Centrifugal material distribution shaft of ceramic fiber filter cartridge forming equipment

Abstract

The utility model provides a centrifugal material distribution shaft of ceramic fiber filter cartridge forming equipment, which comprises a mounting shaft section and a material distribution shaft section, and a flow channel for slurry to flow is arranged in the centrifugal material distribution shaft; wherein the mounting shaft section is used for being connected with a device for driving the mounting shaft section to rotate, and one end of the mounting shaft section is provided with a slurry feeding connector; the material distribution shaft section is provided with a plurality of material distribution holes which are evenly distributed and communicated with the flow channel, and the material distribution holes are distributed in the axial direction and the circumferential direction of the centrifugal material distribution shaft in a staggered mode. On the premise that the strength of the centrifugal material distribution shaft is guaranteed, the total length of the material distribution holes in the centrifugal material distribution shaft can be greatly increased, the axial relative distance between the material distribution holes can be reduced to the minimum (can be zero), slurry can be continuously discharged in the axial direction of the ceramic fiber filter cartridge, and the material distribution efficiency is improved. And the problems of non-uniform porosity, non-uniform aperture and non-uniform strength of the ceramic filter tube are solved.

Description

Technical Field

[0001] The utility model relates to the field of ceramic fiber filter cartridge forming equipment, in particular to a centrifugal distribution shaft of ceramic fiber filter cartridge forming equipment. Background Art

[0002] In the field of glass kilns, coking furnaces, industrial boilers, waste incineration and other flue gas multi-pollutant purification, ceramic fiber filter cartridges are a widely used filter that uses rigid microporous materials as filter elements. Compared with traditional granular filter materials, ceramic fiber filter cartridges have a larger specific surface area of ​​fiber filter materials, have greater interface adsorption and can intercept suspended matter, and have a good filtration effect; compared with traditional filter materials such as cloth bags, ceramic fiber filter cartridges can be used in high temperature or even ultra-high temperature environments; compared with porous ceramics and metal filter materials, ceramic fiber filter cartridges do not require sintering, have low resistance and save energy, and have good chemical stability and thermal shock resistance.

[0003] The preparation equipment and method of ceramic fiber filter cartridges in the prior art are generally fired after molding. In fact, due to problems such as the molding process and the firing process, the ceramic fiber filter cartridge cannot ensure that the pores of the ceramic fiber filter cartridge remain consistent and the ceramic fiber distribution is clearly layered. Therefore, the actual use effect of the ceramic fiber filter cartridge is not very ideal. During the molding process of the ceramic fiber filter cartridge, whether the material can be evenly and continuously distributed seriously affects whether the pores of the finished product are uniform and whether the porosity is maintained within a small range. Due to the high difficulty of processing and molding ceramic fiber filter cartridges, few domestic companies can independently produce high-quality ceramic tubes. Utility Model Content

[0004] In view of this, an embodiment of the utility model provides a centrifugal distribution shaft of a ceramic fiber filter cartridge forming device to eliminate or improve one or more defects existing in the prior art.

[0005] The technical solution of the utility model is as follows:

[0006] The centrifugal distribution shaft comprises a mounting shaft section and a distribution shaft section, wherein a flow channel for slurry flow is arranged inside the centrifugal distribution shaft; wherein the mounting shaft section is used to be connected to a device driving the rotation thereof, and a slurry feeding interface is arranged at one end of the mounting shaft section; the distribution shaft section is provided with a plurality of distribution holes evenly distributed and connected to the flow channel, wherein each of the distribution holes is staggeredly distributed in the axial direction and the circumferential direction of the centrifugal distribution shaft.

[0007] In some embodiments, each of the distribution holes of the centrifugal distribution shaft is a rectangular groove structure.

[0008] In some embodiments, each of the distribution holes is a straight hole, and the opening direction is parallel to the axial direction of the centrifugal distribution axis, and one end thereof along the axial direction is on the same radial section as the end of the adjacent distribution hole close to the distribution hole, and all of the distribution holes are combined into a connected long groove structure in the axial projection.

[0009] In some embodiments, the distribution holes are evenly distributed along a cylindrical spiral line on the centrifugal distribution axis.

