KR950003081Y1 - Filtering device have reverse washing function - Google Patents

Abstract

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Description

Filtration device with the function to remove foreign substances stuck in the filter network by using the backflow

1 is a cross-sectional view showing the configuration of a conventional filtration apparatus.

2 is a plan view of a blocking plate of a conventional filtration device.

3 is a front view of the foreign substance discharge pipe of the conventional filtration apparatus.

4 is a cross-sectional view showing the configuration of the filtration device in the present invention.

5 is a front view of the foreign substance discharge pipe of the filtration device of the present invention.

6 is a plan view of a blocking plate of the filtration device of the present invention.

7 is a view showing the configuration of the adapter and the closing plate of the filter device of the present invention.

8A shows the shape of the filter plate used in the filter of the conventional filtration apparatus.

Figure 8b shows the shape of the filter plate used in the filter of the filter device of the present invention.

* Explanation of symbols for main parts of the drawings

1,31: housing 2,32: blocking plate

3,33: through hole 4,34: fluid passage

5,35 Filter 6,36 Exhaust pipe

7,37: motor and reduction gear assembly 8,38: inlet pipe

9,39: Outflow pipe 10,40: Adapter

11,41: closed plate 12,42: support plate

13,43: long bolt 14: rotating shaft

15 Flange 16 Outline Spline

17,47: contact plate 18: spline resistant

19: bushing 20: compression spring

21: bushing 22,52: final discharge pipe

23,53: on-off valve 24: connection pipe

[Technical Field]

The present invention relates to a filtration device for filtering foreign matter such as debris contained in a fluid such as chemicals, and has a function to temporarily remove the debris, etc. accumulated on the inner surface of the filtering network due to long-term use by temporarily refluxing the fluid It relates to a filtration device.

[Design background]

At present, it is well known that various kinds of filtration devices are used to filter various kinds of foreign substances such as debris contained in the fluid in various places of society such as petrochemical plant, chemical plant and water treatment plant.

The filtering device used in the above places should not stop the flow of the fluid for cleaning the filtering net, and should have a function to clean the filtering net while continuously flowing the fluid. An example of a filtration apparatus is shown in FIG. 1 of cleaning the filter network while continuously flowing and filtering the fluid.

The conventional filtration apparatus shown in FIG. 1 is a cylindrical housing (1) divided into a lower space and an upper space, and distinguishes a lower space and an upper space of the housing, and has a through hole through which a rotating shaft penetrates in the center ( 3) a blocking plate 2 (second) through which a plurality of fluid passages 4 are formed at predetermined intervals for the passage of fluid on a predetermined size of circumference centered on the through hole 3; See also). Four filters 5 (only two are shown in FIG. 1) installed in the upper space of the housing, the foreign matter discharge pipe 6 installed in the lower space of the housing, and the foreign substance discharge pipe 6 Motor and reduction gear assembly (7) installed on the upper surface of the housing to rotate by 90 °, an inlet pipe (8) connected to the lower space of the housing and an outlet pipe (9) connected to the upper space, etc. It is.

The lower part of the filter 5 is connected to the fluid passage 4 formed in the blocking plate 2 by the adapter 10, and the upper part of the filter 5 is closed by the closing plate 11. The filter 5 has a support plate 12 placed thereon as shown in FIG. 1 and connects the support plate 12 between the support plate 12 and the blocking plate 2 with a long bolt 13 to tighten the nut to block the blocking plate 2. Is installed on. As shown in FIG. 3, the foreign substance discharge pipe 6 is integrally formed with the rotary shaft 14, and the flange 15 is welded to the upper end of the rotary shaft 14, and an external shape spline 16 is formed at the front end thereof. have.

The inlet side of the foreign substance discharge pipe 6 is welded to the contact plate 17 in close contact with the lower surface of the blocking plate (2).

The reduction gear output shaft of the motor and reduction gear assembly 7 is connected with a connecting plate 24 for transmitting the rotational force to the rotation shaft 14 of the foreign substance discharge pipe 6. Inside the lower end of the connecting plate 24 is formed an internal spline 18 to which the external spline 16 of the rotary shaft 14 can be fitted.

