Self-dredging device of industrial filter cartridge dust remover

Abstract

The utility model relates to the technical field of filter cartridge dust removers, and provides a self-dredging device of an industrial filter cartridge dust remover, which is applied to the filter cartridge dust remover, the filter cartridge dust remover comprises a pneumatic pulse mechanism and a plurality of filter elements, each filter element is provided with a wrinkle self-dredging mechanism, each filter element comprises two end covers, a net-shaped inner cylinder and a filter material cylinder, the net-shaped inner barrel is arranged between the two end covers, the filter material barrel is arranged on the circumferential surface of the net-shaped inner barrel and between the two end covers, the filter material barrel is in a multi-fold cylindrical shape and is provided with a plurality of outer fold edges, meanwhile, an inner fold edge is arranged between every two adjacent outer fold edges, and the section of each inner fold edge is in a trapezoid shape. According to the technical scheme, the problem that dust hidden at the wrinkles of the filter cartridge in the prior art is difficult to be directly vibrated out and cleaned only through vibration due to multiple pressing effects of the wrinkles of the filter cartridge is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of filter cartridge dust collectors, and in particular to a self-dredging device for an industrial filter cartridge dust collector. Background Art

[0002] Industrial cartridge dust collector is a high-efficiency dust removal device that uses cartridge as filter material. Different from bag dust collector, cartridge has larger filtration area and smaller equipment volume. It also has the back-blowing self-cleaning function of bag and is more convenient to replace. Its working principle is as follows: when dust-laden gas enters the dust hopper of dust collector, due to the sudden expansion of air flow section and the action of air flow distribution plate, part of coarse particles in air flow settle on the ash hopper under the action of power and inertia. After fine-grained and low-density dust particles enter the dust filter chamber, the dust is deposited on the filter material surface through the combined effects of Brownian diffusion and screening. The purified gas enters the clean air chamber and is discharged through the exhaust pipe through the fan.

[0003] Since the resistance of the cartridge dust collector increases with the increase of the thickness of the dust layer on the surface of the filter material, the conventional cleaning method of the cartridge dust collector in the prior art is: when the filter material resistance of the cartridge dust collector reaches a certain specified value, cleaning will be automatically performed. At this time, the PLC program controls the opening and closing of the pulse valve. First, the lifting valve is closed to cut off the filtered airflow, and then the electromagnetic pulse valve is opened. The compressed air expands rapidly in the upper box body in a very short time and rushes into the filter cartridge, causing the filter cartridge to expand and deform and vibrate. Under the action of the reverse airflow, the dust attached to the outer surface of the filter bag is peeled off and falls into the ash hopper. After cleaning is completed, the electromagnetic pulse valve is closed, the lifting valve is opened, and the chamber resumes the filtering state. Cleaning is carried out in sequence from each chamber in the cartridge dust collector. From the beginning of the chamber cleaning to the beginning of the next cleaning is a cleaning cycle. Finally, the fallen dust falls into the ash hopper and is discharged through the ash discharge valve.

[0004] Although this technology can be used to regularly clean the filter cartridge dust collector, the pulse cleaning method mainly relies on the deformation vibration generated in a very short time. The dust hidden in the folds of the filter cartridge is difficult to be directly vibrated out and cleaned by vibration alone due to the multiple pressures of the folds of the filter cartridge. Therefore, the filter cartridge still needs to be replaced regularly after a certain period of use, and its service life is short. For this reason, we propose a self-draining device for industrial filter cartridge dust collectors for cleaning the folds of the filter cartridge. Utility Model Content

[0005] The utility model provides a self-draining device for an industrial filter cartridge dust collector, which solves the problem in the related art that dust hidden in filter cartridge folds is difficult to be directly vibrated out and cleaned only by vibration due to multiple pressure effects at the filter cartridge folds.

