WO2020186975A1 - 过滤结构、过滤结构的制备方法以及滤芯 - Google Patents

过滤结构、过滤结构的制备方法以及滤芯 Download PDF

Info

Publication number
WO2020186975A1
WO2020186975A1 PCT/CN2020/076537 CN2020076537W WO2020186975A1 WO 2020186975 A1 WO2020186975 A1 WO 2020186975A1 CN 2020076537 W CN2020076537 W CN 2020076537W WO 2020186975 A1 WO2020186975 A1 WO 2020186975A1
Authority
WO
WIPO (PCT)
Prior art keywords
support
filter
porous
filter material
wound
Prior art date
Application number
PCT/CN2020/076537
Other languages
English (en)
French (fr)
Inventor
高麟
汪涛
李翔
Original Assignee
成都易态科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 成都易态科技有限公司 filed Critical 成都易态科技有限公司
Publication of WO2020186975A1 publication Critical patent/WO2020186975A1/zh

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/10—Spiral-wound membrane modules
    • B01D63/101—Spiral winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/10—Spiral-wound membrane modules

Definitions

  • the present invention relates to the technical field of filter devices, in particular, to a support structure of a filter structure and a filter element.
  • the application of the flexible metal film is mainly applied to the filter element for gas-solid and liquid-solid filtration in the ceramic industry, metallurgy, coal chemical industry, thermal power generation and other harsh environments such as high temperature, high pressure and strong corrosiveness.
  • the existing flexible bag filter element using flexible metal film as the filter material is usually cut and welded to form a film tube according to the diameter and length of the film tube, and then a special purpose is used in the bag.
  • the supporting structure is equipped with a sealing structure at both ends for use.
  • This type of filter element has a wide applicable temperature range and large air flux, but still has the following problems:
  • the film tube adopts a straight seam welding structure.
  • the pressure capacity of the straight seam structure is poor, so it can only be used under a lower pressure difference;
  • the support structure will friction with the membrane cartridge, which will cause the filter element to fail and affect the reliability of the filter element.
  • the internal support structure will reduce the effective filter area of the filter element, resulting in increased filter element resistance and operating costs;
  • the filter element has a poor sealing structure or a good sealing effect but a complicated structure, resulting in a significant increase in filtration pressure and high cost.
  • An object of the present invention is to provide a support structure to solve the problems of poor strength and thicker support structure in the prior art. Another object of the present invention is to provide a filter structure and a method for preparing the filter structure to solve the problem of poor strength of the filter structure in the prior art. Another object of the present invention is to provide a filter element to solve the problems of poor filter element strength and small effective filter area in the prior art. Another object of the present invention is to provide a sealing structure to solve the problem of poor sealing structure or good sealing effect but complicated structure in the prior art.
  • the first supporting structure provided by the present invention is as follows:
  • the support structure of the filter structure includes a support cylinder wound from a strip-shaped coil, the coil has a porous structure, and the seam formed after the coil is wound is not connected to the support cylinder
  • the central axis is parallel.
  • the support cylinder When the support cylinder is subjected to internal and external pressure, its maximum principal stress is perpendicular to its central axis and acts on each circular section; traditional longitudinal welded pipes (that is, the joints are parallel to the central axis of the welded pipe), the joints will directly bear the maximum
  • the main stress of the welding seam requires higher strength.
  • the stress that the seam is mainly subjected to is the main stress component, namely radial stress and axial stress.
  • the two stress values are significantly smaller than the principal stress of the longitudinally welded pipe Therefore, under the same working pressure and the same pipe diameter, the thickness of the support structure of the present invention can be significantly reduced, and the porosity can be significantly increased, thereby increasing the effective filtering area of the filtering structure, and improving the back blow cleaning effect and filtering efficiency.
  • the center line of the coil is wound into a spiral shape.
  • the stiffness of the spiral forming support structure is better, which can significantly reduce the stress on the joints.
  • the spiral forming support structure is more conducive to ensuring its roundness, straightness and other geometric tolerance dimensions, and is beneficial to improve the strength of the support structure.
  • the coil is rectangular.
  • the coil is a regular rectangle, it can be ensured that the joint has a regular shape, and when the center line of the coil is wound into a spiral shape, the seam is also a spiral shape, thereby facilitating the control of the stability of the helix angle , Improve the surface flatness of the support tube.
  • the spiral is a cylindrical spiral; the radial projection of the cylindrical spiral is a circle. Therefore, the shape of the support cylinder is consistent everywhere, and the support effect is better.
  • the helix angle ⁇ of the helix is 50-75°.
  • the larger the helix angle the narrower the required coil width, and the joint stress will be reduced, but the butt length of the support structure of the same length will increase, and the production efficiency will decrease; when the spiral is a cylinder Helix; when the helix angle ⁇ of the helix is 50-75°, the combined stress on the joint is 60-85% of the principal stress of the longitudinally welded pipe, and high production efficiency can be maintained.
  • the two long sides of the coil are wound and formed by contact welding or adhesive tape. Therefore, the bonding force of the joint is strong and the production efficiency is high.
  • argon arc welding is preferred, which is easy to process and has high strength.
  • the width of the welding is 2-4mm. As a result, a strong bonding force is ensured, and it is also avoided that the welding seam is too wide to affect the filtering area.
  • the porosity of the coiled material is 50-80%.
  • the strength is lower.
  • the porosity of the coil is lower than the above range, the effective filtration area will be reduced. Therefore, when the porosity of the coil is 50-80%, a higher effective filtration area and strength can be ensured.
  • the thickness of the coil is 0.6-1 mm.
  • the thickness of the coil is higher than the above numerical range, it is not conducive to spiral forming; when the thickness of the coil is below the above numerical range, the strength is lower. Therefore, when the thickness of the coil is 0.6-1 mm, a higher molding effect and strength can be ensured.
  • the filter element includes a filter structure and a support structure, and the support structure is the support structure of the aforementioned filter structure.
  • the support structure is located inside the filter structure; the filter structure is a film tube wound by a flexible metal film.
  • the flexible metal film refers to any porous film in the background art.
  • the second supporting structure provided by the present invention is as follows:
  • the support structure of the filter structure includes a rigid frame, the rigid frame includes a support ring whose outer diameter matches the inner diameter of the filter structure, and at least two support rods that match the length of the filter structure and are connected to the support ring; The support rod is connected with the inner wall of the support ring.
  • the rigid framework of the present invention proposes to connect the support rod with the inner wall of the support ring.
  • the support ring provided in this way can improve the length-diameter ratio of the support structure and change the stress state from a long cylinder to a short cylinder, thereby improving support Structural rigidity;
  • the support structure adopting the rigid framework of the present invention has better rigidity under the same working conditions, better resistance to negative pressure, and can reduce the contact area between the support structure and the filter structure, thereby increasing the effective filter area and improving back blow cleaning Effect and filtration efficiency.
  • the support rod can provide secondary support to the filter structure.
  • the support ring is distributed at a distance of 150-200mm. Thus, a better supporting effect is ensured.
  • the diameter of the ring body of the support ring is 3-5 mm. Therefore, firstly, a wider gas flow channel is ensured, and secondly, a better strength is ensured, thereby producing a better supporting effect.
  • the support rods are distributed at an interval of 20-30 mm. Thus, a better supporting effect is ensured.
  • the support rod is cylindrical. Therefore, a better supporting effect is ensured, and the filter structure is prevented from being damaged due to mechanical wear.
  • the diameter of the support rod is 3-5 mm.
  • the supporting structure further includes a supporting cylinder arranged outside the rigid frame, the supporting cylinder is formed by winding a strip-shaped coil, the coil having a porous structure, and the coil is wound after the The formed seam is not parallel to the central axis of the support cylinder.
  • the thickness of the coil is 0.6-1 mm; the porosity of the coil is 50-80%.
  • the support structure is located inside the filter structure; the filter structure is a film tube wound by a flexible metal film.
  • the third supporting structure provided by the present invention is as follows:
  • the support structure of the filter structure includes: a rigid support layer and an elastic support layer, the rigid support layer is arranged inside the elastic support layer; the support structure is arranged inside the filter structure.
  • the elastic support layer can be elastically deformed inward and outside, so that it can support the filter structure well in both the filtering and back-blowing state; at the same time, because the elastic support layer can deform inward, It can effectively increase the deformation of the filter structure from filtering to back blowing, so as to realize the shaking of the dust on the surface of the filter structure during back blowing, which is beneficial to the peeling of the dust on the surface of the filter structure during back blowing.
  • the rigid framework provides secondary support to the filter structure to ensure reliable strength and rigidity of the filter structure, while ensuring a high effective filter area to the greatest extent.
  • the elastic support layer includes an elastic mesh cylinder with a porosity of 70-90% and a thickness of 0.4-0.8 mm. This ensures a high filtration area and suitable elasticity.
  • the elastic net cylinder is a net cylinder made of cut-and-drawn net or woven net.
  • Cut-and-drawn mesh refers to the metal mesh obtained after punching and stretching the steel plate. Compared with the traditional woven mesh, the cut-and-drawn mesh has higher node strength and better elasticity, which helps to improve the strength of the support structure.
  • Woven mesh refers to a metal mesh woven by metal wires. Because the metal wires are interwoven, the opening diameter of the woven mesh can be significantly smaller than that of a cut-and-drawn mesh. When a metal mesh woven with finer metal wires is used, A lighter and thinner flexible mesh cylinder can be obtained.
  • the rigid support layer further includes a rigid frame including a support ring whose outer diameter matches the inner diameter of the filter structure, and at least two support rods that match the length of the filter structure and are connected to the support ring. Since the elastic mesh cylinder is very thin and has a high porosity, the support effect can be improved by setting a rigid skeleton, and the support structure with a composite structure is still significantly better than the existing porous tube support structure in weight and support effect.
  • the support rod is connected to the inner wall of the support ring.
  • the support ring is distributed at an interval of 150-200mm; the ring body diameter of the support ring is 3-5mm.
  • the support rods are distributed at an interval of 20-30 mm.
  • the support rod is cylindrical.
  • the diameter of the support rod is 3-5 mm.
  • the fourth support structure provided by the present invention is as follows:
  • the supporting structure of the filter structure includes an elastic net cylinder, an upper joint connected with the head of the elastic net cylinder, and a lower joint connected with the tail of the elastic net cylinder.
  • the elastic support layer can be elastically deformed to the inside, thereby reducing the influence on the filtering surface of the filtering structure.
  • the elastic support layer can be elastically deformed outwards, so as to better support the filter structure and facilitate the peeling of dust on the surface of the filter element during reverse blowing.
  • the porosity of the elastic mesh cylinder is 70-90%, and the thickness is 0.4-0.8 mm. This ensures a high filtration area and suitable elasticity.
  • the elastic net cylinder is a net cylinder made of cut-and-drawn net or woven net.
  • the upper joint has a first step matched with the inner wall of the head of the elastic net cylinder; the lower joint has a third step matched with the inner wall of the tail of the elastic net cylinder. Therefore, the structure is simple, the processing is convenient, and the strength of the joint of the obtained supporting structure is high.
  • the upper joint further has a second step that is matched with the inner wall of the head of the filter structure; the outer wall of the lower joint is matched with the inner wall of the tail of the filter structure.
  • the upper joint is welded or bonded to the elastic net cylinder; the lower joint is welded or bonded to the elastic net cylinder.
  • the structure is simple, the butt joint is easily connected and the strength is high.
  • the mating width of the first step and the third step and the elastic net cylinder is 5-15 mm. Therefore, the strength of the butt joint is high.
  • the elastic net cylinder is formed by winding a strip-shaped roll material, the roll material has a porous structure, and the seam formed after the roll material is wound is not parallel to the central axis of the elastic net cylinder. Therefore, under the premise of ensuring the elasticity of the elastic net cylinder, the strength of the elastic net cylinder is further improved.
  • center line of the coil is wound into a spiral shape.
  • the helix is a cylindrical helix; the helix angle ⁇ of the helix is 50-75°.
  • the two long sides of the coil are wound and formed by contact welding or adhesive tape.
  • the sealing structure provided by the present invention is as follows:
  • a sealing structure of a filter device includes a filter element, the filter element includes a filter structure and a support structure supporting the filter structure, the inner side of the filter element is a clean air cavity or a clean liquid cavity; the support structure is located in the filter The inside of the structure; the sealing structure includes an upper joint connected with the filter structure and the head of the support structure and a lower joint connected with the tail of the filter structure and the support structure; the upper joint has a connection with the inside of the filter element The opening of the support structure, a first step matched with the inner wall of the support structure, and a second step matched with the inner wall of the filter structure; the lower joint is closed and includes a third step matched with the inner wall of the support structure, the filter structure The inner wall of the joint is matched with the outer wall of the lower joint.
  • the head and tail adopt different sealing structures, which are simple in structure and good in sealing effect, which can significantly reduce the filtration pressure and the pressure of back blow cleaning.
  • the upper joint is welded or bonded to the filter structure and the support structure; the lower joint is welded or bonded to the filter structure and the support structure. Therefore, the sealing effect is good and the processing is convenient.
  • the mating width of the first step and the third step with the supporting structure is 5-15 mm; the mating width of the second step and the outer wall of the lower joint with the filtering structure is 15-25 mm. Therefore, the sealing effect is good.
  • the filter structure also includes an upper orifice plate connected to the upper joint and a lower orifice plate connected to the lower joint, and a raw gas cavity or a raw liquid cavity is formed between the upper orifice plate and the lower orifice plate.
  • the material to be filtered in the original air cavity or the original liquid cavity is filtered by the filter structure and then enters the clean air cavity or the clean liquid cavity, and then is discharged through the opening of the upper joint. Therefore, the structure is simple, and external filtration is realized.
  • the supporting structure includes an elastic net tube with a porosity of 70-90% and a thickness of 0.4-0.8 mm, and a rigid skeleton supporting the elastic net tube.
  • the supporting effect is good.
  • the rigid skeleton is arranged in the elastic net cylinder.
  • the support ring is distributed at an interval of 150-200mm; the ring body diameter of the support ring is 3-5mm.
