JPS61263661A - Centrifugal oil and water separator - Google Patents

Abstract

PURPOSE:To continuously and rapidly separate bilge water, etc., by providing a double hollow shaft at the lower part of a separation chamber, introducing the bilge water into the separator chamber through the inner hollow shaft and drawing off water from the outer hollow shaft. CONSTITUTION:In an oil and water separator for treating bilge water, etc., in marine vessels, a power-transmitting shaft 2, which is partly hollowed and used for extracting oil, is provided at the center of the upper lid of a separation chamber 1, a double hollow shaft is furnished at the center of the lower part, bilge water, etc., is introduced into the separation chamber 1 from the inner hollow shaft 3 and the water is extracted from the bottom of the separation chamber 1 through a duct 5 and the outer hollow shaft 4. Consequently, bilge water, etc., mixed with oil can be separated continuously and rapidly by utilizing centrifugal force.

Description

Detailed Description of the Invention The present invention utilizes centrifugal force to continuously and continuously remove oil and seawater (hereinafter referred to as water) when treating bilges, etc. mixed with oil (hereinafter referred to as oil) on ships. This invention relates to an oil-water separator that can quickly separate oil and water.

Conventional oil/water separators can be roughly divided into separator plate types and coalescer set types.

It expands the passage area of bi/l/di in waste water.

This method reduces the speed at which the oil passes through the water, making it easier for the oil to float out of the water and collect it at the top.

The latter set of coalescers is called a coalescer. A fil filter made mainly of Glasslar μ is installed, and the bilge passes through the narrow passage of this coalescer while passing through the vessel, so water passes through as it is, but oil passes through the glass. There is a type in which the turf 1/C is blocked and gathers at the top, and there is also a two-way wet type.

However, all of these oils have many defects and contain a large amount of water, so they cannot be burned as is in a waste oil incinerator, and once the oil is transferred to a waste oil sedimentation tank, it is heated up to 100 degrees Celsius. This is because we use a method that involves heat treatment, then letting it sit and forge for one hour, then drawing out the water and incinerating the oil at the top.

It takes a lot of time and effort, and even if you do the work all the time during a voyage, the reality is that the amount of bilge that comes out one after another can accumulate beyond your ability to handle it.

In addition, the one-separator type separator has a large volume compared to the water capacity, and recently coalescer set separators have become more popular, but this type of separator is also popular.

Since the distance between the ri of the coalescer is very narrow, it is easy to break down and break through.

If the coalescer is operated with a damaged coalescer, there is a risk of oil spilling out onto the sea, so it is necessary to periodically open and inspect it.Furthermore, in order to prevent such accidents, it is necessary to always use the expensive coalescer. They have many disadvantages, such as the need to replace them, which can be considered fatal.

No matter how much improvements may be made in the future with conventional oil/water control devices, it is impossible to fully compensate for one weak point with these systems.

B This machine invention is designed as a machine that can eliminate these defects, and its main structure will be explained below with reference to the drawings.

The separation chamber (1) is a rotating cylindrical one.

It is divided into several section chambers radially from the center of rotation.

Bi A/ who entered the room! The upper lid of the separation chamber has a power transmission shaft (2) that transmits rotational force to the upper part of the separation chamber, and is partially hollow to extract the oil separated in the separation chamber. There is.

There is also a double hollow shaft at the bottom of the 9 separation chamber.

The hollow 111(3) in the middle is a shaft that leads the bilge to the separation chamber.

The outer hollow shaft (4) leads from the bottom of the separation chamber compartment to a conduit (5) for withdrawing the water treated in the separation chamber.

When a centrifugal force is applied to the bilge that has entered the separation chamber, water collects toward the outer periphery, and oil accumulates toward the center, forming an interface between water and oil (
6) is doubled in a cylindrical shape, and in order to detect this boundary line, several Wl electrode rods 7) are placed on the upper lid of the separation chamber at appropriate intervals from the rotation center to the outer periphery. It is inserted into.

Measure the insulation resistance of the oil and water inside the WL electrode rod and send it as a signal to the electrical control panel.

In conventional oil-water separators, oil that has been reduced to 1/4 contains a large amount of water and cannot be incinerated even if the firepower in the furnace is supplemented with an auxiliary burner. The insulation resistance is extremely poor when measured (measured with both ends of the Megger lead wire separated by 10 to 4 mm), but heat-treated Mkl
c After removing water, the insulation resistance of oil increases to infinity.

A test has shown that even if the auxiliary burner is cut, waste oil will burn well if the insulation resistance of the oil is increased to 1M ohm, even if it does not reach infinity. Incineration of waste oil begins when the insulation resistance rises to 1M ohm or more.