[0006] The technical solution of the utility model is as follows:

[0007] A self-draining device for an industrial filter cartridge dust collector, applied to a filter cartridge dust collector, the filter cartridge dust collector comprising a pneumatic pulse mechanism and a plurality of filter elements, the filter elements being provided with a pleated self-draining mechanism;

[0008] Wherein, the filter element comprises:

[0009] An end cover, wherein two end covers are provided;

[0010] A mesh inner cylinder, the mesh inner cylinder is arranged between the two end covers;

[0011] A filter material cartridge, the filter material cartridge being arranged on the circumferential surface of the mesh inner cartridge and between the two end caps, the filter material cartridge being in the shape of a multi-fold cylinder, having a plurality of outer frills, and an inner frill being arranged between each two adjacent outer frills, and the cross section of the inner frill being in a trapezoidal shape;

[0012] Wherein, the fold self-dredging mechanism comprises:

[0013] A pull rod, wherein the pull rod is provided in plurality, and the plurality of pull rods are respectively connected to the plurality of inner frills;

[0014] A pneumatic pulling component is arranged between the two end covers and is connected to the pneumatic pulse mechanism, and is used to reciprocate the pull rod through the pneumatic impulse of the pneumatic pulse mechanism, so as to make the multiple inner frills concave or convex.

[0015] Preferably, the pneumatic pulling assembly comprises:

[0016] A push plate, the push plate is fixedly connected to the other end of the pull rod;

[0017] A pull cylinder, wherein the push plate is sealingly and slidably arranged in the pull cylinder, and the push plate divides the pull cylinder into a push-out chamber and a reset chamber;

[0018] An air intake ring pipe, wherein two air intake ring pipes are provided, and both of the two air intake ring pipes are fixedly connected to the two end covers;

[0019] Branch pipes, the two intake ring pipes are connected with a plurality of branch pipes;

[0020] Among them, the multiple branch pipes connected to one of the intake ring pipes are connected to the push-out chambers of the multiple pull cylinders, and the multiple branch pipes connected to another intake ring pipe are connected to the reset chambers of the multiple pull cylinders.

[0021] Preferably, the pneumatic pulse mechanism comprises:

[0022] An air source, wherein the air source is provided in a plurality;

[0023] A pneumatic pulse tube, wherein the pneumatic pulse tube is provided in a plurality, the pneumatic pulse tube is connected to the air source, and the air outlet end of the pneumatic pulse tube faces the interior of the mesh inner tube;

[0024] An electromagnetic pulse valve is installed on the pneumatic pulse tube.

[0025] Preferably, the pneumatic pulling assembly further comprises:

[0026] A connecting pipe, wherein two connecting pipes are provided, the two connecting pipes are respectively connected to the two intake ring pipes, and both of the two connecting pipes are connected to the pneumatic pulse pipe;

[0027] The control valve is provided in two pieces, the two control valves are respectively installed on the two connecting pipes, and the two control valves work alternately.

[0028] Preferably, the pneumatic pulling assembly further comprises:

[0029] An exhaust ring pipe, wherein two exhaust ring pipes are provided;

[0030] An exhaust pipe, wherein the plurality of the ejection chambers and the reset chamber are all connected with the exhaust pipe, the plurality of the exhaust pipes connected with the ejection chambers are connected with one of the exhaust ring pipes, and the plurality of the exhaust pipes connected with the reset chambers are connected with another exhaust ring pipe;

[0031] One-way exhaust valve, the one-way exhaust valve is set in two, and the two one-way exhaust valves are respectively installed on the two exhaust ring pipes.

[0032] Furthermore, the inner hem is provided with supporting ribs, and the supporting ribs are connected to the pull rod.

[0033] The working principle and beneficial effects of the utility model are:

[0034] 1. In the utility model, since the cross-sections of the multiple inner folds of the filter cartridge are trapezoidal in shape, compared with the simple reciprocating folding style in the prior art, the folds are more likely to transform between the inner concave shape and the outer convex shape through deformation vibration during pulse cleaning, which is more conducive to the vibration out of the dust at the folds of the filter cartridge.

