at the step S _14, the number m of Bessel m reaches final number, the process proceeds to step S _19, performs the final dust suction control.

That is, in step S ₁₉ , wait until the count T of the timer 31 reset in step S ₁₃ reaches a predetermined value T ₄ , and when it reaches T ₄ , close the discharge gate Em in step S ₂₀ and then in step S ₂₁ . Then, the suction of air by the suction device 20 is stopped. As a result, all the suction and transportation work of the dust in the dust central storage device is completed.

In the above flow, when the predetermined time (T ₁ + T ₂ ) has elapsed after the start of the final suction cycle of the vessel Bm by the control of steps S _{9 to} S ₁₇ , the discharge valve of the vessel Bm + 1 for sucking the next dust is next. After opening Em (open / close valve),
An opening / closing control unit 51A for controlling the discharge gate Em of the vessel Bm to close is configured.

Further, the control of step S ₉ to S _11, in claim (3) transport control means 30 in the invention of (controller), when second and subsequent aspiration cycle, the maximum negative pressure value of the waste holding tank 10 and the vessel Bm Pa2 Is configured to be lower than the first maximum negative pressure value Pa1.

Therefore, in the invention of claim (1), in the final dust suction cycle in which the dust of each vessel Bm is sucked and transported to the dust storage tank 10 by the controller 30 (transportation control means), the vessel is controlled by the timer 31 (clocking means). Bm
A predetermined time (T ₁ + T ₂ ) after the start of the last dust suction cycle of
When it is measured that the time has passed, the opening / closing control means 51A opens the discharge gate Em + 1 of the next vessel Bm + 1. That is, at this time, since the discharge gate Em of the vessel Bm remains open, both vessels Bm and Bm + 1.
The dust inside is sucked into the dust storage tank 10. Then, after that, the discharge gate Em of the vessel Bm is closed, but at that time, the dust in the vessel Bm reaches the merging portion Gm from the branch pipe Dam of the discharge pipe Da (communication pipe). Then, after that, it is sucked together with the dust in the next vessel Bm + 1 and transported to the dust storage tank 10. That is, the time required for the residual dust to reach the merging portion Gm can be approximately calculated, and thus the above control can be performed. In particular, when the discharge pipe Da is long or has a reverse gradient, it takes a long time for the dust to be sucked and transported to the dust storage tank 10 after reaching the merging portions G ₁ , G _2, ... Of the discharge pipe Da. Moreover, since the time is accumulated for each of the vessels B ₁ , B _2, ..., The waste discharge efficiency of the whole waste centralized storage device deteriorates. On the other hand, in the present invention, after the last dust reaches the merging portions G ₁ , G _2, ... Of the discharge pipe Da, it is sucked up to the dust storage tank 10 by the suction operation of the next vessel Bm + 1. Since it is controlled, dust suction and transportation time for each vessel Bm is shortened accordingly. That is, it is possible to improve the efficiency of transporting dust as a whole with simple control. Further, as a result, the fuel consumption of the dust suction vehicle C can be saved.

According to the invention of claim (3), in the invention of claim (1), the controller 30 causes the maximum negative pressure to generate a driving force for sucking dust in the vessel Bm in the second and subsequent suction cycles. The value Pa2 is the first maximum negative pressure value Pa2
It is set to be lower than. That is, the first
Compared to the second suction cycle, the amount of dust remaining is small after the second suction cycle, and a negative pressure value is not required so much to suck dust toward the dust storage tank 10. Therefore, by reducing the maximum negative pressure value Pa to the minimum required value, it is possible to reduce the time required for the suction cycle without impairing the transportation performance of the dust. Therefore, the invention of claim (1) The effect can be exerted more remarkably.

Second Embodiment Next, a second embodiment of the present invention will be described based on the flowchart of FIG. 8 and the time chart of FIG.
Note that FIG. 9 is a view corresponding to FIG. 7 in the first embodiment, and the configuration of the device is the same as that in the first embodiment.

In the flow of FIG. 8, in steps S _{31 to} S ₃₈ , the same control as in steps S _{1 to} S ₈ is performed on the vessel Bm (= B ₁ ) to complete the first suction cycle, In step S ₃₉ , the inlet valve Vm is closed (Fig. 9 (c)).
), The second suction cycle is started (at time t ₀ in FIG. 9). Then, wait until negative pressure value P at step S ₄₀ becomes maximum negative pressure value Pa2 in the second suction cycle (when the ninth view of time tpa) to reach Pa2, in step S _41, turned Open the gate Im, and immediately after that, open the introduction valve Vm (Figs. 9 (b) and (d)).
See), to initiate the tumbling of the vessel Bm, at step S _42, to wait until the negative pressure value P becomes a predetermined value Pc, when the reach Pc (of FIG. 9 at time t _4), the step S ₄₃ Then, the introduction valve Vm is closed to stop the introduction of the secondary air into the vessel Bm. Next, when the number m of the vessel Bm in step S ₄₄ to verify that it is not the last number, at step S _45, at the same time by setting the count of the timer 31 to "0", the next vessel Bm + 1 (= B ₂ ), The discharge gate Em + 1 (= E ₂ ) is opened (see FIG. 9 (d)).
In this state, as in the first embodiment, the vessel B
The dust in both m and the next vessel Bm + 1 will be sucked into the dust storage tank 10.

