KR20150085245A - Apparatus for preventing reverse flow of corrosive gas to centrifugal dehydrator - Google Patents

Abstract

The present invention relates to a device for preventing backflow of corrosion gas in a centrifugal dehydrator, including a discharging pipe coupled to a discharging hole to discharge a supernatant liquid in a centrifugal dehydrator; a coupling hole which is formed to penetrate into the side of the discharging pipe; an opening and closing plate which is installed to be rotated in the discharging pipe and is allowed to open and close the discharging pipe when being rotated; a rotation axis inserted into the coupling hole whose one end part is coupled to the opening and closing plate and the other end part is protruded toward the outside of the discharging pipe; and a returning tool coupled to the other end part of the rotation axis to maintain the closed state of the opening and closing plate wherein the returning tool is coupled to the other end part of the rotation axis; a lever which is extended from the center line of the axis rotation to a right angle direction; and a ballast formed on the end part of the lever. The device for preventing backflow of corrosion gas in a centrifugal dehydrator has outstanding performance of preventing backflow of corrosion gas and is easily controlled and managed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a centrifugal dehydrator,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for preventing reverse flow of a corrosive gas in a centrifugal dehydrator, and more particularly, to an apparatus for preventing reverse flow of a corrosive gas in a centrifugal dehydrator.

A technique for preventing corrosion gas backflow of a centrifugal dehydrator is disclosed in Korean Patent Registration No. 10-1008516 (hereinafter referred to as "Prior Art", hereinafter referred to as "prior art") "Corrosive gas backflow prevention device for centrifugal dehydrator" Presented

The prior art

"The sludge is squeezed and dewatered by the rotation of the screw feeder equipped with the helical screw, and the desorbed liquid discharged from the centrifugal dehydrator, which is solid-phase separated by the dehydrated liquid discharged from the screen provided on the outside of the screw feeder, And is disposed on a desorbing liquid discharge line to be transferred to the natrium liquid storage tank,

A desorbing liquid inlet chamber for receiving the desorbing liquid discharged into the desorbing liquid discharge line, a desorbing liquid discharging chamber for discharging the desorbing liquid into the desorbing tank or the desorbing liquid storage tank into which the desorbing liquid is introduced from the desorbing liquid inflow chamber, A housing having a partition wall partitioned into a discharge chamber and formed with a discharge hole communicating the desorption liquid inlet chamber and the desorption liquid discharge chamber;

A discharge pipe connected to the discharge hole of the partition to discharge a desorbing liquid introduced into the desorbing liquid inflow chamber into the desorbing liquid discharge chamber;

And an outer edge portion of the outer edge portion is in contact with an end portion of the discharge tube path and is bent by the weight of the desorbing liquid flowing into the desorbing liquid inflow chamber, And discharging the desorbing liquid to the desorbing liquid discharge chamber and closing the discharge line by the elastic restoring force after discharging the desorbing liquid in the desorbing liquid inflow chamber to remove the corrosive gas generated from the decay of the organic matter contained in the desorbing liquid from the water collecting tank or the desorbing liquid storage tank And a corrosion gas backflow preventing plate for preventing the gas from flowing back to the desorbing liquid inflow chamber,

Thereby preventing the corrosive gas generated in the desorption liquid discharged from the centrifugal dehydrator from flowing back into the centrifugal dehydrator along the discharge duct.

In the prior art, a discharge pipe is provided in the housing, and a backflow preventing plate which is opened and closed by the self weight of the desorbing liquid is installed in the discharge pipe, so that the corrosive gas generated in the desorbing liquid can be prevented from flowing back into the centrifugal dehydrator along the discharge pipe However,

There is a problem that foreign substances are adhered to the discharge pipe and the check valve when the valve is used for a long period of time, thereby deteriorating the backflow prevention performance at the time of closing the discharge pipe.

In addition, there is no way for the user to check the operation state of the backflow prevention plate or to arbitrarily manipulate the backflow prevention plate, resulting in poor reliability and difficulty in management.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems,

And it is an object of the present invention to provide a corrosion gas backflow prevention device for a centrifugal dehydrator, which can secure an excellent backflow prevention performance even in long-term use and allow the user to easily check the open / close state of the pipeline or arbitrarily operate the pipeline.

