JPS5996417A - Exhaust gas purifying device - Google Patents

Abstract

PURPOSE:To obtain an exhaust gas purifying device with a simple structure by connecting a purifying device equipped with a filter in itself to the exhaust pipe of an internal-combustion engine, jetting water from a storage tank to an exhaust gas passage, and returning the recovered effluent to the storage tank after filtrating it. CONSTITUTION:A purifying device A equipped with a filter 3 in itself is connected to an exhaust pipe 4, and an injection nozzle 6 is provided in air exhaust gas passage. Dust and detrimental matter in exhaust gas are allowed to be absorbed by the filter by injecting the purifying water from a storage tank 5 and evaporating said water by making use of exhaust heat and allowing exhaust gas and vapor to make contact with each other. A fluid fraction collected on the bottom part of the purifying device A and a fluid fraction of the fluid collector 8 of the exhaust pipe 7 are, after filtrating them through a fluid filter 9, returned to the storage tank 12 by means of a pump 12. Since the purifying water is evaporated in this way by making use of exhaust gas itself, the purifying device is simple in its structure, and it is not required to always supply the purifying water since it is circulated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an exhaust gas purification device that evaporates cleaning water using exhaust heat from an internal combustion engine and brings the water vapor into contact with exhaust gas to absorb dust and harmful substances.

Exhaust gas purification equipment that removes harmful substances such as Co, CO2, NOx, and dust from the exhaust gas of automobiles, etc.
This is done using catalysts, etc., but the structure is complex and expensive.

An object of the present invention is to provide a purifying device that is less expensive and more efficient by bringing exhaust gas into contact with water vapor.

That is, in the exhaust gas purification device of the present invention, the exhaust pipe of an internal combustion engine is connected to a purifier filled with a filter, and an injection nozzle connected to a cleaning water storage tank is exposed to the exhaust gas path, and the exhaust gas is removed from the bottom of the purifier. The drain pipe is connected to the liquid filter through an adjustable drain valve, while a liquid recovery device is installed in the exhaust pipe of the purifier, and this liquid recovery device is also connected to the liquid filter. , a liquid filter is connected to the storage tank via a pump.

With this configuration, the cleaning water sprayed from the spray nozzle is evaporated by the exhaust heat and becomes water vapor, and this water vapor comes into contact with the exhaust gas to absorb dust and harmful substances. As the temperature and pressure are lowered, further purification and gas-liquid separation are carried out, and the separated liquid passes through a drain valve and is filtered in a liquid filter, and then returned to the storage tank. After purification, the exhaust gas from the purifier is recovered with a liquid collector, and then released into the outside air.The liquid passes through the liquid filter and returns to the storage tank.Therefore, the exhaust gas itself The one-piece structure for evaporating the cleaning water is simple and inexpensive, and since the cleaning water is circulated, there is no need to constantly supply the cleaning water, making the operation easy.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in Fig. 1, the inside of a sealed container 1 constituting a purifier A is partitioned into several groups in the length direction by partition walls 2. filter 3
is filled. It is necessary to use a heat-resistant filter with large pores for the filter filled in the first chamber 3a to prevent clogging. Examples include porous ceramic plates, activated carbon fiber filters, metal filters, and resin filters. Alternatively, a composite of these may be used, and a single gold membrane filter made by laminating porous coil plates as shown in FIG. 2 may be adopted. From the second chamber 3b onward, the holes should be made gradually smaller by +1, and the one corresponding to the substance to be removed should be selected appropriately. Select as appropriate. The container 1 is provided with a lid that can be opened and closed as appropriate, so that the filter 3 can be replaced.

The exhaust pipe 4 of the internal combustion engine is connected to the first chamber 3aH of the purifier A, and an injection nozzle 6 connected to the cleaning water storage tank 5 is provided. A recess 4 is formed in the tube 4.

An injection nozzle 6 is also appropriately provided in the upper part of the second chamber 3b.

A liquid recovery device 8 is interposed in the exhaust pipe 7 of the purifier A, and the liquid content in the purified exhaust gas is removed by the recovery device 8, and clean and dry gas is released to the outside air. . The recovered liquid fraction C1 is introduced into the liquid filter 9.

