KR100485879B1 - Multi-Layered Filter for Soot Particle Filtration, Apparatus for fabricating the Same and Method for fabricating the Same - Google Patents

Abstract

The present invention relates to a multilayer filter for collecting soot, a manufacturing apparatus thereof, and a manufacturing method thereof. The present invention includes a filter particle supplying step of supplying a plurality of filter particles having different characteristics to the porous screen in a predetermined order, and a winding step of winding the screen loaded with the filter particles in a case having a predetermined shape. It provides a method for producing a filter.

Description

Multi-Layered Filter for Soot Particle Filtration, Apparatus for fabricating the Same and Method for fabricating the Same}

The present invention relates to a filter for collecting soot, and more particularly, to a smoke collecting multilayer filter, a manufacturing apparatus and a manufacturing method thereof, which are configured in a multi-layer so as to effectively collect soot generated in a combustion device such as a diesel engine. .

Conventional soot collection methods are a method using a honeycomb ceramic carrier filter and a filter manufactured by weaving or sintering a metal, a high temperature fiber or a ceramic fiber. The conventional particulate filter for collecting soot is excellent in filtration performance but weak in mechanical durability and thermal durability. Therefore, there is a fundamental difficulty in collecting soot contained in the exhaust gas of a vehicle by using the soot collecting filter in this manner.

In order to solve such a conventional problem, the inventors of the present invention, a soot collection method using a metal or ceramic ball (Ball) and a smoke reduction device using the method (International Patent Application No .: PCT / KR10 / 00112, International Publication No .: WO 01 / 57370) and a filter for collecting soot using non-spherical filter particles instead of beads and a smoke reduction device using the same (Korean Patent Application No. 10-2002-0001902) were proposed.

In the international patent application and domestic patent application, a plurality of metal / ceramic beads or particles were laminated to form a filter. The filter (hereinafter referred to as a "particle filter") is configured so that the filter has a predetermined volume and collects soot in the entire volume. That is, in the particle layer filter, soot is deposited on the interface between the particles constituting the filter (hereinafter referred to as "filter particle") and the pores in the course of passing the gas containing soot through the filter.

Compared to other conventional filters, the particle layer filter proposed in the international patent application (PCT / KR10 / 00112) and the particle layer filter proposed in the Korean patent application (10-2002-0001902) by improving it have a stress due to thermal gradient inside the filter. There is no occurrence and it is excellent in the environment of high temperature and mechanical vibration. Therefore, it is particularly suitable for use in diesel engine cars to be used for collecting exhaust fumes.

In order to improve the filtration efficiency and the filtration capacity relative to the volume of the particle layer filter, the particle layer is composed of multiple layers of exhaust gas in the particle layer with respect to the flow direction. In addition, it is preferable that at least one of a material, a shape, and a size of the filter particles constituting the filter composed of the multilayer particle layer (hereinafter, “multilayer filter”) is different from each other.

In the multi-layer filter proposed in the international patent application (PCT / KR10 / 00112) and the Korean patent application (10-2002-0001902), each particle layer is completely separated by a porous plate and is independent, and the size and the like are separated in separate spaces. Other filter particles were accommodated. In this manner, the function as a multilayer filter can be satisfied, but the manufacturing process of the multilayer filter is complicated because a plurality of porous plates are used.

SUMMARY OF THE INVENTION An object of the present invention is to provide a soot collecting multilayer filter, a manufacturing apparatus thereof, and a method of manufacturing the same, in which the production is simple and the production cost can be reduced while achieving the performance of the multilayer filter sufficiently.

In order to achieve the above object, the present invention provides a filter particle supply step of supplying a plurality of filter particles having different characteristics in a predetermined order, each forming a particle layer on a porous screen continuously at a predetermined interval; It provides a method for producing a multi-stage filter for collecting soot including a winding step of winding the screen loaded with the filter particles in a case of a predetermined shape.

In addition, the filter particles are preferably mixed with the liquid mixture to be supplied to the screen in a semi-baked state.

On the other hand, the method for producing a multi-layer filter for collecting soot is preferably further comprising a filter particle layer thickness control step of adjusting the thickness of the filter particle layer loaded on the screen.

On the other hand, the method of manufacturing the particulate filter for collecting soot is preferably further comprises a screen incident angle control step of adjusting the incident angle of the screen wound on the case.

