A high efficiency filter cartridge and processing method

Abstract

A high-efficiency filter cartridge, the filter cartridge comprises a columnar hollow cylinder, the outer peripheral wall of the hollow cylinder is covered with pleated filter cartridge fabric, the filter cartridge fabric forms continuous V-shaped pleats on the outer periphery of the hollow cylinder, a plurality of inner spacer rings are arranged on the inner side of the filter cartridge fabric, continuous convex teeth are convexly arranged on the circumference of each inner spacer ring, and the inner ends of the inner spacer rings are fixed on the outer peripheral surface of the hollow cylinder; a plurality of fixing belts are arranged at intervals on the outer side of the filter cartridge fabric for fixing, and the space between the fixing belt and each V-shaped pleat of the filter cartridge fabric is filled with heat-resistant glue, a plurality of inner rings are welded at intervals on the outer periphery of the hollow cylinder, the inner ends of the inner spacer rings are connected to the inner rings, and the inner rings, inner spacer rings, fixing belts and heat-resistant glue are located on the same horizontal plane. The present invention can solve the problem of no filtering effect caused by the adhesion of the filter cartridge fabric, and achieve the purpose of increasing the effective filtering area.

Description

Technical Field

[0001] The invention relates to the field of dust removal equipment, and more particularly to a high-efficiency filter cartridge and a processing method thereof. Background Art

[0002] Bag filter has a high dust interception rate for dusty gas and has been promoted for use in coal-fired power plants, cement, steel and other fields. Compared with filter bags, filter cartridges have a larger filtration area. Under the same length, the area of ​​filter cartridges is 2 to 4 times that of filter bags. Replacing filter bags of the same length with filter cartridges can greatly increase the filtration area, reduce the filtration wind speed, and reduce dust emissions without modifying the dust collector.

[0003] In the prior art, an air filter cartridge includes a columnar hollow cylinder as an inner lining support, and the outer peripheral wall of the hollow cylinder is covered with a pleated filter cartridge fabric. The outer shell of the filter cartridge fabric may be provided with a reinforcing fixing belt. The two ends of the hollow cylinder are sealed by end covers and bottom covers. When purifying the air, the air passes through the filter material layer and enters the hollow cavity of the hollow cylinder and is discharged. When the existing filter cartridge filters dust at a relatively high concentration, dust is easy to clog between the two pleats of the filter cartridge fabric, affecting the filtration efficiency. The reason is that the gap between the two pleats is too small. On the other hand, during the folding process of the filter cartridge fabric, the pleats will adhere to each other, causing the bonded part to lose its filtration performance. If a large area of ​​pleats of a filter cartridge are bonded, the filtration effect will be greatly reduced, and the effect of increasing the filtration area cannot be achieved.

[0004] Since the filter cartridge fabric plays a filtering role, the filtering area during the process of the filter cartridge filtering the dusty airflow depends on the effective filtering area of ​​the filter cartridge fabric. The definition of the effective filtering area is that the filter cartridge fabric is fully unfolded without being blocked, bonded, blocked, etc., and can be filtered based on the original air flow performance of the original filter cartridge fabric. The filter cartridge fabric forming process is to fold and shape the fabric before processing it into a filter cartridge. In addition, during the application of the existing filter cartridge, the pleats on the filter cartridge are prone to deviation, resulting in different pleat spacings. For a small pleat spacing, dust is easy to block the pleat gaps with small pleat spacings. Backblowing can hardly clear the dust blocked by the pleat gaps with small pleat spacings, resulting in a loss of filtering effect. The filter cartridge fabric with a large pleat spacing can provide a relatively complete filtering area. In this case, if the pleat spacing on one side of the two adjacent pleats is too small and the pleat spacing on the other side is too large, it will eventually lead to a loss of half of the filtering area. During the processing, if the process control is not good, the fabrics on both sides of the pleats of the filter cartridge fabric will be bonded, which will cause the air flow of this part of the filter cartridge fabric to be almost lost. If the bonding fabric of a filter cartridge pleat is too large, the effective filtration area of ​​the filter cartridge will be smaller. The above-mentioned pleat spacing and pleat bonding will not only occur during the processing process, but also during the application of the filter cartridge. Therefore, the problem to be solved in this case is to solve the problem of no filtration effect caused by the adhesion of the filter cartridge fabric, to increase the effective filtration area, and to greatly improve the filtration efficiency of the filter cartridge. Summary of the invention

[0005] The purpose of the present invention is to provide a high-efficiency filter cartridge and a processing method, which can solve the problem of no filtering effect caused by the adhesion of filter cartridge cloth and achieve the purpose of increasing the effective filtering area.