  • the support structure includes a support cylinder wound from a strip-shaped coil, the coil has a porous structure, and the seam formed after the coil is wound is not connected to the central axis of the support cylinder. parallel.
  • the supporting effect is good.
  • the filter structure includes a membrane tube wound from a belt-shaped porous filter material, and the joint formed by the porous filter material is not parallel to the central axis of the membrane tube.
  • the strength of the filtering structure is high.
  • the filter structure and the method for preparing the filter structure provided by the present invention are as follows:
  • a filter structure comprising a membrane tube wound from a belt-shaped porous filter material, and the joint formed by the porous filter material after winding is not parallel to the central axis of the membrane tube.
  • the filter structure When the filter structure is subjected to internal and external pressure, its maximum principal stress is perpendicular to its central axis and acts on each circular section; the traditional straight-slit filter structure (that is, the seam is parallel to the central axis of the filter structure), the seam will be directly Withstand the greatest principal stress and require higher weld strength.
  • the stress that the seam mainly bears is the component of the main stress, that is, the radial stress and the axial stress. Therefore, under the same working pressure and the same pipe diameter, the thickness of the filter structure of the present invention can be significantly reduced, and the porosity can be significantly increased, thereby increasing the effective filtering area, improving the back blow cleaning effect and filtering efficiency.
  • the porous filter material is mainly composed of powder sintered metal porous material. Therefore, the porous filter material made of metal is more convenient for spiral forming.
  • porous filter material is a foldable flexible metal film with a thickness of ⁇ 1500 microns. This facilitates spiral forming.
  • the center line of the porous filter material is wound into a spiral shape.
  • the spiral forming film tube has better stiffness, which can significantly reduce the stress on the joints.
  • the spiral forming film tube is more conducive to ensuring its roundness, straightness and other geometric tolerance dimensions, and is conducive to improving the strength of the filter structure.
  • the coil is rectangular.
  • the coil is a regular rectangle, it can be ensured that the joint has a regular shape, and when the center line of the coil is wound into a spiral shape, the seam is also a spiral shape, thereby facilitating the control of the stability of the helix angle , Improve the surface flatness of the support tube.
  • the spiral line is a cylindrical spiral line; therefore, the diameter of the membrane cylinder is the same everywhere, which facilitates the control of the filtration process.
  • the helix angle ⁇ of the helix is 50-75°.
  • the larger the helix angle the narrower the bandwidth of the porous filter material required, and the combined stress on the connection will decrease, but the length of the membrane tube with the same length will increase and the production efficiency will decrease; when the spiral is Cylindrical spiral line; when the helix angle ⁇ of the spiral line is 50-75°, the composite stress borne by the joint is 60-85% of the principal stress of the straight-slit film tube, and high production efficiency can be maintained.
  • the two long sides of the porous filter material do not overlap after being wound, and the spacing is 1-3 mm. Because the porous filter material is very thin, if the long sides are contacted and welded, it is easy to cause the two long sides to overlap when they are wound. If the two long sides of the porous filter material overlap when they are wound, the final membrane will be caused. The diameter of the cylinder is getting larger and larger, and it is not easy to seal and fix the two ends. If the winding time distance between the two long sides of the porous filter material is too large, the filter area will be excessively reduced and the filter efficiency will be affected.
  • the butt joint of the two long sides of the porous filter material is provided with a welding rod connecting the two long sides; after winding, the welding rod is located inside the membrane tube.
  • the porous filter material is very thin, it is difficult to maintain the cylindrical shape if it is formed directly along the spiral itself. Therefore, when the welding rod is installed, it can be directly spirally formed without using a spirally formed abrasive tool, which saves process.
  • the welding rod can be evenly distributed in the inside of the film tube after spiral forming, which can effectively support the film tube and prevent the film tube from deforming. Therefore, the film tube spirally formed with the welding rod can be used directly as a filter element instead of in the film tube.
  • the internal or external support structure is set, on the one hand, the weight of the filter element is significantly reduced, and on the other hand, the filter area of the membrane cartridge is retained to the maximum.
  • the welding rod When the welding rod is arranged inside the film tube, the welding rod will not hinder the butt joint of the two long sides during the winding process.
  • the contact width between the welding rod and each long side of the porous filter material is 3-6 mm. Therefore, the bonding force is strong, the strength is high, the shape stability of the obtained membrane cylinder is good, and the influence of the welding rod on the filtering area is small.
  • the butt joint of the two long sides is provided with an adhesive tape or welding rod connecting the two long sides; after winding, the adhesive tape or welding rod is located outside the film tube.
  • welding rods or adhesive tapes can also be used to fix the two long sides at one time outside the film tube after winding.
  • an adhesive tape it is better to provide any of the above-mentioned support structures in the film tube for support during use.
  • the contact width between the tape and each long side of the porous filter material is 5-9 mm. Therefore, the bonding force is strong and the strength is high.
  • the preparation method of the filter structure includes winding the porous filter material into a film tube, and the joint formed after the porous filter material is wound is not parallel to the central axis of the film tube.
  • it also includes welding a welding rod on the inner side of one long side of the porous filter material before winding, and welding and fixing it after winding along the porous filter material itself to obtain a membrane tube.
  • the winding means that the porous filter material is wound around the outer wall of the cylindrical support and fixed by adhesive tape or welding with welding rods, and the membrane cylinder is obtained after the cylindrical support is removed.
  • the welding is resistance welding. Therefore, it is easy to process and has high strength.
  • the first filter element provided by the present invention is as follows:
  • the filter element includes a filter structure and a support structure for supporting the filter structure.
  • the filter structure includes a membrane tube wound by a band-shaped porous filter material.
  • the central axis of the film tube is parallel;
  • the support structure includes a support tube wound from a strip-shaped coil, the coil has a porous structure, and the seam formed after the coil is wound is not connected to the The central axis of the support tube is parallel.
  • center line of the porous filter material is wound into a spiral shape; the center line of the coil is wound into a spiral shape.
  • spiral line is a cylindrical spiral line.
  • the helix angle ⁇ of the helix is 50-75°.
  • the two long sides of the coil are wound and formed by contact welding or adhesive tape.
  • the two long sides of the porous filter material do not overlap after being wound, and the spacing is 1-3 mm.
  • the butt joint of the two long sides of the porous filter material is provided with a welding rod connecting the two long sides; after winding, the welding rod is located inside the membrane tube.
  • the contact width between the welding rod and each long side of the porous filter material is 3-6 mm.
  • the butt joint of the two long sides is provided with an adhesive tape or welding rod connecting the two long sides; after winding, the adhesive tape or welding rod is located outside the film tube.
  • the second filter element provided by the present invention is as follows:
  • the filter element includes a filter structure and a support structure for supporting the filter structure.
  • the filter structure includes a membrane tube wound by a band-shaped porous filter material. The central axis of the membrane tube is parallel;
  • the support structure includes a rigid frame, the rigid frame includes a support ring whose outer diameter matches the inner diameter of the filter structure, and at least two support rods that match the length of the filter structure and are connected to the support ring .
  • porous filter material is a foldable flexible metal film with a thickness of ⁇ 1500 microns.
  • center line of the porous filter material is wound into a spiral shape.
  • the porous filter material is rectangular; the spiral is a cylindrical spiral; the spiral angle ⁇ of the spiral is 50-75°.
  • the two long sides of the porous filter material do not overlap after being wound, and the spacing is 1-3 mm.
  • the butt joint of the two long sides of the porous filter material is provided with a welding rod connecting the two long sides; after winding, the welding rod is located inside the film tube.
  • the contact width between the welding rod and each long side of the porous filter material is 3-6 mm.
  • the butt joint of the two long sides is provided with an adhesive tape or welding rod connecting the two long sides; after winding, the adhesive tape or welding rod is located outside the film tube.
  • the support rod is connected to the inner wall of the support ring.
  • the support rings are distributed at an interval of 150-200mm; the ring body diameter of the support ring is 3-5mm; the support rods are at least three and are distributed at equal intervals; the support rods are cylindrical.
  • the third filter element provided by the present invention is as follows:
  • the filter element includes a filter structure and a support structure for supporting the filter structure.
  • the filter structure includes a membrane tube wound by a band-shaped porous filter material. The central axis of the film tube is parallel; the support structure includes an elastic net tube and a rigid skeleton supporting the elastic net tube.
  • porous filter material is a foldable flexible metal film with a thickness of ⁇ 1500 microns.
  • center line of the porous filter material is wound into a spiral shape.
  • the porous filter material is rectangular; the spiral is a cylindrical spiral; the spiral angle ⁇ of the spiral is 50-75°.
  • the two long sides of the porous filter material do not overlap after being wound, and the spacing is 1-3 mm.
  • the butt joint of the two long sides of the porous filter material is provided with a welding rod connecting the two long sides; after winding, the welding rod is located inside the membrane tube.
  • the contact width between the welding rod and each long side of the porous filter material is 3-6 mm.
  • the porosity of the elastic mesh cylinder is 70-90%, and the thickness is 0.4-0.8 mm.
  • the rigid skeleton is arranged in the elastic net cylinder.
  • the rigid skeleton includes a support ring whose outer diameter matches the inner diameter of the filter structure, and at least two support rods that match the length of the filter structure and are connected to the support ring.
  • the support rod is connected to the inner wall of the support ring.
  • Figure 1 is a schematic diagram of the structure of a film cartridge in the prior art.
  • Fig. 2 is a schematic diagram of the structure of the support of the embodiment 1-4.
  • Fig. 3 is a schematic diagram of the structure of the rigid frame of Examples 5-7.
  • Fig. 4 is a side view of Fig. 3.
  • FIG. 5 is a schematic structural diagram of the supporting structure of Embodiment 8.
  • Fig. 6 is a schematic structural view of the supporting structure of Examples 9-11.
  • Fig. 7 is a schematic structural diagram of the supporting structure of Embodiments 12-13.
  • FIG. 8 is a schematic structural diagram of the supporting structure of Embodiment 14.
  • Figure 9 is a schematic diagram of the structure of the film cartridge of Examples 15-17.
  • Fig. 10 is a side view of Fig. 9.
  • Fig. 11 is a partial enlarged view of A1 in Fig. 10.
  • FIG. 12 is a schematic diagram of the structure of the film cartridge of Example 18.
  • FIG. 12 is a schematic diagram of the structure of the film cartridge of Example 18.
  • Fig. 13 is a side view of Fig. 12.
  • Fig. 14 is a partial enlarged view of A2 in Fig. 13.
  • Example 15 is a schematic structural diagram of the filtering structure of Example 19.
  • Fig. 16 is a side view of Fig. 15.
  • Fig. 17 is a partial enlarged view of A3 in Fig. 16.
  • FIG. 18 is a schematic diagram of the structure of the filter element of Embodiment 20.
  • FIG. 19 is a schematic diagram of the structure of the filter element of Embodiment 21.
  • 21 is a schematic diagram of the structure of the filter element of Embodiment 23.
  • FIG. 22 is a schematic diagram of the structure of the filter element of Embodiment 24.
  • Fig. 23 is a partial enlarged view of B1 in Fig. 18.
  • Fig. 24 is a partial enlarged view of C1 in Fig. 18.
  • Fig. 25 is a partial enlarged view of B2 in Fig. 19.
  • Fig. 26 is a partial enlarged view of C2 in Fig. 19.
  • Fig. 27 is a partial enlarged view at B3 in Fig. 20.
  • Fig. 28 is a partial enlarged view of C3 in Fig. 20.
  • Fig. 29 is a partial enlarged view of B4 in Fig. 21.
  • Fig. 30 is a partial enlarged view of C4 in Fig. 21.
  • Fig. 31 is a partial enlarged view of B5 in Fig. 22.
  • Fig. 32 is a partial enlarged view of C5 in Fig. 22.
  • the marks in the figure are: coil 11, support cylinder 1, rigid frame 2, support ring 21, support rod 22, elastic mesh cylinder 3, membrane cylinder 4, porous filter material 41, welding rod 42, adhesive tape 43, upper joint 5, A step 51, a second step 52, a lower joint 6, and a third step 61.
  • the support structure of the filter structure as shown in FIG. 2 includes a support cylinder 1 wound from a strip-shaped coil 11, the coil 11 has a porous structure, the coil 11 is rectangular, and the coil The centerline of 11 is wound into a cylindrical spiral shape.
  • the thickness of the coil 11 is 0.6 mm, and the porosity is 50%.
  • the helix angle ⁇ of the helix is 75°.
  • the two long sides of the coil 11 are wound and formed by contact welding, and the welding width is 3 mm.
  • the required width of the coil 11 is 102.39 mm.
  • the support structure of the filter structure as shown in FIG. 2 includes a support cylinder 1 wound from a strip-shaped coil 11, the coil 11 has a porous structure, the coil 11 is rectangular, and the coil The centerline of 11 is wound into a cylindrical spiral shape.
  • the thickness of the coil 11 is 0.8 mm, and the porosity is 70%.
  • the helix angle ⁇ of the helix is 60°.
  • the two long sides of the coil 11 are wound and formed by contact welding, and the welding width is 3 mm.
  • the required width of the coil 11 is 197.82 mm.
  • the support structure of the filter structure as shown in FIG. 2 includes a support cylinder 1 wound from a strip-shaped coil 11, the coil 11 has a porous structure, the coil 11 is rectangular, and the coil The centerline of 11 is wound into a cylindrical spiral shape.
  • the thickness of the coil 11 is 1 mm, and the porosity is 80%.
  • the helix angle ⁇ of the helix is 50°.
  • the two long sides of the coil 11 are wound and formed by contact welding, and the welding width is 3 mm.
  • the required width of the coil 11 is 254.31 mm.
  • the support structure of the filter structure as shown in FIG. 2 includes a support cylinder 1 wound from a strip-shaped coil 11, the coil 11 has a porous structure, the coil 11 is rectangular, and the coil The centerline of 11 is wound into a cylindrical spiral shape.
  • the thickness of the coil 11 is 0.8 mm, and the porosity is 70%.
  • the helix angle ⁇ of the helix is 60°.
  • the two long sides of the coil 11 are wound by adhesive tape. When the helix angle ⁇ is 60° and the median diameter of the support cylinder 1 is 126 mm, the required width of the coil 11 is 197.82 mm.
  • the support structure of the filter structure shown in Figures 3-4 includes a rigid frame 2, which includes a support ring 21 whose outer diameter matches the inner diameter of the filter structure, matches the length of the filter structure and is connected to the support ring 21 At least two support rods 22; the support rod 22 is connected to the inner wall of the support ring 21.
  • the supporting rings 21 are distributed at an interval of 150 mm.
  • the diameter of the ring body of the support ring 21 is 3 mm.
  • the supporting rods 22 are distributed at an interval of 20 mm.
  • the support rod 22 is cylindrical and has a diameter of 4 mm.
  • the support structure of the filter structure shown in Figures 3-4 includes a rigid frame 2, which includes a support ring 21 whose outer diameter matches the inner diameter of the filter structure, matches the length of the filter structure and is connected to the support ring 21 At least two support rods 22; the support rod 22 is connected to the inner wall of the support ring 21.
  • the supporting rings 21 are distributed at a distance of 170 mm.
  • the diameter of the ring body of the support ring 21 is 4 mm.
