CN210021762U

CN210021762U - Filtering structure

Info

Publication number: CN210021762U
Application number: CN201920351401.XU
Authority: CN
Inventors: 高麟; 汪涛; 李翔
Original assignee: Intermet Technology Chengdu Co Ltd
Current assignee: Intermet Technology Chengdu Co Ltd
Priority date: 2019-03-19
Filing date: 2019-03-19
Publication date: 2020-02-07
Anticipated expiration: 2029-03-19

Abstract

The utility model discloses a filtration. The filter structure comprises a membrane cylinder formed by winding a band-shaped porous filter material, and a seam formed after the porous filter material is wound is not parallel to the central axis of the membrane cylinder. When the filtering structure bears internal and external pressure, the maximum main stress of the filtering structure is vertical to the central axis of the filtering structure and acts on each circular section; in the traditional straight seam filtering structure (namely, the seam is parallel to the central axis of the filtering structure), the seam can directly bear the maximum main stress, and the requirement on the strength of the seam is high. When the seam not with when the center pin of a membrane section of thick bamboo is parallel, the stress that seam department mainly bore is the component of main stress, radial stress and axial stress promptly, and two kinds of stress value obviously are less than the main stress of transversal joint filtration, consequently, under same operating pressure and same pipe diameter, the utility model discloses a filtration thickness can show the reduction, and the porosity can show the promotion to promote effective filtration area.

Description

Filtering structure

Technical Field

The utility model relates to a filter equipment's technical field particularly, relates to filtration.

Background

The applicant of the present application filed patent applications with publication numbers CN104874798A (named porous film and preparation method of porous film), CN104874801A (named porous film and preparation method of porous film), CN104959612A (named porous film and preparation method of porous film), and CN104959611A (named porous film and preparation method of porous film), respectively, in the recent years, disclosed a foldable flexible metal film with a thickness of 1500 microns or less, and more preferably, a high air permeability is easily achieved when the thickness is 200 microns or less. At present, the flexible metal film is mainly applied to a filter element for gas-solid and liquid-solid filtering separation in severe environments such as high temperature, high pressure, strong corrosivity and the like in the ceramic industry, metallurgy, coal chemical industry, thermal power generation and the like.

As shown in fig. 1, a conventional flexible bag-type filter element using a flexible metal membrane as a filter material is generally used by cutting the flexible metal membrane according to the diameter and length of a membrane cartridge, welding the flexible metal membrane to form a membrane cartridge, and then using a dedicated support structure in the bag and a seal structure at both ends. The filter element filter material has wider application temperature range and larger air flux, but still has the following problems:

(1) the support structure is mostly manufactured by straight seam welding of a scrap punch or direct hole opening of a pipe, the wall thickness of the support structure needs to be increased to meet the requirement of working condition pressure difference due to poor performance and size guarantee capability of the support structure, and the weight of the filter element is obviously improved due to the fact that the thickness is more than 1.2 mm; meanwhile, the porosity of the support structure is mostly 40-60%, and the effective filtering area of the membrane cylinder is obviously reduced;

(2) the film cylinder adopts a straight seam welding structure, and when external pressure is borne, the straight seam welding structure has poor pressure bearing capacity, so that the film cylinder can only be used under low working condition pressure difference;

(3) in the using process, the supporting structure can rub the membrane cylinder to cause the failure of the filter element, and the reliability of the filter element is influenced; meanwhile, the effective filtering area of the filter element can be reduced by the internal supporting structure, so that the resistance of the filter element is increased, and the running cost is increased;

(4) the filter element has poor sealing structure or good sealing effect but complex structure, so that the filtering pressure is obviously improved and the manufacturing cost is high.

SUMMERY OF THE UTILITY MODEL

An object of an aspect of the utility model is to provide a bearing structure to solve among the prior art poor and thicker problem of bearing structure intensity. An object of another aspect of the present invention is to provide a filter structure and a method for manufacturing the filter structure to solve the problem of poor strength of the filter structure in the prior art. The utility model discloses an object of another aspect provides the filter core to solve among the prior art problem that filter core intensity is poor and effective filter area is little. An object of another aspect of the present invention is to provide a sealing structure to solve the problem that the prior art sealing structure is poor or has a good sealing effect but a complex structure.

In order to achieve the above object, the present invention provides a first supporting structure as follows:

the support structure of the filter structure comprises a support cylinder formed by winding a strip-shaped coiled material, wherein the coiled material has a porous structure, and a seam formed after the coiled material is wound is not parallel to the central shaft of the support cylinder.

When the supporting cylinder bears internal and external pressures, the maximum main stress of the supporting cylinder is vertical to the central axis of the supporting cylinder and acts on each circular section; in the traditional straight welded pipe (namely, the joint is parallel to the central axis of the welded pipe), the joint can directly bear the maximum main stress, and the requirement on the strength of the weld is high. When the seam not with when the center pin of a supporting cylinder is parallel, the stress that seam department mainly bore is the component of main stress, radial stress and axial stress promptly, and two kinds of stress value obviously are less than the main stress of transversal welded pipe, consequently, under same operating pressure and same pipe diameter, the utility model discloses a bearing structure thickness can show the reduction, and the porosity can show the promotion to promote filtration's effective filter area, promote blowback deashing effect and filtration efficiency.

Further, the central line of the coiled material is in a spiral line shape after being coiled. Under the condition of the same material, the rigidity of the spiral forming supporting structure is better, and the stress borne by the joint can be obviously reduced. Meanwhile, compared with a straight seam forming process, the spiral forming supporting structure is more beneficial to ensuring the shape and position tolerance sizes of roundness, straightness and the like, and is beneficial to improving the strength of the supporting structure.

Further, the coil is rectangular. When the coiled material is a regular rectangle, the shape of the joint can be ensured to be regular, and when the central line of the coiled material is coiled into a spiral line shape, the seam is also in a spiral line shape, so that the stability of the spiral angle can be conveniently controlled, and the surface smoothness of the supporting cylinder is improved.

Further, the spiral line is a cylindrical spiral line; the radial projection of the cylindrical helix is circular. Therefore, the shape of the supporting cylinder is consistent everywhere, and the supporting effect is better.