[0006] In order to achieve the above object, the solution of the present invention is:

[0007] A high-efficiency filter cartridge, the filter cartridge comprises a cylindrical hollow cylinder, the outer peripheral wall of the hollow cylinder is covered with pleated filter cartridge fabric, the filter cartridge fabric forms continuous V-shaped pleats on the outer periphery of the hollow cylinder, a plurality of inner spacer rings are arranged on the inner side of the filter cartridge fabric, continuous convex teeth are convexly arranged on the circumference of each inner spacer ring and extend into each V-shaped pleat of the filter cartridge fabric respectively, and the inner end of the inner spacer ring is fixed to the outer peripheral surface of the hollow cylinder; a plurality of fixing belts are arranged at intervals on the outer side of the filter cartridge fabric for fixing, and the space between the fixing belt and each V-shaped pleat of the filter cartridge fabric is filled with heat-resistant glue, a plurality of inner rings are welded at intervals on the outer periphery of the hollow cylinder, the inner end of the inner spacer ring is connected to the inner ring, and the inner ring, the inner spacer ring, the fixing belt and the heat-resistant glue are located on the same horizontal plane.

[0008] Furthermore, each convex tooth is embedded from the inside to the outside to 1 / 3 to 2 / 3 of the depth of the V-shaped pleat.

[0009] Furthermore, in the inner spacer ring, the outer end of each convex tooth protrudes to form an arc shape.

[0010] Furthermore, the number of inner spacer rings disposed on the outer circumference of the hollow cylinder is greater than that of the fixing belts.

[0011] Furthermore, a plurality of vertical ribs are provided on the outer periphery of the hollow cylinder, each of the vertical ribs is vertically welded to each inner ring, and the inner end of the inner spacer ring is welded and fixed to the vertical rib.

[0012] Furthermore, the heat-resistant adhesive is silicone adhesive, phenolic resin adhesive or heat-resistant epoxy adhesive.

[0013] A method for processing a high-efficiency filter cartridge comprises the following steps:

[0014] Step 1, a plurality of inner spacer rings are fixed at intervals on the outer peripheral surface of the hollow cylinder, the outer side of the inner spacer rings are covered with pleated filter cartridge fabric, and the convex teeth on the inner spacer rings are embedded in each V-shaped pleat of the filter cartridge fabric to open each V-shaped pleat inside the filter cartridge fabric;

[0015] Step 2: After the inner side of the filter cartridge fabric is processed, multiple fixing belts of the same material as the filter cartridge fabric are arranged at intervals on the outer side of the filter cartridge fabric for fixing, and then a tray that fits with the filter cartridge fabric is placed at the bottom of the fixing belt. The tray is provided with multiple equally spaced fitting parts, each fitting part is embedded in the space between each V-shaped pleat of the filter cartridge fabric, and the enclosure formed between the fitting part and the fixing belt is filled with glue, the glue is heat-resistant glue, and the filling depth is the same as the width of the fixing belt;

[0016] Step 3: After the glue is dry, remove the tray. The heat-resistant glue is located inside the fixing belt and between each V-shaped fold.

[0017] Furthermore, in step 2, when fixing the fixing belt, first sew one end of the fixing belt to one side of the filter cartridge fabric. After the fixing belt is wrapped around the filter cartridge fabric, the belt body of the fixing belt is bonded by heat-resistant glue in a tightened state, and then rivets are added to fix the fixing belt to the filter cartridge fabric, so that the head and tail of the fixing belt are fixed.

[0018] Furthermore, in step 2, the tray is annular, and a continuous convex tooth-shaped engaging portion is provided inwardly inside the tray, and the engaging portion is respectively embedded in the gaps between the pleats of the filter cartridge cloth.

[0019] Furthermore, in step 1, a plurality of inner rings are welded at intervals on the outer circumference of the hollow cylinder, and then a plurality of vertical ribs are vertically welded to each inner ring, and the inner ends of the inner spacer rings are welded and fixed to the vertical ribs.