  • the supporting rods 22 are distributed at an interval of 25 mm.
  • the support rod 22 is cylindrical and has a diameter of 4 mm.
  • the support structure of the filter structure shown in Figures 3-4 includes a rigid frame 2, which includes a support ring 21 whose outer diameter matches the inner diameter of the filter structure, matches the length of the filter structure and is connected to the support ring 21 At least two support rods 22; the support rod 22 is connected to the inner wall of the support ring 21.
  • the supporting rings 21 are distributed at an interval of 200 mm.
  • the diameter of the ring body of the support ring 21 is 5 mm.
  • the supporting rods 22 are distributed at an interval of 30 mm.
  • the support rod 22 is cylindrical and has a diameter of 4 mm.
  • the support structure of the filter structure as shown in FIG. 5 includes a rigid frame 2, which includes a support ring 21 whose outer diameter matches the inner diameter of the filter structure, and at least one that matches the length of the filter structure and is connected to the support ring 21.
  • the supporting rings 21 are distributed at an interval of 200 mm.
  • the diameter of the ring body of the support ring 21 is 5 mm.
  • the supporting rods 22 are distributed at an interval of 30 mm.
  • the support rod 22 is cylindrical and has a diameter of 4 mm.
  • the supporting structure further includes a supporting drum 1 arranged outside the rigid frame 2, and the supporting drum 1 is formed by winding a strip-shaped coil 11, the coil 11 having a porous structure, and the coil 11
  • the center line of the coil is in the shape of a cylindrical spiral.
  • the coil 11 has a thickness of 0.6 mm, a porosity of 50%, and a width of 102.39 mm.
  • the helix angle ⁇ of the helix is 75°.
  • the coil 11 is rectangular, and the two long sides of the coil 11 are wound and formed by contact welding, and the welding width is 3 mm.
  • the support structure of the filter structure as shown in FIG. 6 includes a rigid support layer and an elastic support layer.
  • the rigid support layer is arranged inside the elastic support layer; the support structure is arranged inside the filter structure.
  • the elastic support layer includes an elastic net cylinder 3 with a porosity of 70% and a thickness of 0.4 mm; the elastic net cylinder 3 is a net cylinder made of woven mesh.
  • the rigid support layer includes a rigid frame 2, which includes a support ring 21 whose outer diameter matches the inner diameter of the filter structure, and at least two support rods 22 that match the length of the filter structure and are connected to the support ring 21;
  • the support rod 22 is connected to the inner wall of the support ring 21.
  • the supporting rings 21 are distributed at an interval of 200 mm.
  • the diameter of the ring body of the support ring 21 is 5 mm.
  • the supporting rods 22 are distributed at an interval of 30 mm.
  • the support rod 22 is cylindrical and has a diameter of 4 mm.
  • the support structure of the filter structure as shown in FIG. 6 includes a rigid support layer and an elastic support layer.
  • the rigid support layer is arranged inside the elastic support layer; the support structure is arranged inside the filter structure.
  • the elastic support layer includes an elastic net cylinder 3 with a porosity of 80% and a thickness of 0.6 mm; the elastic net cylinder 3 is a net cylinder made of cut-and-drawn mesh.
  • the rigid support layer includes a rigid frame 2, which includes a support ring 21 whose outer diameter matches the inner diameter of the filter structure, and at least two support rods 22 that match the length of the filter structure and are connected to the support ring 21;
  • the support rod 22 is connected to the inner wall of the support ring 21.
  • the supporting rings 21 are distributed at an interval of 200 mm.
  • the diameter of the ring body of the support ring 21 is 5 mm.
  • the supporting rods 22 are distributed at an interval of 30 mm.
  • the support rod 22 is cylindrical and has a diameter of 4 mm.
  • the support structure of the filter structure as shown in FIG. 6 includes a rigid support layer and an elastic support layer.
  • the rigid support layer is arranged inside the elastic support layer; the support structure is arranged inside the filter structure.
  • the elastic support layer includes an elastic mesh cylinder 3 with a porosity of 90% and a thickness of 0.8 mm; the elastic mesh cylinder 3 is a mesh cylinder made of woven mesh.
  • the rigid support layer includes a rigid frame 2, which includes a support ring 21 whose outer diameter matches the inner diameter of the filter structure, and at least two support rods 22 that match the length of the filter structure and are connected to the support ring 21;
  • the support rod 22 is connected to the inner wall of the support ring 21.
  • the supporting rings 21 are distributed at an interval of 200 mm.
  • the diameter of the ring body of the support ring 21 is 5 mm.
  • the supporting rods 22 are distributed at an interval of 30 mm.
  • the support rod 22 is cylindrical and has a diameter of 4 mm.
  • the support structure of the filter structure as shown in FIG. 7 includes an elastic mesh cylinder 3 with a porosity of 80% and a thickness of 0.6, an upper joint connected to the head of the elastic mesh cylinder 3, and a tail of the elastic mesh cylinder 3 Connect the lower connector.
  • the upper joint 5 has a first step 51 that is matched with the inner wall of the head of the elastic mesh cylinder 3 and a second step 52 that is matched with the inner wall of the head of the filter structure; 3 A third step 61 matched with the inner wall of the tail, and the outer wall of the lower joint 6 is matched with the inner wall of the tail of the filter structure.
  • the upper joint 5 is welded to the elastic net cylinder 3; the lower joint 6 is welded to the elastic net cylinder 3.
  • the mating width of the first step 51 and the third step 61 and the elastic net cylinder 3 is 10 mm.
  • the elastic net cylinder 3 is a net cylinder made of cut-and-drawn net.
  • the support structure of the filter structure as shown in FIG. 7 includes an elastic net tube 3 with a porosity of 90% and a thickness of 0.8, an upper joint connected to the head of the elastic net tube 3, and a tail part of the elastic net tube 3 Connect the lower connector.
  • the upper joint 5 has a first step 51 that is matched with the inner wall of the head of the elastic mesh cylinder 3 and a second step 52 that is matched with the inner wall of the head of the filter structure; 3 A third step 61 matched with the inner wall of the tail, and the outer wall of the lower joint 6 is matched with the inner wall of the tail of the filter structure.
  • the upper joint 5 is welded to the elastic net cylinder 3; the lower joint 6 is welded to the elastic net cylinder 3.
  • the mating width of the first step 51 and the third step 61 and the elastic net cylinder 3 is 10 mm.
  • the elastic net cylinder 3 is a net cylinder made of cut-and-drawn net.
  • the support structure of the filter structure shown in Figure 8 includes an elastic net tube 3 with a porosity of 70% and a thickness of 0.4, an upper joint connected to the head of the elastic net tube 3, and a tail part of the elastic net tube 3 Connect the lower connector.
  • the upper joint 5 has a first step 51 that is matched with the inner wall of the head of the elastic mesh cylinder 3 and a second step 52 that is matched with the inner wall of the head of the filter structure; 3 A third step 61 matched with the inner wall of the tail, and the outer wall of the lower joint 6 is matched with the inner wall of the tail of the filter structure.
  • the upper joint 5 is welded to the elastic net cylinder 3; the lower joint 6 is welded to the elastic net cylinder 3.
  • the mating width of the first step 51 and the third step 61 and the elastic net cylinder 3 is 10 mm.
  • the elastic net cylinder 3 is a net cylinder made of cut-and-drawn net.
  • the elastic mesh cylinder 3 is formed by winding a strip-shaped coil material 11, the coil material 11 has a porous structure, the coil material 11 is rectangular, and the center line of the coil material 11 is wound into a cylindrical spiral. shape.
  • the helix angle ⁇ of the helix is 75°.
  • the two long sides of the coil 11 are wound and formed by contact welding, and the welding width is 3 mm.
  • the helix angle ⁇ is 75° and the median diameter of the elastic mesh cylinder 3 is 126 mm, the required width of the coil 11 is 102.39 mm.
  • the filter structure includes a membrane tube 4 wound by a band-shaped porous filter material 41, the porous filter material 41 is rectangular, and the center of the porous filter material 41 The wire is wound into a cylindrical spiral shape.
  • the helix angle ⁇ of the helix is 50°.
  • the porous filter material 41 is mainly composed of powdered sintered metal porous material, and is a foldable flexible metal film with a thickness of 1500 microns. When the helix angle ⁇ is 50° and the median diameter of the membrane cylinder 4 is 135 mm, the required width of the porous filter material 41 is 272.14 mm.
  • the two long sides of the porous filter material 41 do not overlap after being wound, and the distance is 2mm.
  • the butt joint of the two long sides of the porous filter material 41 is provided with a welding rod 42 connecting the two long sides; after winding, The welding rod 42 is located inside the membrane tube 4; the contact width between the welding rod 42 and each long side of the porous filter material 41 is 12 mm.
  • the filter structure includes a membrane tube 4 wound by a band-shaped porous filter material 41, the porous filter material 41 is rectangular, and the center of the porous filter material 41 The wire is wound into a cylindrical spiral shape.
  • the helix angle ⁇ of the helix is 55°.
  • the porous filter material 41 is mainly composed of powdered sintered metal porous material, which is a flexible metal film with a thickness of 1000 microns and can be folded. When the helix angle ⁇ is 55° and the median diameter of the membrane tube 4 is 135 mm, the required width of the porous filter material 41 is 242.89 mm.
  • the two long sides of the porous filter material 41 do not overlap after being wound, and the distance is 2mm.
  • the butt joint of the two long sides of the porous filter material 41 is provided with a welding rod 42 connecting the two long sides; after winding, The welding rod 42 is located inside the membrane tube 4; the contact width between the welding rod 42 and each long side of the porous filter material 41 is 10 mm.
  • the filter structure includes a membrane tube 4 wound by a band-shaped porous filter material 41, the porous filter material 41 is rectangular, and the center of the porous filter material 41 The wire is wound into a cylindrical spiral shape.
  • the helix angle ⁇ of the helix is 60°.
  • the porous filter material 41 is mainly composed of powdered sintered metal porous material, and is a flexible metal film with a thickness of 200 microns and can be folded. When the helix angle ⁇ is 60° and the median diameter of the membrane tube 4 is 135 mm, the required width of the porous filter material 41 is 211.95 mm.
  • the two long sides of the porous filter material 41 do not overlap after being wound, and the distance is 2mm.
  • the butt joint of the two long sides of the porous filter material 41 is provided with a welding rod 42 connecting the two long sides; after winding, The welding rod 42 is located inside the membrane tube 4; the contact width between the welding rod 42 and each long side of the porous filter material 41 is 9 mm.
  • the preparation method of the film tube 4 of Examples 15-17 is: welding the electrode 42 on the inner side of one long side of the porous filter material 41 before winding, and then wind the porous filter material 41 into a cylindrical shape along itself, and then resistance welding The welding rod 42 and the other long side form the film tube 4.
  • the filter structure includes a membrane tube 4 wound by a band-shaped porous filter material 41, the porous filter material 41 is rectangular, and the center of the porous filter material 41 The wire is wound into a cylindrical spiral shape.
  • the helix angle ⁇ of the helix is 70°.
  • the porous filter material 41 is mainly composed of powdered sintered metal porous material, which is a flexible metal film with a thickness of 50 microns and can be folded. When the helix angle ⁇ is 70° and the median diameter of the membrane cylinder 4 is 135 mm, the required width of the porous filter material 41 is 144.97 mm.
  • the two long sides of the porous filter material 41 do not overlap after being wound, and the distance is 2mm.
  • the butt joint of the two long sides of the porous filter material 41 is provided with a welding rod 42 connecting the two long sides; after winding, The welding rod 42 is located outside the filter structure; the contact width between the welding rod 42 and each long side of the porous filter material 41 is 8 mm.
  • the preparation method of the film tube 4 of Example 18 is: winding the porous filter material 41 along the outer wall of the cylindrical support into a tube shape, after winding, the two long sides are fixed by resistance welding with an electrode 42, and the cylindrical support is removed. The film tube 4 is obtained.
  • the filter structure includes a membrane tube 4 wound by a band-shaped porous filter material 41, the porous filter material 41 is rectangular, and the center of the porous filter material 41 The wire is wound into a cylindrical spiral shape.
  • the helix angle ⁇ of the helix is 75°.
  • the porous filter material 41 is mainly composed of powdered sintered metal porous material, and is a flexible metal film with a thickness of 20 microns and can be folded. When the helix angle ⁇ is 75° and the median diameter of the membrane tube 4 is 135 mm, the required width of the porous filter material 41 is 109.79 mm.
  • the two long sides of the porous filter material 41 do not overlap after being wound, and the distance is 2mm.
  • the butt joint of the two long sides of the porous filter material 41 is provided with a tape 43 connecting the two long sides; after winding, The tape 43 is located outside the filter structure; the contact width between the tape 43 and each long side of the porous filter material 41 is 10 mm.
  • the preparation method of the film cartridge 4 of Example 19 is: the porous filter material 41 is wound along the outer wall of the cylindrical support into a cylindrical shape, and after the winding, the two long sides are bonded and fixed with the tape 43, and the cylindrical support is removed. The film tube 4 is obtained.
  • the filter element as shown in FIG. 18 includes a filter structure and a support structure supporting the filter structure, wherein the filter structure adopts the filter structure of embodiment 15 and the support structure adopts the support structure of the filter structure of embodiment 6.
  • the filter element as shown in FIG. 19 includes a filter structure and a support structure for supporting the filter structure, wherein the filter structure adopts the filter structure of Embodiment 16 and the support structure adopts the support structure of the filter structure of Embodiment 13.
  • the filter element as shown in FIG. 20 includes a filter structure and a support structure supporting the filter structure, wherein the filter structure adopts the filter structure of embodiment 17 and the support structure adopts the support structure of the filter structure of embodiment 3.
  • the filter element shown in FIG. 21 includes a filter structure and a support structure supporting the filter structure, wherein the filter structure adopts the filter structure of embodiment 18, and the support structure adopts the support structure of the filter structure of embodiment 10.
  • the filter element shown in FIG. 22 includes a filter structure and a support structure supporting the filter structure, wherein the filter structure adopts the filter structure of embodiment 19, and the support structure adopts the support structure of the filter structure of embodiment 8.
  • the filter element includes a filter structure and a support structure supporting the filter structure, wherein the filter structure adopts the filter structure of embodiment 16 and the support structure adopts the support structure of the filter structure of embodiment 12.
  • the structure of the filter device applying the filter element of one of the embodiments 20-25 is as follows: the inner side of the filter element is a clean air cavity or a clean liquid cavity; the support structure is located inside the filter structure;
  • the sealing structure includes an upper joint 5 connected with the head of the filter structure and the support structure, and a lower joint 6 connected with the tail of the filter structure and the support structure;
  • the upper joint 5 has an opening that communicates with the inside of the filter element,
  • the lower joint 6 is closed and includes a third step 61 matched with the inner wall of the support structure.
  • the inner wall of the structure is matched with the outer wall of the lower joint 6.
  • the upper joint 5 is welded to the filter structure and the support structure; the lower joint 6 is welded to the filter structure and the support structure.
  • the mating width of the first step 51 and the third step 61 with the supporting structure is 10 mm; the mating width of the second step 52 and the outer wall of the lower joint 6 with the filtering structure is 20 mm.
  • It also includes an upper orifice plate connected to the upper connector 5 and a lower orifice plate connected to the lower connector 6, and a raw gas cavity or a liquid cavity is formed between the upper orifice plate and the lower orifice plate.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)