The spiral angle α calculation formula is that cos α is B/(pi x D), wherein B is the width of the coiled material, D is the middle diameter of the supporting cylinder, and D is the outer diameter of the supporting cylinder-the wall thickness of the supporting cylinder, or the inner diameter of the supporting cylinder plus the wall thickness of the supporting cylinder, and the spiral angle calculation formula of the filtering structure is that the supporting cylinder and the coiled material are replaced by a porous filtering material.

Further, two long edges of the coiled material are in contact welding forming or are adhered by using adhesive tapes after being wound. Therefore, the joint has strong binding force and high production efficiency. When the contact welding forming is adopted, argon arc welding is preferably adopted, so that the processing is convenient and the strength is high.

Further, the width of the weld is 2-4 mm. Therefore, the strong binding force is ensured, and the influence of the too wide welding line on the filtering area is avoided.

Further, the porosity of the coil is 50-80%. When the porosity of the coil is higher than the above numerical range, the strength is low. When the porosity of the web is lower than the above numerical range, the effective filtration area is reduced. Thus, when the porosity of the web is 50-80%, a high effective filtration area and strength can be ensured.

Further, the thickness of the coil stock is 0.6-1 mm. When the thickness of the coiled material is higher than the numerical range, the spiral forming is not facilitated; when the thickness of the coil is less than the above numerical range, the strength is low. Thus, when the thickness of the coil stock is 0.6 to 1mm, a high forming effect and strength can be secured.

The filter element comprises a filter structure and a support structure, wherein the support structure is the support structure of the filter structure.

Further, the support structure is located inside the filter structure; the filtering structure is a membrane cylinder formed by winding a flexible metal film. The flexible metal film refers to any porous film in the background technology. Therefore, the filtering structure is better supported, and the high-strength external filtering type filtering device is formed.

In order to achieve the above object, the present invention provides a second supporting structure as follows:

the supporting structure comprises a rigid framework, the rigid framework comprises a supporting ring with the outer diameter matched with the inner diameter of the filtering structure, and at least two supporting rods with the length matched with the length of the filtering structure and connected with the supporting ring; the support rod is connected with the inner wall of the support ring.

Compare in the porous tubular bearing structure of traditional structure, higher effective filtration area can be guaranteed to the at utmost to the rigidity skeleton under the prerequisite of guaranteeing better supporting effect. The support rod is connected with the inner wall of the support ring in the rigid framework of the utility model, the support ring arranged in this way can improve the length-diameter ratio of the support structure, so that the stress state of the support structure is changed from a long cylinder into a short cylinder, and the rigidity of the support structure is improved; adopt the utility model discloses a bearing structure of rigid skeleton rigidity under the same operating mode is more excellent, and resistant negative pressure is better, can reduce bearing structure and filtration's area of contact to promote effective filter area, promote blowback deashing effect and filtration efficiency. The support bar may provide secondary support to the filter structure.

Further, the support rings are distributed at intervals of 150-. Thereby, a better supporting effect is ensured.

Further, the diameter of the ring body of the support ring is 3-5 mm. Therefore, a wider gas flow channel is ensured, and better strength is ensured, so that a better supporting effect is generated.

Furthermore, the bracing piece is at least three and be equidistant distribution. Thereby, a better supporting effect is ensured.

Furthermore, the support rods are distributed according to the interval of 20-30 mm. Thereby, a better supporting effect is ensured.

Further, the support rod is cylindrical. Therefore, a better supporting effect is ensured, and the filter structure is prevented from being damaged due to mechanical abrasion.

Further, the diameter of the supporting rod is 3-5 mm. Thereby ensuring a better supporting effect

Further, the supporting structure further comprises a supporting cylinder arranged outside the rigid framework, the supporting cylinder is formed by winding a strip-shaped coiled material, the coiled material has a porous structure, and a seam formed after the coiled material is wound is not parallel to the central shaft of the supporting cylinder. From this, further promote bearing structure's intensity, ensure better supporting effect, be applicable to higher pressure differential operating mode.

Further, the thickness of the coiled material is 0.6-1 mm; the porosity of the coil is 50-80%.

Further, the support structure is located inside the filter structure; the filtering structure is a membrane cylinder formed by winding a flexible metal film.

In order to achieve the above object, the present invention provides a third supporting structure as follows:

a support structure for a filtration structure comprising: the rigid supporting layer is arranged in the elastic supporting layer; the support structure is arranged inside the filter structure.

In the filtering and back-blowing processes, the elastic supporting layer can elastically deform inwards and outwards, so that the filtering structure is well supported in the filtering and back-blowing states; simultaneously, because the elastic supporting layer can inwards deform, the deformation amount of the filter structure when the filter structure is subjected to back flushing can be effectively increased, so that dust on the surface of the filter structure shakes during back flushing, and the dust on the surface of the filter structure is favorably stripped during back flushing. The rigid framework generates secondary support for the filtering structure, so that the strength and rigidity of the filtering structure are reliable, and meanwhile, the higher effective filtering area is ensured to the maximum extent.

Further, the elastic support layer comprises an elastic net cylinder with the porosity of 70-90% and the thickness of 0.4-0.8 mm. This ensures a high filter area and suitable elasticity.

Further, the elastic net cylinder is a net cylinder made of a cutting and pulling net or a woven net. The cutting and pulling net is a metal net obtained by punching and stretching a steel plate, and compared with a traditional woven net, the node strength of the cutting and pulling net is higher, the elasticity is better, and the strength of a supporting structure is favorably improved. The woven mesh is a metal mesh woven by metal wires, the diameter of the open pores of the woven mesh can be obviously smaller than that of a cut-and-drawn mesh due to the fact that the metal wires are mutually interwoven, and when the metal mesh woven by the thin metal wires is adopted, a thinner elastic mesh tube can be obtained.

Further, the rigid support layer also comprises a rigid framework, and the rigid framework comprises a support ring with the outer diameter matched with the inner diameter of the filter structure, and at least two support rods which are matched with the length of the filter structure and connected with the support ring. Because the elastic net barrel is very thin and the porosity is very high, the supporting effect can be improved by arranging the rigid framework, the supporting structure with the composite structure is provided, and the weight and the supporting effect of the supporting structure are still obviously superior to those of the existing porous pipe supporting structure.

