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CN-121988108-A - Gradient composite filter cartridge suitable for high-temperature and high-humidity environment and forming process thereof

CN121988108ACN 121988108 ACN121988108 ACN 121988108ACN-121988108-A

Abstract

The invention discloses a gradient composite filter cartridge suitable for high-temperature and high-humidity environment and a forming process thereof, belonging to the technical field of industrial filtration and dust removal, comprising an end cover, wherein the bottom end of the end cover is vertically fixedly connected with an upper framework, the bottom of going up the skeleton has lower skeleton along its axial sliding fit, the bottom fixedly connected with base of lower skeleton, the outside of going up skeleton and lower skeleton cladding has the compound filter material jointly. According to the invention, the upper framework and the lower framework which are in sliding connection are arranged between the end cover and the base, and the telescopic mechanism is matched, so that the temperature change can be responded accurately, the screw rod and the internal threaded pipe are driven to move relatively through the thermosensitive induction driving gear transmission of the spiral bimetallic strip, the total length of the framework is dynamically adjusted, the thermal expansion and contraction amount of the filter material is adapted, the problems of detachment and clearance caused by mismatch of thermal physical characteristics of the composite filter material and the rigid framework at high temperature are solved, the filter material is ensured to be always tightly attached to the surface of the framework, and the filtering efficiency and the ash removal effect are stably maintained.

Inventors

  • WANG DAOLONG
  • XU TING
  • Zhang Jiaoze
  • CAI LILI
  • ZHU XIAOFEI

Assignees

  • 华基环保(武汉)有限公司

Dates

Publication Date
20260508
Application Date
20260209

Claims (10)