Abstract

一种过滤结构及其制备方法以及包括该过滤结构的滤芯，包括由带状的多孔过滤材料(41)卷绕而成的膜筒(4)，多孔过滤材料(41)卷绕后形成的接缝不与膜筒(4)的中心轴平行。

Description

过滤结构、过滤结构的制备方法以及滤芯 技术领域
本发明涉及过滤装置的技术领域，具体而言，涉及过滤结构的支撑结构以及滤芯。
背景技术
本申请的申请人日前提交了公开号分别为CN104874798A(名称为多孔薄膜及多孔薄膜的制备方法)、CN104874801A(名称为多孔薄膜及多孔薄膜的制备方法)、CN104959612A(名称为一种多孔薄膜及多孔薄膜的制备方法)、CN104959611A(名称为多孔薄膜及多孔薄膜的制备方法)的专利申请，公开了一种厚度≤1500微米的且可折叠的柔性金属薄膜，更为优选是当厚度≤200微米容易达到较高的透气性能。目前该柔性金属薄膜的应用主要是应用于陶瓷工业、冶金、煤化工、火力发电等高温高压及强腐蚀性等恶劣环境中的气固、液固过滤分离的滤芯。
如图1所示，现有的以柔性金属膜为过滤材料的柔性袋式滤芯通常是按照膜筒的直径和长度来裁切柔性金属膜并焊接制作成膜筒，再在袋内配用专用的支撑结构、在两端配以密封结构进行使用。该类滤芯滤材适用温度范围较广，气通量较大，但仍存在以下问题：
(1)支撑结构大多采用冲孔板搭边直缝焊接或管材直接开孔制作，由于支撑结构行为尺寸保证能力较差，需增加其壁厚来满足工况压差要求，通过厚度在1.2mm以上，导致滤芯重量显著提升；同时，支撑结构的孔隙率大多为40-60％，显著降低了膜筒的有效过滤面积；
(2)膜筒采用直缝焊接结构，在承受外压时，直缝结构的受压能力差，因此只能在较低工况压差下使用；
(3)在使用过程中支撑结构会与膜筒发生摩擦导致滤芯失效，影响滤芯可靠性；同时内部支撑结构会降低滤芯有效过滤面积，导致滤芯阻力增大，提供运行成本；
(4)滤芯的密封结构差或密封效果好但结构复杂，导致过滤压力显著提升且造价高。
发明内容
本发明一方面的目的在于提供支撑结构，以解决现有技术中支撑结构强度差和较厚的问题。本发明另一方面的目的在于提供过滤结构以及过滤结构的制备方法，以解决现有技术中过滤结构强度差的问题。本发明再一方面的目的在于提供滤芯，以解决现有技术中滤芯强度差和有效过滤面积小的问题。本发明又一方面的目的在于提供密封结构，以解决现有技术密封结构差或密封效果好但结构复杂的问题。
为了实现上述目的，本发明提供的第一种支撑结构如下：
过滤结构的支撑结构，所述支撑结构包括由带状的卷材卷绕而成的支撑筒，所述卷材具有多孔结构，所述卷材卷绕后形成的接缝不与所述支撑筒的中心轴平行。
支撑筒在承受内、外压时，其最大主应力垂直于其中心轴且作用于每个圆截面；传统的直缝焊管(即接缝与焊管中心轴平行)，接缝处会直接承受最大的主应力，对焊缝强度要求较高。当接缝不与所述支撑筒的中心轴平行时，接缝处主要承受的应力为主应力的分力，即径向应力和轴向应力，两种应力值明显小于直缝焊管的主应力，因此，在相同工作压力和同一管径下，本发明的支撑结构厚度可以显著降低，且孔隙度可以显著提升，从而提升过滤结构的有效过滤面积，提升反吹清灰效果和过滤效率。
进一步地，所述卷材的中心线卷绕后呈螺旋线形状。在材质相同条件下，螺旋成型支撑结构的刚度更优，能够明显降低接缝处所承受的应力。同时，相比直缝成型工艺，螺旋成型支撑结构更利于保证其圆度、直线度等形位公差尺寸，利于提升支撑结构的强度。
进一步地，所述卷材为长方形。当卷材为规则的长方形时，可以确保连接处形状规则，且当所述卷材的中心线卷绕后呈螺旋线形状时，接缝也呈螺旋线形状，由此便于控制螺旋角的稳定，提升支撑筒的表面平整性。
进一步地，所述螺旋线为圆柱螺旋线；圆柱螺旋线的径向投影为圆形。由此，支撑筒形状各处一致，支撑效果更好。
进一步地，所述螺旋线的螺旋角α为50-75°。在支撑筒直径相同的情况下，螺旋角越大，所需卷材带宽越窄，连接处承受分应力会下降，但相同长度支撑结构对接长度增加，生产效率降低；当所述螺旋线为圆柱螺旋线；所述螺旋线的螺旋角α为50-75°时，连接处承受的合成应力是直缝焊管主应力的60-85％，且能够保持较高的生产效率。螺旋角α计算公式：cosα＝B/(π×D)，其中B为卷材宽度，D为支撑筒中径，D＝支撑筒的外径-支撑筒壁厚，或＝支撑筒的内径+支撑筒壁厚；下述过滤结构的螺旋角计算公式中，将支撑筒替换为膜筒、卷材替换为多孔过滤材料即可。
进一步地，所述卷材的两个长边卷绕后接触焊接成型或采用胶带粘接。由此，连接处的结合力强且生产效率高。当采用接触焊接成型时，优选采用氩弧焊，便于加工且强度高。
进一步地，焊接的宽度为2-4mm。由此，确保较强的结合力，也避免了焊缝过宽而影响过滤面积。
进一步地，所述卷材的孔隙率为50-80％。当卷材的孔隙率高于上述数值范围时，强度较低。当卷材的孔隙率低于上述数值范围时，会降低有效过滤面积。由此，当所述卷材 的孔隙率为50-80％时，可以确保较高的有效过滤面积和强度。
进一步地，所述卷材的厚度为0.6-1mm。当卷材的厚度高于上述数值范围时，不利于螺旋成型；当卷材的厚度低于上述数值范围时，强度较低。由此，当所述卷材的厚度为0.6-1mm时，可以确保较高的成型效果和强度。
滤芯，包括过滤结构和支撑结构，所述支撑结构为上述的过滤结构的支撑结构。
进一步地，所述支撑结构位于所述过滤结构的内侧；所述过滤结构为柔性金属薄膜卷绕而成的膜筒。所述柔性金属薄膜指背景技术中的任一种多孔薄膜。由此，更好的支撑过滤结构，形成高强度的外滤式过滤装置。
为了实现上述目的，本发明提供的第二种支撑结构如下：
过滤结构的支撑结构，所述支撑结构包括刚性骨架，所述刚性骨架包括外径与过滤结构内径匹配的支撑环、与过滤结构长度匹配且与所述支撑环连接的至少两个支撑杆；所述支撑杆与所述支撑环的内壁连接。
相比于传统结构的多孔管式支撑结构，刚性骨架可以在确保较好的支撑效果的前提下最大程度保证较高的有效过滤面积。本发明的刚性骨架中提出将所述支撑杆与所述支撑环的内壁连接，这样设置的支撑环可以改善支撑结构长径比，使其受力状态由长圆筒变为短圆筒，改善支撑结构刚度；采用本发明的刚性骨架的支撑结构在相同工况下的刚度更优，耐负压更好，可以降低支撑结构与过滤结构的接触面积，从而提升有效过滤面积，提升反吹清灰效果和过滤效率。支撑杆可以对过滤结构产生二次支撑。
进一步地，所述支撑环按照150-200mm的间距分布。由此，确保较好的支撑效果。
进一步地，所述支撑环的环体直径为3-5mm。由此，一来确保较宽的气体流动通道，二来确保较好的强度，从而产生较好的支撑效果。
进一步地，所述支撑杆为至少三个且呈等间距分布。由此，确保较好的支撑效果。
进一步地，所述支撑杆按照20-30mm的间距分布。由此，确保较好的支撑效果。
进一步地，所述支撑杆为圆柱形。由此，确保较好的支撑效果，防止因机械磨损而损坏过滤结构。
进一步地，所述支撑杆的直径为3-5mm。由此，确保较好的支撑效果
进一步地，所述支撑结构还包括设于所述刚性骨架外部的支撑筒，所述支撑筒由带状的卷材卷绕而成，所述卷材具有多孔结构，所述卷材卷绕后形成的接缝不与所述支撑筒的中心轴平行。由此，进一步提升支撑结构的强度，确保更好的支撑效果，适用于更高压差工况。
进一步地，所述卷材的厚度为0.6-1mm；所述卷材的孔隙率为50-80％。
进一步地，所述支撑结构位于所述过滤结构的内侧；所述过滤结构为柔性金属薄膜卷绕而成的膜筒。
为了实现上述目的，本发明提供的第三种支撑结构如下：
过滤结构的支撑结构，包括：刚性支撑层和弹性支撑层，所述刚性支撑层设于所述弹性支撑层的内部；所述支撑结构设于过滤结构的内部。
在过滤及反吹过程中，弹性支撑层可向内、外部发生弹性形变，从而在过滤及反吹状态下均对过滤结构起到很好支撑作用；同时，由于弹性支撑层可向内形变，可以有效的增加过滤结构由过滤到反吹时的形变量，从而实现反吹时对过滤结构表面粉尘抖动，有利于反吹时过滤结构表面粉尘剥离。刚性骨架对过滤结构产生二次支撑，确保过滤结构强度和刚度可靠，同时最大程度保证较高的有效过滤面积。
进一步地，所述弹性支撑层包括孔隙率为70-90％、厚度为0.4-0.8mm的弹性网筒。由此，确保较高的过滤面积和适宜的弹性。
进一步地，所述弹性网筒为切拉网或编织网制成的网筒。切拉网是指钢板经冲孔和拉伸之后得到的金属网，相比于传统的编织网，切拉网的节点强度更高，弹性更好，有助于提升支撑结构强度。编织网是指由金属丝编织而成的金属网，由于金属丝相互交织，使得编织网的开孔直径可明显小于切拉网，并且当采用较细的金属丝编织而成的金属网时，可以获得更轻薄的弹性网筒。
进一步地，所述刚性支撑层还包括刚性骨架，所述刚性骨架包括外径与过滤结构内径匹配的支撑环、与过滤结构长度匹配且与所述支撑环连接的至少两个支撑杆。由于弹性网筒很薄且孔隙率很高，通过设置刚性骨架，可以提升支撑效果，具有复合结构的支撑结构，其重量和支撑效果仍明显优于现有的多孔管支撑结构。
进一步地，所述支撑杆与所述支撑环的内壁连接。
进一步地，所述支撑环按照150-200mm的间距分布；所述支撑环的环体直径为3-5mm。
进一步地，所述支撑杆为至少三个且呈等间距分布。
进一步地，所述支撑杆按照20-30mm的间距分布。
进一步地，所述支撑杆为圆柱形。
进一步地，所述支撑杆的直径为3-5mm。
为了实现上述目的，本发明提供的第四种支撑结构如下：
过滤结构的支撑结构，包括弹性网筒、与所述弹性网筒头部连接的上接头以及与所述 弹性网筒尾部连接的下接头。
当弹性网筒被限定于上接头和下接头之间时，可以在过滤和反吹过程中产生一定的弹性变形。在过滤过程中，弹性支撑层可向内部发生弹性形变，从而降低对过滤结构过滤面的影响。在反吹过程中，弹性支撑层可以向外发生弹性形变，从而更好地支撑过滤结构，有利于反吹时滤芯表面粉尘剥离。
