JPH0642721Y2 - Drain processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a drain treatment device for treating drain that leaks from, for example, a seal unit of an agitator or a mechanical seal portion of a pump.

(Prior Art) Conventionally, when a harmful sealing fluid or a high-temperature, high-pressure fluid is used in, for example, a stirrer, a pump, etc., a rotary shaft is inserted to seal the fluid in the rotary shaft insertion portion of the container for processing this fluid. There was a seal such as a mechanical seal.

The mechanical seal inserts the seal fluid by rotating the seal ring provided on the rotating shaft elastically pressed by a spring etc. and sliding it on the floating seat fixed to the housing with the rotating shaft inserted. It is to be sealed in part.

Although this mechanical seal has better sealing performance than other seals such as oil seals, it is difficult to completely prevent the leakage of sealing fluid from the seal end. It was discharged to the environment in a liquid state from the drain hole provided at the end.

(Problems to be solved by the invention) However, in the case of the above-mentioned conventional technology, the drain often contains a substance harmful to the environment, and if such a drain is discharged to the environment in a liquid state, it has an adverse effect on the environment. There was a problem of giving.

For example, when refining crude oil with a stirrer or stirring in the course of pulp production, the drainage discharged contains oil, and if it is discharged in the liquid state to the environment, it pollutes the environment.

In addition, such a drain often contains a harmful substance such as an acid, and there is a problem that the structure around the drain discharge portion is corroded when the drain is left in a liquid state for a long time.

The present invention has been made to solve the above-mentioned problems of the prior art, and an object thereof is to provide a drain treatment device capable of preventing environmental pollution and structure corrosion due to drain leaking from a seal portion. To do.

(Means for Solving the Problem) In order to achieve the above object, in the present invention, a seal provided on a rotary shaft for sealing a seal fluid in a rotary shaft insertion portion of a container into which the rotary shaft is inserted. Connect a separator equipped with a heater to the drain hole for discharging the drain leaked from the end of the drain, and send the drain to this separator and heat the separator by the heater to separate the drain into gas and solid. Is characterized by.

(Operation) In the device of the present invention having the above configuration, the drain discharged from the drain hole is fed into the separator, and the heater in the separator heats the drain to heat it into gas and solid. To be separated.

Then, when the separated gas is harmless, it is released to the environment as it is, and when the gas contains a harmful substance, it is released to the environment after being subjected to a further separation treatment to make it harmless.

Further, the solid separated and stored in the separator can be easily taken out by cleaning the inside of the separator, and the taken out solid is disposed of in a harmless state to the environment.

(Example) Below, this invention is demonstrated based on the Example shown in figure. FIG. 1 is a vertical cross-sectional view showing the construction of a drain processing apparatus according to an embodiment of the present invention, and FIG. 2 is a partially cutaway front view showing the construction of a seal unit part to which the apparatus is attached in detail. In FIG. 2, reference numeral 1 denotes a seal unit portion of the stirrer, and a mechanical seal 3 is provided above the insertion portion where the rotary shaft 2 is inserted into the stirring container (the broken line portion in the drawing).

The mechanical seal 3 is a compound seal, and includes a floating ring 5 fixed to the housing 4 side into which the rotary shaft 2 is inserted, and a driven ring 6 provided on the rotary shaft 2 side.
The seals 3a, 3b formed by pressing are arranged to face each other.

The seal 3a is arranged on the upper end side of the rotary shaft 2, the floating sheet 5a is fixed to the housing 4 via the O-ring 7a, and the driven ring 6a is attached to the collar 10 via the packing 8a and the compression ring 9a. Has been. The collar 10 is fixed to the rotary shaft 2 with a set screw 10a. Then, the floating sheet 5a and the driven ring 6a are installed in contact with each other on the sliding surface 20a, and the floating sheet 5a is in a stationary state even when the rotating shaft 2 rotates,
The driven ring 6a rotates with the rotary shaft 2 and slides on the sliding surface 20a with respect to the floating sheet 5a.

Similarly for the seal 3b, the floating sheet
5b is a flange at the lower end of the housing via the O-ring 7b
The driven ring 6b is fixed to the collar 4a, and the driven ring 6b is attached to the collar 10 via the packing 8b and the compression ring 9b.However, in the seal 3b, the spring 11 is interposed between the compression ring 9b and the collar 10, and the driven ring is 6b is a spring
Floating seat 5 with sliding surface 20b urged by 11
Pressed on b.

Then, the housing flange portion 4a of the rotating shaft 2 is attached to the stirring container (indicated by a chain line in the figure), so that the rotating shaft 2 is inserted into the stirring container, and the sealing fluid is mechanically sealed by the mechanical seal 3 at the inserting portion of the rotating shaft 2. Sealed by.