Further, the support bar is connected with the inner wall of the support ring.

Further, the support rings are distributed according to the interval of 150-; the diameter of the ring body of the support ring is 3-5 mm.

Furthermore, the bracing piece is at least three and be equidistant distribution.

Furthermore, the support rods are distributed according to the interval of 20-30 mm.

Further, the support rod is cylindrical.

Further, the diameter of the supporting rod is 3-5 mm.

In order to achieve the above object, the present invention provides a fourth supporting structure as follows:

the supporting structure of the filtering structure comprises 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.

When the elastic net cylinder is limited between the upper joint and the lower joint, certain elastic deformation can be generated in the filtering and back blowing processes. In the filtering process, the elastic supporting layer can elastically deform towards the inside, so that the influence on the filtering surface of the filtering structure is reduced. In the back flushing process, the elastic supporting layer can be elastically deformed outwards, so that the filtering structure is better supported, and dust on the surface of the filter element is favorably stripped in the back flushing process.

Furthermore, the porosity of the elastic net cylinder is 70-90%, and the thickness of the elastic net cylinder is 0.4-0.8 mm. This ensures a high filter area and suitable elasticity.

Further, the elastic net cylinder is a net cylinder made of a cutting and pulling net or a woven net.

Further, the upper joint is provided with a first step matched with the inner wall of the head of the elastic net cylinder; the lower joint is provided with a third step matched with the inner wall of the tail part of the elastic net cylinder. Therefore, the structure is simple, the processing is convenient, and the strength of the butt joint of the obtained support structure is high.

Further, the upper joint is also provided with a second step matched with the inner wall of the head of the filtering structure; the outer wall of the lower joint is matched with the inner wall of the tail part of the filtering structure. Thereby facilitating connection with the filter structure.

Further, the upper joint is welded or bonded with the elastic net barrel; the lower joint is welded or bonded with the elastic net cylinder. Therefore, the structure is simple, the butt joint is easy to connect, and the strength is high.

Further, the matching 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.

Further, the elastic net barrel is formed by winding a strip-shaped coil material, the coil material has a porous structure, and a seam formed after the coil material is wound is not parallel to the central axis of the elastic net barrel. Therefore, the strength of the elastic net barrel is further improved on the premise of ensuring the elasticity of the elastic net barrel.

Further, the central line of the coiled material is in a spiral line shape after being coiled.

Furthermore, the spiral line is a cylindrical spiral line, and the spiral angle α of the spiral line is 50-75 degrees.

Further, two long edges of the coiled material are in contact welding forming or are adhered by using adhesive tapes after being wound.

In order to achieve the above object, the utility model provides a seal structure as follows:

the sealing structure of the filtering device comprises a filter element, the filter element comprises a filtering structure and a supporting structure for supporting the filtering structure, and 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 comprises an upper joint connected with the head parts of the filtering structure and the supporting structure and a lower joint connected with the tail parts of the filtering structure and the supporting structure; the upper connector is provided with an opening communicated with the inside of the filter element, a first step matched with the inner wall of the supporting structure and a second step matched with the inner wall of the filtering structure; the lower joint is sealed, include with bearing structure inner wall complex third step, filtration's inner wall with the cooperation of lower joint outer wall.

The head and the tail adopt different sealing structures, the structure is simple, the sealing effect is good, and the filtering pressure and the back-blowing dust-cleaning pressure can be obviously reduced.

Further, the upper joint is welded or bonded with the filtering structure and the supporting structure; the lower joint is welded or bonded with the filtering structure and the supporting structure. Therefore, the sealing effect is good and the processing is convenient.

Further, the matching width of the first step and the third step and the supporting structure is 5-15 mm; the matching width of the second step, the outer wall of the lower joint and the filtering structure is 15-25 mm. Therefore, the sealing effect is good.

Further, the device also comprises an upper hole plate connected with the upper joint and a lower hole plate connected with the lower joint, wherein a raw gas cavity or a raw liquid cavity is formed between the upper hole plate and the lower hole plate. The object to be filtered in the raw gas cavity or the raw liquid cavity enters the gas purifying cavity or the liquid purifying cavity after being filtered by the filtering structure and is discharged through the opening of the upper joint. Therefore, the structure is simple, and the external filtration is realized.

Further, the supporting structure comprises an elastic net barrel with the porosity of 70-90% and the thickness of 0.4-0.8mm and a rigid framework for supporting the elastic net barrel. Therefore, the supporting effect is good.

Further, the rigid framework is arranged in the elastic net cylinder.

Further, the supporting structure comprises a supporting cylinder formed by winding a strip-shaped coiled material, the coiled material has a porous structure, and a seam formed after the coiled material is wound is not parallel to the central axis of the supporting cylinder. Therefore, the supporting effect is good.

Further, the filter structure comprises a membrane cylinder formed by winding a band-shaped porous filter material, and a seam formed by winding the porous filter material is not parallel to the central axis of the membrane cylinder. Thereby, the strength of the filter structure is high.

In order to achieve the above object, the present invention provides a filter structure and a method for manufacturing the filter structure, comprising:

the filter structure comprises a membrane cylinder formed by winding a band-shaped porous filter material, and a seam formed after the porous filter material is wound is not parallel to the central shaft of the membrane cylinder.

When the filtering structure bears internal and external pressure, the maximum main stress of the filtering structure is vertical to the central axis of the filtering structure and acts on each circular section; in the traditional straight seam filtering structure (namely, the seam is parallel to the central axis of the filtering structure), the seam can directly bear the maximum main stress, and the requirement on the strength of the seam is high. When the seam not with when the center pin of a membrane section of thick bamboo is parallel, the stress that seam department mainly bore is the component of principal stress, radial stress and axial stress promptly, and two kinds of stress value obviously are less than the principal stress of transversal joint filtration, consequently, under same operating pressure and same pipe diameter, the utility model discloses a filtration thickness can show the reduction, and the porosity can show the promotion to promote effective filtration area, promote blowback deashing effect and filtration efficiency.

