Double-layer base cloth dust removal filter bag

Abstract

The utility model provides a dedusting filter bag with double-layer base cloth, which relates to the technical field of dedusting and comprises a double-layer filter cartridge and a support framework, the support framework comprises a support frame body, an adjusting support and a plurality of support components, the support frame body comprises a mounting ring and a support beam rod, and each support component comprises a positioning disc, a sliding disc and an elastic air bag. The outer diameter of the positioning disc and the outer diameter of the sliding disc are smaller than the inner diameter of the double-layer filter cylinder, the positioning disc is fixed to the supporting beam rod, the supporting beam rod is sleeved with the sliding disc in a sliding mode, the elastic air bag is arranged between the positioning disc and the sliding disc, and the outer side of the elastic air bag abuts against the inner wall of the double-layer filter cylinder. A plurality of extrusion nuts are distributed on the adjusting support at intervals and abut against the upper side of the sliding disc, the upper side of the mounting ring is in threaded connection with a screw handle ring, and the screw handle ring abuts against the upper side of the adjusting support in a sliding mode. The double-layer filter cartridge can be propped by extruding the elastic air bag to stretch out and draw back, so that the double-layer filter cartridge is prevented from being abraded.

Description

TECHNICAL FIELD

[0001] The utility model relates to dust removal technical field, concretely is a double -layer base cloth dust removal filter bag. BACKGROUND

[0002] Dust removal filter bag is widely used in industrial dust removal system, is mainly used for high temperature, high humidity or high concentration dust containing gas filtration, and PTFE fiber has excellent chemical stability, high temperature stability, low surface energy characteristics and high filtration precision, is applicable to the dust removal filter bag under complex working conditions such as production sulfur-containing flue gas.

[0003] In high temperature, high humidity environment, the wrinkle of filter bag is very easy to cause the hardening, and then appears filter bag mildew etc., greatly reduces the service life of filter bag, and bag cage is mainly used for the support and the protection of filter bag's effect, places the filter and the ash removal process inwards collapse and causes the wrinkle, when filter bag and bag cage assemble, the size of bag cage and the inner wall of filter bag need to be closely attached, avoid the gap between bag cage and filter bag, and then appear the wrinkle under the pressure action.

[0004] However, the wear resistance of PTFE fiber filter material is general, and the filter bag will appear the situation of tremor in the process, and reciprocating friction with the fixed structure bag cage, and the filter bag is damaged, and the service life of the filter bag is also reduced. UTILITY MODEL CONTENTS

[0005] (I) the technical problem solved

[0006] In view of the deficiencies of the prior art, the utility model provides a double -layer base cloth dust removal filter bag, and solves the problems in the above background art.

[0007] (II) technical scheme

[0008] To achieve the above object, the utility model is realized by the following technical schemes:

[0009] The dust removal filter bag with double-layer base cloth comprises a double-layer filter cylinder and a supporting framework, the supporting framework is arranged in the double-layer filter cylinder, the supporting framework comprises a supporting frame body, an adjusting support and a plurality of supporting assemblies, the supporting frame body comprises a mounting ring and a plurality of supporting beam rods which are fixed at intervals on the lower side of the mounting ring, the supporting assemblies are distributed at intervals on the supporting beam rods, the supporting assembly comprises a positioning disc, a sliding disc and an elastic air bag which is clamped between the positioning disc and the sliding disc, the outer diameter of the positioning disc and the sliding disc is smaller than the inner diameter of the double-layer filter cylinder, the positioning disc is fixed on the supporting beam rod, the sliding disc is slidably sleeved on the supporting beam rod, mounting ring grooves are formed on the outer edges of the positioning disc and the sliding disc in a facing mode, the cross section of the elastic air bag is in the shape of an I-beam, positioning rings which are in recess-protrusion cooperation with the elastic air bag are arranged on the side walls of the mounting ring grooves, the outer side of the elastic air bag abuts against the inner wall of the double-layer filter cylinder, the adjusting support is slidably arranged on the supporting frame body, and the adjusting support abuts against the upper side of the sliding disc.

