JPH0449475Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to an operating device for a combustion type deodorizer that deodorizes the odor-filled gas generated during excretion work of a vacuum truck by combustion.

PRIOR TECHNOLOGY The odorous gas generated during excretion work using vacuum trucks causes discomfort to workers and nearby residents, and the toxic components such as hydrogen sulfide contained in the gas are harmful to the human body. Removal of this odorous gas is an important social problem in Japan, where sewage facilities are not yet fully developed and human waste collection work is essential.

In the past, attempts have been made to remove odorous gases using various methods, but the best results have been found in burning the odorous gases to remove toxic components and making them odorless before releasing them into the atmosphere. is bringing about.

Figure 3 shows an example of a vacuum device for a vacuum vehicle using a combustion deodorizer, in which 1 is a human waste tank, 2 is a main manhole, 3 is a suction/exhaust switch, and 4
is a steam/water separator, 5 is a one-way valve, 6 is an oil circulation vacuum pump, 7 and 8 are oil separators, 9 is an oil purifier, 10 is an oil pipe, 11 is a combustion type deodorizer, 12 is an exhaust stack , 13-21 indicate air piping.

In the vacuum device of the vacuum vehicle mentioned above,
When the vacuum pump 6 is operated with the suction/exhaust switch 3 set to neutral, the vacuum pump 6 sucks air from the intake port and discharges it under pressure from the exhaust port. Air circulates to the vacuum pump 6 through the separator 7, piping 18, oil separator 8, piping 19, suction/exhaust switching pot 3, piping 14, steam/water separator 4, piping 15, one-way valve 5, and piping 16. be done. In this state, when the suction/exhaust switch 3 is switched from neutral to suction, the air in the human waste tank 1 flows from the main manhole 2 to the piping 13, to the suction/exhaust switch 3, as shown by the solid line arrow in FIG.
It passes through the piping 14 and flows into the steam separator 4, where the moisture in the air is separated, and only the air is sent to the piping 1.
5, one-way valve 5, pipe 16 to enter vacuum pump 6, which then passes pipes 17 and 18 to oil separators 7 and 8. Here, the oil contained in the air is separated in the vacuum pump 6,
Air only piping 19, suction/exhaust switching pot 3, piping 2
0 and flow into the combustion type deodorizer 11. Then, the odorous gas in the exhaust gas is burned to remove toxic components and make it odorless, and the thus deodorized air passes through the pipe 21 and is discharged into the atmosphere from the exhaust stack 20. As a result, air is removed from the human waste tank 1, the pressure is reduced, and the human waste is sucked in due to the pressure difference in the atmosphere. Note that the oil separated by the oil separators 7 and 8 is cleaned by an oil purifier 9 on the way, passes through an oil pipe 10, and flows into the vacuum pump 6 again. Next, when the suction/exhaust switch 3 is switched to discharge, the air in the atmosphere flows from the exhaust pipe 12 to the piping 21, to the combustion deodorizer 11, as shown by the broken line arrow in FIG.
Piping 20, suction/exhaust switching pot 3, piping 14, steam/water separator 4, piping 15, one-way valve 5, piping 16, vacuum pump 6, piping 17, oil separator 7, piping 1
8, the oil separator 8, the piping 19, the suction/exhaust switching pot 3, and the piping 13, and are pumped into the human waste tank 1 from the main manhole 2. As a result, the human waste tank 1 is pressurized and the human waste stored therein is forcibly discharged.

Problems to be Solved by the Invention By the way, in the conventional vacuum device of the vacuum vehicle mentioned above, the suction/exhaust switching operation of the suction/exhaust switching knob 3 and the combustion operation of the combustion type deodorizer 11 are different, and therefore the workability is reduced. The drawback was that it was bad. That is, since deodorization is necessary during suction operation, the combustion type deodorizer 1 is
1 was ignited and extinguished. Therefore, if the combustion type deodorizer 11 is burnt during operation, the workability is improved, but it is not only uneconomical but also causes the trouble of extinguishing the fire during the discharge operation.

The purpose of this invention is to provide an operating device for a combustion type deodorizer in a vacuum vehicle that solves the above problems.

Means for solving the problem In order to achieve this purpose, this invention ignites and ignites a combustion type deodorizer in conjunction with the on/off operation of the PTO switch.
The first step is to ignite the combustion deodorizer in the circuit to extinguish the fire.
A limit switch and a second limit switch for extinguishing the combustion deodorizer are provided, and the first limit switch is installed so as to operate when the suction/exhaust switching lever is operated to the suction side, and the second limit switch is installed so that the suction/exhaust switching lever is moved to the exhaust side. We have taken technical measures to install it so that it will operate when operated.

Effect: According to the above means, the combustion type deodorizer can be ignited and extinguished in conjunction with the suction/exhaust switching operation of the suction/exhaust switching switch.

Embodiment This invention will be explained below based on the embodiment shown in FIGS. 1 and 2. However, in order to simplify the explanation, parts having the same functions as those in FIG. 3 are given the same reference numerals, and the explanation thereof will be omitted.

