Double-helix flow guide framework for folding filter cartridge

Abstract

The utility model discloses a double-helix flow guide framework for a folding filter drum. The double-helix flow guide framework comprises a filter paper drum and a flow guide supporting mechanism, the upper end of the filter paper cylinder is fixedly sleeved with an upper end cover, the lower end of the filter paper cylinder is fixedly sleeved with a lower end cover, and the outer side of the middle of the filter paper cylinder is fixedly sleeved with evenly-distributed fixing rings; the flow guide supporting mechanism comprises an upper inner ring, spiral bands, vertical ribs and a lower inner ring, the vertical ribs which are uniformly distributed are arranged between the upper inner ring and the lower inner ring, the two spiral bands which are uniformly distributed are fixedly connected between the vertical ribs, and the filter paper cylinder is fixedly arranged outside a whole formed by the upper inner ring, the spiral bands, the vertical ribs and the lower inner ring in a sleeving mode; the outer side face of the upper inner ring, the outer side face of the vertical rib and the outer side face of the lower inner ring are all smooth surfaces, the double-spiral flow guide framework for the folding filter cylinder is of a structure that the vertical rib is matched with the double-spiral belt, the circulation area is extremely excellent, the ash removal efficiency of ash removal airflow is improved, and meanwhile the longitudinal stability and the transverse stability of the filter cylinder are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of folding filter cartridge, concretely to a double helix flow guide framework for folding filter cartridge. BACKGROUND

[0002] As the core component of the dust removal and filtration system, the folding filter cartridge plays a vital role in reducing emissions, material collection and recycling, and ensuring production safety in multiple dimensions. Specifically, the folding filter cartridge can effectively reduce dust and particle emissions, thereby reducing environmental pollution and ensuring the safety of production equipment and workers.

[0003] When the folding filter cartridge is performing pulse cleaning, there is often a phenomenon of uneven peak value on the side wall. Because the flow rate of compressed air is very fast, the bottom of the filter cartridge framework is the part where most of the compressed air hits, thereby affecting the actual effect of dust cleaning. From the perspective of optimizing dust cleaning effect, the framework can be improved to achieve the effect of optimizing dust cleaning airflow distribution. Therefore, we propose a double helix flow guide framework for folding filter cartridge. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a double helix flow guide framework for folding filter cartridge. The framework has vertical ribs and double helix belt structures, has excellent flow area, improves the dust cleaning efficiency of dust cleaning airflow, and improves the longitudinal and lateral stability of the filter cartridge, which can effectively solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a double helix flow guide framework for folding filter cartridge, comprising a filter paper cylinder and a flow guide support mechanism.

[0006] The filter paper cylinder has an upper end cover fixedly sleeved on the upper end, a lower end cover fixedly sleeved on the lower end of the filter paper cylinder, and evenly distributed fixed rings fixedly sleeved on the outer side of the middle part of the filter paper cylinder.

[0007] The flow guide support mechanism comprises an upper inner ring, a spiral belt, a vertical rib, and a lower inner ring. The upper inner ring and the lower inner ring are provided with evenly distributed vertical ribs therebetween, and two evenly distributed spiral belts are fixedly connected between the vertical ribs. The filter paper cylinder is fixedly sleeved outside the whole composed of the upper inner ring, the spiral belt, the vertical rib, and the lower inner ring. The framework has vertical ribs and double helix belt structures, has excellent flow area, improves the dust cleaning efficiency of dust cleaning airflow, and improves the longitudinal and lateral stability of the filter cartridge.

[0008] Further, the outer side surfaces of the upper inner ring, the vertical rib, and the lower inner ring are smooth surfaces, and the edges of the upper inner ring, the spiral belt, the vertical rib, and the lower inner ring are all provided with round corners, realizing a low-contact and low-wear structure.

[0009] Further, the cross section of the spiral band is an arc strip, and the width of the spiral band is increased from top to bottom, so as to reduce the loss of the upper middle spiral band structure to the blowing pressure.

[0010] Further, the pitch of the spiral band is decreased from top to bottom, and the number of turns of the spiral band is increased from top to bottom, so as to optimize the pressure distribution of the pulse blowing.

[0011] Further, the arc strip of the spiral band is curved towards the center line of the upper inner ring, and the included angle between the arc strip and the vertical rib is less than 90°, so as to optimize the pressure distribution of the pulse blowing and optimize the trajectory of the suction air flow.