A bushing 19 is provided between the through hole 3 of the blocking plate 2 and the rotary shaft 14 of the foreign substance discharge pipe 6 for airtightness of the fluid.

A compression spring 20 is inserted between the flange 15 and the bushing 19 of the rotary shaft 14 to apply a force upwardly to the foreign substance discharge pipe 6 and the rotary shaft 14 to close the foreign substance discharge pipe 6. (17) is in close contact with the lower surface of the blocking plate (2).

The bottom wall of the housing 1 has a bushing 21 fitted therein. The bushing 21 has an upper groove to which the foreign substance discharge pipe 6 is rotatably connected and a lower groove to which the final discharge pipe 22 is not rotatably connected. It is formed, and is penetrated between the upper groove and the lower groove.

An open / close valve 23 is provided at the end of the final discharge pipe 22.

The aforementioned filtration device is operated as follows.

The fluid enters the lower space of the housing 1 through the inlet pipe 8 and is closed by the contact plate 17 of the foreign matter discharge pipe 6 of the four fluid passages 4 formed in the blocking plate 2. It enters into the inside of the three filters 5 installed in the upper space of the housing 1 through the three fluid passages 4 which are not.

As the fluid exits the filter 5, foreign matter contained in the fluid is filtered. The fluid in which the foreign substances are filtered out flows out of the filtration apparatus through the outflow pipe 9 and is transferred to the machinery of the next process.

When the filter device is used for a long time, foreign matters accumulate in the filter net of the filter 5, and the fluid is prevented from passing through the filter net of the filter 5, so it is necessary to clean the accumulated foreign matter in the filter net.

The motor and reduction gear assembly 7 operates by receiving an electrical signal caused by a pressure difference flowing between the inflow pipe 8 and the outflow pipe 9 generated as the filter 5 is blocked by the foreign matter. Rotate 6) by 90 °. Then, the fluid flows through the three filters 5 including one filter 5 which has not been used for filtration, and prevents the fluid from flowing into the contact plate 17 of the foreign substance discharge pipe 6. In the filter 5 in which foreign matter is accumulated, the fluid flows back by opening the on-off valve 23 and the fluid flows back, causing the fluid accumulated on the inner surface of the filter back to flow. Naga is discharged through the foreign matter discharge pipe 6 and the final discharge pipe (22).

When the fluid flows back for a certain time and the foreign matter cleaning operation accumulated in the filter network is completed, the opening / closing valve 23 is closed.

As the above operation is repeated, the four filters 5 are cleaned one by one while continuously performing the function as the filtering device. However, the conventional filtration device as described above has the following problems.

First, since the foreign substance discharge pipe 6 is not symmetrical, an eccentric force is generated during rotation, and the eccentric force is between the rotary shaft 14 and the bushing 19, the lower end of the foreign substance discharge pipe 6, and the bushing 21. Between the close contact plate 17 and the bottom surface of the blocking plate 2, etc., it caused noise and abrasion, and also adversely affected the filtration device, such as eccentricity of the connecting pipe 17 connected to the rotating shaft 14. .

Second, since the inner space of the adapter 10, which connects the filter 5 to the fluid passage 4 of the blocking plate 2, is not streamlined, the filter 5 is removed from the inner surface of the filter network by backflow. There was a problem such that the foreign matter is not completely out of the adapter (10) is accumulated inside the adapter (10), and when the filter is filtered, it accumulates again in the filter network.

Third, when installing the filter (5) to the blocking plate (2) put the support plate 12 on the four filter (5) and connecting the block plate 2 and the support plate 12 with a long bolt 13, 4 It is difficult to connect the long bolts 13 with the two filters 5 vertically placed, and the upper surface of the closing plate 11 of the four filters 5 is not on the same plane. It was very difficult to put (5) vertically.

[Purpose of designation]

An object of the present invention is to provide a filtration device that does not generate an eccentric force when the foreign substance discharge pipe rotates.