FIG. 1 is a perspective view showing an embodiment of the operation device for a combustion deodorizer in a vacuum vehicle according to this invention, in which 22 is a suction/exhaust switching lever connected to the suction/exhaust switching cock 3 via a rod 23; 25 is an actuation plate fixedly attached to the rod 23, and 25 is a first limit switch installed so as to be actuated by the actuation plate 24 when the suction/exhaust switching lever 22 is operated to the suction side.
26 is a second limit switch mounted so as to be activated by the operating plate 24 when the suction/exhaust switching lever 22 is operated to the discharge side, and 27 is a PTO switch installed in the driver's cab of the vacuum vehicle.

Figure 2 is a wiring diagram of the electric circuit of the operating device for the combustion deodorizer in the vacuum vehicle according to this invention.
28 is a fuse, 29 is a deodorizer operating switch provided on the deodorizer operation panel installed in the cab of the vacuum vehicle, 30 is a switch that operates in conjunction with the first limit switch 25, and 31, 32, 33 are first to The third relay, 34, 35, 36 is a normally open contact of the first to third relays 31, 32, 33, 37
is a contact point of the normally closed third relay 33, and these electrical components are connected as shown in FIG. 2 to form an operating circuit.

In the above configuration, when the PTO switch 27 is turned on with the suction/exhaust switch 3 in neutral, the PTO switch 27 passes through the power fuse 28 and PTO switch 27.
Current flows through the O operating circuit, which drives the vacuum pump, etc., and activates the vacuum device. On the other hand, from the power supply, fuse 28 and PTO switch 27
Current flows through the first relay 31, which closes its contacts 34. In this state, when the deodorizer operation switch 29 is turned on, the fuse 2 is connected to the power supply.
8. Operation switch 29, contact 3 of first relay 31
4. Current flows through the contacts 37 of the third relay 33 to the second relay 32, which closes its contacts 35. Then, current flows from the power supply through the fuse 28 and the contact 35 of the second relay 32 to the combustion type deodorizer 11, whereby the combustion type deodorizer 11 ignites and burns.

Next, when the suction/exhaust switching lever 22 is switched from neutral to the suction side, the suction/exhaust switching lever 3 is switched to suction via the rod 23, and at the same time, the first limit switch 25 is turned on by the actuating plate 24. Switch 30 turns off. Then, from the power supply, fuse 28, operation switch 29, and first relay 31 are activated.
through the contact point 34 and the limit switch 25.
Since current flows through the relay 32, the combustion type deodorizer 11
continues to burn. After that, the suction/exhaust switching lever 22
When the valve is returned to neutral, the suction/exhaust switch 3 returns to neutral via the rod 23, and at the same time, the first limit switch 25 is turned off and the switch 30 is closed in conjunction with this. Then, the combustion type deodorizer 11 burns in the same manner as when the intake/exhaust switching lever 22 is in the neutral position.

Next, when the suction/exhaust switching lever 22 is switched from the neutral to the discharge side, the suction/exhaust switching lever 3 is switched to discharge via the rod 23, and at the same time, the second limit switch 26 is turned on by the operating plate 24, and the fuse 28, Operation switch 29, first relay 31
through the contact 34 and the limit switch 26
Current flows through relay 33, which causes its contacts 3
6 closes and the contact 37 opens. Then, the second
The current flowing through relay 32 is cut off and contact 3
5 opens, the current flowing through the combustion type deodorizer 11 is cut off, and the combustion type deodorizer 11 is extinguished. Thereafter, when the suction/exhaust switching lever 22 is returned to neutral, the suction/exhaust switching lever 3 returns to neutral via the rod 23, and at the same time, the second limit switch 26 is turned off. At this time, even if the second limit switch 26 is turned off, the fuse 28, the operation switch 29, the contacts 34 of the first relay 31, the switch 30, and the third relay 33 are
Current flows through the contacts 36 to the third relay 33, and the third relay 33 is self-held until the PTO switch 27 or operation switch 29 is turned off, or the suction/exhaust switch 3 is switched to suction, so that combustion does not occur. The type deodorizer 11 does not burn, unlike when the suction/exhaust switching lever 22 is in the neutral position.

Effects of the invention According to this invention, the combustion type deodorizer can be ignited and extinguished in conjunction with switching the suction/exhaust switching lever using the suction/exhaust switching lever, thereby improving work efficiency. This eliminates the need to burn the combustion type deodorizer during the excrement work of the vacuum vehicle as in the past, which is economical and also prevents the trouble of extinguishing the fire during discharge operation.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the operating device for a combustion deodorizer in a vacuum vehicle according to the present invention;
FIG. 2 is a wiring diagram of the electric circuit. FIG. 3 is a schematic diagram illustrating an example of a vacuum device for a vacuum vehicle. 3... Suction/exhaust switching switch, 11... Combustion type deodorizer, 22... Suction/exhaust switching lever, 23... Rod,
24... Operating plate, 25, 26... Limit switch, 27... PTO switch, 29... Operation switch, 30... Switch, 31, 32, 33...
Relay, 34, 35, 36, 37...Relay contact.

Claims (1)

[Scope of Claim for Utility Model Registration] A circuit that ignites and extinguishes the combustion deodorizer in conjunction with the on/off operation of the PTO switch includes a first limit switch that ignites the combustion deodorizer and a second limit switch that extinguishes the combustion deodorizer. The first limit switch is installed to operate when the intake/exhaust switching lever is operated to the suction side, and the second limit switch is installed to operate when the intake/exhaust switching lever is operated to the exhaust side. An operating device for a combustion deodorizer in a vacuum vehicle.