[0012] Compared with the prior art, the utility model has the advantages that the double-spiral flow guide framework for the folding filter cartridge has the following advantages:

[0013] 1. The upper part of the spiral band has large pitch and few turns, and the lower part has small pitch and many turns, so as to optimize the pressure distribution of the pulse blowing, the width of the cross section of the spiral band is gradually increased from top to bottom, so as to reduce the loss of the upper middle spiral band to the blowing pressure, the concave arc cross section of the spiral band optimizes the pressure distribution of the pulse blowing and optimizes the trajectory of the suction air flow.

[0014] 2. While the spiral band guides the flow, the compressed air generates a reaction force on the spiral band, the arc strip of the spiral band is inclined, so that the reaction force is divided into longitudinal and transverse directions, the perpendicularity, longitudinal stability and transverse stability of the framework are all strengthened, and the problem of shaking of the filtering element due to a single support point is greatly alleviated.

[0015] 3. The structural design of the spiral band reduces the contact area of the filter material and the inside of the folding filter cartridge, increases the effective filtering area, reduces the resistance generated by the suction air flow passing through the framework, effectively avoids the abrasion caused by the contact friction between the filter material and the framework due to the air flow, and improves the dust removal efficiency of the dust removal air flow. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model;

[0017] Figure 2 It is a sectional view structural schematic view of the utility model;

[0018] Figure 3 It is a structural schematic view of the flow guide support mechanism of the utility model;

[0019] Figure 4 It is a left view structural schematic view of the flow guide support mechanism of the utility model;

[0020] Figure 5 It is a local cross section structural schematic view of the upper end of the flow guide support mechanism of the utility model;

[0021] Figure 6 It is partial sectional structure schematic view of lower end of the flow guide support mechanism of the utility model.

[0022] In the drawing: 1 filter paper tube, 2 fixed ring, 3 upper end cover, 4 lower end cover, 5 flow guide support mechanism, 51 upper inner ring, 52 spiral belt, 53 vertical rib, 54 lower inner ring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Please refer to Figures 1-6 The embodiment provides a technical scheme: a double-spiral flow guide framework for a folding filter cartridge, which comprises a filter paper tube 1 and a flow guide support mechanism 5.

[0025] The filter paper tube 1 is provided with an upper end cover 3 fixedly sleeved on the upper end, and is provided with a lower end cover 4 fixedly sleeved on the lower end, and is provided with uniformly distributed fixed rings 2 fixedly sleeved on the outer side of the middle part.

[0026] The guide support mechanism 5 comprises an upper inner ring 51, a spiral belt 52, vertical ribs 53 and a lower inner ring 54, the vertical ribs 53 are uniformly distributed between the upper inner ring 51 and the lower inner ring 54, the two spiral belts 52 are fixedly connected between the vertical ribs 53, the filter paper cylinder 1 is fixedly sleeved outside the whole composed of the upper inner ring 51, the spiral belt 52, the vertical ribs 53 and the lower inner ring 54, the outer side surface of the upper inner ring 51, the outer side surface of the vertical ribs 53 and the outer side surface of the lower inner ring 54 are smooth surfaces, the edges of the upper inner ring 51, the spiral belt 52, the vertical ribs 53 and the lower inner ring 54 are all provided with round corners, the cross section of the spiral belt 52 is an arc-shaped strip, the width of the spiral belt 52 increases from top to bottom, the pitch of the spiral belt 52 decreases from top to bottom, and at the same time, the number of turns of the spiral belt 52 increases from top to bottom, the arc-shaped strip of the spiral belt 52 bends towards the center line of the upper inner ring 51 and the included angle between the arc-shaped strip and the vertical ribs 53 is less than 90°, when the folding filter cartridge is used, compressed air enters the inside from the upper end cover 3 and is guided by the two spiral belts 52, so that the compressed air spirally flows downward, at the same time, the width of the spiral belt 52 increases from top to bottom, the inner cross section of the spiral belt 52 is conical, the taper surface contracts when the compressed air flows downward, so that the peak clipping and valley filling structure is realized, the spiral belt 52 is a side distance spiral, the pitch decreases from top to bottom, at the same time, the number of turns increases, so that the effect of the peak clipping and valley filling structure is further improved, the arc-shaped strip of the spiral belt 52 bends towards the center line of the upper inner ring 51 and the included angle between the arc-shaped strip and the vertical ribs 53 is less than 90°, so that the effect of the peak clipping and valley filling structure is further improved, and the guide effect can also be brought to the suction air flow, so that suction vortex is avoided in local positions, at the same time of the guide of the spiral belt 52, the compressed air generates a reaction force on the spiral belt 52, the arc-shaped strip of the spiral belt 52 is inclined, so that the reaction force is divided into longitudinal and transverse directions, so that the perpendicularity, longitudinal stability and transverse stability of the framework are all strengthened, and the problem of shaking of the filter element due to single support point is greatly relieved.