Further, the porous filter material is mainly composed of a powder sintered metal porous material. Therefore, the porous filtering material made of the metal material is more convenient for spiral forming.

Furthermore, the porous filtering material is a foldable flexible metal film with the thickness less than or equal to 1500 microns. Thereby, the spiral forming is facilitated.

Furthermore, the central line of the porous filter material is in a spiral line shape after being wound. Under the condition of the same material, the rigidity of the spiral forming film cylinder is better, and the stress borne by the seam can be obviously reduced. Meanwhile, compared with a straight seam forming process, the spiral forming film barrel is more beneficial to ensuring the shape and position tolerance sizes of roundness, straightness and the like, and is beneficial to improving the strength of the filtering structure.

Further, the spiral line is a cylindrical spiral line; therefore, the diameters of all parts of the membrane cylinder are the same, and the filtration process is convenient to control.

Further, the helix angle α of the helix is 50-75 degrees, under the condition that the diameters of the film cylinders are the same, the larger the helix angle is, the narrower the bandwidth of the required porous filtering material is, the synthetic stress borne by the joint is reduced, but the butt joint length of the film cylinders with the same length is increased, the production efficiency is reduced, when the helix is a cylindrical helix, and when the helix angle α of the helix is 50-75 degrees, the synthetic stress borne by the joint is 60-85% of the main stress of the straight slit film cylinder, and the higher production efficiency can be kept.

Furthermore, the two long sides of the porous filter material are not overlapped after being wound, and the distance between the two long sides is 1-3 mm. Because the porous filtering material is very thin, if a long-edge contact welding mode is adopted, the two long edges are easily overlapped when being wound, and if the two long edges of the porous filtering material are overlapped when being wound, the diameter of the final film cylinder is larger and larger, and the two ends are not easy to seal and fix. If the winding time interval of the two long sides of the porous filtering material is too large, the filtering area is excessively reduced, and the filtering efficiency is influenced.

Furthermore, a welding rod for connecting the two long sides is arranged at the butt joint of the two long sides of the porous filtering material; after winding, the welding rod is located inside the film tube. Since the porous filter material is thin, if the porous filter material is directly spirally formed along itself, it is difficult to maintain the cylindrical shape. Therefore, when the welding rod is arranged, the welding rod can be directly spirally formed without the help of a spiral forming grinding tool, and the working procedure is saved. And the welding rod can be uniformly distributed in the film barrel after the spiral forming, the film barrel can be effectively supported, and the deformation of the film barrel is prevented, so that the film barrel spirally formed by using the welding rod can be directly used as a filter element, a supporting structure is not required to be arranged in or outside the film barrel, the weight of the filter element is obviously reduced, and the filtering area of the film barrel is reserved to the maximum extent. When the welding rod is arranged on the inner side of the film tube, the welding rod does not obstruct the butt joint of the two long sides during the winding process.

Further, the contact width of the welding rod and each long side of the porous filtering material is 3-6 mm. Therefore, the binding force is strong, the strength is high, the shape stability of the obtained film cylinder is good, and the influence of the welding rod on the filtering area is small.

Furthermore, an adhesive tape or a welding rod for connecting the two long sides is arranged at the butt joint of the two long sides; after winding, the tape or bead is located on the outside of the film roll. When using a spiral forming die, such as a cylindrical support, it is also possible to fix the two long sides at once after winding, using welding or adhesive tape outside the film tube. When the adhesive tape is used, any one of the above-described support structures is preferably provided in the film tube for support.

Further, the contact width of the adhesive tape and each long side of the porous filter material is 5-9 mm. Therefore, the binding force is strong and the strength is high.

The preparation method of the filter structure comprises the step of winding the porous filter material into a film cylinder, wherein a seam formed after the porous filter material is wound is not parallel to the central axis of the film cylinder.

Further, welding a welding rod on the inner side of one long side of the porous filtering material before winding, and welding and fixing the porous filtering material after winding along the porous filtering material to obtain the membrane cylinder.

And further, the winding is to wind the porous filter material along the outer wall of the cylindrical support body, then use adhesive tape for bonding and fixing or welding rod for welding and fixing, and take down the cylindrical support body to obtain the membrane cylinder.

Further, the welding is resistance welding. Therefore, the processing is convenient, and the strength is high.

In order to achieve the above object, the present invention provides a first filter element, which comprises:

the filter element comprises a filter structure and a support structure for supporting the filter structure, wherein the filter structure comprises a membrane cylinder formed by winding a strip-shaped porous filter material, and a seam formed by winding the porous filter material is not parallel to the central axis of the membrane cylinder; the supporting structure comprises a supporting cylinder formed by winding a strip-shaped coiled material, the coiled material is provided with a porous structure, and a seam formed after the coiled material is wound is not parallel to the central shaft of the supporting cylinder.

Furthermore, the central line of the porous filter material is in a spiral line shape after being wound; the central line of the coiled material is in a spiral line shape after being coiled.

Further, the coiled material is rectangular; the porous filter material is rectangular.

Further, the spiral line is a cylindrical spiral line.

Further, the helix angle α of the helix is 50-75 °.

Furthermore, the two long sides of the porous filter material are not overlapped after being wound, and the distance between the two long sides is 1-3 mm.

Furthermore, a welding rod for connecting the two long sides is arranged at the butt joint of the two long sides of the porous filtering material; after winding, the welding rod is located inside the film tube.

Further, the contact width of the welding rod and each long side of the porous filtering material is 3-6 mm.

Furthermore, an adhesive tape or a welding rod for connecting the two long sides is arranged at the butt joint of the two long sides; after winding, the tape or bead is located on the outside of the film roll.

In order to achieve the above object, the utility model provides a second kind of filter core as follows:

the filter element comprises a filter structure and a support structure for supporting the filter structure, wherein the filter structure comprises a membrane cylinder formed by winding a strip-shaped porous filter material, and a seam formed by winding the porous filter material is not parallel to the central axis of the membrane cylinder; the supporting structure comprises a rigid framework, wherein the rigid framework comprises a supporting ring with an outer diameter matched with the inner diameter of the filtering structure, and at least two supporting rods which are matched with the length of the filtering structure and connected with the supporting ring.