The electrode rod of this machine is an application of this fact.

In order to measure insulation resistance, a series of electrical systems run from each electrode rod through a slip ring (8) that rotates with the rotating body, to a fixed carbon pouf V (9), and then to an electrical control panel (1o). It is necessary to provide sufficient insulation.

There are also water and oil outlet control valves (11) and (12), respectively, and the control panel controls the interface between water and oil in the 9 minute room to maintain a certain area by the signal from the 11cFM rod. The system determines whether the water and oil are suitable and gives instructions to open and close the water and oil outlet control valves.

Upper and lower lll1! This has a bearing at the position shown in the drawing to support one rotating body, and a joint for transmitting +al fA4 motion is attached to the upper end of the upper shaft.

Furthermore, this shaft is partially hollow, and the hollow part has a side hole for letting oil out.

On the outer periphery of the shaft through which this side hole communicates, there is an oil collecting ring with two shaft sealing devices, upper and lower.This slips regardless of the rotation of the shaft, so it is fixed, and from here a pipe is connected to the oil outlet control valve. It is connected to.

In addition, there are also a bilge supply ring and a water collection ring with similar functions at the lower ends of the lower dual hollow shafts, which function as a bilge inlet solenoid valve and a water outlet control valve, respectively.

Next, let's talk about the utility and effects of this device.

1. Also explained in conjunction with the drawings.

First, the bilge from which garbage has been removed by the strainer enters the separation injection lobe by the bilge pump as shown by the arrow.
However, up to this point it is the same as the conventional one and is omitted in drawing C.

Enter into the separator and enter via A/σI+ Bilge inlet solenoid valve (14), iJμ supply ring (15)
I Middle hollow shaft (3) 9 Separation chamber bottom plate (22) and bilge guide bottom 1! (23), the bilge passes sequentially between the holes, passes through several bilge dispersion holes (2o) drilled in the iE plate, and reaches the separation chamber, where the bilge is separated by centrifugal force.
Water is collected on the outside and oil on the inside, creating an interface (6).

There are four electrode rods (7) as shown in one drawing, and the mounting positions are marked A, B; O, D.

When there is an interface between B and 0 of this electrode rod, the water and oil outlet control valve (11), (νIJ) is open and water flows through the inner and outer hollow shafts through the conduit (5). The water collection ring (
16).

The oil is discharged through the water outlet control valve (11), while the oil passes through the hollow part of the power transmission shaft and is collected via the oil collecting ring (17) and the oil outlet control valve (12).

When the boundary surface moves to B, (11) J! -Closed, (12) remains open, and if the boundary surface changes to C, (11) remains open and (12) closes, then the boundary surface is always Mu@B can be maintained in between.

In the unlikely event that the boundary line reaches A or DIc, the bilge pump will stop and the solenoid valve (14)j! Since the alarm sounds when the door is closed, the bilge can be separated continuously without oil or water mixing with water.

The results of building and testing a simple prototype.

The water and oil were easily separated, the oil insulation resistance was sufficient, and an ideal resistance was obtained.

If this method is adopted, waste oil disposal will become easier in the future.
This has the effect of lowering M carrying costs.

[Brief explanation of the drawing]

Figure 1 is an overall system diagram of this device, and a is a cross-sectional view of the rotating parts such as the 9 separation chambers and their surroundings as seen from the front. (1) Separation chamber (2) Power transmission shaft (3) Middle hollow shaft (
4) Outer hollow shaft (+1) Conduit (6) Water-oil interface (7) Electrode rod (A/B/O/D) (8) Slip ring (5 threads, one of which is for grounding) ( 9) Carbon brushes (same number as 8) (10) Electric control panel (11)
Water outlet control valve (12) Oil outlet control valve (13) Upper and lower bearings (14) Bilge inlet solenoid valve (L5) Bilge supply ring (
t6γ Water collection ring (17) Oil collection ring (19) Water outlet hole (4
Location゛) (20) Bilge distribution hole (12 locations) (2m
) Separation chamber top cover (+2) Separation chamber bottom plate (23) Bottom cover opening for bilge guide Figure 2 is a plan view from above with the top cover of the 9th separation chamber removed.

Claims (1)

[Claims] The separation chamber (1) has a vertical cylindrical shape, and a partially hollow power transmission shaft (2) for oil extraction is attached to the center of the upper lid.
A double hollow shaft is installed in the center of the lower part, the middle hollow shaft (3) leads the bilge into the separation chamber, and the outer hollow shaft (4) leads the water from the bottom of the separation chamber to the conduit (5). A centrifugal oil/water separator with a structure that allows the oil to be extracted by