  1. 1. The gradient composite filter cartridge suitable for the high-temperature and high-humidity environment comprises an end cover (1) and is characterized in that an upper framework (2) is vertically fixedly connected to the bottom end of the end cover (1), a lower framework (3) is slidably matched with the bottom end of the upper framework (2) along the axial direction of the upper framework, a base (4) is fixedly connected to the bottom end of the lower framework (3), and composite filter materials (5) are jointly coated on the outer sides of the upper framework (2) and the lower framework (3); the base (4) is provided with a telescopic mechanism (6), and the telescopic mechanism (6) is used for dynamically adjusting the integral length of the upper framework (2) and the lower framework (3) according to temperature change; The outer side of the top of the base (4) is provided with a collecting groove (7) along the circumferential direction, the bottom of the collecting groove (7) is uniformly provided with drain holes (8), and the drain holes (8) penetrate to the bottom of the base (4); An opening and closing mechanism (9) is arranged on the base (4), the opening and closing mechanism (9) is used for controlling the opening and closing of the drain hole (8), and the opening and closing mechanism (9) is linked with the pulse ash cleaning action; The middle position of the upper framework (2) is provided with a vibrating mechanism (10), the vibrating mechanism (10) is used for beating the inner wall of the upper framework (2) on the inner side of the composite filter material (5) to remove ash, and the vibrating mechanism (10) and the opening and closing mechanism (9) are arranged in a linkage mode.
  2. 2. The gradient composite filter cartridge suitable for high-temperature and high-humidity environments according to claim 1, wherein the telescopic mechanism (6) comprises a screw rod (606), an inner threaded pipe (607) and a rotating assembly, the inner threaded pipe (607) is uniformly and vertically fixedly connected to the inner bottom of the upper framework (2) along the circumferential direction, the screw rod (606) is respectively in threaded fit with the inner bottom of the corresponding inner threaded pipe (607), and the rotating assembly is arranged in the base (4) and is used for driving a plurality of groups of screw rods (606) to synchronously rotate.
  3. 3. The gradient composite filter cartridge suitable for high-temperature and high-humidity environment according to claim 2, wherein the rotating assembly comprises a mounting bin (601), a sleeve (602), a spiral bimetallic strip (603), a main gear (604) and a driven gear (605), the mounting bin (601) is arranged at the middle position inside the base (4), the sleeve (602) is vertically and rotatably mounted in the middle inside the mounting bin (601) through a bearing, the spiral bimetallic strip (603) is mounted between the outer side of the sleeve (602) and the inner wall of the mounting bin (601), the main gear (604) is sleeved at the bottom end of the outer side of the sleeve (602), the driven gears (605) are uniformly meshed and mounted on the outer side of the main gear (604) along the circumferential direction, and the tops of the groups of driven gears (605) are fixedly connected with the bottom ends of corresponding screws (606) respectively.
  4. 4. The gradient composite filter cartridge suitable for high-temperature and high-humidity environments according to claim 1 or 3, wherein the opening and closing mechanism (9) comprises a sliding rod (901), a sealing plate (902), a drainage plate (903) and a return spring (904), the sliding rod (901) is slidably arranged in the middle of the base (4) in a penetrating mode, the sealing plate (902) is horizontally and fixedly arranged at the bottom end of the sliding rod (901), the top of the sealing plate (902) is bonded with the bottom of the base (4) and is in sealing fit with the drain hole (8), the drainage plate (903) is fixedly arranged at the top of the sliding rod (901), the return spring (904) is arranged between the bottom end of the drainage plate (903) and the top of the base (4), and the sliding rod (901) movably penetrates through the return spring (904).
  5. 5. The gradient composite filter cartridge suitable for high-temperature and high-humidity environments as claimed in claim 4, wherein the bottom end of the base (4) is provided with a groove, the sealing plate (902) is embedded in the groove, and the bottom of the sealing plate (902) is arranged flush with the bottom of the base (4).
  6. 6. The gradient composite filter cartridge suitable for high temperature and high humidity environment according to claim 4, wherein the vibration mechanism (10) comprises a sleeve (1001), a guide block (1002), a double-spiral guide groove (1003), a cross rod (1004), a rubber strip (1005) and a raised strip (1006), the sleeve (1001) is fixed at the top end of the base (4), the sliding rod (901) movably penetrates through the inside of the sleeve (1001), the guide block (1002) is symmetrically fixed at the inner side of the sleeve (1001), the double-spiral guide groove (1003) is arranged at the outer side of the sliding rod (901), the guide block (1002) is in sliding fit with the double-spiral guide groove (1003), the top end of the sliding rod (901) extends to the inner top of the upper framework (2), the cross rod (1004) is circumferentially fixed at the outer side of the sliding rod (901), the rubber strip (1005) is fixed at one end of the cross rod (1004) far away from the sliding rod (901), the rubber strip (1005) is in contact with the inner wall of the upper framework (2), and the raised strip (1006) is uniformly arranged in the inner framework (1005) along the circumferential direction, and is matched with the rubber strip (1005).
  7. 7. The gradient composite filter cartridge suitable for high-temperature and high-humidity environment according to claim 1, wherein the composite filter material (5) comprises an ultrafine PTFE fiber layer (501), a glass fiber grid cloth layer (502), a medium denier aramid fiber layer (503) and a coarse denier aramid fiber layer (504) from inside to outside in sequence, the layers are compositely fixed through high-temperature hot melt adhesive, the overall porosity is gradually increased along the radial direction from inside to outside, and the outer sides of the ultrafine PTFE fiber layer (501), the glass fiber grid cloth layer (502), the medium denier aramid fiber layer (503) and the coarse denier aramid fiber layer (504) are immersed to form a hydrophobic layer.
  8. 8. The gradient composite filter cartridge suitable for high temperature and high humidity environment as claimed in claim 4, wherein the drainage plate (903) has a conical structure, and the surface of the drainage plate (903) is coated with a smooth coating.
  9. 9. The gradient composite filter cartridge suitable for the high-temperature and high-humidity environment according to claim 1, wherein the upper framework (2) and the lower framework (3) are of hollow metal frame structures, the top of the lower framework (3) is sleeved on the inner side of the bottom of the upper framework (2), and a wear-resistant coating is arranged at the sliding fit position of the upper framework and the lower framework.
  10. 10. A gradient composite filter cartridge forming process suitable for a high temperature and high humidity environment based on a gradient composite filter cartridge suitable for a high temperature and high humidity environment according to any one of claims 1 to 9, characterized by comprising the steps of: step 1, preparing a composite filter material (5), sequentially stacking an ultrafine PTFE fiber layer (501), a glass fiber grid cloth layer (502), a medium denier aramid fiber layer (503) and a heavy denier aramid fiber layer (504), pressing and fixing the layers through a high-temperature hot-melting composite process to form a gradient composite structure, and performing hydrophobic impregnation treatment on the outer sides of the layers to form a hydrophobic layer; Step 2, assembling the upper framework (2) and the lower framework (3), coating a wear-resistant coating at a sliding fit position between the inner side of the top of the lower framework (3) and the outer side of the bottom of the upper framework (2), sleeving the top of the lower framework (3) at the bottom of the upper framework (2), and ensuring smooth sliding; Step 3, installing a telescopic mechanism (6), namely sequentially assembling a spiral bimetallic strip (603), a sleeve (602), a main gear (604) and a driven gear (605) in an installation bin (601), and then fixing a screw rod (606) and the top of the driven gear (605) to complete threaded matching of the screw rod (606) and an internal threaded pipe (607); Step 4, assembling an opening and closing mechanism (9) and a vibrating mechanism (10), sequentially penetrating a sliding rod (901) through a base (4), a reset spring (904) and a sleeve (1001), fixing a drainage plate (903) at the top end of the sliding rod (901), fixing a sealing plate (902) at the bottom end, ensuring that the sealing plate (902) is embedded in a groove at the bottom end of the base (4) and is in sealing fit with a drain hole (8), and fixing the sleeve (1001) at the top end of the base (4), so that the guide block (1002) is in precise fit with a double-spiral guide groove (1003); And 5, fixing the composite filter material (5), coating the prepared composite filter material (5) on the outer sides of the upper framework (2) and the lower framework (3), and sealing and fixing the two ends of the composite filter material (5) with the end cover (1) and the base (4) through pressing rings respectively.

