JPH064444B2 - 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 for collecting garbage discharged from homes, (1) a garbage container is arranged in each housing complex or building, and the garbage from each household is thrown into this container to collect the garbage. 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)" described above, since users such as households carry garbage to the container, the garbage is dropped on the road on the way to impair environmental hygiene. There is 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 the dust in a space that is shielded from the outside world, and at the time of dust collection, suction this by negative pressure to the dust suction truck through the clearance 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, dust is stored in a vessel, and the dust in the vessel is tumbled (stirred) by the introduction of negative pressure and secondary air during dust collection.
At the same time, it will be sucked into the garbage storage tank of the garbage suction truck through the customs clearance.

With such a system, the dust sucked into the dust storage tank is transported to the dust disposal site by the dust suction truck and is discarded. In that case, in order to collect waste efficiently, there is a demand for the waste storage tank to be fully filled before going to the waste disposal site.

Therefore, it is conceivable to detect the weight of the dust storage tank after sucking the dust, calculate the volume of dust in the dust storage tank, and estimate the remaining volume of the dust storage tank from this volume of dust. However, since the specific gravity of dust is not constant depending on the vessel, it is difficult to accurately calculate the volume of dust in the dust storage tank.

By the way, in order to estimate the movement of dust, it is considered that when dust is tumbled in the vessel, a part of the dust becomes a group and is sucked into the storage tank by the negative pressure through the communication pipe.

Therefore, during dust collection, "one cycle of dust suction" from the introduction of negative pressure and secondary air into the vessel to the suction of a group of dust into the storage tank is repeated several times.

Therefore, it is conceivable to count the number of repetitions of this "1 cycle of dust suction", calculate the volume of dust in the dust storage tank from this number of times, and estimate the remaining volume of the dust storage tank from this volume of dust. . But,
Since the amount of dust sucked in "one cycle of dust suction" is not constant, it is difficult to accurately calculate the volume of dust in the dust storage tank.

In the course of such an examination, the present inventor observed the change in the negative pressure value on the suction side during the "one cycle of dust suction", and found the following. In other words, the negative pressure value increases while the negative pressure of the vessel and the waste storage tank progresses,
When the secondary air is introduced into the vessel and the tumbling of dust is started, the negative pressure value decreases at once and settles to a value below a predetermined value. Then, when there is dust in the vessel, the negative pressure value is maintained at a substantially constant value during the downward movement, and a group of dust is sucked and transported through the communication pipe. In that case, it was found that the volume of dust transported in "one cycle of dust suction" has a correlation with the negative pressure value during dust transport and the time required for dust transport.

With this in mind, in the present invention, the volume of dust in the dust storage tank is further calculated by using the negative pressure value at the time of dust transport and the time required for dust transport in this "one-cycle dust suction". That is also the purpose.

In order to achieve this object, in the present invention, the amount of transported dust in one cycle is determined based on the negative pressure value during the transportation of dust during the suction of dust in one cycle and the time required for the transportation of dust.

(Means for Solving the Problem) Specifically, as shown in FIG. 1, a solution means taken by the present invention is a vessel in which dust is stored and a secondary air for introducing secondary air into the vessel. Introducing means 41, a dust storage tank that is mounted on a dust suction person and is connected to the vessel through a clearance, a suction device 23 that makes the dust storage tank and the vessel a negative pressure, the dust storage tank and the vessel The suction device 23 and the secondary air introducing means 4 so that the secondary air is introduced into the vessel after the pressure is reduced to transport the dust in the vessel to the dust storage tank through the communication.
Negative pressure detection means 25 for detecting a negative pressure value by the suction device 23 while having a transportation control means 42 for controlling
And a transportation amount calculating means 43 which receives the output of the negative pressure detecting means 25 and obtains a dust transportation amount on the basis of a negative pressure value at the time of dust transportation in one cycle of dust suction and a time required for the dust transportation. I am trying.