[0027] The working principle of the double helix flow guide framework for the folding filter cartridge is as follows: when the folding filter cartridge is assembled, the outer side surface of the upper inner ring 51, the outer side surface of the vertical rib 53 and the outer side surface of the lower inner ring 54 are all subjected to roughness treatment of Ra1.6, and the edges of the upper inner ring 51, the helical belt 52, the vertical rib 53 and the lower inner ring 54 are all subjected to round corner treatment, so that low contact and low wear are realized; when the double helix flow guide framework for the folding filter cartridge is put into use, compressed air enters the inside from the upper end cover 3 and is guided by the two helical belts 52, so that the compressed air spirally flows downward; meanwhile, the width of the helical belt 52 increases from top to bottom, the inner section of the helical belt 52 is conical, the conical surface shrinks when the compressed air flows downward, the peak clipping and valley filling structure is realized, the helical belt 52 is edge distance helix, the pitch decreases from top to bottom, meanwhile, the number of turns increases, so that the effect of the peak clipping and valley filling structure is further improved; the arc-shaped strips of the helical belt 52 are bent towards the center line of the upper inner ring 51 and the included angle between the arc-shaped strips and the vertical rib 53 is less than 90°, so that the effect of the peak clipping and valley filling structure is further improved, the flow guiding effect can also be brought to the suction air flow, the suction vortex is avoided to be formed at a local position, while the helical belt 52 is guided, the compressed air generates a reaction force on the helical belt 52, the arc-shaped strips of the helical belt 52 are obliquely arranged, so that the reaction force is divided into two directions of longitudinal and transverse directions, the perpendicularity, longitudinal stability and transverse stability of the framework are all strengthened, and the problem that the filtering element shakes due to a single supporting point is greatly relieved.

[0028] The above only describes the embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion according to the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, are all included in the patent protection range of the utility model.

Claims

1. A double-helix flow guide frame for a pleated filter cartridge, characterized in that: Includes filter paper tube (1) and flow guide support mechanism (5); Filter paper tube (1): The upper end is fixedly fitted with an upper end cap (3), the lower end of the filter paper tube (1) is fixedly fitted with a lower end cap (4), and the middle outer side of the filter paper tube (1) is fixedly fitted with evenly distributed fixing rings (2). The flow guide support mechanism (5) includes an upper inner ring (51), a spiral band (52), a vertical rib (53) and a lower inner ring (54). The upper inner ring (51) and the lower inner ring (54) are provided with evenly distributed vertical ribs (53). Two evenly distributed spiral bands (52) are fixedly connected between the vertical ribs (53). The filter paper tube (1) is fixedly sleeved on the outside of the whole composed of the upper inner ring (51), the spiral band (52), the vertical rib (53) and the lower inner ring (54).

2. The double-helix flow guide frame for a folded filter cartridge according to claim 1, characterized in that: The outer surfaces of the upper inner ring (51), the vertical rib (53), and the lower inner ring (54) are all smooth surfaces, and the edges of the upper inner ring (51), the spiral band (52), the vertical rib (53), and the lower inner ring (54) are all rounded.

3. The double-helix flow guide frame for a folded filter cartridge according to claim 1, characterized in that: The cross-section of the spiral strip (52) is an arc-shaped strip, and the width of the spiral strip (52) increases from top to bottom.

4. The double-helix flow guide frame for a folded filter cartridge according to claim 1, characterized in that: The pitch of the spiral band (52) decreases from top to bottom, while the number of turns of the spiral band (52) increases from top to bottom.

5. The double-helix flow guide frame for a folded filter cartridge according to claim 3, characterized in that: The spiral strip (52) is curved toward the center line of the inner ring (51) and the angle between the spiral strip and the vertical rib (53) is less than 90°.

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