Another object of the present invention is to provide a filtration device in which foreign matters removed from the filter net by the backflow of the fluid can be flexibly discharged through the adapter.

Still another object of the present invention is to provide a filtration device that is easy to install so that the filter is vertical in installing the filter on the blocking plate.

Summary of the proposal

In order to achieve the above object, the filtration device of the present invention has a Y-type in which the foreign substance discharge pipe is symmetrical, and the inner space of the adapter connecting the fluid passage between the filter and the blocking plate is streamlined, and closes the upper part of the filter. A protrusion is integrally formed on the upper surface of the closing plate, and a hole is formed in the supporting plate so that the protrusion of the closing plate can be inserted.

[Description of Specific Example of Design]

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

The filtration apparatus of the present invention is symmetrical and the contact plate 47 is provided so that the foreign substance discharge pipe 36 can close the two fluid passages 34 in the symmetrical position as shown in FIGS. 4 and 5. ) Are welded to the upper ends of the left and right bend tubes. Therefore, two fluid passages 34 formed in the blocking plate 32 are closed by two contact plates 47.

In the filtration device of the present invention, as shown in FIG. 6, six fluid passages 34 are drilled at regular intervals on the same circumference around the through hole 33 in the blocking plate 32.

The distance between the centers of the two fluid passages 34 in each symmetrical position is equal to the distance between the centers of the two contact plates 47 of the foreign substance discharge pipe 36.

The present invention is designed so that six filters 35 are used, so even though the two filters are closed during the filtration operation, the remaining four filters perform the filtration function. Thus, the filtration of the filtration device compared to the prior art in which four filters are used. Do not run out of capacity.

It is apparent that the present invention is not limited only to the number of six filters, but four or more even numbers may be configured according to the required fluid flow rate.

In the filtration device of the present invention, since the foreign substance discharge pipe 36 is symmetrical as described above, an eccentric force does not occur when the foreign substance discharge pipe 36 rotates.

The present invention also has an adapter 40 connecting the filter 35 and the fluid passage 34 of the blocking plate 32 to be streamlined as shown in FIG.

Therefore, when foreign matter accumulated on the inner surface of the filter net of the filter 35 is separated from the filter net due to the backflow of the fluid and passes through the adapter 40, the foreign material is flexibly exited and no foreign matter accumulates inside the adapter.

Therefore, it is possible to clean the foreign matter in a short time, and when the fluid flows normally for filtration, foreign matter remaining inside the adapter does not accumulate again in the filtering network.

The filtration device of the present invention also includes a closing plate 41 on the top of the filter 35 so that the filter 35 can be maintained vertically and easily installed when the filter 35 is installed on the blocking plate 32. A projection is formed in the center of the upper surface of the.

In addition, in the support plate 42, holes having the same size as the circle connecting the centers of the protrusions of the closing plate 41 can be inserted into the circumference at the same interval as the number of filters 35. .

Therefore, when the filter 35 is installed, the support plate 42 is placed on the upper part of the filter 35, and the protrusion of the closing plate 41 is inserted into the hole drilled at the corresponding position of the support plate 42. By connecting the blocking plate 32 and the support plate 42 with), it is possible to easily install the filter 35 while maintaining the vertical.

On the other hand, the filtering network forming the filter of the filter device is composed of a filter plate with a filtration hole in the steel plate and a filter screen wound around the filter plate. In the present invention, the filter plate of the filter 35 is shown in FIG. It has a rectangular filtration hole.

Therefore, the filter plate of the present invention has a higher porosity than the case of the filter plate of the prior art as shown in FIG. 8a, so that a large amount of fluid can be filtered at the same time.

The filtration device of the present invention works as follows.

The fluid enters the lower space of the housing 31 through the inlet pipe 38 to the two contact plates 47 of the foreign matter discharge pipe 36 of the six fluid passages 34 formed in the blocking plate 32. Through the four fluid passages (34) not closed by the four enters the interior of the filter (35) installed in the upper space of the housing (31).