[0010] Preferably, the adjusting support comprises a connecting ring and abutting beam rods which are arranged at intervals on the connecting ring, the abutting beam rods are slidably arranged on the positioning disc, and a plurality of extrusion nuts are arranged at intervals on the abutting beam rods and abut against the upper side of the sliding disc.

[0011] Preferably, a threaded ring groove is formed on the upper side of the mounting ring, the connecting ring is slidably arranged in the threaded ring groove, a screw handle ring is threadedly connected in the threaded ring groove, and the screw handle ring slidably abuts against the upper side of the connecting ring.

[0012] Preferably, a plurality of connecting blocks and sliding blocks are integrally formed on the inner walls of the positioning disc and the sliding disc respectively, the connecting blocks are fixed on the supporting beam rods, the sliding blocks are slidably sleeved on the supporting beam rods, and the connecting blocks and the sliding blocks are slidably sleeved on the abutting beam rods.

[0013] Preferably, external threads are arranged on the abutting beam rods, and the extrusion nuts are threadedly sleeved on the abutting beam rods.

[0014] Preferably, the double-layer filter cylinder comprises a filter base cloth layer and a multifunctional base cloth layer which are sewn together, and the multifunctional base cloth layer is sewn on the inner side of the filter base cloth layer.

[0015] (Three) beneficial effects

[0016] The utility model provides a double-layer base cloth dust removal filter bag. Has the following beneficial effects:

[0017] 1. In this utility model, the outer diameter of the positioning plate and the sliding plate is smaller than the inner diameter of the double-layer filter cartridge, which allows the support frame to be placed smoothly into the double-layer filter cartridge, avoiding scratching and damaging the double-layer filter cartridge during installation. At the same time, turning the screw ring can make it contact the connecting ring downwards, causing the contact beam rod to move downwards and slide the sliding plate towards the sliding plate, compressing the elastic airbag. This causes the elastic airbag to protrude from the mounting ring groove on the outside and contact the inner wall of the double-layer filter cartridge to form an internal support, preventing wrinkles from forming in the double-layer filter cartridge. In addition, the elastic airbag has a certain degree of elasticity and can vibrate synchronously with the vibration of the double-layer filter cartridge, avoiding friction between the double-layer filter cartridge and the elastic airbag.

[0018] 2. The double-layer filter cartridge of this utility model is designed with a double-layer base fabric structure, which improves the support strength of the base fabric and adds desulfurization and denitrification functions. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a double-layer base fabric dust removal filter bag according to the present invention;

[0020] Figure 2 This is a schematic diagram of the supporting frame structure in this utility model;

[0021] Figure 3 This is a cross-sectional view of the supporting frame in this utility model;

[0022] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle.

[0023] In the diagram: 1. Double-layer filter cartridge; 2. Support frame; 21. Mounting ring; 22. Support beam; 3. Adjusting bracket; 31. Connecting ring; 32. Abutting beam; 4. Positioning plate; 5. Sliding plate; 6. Elastic airbag; 7. Connecting block; 8. Sliding block; 9. Compression nut; 10. Screw ring. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] This utility model embodiment provides a double-layer base fabric dust removal filter bag, such as Figure 1 As shown, the filter cartridge 1 includes a double-layer filter cartridge 1 and a support frame. The support frame is placed inside the double-layer filter cartridge 1. The double-layer filter cartridge 1 includes a filter base fabric layer and a multifunctional base fabric layer sewn together. The multifunctional base fabric layer is sewn inside the filter base fabric layer. The outside of the multifunctional base fabric layer is coated with a desulfurization layer and a denitrification layer in sequence by hot pressing. The double-layer structure improves the support strength of the double-layer filter cartridge 1.