[0035] 2. In the utility model, by providing a self-draining mechanism at the pleats, it is convenient to pull multiple pull rods connected to the inner pleats back and forth at the same time through the pneumatic pulling component, thereby assisting the multiple inner pleats to transform between the two forms of inner concave and outer convex, further assisting the vibration and cleaning of dust at the pleats of the filter cartridge, and improving the self-draining cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0038] Figure 2 It is a schematic diagram of the structure of the pneumatic pulse mechanism, the filter element and the self-dredging mechanism at the pleats in the utility model;

[0039] Figure 3 This is a schematic diagram of the structure of the filter element in the utility model;

[0040] Figure 4 It is a structural schematic diagram of the cooperation between the filter element and the self-dredging mechanism at the pleats in the utility model;

[0041] Figure 5 It is a structural schematic diagram of another angle of the cooperation between the filter element and the self-dredging mechanism at the pleats in the utility model;

[0042] Figure 6 For this utility model Figure 5 A schematic diagram of the enlarged local structure at point A in the middle;

[0043] Figure 7 It is a schematic diagram for comparing the simple reciprocating folding style of the filter cartridge in the prior art and the trapezoidal cross-section style of the inner pleat in the utility model.

[0044] In the figure:

[0045] 1. Pneumatic pulse mechanism; 2. Filter element;

[0046] 101, end cap; 102, mesh inner cylinder; 103, filter material cylinder; 104, outer hem; 105, inner hem;

[0047] 201, pull rod; 202, push plate; 203, pull cylinder; 204, intake ring pipe; 205, connecting pipe; 206, control valve; 207, exhaust ring pipe; 208, exhaust pipe; 209, one-way exhaust valve;

[0048] 301. air source; 302. pneumatic pulse tube; 303. electromagnetic pulse valve. DETAILED DESCRIPTION

[0049] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0050] Example

[0051] like Figures 1 to 7 As shown, this embodiment proposes a self-draining device for an industrial cartridge dust collector, which is applied to the cartridge dust collector. The cartridge dust collector includes a pneumatic pulse mechanism 1 and a plurality of filter elements 2. The filter elements 2 are provided with a pleated self-draining mechanism;

[0052] The filter element 2 includes an end cap 101, a mesh inner cylinder 102 (the mesh is not shown in the figure, and the actual style is similar to a cylinder surrounded by a mesh, which is a known style of the existing filter cartridge dust collector filter element 2) and a filter material cylinder 103. Two end caps 101 are provided, and the mesh inner cylinder 102 is arranged between the two end caps 101. The filter material cylinder 103 is arranged on the circumferential surface of the mesh inner cylinder 102 and is arranged between the two end caps 101. The filter material cylinder 103 is in a multi-fold cylindrical shape and has a plurality of outer frills 104. At the same time, an inner frill 105 is arranged between each two adjacent outer frills 104, and the cross-section of the inner frill 105 is trapezoidal.

[0053] Among them, the self-clearing mechanism at the folds includes a pull rod 201 and a pneumatic pulling assembly. The pull rod 201 is arranged in plurality, and the plurality of pull rods 201 are respectively connected to the plurality of inner frills 105. Furthermore, support ribs are arranged at the inner frills 105, and the support ribs are connected to the pull rod 201. The pneumatic pulling assembly is arranged between the two end covers 101 and is connected to the pneumatic pulse mechanism 1, and is used to reciprocately pull the pull rod 201 through the pneumatic impulse of the pneumatic pulse mechanism 1, so as to make the plurality of inner frills 105 concave or convex.

[0054] Preferably, the pneumatic pulling assembly includes a push plate 202, a pull cylinder 203, an air intake ring pipe 204 and a branch pipe, the push plate 202 is fixedly connected to the other end of the pull rod 201, the push plate 202 is sealingly and slidably arranged in the pull cylinder 203, the push plate 202 divides the pull cylinder 203 into a push-out chamber and a reset chamber, the air intake ring pipe 204 is provided with two, the two air intake ring pipes 204 are fixedly connected to the two end covers 101, and the two air intake ring pipes 204 are connected with a plurality of branch pipes;

[0055] Among them, the multiple branch pipes connected to one air intake ring pipe 204 are connected to the push-out chambers of the multiple pull cylinders 203 , and the multiple branch pipes connected to another air intake ring pipe 204 are connected to the reset chambers of the multiple pull cylinders 203 .

