JPS5917404A - Method and device for preventing freezing and adhesion of dust in transport pipe in air transport of municipal dust - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a method and device for preventing garbage from freezing and adhering to a transportation pipe, which prevents garbage from freezing and adhering to the inner wall of a transportation pipe when installed in a district.

As shown in Figure 1, the conventional pneumatic transport system for municipal waste has several waste storage facilities (garbage posts) located at strategic locations on street corners (1α) (1b) (1c) (
1dl (1e) (1/) (i+7) and connect the supply valves (3) to the transport pipes (2a) buried underground.
c) (3b) (3C) (3d) (3e) (3
f) [3 (7) connected via the - delivery pipe (2α)
to a busy conveying pipe (2b) connected to a cyclone (7) which is a primary separator in a one-inch collection station (6) located in a common ditch (4) or buried underground;
Shutoff valve (5 (Z) (5bJ (5c) (5dl)
The collection station (6) is connected to the cyclone (7), the banog filter (8), the waste removal device (9), and the air source (blower) in sequence through the air pipe (II). The second flow side of the air source 00 is connected to the siren valve via the air intake valve, and the air pipe on the downstream side of the air pipe is connected to the air intake valve via the air intake valve. This is a configuration in which the air source is opened to the atmosphere.
As an example, there are 4 units, 2, 1 unit, but 1 unit is reserved, and a system is also adopted in which the jR odor device (9) is installed after the air source (+1.0).

When driving, please open the fire intake valve and disconnect the air source if garbage is temporarily stored in the garbage storage facility.
k 1, open the supply valve (5a) of the designated garbage storage 7/1li1 role (for example (1α)) according to the specified program, and close the atmospheric suction valve 0 of ``2''. The garbage stored in the garbage storage facility is pumped into the atmosphere (1), sucked through the supply tank (3α), and transported to the transport pipe (2).
a, ) (2b) Yen money and result status = 7yo/(6)
It is sent to the cyclo/(7) where it is separated from the air. The air containing dust is led to the bag filler (8), and after the dust is removed, it is sent to the deodorizing device (9).
The waste is deodorized in the air pipe (via air source 00 via 111) and is then pressurized and discharged to the atmosphere via the silencer Q5+.On the other hand, the waste collected in the cyclo/(7) is sent to the collection drum. The awns can be transferred to a transport vehicle.

In this way, when the garbage stored in one garbage storage facility is collected, the garbage storage facilities are sequentially switched to other garbage storage facilities to automatically collect and transport the garbage.

As mentioned above, conventional pneumatic transportation equipment for municipal waste is capable of vacuum collecting garbage that has been input and stored, but it is not possible to collect waste in a vacuum, but it is possible to collect the collected waste in a vacuum, but it is not possible to do so in the severe cold where the temperature drops from -110℃ to -40℃1. If garbage collection and transportation is carried out in an area where waste is expected to reach a certain point, the following problems may occur. In other words, in the case of 4 o'clock, the transport pipe that connects the garbage storage facility and the collection station 7 is buried in a certain depth and is kept at a higher temperature than the atmosphere, but when the garbage is transported under vacuum, the inside of the transport pipe is When the atmosphere is inhaled, cold air of -10°C to -40°C flows into the transport pipe, thereby cooling the inside of the pipe. Therefore, (a) the inner strength of the transport pipe decreases;

When transporting garbage containing sewage (moisture), when this garbage comes into contact with the cooled inner wall of the pipe, it immediately freezes and adheres to the inner wall of the pipe.

←→ If the operation time is long, especially the part of the transport pipe near the collection stay 7 should not be exposed to cold air for a long time.
The phenomenon of dust adhesion becomes more pronounced due to cooling.

(ii) When dust adheres to the inner wall of the paulownia pipe, an uneven surface is created on the inner wall of the pipe, and this is formed throughout the pipe, which increases the frictional resistance of the pipe due to air flow. ,
Not only does the power consumption of the air source (blower) increase, resulting in increased energy consumption, but there is also a risk that it may become inoperable.

(If a part of the 11 capture pipe is placed in a common ditch, there will be no exchange of underground heat compared to a 1 pipe buried underground, so it will freeze even more.)
・The 1-year phenomenon becomes noticeable. This is because the inside of the common ditch is constantly ventilated and the temperature is almost at the fire temperature, so the transport pipe is exposed to cold air both inside and outside.

(f) In the case of underground pipes, debris that has formed on the inside wall of the pipe during transportation is transferred to the bottom of the pipe by underground heat after the operation is completed, but in the case of a pipe in a public ditch, it is deposited in the frozen trench. It has become. Therefore, during the next operation, the garbage accumulated at the bottom of the pipe 1 will be transported at the same time, increasing transport resistance. Moreover, since the operation starts with the inside of the common ditch already frozen and adhered from the previous operation, the resistance becomes even stronger, and the amount of frozen debris increases, resulting in the worst case scenario: pipe blockage and/or stem operation stoppage. I will be introducing.

The purpose of the present invention is to eliminate the above-mentioned problems that may occur when an air-free transportation system for municipal waste is installed in a cold area, and uses the exhaust heat temperature of the air source. This increases the air temperature within the transport pipe and prevents freezing and adhesion.