[0010] In some embodiments, each of the distribution holes is an inclined hole or an arc-shaped hole, and the end contour of each of the distribution holes on the same length side is along a cylindrical spiral line on the centrifugal distribution shaft.

[0011] In some embodiments, a positioning hole is provided at one end of the centrifugal distribution shaft away from the slurry feeding interface, the positioning hole is located at the center of the shaft end, and the positioning hole is connected to or not connected to the flow channel.

[0012] In some embodiments, at least one edge of the distribution hole along the axial direction and bordering the outer circumferential surface of the centrifugal distribution shaft has a transitional fillet, chamfer or flared structure.

[0013] In some embodiments, one edge of the distribution hole has a first rounded corner, and the other edge has a second rounded corner; wherein, in the rotation direction of the centrifugal distribution shaft, the first rounded corner is located upstream of the second rounded corner, and the size of the first rounded corner is smaller than the second rounded corner.

[0014] In some embodiments, the mounting shaft segment is integrally formed with the fabric shaft segment.

[0015] In some embodiments, the material distribution shaft section includes an outer sleeve and an inner shaft, wherein the outer sleeve is sleeved on the outer circumference of the inner shaft; the outer sleeve is made of a polymer wear-resistant material, and the inner shaft is made of an alkali-resistant metal material.

[0016] According to the centrifugal distribution shaft of the ceramic fiber filter cartridge forming equipment in the embodiment of the utility model, the beneficial effects that can be obtained include at least:

[0017] The distribution holes of the centrifugal distribution shaft of the utility model embodiment are staggered in the axial direction and circumferential direction of the centrifugal distribution shaft. Compared with the conventional arrangement along the same generatrix at intervals, the total length of the distribution holes on the centrifugal distribution shaft can be greatly increased while ensuring the strength of the centrifugal distribution shaft. The axial relative spacing of each distribution hole can be reduced to a minimum (can be zero), so that the slurry can be discharged continuously and uninterruptedly in the axial direction of the ceramic fiber filter cartridge, which is conducive to solving the problems of uneven porosity and pore size and uneven strength of the ceramic filter tube.

[0018] Additional advantages, purposes, and features of the present invention will be partially described in the following description, and will become partially apparent to those skilled in the art after studying the following, or may be learned from the practice of the present invention. The purposes and other advantages of the present invention can be achieved and obtained by the structures specifically pointed out in the written description and its claims and the drawings.

[0019] Those skilled in the art will understand that the purposes and advantages that can be achieved by the present invention are not limited to the above specific description, and the above and other purposes that can be achieved by the present invention will be more clearly understood based on the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present application, and do not constitute a limitation of the present invention. The components in the drawings are not drawn to scale, but are only for the purpose of illustrating the principles of the present invention. In order to facilitate the illustration and description of some parts of the present invention, the corresponding parts in the drawings may be enlarged, that is, they may become larger relative to other components in the exemplary device actually manufactured according to the present invention. In the drawings:

[0021] Figure 1 It is a schematic structural diagram of a centrifugal distribution shaft in one embodiment of the utility model.

[0022] Figure 2 It is a structural schematic diagram of a distribution shaft section of a centrifugal distribution shaft in another embodiment of the utility model.

[0023] Figure 3 for Figure 2 The axial projection of the material distribution hole in the embodiment is a schematic diagram of the structure.

[0024] Figure 4 The figure is a schematic structural diagram of the inner shaft of the centrifugal distribution shaft in another embodiment of the utility model.

[0025] Figure 5 It is a schematic structural diagram of the outer sleeve of the centrifugal distribution shaft in another embodiment of the utility model.

[0026] Figure 6 The figure is a schematic structural diagram of the segmented welding of the centrifugal distribution shaft in another embodiment of the utility model.

[0027] Figure 7 It is a schematic diagram of the cross-sectional structure of a material distribution hole in an embodiment of the present utility model. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with the implementation mode and the accompanying drawings. Here, the schematic implementation mode of the utility model and its description are used to explain the utility model, but are not used as a limitation of the utility model.

[0029] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0030] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, elements, steps or components, but does not exclude the presence or addition of one or more other features, elements, steps or components.