[0026] like Figures 2-4As shown, the support framework comprises a support frame body 2, an adjusting support 3 and a plurality of support assemblies, the support frame body 2 comprises a mounting ring 21 and a plurality of support beams 22 fixed at the lower side of the mounting ring 21, the support assemblies are distributed on the support beams 22, the support assemblies comprise opposite positioning discs 4, sliding discs 5 and elastic air bags 6 clamped between the positioning discs 4 and the sliding discs 5, the outer diameters of the positioning discs 4 and the sliding discs 5 are smaller than the inner diameter of the double-layer filter cartridge 1, so that mounting gaps are formed between the outer edges of the positioning discs 4 and the sliding discs 5 and the inner wall of the double-layer filter cartridge 1, facilitating the insertion of the mounting support framework into the double-layer filter cartridge 1.

[0027] The inner walls of the positioning discs 4 and the sliding discs 5 are integrally formed with a plurality of connecting blocks 7 and sliding blocks 8, respectively, the connecting blocks 7 are circumferentially distributed on the inner side of the positioning disc 4, the positioning disc 4 is fixed on the support beam 22, the support beams 22 are fixed on the connecting blocks 7, the sliding disc 5 is slidingly sleeved on the support beam 22, the support beams 22 are slidingly installed on the connecting blocks 7, the mounting ring 21 groove is formed in the outer edge of the positioning disc 4 and the sliding disc 5, the elastic air bag 6 is provided with an inflation cavity, the outer wall of the elastic air bag 6 is in the shape of an H, the elastic air bag 6 is provided with a clamping ring groove on the upper and lower sides, the side wall of the mounting ring 21 groove is provided with a positioning ring in the concave-convex matching relationship with the clamping ring groove, which can position the elastic air bag 6, in the free state, under the elastic action of the elastic air bag 6, the support positioning disc 4 and the sliding disc 5 are in contact to form a displacement distance, the sliding disc 5 slides up and down on the support beam 22, the distance between the positioning disc 4 and the sliding disc 5 is reduced, and the elastic air bag 6 is extruded, so that the outer side of the elastic air bag 6 expands outward and protrudes outward from the mounting ring 21 groove, the positioning disc 4 is positioned and in contact with the inner wall of the double-layer filter cartridge 1 to form support, so that the double-layer filter cartridge 1 remains in a straight state, avoiding the occurrence of inward folds during filtering and dust removal, at the same time, the elastic air bag 6 has a certain elasticity and can keep synchronization with the vibration of the double-layer filter cartridge 1, avoiding the abrasion of the elastic air bag 6 to the inner wall of the double-layer filter cartridge 1.

[0028] The adjusting support 3 is slidingly installed on the support frame body 2, the adjusting support 3 comprises a connecting ring 31 and a plurality of abutting beams 32 distributed on the connecting ring 31, the upper side of the mounting ring 21 is provided with a threaded ring groove, the outer diameter of the connecting ring 31 is equal to the inner diameter of the threaded ring groove, so that the connecting ring 31 can slide up and down on the threaded ring groove, the abutting beams 32 are staggered with the support beams 22, the abutting beams 32 slidingly pass through the connecting blocks 7 and the sliding blocks 8, the abutting beams 32 are provided with external threads, a plurality of extrusion nuts 9 are distributed on the abutting beams 32, the extrusion nuts 9 are threadedly connected to the abutting beams 32, and the extrusion nuts 9 abut the upper side of the sliding block 8.

[0029] The screw shank ring 10 is connected in the threaded ring groove, and is in sliding abutment on the upper side of the connecting ring 31, and manual screwing of the screw shank ring 10 can move up and down on the threaded ring groove and always abut on the connecting ring 31, so as to adjust the height of the adjusting support 3, so as to press and relax the elastic air bag 6.

[0030] Working principle:

[0031] In the free state, the elastic air bag 6 itself is elastically left and right, so that the positioning disc 4 and the sliding disc 5 maintain a certain displacement interval, at this time, the outer edge of the elastic air bag 6 is flush with the outer wall of the positioning disc 4 or hidden in the groove inside the mounting ring 21, at this time, the outer diameter of the support skeleton is smaller than the inner diameter of the double-layer filter cartridge 1, so that the support skeleton can be smoothly inserted into the double-layer filter cartridge 1, at this time, the installation gap is formed between the double-layer filter cartridge 1 and the support skeleton, so that the positioning disc 4 and the sliding disc 5 and the inside of the double-layer filter cartridge 1 are separated from each other, so that the outer edge of the positioning disc 4 and the sliding disc 5 will not contact during the working process of the double-layer filter cartridge 1, and therefore friction will not occur.