Furthermore, the porous filtering material is a foldable flexible metal film with the thickness less than or equal to 1500 microns.

Furthermore, the central line of the porous filter material is in a spiral line shape after being wound.

Furthermore, the porous filter material is rectangular, the spiral line is a cylindrical spiral line, and the spiral angle α of the spiral line is 50-75 degrees.

Further, the support bar is connected with the inner wall of the support ring.

Further, the support rings are distributed according to the interval of 150-; the diameter of the ring body of the support ring is 3-5 mm; the number of the support rods is at least three, and the support rods are distributed at equal intervals; the support rod is cylindrical.

In order to achieve the above object, the present invention provides a third filter element, which comprises:

the filter element comprises a filter structure and a support structure for supporting the filter structure, wherein the filter structure comprises a membrane cylinder formed by winding a strip-shaped porous filter material, and a seam formed by winding the porous filter material is not parallel to the central axis of the membrane cylinder; the supporting structure comprises an elastic net barrel and a rigid framework for supporting the elastic net barrel.

Furthermore, the porosity of the elastic net cylinder is 70-90%, and the thickness of the elastic net cylinder is 0.4-0.8 mm.

Further, the rigid framework is arranged in the elastic net cylinder.

Further, the rigid framework comprises a support ring with the outer diameter matched with the inner diameter of the filtering structure, and at least two support rods which are matched with the length of the filtering structure and connected with the support ring.

Further, the support bar is connected with the inner wall of the support ring.

The present invention will be further described with reference to the accompanying drawings and the detailed description. Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The accompanying drawings, which form a part of the disclosure, are included to assist in understanding the disclosure, and the description provided herein and the accompanying drawings, which are related thereto, are intended to explain the disclosure, but do not constitute an undue limitation on the disclosure. In the drawings:

fig. 1 is a schematic structural diagram of a membrane cartridge in the prior art.

FIG. 2 is a schematic structural view of the support body according to examples 1 to 4.

FIG. 3 is a schematic structural view of the rigid frameworks of examples 5-7.

Fig. 4 is a side view of fig. 3.

Fig. 5 is a schematic structural view of the support structure of embodiment 8.

FIG. 6 is a schematic structural view of the support structure according to examples 9 to 11.

FIG. 7 is a schematic structural view of the support structure according to examples 12 to 13.

Fig. 8 is a schematic structural view of the support structure of example 14.

FIG. 9 is a schematic structural view of the membrane cartridge of examples 15 to 17.

Fig. 10 is a side view of fig. 9.

Fig. 11 is a partial enlarged view at a1 in fig. 10.

FIG. 12 is a schematic structural view of a membrane cartridge according to example 18.

Fig. 13 is a side view of fig. 12.

Fig. 14 is a partial enlarged view at a2 in fig. 13.

Fig. 15 is a schematic structural view of a filter structure of example 19.

Fig. 16 is a side view of fig. 15.

Fig. 17 is a partial enlarged view at a3 in fig. 16.

Fig. 18 is a schematic view of a cartridge according to example 20.

Fig. 19 is a schematic view of the construction of a cartridge according to example 21.

Fig. 20 is a schematic view of the construction of a cartridge according to example 22.

Fig. 21 is a schematic view of the construction of a cartridge according to example 23.

Fig. 22 is a schematic view of a cartridge according to example 24.

Fig. 23 is a partial enlarged view at B1 in fig. 18.

Fig. 24 is a partial enlarged view at C1 in fig. 18.

Fig. 25 is a partial enlarged view at B2 in fig. 19.

Fig. 26 is a partial enlarged view at C2 in fig. 19.

Fig. 27 is a partial enlarged view at B3 in fig. 20.

Fig. 28 is a partial enlarged view at C3 in fig. 20.

Fig. 29 is a partial enlarged view at B4 in fig. 21.

Fig. 30 is a partial enlarged view at C4 in fig. 21.

Fig. 31 is a partial enlarged view at B5 in fig. 22.

Fig. 32 is a partial enlarged view at C5 in fig. 22.

The relevant references in the above figures are:

11: a coil stock;

1: a support cylinder;

2: a rigid skeleton;

21: a support ring;

22: a support bar;

3: an elastic net cylinder;

4: a membrane cartridge;

41: a porous filter material;

42: welding rods;

43: an adhesive tape;

5: an upper joint;

51: a first step;

52: a second step;

6: a lower joint;

61: and a third step.

Detailed Description

The present invention will be described more fully with reference to the accompanying drawings. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. Before the present invention is described with reference to the accompanying drawings, it is to be noted that:

the technical solutions and features provided in the present invention in each part including the following description may be combined with each other without conflict.

Moreover, references to embodiments of the invention in the following description are generally only to be considered as examples of the invention, and not as all embodiments. Therefore, all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention shall fall within the protection scope of the present invention.

With respect to the terms and units of the present invention. The terms "comprising," "having," and any variations thereof in the description and claims of this invention and the related sections are intended to cover non-exclusive inclusions.

Example 1

The support structure of the filter structure as shown in fig. 2 comprises a support cylinder 1 formed by winding a strip-shaped coil 11, wherein the coil 11 has a porous structure, the coil 11 is rectangular, the center line of the coil 11 is in a cylindrical spiral line shape after being wound, the thickness of the coil 11 is 0.6mm, the porosity is 50%, the spiral angle α of the spiral line is 75 degrees, two long sides of the coil 11 are formed by contact welding after being wound, the welding width is 3mm, and when the spiral angle α is 75 degrees and the middle diameter of the support cylinder 1 is 126mm, the required width of the coil 11 is 102.39 mm.

Example 2

The support structure of the filter structure as shown in fig. 2 comprises a support cylinder 1 formed by winding a strip-shaped coil 11, wherein the coil 11 has a porous structure, the coil 11 is rectangular, the center line of the coil 11 is in a cylindrical spiral line shape after being wound, the thickness of the coil 11 is 0.8mm, the porosity is 70%, the spiral angle α of the spiral line is 60 degrees, two long sides of the coil 11 are formed by contact welding after being wound, the welding width is 3mm, and when the spiral angle α is 60 degrees and the middle diameter of the support cylinder 1 is 126mm, the required width of the coil 11 is 197.82 mm.