(Operation) With the above configuration, in the present invention, the vessel is provided in a state of being shielded from the outside by being buried in the underground, for example, and garbage from each household or the like is thrown into the vessel through the chute or the like. If this is done, there will be no dust falling on the road and no offensive odor of dust will flow into the living space, and good environmental hygiene will be maintained.

Then, at the time of collecting the waste, the waste storage tank of the dust suction person is connected to the vessel through the communication pipe, and the transportation control means 42 is connected.
The suction device 23 and the secondary air introduction means 41 are controlled by the above so that the secondary air is introduced into the vessel after the negative pressure is applied to the dust storage tank and the vessel, while the dust in the vessel is tumbling and the dust is passed through the communication pipe. The waste will be transported to the storage tank and the waste will be reliably collected in the storage tank.

In that case, based on the negative pressure value detected by the negative pressure detection means 25, the transportation amount calculation means 43 obtains the negative pressure value at the time of dust transportation in one cycle of dust suction and the time required for the dust transportation, Since the dust transportation amount is calculated based on these, the volume of dust transported in one cycle of dust suction can be accurately determined. Therefore, if the volume of dust transported in this one cycle of dust suction is accumulated for each suction cycle, the volume of dust in the dust storage tank can be calculated, and the remaining volume in the dust storage tank can be accurately calculated from this dust volume. Well estimated.

First Embodiment The present invention will be described below with reference to the drawings.

FIG. 2 shows a first embodiment of the present invention. In the figure, B
e ₁ , Be ₂ ... Are vessels having a closed space in which dust is stored, and have a shape as shown in FIG. Each of the vessels Be ₁ , Be ₂ ... Is buried in the basement of a housing complex or a building, for example. One end of a tubular chute Sh ₁ , Sh ₂ ... Is connected to each of the vessels Be ₁ , Be ₂ ... And the other end of each chute Sh ₁ , Sh ₂ ... The waste that is connected to each household etc. and thrown in from each household etc.
e ₁ , Be _2, ... Are collected. Then, as shown in FIG. 2 and FIG. 3, the shoots Sh ₁ ,
Sh ₂ ... Are provided with closing gates I ₁ , I ₂ ...

Further, as shown in FIG. 2 and FIG. 3, each of the vessels Be ₁ , Be ₂ ... Has a corresponding _{one of} the vessels Be ₁ , Be _2.
Secondary air introducing pipes A ₁ , A ₂ ... Introducing secondary air are connected to. Further, the introduction valves V ₁ , V ₂ are provided at the vessel-side ends of the respective secondary air introduction pipes A ₁ , A ₂ .
... is provided. The secondary air introduction pipes A ₁ , A ₂ ...
And the introduction valves V ₁ , V _2, ...
Are configured.

Further, D ₁ is a tubular discharge pipe, one end of which branches in accordance with the number of vessels and is connected to each of the above-mentioned vessels Be ₁ , Be ₂ ...
It is arranged to guide the garbage ₁ , ₂ , Be _2, ... To the ground. As shown in FIG. 2 and FIG. 3, discharge gates E ₁ , E ₂ ... Composed of slide valves are provided at the branch portions of the discharge pipe D ₁ .

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 D ₂ connected to the dust storage tank 10. The dust storage tank 10 is provided so that the front portion of the dust storage tank 10 can be lifted upward and dumped around the rear end of the lower portion thereof when dumping dust. Also, the garbage storage tank 1
In No. 0, the rear end wall is formed on the opening / closing door 10a that opens rearward around the upper end edge of the dump truck at the time of dumping, so that the dust in the dust storage tank 10 is dumped to the rear of the vehicle. In addition, the suction pipe D ₂ is connected to the dust container 10
A swirl tube 1 connected to the tank 10 and rotatably provided around a vertical axis in the upper part of the pipe, a flexible tube 2 connected to the swirl tube 1, and a flexible tube 2 connected to the flexible tube 2 and capable of undulating. From the undulating pipe 3, the extensible pipe 4 connected to the undulating pipe 3, the flexible pipe 5 connected to the extensible pipe 4, and the tip portion 6 connected to the flexible pipe 5. Become. Reference numeral 7 is a support member for supporting the tip portion 6, and 8 is a support frame for supporting the undulating tube 3. Therefore, at the time of collecting dust, when the dust suction wheel C is brought close to the ground side opening of the discharge pipe D ₁ and stopped, the swivel pipe 1 swivels, the undulating pipe 3 moves up and down, etc. _It is connected to the ground side opening of _{No. 1} . At the time of this connection, the discharge pipe D ₁ and the suction pipe D ₂ constitute a communication pipe D, and the waste container 10 is connected to each of the vessels Be ₁ , Be ₂ ... Through the communication pipe D.