As the fluid passes through the four filters 35, foreign substances contained in the fluid are filtered out. The fluid in which the foreign substances are filtered out flows out of the filtering device through the outflow pipe 39 and is transferred to the machinery of the next process.

If foreign matter accumulates in the filter network of the filter 35 due to the long time use of the filter device, the fluid is disturbed to pass through the filter network of the filter 35, and a pressure difference between the fluid flowing through the inlet pipe 38 and the outlet pipe 39 is generated. When the pressure difference is different from each other, an electric electric coral is transmitted to the motor and reduction gear assembly 37 so that the motor and reduction gear assembly 37 is operated and the foreign substance discharge pipe 36 is rotated by 60 degrees.

Then, the fluid flows through the four filters 35 including the two filters 35 which have not been used for the filtration, and the fluid flows to the contact plate 47 of the foreign substance discharge pipe 36. In the two filters 35 in which foreign matters are being prevented from accumulating, the fluid flows back by opening the on / off valve 53 and the foreign matter accumulated on the inner surface of the filter net is separated from the filter net by the flow of fluid. And discharged through the final discharge pipe (52).

When the fluid flows back for a certain time and the foreign matter cleaning operation accumulated in the filter network is completed, the opening / closing valve 53 is closed.

As described above, the six filters are cleaned two by one while the filter operation is performed continuously.

The filtration device of the present invention as described above has the following advantages.

First, since the foreign substance discharge pipe 36 is symmetrical, it is not eccentric when rotating. Therefore, wear and noise of the contact portion due to the rotation of the foreign substance discharge pipe 36 may be induced, and the performance of the filtration device may be maintained for a long time.

Second, since the inner space of the adapter 40 which connects the filter 35 with the fluid passage 34 of the blocking plate 32 is streamlined, the foreign matter is flexible when the foreign substance is discharged by the backflow of the fluid. You can leave 40 without leaving.

Third, since protrusions are formed on the upper surface of the closing plate 41 of the filter 35, and holes are inserted in corresponding positions of the support plate 42, it is extremely easy to install the filter 35 vertically. Do.

Fourth, since the filter plate constituting the filter network of the filter 35 is a rectangular filtration hole, the opening ratio is high, so that a large flow rate can be passed.

Although the present invention has been described in detail only with respect to the embodiments described, it will be apparent to those skilled in the art that various modifications or changes can be made within the spirit and scope of the present invention, and such variations and modifications fall within the scope of the appended utility model registration claims. It is natural.

Claims (2)

The housing 31 is divided into a lower space and an upper space, and the lower space and the upper space of the housing are distinguished, and a through hole 33 for penetrating a rotating shaft is formed in the center and the through hole 33 is opened. The number of fluid passages 34 is provided in the upper space of the housing, the blocking plate 32 in which even fluid passages 34 are formed at regular intervals for the passage of fluids on the circumference of a certain size. The same number of filters (35), the adapter 35 to connect the filter 35 and the blocking plate 32, the closing plate (1) for closing the upper portion of the filter 35, of the filter 35 Support plate 42 for supporting the filter 35 by being placed on the closing plate 41 and connected to the blocking plate 32 by the long bolt 43, foreign matter discharge pipe 36 installed in the lower space of the housing , Rotate the foreign substance discharge pipe 36 by a predetermined angle In the fluid filtration apparatus comprising a motor and a reduction gear assembly (37) installed on the upper surface of the housing, an inlet pipe (38) connected to the lower space of the housing and an outlet pipe (39) connected to the upper space, The fluid passages 35 are four or more even and are arranged at regular intervals on the same circumference with respect to the through-holes 33; The foreign substance discharge pipe 36 is symmetrical to close the two fluid passages 34 in the symmetrical position; The inner space of the adapter 40 is streamlined; The filter device, characterized in that formed in the center of the upper surface of the closing plate (41), a hole into which the protrusion of the closing plate (41) can be inserted in the support plate (42). The filtration apparatus according to claim 1, wherein the filter plate constituting the filtration net of the filter (35) has a rectangular filtration hole.