[0020] After adopting the above scheme, the present invention ensures that the filter cartridge fabric will not produce pleat spacing deformation and pleat adhesion problems during processing and operation by arranging an inner spacer ring, an outer fixing belt, and the internal and external limiting effects of glue (heat-resistant glue) in the filter cartridge, thereby maximizing the effective filtration area of ​​the filter cartridge and truly achieving a large-area improvement relative to filter bags of the same height. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 is a transverse cross-sectional view of the filter cartridge of the present invention (without the fixing belt portion);

[0023] Figure 3 It is a transverse cross-sectional view of the filter cartridge of the present invention (with the fixing belt portion). DETAILED DESCRIPTION

[0024] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0025] Combination Figures 1 to 3 As shown, the present invention discloses a high-efficiency filter cartridge, which includes a columnar hollow cylinder 1, with a top cover 2 and a bottom cover 3 connected to both ends of the hollow cylinder 1, and a pleated filter cartridge fabric 4 is covered on the outer peripheral wall of the hollow cylinder 1, wherein the filter cartridge fabric 4 forms continuous V-shaped pleats 41 on the outer periphery of the hollow cylinder.

[0026] In the present invention, a plurality of inner spacer rings 5 ​​are provided on the inner side of the filter cartridge fabric, and continuous convex teeth 51 are provided on the circumference of each inner spacer ring, respectively extending into each V-shaped pleat 41 of the filter cartridge fabric, so that each convex tooth 51 is embedded from the inside to the outside to 1 / 3 to 2 / 3 of the depth of the V-shaped pleat, forming a supporting and unfolding effect on the inner side of the V-shaped pleat 41 to avoid adhesion of the V-shaped pleat 41. The inner end of the inner spacer ring 5 is fixed on the outer circumferential surface of the hollow cylinder 1, and the outer end of each convex tooth 51 in the inner spacer ring 5 is raised to form an arc shape, which is located inside the V-shaped pleat 41 to avoid puncturing the filter cartridge fabric. The ring width of the inner end part of the V-shaped pleat 41 in the inner spacer ring 5 can be 0.3 to 0.6 cm. For the fixing of the inner spacer ring 5, a plurality of inner rings 7 can be welded at intervals on the outer circumference of the hollow cylinder 1, and the width of the inner ring 7 can be 0.3 to 0.6 cm, and the inner end of the inner spacer ring 5 is connected to the outer 7 side of the inner ring. Furthermore, in this case, multiple fixing belts 8 are provided at intervals on the outside of the filter cartridge fabric 4 for fixing, and the fixing belts 8 and each V-shaped fold 41 of the filter cartridge fabric 4 are filled with heat-resistant glue 9. Multiple fixing belts 8 are provided on the outer ring of the filter cartridge fabric 4, so that the inner ring 7, the inner spacer ring 5, the fixing belts 8 and the heat-resistant glue 9 are located on the same horizontal plane. On the outer periphery of the hollow cylinder, the number of inner spacer rings 5 ​​can be set more than the fixing belts 8, and the convex teeth 51 on the inner spacer ring 5 open each V-shaped fold 41 on the inner side of the filter cartridge fabric, which can completely solve the bonding problem between the folds.

[0027] Specifically, multiple vertical ribs 6 may be welded vertically at intervals on each inner ring 7, and 6-12 vertical ribs 6 may be provided on the outer periphery of the hollow cylinder. Through the vertical ribs 6, the inner end of the inner spacer ring 5 can be fixed to the vertical ribs 6 by welding to achieve fixation, and the inner spacer ring 5 and the inner ring 7 can be provided at intervals of 20 cm in the vertical direction of the filter cartridge. The fixing belt 8 can be made of a webbing made of the same material as the filter cartridge fabric, and a fixing belt 8 can be provided at intervals of approximately 40 cm in the vertical direction of the filter cartridge fabric 4. One end of the fixing belt 8 can be sewn to one side of the filter cartridge fabric 4, and after surrounding the filter cartridge fabric once, the other end is glued in a tightened state, and then fixed to the filter cartridge fabric by rivets. The fixing belt 8 is fixed to the filter cartridge fabric 4 by the head and tail fixation of the fixing belt 8 and the friction between the fixing belt 8 and the filter cartridge fabric 4 in a tightened state. Outside the hollow cylinder 1, the inner ring 7, the inner spacer ring 5, the fixing belt 8 and the heat-resistant glue 9 are located on the same horizontal plane. The fixing belt 8 has a tightening effect on the inside, while the inner ring 7 and the inner spacer ring 5 located inside can also form support for the outside. Among them, the heat-resistant glue 9 plays a bonding role while being resistant to high temperatures. The heat-resistant glue can be silicone glue, phenolic resin glue or heat-resistant epoxy glue. Through the fixing belt 8 and the glue injection (heat-resistant glue 9) on the inside, the heat-resistant glue 9 can have a limiting and pulling effect, which limits the pleat spacing and can well solve the problem of pleat spacing deviation.