Then, it is preferable to wind the screen around the case while rotating the case. At this time, the rotation speed of the case is more preferably adjustable. It is also desirable to apply a predetermined tension to the screen. And, it is preferable to vibrate the filter particles loaded on the screen in a predetermined manner.

According to another embodiment of the present invention, the present invention comprises a screen supply means for supplying a porous screen; Filter particle supply means for respectively supplying a plurality of filter particles having different characteristics to the screen supplied from the screen supply means; Provided is an apparatus for manufacturing a multi-layer filter for collecting particulates, including a case rotating means for winding a screen on which filter particles are loaded.

In addition, the apparatus for manufacturing a particulate filter for collecting soot is preferably further comprises a filter particle layer thickness control means for adjusting the thickness of the filter particle layer loaded on the screen.

In addition, the apparatus for producing a multi-layer filter for collecting soot is preferably further comprises a filter particle vibration means for vibrating the filter particles supplied to the screen.

According to another embodiment of the present invention, the present invention includes a screen in which a plurality of filter particles having different characteristics are stacked while forming one particle layer continuously for a predetermined period, and a case for winding the screen to accommodate the screen. It provides a multi-layer filter for collecting soot characterized in that the particle layer wound together with the shape of a rotating spiral.

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On the other hand, the case has a hollow portion, and a porous inner support member; A first side support member coupled to one side of the inner support member and having a hole communicating with the hollow part; It is preferable to include a second side support member coupled to the other side of the inner support member.

The case may further include a porous outer support member installed to surround the filter particle layer accommodated in the space formed by the inner support member, the first side support member, and the second side support member.

In addition, the first side support member and the second side support member is preferably formed with a screen guide of a predetermined shape for supporting the screen, respectively.

According to another embodiment of the present invention, the present invention includes a semi-baked particle forming step of mixing a plurality of filter particles having different characteristics into a semi-baked state by mixing with a predetermined liquid mixture, respectively; It provides a method for producing a multi-stage filter for collecting particulates comprising a lamination step of laminating a plurality of the semi-baked particles in a predetermined order.

The filter particles mixed with the liquid mixture may be injected into a mold having a predetermined shape. In addition, it is preferable to arrange a porous screen between the plurality of filter particle layers.

Therefore, according to the present invention, it is possible to manufacture a multilayer filter having satisfactory performance while reducing production costs.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the multi-layer filter for collecting soot according to the present invention, a manufacturing apparatus and a manufacturing method thereof.

First, referring to Figure 1, when describing the multilayer filter manufacturing apparatus according to the present invention.

On one side of the worktable 1 is provided with a screen supply means 3 for supplying a porous screen 2, respectively. In addition, a filter particle supply means 13 for supplying a plurality of filter particles 11 having different characteristics to the screen 2 supplied from the screen supply means 3 is disposed substantially above the work table 1. And, on the other side of the work table 1, a case rotating means 7 for wrapping the screen 2 on which the filter particles 11 supplied from the filter particle supply means 13 are placed on the case 5 is disposed. Of course, the case rotating means 7 is connected to the case 5 which ultimately receives the filter particles and forms the appearance of the multilayer filter.

Accordingly, when the case rotating means 7 is rotated, the screen 2 and the filter particles 11 loaded on the screen 2 are wound together on the case 5. At this time, since the screen 2 is loaded with filter particle groups 11a, 11b, and 11c having different characteristics, a plurality of particle layers are formed in the case 5. When the winding process in which the particle layer composed of the screen 2 and the filter particles 11 is wound on the case 5 is completed, it is preferable to perform a final sealing operation so that the filter particles 11 do not leak to the outside.

Each component will be described in detail as follows.

The screen 2 is a porous member composed of a thin perforated plate or a mesh, and the filter particles 11 are loaded on the screen 2. That is, the filter particles 11 are supplied by the filter particle supply means 13 onto the screen 2 supplied from the screen supply means 3 so that the filter particles 11 are loaded on the screen 2. .

In addition, the screen 2 is preferably incident on the case 5 at a predetermined angle. To this end, it is good to arrange the work table 1 to form a predetermined angle (θ) with the ground.

The filter particle supply means 13 sequentially orders a plurality of filter particle groups 11a, 11b, and 11c each having a predetermined characteristic such that one or more of the size, material, shape, function, etc. are different in a predetermined order. To the screen 2. In addition, the filter particle supply means 13 may be composed of one or a plurality. For example, in the case of one configuration, filter particles 11a, 11b, 11c having different characteristics may be sequentially stacked on the filter particle supply means 13, and these may be sequentially supplied to the screen 2.