Description

Gradient composite filter cartridge suitable for high-temperature and high-humidity environment and forming process thereof Technical Field The invention relates to a gradient composite filter cartridge, in particular to a gradient composite filter cartridge suitable for a high-temperature and high-humidity environment, and also relates to a forming process, in particular to a gradient composite filter cartridge forming process suitable for a high-temperature and high-humidity environment, belonging to the technical field of industrial filtration and dust removal. Background In order to adapt to high-temperature and high-humidity environments, high-temperature resistant base materials such as aramid fibers, PTFE (polytetrafluoroethylene), glass fibers and the like are selected as the gradient composite filter material, but axial deformation still occurs due to mismatch of thermal physical characteristics of a thermal shrinkage and a metal framework in the high-temperature environment, and problems such as separation and gaps are easy to occur between the filter material and the rigid framework with fixed length, so that the outer surface of the filter material bulges, the degree of fit with the framework is reduced, and the filtering efficiency and the ash removal effect of the filter cylinder are greatly reduced. Meanwhile, condensed water is easy to form in the high-temperature moisture-containing gas in the filtering system, although a part of the existing gradient composite filter cylinder is provided with drainage micropores at the bottom end cover so as to realize the drainage of the condensed water, the existing gradient composite filter cylinder is limited by the design of micropores, the technical contradiction between drainage and filtering exists, if the micropores are smaller, moisture-containing dust in a high-humidity environment is extremely easy to adhere to and block the micropores, so that the condensed water cannot be timely drained, accumulated condensed water and dust are combined to form a mud cake, and the mud cake is adhered to the dust facing surface and the clean air surface of the gradient composite filter material, so that the hardening and the filtering resistance of the filter material are increased, and if the micropores are increased blindly, the blocking problem can be relieved to a certain extent, the dust can be directly penetrated from the micropores, the filtering precision of the filter cylinder is reduced, the interception effect of the gradient composite filter material on the fine dust is destroyed, and the precision requirement of industrial dust removal cannot be met. The gradient composite filter cartridge suitable for the high-temperature and high-humidity environment and the forming process thereof are designed to optimize the problems. Disclosure of Invention The invention mainly aims to provide a gradient composite filter cartridge and a forming process thereof, which are suitable for high-temperature and high-humidity environments, an upper framework and a lower framework which are in sliding connection are arranged between an end cover and a base, a telescopic mechanism consisting of a mounting bin, a sleeve, a spiral bimetallic strip, a main gear, a driven gear, a screw and an internal threaded pipe is matched, the gradient composite filter cartridge can respond to temperature change accurately, the screw and the internal threaded pipe are driven to move relatively through the thermosensitive induction driving gear transmission of the spiral bimetallic strip, the total length of the framework is dynamically adjusted, the thermal expansion and contraction quantity of a filter material is adapted, the problems of detachment and clearance caused by unmatched thermal physical characteristics of the composite filter material and the rigid framework at high temperature are solved, the filter material is always and tightly attached to the surface of the framework, the filtering efficiency and the ash cleaning effect are stably maintained, a large-aperture drain hole is arranged at the bottom of a collecting tank, and an opening and closing mechanism consisting of a slide rod, a sealing plate, a drainage plate and a reset spring are matched, when the high-pressure pulse ash is removed, the sealing plate is controlled to automatically move downwards to remove the plugging of the drain hole, so that condensed water is rapidly discharged, after the pulse is finished, the reset spring drives the sealing plate to reset to plug the drain hole, the problems that the small-aperture drain hole is easy to be plugged by wet dust and accumulated liquid to form mud cakes are avoided, the defect that the large-aperture drain hole causes dust penetration and reduces the filtering precision is overcome, the hardening and the rising of filtering resistance of a filter material are effectively controlled, in addition, in the sliding rod moving downwards process, the vibrating mechan