进一步地，所述弹性网筒的孔隙率为70-90％、厚度为0.4-0.8mm。由此，确保较高的过滤面积和适宜的弹性。
进一步地，所述弹性网筒为切拉网或编织网制成的网筒。
进一步地，所述上接头具有与所述弹性网筒头部内壁配合的第一台阶；所述下接头具有与所述弹性网筒尾部内壁配合的第三台阶。由此，结构简单，便于加工，且所得支撑结构对接处强度高。
进一步地，所述上接头还具有与所述过滤结构头部内壁配合的第二台阶；所述下接头的外壁与所述过滤结构尾部的内壁配合。由此，便于与过滤结构连接。
进一步地，所述上接头与所述弹性网筒焊接或粘接；所述下接头与所述弹性网筒焊接或粘接。由此，结构简单，对接处容易连接且强度高。
进一步地，所述第一台阶和第三台阶与所述弹性网筒的配合宽度为5-15mm。由此，对接处强度高。
进一步地，所述弹性网筒由带状的卷材卷绕而成，所述卷材具有多孔结构，所述卷材卷绕后形成的接缝不与所述弹性网筒的中心轴平行。由此，在确保弹性网筒的弹性前提下，进一步提升弹性网筒的强度。
进一步地，所述卷材的中心线卷绕后呈螺旋线形状。
进一步地，所述螺旋线为圆柱螺旋线；所述螺旋线的螺旋角α为50-75°。
进一步地，所述卷材的两个长边卷绕后接触焊接成型或采用胶带粘接。
为了实现上述目的，本发明提供的密封结构如下：
过滤装置的密封结构，所述过滤装置包括滤芯，所述滤芯包括过滤结构和支撑所述过滤结构的支撑结构，所述滤芯内侧为净气腔或净液腔；所述支撑结构位于所述过滤结构的内部；所述密封结构包括与所述过滤结构和支撑结构的头部连接的上接头以及与所述过滤结构和支撑结构的尾部连接的下接头；所述上接头具有与滤芯内部导通的开口、与所述支撑结构内壁配合的第一台阶以及与所述过滤结构内壁配合的第二台阶；所述下接头封闭，包括与所述支撑结构内壁配合的第三台阶，所述过滤结构的内壁与所述下接头外壁配合。
头部和尾部采用不同的密封结构，结构简单，且密封效果好，可以显著降低过滤压力和反吹清灰压力。
进一步地，所述上接头与所述过滤结构和支撑结构焊接或粘接；所述下接头与所述过滤结构和支撑结构焊接或粘接。由此，密封效果好且便于加工。
进一步地，所述第一台阶和第三台阶与所述支撑结构的配合宽度为5-15mm；所述第二台阶和所述下接头外壁与所述过滤结构的配合宽度为15-25mm。由此，密封效果好。
进一步地，还包括与所述上接头连接的上孔板以及与所述下接头连接的下孔板，所述上孔板与所述下孔板之间形成原气腔或原液腔。原气腔或原液腔中的待过滤物经过滤结构过滤后进入净气腔或净液腔，然后经上接头的开口排出。由此，结构简单，实现外滤。
进一步地，所述支撑结构包括孔隙率为70-90％、厚度为0.4-0.8mm的弹性网筒以及支撑所述弹性网筒的刚性骨架。由此，支撑效果好。
进一步地，所述刚性骨架设于所述弹性网筒内。
进一步地，所述支撑环按照150-200mm的间距分布；所述支撑环的环体直径为3-5mm。
进一步地，所述支撑结构包括由带状的卷材卷绕而成的支撑筒，所述卷材具有多孔结构，所述卷材卷绕后形成的接缝不与所述支撑筒的中心轴平行。由此，支撑效果好。
进一步地，所述过滤结构包括由带状的多孔过滤材料卷绕而成的膜筒，所述多孔过滤材料卷绕后形成的接缝不与所述膜筒的中心轴平行。由此，过滤结构的强度高。
为了实现上述目的，本发明提供的过滤结构以及过滤结构的制备方法如下：
过滤结构，所述过滤结构包括由带状的多孔过滤材料卷绕而成的膜筒，所述多孔过滤材料卷绕后形成的接缝不与所述膜筒的中心轴平行。
过滤结构在承受内、外压时，其最大主应力垂直于其中心轴且作用于每个圆截面；传统的直缝过滤结构(即接缝与过滤结构中心轴平行)，接缝处会直接承受最大的主应力，对焊缝强度要求较高。当接缝不与所述膜筒的中心轴平行时，接缝处主要承受的应力为主应力的分力，即径向应力和轴向应力，两种应力值明显小于直缝过滤结构的主应力，因此，在相同工作压力和同一管径下，本发明的过滤结构厚度可以显著降低，且孔隙度可以显著提升，从而提升有效过滤面积，提升反吹清灰效果和过滤效率。
进一步地，所述多孔过滤材料主要由粉末烧结金属多孔材料构成。由此，金属材质的多孔过滤材料更便于螺旋成型。
进一步地，所述多孔过滤材料是一种厚度≤1500微米且可折叠的柔性金属薄膜。由此，便于螺旋成型。
进一步地，所述多孔过滤材料的中心线卷绕后呈螺旋线形状。在材质相同条件下，螺旋成型膜筒的刚度更优，能够明显降低接缝处所承受的应力。同时，相比直缝成型工艺，螺旋成型膜筒更利于保证其圆度、直线度等形位公差尺寸，利于提升过滤结构的强度。
进一步地，所述卷材为长方形。当卷材为规则的长方形时，可以确保连接处形状规则，且当所述卷材的中心线卷绕后呈螺旋线形状时，接缝也呈螺旋线形状，由此便于控制螺旋角的稳定，提升支撑筒的表面平整性。
进一步地，所述螺旋线为圆柱螺旋线；由此，膜筒的各处直径相同，便于控制过滤过程。
进一步地，所述螺旋线的螺旋角α为50-75°。在膜筒直径相同的情况下，螺旋角越大，所需多孔过滤材料带宽越窄，连接处承受合成应力会下降，但相同长度膜筒对接长度增加，生产效率降低；当所述螺旋线为圆柱螺旋线；所述螺旋线的螺旋角α为50-75°时，连接处承受的合成应力是直缝膜筒主应力的60-85％，且能够保持较高的生产效率。
进一步地，所述多孔过滤材料的两条长边卷绕后不重合，间距为1-3mm。由于多孔过滤材料非常薄，若采用长边接触焊接的方式，容易造成两条长边卷绕时发生重合，若所述多孔过滤材料的两条长边卷绕时发生重合，则会导致最终膜筒的直径越来越大，不易于两端的密封及固定。若所述多孔过滤材料的两条长边卷绕时间距过大，则会过度减小过滤面积，影响过滤效率。
进一步地，所述多孔过滤材料的两条长边的对接处设有连接两条长边的焊条；卷绕后，所述焊条位于膜筒的内侧。由于多孔过滤材料的很薄，直接沿自身螺旋成型的话，难以保持筒状。因此，当设置焊条时，可以直接螺旋成型，而不需要借助螺旋成型磨具，节约工序。并且，焊条可以在螺旋成型后均匀地分布于膜筒的内部，可以有效地支撑膜筒，防止膜筒变形，因此，使用焊条螺旋成型的膜筒可以直接作为滤芯使用，而不用再在膜筒的内部或外部设置支撑结构，一方面显著降低滤芯的重量，二来最大限度保留了膜筒的过滤面积。当焊条设置在膜筒的内侧时，在卷绕过程中焊条不会阻碍两条长边的对接。
进一步地，所述焊条与所述多孔过滤材料的每一个长边的接触宽度为3-6mm。由此，结合力强，强度高，所得膜筒的形状稳定性好，焊条对过滤面积的影响较小。
进一步地，所述两条长边的对接处设有连接两条长边的胶带或焊条；卷绕后，所述胶带或焊条位于膜筒的外侧。当借助螺旋成型模具如圆柱形支撑体时，也可以在卷绕后在膜筒外采用焊条或胶带一次性固定两个长边。其中，当采用胶带时，使用时最好在膜筒内设置上述任一种支撑结构进行支撑。
进一步地，所述胶带与所述多孔过滤材料的每一个长边的接触宽度为5-9mm。由此，结合力强，强度高。
过滤结构的制备方法，包括使多孔过滤材料卷绕成膜筒，所述多孔过滤材料卷绕后形成的接缝不与所述膜筒的中心轴平行。
进一步地，还包括在卷绕前在多孔过滤材料的一个长边的内侧焊接焊条以及在沿多孔过滤材料自身卷绕后焊接固定，即得到膜筒。
进一步地，所述卷绕为使多孔过滤材料沿圆柱形支撑体外壁卷绕后采用胶带粘接固定或焊条焊接固定，取下圆柱形支撑体后即得到膜筒。
进一步地，所述焊接为电阻焊。由此，便于加工，且强度高。
为了实现上述目的，本发明提供的第一种滤芯如下：
滤芯，包括过滤结构和支撑所述过滤结构的支撑结构，所述过滤结构包括由带状的多孔过滤材料卷绕而成的膜筒，所述多孔过滤材料卷绕后形成的接缝不与所述膜筒的中心轴平行；所述支撑结构包括由带状的卷材卷绕而成的支撑筒，所述卷材具有多孔结构，所述卷材卷绕后形成的接缝不与所述支撑筒的中心轴平行。
进一步地，所述多孔过滤材料的中心线卷绕后呈螺旋线形状；所述卷材的中心线卷绕后呈螺旋线形状。
进一步地，所述卷材为长方形；所述多孔过滤材料为长方形。
进一步地，所述螺旋线为圆柱螺旋线。
进一步地，所述螺旋线的螺旋角α为50-75°。
进一步地，所述卷材的两个长边卷绕后接触焊接成型或采用胶带粘接。
进一步地，所述多孔过滤材料的两条长边卷绕后不重合，间距为1-3mm。
进一步地，所述多孔过滤材料的两条长边的对接处设有连接两条长边的焊条；卷绕后，所述焊条位于膜筒的内侧。
进一步地，所述焊条与多孔过滤材料的每一个长边的接触宽度为3-6mm。
进一步地，所述两条长边的对接处设有连接两条长边的胶带或焊条；卷绕后，所述胶带或焊条位于膜筒的外侧。
为了实现上述目的，本发明提供的第二种滤芯如下：
滤芯，包括过滤结构和支撑所述过滤结构的支撑结构，所述过滤结构包括由带状的多孔过滤材料卷绕而成的膜筒，所述多孔过滤材料卷绕后形成的接缝不与所述膜筒的中心轴平行；所述支撑结构包括刚性骨架，所述刚性骨架包括外径与过滤结构内径匹配的支撑环、 与过滤结构长度匹配且与所述支撑环连接的至少两个支撑杆。
进一步地，所述多孔过滤材料是一种厚度≤1500微米且可折叠的柔性金属薄膜。
进一步地，所述多孔过滤材料的中心线卷绕后呈螺旋线形状。
进一步地，所述多孔过滤材料为长方形；所述螺旋线为圆柱螺旋线；所述螺旋线的螺旋角α为50-75°。
进一步地，所述多孔过滤材料的两条长边卷绕后不重合，间距为1-3mm。
进一步地，所述多孔过滤材料的两条长边的对接处设有连接两条长边的焊条；卷绕后，所述焊条位于膜筒的内侧。
进一步地，所述焊条与多孔过滤材料的每一个长边的接触宽度为3-6mm。
进一步地，所述两条长边的对接处设有连接两条长边的胶带或焊条；卷绕后，所述胶带或焊条位于膜筒的外侧。
进一步地，所述支撑杆与所述支撑环的内壁连接。