[0031] It should also be noted that, unless otherwise specified, the term “connection” herein may refer not only to a direct connection but also to an indirect connection involving an intermediate.

[0032] The utility model provides a centrifugal distribution shaft of a ceramic fiber filter cartridge forming device, which is mainly used to evenly distribute the mixed slurry into a forming mold to form the ceramic fiber filter cartridge. The centrifugal distribution shaft of the utility model embodiment also serves as an inner mold of the ceramic fiber filter cartridge.

[0033] In some embodiments, Figure 1 As shown, the centrifugal distribution shaft may include a mounting shaft section 510 and a distribution shaft section 520, and a flow channel 501 for slurry to flow is provided inside the centrifugal distribution shaft.

[0034] The mounting shaft section 510 is used to connect with a device driving the rotation thereof, and one end of the mounting shaft section 510 is provided with a slurry feed interface 511. The slurry feed interface 511 of the flow channel 501 can be connected with a feeding part to provide a continuous supply of slurry, and the other end of the flow channel 501 can be blocked so that the slurry can only flow out from the distribution hole 502 described below.

[0035] The material distribution shaft section 520 is provided with a plurality of material distribution holes 502 which are evenly distributed and communicated with the flow channel 501 , wherein the material distribution holes 502 are staggeredly distributed in the axial direction and the circumferential direction of the centrifugal material distribution shaft.

[0036] At present, some equipment in foreign countries or abroad will intermittently slot the cloth holes on a generatrix of the cloth shaft, and cannot be slotted into a continuous long slot due to strength issues. Each cloth hole will have a certain interval in the axial direction. The porosity and pore size of the ceramic fiber filter cartridge corresponding to this interval area and the cloth hole area are generally very different, which is also easy to cause uneven strength of the ceramic fiber filter cartridge.

[0037] The distribution holes of the embodiment of the utility model are staggered in the axial direction and the circumferential direction of the centrifugal distribution shaft. Under the premise of ensuring the strength of the centrifugal distribution shaft, the total length of the distribution holes on the centrifugal distribution shaft can be greatly increased, and the axial relative spacing of each distribution hole can be reduced to a minimum (can be zero), so that the slurry can be discharged continuously and uninterruptedly in the axial direction of the ceramic fiber filter cartridge, which is conducive to solving the problems of uneven porosity and pore size and uneven strength of the ceramic filter tube.

[0038] In some embodiments, Figure 1 and Figure 2 As shown, each distribution hole 502 of the centrifugal distribution shaft is a rectangular groove structure. Setting the distribution hole as a rectangular groove structure is conducive to ensuring uniform material discharge at each position in the axial direction and in a single distribution hole. Preferably, the distribution hole is a length end in the axial direction of the centrifugal distribution shaft and a width end in the tangential direction of the centrifugal distribution shaft.

[0039] In one embodiment, if Figure 2 As shown, each distribution hole 502 is a straight hole, and the opening direction is parallel to the axial direction of the centrifugal distribution axis, and one end thereof along the axial direction is on the same radial section as the end of the adjacent distribution hole close to the distribution hole, as shown in FIG. Figure 3 As shown, all the material distribution holes 502 are combined into a connected long slot structure in axial projection.

[0040] In another embodiment, if Figure 1 As shown, each distribution hole 502 is an inclined hole or an arc-shaped hole, and the end contour of each distribution hole 502 on the same length side is along a cylindrical spiral line on the centrifugal distribution shaft. Figure 1 In the embodiment, the material distribution holes 502 can be arranged at small intervals, or can be arranged in a continuous manner with narrow grooves.

[0041] In some embodiments, Figure 1 As shown, a positioning hole 503 is provided at one end of the centrifugal distribution shaft away from the slurry feed interface 511. The positioning hole 503 is located at the center of the shaft end. The positioning hole 503 may be connected to or not connected to the flow channel 501, preferably not connected. The installation shaft section 510 of the centrifugal distribution shaft is a fixed end with a shorter length; the distribution shaft section 520 is a suspended end with a longer length. The positioning hole 503 can be positioned by a structure similar to a top.