Embodiments of the present invention will be briefly described below with reference to the drawings.

Figure 2 shows an overview of the equipment used in this study. Compared to the case shown in Figure 1, when the transportation pipeline network is more complex and there is a common ditch (4), these can be collected. Stay/Yo/
(6) The kJiltl of the present invention is placed on a lifting platform that is far away from. To explain in detail, each transport pipe (2b) has a cutoff valve (
5(Z) L5bl [5c) (5dl) Multiple transport pipes (2α) connected to the long shaft through (5e) have multiple branch pipes (2c) all branched, and garbage is stored in each branch pipe (2c). facility(
Install 1a) to (1n) and connect each transport pipe! 2(L)'(
! - Lines A, B, C, D, and E are arranged sequentially from left to right on the diagram, while the collection stay/cono (
6) is the same as the conventional method shown in Fig. 1, by connecting the Zyclone (7), hang filter (8), deodorizing device (9), and air source (10) with an air pipe (11). An air intake valve 021 and a silencer (13) are installed on the intake side, and an air pipe (1・υ,
In the configuration in which the silencer 05) is connected, the air pipe (1
υ and 04) are connected via a bypass pipe (ILj), and a collecting air source 00) is connected in the middle of the bypass pipe 0.
A small air source 07) separate from the air source 07) is installed exclusively for cleaning, and valves 0 and (04) are installed on the air pipe 0υ side and 04) side of the bypass pipe 0 [N to which the suction l111 of the air source 0 is connected, respectively. 19), and connect the discharge side of the air source 071 to the A-line to E-line @j feed pipe (2a) with a suction line that has a discharge valve (A) and a pressure gauge C='71 in the middle. Disconnect each connection, and the suction lie/CO)
A valve 12]) is provided on the pipe network side, that is, on the connection side to each transport pipe (2a). or,
Between the valley lines of the pipeline network, there is a Y opening as shown in the diagram, A line and B line.
The ends of the line and the C line are connected with a piping cable, the ends of the C line and the D line are connected with a pipe 4, and the ends of the 1] line and the E line are connected with a pipe.

0υ indicates a switching valve.

With the above configuration, the method for preventing dust from freezing and adhering to the inner surface of the pipe is operated as follows.

(I) @In the case of pipeline cleaning operation After the collection operation is completed, open the air intake valve (1z1 valve 08), (A), υ (4)
Open the stop valves (to) (b), and then open the shutoff valves (5α) to (5e).
) is opened, and the bypass pipe 0■ valve (19) and the switching valve Cυ are placed separately in a striped shape 4 and a small dedicated air source 07 is installed.
+ is raised: ll) r-, J". As a result, air is inhaled through the silencer (14, atmospheric intake valve 07Jt), bypasses the collecting air source (1 (a), and is sent to the air source (IQ) from the bypass pipe (IQ). 177, the pressure is increased and the blowing line (2
0) and is exhausted into the transport pipe network of each line via each valve 1211 @in (to) □□□. In this case, throttle the discharge valve G41N, adjust the adiabatic temperature, and vary the temperature as necessary.
Make sure that the temperature of the exhaust air is low.

By having the dedicated air υI discharge C1 force of exhaust gas into the pipe country, air with a temperature of one degree higher accumulates within the pipe network, and since there is no way for this air to escape, the pressure also rises. This pressure is detected by a pressure gauge @, and when a certain pressure is reached, the dedicated air source zero power is stopped and all valves are closed. Each waste storage facility's A[ is also closed as 11, so the pipe (1
During the month, the air has become contained.

After a certain period of time, the garbage frozen on the inner surface of the pipe will melt and accumulate at the bottom of the pipe, so next, use the regular collection operation method to collect waste in each line from A line to E line in order. Air is sucked in from the facility and the debris that has accumulated at the bottom of the pipes is removed using air to clean the pipe network.

In the above operation, the present invention uses a separate small air source θ71 in addition to the collecting air source θQ, so the power required is smaller than when using the collecting air source 00. The connecting line (A) can also be a thin pipe, which can eliminate waste of equipment.

In addition, in the above operation, it is possible to provide an outlet to the atmosphere at the farthest end of the pipe network so that the air source (171) can be operated continuously and the exhaust gas blown in can be gradually discharged from the outlet. , the temperature inside the pipe can be maintained at a certain temperature.

■) In the case of a collection operation using a dedicated air source q-force During the collection operation of garbage, this operation attempts to raise the temperature of the air used for transportation as much as possible to prevent freezing inside the pipes.

That is, before starting the actual operation, the dedicated air source is activated in the same manner as explained in (1+) above to raise the temperature in the pipe network in advance.

When the collection operation time arrives, the switching valve 0υ and the atmospheric suction valve (
la'! At the same time as L-Open, bypass pipe OeM valve (
+9), open the discharge valve (A) and drive the collection air bone section with valve α8J closed. The air used for this purpose passes through a silencer (13), an air suction valve a4, is sucked into an air source (10, and is pressurized here to an air pipe q4), and is discharged to the atmosphere through a silencer Q5.