进一步地，所述支撑环按照150-200mm的间距分布；所述支撑环的环体直径为3-5mm；所述支撑杆为至少三个且呈等间距分布；所述支撑杆为圆柱形。
为了实现上述目的，本发明提供的第三种滤芯如下：
滤芯，包括过滤结构和支撑所述过滤结构的支撑结构，所述过滤结构包括由带状的多孔过滤材料卷绕而成的膜筒，所述多孔过滤材料卷绕后形成的接缝不与所述膜筒的中心轴平行；所述支撑结构包括弹性网筒以及支撑所述弹性网筒的刚性骨架。
进一步地，所述多孔过滤材料是一种厚度≤1500微米且可折叠的柔性金属薄膜。
进一步地，所述多孔过滤材料的中心线卷绕后呈螺旋线形状。
进一步地，所述多孔过滤材料为长方形；所述螺旋线为圆柱螺旋线；所述螺旋线的螺旋角α为50-75°。
进一步地，所述多孔过滤材料的两条长边卷绕后不重合，间距为1-3mm。
进一步地，所述多孔过滤材料的两条长边的对接处设有连接两条长边的焊条；卷绕后，所述焊条位于膜筒的内侧。
进一步地，所述焊条与多孔过滤材料的每一个长边的接触宽度为3-6mm。
进一步地，所述弹性网筒的孔隙率为70-90％、厚度为0.4-0.8mm。
进一步地，所述刚性骨架设于所述弹性网筒内。
进一步地，所述刚性骨架包括外径与过滤结构内径匹配的支撑环、与过滤结构长度匹配且与所述支撑环连接的至少两个支撑杆。
进一步地，所述支撑杆与所述支撑环的内壁连接。
下面结合附图和具体实施方式对本发明做进一步的说明。本发明附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
构成本发明的一部分的附图用来辅助对本发明的理解，附图中所提供的内容及其在本发明中有关的说明可用于解释本发明，但不构成对本发明的不当限定。在附图中：
图1为现有技术中膜筒的结构示意图。
图2为实施例1-4的支撑体的结构示意图。
图3为实施例5-7的刚性骨架的结构示意图。
图4为图3的侧视图。
图5为实施例8的支撑结构的结构示意图。
图6为实施例9-11的支撑结构的结构示意图。
图7为实施例12-13的支撑结构的结构示意图。
图8为实施例14的支撑结构的结构示意图。
图9为实施例15-17的膜筒的结构示意图。
图10为图9的侧视图。
图11为图10中A1处的局部放大图。
图12为实施例18的膜筒的结构示意图。
图13为图12的侧视图。
图14为图13中A2处的局部放大图。
图15为实施例19的过滤结构的结构示意图。
图16为图15的侧视图。
图17为图16中A3处的局部放大图。
图18为实施例20的滤芯的结构示意图。
图19为实施例21的滤芯的结构示意图。
图20为实施例22的滤芯的结构示意图。
图21为实施例23的滤芯的结构示意图。
图22为实施例24的滤芯的结构示意图。
图23为图18中B1处的局部放大图。
图24为图18中C1处的局部放大图。
图25为图19中B2处的局部放大图。
图26为图19中C2处的局部放大图。
图27为图20中B3处的局部放大图。
图28为图20中C3处的局部放大图。
图29为图21中B4处的局部放大图。
图30为图21中C4处的局部放大图。
图31为图22中B5处的局部放大图。
图32为图22中C5处的局部放大图。
上述附图中的有关标记为：
图中标记为：卷材11、支撑筒1、刚性骨架2、支撑环21、支撑杆22、弹性网筒3、膜筒4、多孔过滤材料41、焊条42、胶带43、上接头5、第一台阶51、第二台阶52、下接头6、第三台阶61。
具体实施方式
下面结合附图对本发明进行清楚、完整的说明。本领域普通技术人员在基于这些说明的情况下将能够实现本发明。在结合附图对本发明进行说明前，需要特别指出的是：
本发明中在包括下述说明在内的各部分中所提供的技术方案和技术特征，在不冲突的情况下，这些技术方案和技术特征可以相互组合。
此外，下述说明中涉及到的本发明的实施例通常仅是本发明一部分的实施例，而不是全部的实施例。因此，基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都应当属于本发明保护的范围。
关于本发明中术语和单位。本发明的说明书和权利要求书及有关的部分中的术语“包括”、“具有”以及它们的任何变形，意图在于覆盖不排他的包含。
实施例1
如图2所示的过滤结构的支撑结构，包括由带状的卷材11卷绕而成的支撑筒1，所述卷材11具有多孔结构，所述卷材11为长方形，所述卷材11的中心线卷绕后呈圆柱螺旋线形状。所述卷材11的厚度为0.6mm，孔隙率为50％。所述螺旋线的螺旋角α为75°。所述卷材11的两个长边卷绕后接触焊接成型，焊接的宽度为3mm。当螺旋角α为75°时、支撑筒1的中径为126mm时，所需卷材11的宽度为102.39mm。
实施例2
如图2所示的过滤结构的支撑结构，包括由带状的卷材11卷绕而成的支撑筒1，所 述卷材11具有多孔结构，所述卷材11为长方形，所述卷材11的中心线卷绕后呈圆柱螺旋线形状。所述卷材11的厚度为0.8mm，孔隙率为70％。所述螺旋线的螺旋角α为60°。所述卷材11的两个长边卷绕后接触焊接成型，焊接的宽度为3mm。当螺旋角α为60°时、支撑筒1的中径为126mm时，所需卷材11的宽度为197.82mm。
实施例3
如图2所示的过滤结构的支撑结构，包括由带状的卷材11卷绕而成的支撑筒1，所述卷材11具有多孔结构，所述卷材11为长方形，所述卷材11的中心线卷绕后呈圆柱螺旋线形状。所述卷材11的厚度为1mm，孔隙率为80％。所述螺旋线的螺旋角α为50°。所述卷材11的两个长边卷绕后接触焊接成型，焊接的宽度为3mm。当螺旋角α为50°时、支撑筒1的中径为126mm时，所需卷材11的宽度为254.31mm。
实施例4
如图2所示的过滤结构的支撑结构，包括由带状的卷材11卷绕而成的支撑筒1，所述卷材11具有多孔结构，所述卷材11为长方形，所述卷材11的中心线卷绕后呈圆柱螺旋线形状。所述卷材11的厚度为0.8mm，孔隙率为70％。所述螺旋线的螺旋角α为60°。所述卷材11的两个长边卷绕后采用胶带粘接。当螺旋角α为60°时、支撑筒1的中径为126mm时，所需卷材11的宽度为197.82mm。
实施例5
如图3-4所示的过滤结构的支撑结构，包括刚性骨架2，所述刚性骨架2包括外径与过滤结构内径匹配的支撑环21、与过滤结构长度匹配且与所述支撑环21连接的至少两个支撑杆22；所述支撑杆22与所述支撑环21的内壁连接。所述支撑环21按照150mm的间距分布。所述支撑环21的环体直径为3mm。所述支撑杆22按照20mm的间距分布。所述支撑杆22为圆柱形，直径为4mm。
实施例6
如图3-4所示的过滤结构的支撑结构，包括刚性骨架2，所述刚性骨架2包括外径与过滤结构内径匹配的支撑环21、与过滤结构长度匹配且与所述支撑环21连接的至少两个支撑杆22；所述支撑杆22与所述支撑环21的内壁连接。所述支撑环21按照170mm的间距分布。所述支撑环21的环体直径为4mm。所述支撑杆22按照25mm的间距分布。所述支撑杆22为圆柱形，直径为4mm。
实施例7
如图3-4所示的过滤结构的支撑结构，包括刚性骨架2，所述刚性骨架2包括外径与 过滤结构内径匹配的支撑环21、与过滤结构长度匹配且与所述支撑环21连接的至少两个支撑杆22；所述支撑杆22与所述支撑环21的内壁连接。所述支撑环21按照200mm的间距分布。所述支撑环21的环体直径为5mm。所述支撑杆22按照30mm的间距分布。所述支撑杆22为圆柱形，直径为4mm。
实施例8
如图5所示的过滤结构的支撑结构，包括刚性骨架2，所述刚性骨架2包括外径与过滤结构内径匹配的支撑环21、与过滤结构长度匹配且与所述支撑环21连接的至少两个支撑杆22；所述支撑杆22与所述支撑环21的内壁连接。所述支撑环21按照200mm的间距分布。所述支撑环21的环体直径为5mm。所述支撑杆22按照30mm的间距分布。所述支撑杆22为圆柱形，直径为4mm。
所述支撑结构还包括设于所述刚性骨架2外部的支撑筒1，所述支撑筒1由带状的卷材11卷绕而成，所述卷材11具有多孔结构，所述卷材11的中心线卷绕后呈圆柱螺旋线形状。所述卷材11的厚度为0.6mm，孔隙率为50％，宽度为102.39mm。所述螺旋线的螺旋角α为75°。所述卷材11为长方形，所述卷材11的两个长边卷绕后接触焊接成型，焊接的宽度为3mm。
实施例9
如图6所示的过滤结构的支撑结构，包括刚性支撑层和弹性支撑层，所述刚性支撑层设于所述弹性支撑层的内部；所述支撑结构设于过滤结构的内部。
所述弹性支撑层包括孔隙率为70％、厚度为0.4mm的弹性网筒3；所述弹性网筒3为编织网制成的网筒。
所述刚性支撑层包括刚性骨架2，所述刚性骨架2包括外径与过滤结构内径匹配的支撑环21、与过滤结构长度匹配且与所述支撑环21连接的至少两个支撑杆22；所述支撑杆22与所述支撑环21的内壁连接。所述支撑环21按照200mm的间距分布。所述支撑环21的环体直径为5mm。所述支撑杆22按照30mm的间距分布。所述支撑杆22为圆柱形，直径为4mm。
实施例10
如图6所示的过滤结构的支撑结构，包括刚性支撑层和弹性支撑层，所述刚性支撑层设于所述弹性支撑层的内部；所述支撑结构设于过滤结构的内部。
所述弹性支撑层包括孔隙率为80％、厚度为0.6mm的弹性网筒3；所述弹性网筒3为切拉网制成的网筒。
所述刚性支撑层包括刚性骨架2，所述刚性骨架2包括外径与过滤结构内径匹配的支撑环21、与过滤结构长度匹配且与所述支撑环21连接的至少两个支撑杆22；所述支撑杆22与所述支撑环21的内壁连接。所述支撑环21按照200mm的间距分布。所述支撑环21的环体直径为5mm。所述支撑杆22按照30mm的间距分布。所述支撑杆22为圆柱形，直径为4mm。
实施例11