Drainage pipes 1o are provided at appropriate locations on the bottom of the purifier A,
Each of these pipes 10i;x is connected to a liquid source filter 9 with an automatic drain valve 11 interposed therebetween. The liquid source filter 9 (connected to the storage tank 5 via the bomb 12) recovers the washed and purified water, which is then returned to the storage tank 5 after being filtered.

-Is the embodiment configured as described above? Next, we will explain its function.

Now, when exhaust is exhausted from the internal combustion engine into the exhaust pipe 4, cleaning water is ejected from the nozzle 6, and the mist water becomes water vapor due to the heat of the exhaust gas, comes into contact with the exhaust gas, absorbs dust and harmful substances, and is released into the exhaust gas. It also flows into the purifier A. One water droplet that does not turn into water vapor accumulates in the recess 4' and evaporates due to exhaust heat, contributing to the purification effect of the exhaust gas. The exhaust gas that has entered the purifier A (this is further injected with cleaning water, passes through the filters 3 in each chamber, and reaches the exhaust pipe 7.
The filter 3 lowers the temperature and reduces the pressure of the exhaust gas, and also performs purification and gas-liquid separation. Since it is desirable that this pressure reducing action does not apply a large back pressure to the internal combustion engine, the coarseness of the filter 3 should be determined in consideration of these factors.

The liquid accumulated at the bottom of the purifier A is appropriately discharged by the adjustable drain valve 11 and sent to the liquid source filtration device 91.
The liquid collector 8 in the exhaust pipe 7 also collects the liquid component of the exhaust gas, which is then sent to the liquid source filtration device 91, where harmful substances and dust are removed and the dried exhaust gas is sent into the air. .

Cleaning water filtered by the filter 9 (is pumped into the storage tank 5 at appropriate intervals by the pump 12. Pump 1
2 may be operated at fixed time intervals using a tie or the like, or may be operated automatically according to the amount of filtration of the filter 9. By collecting and circulating the wash water in this way, there is less loss of wash water and less work is required to supply the wash water.

As shown in FIG. 3, if a cartridge type is used in which the container 1 and the container 1 having the filter 3 can be separated, the filter 3 can be replaced with one touch.

In addition, in the above embodiment 2, the injection nozzle 6 was provided in the exhaust pipe 4 of the internal combustion engine, but as the primary treatment of the exhaust gas,
It is also possible to stop the water injection and use only the filter to capture harmful contaminants, and then perform the cleaning action by spraying the washing water. In the embodiment shown in FIG. 1, the nozzle 6 provided in the exhaust pipe 4 is removed, leaving only the nozzle 6 facing the upper curve of the second chamber 3b.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an embodiment of the exhaust gas purification device of the present invention, FIG. 2 is a perspective view of an example of the filter shown in FIG. 1, and FIG.
Figure Ii is a partially cutaway front view of the other side of the purifier. 3... Filter, 4... Exhaust pipe, 5... Storage tank, 6... Injection nozzle, 7... Exhaust pipe, 8...
Liquid recovery device, 9... Liquid source filter, 11... Mechanical drain valve, 12... Pump. Patent Applicant Masaru Kanayama Attorney Kama 1) Text 2 Written Amendment (Maji) 1. Display of the case Patent Application No. 207992 of 1982 2, Name of the invention Exhaust gas purification device 3, Person making the amendment Relationship to the case Patent applicant Address 75 Kitayama, Okubo-cho, Uji-shi, Kyoto Name: Masa Kanayama City 5゜Monday/Day, Showa (Despatch seal 6, Number of inventions increased by amendment 7, Description subject to amendment 8, Contents of the amendment as shown in the attached sheet. Contents of the amendment Page 3, line 8 and Add the following sentence between lines 9. 1゜In addition, since gas-liquid mixing is performed using an injection nozzle, the purification efficiency does not change even if the device itself is tilted.Therefore, when installed in a car, etc. (1)

Claims (1)

[Claims] The exhaust pipe of the internal combustion engine is connected to a purifier filled with a filter, the injection nozzle connected to the cleaning water storage tank is placed in the exhaust gas path, and the drain pipe from the bottom of the purifier is connected to an adjustable drain valve. A liquid collector is interposed in the exhaust pipe of the purifier, and this liquid collector is also connected to the liquid filter, and the liquid filter is connected to the liquid filter through a pump. An exhaust gas purification device connected to the storage tank.