Further, the dust suction truck C is equipped with a suction unit 20 in front of the dust storage tank 10. The suction unit 20 includes a suction passage 21 having one end connected to the dust storage tank 10 and the other end open to the atmosphere, and the suction passage 2
1, a suction device 23 having a blower and provided in a suction passage 21 on the atmosphere opening side of the water suction club 22 and a suction passage 21 on the atmosphere opening side of the suction device 23. The silencer 24 is provided, and the suction device 23 is used to make the dust container tank 10 and each of the vessels Be ₁ , Be ₂ ... Negative pressure.

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 23 are controlled by the control unit 30. In addition, the suction passage 21 between the water task rubber 22 and the suction device 23
Is provided with a pressure sensor 25 as negative pressure detecting means for detecting a negative pressure value by the suction device 23, and an output signal of the pressure sensor 25 is input to the control unit 30.

Next, the control of the control unit 30 will be described based on the flow of FIG. After the start, first, at step S ₁ , the charging gates I ₁ , I ₂ ... Are opened, and the discharge gates E ₁ , E ₂ ... And the introduction valves V ₁ , V ₂ ... Are closed. In this state, the garbage thrown from each household or the like passes through the shoots Sh ₁ , Sh ₂ ... And the vessels Be ₁ , Be ₂
... are collected respectively.

Then, reset to "0" to the count j of the suction cycle is reset to "0" subscript m any vessel Bem in step _{S 2,} the m in Step _{S 3} "1" is incremented by. With this, the vessel to be controlled becomes Be ₁ for the _first time, and from the next time onward, Be ₂ , Be.
₃ ... proceed. Then, close the charged gate Im in Bem in step _{S 4,} open the discharge gate Em at step _{S 5,} the suction device 23 is turned on operated in step _{S 6} starts air suction. Then, to detect the negative pressure value _{P N} for every predetermined time by the pressure sensor 25 in step _{S 7,} from the time function expression of _{"P N = f (t)} " point-to-point, its differential value P _'N (negative Pressure gradient).

Thereafter, it is determined whether the negative pressure value P _N has exceeded the set value Pa in step S _8, becomes a P _N> Pa progressed air suction opening the inlet valve Vm in step S _9, put the gate immediately thereafter Open Im (state of FIG. 6). As a result, the secondary air is introduced from the secondary air introduction pipe Am into the vessel Bem to start tumbling of the dust, the negative pressure value suddenly decreases, and a group of dust begins to enter the communication pipe D (see FIG. 6). State of). Then, when a group of dusts completely enters the communication pipe D, the negative pressure value becomes substantially constant, and the group of dusts is sucked and transported to the dust storage tank 10 through the communication pipe D (states (1) to (6) in FIG. 6). ). Further, when a group of dust starts to enter the dust storage tank 10 and the dust in the communication pipe starts to break, the negative pressure value begins to decrease, and when the communication pipe D is emptied after transporting the dust, the negative pressure value becomes a substantially constant value. (States of to in FIG. 6). In this way, "one cycle of dust suction" is performed from the introduction of the negative pressure and the secondary air into the vessel Bem to the suction of the group of dust into the storage tank 10.