如图6所示的过滤结构的支撑结构，包括刚性支撑层和弹性支撑层，所述刚性支撑层设于所述弹性支撑层的内部；所述支撑结构设于过滤结构的内部。
所述弹性支撑层包括孔隙率为90％、厚度为0.8mm的弹性网筒3；所述弹性网筒3为编织网制成的网筒。
所述刚性支撑层包括刚性骨架2，所述刚性骨架2包括外径与过滤结构内径匹配的支撑环21、与过滤结构长度匹配且与所述支撑环21连接的至少两个支撑杆22；所述支撑杆22与所述支撑环21的内壁连接。所述支撑环21按照200mm的间距分布。所述支撑环21的环体直径为5mm。所述支撑杆22按照30mm的间距分布。所述支撑杆22为圆柱形，直径为4mm。
实施例12
如图7所示的过滤结构的支撑结构，包括孔隙率为80％、厚度为0.6的弹性网筒3、与所述弹性网筒3头部连接的上接头以及与所述弹性网筒3尾部连接的下接头。所述上接头5具有与所述弹性网筒3头部内壁配合的第一台阶51以及与所述过滤结构头部内壁配合的第二台阶52；所述下接头6具有与所述弹性网筒3尾部内壁配合的第三台阶61，所述下接头6的外壁与所述过滤结构尾部的内壁配合。所述上接头5与所述弹性网筒3焊接；所述下接头6与所述弹性网筒3焊接。所述第一台阶51和第三台阶61与所述弹性网筒3的配合宽度为10mm。所述弹性网筒3为切拉网制成的网筒。
实施例13
如图7所示的过滤结构的支撑结构，包括孔隙率为90％、厚度为0.8的弹性网筒3、与所述弹性网筒3头部连接的上接头以及与所述弹性网筒3尾部连接的下接头。所述上接头5具有与所述弹性网筒3头部内壁配合的第一台阶51以及与所述过滤结构头部内壁配合的第二台阶52；所述下接头6具有与所述弹性网筒3尾部内壁配合的第三台阶61，所述下接头6的外壁与所述过滤结构尾部的内壁配合。所述上接头5与所述弹性网筒3焊接；所述下接头6与所述弹性网筒3焊接。所述第一台阶51和第三台阶61与所述弹性网筒3 的配合宽度为10mm。所述弹性网筒3为切拉网制成的网筒。
实施例14
如图8所示的过滤结构的支撑结构，包括孔隙率为70％、厚度为0.4的弹性网筒3、与所述弹性网筒3头部连接的上接头以及与所述弹性网筒3尾部连接的下接头。所述上接头5具有与所述弹性网筒3头部内壁配合的第一台阶51以及与所述过滤结构头部内壁配合的第二台阶52；所述下接头6具有与所述弹性网筒3尾部内壁配合的第三台阶61，所述下接头6的外壁与所述过滤结构尾部的内壁配合。所述上接头5与所述弹性网筒3焊接；所述下接头6与所述弹性网筒3焊接。所述第一台阶51和第三台阶61与所述弹性网筒3的配合宽度为10mm。所述弹性网筒3为切拉网制成的网筒。
所述弹性网筒3由带状的卷材11卷绕而成，所述卷材11具有多孔结构，所述卷材11为长方形，所述卷材11的中心线卷绕后呈圆柱螺旋线形状。所述螺旋线的螺旋角α为75°。所述卷材11的两个长边卷绕后接触焊接成型，焊接的宽度为3mm。当螺旋角α为75°时、弹性网筒3的中径为126mm时，所需卷材11的宽度为102.39mm。
实施例15
如图9-11所示的过滤结构，所述过滤结构包括由带状的多孔过滤材料41卷绕而成的膜筒4，所述多孔过滤材料41为长方形，所述多孔过滤材料41的中心线卷绕后呈圆柱螺旋线形状。所述螺旋线的螺旋角α为50°。所述多孔过滤材料41主要由粉末烧结金属多孔材料构成，是一种厚度为1500微米且可折叠的柔性金属薄膜。当螺旋角α为50°时、膜筒4的中径为135mm时，所需多孔过滤材料41的宽度为272.14mm。
所述多孔过滤材料41的两条长边卷绕后不重合，间距为2mm，所述多孔过滤材料41的两条长边的对接处设有连接两条长边的焊条42；卷绕后，所述焊条42位于膜筒4的内侧；所述焊条42与所述多孔过滤材料41的每一个长边的接触宽度为12mm。
实施例16
如图9-11所示的过滤结构，所述过滤结构包括由带状的多孔过滤材料41卷绕而成的膜筒4，所述多孔过滤材料41为长方形，所述多孔过滤材料41的中心线卷绕后呈圆柱螺旋线形状。所述螺旋线的螺旋角α为55°。所述多孔过滤材料41主要由粉末烧结金属多孔材料构成，是一种厚度为1000微米且可折叠的柔性金属薄膜。当螺旋角α为55°时、膜筒4的中径为135mm时，所需多孔过滤材料41的宽度为242.89mm。
所述多孔过滤材料41的两条长边卷绕后不重合，间距为2mm，所述多孔过滤材料41的两条长边的对接处设有连接两条长边的焊条42；卷绕后，所述焊条42位于膜筒4的内 侧；所述焊条42与所述多孔过滤材料41的每一个长边的接触宽度为10mm。
实施例17
如图9-11所示的过滤结构，所述过滤结构包括由带状的多孔过滤材料41卷绕而成的膜筒4，所述多孔过滤材料41为长方形，所述多孔过滤材料41的中心线卷绕后呈圆柱螺旋线形状。所述螺旋线的螺旋角α为60°。所述多孔过滤材料41主要由粉末烧结金属多孔材料构成，是一种厚度为200微米且可折叠的柔性金属薄膜。当螺旋角α为60°时、膜筒4的中径为135mm时，所需多孔过滤材料41的宽度为211.95mm。
所述多孔过滤材料41的两条长边卷绕后不重合，间距为2mm，所述多孔过滤材料41的两条长边的对接处设有连接两条长边的焊条42；卷绕后，所述焊条42位于膜筒4的内侧；所述焊条42与所述多孔过滤材料41的每一个长边的接触宽度为9mm。
实施例15-17的膜筒4的制备方法为：在卷绕前在多孔过滤材料41的一个长边的内侧焊接焊条42，然后使多孔过滤材料41沿自身卷绕成筒状，然后电阻焊接焊条42与另一个长边，即得到膜筒4。
实施例18
如图12-14所示的过滤结构，所述过滤结构包括由带状的多孔过滤材料41卷绕而成的膜筒4，所述多孔过滤材料41为长方形，所述多孔过滤材料41的中心线卷绕后呈圆柱螺旋线形状。所述螺旋线的螺旋角α为70°。所述多孔过滤材料41主要由粉末烧结金属多孔材料构成，是一种厚度为50微米且可折叠的柔性金属薄膜。当螺旋角α为70°时、膜筒4的中径为135mm时，所需多孔过滤材料41的宽度为144.97mm。
所述多孔过滤材料41的两条长边卷绕后不重合，间距为2mm，所述多孔过滤材料41的两条长边的对接处设有连接两条长边的焊条42；卷绕后，所述焊条42位于过滤结构的外侧；所述焊条42与所述多孔过滤材料41的每一个长边的接触宽度为8mm。
实施例18的膜筒4的制备方法为：使多孔过滤材料41沿圆柱形支撑体外壁卷绕成筒状，卷绕后采用焊条42电阻焊接固定两个长边，取下圆柱形支撑体后即得到膜筒4。
实施例19
如图15-17所示的过滤结构，所述过滤结构包括由带状的多孔过滤材料41卷绕而成的膜筒4，所述多孔过滤材料41为长方形，所述多孔过滤材料41的中心线卷绕后呈圆柱螺旋线形状。所述螺旋线的螺旋角α为75°。所述多孔过滤材料41主要由粉末烧结金属多孔材料构成，是一种厚度为20微米且可折叠的柔性金属薄膜。当螺旋角α为75°时、膜筒4的中径为135mm时，所需多孔过滤材料41的宽度为109.79mm。
所述多孔过滤材料41的两条长边卷绕后不重合，间距为2mm，所述多孔过滤材料41的两条长边的对接处设有连接两条长边的胶带43；卷绕后，所述胶带43位于过滤结构的外侧；所述胶带43与所述多孔过滤材料41的每一个长边的接触宽度为10mm。
实施例19的膜筒4的制备方法为：使多孔过滤材料41沿圆柱形支撑体外壁卷绕成筒状，卷绕后采用胶带43粘接固定两个长边，取下圆柱形支撑体后即得到膜筒4。
实施例20
如图18所示的滤芯，包括过滤结构和支撑所述过滤结构的支撑结构，其中，所述过滤结构采用实施例15的过滤结构，所述支撑结构采用实施例6的过滤结构的支撑结构。
实施例21
如图19所示的滤芯，包括过滤结构和支撑所述过滤结构的支撑结构，其中，所述过滤结构采用实施例16的过滤结构，所述支撑结构采用实施例13的过滤结构的支撑结构。
实施例22
如图20所示的滤芯，包括过滤结构和支撑所述过滤结构的支撑结构，其中，所述过滤结构采用实施例17的过滤结构，所述支撑结构采用实施例3的过滤结构的支撑结构。
实施例23
如图21所示的滤芯，包括过滤结构和支撑所述过滤结构的支撑结构，其中，所述过滤结构采用实施例18的过滤结构，所述支撑结构采用实施例10的过滤结构的支撑结构。
实施例24
如图22所示的滤芯，包括过滤结构和支撑所述过滤结构的支撑结构，其中，所述过滤结构采用实施例19的过滤结构，所述支撑结构采用实施例8的过滤结构的支撑结构。
实施例25
滤芯，包括过滤结构和支撑所述过滤结构的支撑结构，其中，所述过滤结构采用实施例16的过滤结构，所述支撑结构采用实施例12的过滤结构的支撑结构。
如图18-32所示，应用实施例20-25之一的滤芯的过滤装置的结构如下：所述滤芯内侧为净气腔或净液腔；所述支撑结构位于所述过滤结构的内部；密封结构包括与所述过滤结构和支撑结构的头部连接的上接头5以及与所述过滤结构和支撑结构的尾部连接的下接头6；所述上接头5具有与滤芯内部导通的开口、与所述支撑结构内壁配合的第一台阶51以及与所述过滤结构内壁配合的第二台阶52；所述下接头6封闭，包括与所述支撑结构内壁配合的第三台阶61，所述过滤结构的内壁与所述下接头6外壁配合。所述上接头5与所述过滤结构和支撑结构焊接；所述下接头6与所述过滤结构和支撑结构焊接。
所述第一台阶51和第三台阶61与所述支撑结构的配合宽度为10mm；所述第二台阶52和所述下接头6外壁与所述过滤结构的配合宽度为20mm。
还包括与所述上接头5连接的上孔板以及与所述下接头6连接的下孔板，所述上孔板与所述下孔板之间形成原气腔或原液腔。
以上对本发明的有关内容进行了说明。本领域普通技术人员在基于这些说明的情况下将能够实现本发明。基于本发明的上述内容，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都应当属于本发明保护的范围。