On the other hand, the thickness (t) of the filter particle layer loaded on the screen (2) is preferably adjustable, so that the filter particle layer thickness (t) can be changed continuously or discontinuously within a predetermined range during the process if necessary. It is more preferable to control. This is because, in the multilayer filter, it may be necessary to appropriately adjust the thickness of the particle layer according to the characteristics of the filter particles constituting each filter layer.

Therefore, it is preferable to install one or more filter particle layer thickness control means 15 for adjusting the thickness t of the filter particle layer loaded on the screen 2 in front of the case rotating means 7. For example, as shown in FIG. 1, a member having a predetermined shape, preferably a cylindrical shape, is provided on the upper side of the screen 2, and the member is adjusted up and down in the gap between the member and the screen 2. By this, the thickness t of the filter particle layer can be controlled.

2 to 5, the case and the multi-layer filter for collecting soot will be described in detail as follows.

The case 5 accommodates the filter particles and forms the skeleton of the completed multilayer filter. In the manufacturing process of the multilayer filter, the case 5 is coupled to the case rotating means 7 and rotated by the case rotating means 7 to wind the screen 2 loaded with the filter particles. Therefore, according to the present invention, a plurality of particle layers having different characteristics are wound on the casing 5 continuously without being independent of each other to form a multilayer filter. That is, the plurality of particle layers are wound in a spiral shape on the case 5.

The case 5 is described as follows.

The first side support member 54 and the second side support member 56 are coupled to both side surfaces of the inner support member 52 having a hollow portion 52a and being porous. The first side support member 54 has a hole 54a in communication with the hollow portion 52a of the inner support member 52. That is, the exhaust gas flows through the hole 54a of the first side support member 54 and the hollow portion 52a of the internal support member 52 and is filtered while passing through the particle layer. Reverse flow forms are of course also possible. That is, the exhaust gas may be discharged through the hole 54a of the first side support member 54 and the hollow portion 52a of the internal support member 52 after the exhaust gas flows into the particle layer and is filtered.

The shape of the inner support member 52, the first side support member 54 and the second side support member 56 is not limited, but the inner support member 52 is cylindrical, the first side support member 54 is a ring It is preferable that the shape and the second side support member 56 have a disk shape.

Meanwhile, when the winding process in which the screen 2 is wound around the case 5 is completed, the inner support member 52, the first side support member 54, and the second side face of the filter particle do not leak to the outside. It is preferable to couple the porous outer support member 58 to surround the filter particle layer wound in the space formed by the support member 56. And, the outer support member 58 is more preferably coupled after the screen winding process.

Referring to Figures 1 to 5, it will be described the operation and manufacturing method of the apparatus for producing a multi-stage filter for collecting soot according to the present invention.

First, the one end 2a of the screen 2 of the screen supply means 3 is coupled to the internal support member 52 of the case 5, and then the case rotation means 7 and the filter particle supply means 13 are connected. Operate.

Then, a plurality of filter particle groups having different characteristics in the filter particle supply means 13 are sequentially supplied to the screen 2 in a predetermined order by a predetermined amount. The screen 2 in the state where the filter particles are loaded is wound around the case 5 according to the case rotating means 7. At this time, the thickness t of each particle layer, which will finally form the multilayer filter, is effectively controlled by using the particle layer thickness control means 15. When the winding is complete, the last part 2b of the screen 2 is properly engaged with the screen 2.

Thus, as shown in FIG. 5, the particle layer composed of the filter particles and the screen 2 is wound around the case 5 by a predetermined number of layers in a spiral manner with respect to the central axis. In addition, an outer support member 58 may be further provided around the outermost filter particle layer to protect the filter particle layer from external impact or to maintain the outer shape of the filter.

Therefore, the exhaust gas containing the particulate matter introduced through the inner support member 52 or the outer support member 58 is discharged to the outside through the opposite side in which it is filtered while passing through each particle layer sequentially.

On the other hand, in order to improve the workability and the filling of the filter particles in the manufacturing process of the multilayer filter, it is necessary to give the screen 2 wound on the case 5 and to control the winding speed of the filter to a predetermined value. desirable. Therefore, it is preferable to appropriately control the torque and the rotation speed of the case rotating means 7 and the screen supply means 3.