Here, the pattern of the negative pressure value during the suction during the "1 cycle of dust suction" will be described with reference to FIGS. 7 and 8. First, the negative pressure value Pj during transportation (negative pressure value that takes a substantially constant value) increases as the amount of a group of dust sucked and transported to the dust storage tank 10 via the communication pipe D increases (Pj).
₃ > Pj ₂ > Pj ₁ ). It is considered that this is because as the amount of dust in the communication pipe D increases, negative pressure commensurate with the running resistance of dust becomes necessary. Further, it is considered that the time required for a group of dust to be sucked and transported to the dust storage tank 10 through the communication pipe D is substantially determined by the length of the communication pipe D. Therefore, this time is substantially equal in the suction cycles CYL ₁ and CYL ₂ . However, as shown in FIG. 8 (a), when the amount of dust in the group is further increased and the communication pipe D is filled, dust still continues to enter from the vessel Bem into the communication pipe D. Like CYL ₃ , this time will be extended later.

Thus, after closing the "one cycle of waste suction" open inlet valve Vm and turned gate Im in the step S _9, with the lapse of a predetermined time in step S _10. Then, when a certain time has elapsed, the negative pressure value P _N is determined in step S _11.
And the differential value _P 'N, _P' and _N-1 uptake, the change amount of the differential value in step S _{12 |} wait until more than a predetermined amount "a", "| | P 'N -P' N-1 P ' _N- P ' _N-1 |>
When it becomes a ″, the process proceeds to step S _13. Here, when the amount of change in the differential value exceeds a predetermined amount, (1) when the negative pressure value falls at a sudden rate and then becomes a substantially constant negative pressure value (first (State of Figure 6).

(2) When a group of dust begins to enter the dust storage tank 10 and the negative pressure value starts to decrease (state in FIG. 6).

(3) When the communication pipe D is emptied after the waste is transported and the negative pressure value becomes a substantially constant value (state in FIG. 6).

Is one of. Therefore, in step S ₁₃ , the negative pressure value P
_It is determined whether _N is smaller than the predetermined value Pb. When "P _N ≥Pb", it is determined that "(1) or (2)" is not the above "(3)", and at this time, "1 cycle of dust suction" is still in progress. Therefore, the process proceeds to step S ₁₄ . Then, the count of the timer TM to be measured (all dust has time required for passing through the communicating pipe D in dust suction cycle) that this step S ₁₄ at time Tj required to refuse transport in one cycle of the dust suction Is started, and the count j of the suction cycle is incremented in step S ₁₅ . Further incorporate a negative pressure value P _N in step S _16, which is referred to as negative pressure Pj at waste transportation. Then, in step S ₁₇ , the negative pressure value P _N and the differential values P ′ _N and P ′ _N−1 are fetched again, and in step S ₁₈ , the differential value change amount | P ′ _N −P ′ _N−1 | wait more than quantitative _"a", becomes the _{"| | P 'N -P'} N-1>a", the process proceeds to step P _19. Then, in this step S ₁₉ , wait until the negative pressure value P _N becomes smaller than the predetermined value Pb,
When " _PN <Pb" is satisfied, it corresponds to "case (3)" and it is determined that "1 cycle of dust suction" (I in FIG. 10) is completed. That is, in step S ₂₀ , the timer TM
The counting is stopped, and the time Tj required for transporting the waste is obtained from this counting. That is, here, Tj is the sixth
Counting is done in the section from to in the figure. However, it is also possible to use Tj 'which counts in the interval of ~, or Tj "which counts in the interval of ~.