[0032] After placing the support skeleton, the screw shank ring 10 is screwed into the threaded ring groove, and continues to be screwed to abut the connecting ring 31, the adjusting support 3 is abutted downward, and is abutted on the sliding disc 5 through the pressing nut 9, so that the sliding disc 5 slides towards the positioning disc 4 and presses the elastic air bag 6 to shrink, so that the outer wall of the elastic air bag 6 protrudes outward from the outer edge of the positioning disc 4 and abuts on the inner wall of the double-layer filter cartridge 1, so as to form support for the double-layer filter cartridge 1, keep the support skeleton closely attached to the double-layer filter cartridge 1 while avoiding contact with the positioning disc 4 and the sliding disc 5, the elastic air bag 6 has elasticity and can stretch and contract synchronously with the vibration of the double-layer filter cartridge 1, so as to play a damping role while avoiding relative friction between the outer wall of the elastic air bag 6 and the inner wall of the double-layer filter cartridge 1, causing wear of the double-layer filter cartridge 1.

[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A double-layer base cloth dedusting filter bag, comprising a double-layer filter cylinder and a supporting framework, the supporting framework is placed in the double-layer filter cylinder, characterized in that: The supporting framework comprises a supporting frame body, an adjusting support and a plurality of supporting components, the supporting frame body comprises a mounting ring and a plurality of supporting beam rods fixed at the lower side of the mounting ring at intervals, the supporting components are distributed on the supporting beam rods at intervals, the supporting component comprises opposite positioning discs, sliding discs and elastic air bags clamped between the positioning discs and the sliding discs, the outer diameters of the positioning discs and the sliding discs are smaller than the inner diameter of the double-layer filter cartridge, the positioning discs are fixed on the supporting beam rods, the sliding discs are slidingly sleeved on the supporting beam rods, mounting ring grooves are formed in the outer edges of the positioning discs and the sliding discs in opposite directions, the cross sections of the elastic air bags are in the shape of an I-beam, the side walls of the mounting ring grooves are provided with positioning rings in engagement with the elastic air bags, the outer sides of the elastic air bags abut against the inner wall of the double-layer filter cartridge, the adjusting support is slidingly mounted on the supporting frame body, and the adjusting support abuts against the upper side of the sliding disc.

2. The dual base cloth dedusting filter bag according to claim 1, characterized in that: The adjusting support comprises a connecting ring and abutting beam rods distributed on the connecting ring at intervals, the abutting beam rods slidingly pass through the positioning discs, and a plurality of extrusion nuts are distributed on the abutting beam rods at intervals and abut against the upper side of the sliding disc.

3. A dual base cloth dedusting filter bag according to claim 2, characterized in that: A threaded ring groove is formed in the upper side of the mounting ring, the connecting ring is slidingly placed in the threaded ring groove, a screw shank ring is threadedly connected in the threaded ring groove, and the screw shank ring slidingly abuts against the upper side of the connecting ring.

4. A dual base cloth dedusting filter bag according to claim 3, characterized in that: The inner walls of the positioning discs and the sliding discs are integrally formed with a plurality of connecting blocks and sliding blocks respectively, the connecting blocks are fixed on the supporting beam rods, the sliding blocks are slidingly sleeved on the supporting beam rods, and the connecting blocks and the sliding blocks are slidingly sleeved on the abutting beam rods.

5. A dual base cloth dedusting filter bag according to claim 4, characterized in that: The abutting beam rods are provided with external threads, and the extrusion nuts are threadedly connected and sleeved on the abutting beam rods.

6. A dual base cloth dedusting filter bag according to claim 5, characterized in that: The double-layer filter cartridge comprises filter base cloth layers and multifunctional base cloth layers sewn together, and the multifunctional base cloth layers are sewn on the inner side of the filter base cloth layers.

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