Claims (20)

  1. 过滤结构，其特征在于：所述过滤结构包括由带状的多孔过滤材料(41)卷绕而成的膜筒(4)，所述多孔过滤材料(41)卷绕后形成的接缝不与所述膜筒(4)的中心轴平行。
  2. 如权利要求1所述的过滤结构，其特征在于：所述多孔过滤材料(41)主要由粉末烧结金属多孔材料构成；所述多孔过滤材料(41)是一种厚度≤1500微米且可折叠的柔性金属薄膜。
  3. 如权利要求1所述的过滤结构，其特征在于：所述多孔过滤材料(41)的中心线卷绕后呈螺旋线形状；所述多孔过滤材料(41)为长方形。
  4. 如权利要求3所述的过滤结构，其特征在于：所述螺旋线为圆柱螺旋线；所述圆柱螺旋线的螺旋角α为50-75°。
  5. 如权利要求3所述的过滤结构，其特征在于：所述多孔过滤材料(41)的两条长边卷绕后不重合，间距为1-3mm。
  6. 如权利要求5所述的过滤结构，其特征在于：所述多孔过滤材料(41)的两条长边的对接处设有连接两条长边的焊条(42)，所述焊条(42)位于膜筒(4)的内侧或外侧；或者，所述多孔过滤材料(41)的两条长边的对接处设有连接两条长边的胶带(43)，所述胶带(43)位于膜筒(4)的外侧。
  7. 如权利要求6所述的过滤结构，其特征在于：所述焊条(42)与所述多孔过滤材料(41)的每一个长边的接触宽度为3-6mm；所述胶带(43)与所述多孔过滤材料(41)的每一个长边的接触宽度为5-9mm。
  8. 过滤结构的制备方法，包括使多孔过滤材料(41)卷绕成膜筒(4)，所述多孔过滤材料(41)卷绕后形成的接缝不与所述膜筒(4)的中心轴平行。
  9. 如权利要求8所述的过滤结构的制备方法，其特征在于：还包括在卷绕前在多孔过滤材料(41)的一个长边的内侧焊接焊条(42)以及在沿多孔过滤材料(41)自身卷绕后焊接固定，即得到膜筒(4)。
  10. 如权利要求8所述的过滤结构的制备方法，其特征在于：所述卷绕为使多孔过滤材料(41)沿圆柱形支撑体外壁卷绕后采用胶带(43)粘接固定或采用焊条(42)焊接固定，取下圆柱形支撑体后即得到膜筒(4)。
  11. 滤芯，包括过滤结构和支撑所述过滤结构的支撑结构，其特征在于：所述过滤结构为权利要求1-7之一的过滤结构或采用权利要求8-10之一的过滤结构的制备方法制备 得到的过滤结构。
  12. 如权利要求11所述的滤芯，其特征在于：所述支撑结构包括由带状的卷材(11)卷绕而成的支撑筒(1)，所述卷材(11)具有多孔结构，所述卷材(11)卷绕后形成的接缝不与所述支撑筒(1)的中心轴平行；所述支撑结构的厚度为0.6-1mm；所述支撑结构的孔隙率为50-80％。
  13. 如权利要求12所述的滤芯，其特征在于：所述卷材(11)的中心线卷绕后呈螺旋线形状；所述卷材(11)为长方形。
  14. 如权利要求13所述的滤芯，其特征在于：所述螺旋线为圆柱螺旋线；所述圆柱螺旋线的螺旋角α为50-75°。
  15. 如权利要求13所述的滤芯，其特征在于：所述卷材(11)的两个长边卷绕后接触焊接成型或采用胶带粘接。
  16. 如权利要求11所述的滤芯，其特征在于：所述支撑结构包括刚性支撑层和/或弹性支撑层。
  17. 如权利要求16所述的滤芯，其特征在于：所述弹性支撑层包括弹性网筒(3)，所述弹性网筒(3)的孔隙率为70-90％、厚度为0.4-0.8mm。
  18. 如权利要求16所述的滤芯，其特征在于：所述刚性支撑层包括刚性骨架(2)，所述刚性骨架(2)包括外径与过滤结构内径匹配的支撑环(21)、与过滤结构长度匹配且与所述支撑环(21)连接的至少两个支撑杆(22)；所述支撑杆(22)与所述支撑环(21)的内壁连接。
  19. 如权利要求16所述的滤芯，其特征在于：当所述支撑结构包括刚性支撑层和弹性支撑层时，所述刚性支撑层设于所述弹性支撑层的内部。
  20. 如权利要求11所述的滤芯，其特征在于：所述支撑结构位于所述过滤结构的内部，所述支撑结构内部为净气腔或净液腔。
PCT/CN2020/076537 2019-03-19 2020-02-25 过滤结构、过滤结构的制备方法以及滤芯 WO2020186975A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910209293.7 2019-03-19
CN201910209293.7A CN109772172A (zh) 2019-03-19 2019-03-19 过滤结构的支撑结构以及滤芯

Publications (1)

Publication Number Publication Date
WO2020186975A1 true WO2020186975A1 (zh) 2020-09-24

Family

ID=66488384

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/076537 WO2020186975A1 (zh) 2019-03-19 2020-02-25 过滤结构、过滤结构的制备方法以及滤芯

Country Status (2)

Country Link
CN (1) CN109772172A (zh)
WO (1) WO2020186975A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109772172A (zh) * 2019-03-19 2019-05-21 成都易态科技有限公司 过滤结构的支撑结构以及滤芯

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020070158A1 (en) * 1998-06-12 2002-06-13 Klaus Buecher Membrane element and process for its production
CN102600730A (zh) * 2012-03-20 2012-07-25 北京坎普尔环保技术有限公司 外压管式膜制备方法
CN103007788A (zh) * 2012-12-17 2013-04-03 浙江理工大学 一种包缠式聚四氟乙烯超微滤管式膜的制备方法
CN104874798A (zh) * 2015-05-26 2015-09-02 成都易态科技有限公司 多孔薄膜及多孔薄膜的制备方法
CN109772172A (zh) * 2019-03-19 2019-05-21 成都易态科技有限公司 过滤结构的支撑结构以及滤芯
CN109772173A (zh) * 2019-03-19 2019-05-21 成都易态科技有限公司 过滤结构以及过滤结构的制备方法
CN210021761U (zh) * 2019-03-19 2020-02-07 成都易态科技有限公司 过滤装置的密封结构
CN210021767U (zh) * 2019-03-19 2020-02-07 成都易态科技有限公司 滤芯
CN210021764U (zh) * 2019-03-19 2020-02-07 成都易态科技有限公司 滤芯
CN210021768U (zh) * 2019-03-19 2020-02-07 成都易态科技有限公司 滤芯
CN210021766U (zh) * 2019-03-19 2020-02-07 成都易态科技有限公司 过滤结构的支撑结构
CN210021763U (zh) * 2019-03-19 2020-02-07 成都易态科技有限公司 过滤结构的支撑结构
CN210448762U (zh) * 2019-03-19 2020-05-05 成都易态科技有限公司 过滤结构的支撑结构

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7287684B2 (en) * 2002-07-03 2007-10-30 Tubular Perforating Mfg., Ltd. Filter cartridge assembly and method of manufacture
CN202219111U (zh) * 2011-09-01 2012-05-16 张家港市联通化机有限公司 滤芯骨架
CN103055585A (zh) * 2012-09-28 2013-04-24 天津润德滤清器有限公司 一种螺旋冲孔式滤清器中心管
CN203017914U (zh) * 2013-03-20 2013-06-26 北京承天倍达过滤技术有限责任公司 新型气体聚结滤芯骨架
CN203620339U (zh) * 2013-11-21 2014-06-04 上海闰铭精密技术有限公司 新型折波滤芯
CN205127510U (zh) * 2015-10-13 2016-04-06 成都易态科技有限公司 过滤结构
CN205516833U (zh) * 2016-03-15 2016-08-31 新乡市利菲尔特滤器股份有限公司 一种螺旋骨架滤芯
CN210021765U (zh) * 2019-03-19 2020-02-07 成都易态科技有限公司 过滤结构的支撑结构以及滤芯

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020070158A1 (en) * 1998-06-12 2002-06-13 Klaus Buecher Membrane element and process for its production
CN102600730A (zh) * 2012-03-20 2012-07-25 北京坎普尔环保技术有限公司 外压管式膜制备方法
CN103007788A (zh) * 2012-12-17 2013-04-03 浙江理工大学 一种包缠式聚四氟乙烯超微滤管式膜的制备方法
CN104874798A (zh) * 2015-05-26 2015-09-02 成都易态科技有限公司 多孔薄膜及多孔薄膜的制备方法
CN109772172A (zh) * 2019-03-19 2019-05-21 成都易态科技有限公司 过滤结构的支撑结构以及滤芯
CN109772173A (zh) * 2019-03-19 2019-05-21 成都易态科技有限公司 过滤结构以及过滤结构的制备方法
CN210021761U (zh) * 2019-03-19 2020-02-07 成都易态科技有限公司 过滤装置的密封结构
CN210021767U (zh) * 2019-03-19 2020-02-07 成都易态科技有限公司 滤芯
CN210021764U (zh) * 2019-03-19 2020-02-07 成都易态科技有限公司 滤芯
CN210021768U (zh) * 2019-03-19 2020-02-07 成都易态科技有限公司 滤芯
CN210021766U (zh) * 2019-03-19 2020-02-07 成都易态科技有限公司 过滤结构的支撑结构
CN210021763U (zh) * 2019-03-19 2020-02-07 成都易态科技有限公司 过滤结构的支撑结构
CN210448762U (zh) * 2019-03-19 2020-05-05 成都易态科技有限公司 过滤结构的支撑结构

Also Published As

Publication number Publication date
CN109772172A (zh) 2019-05-21

Similar Documents

Publication Publication Date Title
CN109772173B (zh) 过滤结构以及过滤结构的制备方法
WO2020186975A1 (zh) 过滤结构、过滤结构的制备方法以及滤芯
WO2022134482A1 (zh) 一种宽幅纤维网增强塑料复合管材
CN210021765U (zh) 过滤结构的支撑结构以及滤芯
CN210021762U (zh) 过滤结构
CN210448762U (zh) 过滤结构的支撑结构
CN210021763U (zh) 过滤结构的支撑结构
CN210021761U (zh) 过滤装置的密封结构
CN210021764U (zh) 滤芯
CN210021768U (zh) 滤芯
CN210021766U (zh) 过滤结构的支撑结构
CN210021767U (zh) 滤芯
CN209469894U (zh) 一种梯形圆孔pe缠绕波纹管和型材
CN205145728U (zh) 过滤组件
CN105169782A (zh) 过滤组件及其制作方法
CN108283847A (zh) 内滤式过滤装置
CN205235622U (zh) 柔性多孔金属滤袋反吹引流结构
CN219922312U (zh) 一种过滤单元及其构成的过滤装置
CN213725333U (zh) 一种螺旋型高温烟气过滤器
CN219493353U (zh) 一种汽车冷却系统防吸瘪的胶管结构
CN211501974U (zh) 一种建筑钢管的连接卡扣
JP7152801B2 (ja) 除塵フィルターカートリッジ
CN111496144B (zh) 一种叠焊式多层钢网骨架的焊接方法
CN210085026U (zh) 一种反渗透膜元件的集水管的连接结构
CN208302413U (zh) 内滤式过滤装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20772830

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20772830

Country of ref document: EP

Kind code of ref document: A1