Example 3

The support structure of the filter structure as shown in fig. 2 comprises a support tube 1 formed by winding a strip-shaped coil 11, wherein the coil 11 has a porous structure, the coil 11 is rectangular, the center line of the coil 11 is in a cylindrical spiral line shape after being wound, the thickness of the coil 11 is 1mm, the porosity is 80%, the spiral angle α of the spiral line is 50 degrees, two long sides of the coil 11 are in contact welding forming after being wound, the welding width is 3mm, and when the spiral angle α is 50 degrees and the middle diameter of the support tube 1 is 126mm, the width of the required coil 11 is 254.31 mm.

Example 4

The support structure of the filter structure as shown in fig. 2 includes a support tube 1 formed by winding a strip-shaped coil 11, the coil 11 has a porous structure, the coil 11 is rectangular, a center line of the coil 11 is in a cylindrical spiral line shape after being wound, a thickness of the coil 11 is 0.8mm, a porosity is 70%, a spiral angle α of the spiral line is 60 degrees, two long sides of the coil 11 are bonded by using an adhesive tape after being wound, and when the spiral angle α is 60 degrees and a middle diameter of the support tube 1 is 126mm, a width of the required coil 11 is 197.82 mm.

Example 5

The support structure of the filtering structure shown in fig. 3-4 comprises a rigid skeleton 2, wherein the rigid skeleton 2 comprises a support ring 21 with an outer diameter matched with the inner diameter of the filtering structure, and at least two support rods 22 with a length matched with the length of the filtering structure and connected with the support ring 21; the support bar 22 is connected to the inner wall of the support ring 21. The support rings 21 are distributed at a pitch of 150 mm. The diameter of the ring body of the support ring 21 is 3 mm. The support bars 22 are distributed at intervals of 20 mm. The support rod 22 is cylindrical and has a diameter of 4 mm.

Example 6

The support structure of the filtering structure shown in fig. 3-4 comprises a rigid skeleton 2, wherein the rigid skeleton 2 comprises a support ring 21 with an outer diameter matched with the inner diameter of the filtering structure, and at least two support rods 22 with a length matched with the length of the filtering structure and connected with the support ring 21; the support bar 22 is connected to the inner wall of the support ring 21. The support rings 21 are distributed at intervals of 170 mm. The diameter of the ring body of the support ring 21 is 4 mm. The support bars 22 are distributed at a pitch of 25 mm. The support rod 22 is cylindrical and has a diameter of 4 mm.

Example 7

The support structure of the filtering structure shown in fig. 3-4 comprises a rigid skeleton 2, wherein the rigid skeleton 2 comprises a support ring 21 with an outer diameter matched with the inner diameter of the filtering structure, and at least two support rods 22 with a length matched with the length of the filtering structure and connected with the support ring 21; the support bar 22 is connected to the inner wall of the support ring 21. The support rings 21 are distributed at a pitch of 200 mm. The diameter of the ring body of the support ring 21 is 5 mm. The support bars 22 are distributed at intervals of 30 mm. The support rod 22 is cylindrical and has a diameter of 4 mm.

Example 8

The supporting structure of the filtering structure shown in fig. 5 comprises a rigid framework 2, wherein the rigid framework 2 comprises a supporting ring 21 with an outer diameter matched with the inner diameter of the filtering structure, and at least two supporting rods 22 with a length matched with the length of the filtering structure and connected with the supporting ring 21; the support bar 22 is connected to the inner wall of the support ring 21. The support rings 21 are distributed at a pitch of 200 mm. The diameter of the ring body of the support ring 21 is 5 mm. The support bars 22 are distributed at intervals of 30 mm. The support rod 22 is cylindrical and has a diameter of 4 mm.

The bearing structure is still including locating 2 outside supporting cylinder 1 of rigid frame, supporting cylinder 1 is formed by banding coiled material 11 convolutes, coiled material 11 has porous structure, be cylindrical helix shape after 11 central lines of coiled material convolute, the thickness of coiled material 11 is 0.6mm, and the porosity is 50%, and the width is 102.39mm the helix angle α of helix is 75.

Example 9

The support structure of the filter structure shown in fig. 6 comprises a rigid support layer and a flexible support layer, wherein the rigid support layer is arranged inside the flexible support layer; the support structure is arranged inside the filter structure.

The elastic supporting layer comprises an elastic net cylinder 3 with the porosity of 70% and the thickness of 0.4 mm; the elastic net barrel 3 is a net barrel made of a woven net.

The rigid supporting layer comprises a rigid framework 2, and the rigid framework 2 comprises a supporting ring 21 with the outer diameter matched with the inner diameter of the filtering structure and at least two supporting rods 22 with the length matched with the length of the filtering structure and connected with the supporting ring 21; the support bar 22 is connected to the inner wall of the support ring 21. The support rings 21 are distributed at a pitch of 200 mm. The diameter of the ring body of the support ring 21 is 5 mm. The support bars 22 are distributed at intervals of 30 mm. The support rod 22 is cylindrical and has a diameter of 4 mm.

Example 10

The elastic supporting layer comprises an elastic net cylinder 3 with the porosity of 80% and the thickness of 0.6 mm; the elastic net cylinder 3 is a net cylinder made of a cutting and pulling net.

Example 11

The elastic supporting layer comprises an elastic net cylinder 3 with the porosity of 90% and the thickness of 0.8 mm; the elastic net barrel 3 is a net barrel made of a woven net.

Example 12

The supporting structure of the filtering structure shown in fig. 7 comprises an elastic net cylinder 3 with a porosity of 80% and a thickness of 0.6, an upper joint connected with the head of the elastic net cylinder 3, and a lower joint connected with the tail of the elastic net cylinder 3. The upper joint 5 is provided with a first step 51 matched with the inner wall of the head of the elastic net cylinder 3 and a second step 52 matched with the inner wall of the head of the filtering structure; the lower joint 6 is provided with a third step 61 matched with the inner wall of the tail part of the elastic net cylinder 3, and the outer wall of the lower joint 6 is matched with the inner wall of the tail part of the filtering structure. The upper joint 5 is welded with the elastic net barrel 3; the lower joint 6 is welded with the elastic net barrel 3. The matching width of the first step 51 and the third step 61 with the elastic net cylinder 3 is 10 mm. The elastic net cylinder 3 is a net cylinder made of a cutting and pulling net.