[0042] In some embodiments, Figure 7As shown, at least one edge of the distribution hole 502 along the axial direction and intersecting with the outer peripheral surface of the centrifugal distribution shaft has a transitional fillet, chamfer or flared structure. The fillet, chamfer or flared structure can facilitate the outflow of the slurry.

[0043] Preferably, one edge of the material distribution hole 502 has a first rounded corner 5021, and the other edge has a second rounded corner 5022. In the rotation direction of the centrifugal material distribution shaft, the first rounded corner 5021 is located upstream of the second rounded corner 5022, and the size of the first rounded corner 5021 is smaller than the second rounded corner 5022. The first rounded corner 5021 and the second rounded corner 5022 can also be set as chamfered structures, and similarly, the above-mentioned positional relationship and size relationship can also be maintained.

[0044] For example, Figure 7 When the centrifugal cloth shaft rotates counterclockwise, the first fillet 5021 is the front fillet, and the second fillet 5022 is the rear fillet. In the direction of rotation, the front chamfer is used to smooth the slurry, and the rear chamfer is used to smooth the slurry, ensuring that the inner wall of the ceramic fiber filter cartridge is smoothed during the rotation process to prevent the inner wall of the ceramic fiber filter cartridge from cracking or roughening.

[0045] In some embodiments, Figure 1 As shown, the installation shaft section 510 can be integrally formed with the material distribution shaft section 520 to facilitate processing and manufacturing.

[0046] In some embodiments, Figure 4 , 5 As shown in Figure 6, the material distribution shaft section 520 includes an outer sleeve 540 and an inner shaft 530, and the outer sleeve 540 is sleeved on the outer circumference of the inner shaft 530; the outer sleeve 540 can be made of a polymer wear-resistant material, and the inner shaft 530 can be made of an alkali-resistant metal material. The material distribution shaft section 520 is configured as a layered structure of an outer sleeve and an inner shaft, which can reduce the overall weight of the material distribution shaft section, thereby reducing the downward tilt error of the centrifugal material distribution shaft due to gravity, which is beneficial to the centrifugal forming process of the ceramic fiber filter cartridge.

[0047] like Figure 4 As shown, the inner shaft 530 can be a tapered shaft structure or a stepped shaft structure with two or more sections of different shaft diameters.

[0048] For example, the inner shaft 530 is a stepped shaft structure with two or more sections of different shaft diameters. Figure 5 As shown, the outer sleeve 540 includes more than two sections of sub-sleeves with different apertures, the number of sections of the sub-sleeves is the same as the number of sections of the stepped shaft, and the aperture of each section of the sub-sleeve is the same as the outer diameter of the corresponding stepped shaft.

[0049] like Figure 4 and Figure 6As shown, the stepped shaft is integrally formed, and the ends of the sub-sleeves of each section that cooperate with each other have a spigot for socket-jointing, and are connected by hot melting or welding. The spigot may include a notch 541 and a protrusion 542 for plug-in connection.

[0050] like Figure 4 and Figure 7 As shown, the inner shaft 530 is connected to the outer sleeve 540 by key connection, set screw connection and / or interference fit connection. For example, a keyway may be machined on the outer circumference of each stepped shaft segment of the inner shaft 530, and a keyway may be machined on the inner hole of each sub-sleeve of the outer sleeve 540, and connected by a key 531. The keyways of each segment may be staggered to avoid being on the same generatrix.

[0051] According to the centrifugal distribution shaft of the ceramic fiber filter cartridge forming equipment in the embodiment of the utility model, the beneficial effects that can be obtained include at least:

[0052] (1) The distribution holes of the centrifugal distribution shaft of the utility model embodiment are staggered in the axial direction and circumferential direction of the centrifugal distribution shaft. Under the premise of ensuring the strength of the centrifugal distribution shaft, the total length of the distribution holes on the centrifugal distribution shaft can be greatly increased, and the axial relative spacing of each distribution hole can be reduced to a minimum (can be zero), so that the slurry can be discharged continuously and uninterruptedly in the axial direction of the ceramic fiber filter cartridge, which is conducive to solving the problems of uneven porosity and pore size and uneven strength of the ceramic filter tube.