Then, in step S _21, the volume value of the waste transport amount by the current suction cycle based on the time taken for the negative pressure value Pj and waste transport during waste transport as determined above Tj, m (j)
Is calculated by m (j) = {Pj × (Tj / To)} / α. Here, To has a time required for one dust to pass through the communication pipe D, and is obtained by actual measurement,
The measurement section is set, for example, as shown in FIGS. 9 (a) to 9 (c). Further, α is a value corresponding to the specific gravity of dust. In this formula, (Tj / To) gives the communication pipe D
The volume of dust that has passed through is displayed dimensionlessly. on the other hand,
Pj is proportional to the weight of the dust that has passed through. That is, the larger the negative pressure value Pj during the transportation of the waste and the longer the time Tj required for the transportation of the waste, the larger the amount of transportation m (j) of the waste is calculated. Then, the amount of waste transported by each suction cycle m
By accumulating (j), the loading volume M, which is the dust volume in the dust storage tank, is obtained.

After that, the next in step S ₂₂ "1 cycle of garbage suction"
Back to close the inlet valve Vm closes the charged gate Im includes the air suction to step S ₈ in again, and to perform the "one cycle of waste suction" (II of FIG. 10).

In this way, when “P _N <Pb” is determined in step S ₁₃ while repeating “1 cycle of dust suction”, the “1 cycle of dust suction” is differentiated after the secondary air is introduced. When the change amount | P ′ _N −P ′ _N−1 | of the value exceeds the predetermined amount “a” for the first time, the negative pressure value P _N is set to the predetermined value Pb.
Since it is smaller than the above, there is no "case of (1) and (2)" in "1 cycle of dust suction", and it suddenly becomes "case of (3)". This is Vessel B
It means that there is no dust in the em. In that case, "1 cycle of dust suction" (II in Fig. 10)
I) not only has been completed, even dust suction of the vessel Bem proceeds to step S ₂₃ when judged complete, moves to the suction of dust from the next vessel by closing the inlet valve Vm closes the discharge gate Em . That is, step S ₂₄
In the subscript m is equal to or the last number, if not the last number returns to step S ₃ to repeat the processing described above for the vessels of the following numbers. On the other hand, to stop the air suction off the suction device 23 proceeds to step S ₂₅ when the final number.

In the above flow, the step _S 3 to S _10, the vessel by introducing secondary air into the vessel Bem dust holding tank 10 and vessel Bem from the negative pressure Bem
Of the suction device 23 and the secondary air introduction means 41 so as to transport the dust of the above to the dust storage tank 10 through the communication pipe D.
The transport control means 42 for controlling the Further, in step S ₁₄ to S _21, the negative pressure detection means (pressure sensor)
In response to the output of 25, the transport amount calculating means 43 is configured to obtain the dust transport amount based on the negative pressure value during dust transport in one cycle of dust suction and the time required for transport.

Therefore, in the above embodiment, the vessel Be ₁ ,
Be ₂ is buried underground and provided in a state of being shielded from the outside world, and garbage thrown from each household or the like is shot Sh ₁ , S
Since it is put into the vessels Be ₁ , Be ₂ ... via h ₂ ..., dust is not dropped on the road and a bad smell of dust does not flow into the living space, and good environmental hygiene is maintained.

Then, at the time of dust collection, the transportation control means 42 controls the suction device 23 and the secondary air introduction means 41 to make the dust storage tank 10 and the vessel Bem negatively pressure, and then introduces the secondary air into the vessel Bem to introduce the vessel. Since the dust in the Bem is tumbled and transported to the dust storage tank 10 through the communication pipe D, the dust is reliably collected in the dust storage tank 10.

In that case, the transfer amount calculating means 43 obtains the dust transport amount m (j) based on the negative pressure value during dust transport in one cycle of dust suction and the time required for the dust transport, and this dust transport amount m (j ), The volume of dust in the dust storage tank is accurately calculated, and the remaining volume in the dust storage tank is accurately estimated from this dust volume. Therefore, the garbage collection tank 10 can be moved to the garbage disposal site after being almost fully filled, and the garbage can be collected accurately while considering the remaining capacity in the garbage storage tank.
Garbage collection will be done efficiently.