Example 13

The supporting structure of the filtering structure shown in fig. 7 comprises an elastic net cylinder 3 with a porosity of 90% and a thickness of 0.8, an upper joint connected with the head of the elastic net cylinder 3, and a lower joint connected with the tail of the elastic net cylinder 3. The upper joint 5 is provided with a first step 51 matched with the inner wall of the head of the elastic net cylinder 3 and a second step 52 matched with the inner wall of the head of the filtering structure; the lower joint 6 is provided with a third step 61 matched with the inner wall of the tail part of the elastic net cylinder 3, and the outer wall of the lower joint 6 is matched with the inner wall of the tail part of the filtering structure. The upper joint 5 is welded with the elastic net barrel 3; the lower joint 6 is welded with the elastic net barrel 3. The matching width of the first step 51 and the third step 61 with the elastic net cylinder 3 is 10 mm. The elastic net cylinder 3 is a net cylinder made of a cutting and pulling net.

Example 14

The supporting structure of the filtering structure shown in fig. 8 comprises an elastic net cylinder 3 with a porosity of 70% and a thickness of 0.4, an upper joint connected with the head of the elastic net cylinder 3, and a lower joint connected with the tail of the elastic net cylinder 3. The upper joint 5 is provided with a first step 51 matched with the inner wall of the head of the elastic net cylinder 3 and a second step 52 matched with the inner wall of the head of the filtering structure; the lower joint 6 is provided with a third step 61 matched with the inner wall of the tail part of the elastic net cylinder 3, and the outer wall of the lower joint 6 is matched with the inner wall of the tail part of the filtering structure. The upper joint 5 is welded with the elastic net barrel 3; the lower joint 6 is welded with the elastic net barrel 3. The matching width of the first step 51 and the third step 61 with the elastic net cylinder 3 is 10 mm. The elastic net cylinder 3 is a net cylinder made of a cutting and pulling net.

The elastic net drum 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, the center line of the coil material 11 is in the shape of a cylindrical spiral line after being wound, the helix angle α of the spiral line is 75 degrees, two long sides of the coil material 11 are in contact welding forming after being wound, the welding width is 3mm, and when the helix angle α is 75 degrees and the middle diameter of the elastic net drum 3 is 126mm, the required width of the coil material 11 is 102.39 mm.

Example 15

The filter structure shown in fig. 9 to 11 includes a membrane cartridge 4 formed by winding a band-shaped porous filter material 41, the porous filter material 41 is rectangular, the center line of the porous filter material 41 is in the shape of a cylindrical spiral line after being wound, the helix angle α of the spiral line is 50 °, the porous filter material 41 is mainly made of a powder sintered metal porous material, and is a flexible metal thin film having a thickness of 1500 μm and being foldable, and when the helix angle α is 50 °, the middle diameter of the membrane cartridge 4 is 135mm, the width of the porous filter material 41 is 272.14 mm.

The two long sides of the porous filter material 41 are not overlapped after being wound, the distance is 2mm, and a welding rod 42 for connecting the two long sides is arranged at the butt joint position of the two long sides of the porous filter material 41; after winding, the welding rod 42 is positioned inside the film tube 4; the contact width of the welding rod 42 with each long side of the porous filter material 41 is 12 mm.

Example 16

The filter structure shown in fig. 9 to 11 includes a membrane cartridge 4 formed by winding a band-shaped porous filter material 41, the porous filter material 41 is rectangular, the center line of the porous filter material 41 is in the shape of a cylindrical spiral line after being wound, the helix angle α of the spiral line is 55 °, the porous filter material 41 is mainly made of a powder sintered metal porous material, and is a flexible metal thin film having a thickness of 1000 μm and being foldable, and when the helix angle α is 55 °, the middle diameter of the membrane cartridge 4 is 135mm, the width of the porous filter material 41 is 242.89 mm.

The two long sides of the porous filter material 41 are not overlapped after being wound, the distance is 2mm, and a welding rod 42 for connecting the two long sides is arranged at the butt joint position of the two long sides of the porous filter material 41; after winding, the welding rod 42 is positioned inside the film tube 4; the contact width of the welding rod 42 with each long side of the porous filter material 41 was 10 mm.

Example 17

The filter structure shown in fig. 9 to 11 includes a membrane cartridge 4 formed by winding a band-shaped porous filter material 41, the porous filter material 41 is rectangular, the center line of the porous filter material 41 is in the shape of a cylindrical spiral line after being wound, the helix angle α of the spiral line is 60 degrees, the porous filter material 41 is mainly made of a powder sintered metal porous material, and is a foldable flexible metal thin film having a thickness of 200 micrometers, and when the helix angle α is 60 degrees and the middle diameter of the membrane cartridge 4 is 135mm, the width of the required porous filter material 41 is 211.95 mm.

The two long sides of the porous filter material 41 are not overlapped after being wound, the distance is 2mm, and a welding rod 42 for connecting the two long sides is arranged at the butt joint position of the two long sides of the porous filter material 41; after winding, the welding rod 42 is positioned inside the film tube 4; the contact width of the welding rod 42 with each long side of the porous filter material 41 was 9 mm.

The membrane cartridges 4 of examples 15-17 were prepared by: before winding, a welding rod 42 is welded on the inner side of one long side of the porous filter material 41, then the porous filter material 41 is wound into a cylindrical shape along the porous filter material, and then the welding rod 42 and the other long side are resistance-welded to obtain the film cylinder 4.

Example 18

The filter structure shown in fig. 12 to 14 includes a membrane cartridge 4 formed by winding a band-shaped porous filter material 41, the porous filter material 41 is rectangular, the center line of the porous filter material 41 is in the shape of a cylindrical spiral line after being wound, the helix angle α of the spiral line is 70 degrees, the porous filter material 41 is mainly made of a powder sintered metal porous material, and is a foldable flexible metal thin film with a thickness of 50 micrometers, and when the helix angle α is 70 degrees and the middle diameter of the membrane cartridge 4 is 135mm, the width of the required porous filter material 41 is 144.97 mm.