[0028] After adopting the above structure, the present invention ensures that the filter cartridge fabric will not produce pleat spacing deformation and pleat adhesion problems during processing and operation by arranging the inner spacer ring 5 and the outer fixing belt 8 and the internal and external limiting effect of the glue (heat-resistant glue) in the filter cartridge, thereby maximizing the effective filtration area of ​​the filter cartridge and truly achieving a large-area improvement relative to filter bags of the same height.

[0029] The present invention also discloses a method for processing the above-mentioned high-efficiency filter cartridge, comprising the following steps:

[0030] Step 1, a plurality of inner spacer rings are fixed at intervals on the outer peripheral surface of the hollow cylinder, the outer side of the inner spacer rings are covered with pleated filter cartridge fabric, and the convex teeth on the inner spacer rings are embedded in each V-shaped pleat of the filter cartridge fabric to open each V-shaped pleat inside the filter cartridge fabric;

[0031] Step 2: After the inner side of the filter cartridge fabric is processed, multiple fixing belts of the same material as the filter cartridge fabric are arranged at intervals on the outer side of the filter cartridge fabric for fixing, and then a tray (not shown in the figure) embedded with the filter cartridge fabric is placed at the bottom of the fixing belt. The tray is provided with multiple equally spaced embedding parts, each embedding part is embedded in the interval space of each V-shaped pleat of the filter cartridge fabric, and the enclosed part formed between the embedding part and the fixing belt is filled with glue, the glue is heat-resistant glue, and the depth of the glue filling is the same as the width of the fixing belt;

[0032] Step 3: After the glue is dry, remove the tray. After the heat-resistant glue is cured, it can be fixed on the filter cartridge fabric. The heat-resistant glue is located on the inner side of the fixing belt and between each V-shaped pleat.

[0033] In the above step 1, the two ends of the hollow cylinder 1 are connected with the top cover 2 and the bottom cover 3. A plurality of inner rings 7 may be welded at intervals on the outer circumference of the hollow cylinder 1, and then a plurality of vertical ribs 6 may be vertically welded to each inner ring 7. The inner end of the inner spacer ring 5 may be directly welded and fixed to the vertical ribs 6. The filter cartridge fabric 4 is installed between the top cover 2 and the bottom cover 2, and the convex teeth 51 on the inner spacer ring 5 may be embedded in each V-shaped pleat 41 of the filter cartridge fabric 4, thereby opening each V-shaped pleat 41 on the inner side of the filter cartridge fabric 4.

[0034] In the above step 2, the embedded tray can be an annular tray with internal teeth, and the tray can be made of silicone. The inside of the tray is provided with a continuous convex tooth-shaped embedded part, and the embedded part of the tray is respectively embedded in the gap between the folds of the filter cartridge fabric, and the embedded part can form a fan-shaped convex tooth. When connecting the heat-resistant glue, one end of the fixing belt 8 can be sewn to one side of the filter cartridge fabric 4 first. After the fixing belt surrounds the filter cartridge fabric, the belt body of the fixing belt 8 is bonded by the heat-resistant glue in a tightened state, and then the fixing belt 8 is fixed to the filter cartridge fabric 4 with rivets, so that the fixing belt 8 is fixed at the head and tail, and the fixing belt 8 has a friction force in a tightened state with the filter cartridge fabric 4 in the circumferential direction. The heat-resistant glue 9 can be bonded and fixed to the filter cartridge fabric 4. After curing, it has strong adhesion and can withstand 200 degrees high temperature without softening.