Next, in step S ₄₆ , the timer 31 waits until the count T reaches a predetermined time T _{5, and when} it reaches T ₅ (at time t ₅ in FIG. 8), the process proceeds to step S ₄₇ and the vessel B concerned is reached.
The discharge gate Em of m is closed (see FIG. 9 (d)). This completes the transportation of dust in the vessel Bm.
Then, in step S _48, after updating of the m = m + 1 as a number, the flow returns to step S _34. Then, thereafter, the same control as that described above is sequentially performed on the next vessels B ₂ and BB ₃ , and finally, when the number m of the vessel Bm reaches the final number in the determination of step S ₄₄ , the process proceeds to step S _49. , Wait until the negative pressure value P reaches the lower limit value Pb, and when it reaches Pb, close the discharge gate Em in step S ₅₀ ,
_{At 51} , the suction of the air by the suction device 20 is stopped, and the transportation of the dust in the entire dust concentration storage device is completed.

In the above flow, when the negative pressure P after the introduction of the secondary air becomes smaller than the predetermined value Pc in the final suction cycle of one vessel Bm by the controller 30 (transport control means) by the control of steps S _{42 to} S _47. After the opening / closing valve of the vessel Bm + 1 for sucking the next dust is opened, the opening / closing control means 51B for controlling the discharge gate Em (opening / closing valve) of the vessel Bm to close is configured.

Therefore, in the invention of claim (2), during the final suction cycle of one vessel Bm, after the suction is started, the pressure sensor 25
When the negative pressure value P detected by the (negative pressure detection means) decreases to a predetermined value Pc, the opening / closing control means 51B opens the discharge gate Em + 1 (open / close valve) of the vessel Bm for discharging the next dust. After that, since the discharge gate Em of the vessel Bm is closed, the same effect as the invention of claim (1) can be obtained. Then, in that case, the negative pressure value Pc when the last dust reaches the merging portions G ₁ , G _2, ... Of the discharge pipe Da is more accurately obtained than by time. That is, compared with the invention of claim (1), the vessel B
Even if there is a variation in the discharge time due to a difference in the size of m, the diameter of each branch pipe Dam of the introduction pipe Am, and the discharge pipe Da, there is an advantage that the effect of the invention can be surely exhibited.

Also in this embodiment, the maximum negative pressure value Pa2 in the second and subsequent suction cycles is set to the maximum negative pressure value in the first suction cycle according to the invention of claim (3) in which claim (2) is cited. It goes without saying that when the value is set lower than Pa1, the effect of improving the transportation efficiency as a whole can be more remarkably exhibited.

In addition, in each of the above-described embodiments, the case where the suction cycle is performed twice for each vessel Bm has been described, but the present invention is not limited to such an embodiment, and one or three times.
The suction cycle may be repeated a number of times or more, and even in that case, by controlling the final suction cycle by the opening / closing control means 51, the time required as a whole can be shortened. . The suction cycle is the final cycle for the case where the dust in each vessel Bm is transported to the dust storage tank 10 by one suction.

(Effects of the Invention) As described above, according to the invention of claim (1), a communication pipe and a branch pipe for connecting a plurality of vessels for storing dust and a dust storage tank mounted on a dust suction truck In a dust suction / transport device in which each vessel is suctioned by a suction device to sequentially suck and transport dust to / from a dust storage tank, a predetermined period is set after the start of the final suction cycle of one vessel. When the time has elapsed, the suction cycle of the next vessel is started after the suction of the next vessel is started, so that when the final residual dust of the vessel reaches the confluence of the branch pipe of the communication pipe, By sucking and transporting together with the garbage of the vessel to the garbage storage tank, the transportation time of the garbage of each vessel can be shortened,
Therefore, with simple control, it is possible to reduce the transportation time of dust as a whole.

According to the invention of claim (2), during the final suction cycle of one vessel, when the negative pressure value becomes lower than the predetermined value,
Since the suction cycle of the vessel is completed after the suction cycle of the next vessel is started, the effect of the invention of claim (1) can be more reliably exhibited.