Second Embodiment The second embodiment has the same structure as the first embodiment except for the control unit. Therefore, the control of the control unit will be described based on the flow of FIG. That is, after the start, first, at step S ₃₁ , each closing gate I
₁ , I ₂ ... Are opened and each discharge gate E ₁ , E ₂ ...
And each inlet valve _{V 1, V} 2 _... Close. In this state, the garbage thrown in from each household or the like is collected in the vessels Be ₁ , Be ₂ ... Through the chutes Sh ₁ , Sh ₂ ,.

Next, in step S ₃₂ , the subscript m of an arbitrary vessel Bem is set to “0”, in step S ₃₃ the suction cycle count j is reset to “0”, and in step S ₃₄ m is counted by “1”. Up. With this, the vessel to be controlled becomes Be ₁ for the first time, and Be _1
2 , Be ₃ ... and so on. And, B in step S ₃₅
The input gate Im of the em is closed, the discharge gate Em is opened in step S ₃₆ , and the number i of suction cycles is set to “0” in step ₃₇ . In addition, in step S ₃₈ , the suction device 2
3 is turned on to start air suction. Then, in step S ₃₉ , the pressure sensor 25 detects the negative pressure value P _N at regular time intervals, and the time functional expression “P _N = f (t)” between the two points is detected.
Then, the differential value P ′ _N (negative pressure gradient) is obtained.

Thereafter, the suction cycle number i at step S ₄₀ "1" only counts up, this i is determined whether or not "1" in the step S _41, since the first is "i = 1", step S ₄₂ Then, it is determined whether the negative pressure value P _N has exceeded the set value Pa, and when the air suction progresses and P _N > Pa, the introduction valve Vm is opened in step S ₄₃ (state in FIG. 6). As a result, the secondary air introduction pipe Am is connected to the vessel Bem.
Secondary air is introduced to start tumbling of the dust, the negative pressure value suddenly drops, and a group of dust starts to enter the communication pipe D (states (1) to (6) in FIG. 6). On the other hand, then, in step S ₄₁ by the suction cycle number equal to or greater than twice "i
≠ 1 "and it is determined negative pressure value P proceeds to step S _44
It is determined whether _N exceeds the set value Pa, and when air suction advances and P _N > Pa, the closing gate Im is opened in step S ₄₅ , and the introduction valve Vm is opened immediately thereafter. That is,
Even if the number of suction cycles becomes two or more and the amount of dust in the vessel Bem decreases, the secondary air is introduced into the vessel Bem not only from the secondary air introduction pipe Am but also from the chute Shm and the dust is strongly tumbled. As a result, a group of dust will smoothly enter the communication pipe D.

Then, when a group of dusts completely enters the communication pipe D, the negative pressure value becomes substantially constant, and the group of dusts is sucked and transported to the dust storage tank 10 through the communication pipe D (states (1) to (6) in FIG. 6). ). Further, when a group of dust starts to enter the dust storage tank 10 and the dust in the communication pipe starts to break, the negative pressure value begins to decrease, and when the communication pipe D is emptied after transporting the dust, the negative pressure value becomes a substantially constant value. (States of to in FIG. 6). In this way, "one cycle of dust suction" is performed from the introduction of the negative pressure and the secondary air into the vessel Bem to the suction of the group of dust into the storage tank 10.

Thus, after the start of the "one cycle of waste suction" in the step S ₄₃ or step S _45, and waits for the elapse of a predetermined time in step S _46. Then, after a certain period of time has passed, in step S ₄₇ , the negative pressure value P _N and the differential value P ′ _N ,
P ′ _N−1 is fetched, and in step S ₄₈ , the differential value change amount | P ′ _N −P ′ _N−1 | is waited until it exceeds a predetermined amount “a”, and then “| P ′ _N −P ′ _N−1. When |> a ”, the process proceeds to step S ₄₉ . Here, the fact that the amount of change in the differential value exceeds a predetermined amount means that (1) when the negative pressure value drops at a dash and then becomes a substantially constant negative pressure value (state in FIG. 6).

(2) When there is already no dust in the vessel Bem and the negative pressure value suddenly becomes smaller than the predetermined value Pb after the introduction of the secondary air.