In addition, when supplying the filter particles to the screen 2, in consideration of the workability and the filling of the layer of particles to be laminated, it is preferable to knead the filter particles and the predetermined liquid mixture at a predetermined mixing ratio and supply them in a semi-baked mortar state. . It is preferable to use water as the liquid mixture used to prepare the mortar, but other liquid materials which are easy to clean and dry well and easily control the mortar viscosity after preparing the filter may be used.

Furthermore, in order to improve the workability and fillability, it is preferable that a filter particle vibrating means (not shown) is provided to vibrate the filter particles supplied to the screen 2. For example, by filling at least one or more of the case rotating means (7), the work table (1), the screen supply means (3) and the thickness control means (15) during the process by forcibly vibrating up and down or left and right. It can increase.

On the other hand, in the above embodiment has been described that the entire particle layer is configured continuously, the present invention is not limited thereto. That is, some of the particle layers may be configured independently as in the prior art, and others may be continuously configured.

Referring to Figure 6, another embodiment of the present invention will be described.

This embodiment is substantially the same as the above-described embodiment. However, in the present embodiment, in order to improve the workability at the time of manufacturing the multi-layer filter and to maintain the airtightness between each particle layer of the finished multi-layer filter more smoothly the embodiment described above.

In the present embodiment, a screen guide is formed on the first side support member 54 and the second side support member 56 to support the screen 2 of each particle layer during the winding process to help the operation proceed smoothly. It was. The screen guide is preferably spiral.

In addition, the screen guide may be formed directly on the side support members (54, 56) or may be formed in a separate structure form. In FIG. 6, a screen guide 62 having a spiral step portion is directly formed on the first side support member 54, and a screen guide 64 having a separate structure is installed on the second side support member 56. . Of course, the screen guide may be integrally formed with both the first side support member 54 and the second side support member 56, and both the first side support member 54 and the second side support member 56 may be formed. It is also possible to form a screen guide in the form of a structure.

On the other hand, the screen 2, the introduction portion constituting the initial inner side is preferably a narrow trapezoidal shape that is wider width of the portion forming the outer layer, and correspondingly, the screen guide, the first side support member and It is preferable to design the shape of the second side support member. This is to prevent the screen 2 and the screen guide from interfering with each other during the winding process.

Therefore, as shown in Fig. 6, the first side support member 54 and the second side support member 56 are formed to be substantially inclined, and the lengths t1 and t2 of the portions in contact with the screen 2 are here. It is preferable that a stepped spiral 62 or a separate spiral guide member 64 be provided with the same spiral throughout.

In addition, as shown in FIG. 7, the length of the portion that is in contact with the screen 2 is not inclined to the first side support member 54 and the second side support member 56. It is of course also possible to install a separate screen guide 66 which becomes smaller in the circumferential direction from the inner side to the outer side which starts to wind.

On the other hand, in order for the screen guides 62 and 64 and the part of the screen 2 to be in contact therewith to be engaged with each other during the winding process, the screen 2 and the contact surface of the screen guides 62 and 64 and the screen 2 By having both sides of the lateral side have a fastening structure of a predetermined shape such as unevenness, it is possible to further improve workability during manufacture and to further increase airtightness between the screen 2 and the case 5.

Meanwhile, according to another embodiment of the present invention, a plurality of filter particles having different characteristics are mixed with a predetermined liquid mixture, respectively, to form a semi-fired particle layer, and the formed plurality of semi-fired particle layers in a predetermined order. A multilayer filter can also be manufactured by laminating | stacking.

In this case, in order to make the particle layer more smoothly, the filter particles mixed with the liquid mixture may be injected into a mold having a predetermined shape.

In addition, a porous screen may be disposed between the plurality of filter particle layers.

The effects of the multi-layer filter for collecting soot according to the present invention, a manufacturing apparatus thereof, and a manufacturing method according to the present invention are as follows.

First, according to the present invention, the space in which the respective filter particles constituting the respective filter particle layers exist is continuously configured and multilayered with respect to the exhaust gas flow. Therefore, there is an advantage that the manufacturing time and cost can be effectively reduced as compared to the discontinuous multilayer filter manufacturing method that separates each particle layer independently.

Second, by changing the control factors in the manufacturing process of the multilayer filter, it is possible to manufacture a variety of multilayer filters having various filtration performance and hydrodynamic characteristics using the same manufacturing apparatus and case.

Third, it is easier to manufacture a multilayer filter composed of a higher number of layers while having a thinner layer thickness than the conventional method.