[0053] (2) The opening of the centrifugal cloth shaft of the utility model embodiment has a transitional fillet, chamfer or flared structure, which is conducive to the outflow of slurry. Preferably, the opening is set as a front chamfer / fillet, a front chamfer / fillet, the size of the front chamfer / fillet is smaller than the size of the rear chamfer / fillet, the front chamfer / fillet is used to smooth the slurry, and the front chamfer / fillet flattens the slurry to ensure that the inner wall of the ceramic fiber filter cartridge is smoothed during the rotation process to prevent the inner wall of the ceramic fiber filter cartridge from cracking or roughening.

[0054] In the present invention, features described and / or illustrated for one embodiment may be used in the same manner or in a similar manner in one or more other embodiments, and / or combined with features of other embodiments or replace features of other embodiments.

[0055] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the embodiments of the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A centrifugal distribution shaft for ceramic fiber filter cartridge forming equipment, characterized in that: The centrifugal distribution shaft comprises a mounting shaft section and a distribution shaft section, and a flow channel for slurry to flow is provided inside the centrifugal distribution shaft; Wherein, the installation shaft section is used to connect with a device driving it to rotate, and one end of the installation shaft section is provided with a slurry feeding interface; The distribution shaft section is provided with a plurality of distribution holes which are evenly distributed and communicated with the flow channel, wherein the distribution holes are staggeredly distributed in the axial direction and the circumferential direction of the centrifugal distribution shaft.

2. The centrifugal distribution shaft of the ceramic fiber filter cartridge forming equipment according to claim 1, characterized in that: Each of the distribution holes of the centrifugal distribution shaft is a rectangular groove structure.

3. The centrifugal distribution shaft of the ceramic fiber filter cartridge forming equipment according to claim 2, characterized in that: Each of the distribution holes is a straight hole, and the opening direction is parallel to the axial direction of the centrifugal distribution shaft, and one end thereof along the axial direction is on the same radial section as the end of the adjacent distribution hole close to the distribution hole, and all of the distribution holes are combined into a connected long groove structure in the axial projection.

4. The centrifugal distribution shaft of the ceramic fiber filter cartridge forming equipment according to claim 3, characterized in that: The distribution holes are evenly distributed along a cylindrical spiral line on the centrifugal distribution shaft.

5. The centrifugal distribution shaft of the ceramic fiber filter cartridge forming equipment according to claim 2, characterized in that: Each of the distribution holes is an inclined hole or an arc-shaped hole, and the end contour of each of the distribution holes on the same length side is along a cylindrical spiral line on the centrifugal distribution shaft.

6. The centrifugal distribution shaft of the ceramic fiber filter cartridge forming equipment according to claim 3 or 5, characterized in that: A positioning hole is provided at one end of the centrifugal distribution shaft away from the slurry feeding interface. The positioning hole is located at the center of the shaft end. The positioning hole is connected to or not connected to the flow channel.

7. The centrifugal distribution shaft of the ceramic fiber filter cartridge forming equipment according to claim 3 or 5, characterized in that: At least one edge of the distribution hole along the axial direction and bordering the outer peripheral surface of the centrifugal distribution shaft has a transitional fillet, chamfer or flared structure.

8. The centrifugal distribution shaft of the ceramic fiber filter cartridge forming equipment according to claim 7, characterized in that: One edge of the fabric hole has a first rounded corner, and the other edge has a second rounded corner; Wherein, in the rotation direction of the centrifugal distribution shaft, the first rounded corner is located upstream of the second rounded corner, and the size of the first rounded corner is smaller than the second rounded corner.

9. The centrifugal distribution shaft of the ceramic fiber filter cartridge forming equipment according to claim 1, characterized in that: The installation shaft section and the material distribution shaft section are integrally formed.

10. The centrifugal distribution shaft of the ceramic fiber filter cartridge forming equipment according to claim 1, characterized in that: The material distribution shaft section comprises an outer sleeve and an inner shaft, wherein the outer sleeve is sleeved on the outer circumference of the inner shaft; the outer sleeve is made of a polymer wear-resistant material, and the inner shaft is made of an alkali-resistant metal material.

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