According to a first aspect of the present invention, there is provided an apparatus for preventing reverse flow of corrosive gas in a centrifugal dehydrator,

A discharge pipe connected to the separation liquid discharge port of the centrifugal dehydrator;

A fastening hole formed at one side of the discharge pipe;

An opening / closing plate rotatably disposed inside the discharge pipe and opening / closing the discharge pipe by a rotation operation;

A rotation shaft inserted into the fastening hole and having one end coupled to the opening / closing plate and the other end protruding outside the discharge pipe; And

And return means coupled to the other end of the rotating shaft to maintain the closed state of the opening / closing plate,

The return means

A lever coupled to the other end of the rotary shaft and extending in a direction perpendicular to the centerline of the rotary shaft; And

And a weight formed on an end of the lever.

In the apparatus for preventing back flow of corrosive gas of the centrifugal dehydrator according to the second embodiment of the present invention,

A discharge pipe connected to the separation liquid discharge port of the centrifugal dehydrator;

An airbag having an internal space part and mounted inside the discharge pipe;

A gas injection port connecting the outside of the discharge pipe and the space portion of the airbag; And

And a gas injection unit connected to the gas injection port to inject gas into the space portion of the airbag.

In the apparatus for preventing reverse flow of corrosive gas of the centrifugal dehydrator according to the third embodiment of the present invention,

A discharge pipe connected to the separation liquid discharge port of the centrifugal dehydrator;

A sealing film in the form of a dome mounted on one side of the inner wall of the discharge pipe and protruding toward an inner center of the discharge pipe;

A through hole formed in the discharge tube to be connected to the inside of the sealing film; And

And a driving cylinder having a body installed outside the discharge tube and a rod connected to the center of the sealing film through the through hole.

According to the present invention, there is provided an apparatus for preventing reverse flow of corrosive gas in a centrifugal dehydrator,

The backflow prevention performance against the corrosive gas is improved, and the operation and management are facilitated.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing a use state of a corrosion gas backflow prevention device for a centrifugal dehydrator according to a first embodiment of the present invention; FIG.
2 is a three-dimensional view of an apparatus for preventing reverse flow of corrosive gas of a centrifugal dehydrator according to the first embodiment of the present invention.
3 is a three-dimensional view of a corrosion gas backflow prevention device for a centrifugal dehydrator according to a second embodiment of the present invention;
4 is a cross-sectional view of a corrosion gas backflow preventing device for a centrifugal dehydrator according to a second embodiment of the present invention;
5 is a cross-sectional view of an apparatus for preventing reverse flow of corrosive gas of a centrifugal dehydrator according to a third embodiment of the present invention;
6 is a cross-sectional view of a corrosion gas backflow preventing device for a centrifugal dehydrator according to a fourth embodiment of the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1 and FIG. 2, an apparatus for preventing back flow of corrosive gas of a centrifugal dehydrator according to a first embodiment of the present invention (hereinafter referred to as a backflow prevention device) includes a discharge pipe 100, A plate 200, a rotating shaft 300, and a returning means 400.

The discharge pipe (100) is connected to the separation liquid discharge port (11) of the centrifugal dehydrator (10).

The centrifugal dehydrator 10 includes a cylindrical body 12, a screw conveyor 13 installed inside the body 12, a casing 12 having the solid electrolyte outlet 14 at the other side thereof, A general centrifugal dehydrator including a dehydrator 15 is applied.

The discharge pipe 100 is connected to the separation liquid discharge port 11 by various methods such as bolt fastening and clamp fastening, and the separated liquid discharged from the centrifugal dehydrator 10 is transferred to the separate water storage tank 20.

As shown in the drawing, a coupling hole 110 is formed at one side of the discharge pipe 100 so that the rotary shaft 300 can be inserted.

The opening and closing plate 200 is disposed inside the discharge pipe 100 to open and close the discharge pipe 100.

The opening and closing plate 200 is in the form of a plate having a shape and size corresponding to the inner circumferential surface of the discharge tube 100. The rotary shaft 300 is coupled to one end of the opening and closing plate 200, The support shaft 210 inserted into the inner wall is formed and is rotatably mounted inside the discharge pipe 100 so as to open and close the discharge pipe 100 by the rotation operation.

The rotary shaft 300 is inserted into the fastening hole 110 of the discharge tube 100 to rotatably support the opening / closing plate 200.

As shown in the figure, the rotary shaft 300 has one end coupled to the opening / closing plate 200 and the other end projecting to the outside of the discharge pipe 100.

The return means 400 is coupled to the other end of the rotary shaft 300 to maintain the closed state of the opening / closing plate 200,

A lever 410 coupled to the other end of the rotary shaft 300 and extending in a direction perpendicular to the centerline of the rotary shaft 300; And

And a weight 420 formed at the end of the lever 410.