Further, a drain hole 12 for discharging the drain leaking from the upper end of the mechanical seal 3 is provided at the end of the mechanical seal 3 on the floating sheet 5a side, and a drain processing device 30 is provided in the drain hole 12. ing.

As shown in FIG. 1, the drain processing device 30 is composed of a separator 13 connected to the drain hole 12 by a connecting pipe 14. Inside the separator 13, a linear through hole 15, 1 of an appropriate size that can be easily cleaned with a brush or the like.
6 is formed, and the upper end of the through hole 15 formed in the vertical direction has an opening 15 for sending the gas in the separator 13 to the outside.
a is formed, and the lower end portion has an opening 15b for taking out the solids stored in the separator 13 to the outside. Through hole 15
The connecting pipe 14 is connected to one opening 16a of the through hole 16 formed in the direction perpendicular to the above, and the other opening 16b is closed by a plug 17.

A heater 18 such as an electric heater or a steam heater is provided on the outer circumference of the separator 13. Reference numeral 19 in the figure covers the periphery of the connecting pipe 14, and also the opening 16a and the drain hole 12 of the separator 13.
Is a connecting member for connecting.

In the seal unit portion 1 configured as described above, when the stirrer operates, that is, when the rotating shaft 2 rotates,
The driven rings 6a and 6b rotate with the rotation of the rotating shaft 2 and slide with the floating sheets 5a and 5b, respectively, whereby the sealing fluid is sealed on the sliding surfaces 20a and 20b. However, since it is difficult to completely seal the sealing fluid, as shown in FIG.
The seal fluid often leaks as a drain d from the upper end side of the drain, and the drain d is sent from the drain hole 12 into the separator 13 through the connecting pipe 14.

Then, the inside of the separator 13 is heated by the heater 18, and the drain sent into the separator 13 is separated into a gas and a substantially solid substance. The separated gas is discharged from the discharge pipe 2 through the opening 15a.
If the gas is harmless, it is released to the environment as it is, and if the gas contains substances harmful to the environment, it is harmless because it is separated by an oil-water separator. After being released, it is released into the environment.

On the other hand, after the stored material separated in the separator 13 and made into a substantially solid state is completely solidified, by cleaning the through holes 15 and 16 with the brush 22 as shown in FIG. The separated solid can be taken out. This solid is disposed of in a harmless environment.

As described above, using the drain processing device of the present invention,
The drain that leaks from the mechanical seal can be disposed of in a harmless manner to the environment by a simple treatment work, and the drain that leaks from the upper end of the mechanical seal is quickly separated into gas and solid, so the drain is a liquid. It is not left for a long time as it is, and the corrosion of the structure around the drain discharge part can be prevented.

In the above embodiment, the case where the drain processing device is attached to the seal unit portion of the stirrer is taken as an example.
The present invention is not limited to this, and for example, the drain treatment device may be attached to a mechanical seal portion such as a pump.

(Effect of the Invention) The present invention has the above-described configuration and operation. By installing the drain treatment device of the present invention on the seal portion of the rotary shaft, the drain leaking from the seal portion is harmless to the environment by a simple treatment work. It is possible to prevent environmental pollution by disposing in a simple state.

In addition, by rapidly separating the liquid drain into gas and solid, it is possible to prevent corrosion of the structure around the drain discharge part.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing the construction of a drain processing apparatus according to an embodiment of the present invention, FIG. 2 is a partially cutaway front view showing in detail the construction of a seal unit portion to which the apparatus is attached, and FIG. It is explanatory drawing which shows the state at the time of cleaning the inside of a separator in the Example. Explanation of symbols 2 ... Rotary shaft, 3 ... Mechanical seal 4 ... Housing 5a, 5b ... Floating seat 6a, 6b ... Following ring 7a, 7b ... O ring 8a, 8b ... Packing 9a, 9b ... Compression ring 10 ... Color, 11 ... Spring 12 ... Drain hole, 13 ... Separator 14 ... Connection pipe, 18 ... Heater 30 ... Drain treatment device d ... Drain

Claims (1)

[Scope of utility model registration request] 1. A heater is provided in a drain hole for discharging a drain leaking from an end portion of a seal provided in a rotary shaft for sealing a sealing fluid in a rotary shaft insertion portion of a container into which the rotary shaft is inserted. A drain treatment device characterized in that a separator is connected, the drain is sent to the separator, and the separator is heated by a heater to separate the drain into a gas and a solid.