Filter cartridge for bag-type dust collector

Abstract

The utility model relates to the technical field of bag-type dust removers, in particular to a filter cartridge for a bag-type dust remover, which comprises two supporting seats arranged in parallel, a plurality of coaxially arranged annular plates are arranged on the sides, close to each other, of the two supporting seats, and the radiuses of the annular plates are sequentially decreased from outside to inside. A plurality of cylindrical cloth bags are further arranged between the two supporting seats, the ends of the cloth bags correspond to the annular plates in a one-to-one mode and are fixed to the annular plates, the cloth bags are fiber fabric bags, and the number of holes of the cloth bags is sequentially increased in the direction away from the ventilation pipe. When the filter cartridge for the bag-type dust collector is used, dust-containing gas is filtered for multiple times through the arrangement of the multiple layers of cloth bags, and the dust-containing gas can be filtered in a graded manner in different particle size intervals along with the sequential decrease of hole meshes of the cloth bags from outside to inside, so that the service life of the filter cartridge is prolonged, and the replacement frequency of the cloth bags is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bag filters, in particular to a filter cartridge for a bag filter. Background Art

[0002] A bag filter is a dry dust filtering device; it is suitable for collecting fine, dry, non-fibrous dust; the filter bag is made of woven filter cloth or non-woven felt, and the fibrous fabric is used to filter the dust-containing gas.

[0003] When the bag filter is in use, a filter bag made of fibrous fabric is sleeved on the filter cartridge. By allowing the dust-containing gas to enter the filter cartridge from the surface of the filter cartridge, the dust is isolated on the filter bag on the surface of the filter cartridge, so as to achieve the dust removal and filtration of the dust-containing gas. However, due to the different sizes of dust particles, the single-sided bag filtration may cause the pores of the bag to be saturated in advance. That is, after a period of use, the filtration effect of the bag will decline, which will lead to the inability to perform the filtration operation, affect the service life of the bag, and require premature cleaning and replacement of the bag. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the above-mentioned disadvantages in the prior art, and to propose a filter cartridge for a bag filter.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: design a filter cartridge for a bag filter, including two parallel support seats. On the relatively close sides of the two support seats, a plurality of coaxially arranged annular plates are provided. The radii of the plurality of annular plates decrease sequentially from the outside to the inside. Between the two support seats, a plurality of cylindrical filter bags are also provided. The ends of the filter bags correspond to the annular plates one by one and are fixed on the annular plates. Among them, the filter bag is a fibrous fabric bag, and the pore numbers of the plurality of filter bags increase sequentially in the direction away from the air pipe;

[0006] In the middle between the two support seats, an air pipe is provided. The bottom of the air pipe is fixed on the lower support seat, and the top of the air pipe penetrates through the upper support seat. A plurality of spaced intake cylinders are provided on the side surface of the air pipe. A plurality of spaced through holes are provided in the intake cylinders, and a filter screen is wrapped on the intake cylinders.

[0007] Preferably, a hose clamp is provided on the outer side of the end of the filter bag. The hose clamp corresponds to the annular plate, that is, the filter bag is fastened to the annular plate by the hose clamp.

[0008] Preferably, a plurality of spaced support frames are provided between the two support seats. The ends of the support frames are fixedly corresponding to the annular plates on the two support seats.

[0009] Preferably, the outer side of the support frame is an arc surface coaxially corresponding to the outer wall of the annular plate.

[0010] Preferably, a connecting pipe is connected to one end of the air inlet cylinder close to the ventilation pipe, and the connecting pipe is threadedly connected in the sleeve, while the sleeve is fixed on the outer wall of the ventilation pipe.

[0011] Preferably, a sealing ring is arranged between the air inlet cylinder and the sleeve, and the sealing ring is fixed on the end of the sleeve.

[0012] Preferably, a mounting seat is fixed on the bottom of the lower support seat.