[0056] Preferably, the pneumatic pulse mechanism 1 includes an air source 301, a pneumatic pulse tube 302 and an electromagnetic pulse valve 303. The air source 301 is set to be multiple, the pneumatic pulse tube 302 is set to be multiple, the pneumatic pulse tube 302 is connected to the air source 301, the air outlet end of the pneumatic pulse tube 302 faces the interior of the mesh inner tube 102, and the electromagnetic pulse valve 303 is installed on the pneumatic pulse tube 302.

[0057] Preferably, the pneumatic pulling assembly also includes a connecting pipe 205 and a control valve 206. The connecting pipe 205 is provided in two, and the two connecting pipes 205 are respectively connected to the two intake ring pipes 204, and the two connecting pipes 205 are both connected to the pneumatic pulse tube 302. The control valve 206 is provided in two, and the two control valves 206 are respectively installed on the two connecting pipes 205, and the two control valves 206 work alternately.

[0058] Preferably, the pneumatic pulling assembly also includes an exhaust ring pipe 207, an exhaust pipe 208 and a one-way exhaust valve 209. Two exhaust ring pipes 207 are provided, and multiple ejection chambers and reset chambers are connected with exhaust pipes 208. The multiple exhaust pipes 208 connected to the ejection chambers are connected to one of the exhaust ring pipes 207, and the multiple exhaust pipes 208 connected to the reset chambers are connected to another exhaust ring pipe 207. Two one-way exhaust valves 209 are provided, and the two one-way exhaust valves 209 are respectively installed on the two exhaust ring pipes 207.

[0059] It should be noted that if Figure 7 As shown, although the traditional pneumatic pulse cleaning method can make the filter cartridge 103 shake off dust by deformation and vibration, it is difficult to directly turn out the folds for more thorough cleaning. This is because the filter cartridge 103 in the prior art has a simple reciprocating folding style, and the endpoints of the outer folds 104 are connected to the end cover 101, and the endpoints of the inner folds 105 are also completely connected to the end cover 101. Therefore, the folds cannot be unfolded and can only be expanded. In this embodiment, the multiple inner folds 105 of the filter cartridge 103 are improved into a trapezoidal shape. Although the endpoints of each outer fold 104 are connected to the end cover 101, the inner fold 105 has no endpoint directly connected to the end cover 101, but is connected to the endpoints of the outer fold 104 through a triangular inclined surface. Therefore, the cross-section of each inner fold 105 is trapezoidal, which can be transformed between the two forms of inner concave and outer convex.

[0060] On the other hand, when the electromagnetic pulse valve 303 is started, the air in the air source 301 pneumatically impacts the interior of the mesh inner tube 102 through the pneumatic pulse tube 302, and at the same time, a control valve 206 on a connecting tube 205 is opened, and the impact airflow in the pneumatic pulse tube 302 simultaneously passes through the connecting tube 205 into an intake ring tube 204, and simultaneously enters multiple push-out chambers or multiple reset chambers through the intake ring tube 204 and multiple branch pipes connected to the intake ring tube 204. It should be noted that when the airflow enters the push-out chamber, the exhaust ring tube 208 connected to the push-out chamber through the multiple exhaust pipes 208 is The one-way exhaust valve 209 on 7 is in a closed state, so that the push-out chamber is in a closed state. The one-way exhaust valve 209 on the exhaust ring tube 207 connected to the reset chamber through multiple exhaust pipes 208 is in an open state, so that the reset chamber can be exhausted to the outside in one direction. After the airflow enters the push-out chamber, the airflow will exert pressure to push the push plate 202 toward the reset chamber, and at the same time push the pull rod 201 toward the reset chamber. The multiple inner folds 105 of the auxiliary filter cartridge 103 are simultaneously pulled out by the multiple pull rods 201 to form an outward convex shape. The direct turning out action at the folds is more conducive to the dust at the folds being vibrated out and cleaned, and the self-dredging cleaning effect is better.