According to the invention of claim (3), in the invention of the above-mentioned claim (1) or (2), when dust is sucked and transported in each vessel in a plurality of suction cycles, the second and subsequent suction of dust in the vessel is performed. Since the maximum negative pressure value for is set lower than the first maximum negative pressure value, it is possible to effectively prevent an increase in the transportation time of dust due to an increase in the extra negative pressure value. The effect of the invention of claim (1) or (2) can be more remarkably exhibited.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of the present invention. 2 to 7 show a first embodiment of the present invention, FIG. 2 is a view schematically showing the entire structure of a refuse centralized storage device, FIG. 3 is a longitudinal sectional view near the vessel, and FIG. FIG. 5 is a vertical cross-sectional view showing the structure of the dust suction car, FIG. 5 is a vertical cross-sectional view showing the configuration of the dust suction path by the suction device in a cross section in the vicinity thereof, and FIG. Fig. 7 shows suction of dust, negative pressure value during transportation, opening and closing of input gate,
Time charts showing changes with time of opening and closing of the introduction valve and opening and closing of the discharge gate, FIGS. 8 and 9 show a second embodiment of the present invention, and FIG. 8 is a flow chart showing control contents of the controller, FIG. 9 is a time chart diagram showing a time change of the negative pressure value, opening / closing of the input gate, opening / closing of the introduction valve, and opening / closing of the discharge gate during the suction transportation of dust. Bm ... Vessel C ... Dust suction truck D ... Communication pipe Dam ... Branch pipe Em ... Discharge gate (open / close valve) Fm ... Secondary air introduction means 10 ... Trash storage tank 20 ... Suction device 25 ... ... Pressure sensor (negative pressure detection means) 30 ... Controller (transportation control means) 31 ... Timer (timekeeping means) 51 ... Opening / closing control means

Continuation of front page (56) Reference JP-A 61-101302 (JP, A) JP-A 1-236028 (JP, A) JP-A 60-2501 (JP, A) JP-A 2-265801 (JP , A)

Claims (3)

[Claims] 1. A plurality of vessels for storing dust, a dust storage tank mounted on a dust suction vehicle and storing the dust,
One end is connected to the waste storage tank, the other end is branched and connected to each of the vessels, an on-off valve for opening and closing each branch pipe of the communication pipe, the waste storage tank and the waste One of the plurality of vessels, a suction device for reducing the pressure of the vessel communicated with the storage tank to a negative pressure, a secondary air introducing means for introducing secondary air into each of the vessels whose pressure is reduced by the suction device. The two vessels and the waste storage tank are communicated with each other, the negative pressure is applied to the waste storage tank and the vessel, and then secondary air is introduced into the vessel to suck the waste in the vessel into the waste storage tank through the communication pipe. By carrying out the suction cycle for the vessel concerned, the transport control for controlling the on-off valve, the suction device and the secondary air introducing means so as to sequentially transport the waste in each vessel to the waste storage tank. And a time measuring means for measuring an elapsed time after the start of the final dust suction cycle of one vessel by the transportation control means, and an output of the time measuring means, and a predetermined time after the start of the final suction cycle of the vessel. A dust suction / transport device comprising: an opening / closing control means for controlling to open and close the opening / closing valve of the vessel for sucking dust next time after a lapse of time. 2. A plurality of vessels for storing dust, a dust storage tank mounted on a dust suction vehicle and storing the dust,
One end is connected to the waste storage tank, the other end is branched and connected to each of the vessels, an on-off valve for opening and closing each branch pipe of the communication pipe, the waste storage tank and the waste One of the plurality of vessels, a suction device for reducing the pressure of the vessel communicated with the storage tank to a negative pressure, a secondary air introducing means for introducing secondary air into each of the vessels whose pressure is reduced by the suction device. The two vessels and the waste storage tank are communicated with each other, the negative pressure is applied to the waste storage tank and the vessel, and then secondary air is introduced into the vessel to suck the waste in the vessel into the waste storage tank through the communication pipe. By carrying out the suction cycle for the vessel concerned, the transport control for controlling the on-off valve, the suction device and the secondary air introducing means so as to sequentially transport the waste in each vessel to the waste storage tank. Together and a stage, a negative pressure detecting means for detecting the negative pressure by the suction device,
When the negative pressure after the introduction of secondary air becomes smaller than a predetermined value in the final suction cycle of one vessel by the transportation control means in response to the output of the negative pressure detection means, the opening / closing of the vessel for sucking the next dust is performed. An open / close control means for controlling the open / close valve of the vessel to be closed after opening the valve. 3. The transportation control means repeats the suction cycle for each vessel a plurality of times, and at the time of the second and subsequent suction cycles, the maximum negative pressure value of the dust storage tank and the vessel is changed to the maximum negative pressure value of the first time. The dust suction / transport device according to claim 1, wherein the dust suction / transport device is controlled to be lower than the above.