[0013] The beneficial effects of the design scheme proposed by the present utility model in the application process are as follows:

[0014] 1. The filter cartridge for the bag filter performs multiple filtration operations on the dust-containing gas through the arrangement of multiple layers of cloth bags. As the pore size of the cloth bags decreases from the outside to the inside, the dust-containing gas can be filtered in different particle size ranges, thereby increasing the service life of the filter cartridge and reducing the frequency of cloth bag replacement.

[0015] 2. The filter cartridge for the bag filter is provided with multiple air inlet cylinders, so that the filtered dust-containing gas can be discharged more quickly. Moreover, the dispersed arrangement of the multiple air inlet cylinders also distributes the acting force that attracts the dust-containing gas to flow onto the cloth bags at multiple positions of the cloth bags, so that the dust-containing gas does not act concentratedly in a certain area of the cloth bag, thereby preventing the blockage of this area of the cloth bag and affecting subsequent filtration. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structure of the present utility model Figure 1 ;

[0017] Figure 2 is a schematic structure of the present utility model Figure 2 ;

[0018] Figure 3 is a schematic internal structure diagram of the present utility model;

[0019] Figure 4 is a main sectional view of the present utility model;

[0020] Figure 5 is a top sectional view of the present utility model.

[0021] In the figure: 1. Support seat; 2. Ventilation pipe; 3. Annular plate; 4. Support frame; 5. Cloth bag; 6. Hose clamp; 7. Sleeve; 8. Air inlet cylinder; 9. Through hole; 10. Connecting pipe; 11. Mounting seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0023] Referring to Figures 1-5 , a filter cartridge for a bag filter includes two support seats 1 arranged in parallel. In the middle between the two support seats 1, there is a ventilation pipe 2. The bottom of the ventilation pipe 2 is fixed on the lower support seat 1, and the top of the ventilation pipe 2 penetrates through the upper support seat 1. The two support seats 1 can be connected by the ventilation pipe 2; an installation seat 11 is fixed on the bottom of the lower support seat 1 for fixedly installing the support seat 1.

[0024] As Figure 4 and Figure 5 shown, a plurality of intake cylinders 8 arranged at intervals are provided on the side surface of the ventilation pipe 2. A plurality of through holes 9 arranged at intervals are opened on the intake cylinders 8. During use, the bottom of the ventilation pipe 2 is connected to an air outlet device, so that the dust-containing gas can enter the ventilation pipe 2 through the through holes 9 and be discharged from the top of the ventilation pipe 2; a filter screen is wrapped on the intake cylinders 8 to filter the dust-containing gas entering the intake cylinders 8 from the through holes 9 again.

[0025] It should be noted that a connecting pipe 10 is connected to one end of the intake cylinder 8 close to the ventilation pipe 2, and the connecting pipe 10 is threadedly connected to a sleeve 7, and the sleeve 7 is fixed on the outer wall of the ventilation pipe 2, so that the intake cylinder 8 is detachably installed on the ventilation pipe 2; a sealing ring is provided between the intake cylinder 8 and the sleeve 7, and the sealing ring is fixed on the end of the sleeve 7 to ensure the sealing performance of the connection between the intake cylinder 8 and the sleeve 7.

[0026] As Figure 1 and Figure 5 shown, a plurality of coaxially arranged annular plates 3 are provided on each side of the two support seats 1 close to each other. The radii of the plurality of annular plates 3 decrease sequentially from the outside to the inside. Between the two support seats 1, there are also a plurality of cylindrical cloth bags 5. The ends of the cloth bags 5 correspond to the annular plates 3 one by one and are fixed on the annular plates 3. Among them, the cloth bags 5 are fiber fabric bags, and the pore sizes of the plurality of cloth bags 5 increase sequentially in the direction away from the ventilation pipe 2, providing multiple-stage filtration for the filtration of the dust-containing gas, that is, separating dust with different particle sizes, which not only ensures the full filtration operation of the dust-containing gas, but also reduces the possibility that the cloth bags 5 are saturated in advance and cannot be used normally, improves the service life of the cloth bags 5, and reduces the replacement frequency of the cloth bags 5.