Next, check the isolation valve (5a) for the A line, which is the first collection line.
) to open and collect garbage storage facility (garbage pos) J (
11++ air intake valve (not shown) and at the same time open the valve @
Fully open and drive the dedicated air source 07.

Next, when the air intake valve (6) is closed, air flows in from the air intake valve of the waste storage facility (1b), and at the same time, a portion of the exhaust gas whose temperature has increased from the air source OQ flows to the valve 0! The dust is sucked into the dedicated air source 07) through the blow line (a), enters the B line through the piping (c), enters the end of the A line through the piping (c), and is combined with the suction air to reach the waste storage facility (1b). ) is transported to the collection station (6). in this case,
Since the waste in the waste storage facility (1b) is transported by a mixture of the atmosphere and warmed air inserted by the dedicated air source α, the transport air itself becomes higher than the atmospheric temperature, and therefore the pipe line It is possible to prevent internal freezing.

When the collection of garbage at the garbage storage facility (1b) is completed, the valve of the next garbage storage facility (1α) opens, and the garbage storage facility v (1b) opens.
) and valves are closed. This will result in a waste storage facility (
1α) is transported to the atmosphere and to the connection point (3) between the transport w (2a) and the branch pipe (2c). The transportation time to this point X is set using a timer, etc., this time is detected, and the valve (a) is opened. As a result, the heated air is again inserted from the waste storage facility (1b) at the end, and is combined with the suction atmosphere at point ).

Since the length of the pipe (2c) branched from General 1 and 4 is very short, during this period of transporting the waste, even though the dedicated air source θ continues to be driven, only one B line Since it becomes an air tank, there is no possibility of over+y-1゛. If there is a possibility, install the bypass valve (
(not shown) may be provided.

When the collection of garbage from the garbage storage facility (1a) is completed, the next step (
・Open the second shutoff valve (5b), open the valve QD, and open the waste storage facility (
When valve 1e) is opened and valve @ is closed, IIV of B line
u<Operation is started, and the heated air now passes through the A line and is sent to the terminal waste storage facility (1e) via the piping.

Therefore, the waste in the waste storage facility (1e) is transported to the collection station (6) together with this heated air and the atmosphere drawn from the storage facility (1e).

In the same way, the garbage from the garbage storage facility (1d) and (iC) is transported, and after the collection and transportation of the B line is completed, the garbage is transported to the C line and the D
Drive to line and E line.

In the present invention, as described below, the terminal storage facility part of each collection block is connected with a separate pipe @ (8) (c), and the heated air is used as part of the collected air, but this separate pipe Depending on the shape of the pipe network, the connection method for the A line does not necessarily have to be at the terminal end, and the operation order for the A line is the waste storage facility, (
1a) may be placed before (1b).

As described above, according to the present invention, a pipe is provided to bypass the collection air source, a small dedicated air source is connected to the bypass pipe, and the exhaust air from the dedicated air source is sent to the pipe network, Since the temperature of the conduit air is raised and collected, the following effects can be achieved.

(1) Even if moisture-containing debris freezes and adheres to the inner surface of the transport pipe, it can be removed and cleaned before the next operation.

(11) When transporting air mixed with humidified exhaust air, it is possible to prevent a drop in the temperature on the inner surface of the transport pipe, so that the phenomenon of freezing and adhesion is less likely to occur.

1ii1 Since frozen deposits on the inner surface of the transport pipe do not accumulate, there is no need to increase power due to an increase in air resistance.

(1v) Since exhaust heat from the air source is used, it is also part of energy saving measures.

(vl) Since a dedicated air source is used, it is smaller and requires less power than when a collection air source is used.

(vl) It is very effective when applied to extremely cold regions.

[Brief explanation of drawings]

Figure 1 is a flow sheet for the conventional urban waste pneumatic transportation system.
FIG. 2 is a flow sheet of a municipal waste pneumatic transportation system showing an embodiment of the present invention. (1a) 〜(in) −・ Garbage storage facility, (2α
) (2b) - Transport pipe, (6)... Collection station, 00... Collection air source, OQ... Bypass pipe, 0
7)...Dedicated air source, (a)...Blowing line.

Claims (1)

[Scope of Claims] 1) When the collection operation is stopped, such as before the start of the collection and transportation of municipal waste or after the completion of the collection and transportation, the collection air source is an air source that sends the exhaust air from the air source installed at 9i to the pipe, excavation, A method for preventing the freezing and adhesion of waste in a transport pipe when transporting urban waste by air, the method comprising increasing the air temperature in the pipe and then suctioning the air with a nest collecting station 1. 2) In a device designed to aerate air at the collection station 1, the collected urban waste input into the waste storage and trade facility is transported into the transport pipe (!-), and the collection air source built into the device is an air source other than the collection air source is connected to the bypass pipe, and the discharge fl:l 1+111 of the separate air source is communicated with the pipe network; A device for preventing the freezing and adhesion of waste in transport pipes in pneumatic transport of municipal waste, characterized in that it is purchased so that the exhaust air from the separately installed air source can be blown into the pipe network.