Here, it is preferable that the lever 410 is vertically disposed on the lower side of the rotary shaft 300 in a state where the opening and closing plate 200 is closed,

In this case, when the separated liquid is discharged, the opening / closing plate 200 is rotated by the self weight of the separated liquid to open the discharge tube 100. When the discharge of the separated liquid is completed, The lever 410 which has been rotated is vertically arranged again by the weight 420, so that the opening / closing plate 200 is returned to close the discharge tube 100. [

As a result, according to the backflow prevention device of the present invention constructed as described above,

The user can easily confirm the operating state of the opening and closing plate 200 by observing the operation of the lever 410 and also can easily operate the opening and closing plate 200 by rotating the lever 410. [

Further, even if the opening / closing plate 200 is not smoothly operated due to the foreign substances fixed between the discharge pipe 100 and the opening / closing plate 200, the lever 410 is rotated several times to easily remove foreign substances can do.

Hereinafter, a second embodiment of the present invention will be described in detail with reference to FIG. 3 and FIG.

3 and 4, the backflow prevention device according to the second embodiment of the present invention is substantially similar to the backflow prevention device according to the first embodiment, and includes the discharge pipe 100, the opening / closing plate 200, A rotating shaft 300, and a returning means 400.

However, according to the second embodiment, the rotation center of the opening / closing plate 200 is positioned at one side edge of the opening / closing plate 200 so that the opening / closing plate 200 can rotate more smoothly due to its own weight.

Hereinafter,

The discharge pipe 100 is connected to the discharge port 11 (see FIG. 1) of the centrifugal dehydrator 10 (see FIG. 1) as well as the discharge pipe 100 of the first embodiment described above, and the centrifugal dehydrator 10 (See FIG. 1 ') to separate water tank 20 (see FIG. 1').

As shown in the figure, an annular support 140 is mounted inside the discharge tube 100.

The support 140 is installed such that its outer circumferential surface is in contact with the inner circumferential surface of the discharge tube 100, and a coupling portion 141 protruding downward is provided at one side of the lower surface.

The opening and closing plate 200 has a corresponding engaging portion 220 disposed at one end thereof in parallel with the engaging portion 141 of the support 140 and is rotatably coupled to the lower side of the support 140, Thereby opening and closing the discharge pipe 100.

The opening and closing plate 200 is formed to have a diameter slightly larger than an inner diameter of the support 140 so as to close the inside of the support 140.

One end of the rotary shaft 300 is inserted through the coupling portion 141 of the support 140 and the corresponding coupling portion 220 of the opening and closing plate 200 and the other end passes through the discharge pipe 100, As shown in FIG.

One end of the rotary shaft 300 is rotatably inserted into the coupling part 141 of the support 140 and is fixed to the corresponding coupling part 220 of the opening and closing plate 200 in a non-rotatable manner.

As a result, the rotating shaft 300 rotatably supports the corresponding engaging portion 220 of the opening / closing plate 200, so that the opening / closing plate 200 rotates about one side edge as shown in FIG. 4 The separation liquid can be rotated more smoothly by its own weight.

The returning means 400 has the same structure as that of the returning means 400 of the first embodiment as shown in the drawings, and a repeated description thereof will be omitted.

Below. The third embodiment of the present invention will be described in detail with reference to FIG.

5, the backflow prevention device according to the third embodiment of the present invention mainly includes an exhaust pipe 100, an air bag 500, a gas inlet 600, and a gas injection unit 700.

The discharge pipe 100 is connected to the discharge port 11 (see FIG. 1) of the centrifugal dehydrator 10 (see FIG. 1 ') similarly to the discharge pipe 100 of the first and second embodiments described above, And the separated liquid discharged from the dehydrator 10 is transferred to a separate water storage tank 20 (see FIG. 1 ').

The airbag 500 has an inner space portion 510 and is mounted inside the discharge tube 100.

The airbag 500 is made of a stretchable material such as rubber so that the volume can expand or contract by the gas injected into the space portion 510.

As shown, the airbag 500 may have a structure that is mounted on the inner wall of the discharge tube 100, and may be formed in the form of a balloon or an annular tube, if necessary.

The gas inlet 600 is formed in the discharge pipe 100 and connects the outside of the discharge pipe 100 to the space 510 of the airbag 500.