Is one of. Therefore, in step S ₄₉ , the negative pressure value P
_It is determined whether _N is smaller than the predetermined value Pb. Then, it is determined that when the "P _N ≧ Pb" is the rather "case (2)""(1)if" the process proceeds to step S _50. Then, in this step S ₅₀ starts counting of the timer TM in order to measure the time Tj required for waste transport in one cycle of the dust suction, counts up the count j of the suction cycle in step S _51. Further step S
_{At step 52} , the negative pressure value P _N is taken in, and this is used as the negative pressure value Pj during the transportation of dust. Then, again in step S _53, the negative pressure value P
_N and the differential values P ′ _N and P ′ _N−1 are fetched, and in step S ₅₄ , the differential value change amount | P ′ _N −P ′ _N−1 | is waited until it exceeds a predetermined amount “a”, and “| P ' _N- P' _N-1 |
> ”, The process proceeds to step S _55. That is, at this stage,“ | P ′ _N −P ′ _N−1 |> a ”means that“ a group of dust particles begin to enter the dust storage tank 10 and become negative. when pressure value began falling "can be determined that" (the state of the FIG. 6) 1 cycle of dust suction "(I in Figure 12) is determined to be complete. in other words, the timer T in step S ₅₅
The count of M is stopped, and the time Tj required for transporting the waste is obtained from this count.

Then, in step S ₅₆ , the volume value of the amount of dust transported by the current suction cycle, m (j), based on the negative pressure value Pj at the time of dust transport and the time Tj required for dust transport determined above.
Is determined by m (j) = {Pj × (Tj / To)} / α, and the amount of dust transported by each suction cycle m
By accumulating (j), the loading volume M, which is the dust volume in the dust storage tank, is obtained.

Thereafter, the closed immediately poured gate Im in the step S ₅₇ by closing the inlet valve Vm "1 cycle of waste suction"
(I in FIG. 12) is completed, and in preparation for the air suction in the next “one cycle of dust suction”, step S ₄₀
Return to and start the next "1 cycle of garbage" (II in Fig. 12).

In this way, while repeating "1 cycle of waste suction", if it is determined that "P N _<Pb" in step S ₄₉ determines that it is "(2) if". That is, the negative pressure value P _N becomes smaller than the predetermined value Pb when the differential value change amount | P ′ _N −P ′ _N−1 | exceeds the predetermined amount “a” for the first time in “one cycle of dust suction”. Therefore, this means that there is no dust in the vessel Bem, and in that case, "1 cycle of dust suction" (III in Fig. 12) is completed and the vessel Bem concerned is complete. It is judged that the dust suction has been completed, and step S ₅₈
To open the input gate Im and discharge gate Em
And suction valve Vm are closed to move to suction of dust from the next vessel. That is, in step S ₅₉ , it is determined whether or not the subscript m is the final number. If it is not the final number, the process returns to step S ₃₄ and the above process is repeated for the next numbered vessel. On the other hand, if it is the final number, step S
Proceeding to ₆₀ , the suction device 23 is turned off to stop the air suction.

In the above flow, in steps S _{33 to} S ₄₅ , the dust containing tank 10 and the vessel Bem are made to have a negative pressure, and then the secondary air is introduced into the vessel Bem to make the vessel Bem Bem.
Of the suction device 23 and the secondary air introduction means 41 so as to transport the dust of the above to the dust storage tank 10 through the communication pipe D.
Transport control means 42 'for controlling Also,
In steps S _{50 to} S ₅₆ , the output of the negative pressure detecting means (pressure sensor) 25 is received, and the amount of transported dust is calculated based on the negative pressure value during transportation of the dust in one cycle of the dust suction and the time required for the transportation of the dust. It constitutes a transportation amount calculating means 43 '.

Therefore, in the second embodiment, as in the first embodiment, good environmental hygiene can be maintained and dust can be reliably collected in the dust storage tank 10.

