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CN-224221007-U - Dust filter core structure

CN224221007UCN 224221007 UCN224221007 UCN 224221007UCN-224221007-U

Abstract

The utility model relates to a dust filter core structure, which comprises a filter screen, wherein the filter screen comprises at least two filter screen units, the filter screen units are formed by coiling a sintering screen, the at least two filter screen units are sequentially arranged along the axial direction, and a connecting ring made of rigid materials is fixedly connected between the adjacent filter screen units. The utility model provides a novel filter element structure, wherein a filter screen is arranged to be formed by sequentially connecting at least two filter screen units through a connecting ring made of rigid materials, so that the integral compressive strength is improved, the manufacturing process is simple, the cost is lower, and the integral weight is not obviously increased.

Inventors

  • XIN DANDAN
  • PENG XIAOFANG
  • LIN BAOKANG
  • CHEN JINGBO

Assignees

  • 浙江亚光科技股份有限公司

Dates

Publication Date
20260512
Application Date
20250603

Claims (6)

  1. 1. The dust filter core structure comprises a filter screen and is characterized in that the filter screen comprises at least two filter screen units (1), the filter screen units (1) are formed by coiling a sintering net, the at least two filter screen units (1) are sequentially arranged along the axial direction, and a connecting ring (2) is fixedly connected between every two adjacent filter screen units (1).
  2. 2. The dust filter core structure of claim 1, wherein the filter screen unit (1) is fixedly connected with the connecting ring (2) in a welding way.
  3. 3. The dust filter core structure of claim 2, wherein the middle part of the outer circumference of the connecting ring (2) is provided with a convex ring part (201), a matching part (202) with the outer diameter smaller than that of the convex ring part (201) is formed on the upper part and the lower part of the convex ring part (201), the filter screen unit (1) is sleeved outside the matching part (202) and the end face is abutted against the end face of the convex ring part (201), and the inner diameter of the filter screen unit (1) is matched with the matching part (202) to enable the inner circumference of the filter screen unit (1) to be attached to the outer circumference of the matching part (202).
  4. 4. A dust filter cartridge structure as claimed in claim 3, characterized in that the outer diameter of the filter screen unit (1) is adapted to the outer diameter of the collar portion (201).
  5. 5. The dust filter core structure according to any one of claims 1 to 4, wherein the connecting ring (2) is made of metal.
  6. 6. The dust filter core structure of claim 1, wherein an upper end ring (3) and a lower end ring (4) are fixed at two ends of the filter screen.

Description

Dust filter core structure Technical Field The utility model relates to a dust filter element structure. Background The inventor's prior patent CN202221200028.6 discloses a filter, including a vertical tank body, a filter core and a top cover, wherein the top cover is matched with the cover and is arranged at the upper port of the tank body, the top cover is provided with a liquid inlet, an air outlet and a pressure gauge port, the bottom of the tank body is provided with a liquid outlet, the filter core is detachably arranged in the tank body, the dust filter core structure for the filter shown in FIG. 1 is mainly filtered by a filter screen 1', the filter screen 1 'is formed by adopting a sintering net with a longer length through rolling circles, and the two ends of the filter screen 1' are fixedly provided with an upper end ring 2 'and a lower end ring 3'. The dust filter element structure has the following problems that when excessive dust attached to the filter screen 1' is not purged in time or the filter element selection precision is improper, the filter screen is easy to be unstable under a large vacuum suction force, the middle part of the filter screen is shrunken, the strength is affected, and the sintering screen is damaged when the strength is seriously affected, so that the whole production is affected. At present, the problems are generally solved by adopting two modes, namely ①, arranging a metal bracket on the inner periphery of the filter screen 1', forming a supporting effect on the filter screen 1', increasing the compressive strength, avoiding the collapse of the filter screen 1', and the mode has higher technological requirements on the rolling forming of the filter screen 1', otherwise, the filter screen 1 'and the metal bracket cannot form good bonding, ②, increasing the thickness of the filter screen 1', thereby increasing the compressive strength of the filter screen 1', and then, the greater the thickness of the filter screen 1', the higher the technological difficulty of the rolling forming and the higher the processing cost, in addition, the weight of the whole filter element is greatly increased, and obvious adverse effects are formed on the subsequent replacement of the filter. Disclosure of utility model The utility model aims to overcome the defects and the shortcomings of the prior art and provides a dust filter element structure. The dust filter core structure comprises a filter screen, wherein the filter screen comprises at least two filter screen units, the filter screen units are formed by coiling a sintering net, the at least two filter screen units are sequentially arranged along the axial direction, and a connecting ring made of rigid materials is fixedly connected between every two adjacent filter screen units. The filter screen unit is fixedly connected with the connecting ring in a welding way. The middle part of the periphery of the connecting ring is provided with a convex ring part, a matching part with the outer diameter smaller than that of the convex ring part is formed up and down of the convex ring part, the filter screen unit is sleeved outside the matching part, the end face of the filter screen unit is abutted to the end face of the convex ring part, and the inner diameter of the filter screen unit is matched with the matching part to enable the inner periphery of the filter screen unit to be attached to the periphery of the matching part. The external diameter of filter screen unit and bulge loop portion's external diameter adaptation. The connecting ring is made of metal. An upper end ring and a lower end ring are fixed at two ends of the filter screen. The novel filter element structure has the beneficial effects that the filter screen is arranged to be formed by sequentially connecting at least two filter screen units through the connecting rings made of rigid materials, so that the integral compressive strength is improved, the manufacturing process is simple, the cost is low, and the integral weight is not obviously increased. Drawings In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that it is within the scope of the utility model to one skilled in the art to obtain other drawings from these drawings without inventive faculty. FIG. 1 is a schematic diagram of a dust filter in the prior art; in the figure, a filter screen-1 ', an upper end ring-2 ', a lower end ring-3 '; FIG. 2 is a schematic diagram of an embodiment of the present utility model; FIG. 3 is an enlarged schematic view of portion A of FIG. 2; In the figure, a filter screen unit-1, a connecting ring-2, a convex ring part-201, a matching part-202, an upper end ring-3 and a lower end ring-4. Det