The gas injection port 600 may be formed by simply piercing the discharge pipe 100. It is preferable that the gas injection port 600 is formed by attaching a pipe fitting such as a nipple to the discharge pipe 100 as shown in FIG.

The gas injection unit 700 is connected to the gas injection port 600,

A pressure vessel 710 in which compressed air or high pressure gas is stored;

An air supply valve 720 connected to the pressure vessel 710;

An air supply pipe 730 connecting the air supply valve 720 and the gas inlet 600;

An exhaust pipe 740 branched from the air supply pipe 730; And

And a pressure gauge 750 and an exhaust valve 760 provided in the exhaust pipe 740.

Here, the supply valve 730 and the exhaust valve 760 are connected to a controller (not shown) provided in the centrifugal dehydrator 10 so that the opening and closing operation is controlled.

The gas injection unit 700 inflates the airbag 500 by injecting gas into the space portion 510 of the airbag 500 by opening the air supply valve 720 with the exhaust valve 760 closed So that the inflated air bag 500 is brought into close contact with the inner wall of the discharge pipe 100 to close the discharge pipe 100. At this time, the user can easily check the operating state of the airbag 500 by observing the pressure gauge 750. [

When the discharge pipe 100 is required to be opened, the air supply valve 720 is closed, and the air discharge valve 760 is opened, so that the air bag 500 can be easily contracted.

Below. A fourth embodiment of the present invention will be described in detail with reference to FIG.

As shown in FIG. 6, the backflow prevention device according to the fourth embodiment of the present invention mainly comprises a discharge tube 100, a sealing film 800, and a driving cylinder 900.

The discharge pipe 100 is connected to the discharge port 11 (see FIG. 1) of the centrifugal dehydrator 10 (see FIG. 1 ') as well as the discharge pipe 100 of the first to third embodiments described above, And the separated liquid discharged from the dehydrator 10 is transferred to a separate water storage tank 20 (see FIG. 1 ').

As shown in the drawing, a through hole 120 through which a rod 920 of a driving cylinder 900 to be described later is inserted is formed at one side of the discharge pipe 100.

The sealing film 800 is mounted on one side of the inner wall of the discharge tube 100 and is formed in the form of a dome protruding toward the inner center of the discharge tube 100.

The sealing film 800 is made of a natural rubber, a synthetic rubber, a metal plate or the like having excellent elasticity so that it can be easily deformed by an external force.

The sealing film 800 is closely attached to the inner wall of the discharge pipe 100 so that the inside and outside of the sealing film 800 can be cut off from each other.

The sealing film 800 is disposed at the center of the sealing film 800 so that the through-hole 120 of the discharge tube 100 is located, and the through hole 120 is connected to the inside of the sealing film 800.

The driving cylinder 900 is composed of a conventional pneumatic cylinder composed of a body 910 and a rod 920 which is mounted on the body 910 to be moved back and forth. A controller (not shown) provided in the centrifugal dehydrator 10, And the forward and backward movement of the rod 920 is controlled.

The body 910 is installed outside the discharge pipe 100 and the rod 920 is connected to the center of the sealing film 800 through the through hole 120 of the discharge pipe 100.

As a result, the sealing film 800 opens the discharge tube 100 as the driving cylinder 900 is depressed toward the driving cylinder 900 during the backward movement of the driving cylinder 900. When the driving cylinder 900 is advanced during the advancing operation of the driving cylinder 900, So that the discharge tube 100 is closed.

In other words, the sealing film 800 contacts the other side of the inner wall of the discharge tube 100 in a state in which the driving cylinder 900 is advanced to close the discharge tube 100. When the driving cylinder 900 is retracted, So that the discharge pipe 100 is opened.

According to this structure, when the sealing film 800 closes the discharge tube 100, the other side of the inner wall of the discharge tube 100 is strongly pressed by the pressure of the driving cylinder 900, It is possible to secure an excellent backflow prevention performance even if foreign matter is adhered to the inner wall of the discharge pipe 100.

In addition, the user can easily confirm the operating state of the sealing film 800 by observing the operation of the driving cylinder 900, and can easily perform opening and closing operations of the discharge tube 100 by manually operating the driving cylinder 900 .

The protruding portion 130 protrudes toward the center of the sealing film 800 is formed on the other side of the inner wall of the discharge tube 100.

The protrusion 130 is in contact with the sealing film 800 during the forward movement of the driving cylinder 900 so that the discharge tube 100 can be more easily closed.