Fourth, it is possible to implement a multi-functional filter by configuring a multi-stage particle layer of different functions.

1 is a configuration diagram schematically showing an embodiment of an apparatus for manufacturing a soot collecting multilayer filter according to the present invention.

2 is an exploded perspective view showing an exploded view of the case of FIG.

3 is a perspective view showing an embodiment of a multi-layer filter for collecting soot according to the present invention

4 is a cross-sectional view taken along line II of FIG. 3.

5 is a cross-sectional view taken along the line II-II of FIG.

6 is a perspective view showing another embodiment of the multi-layer filter for collecting soot according to the present invention

7 is a perspective view showing another embodiment of the multi-layer filter for collecting soot according to the present invention

<Description of the symbols for the main parts of the drawings>

1: worktable 2: screen

3: screen supply means 5: case

7: case rotation means 11: filter particles

13: filter particle supply means 15: particle layer thickness control means

52: internal support member 54: first side support member

56: second side support member 58: external support member

       62, 64: screen guide

Claims (19)

A filter particle supplying step of supplying a plurality of filter particles having different characteristics to each other in a predetermined order while forming one particle layer on a porous screen continuously at predetermined intervals; A method of manufacturing a multi-layer filter for collecting particulates, the method comprising: winding a screen on which filter particles are loaded to a case of a predetermined shape. The method of claim 1, wherein the filter particles are mixed with a liquid mixture and supplied to the screen in a semi-sintered state.  According to claim 1 or 2, The method for producing a multi-stage filter for collecting soot is a multi-stage filter for collecting particulates, characterized in that further comprising a filter particle layer thickness control step of adjusting the thickness of the filter particle layer loaded on the screen. Manufacturing method. According to claim 1 or 2, The method for producing a multi-stage filter for collecting soot multi-stage filter for collecting soot, characterized in that it further comprises a screen incident angle control step of adjusting the incident angle of the screen wound on the case. Manufacturing method. The method for manufacturing a multi-layer filter for collecting particulates according to claim 1 or 2, wherein the screen is wound around the case while the case is rotated. The method of claim 5, wherein the rotation speed of the case is adjustable. The method of manufacturing a multilayer filter for collecting particulates according to claim 1 or 2, wherein a predetermined tension is applied to the screen. The method according to claim 1 or 2, wherein the filter particles loaded on the screen are vibrated in a predetermined manner. Screen supply means for supplying a porous screen; Filter particle supply means for respectively supplying a plurality of filter particles having different characteristics to the screen supplied from the screen supply means; Apparatus for producing a soot collection multi-layer filter comprising a case rotating means for winding the screen on which the filter particles are loaded. 10. The apparatus of claim 9, wherein the apparatus for manufacturing a multi-layer filter for collecting soot further comprises a filter particle layer thickness control means for controlling the thickness of the filter particle layer loaded on the screen. 11. The apparatus for manufacturing a multilayer filter for collecting particulate smoke according to claim 9 or 10, wherein the apparatus for producing a multilayer filter for collecting soot further comprises filter particle vibrating means for vibrating filter particles supplied to the screen. . A plurality of filter particles having different characteristics are configured to include a screen in which a single layer of particles is continuously formed for a predetermined period, and a case for wrapping the screen. The particle layer wound together with the screen has a rotating spiral shape. Multi-layer filter for soot collection. delete 13. The apparatus of claim 12, wherein the case has a hollow portion and is porous; A first side support member coupled to one side of the inner support member and having a hole communicating with the hollow part; And a second side support member coupled to the other side of the inner support member. 15. The method of claim 14, wherein the case further comprises a porous outer support member is installed to surround the filter particle layer accommodated in the space formed by the inner support member, the first side support member and the second side support member. Multi-layer filter for soot collection. The multi-layered filter for collecting particulates according to claim 15, wherein the first side support member and the second side support member are each formed with a screen guide having a predetermined shape for supporting the screen. A semi-baking particle forming step of mixing a plurality of filter particles having different characteristics into a semi-baked state by mixing with a predetermined liquid mixture, respectively; A method of manufacturing a multi-stage filter for collecting particulates, comprising a laminating step of winding and stacking a plurality of the semi-baked particles in a predetermined order. 18. The method of claim 17, wherein the filter particles mixed with the liquid mixture are injected into a mold having a predetermined shape. 19. The method of claim 17 or 18, wherein a porous screen is disposed between the plurality of filter particle layers.