[0035] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A method for processing a high-efficiency filter cartridge, the filter cartridge comprising a cylindrical hollow cylinder, the outer peripheral wall of which is covered with a pleated filter cartridge cloth, characterized in that: The filter cartridge fabric forms continuous V-shaped folds on the outer periphery of the hollow cylinder. A plurality of inner spacer rings are arranged on the inner side of the filter cartridge fabric. Continuous convex teeth are convexly arranged on the circumference of each inner spacer ring and extend into each V-shaped fold of the filter cartridge fabric respectively. The inner end of the inner spacer ring is fixed on the outer peripheral surface of the hollow cylinder. A plurality of fixing belts are arranged at intervals on the outer side of the filter cartridge fabric for fixing. The space between the fixing belt and each V-shaped fold of the filter cartridge fabric is filled with heat-resistant glue. A plurality of inner rings are welded at intervals on the outer periphery of the hollow cylinder. The inner end of the inner spacer ring is connected to the inner ring. The inner ring, the inner spacer ring, the fixing belt and the heat-resistant glue are located on the same horizontal plane. Filter cartridge processing includes the following steps: Step 1, a plurality of inner spacer rings are fixed at intervals on the outer peripheral surface of the hollow cylinder, the outer side of the inner spacer rings is covered with pleated filter cartridge fabric, and the convex teeth on the inner spacer rings are embedded in each V-shaped pleat of the filter cartridge fabric to open each V-shaped pleat inside the filter cartridge fabric; Step 2: After the inner side of the filter cartridge fabric is processed, multiple fixing belts of the same material as the filter cartridge fabric are arranged at intervals on the outer side of the filter cartridge fabric for fixing, and then a tray that fits with the filter cartridge fabric is placed at the bottom of the fixing belt. The tray is provided with multiple equally spaced fitting parts, each fitting part is embedded in the space between each V-shaped pleat of the filter cartridge fabric, and the enclosure formed between the fitting part and the fixing belt is filled with glue, the glue is heat-resistant glue, and the filling depth is the same as the width of the fixing belt; Step 3: After the glue is dry, remove the tray, and the heat-resistant glue is located inside the fixing belt and between each V-shaped fold; In step 2, the tray is annular, and a continuous convex tooth-shaped engaging portion is provided inwardly inside the tray, and the engaging portion is respectively embedded in the gaps between the pleats of the filter cartridge cloth.

2. A method for processing a high-efficiency filter cartridge as claimed in claim 1, characterized in that: In step 2, when fixing the fixing belt, first sew one end of the fixing belt to one side of the filter cartridge fabric. After the fixing belt is wrapped around the filter cartridge fabric, the belt body of the fixing belt is bonded with heat-resistant glue in a tightened state, and then rivets are added to fix the fixing belt to the filter cartridge fabric, so that the head and tail of the fixing belt are fixed.

3. A method for processing a high-efficiency filter cartridge as claimed in claim 1, characterized in that: In step 1, a plurality of inner rings are welded at intervals on the outer circumference of the hollow cylinder, and then a plurality of vertical ribs are vertically welded to each inner ring, and the inner ends of the inner spacer rings are welded and fixed to the vertical ribs.

4. A method for processing a high-efficiency filter cartridge as claimed in claim 1, characterized in that: Each convex tooth is embedded from the inside to the outside to 1 / 3 to 2 / 3 of the depth of the V-shaped pleat.

5. The method for processing a high-efficiency filter cartridge according to claim 1, characterized in that: In the inner spacer ring, the outer end of each convex tooth protrudes to form an arc shape.

6. A method for processing a high efficiency filter cartridge as claimed in claim 1, characterized in that: The number of inner spacer rings arranged on the outer circumference of the hollow cylinder is greater than that of the fixing belts.

7. A method for processing a high efficiency filter cartridge as claimed in claim 6, characterized in that: A plurality of vertical ribs are arranged on the outer periphery of the hollow cylinder, each of which is vertically welded to each inner ring, and the inner end of the inner spacer ring is welded and fixed to the vertical rib.

8. The method for processing a high efficiency filter cartridge according to claim 1, characterized in that: The heat-resistant adhesive is silicone adhesive, phenolic resin adhesive or heat-resistant epoxy adhesive.

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