While the present invention has been described with reference to the accompanying drawings, it is to be understood that the present invention has been described in connection with what is presently considered to be the most practical embodiment of the invention, And variations are to be construed as falling within the scope of protection of the present invention.

100; discharge pipe
110; Fastening holes 120; Through-hole
130; A ridge 140; support
200; Opening and closing plate
210; A support shaft 220; The corresponding coupling portion
300; Rotating shaft
400; Return means
410; Lever 420; Weights
500; Airbag
510; Space portion
600; Air inlet
700; Air injection unit
710; Pressure vessel 720; Supply valve
730; A gas engine 740; vent pipe
750; Pressure gauge 760; Exhaust valve
800; Sealing film
900; Driving cylinder
910; Body 920; road

Claims (7)

A discharge pipe (100) connected to the separation liquid discharge port (11) of the centrifugal dehydrator (10);
A fastening hole 110 formed at one side of the discharge pipe 100;
An opening / closing plate (200) rotatably disposed in the discharge pipe (100) and opening / closing the discharge pipe (100) by a rotating operation;
A rotation shaft 300 inserted into the fastening hole 110, one end of which is coupled to the opening / closing plate 200 and the other end of which is protruded to the outside of the discharge pipe 100; And
And return means (400) coupled to the other end of the rotary shaft (300) to maintain the closed state of the open / close board (200)
The return means (400)
A lever 410 coupled to the other end of the rotary shaft 300 and extending in a direction perpendicular to the centerline of the rotary shaft 300; And
And a weight (420) formed at an end of the lever (410) to prevent reverse flow of the corrosive gas from the centrifugal dehydrator.
A discharge pipe (100) connected to the separation liquid discharge port (11) of the centrifugal dehydrator (10);
An annular support 140 installed inside the discharge pipe 100 and having a coupling portion 141 protruding downward at one side of the lower surface;
The support 140 is rotatably coupled to the lower side of the support 140. The support 140 is opened and closed by the rotation of the support 140, An opening / closing plate (200);
(300) having one end inserted through the coupling portion (141) and the corresponding coupling portion (220) and the other end passing through the discharge pipe (100) and exposed to the outside of the discharge pipe (100); And
And return means (400) coupled to the other end of the rotary shaft (300) to maintain the closed state of the open / close board (200)
The return means (400)
A lever 410 coupled to the other end of the rotary shaft 300 and extending in a direction perpendicular to the centerline of the rotary shaft 300; And
And a weight (420) formed at an end of the lever (410) to prevent reverse flow of the corrosive gas from the centrifugal dehydrator.
3. The method according to claim 1 or 2,
Wherein the lever (410) is disposed vertically below the rotary shaft (300) in a state where the opening and closing plate (200) is closed.
A discharge pipe (100) connected to the separation liquid discharge port (11) of the centrifugal dehydrator (10);
An airbag (500) having an internal space part (510) and mounted inside the discharge pipe (100);
A gas inlet 600 connecting the outside of the discharge pipe 100 and the space 510 of the airbag 500; And
And a gas injection unit 700 connected to the gas injection port 600 to inject gas into the space 510 of the airbag 500,
Wherein the airbag (500) is expanded by the gas injected into the space (510), thereby closing the discharge pipe.
5. The method of claim 4,
The gas injection unit (700)
A pressure vessel 710 in which compressed air or high pressure gas is stored;
An air supply valve 720 connected to the pressure vessel 710;
An air supply pipe 730 connecting the air supply valve 720 and the gas inlet 600;
An exhaust pipe 740 branched from the air supply pipe 730; And
And a pressure gauge (750) and an exhaust valve (760) installed in the exhaust pipe (740).
A discharge pipe (100) connected to the separation liquid discharge port (11) of the centrifugal dehydrator (10);
A sealing membrane 800 in the form of a dome mounted on one side of the inner wall of the discharge pipe 100 and protruding toward an inner center of the discharge pipe 100;
A through hole 120 formed in the discharge pipe 100 to be connected to the inside of the sealing film 800; And
And a driving cylinder 900 in which a body 910 is installed outside the discharge pipe 100 and a rod 920 is connected to the center of the sealing film 800 through the through hole 120,
The sealing film 800 opens the discharge tube 100 as the driving cylinder 900 is depressed toward the driving cylinder 900 during the backward movement of the driving cylinder 900, 900), the discharge pipe (100) is closed.
The method according to claim 6,
Wherein a ridge (130) protruding toward the center of the sealing film (800) is formed on the other side of the inner wall of the discharge pipe (100).

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