[0027] Specifically, a plurality of intake cylinders 8 are dispersedly distributed on the ventilation pipe 2, providing a plurality of action sources for the flow of the dusty gas into the ventilation pipe 2, so that the dusty gas can also flow into the ventilation pipe 2 dispersedly, that is, the dusty gas can be in dispersed contact with the surface of the filter bag 5, preventing the contact position of the dusty gas with the filter bag 5 from being too concentrated and causing the filter bag 5 to be blocked, and reducing the service life of the filter bag 5.

[0028] It should be noted that throat collars 6 are provided on the outer sides of the ends of the filter bag 5. The throat collars 6 correspond to the annular plates 3, that is, the filter bag 5 is fastened to the annular plates 3 through the throat collars 6, enabling the filter bag 5 to be detachably installed on the annular plates 3, which is convenient for the disassembly and replacement of the filter bag 5.

[0029] Furthermore, as Figure 3 shown, a number of support frames 4 arranged at intervals are provided between the two support seats 1. The ends of the support frames 4 are fixedly corresponding to the annular plates 3 on the two support seats 1 to strengthen the connection between the two support seats 1. The outer side of the support frame 4 is an arc surface coaxial with the outer wall of the annular plate 3, which also provides support for the filter bag 5, enabling the filter bag 5 to be propped up by the support frames 4 after being fixed, preventing the filter bag 5 from being wrinkled and affecting the filtering ability of the filter bag 5.

[0030] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A filter cartridge for a bag filter, characterized in that: The invention comprises two support seats (1) arranged in parallel, a plurality of coaxially arranged annular plates (3) are arranged on the relatively close sides of the two support seats (1), the radius of the plurality of annular plates (3) decreases from the outside to the inside, and a plurality of cylindrical cloth bags (5) are arranged between the two support seats (1), the ends of the cloth bags (5) correspond to the annular plates (3) one by one and are fixed on the annular plates (3), wherein the cloth bags (5) are fiber fabric bags, and the number of meshes of the plurality of cloth bags (5) increases in a direction away from the ventilation pipe (2); A ventilation pipe (2) is provided in the middle between the two support seats (1), the bottom of the ventilation pipe (2) is fixed on the support seat (1) located at the bottom, and the top of the ventilation pipe (2) passes through the support seat (1) located at the top, and a plurality of air inlet cylinders (8) arranged at intervals are provided on the side of the ventilation pipe (2), a plurality of through holes (9) arranged at intervals are opened on the air inlet cylinder (8), and a filter screen is wrapped on the air inlet cylinder (8).

2. A filter cartridge for a bag dust collector according to claim 1, characterized in that: A throat hoop (6) is provided on the outer side of each end of the cloth bag (5), and the throat hoop (6) corresponds to the annular plate (3), that is, the cloth bag (5) is fastened to the annular plate (3) through the throat hoop (6).

3. The filter cartridge for a bag dust collector according to claim 1, characterized in that: A plurality of support frames (4) are arranged at intervals between the two support seats (1), and the ends of the support frames (4) are fixed correspondingly to the annular plates (3) on the two support seats (1).

4. A filter cartridge for a bag dust collector according to claim 3, characterized in that: The outer side of the support frame (4) is an arc-shaped surface coaxially corresponding to the outer wall of the annular plate (3).

5. The filter cartridge for a bag dust collector according to claim 1, characterized in that: A connecting pipe (10) is connected to one end of the air inlet cylinder (8) close to the ventilation pipe (2), and the connecting pipe (10) is threadedly connected in the sleeve (7), and the sleeve (7) is fixed on the outer wall of the ventilation pipe (2).

6. The filter cartridge for a bag dust collector according to claim 1, characterized in that: A sealing ring is arranged between the air inlet cylinder (8) and the sleeve (7), and the sealing ring is fixed on the end of the sleeve (7).

7. The filter cartridge for a bag dust collector according to claim 1, characterized in that: A mounting seat (11) is fixed on the bottom of the supporting seat (1) located below.

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