The two long sides of the porous filter material 41 are not overlapped after being wound, the distance is 2mm, and a welding rod 42 for connecting the two long sides is arranged at the butt joint position of the two long sides of the porous filter material 41; after winding, the welding rod 42 is located outside the filter structure; the contact width of the welding rod 42 with each long side of the porous filter material 41 was 8 mm.

The preparation method of the membrane cartridge 4 of example 18 is as follows: and winding the porous filter material 41 into a cylindrical shape along the outer wall of the cylindrical support body, fixing two long sides by adopting a welding rod 42 in a resistance welding mode after winding, and taking down the cylindrical support body to obtain the membrane cylinder 4.

Example 19

The filter structure shown in fig. 15 to 17 includes a membrane cartridge 4 formed by winding a band-shaped porous filter material 41, the porous filter material 41 is rectangular, the center line of the porous filter material 41 is in the shape of a cylindrical spiral line after being wound, the helix angle α of the spiral line is 75 °, the porous filter material 41 is mainly made of a powder sintered metal porous material, and is a foldable flexible metal thin film with a thickness of 20 μm, and when the helix angle α is 75 ° and the middle diameter of the membrane cartridge 4 is 135mm, the width of the porous filter material 41 is 109.79 mm.

The two long sides of the porous filter material 41 are not overlapped after being wound, the distance is 2mm, and the joint of the two long sides of the porous filter material 41 is provided with an adhesive tape 43 for connecting the two long sides; after winding, the tape 43 is located on the outside of the filter structure; the contact width of the adhesive tape 43 with each of the long sides of the porous filter material 41 was 10 mm.

The preparation method of the membrane cartridge 4 of example 19 is as follows: and winding the porous filter material 41 into a cylindrical shape along the outer wall of the cylindrical support body, adhering and fixing the two long sides by using an adhesive tape 43 after winding, and taking down the cylindrical support body to obtain the membrane cylinder 4.

Example 20

A filter cartridge as shown in fig. 18, comprising a filter structure and a support structure supporting the filter structure, wherein the filter structure is the filter structure of embodiment 15, and the support structure is the support structure of the filter structure of embodiment 6.

Example 21

A filter cartridge as shown in fig. 19, comprising a filter structure and a support structure supporting the filter structure, wherein the filter structure is the filter structure of embodiment 16, and the support structure is the support structure of the filter structure of embodiment 13.

Example 22

A filter cartridge as shown in fig. 20, comprising a filter structure and a support structure supporting the filter structure, wherein the filter structure is the filter structure of embodiment 17, and the support structure is the support structure of the filter structure of embodiment 3.

Example 23

A filter cartridge as shown in fig. 21, comprising a filter structure and a support structure supporting the filter structure, wherein the filter structure is the filter structure of embodiment 18, and the support structure is the support structure of the filter structure of embodiment 10.

Example 24

A filter cartridge as shown in fig. 22, comprising a filter structure and a support structure supporting the filter structure, wherein the filter structure is the filter structure of embodiment 19, and the support structure is the support structure of the filter structure of embodiment 8.

Example 25

A filter cartridge comprising a filter structure and a support structure supporting the filter structure, wherein the filter structure is the filter structure of example 16 and the support structure is the support structure of the filter structure of example 12.

As shown in fig. 18 to 32, the filter device to which the cartridge of one of examples 20 to 25 is applied has the following construction: the inner side of the filter element is provided with a clean air cavity or a clean liquid cavity; the support structure is located inside the filter structure; the sealing structure comprises an upper joint 5 connected with the head parts of the filtering structure and the supporting structure and a lower joint 6 connected with the tail parts of the filtering structure and the supporting structure; the upper connector 5 is provided with an opening communicated with the interior of the filter element, a first step 51 matched with the inner wall of the supporting structure and a second step 52 matched with the inner wall of the filtering structure; the lower joint 6 is closed and comprises a third step 61 which is matched with the inner wall of the supporting structure, and the inner wall of the filtering structure is matched with the outer wall of the lower joint 6. The upper joint 5 is welded with the filtering structure and the supporting structure; the lower joint 6 is welded to the filter structure and the support structure.

The matching width of the first step 51 and the third step 61 with the support structure is 10 mm; the width of the second step 52 and the outer wall of the lower joint 6 matched with the filter structure is 20 mm.

The device also comprises an upper orifice plate connected with the upper joint 5 and a lower orifice plate connected with the lower joint 6, wherein a raw gas cavity or a raw liquid cavity is formed between the upper orifice plate and the lower orifice plate.

The contents of the present invention have been explained above. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. Based on the above-mentioned contents of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

Claims

1. Filtration, its characterized in that: the filter structure comprises a membrane cylinder (4) formed by winding a band-shaped porous filter material (41), wherein a seam formed after winding the porous filter material (41) is not parallel to the central axis of the membrane cylinder (4).

2. The filtration structure of claim 1, wherein: the porous filter material (41) is mainly composed of a powder sintered metal porous material.

3. The filtration structure of claim 2, wherein: the porous filtering material (41) is a foldable flexible metal film with the thickness less than or equal to 1500 microns.

4. The filtration structure of claim 1, wherein: the central line of the porous filter material (41) is in a spiral line shape after being wound.

5. The filtration structure of claim 4, wherein: the porous filter material (41) is rectangular.

6. A filter construction according to claim 4 or 5, wherein: the spiral line is a cylindrical spiral line.

7. The filter structure of claim 6, wherein said helix has a helix angle α of 50-75 °.

8. The filtration structure of claim 5, wherein: the two long sides of the porous filter material (41) are not overlapped after being wound, and the distance between the two long sides is 1-3 mm.

9. The filtration structure of claim 8, wherein: a welding rod (42) for connecting the two long sides is arranged at the butt joint of the two long sides of the porous filtering material (41); after winding, the welding rod (42) is positioned inside the film cylinder (4).

10. The filtration structure of claim 9, wherein: the contact width of the welding rod (42) and each long side of the porous filtering material (41) is 3-6 mm.