In this case, the transportation amount calculating means 43 'obtains the transportation amount m (j) of the dust based on the negative pressure value during the transportation of the dust in one cycle of the dust suction and the time required for the transportation, and the transportation amount m (j Since the loading volume M is obtained from j), the volume of dust in the dust storage tank is accurately calculated, and the remaining volume in the dust storage tank is accurately estimated from this dust volume. Therefore, the garbage collection tank 10 can be moved to the garbage disposal site after being almost fully filled, or the garbage can be collected accurately while considering the remaining capacity in the garbage storage tank, and the garbage can be collected efficiently. Will be done.

Further, when a group of dust starts to enter the dust storage tank 10 and the negative pressure value starts to decrease (state of FIG. 6), the suction cycle is completed and the next suction cycle is started. When the suction and transportation of dust ends and the negative pressure value begins to drop, that is, while the negative pressure value is still sufficiently large, the dust suction of the cycle is finished and the dust suction of the next cycle starts. In the next cycle, the negative pressure rises quickly and the time required to empty the vessel is shortened.

(Effects of the Invention) As described above, according to the dust suction / transport device according to the present invention, the vessel in which dust is stored, the secondary air introduction unit that introduces the secondary air into the vessel, and the dust suction truck And a suction device for reducing the pressure of the waste storage tank and the vessel to a negative pressure, and the waste storage tank and the vessel are connected to the vessel via a communication pipe. The secondary air is introduced into the vessel to transport the waste in the vessel to the waste storage tank through the communication pipe, and the waste is transported based on the negative pressure value during the one-cycle dust suction and the time required for the waste transport. Since the amount is determined, it is possible to reliably collect dust while maintaining good environmental hygiene, and the volume of dust transported during one cycle of dust suction is accurate. It is possible to efficiently collect dust by accurately estimating the remaining capacity in the dust storage tank based on this.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of the present invention. 2 to 10 exemplify the first embodiment of the present invention, FIG. 2 is an overall schematic configuration diagram, FIG. 3 is a vertical side view of the vicinity of a vessel, and FIG. 4 is an enlarged view of a garbage suction truck. FIG. 5 is a flow chart for explaining the control of the control unit, FIG. 6 is an explanatory view showing one cycle of dust suction, FIG. 7 is an explanatory diagram showing the relationship between the dust suction amount and the negative pressure value, and FIG. Is an explanatory view showing a transportation state of dust in the communication pipe, FIG. 9 is an explanatory view showing a measurement period of the transportation time of the dust, and FIG. 10 is an explanatory diagram showing a process until dust suction is completed in one vessel. is there. 11 and 12 exemplify a second embodiment of the present invention, FIG. 11 is a flow chart for explaining control of the control unit, and FIG. 12 shows a process until dust suction is completed in one vessel. It is an explanatory view shown. Be ₁ , Be ₂ ... Vessel D ... Communication pipe C ... Dust suction vehicle 10 ... Dust storage tank 23 ... Suction device 25 ... Pressure sensor (negative pressure detection means) 41 ... Secondary air introduction means 42 ... Transport control means 43 ... Transport Quantity calculation means 42 '... Transport control means 43' ... Transport quantity calculation means

Claims (1)

[Claims] 1. A vessel for storing dust, a secondary air introducing means for introducing secondary air into the vessel, a dust storage tank mounted on a dust suction vehicle and connected to the vessel via a communication pipe. A suction device for reducing the pressure of the waste container and the vessel to a negative pressure; and a second chamber for introducing a secondary air into the vessel after reducing the pressure of the waste container and the vessel to collect the waste in the vessel through the communication pipe. And a transportation control means for controlling the suction device and the secondary air introducing means so as to transport the negative pressure detection means for detecting a negative pressure value by the suction device, and an output of the negative pressure detection means, A waste suction / transport device comprising: a transportation amount calculating means for determining a waste transportation amount based on a negative pressure value during transportation in one cycle of dust suction and a time required for the waste transportation.