[0061] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-draining device for an industrial cartridge dust collector, applied to a cartridge dust collector, the cartridge dust collector comprising a pneumatic pulse mechanism (1) and a plurality of filter elements (2), characterized in that: The filter element (2) is provided with a pleat self-draining mechanism; Wherein, the filter element (2) comprises: An end cover (101), wherein two end covers (101) are provided; A mesh inner cylinder (102), wherein the mesh inner cylinder (102) is arranged between the two end covers (101); A filter material cartridge (103), the filter material cartridge (103) being arranged on the circumferential surface of the mesh inner cartridge (102) and between the two end covers (101), the filter material cartridge (103) being in the shape of a multi-fold cylinder, having a plurality of outer fringes (104), and an inner fringe (105) being arranged between each two adjacent outer fringes (104), and the cross section of the inner fringes (105) being in the shape of a trapezoid; Wherein, the fold self-dredging mechanism comprises: A pull rod (201), wherein the pull rod (201) is provided in plurality, and the plurality of pull rods (201) are respectively connected to the plurality of inner frills (105); A pneumatic pulling component is disposed between the two end covers (101) and is connected to the pneumatic pulse mechanism (1), and is used to reciprocate the pull rod (201) through the pneumatic impulse of the pneumatic pulse mechanism (1), thereby making the plurality of inner frills (105) have an inwardly concave shape or an outwardly convex shape.

2. The self-draining device for an industrial cartridge dust collector according to claim 1, characterized in that: The pneumatic pulling assembly comprises: A push plate (202), the push plate (202) being fixedly connected to the other end of the pull rod (201); A pull cylinder (203), wherein the push plate (202) is sealingly and slidably disposed in the pull cylinder (203), and the push plate (202) divides the pull cylinder (203) into a push-out chamber and a reset chamber; An air intake ring pipe (204), wherein two air intake ring pipes (204) are provided, and the two air intake ring pipes (204) are both fixedly connected to the two end covers (101); Branch pipes, each of the two air intake ring pipes (204) is connected to a plurality of branch pipes; The plurality of branch pipes connected to one of the air intake ring pipes (204) are connected to the push-out chambers of the plurality of pull cylinders (203), and the plurality of branch pipes connected to another of the air intake ring pipes (204) are connected to the reset chambers of the plurality of pull cylinders (203).

3. The self-draining device for an industrial cartridge dust collector according to claim 2, characterized in that: The pneumatic pulse mechanism (1) comprises: An air source (301), wherein a plurality of air sources (301) are provided; A pneumatic pulse tube (302), wherein a plurality of pneumatic pulse tubes (302) are provided, the pneumatic pulse tube (302) is in communication with the air source (301), and the air outlet end of the pneumatic pulse tube (302) faces the interior of the mesh inner tube (102); An electromagnetic pulse valve (303), wherein the electromagnetic pulse valve (303) is installed on the pneumatic pulse tube (302).

4. The self-draining device for an industrial cartridge dust collector according to claim 3, characterized in that: The pneumatic pulling assembly also includes: A connecting pipe (205), wherein two connecting pipes (205) are provided, the two connecting pipes (205) are respectively connected to the two intake ring pipes (204), and the two connecting pipes (205) are both connected to the pneumatic pulse pipe (302); A control valve (206), wherein two control valves (206) are provided, the two control valves (206) are respectively installed on the two connecting pipes (205), and the two control valves (206) work alternately.

5. The self-draining device for an industrial cartridge dust collector according to claim 4, characterized in that: The pneumatic pulling assembly also includes: An exhaust ring pipe (207), wherein two exhaust ring pipes (207) are provided; an exhaust pipe (208), wherein the plurality of the ejection chambers and the reset chamber are all connected to the exhaust pipe (208), the plurality of the exhaust pipes (208) connected to the ejection chambers are connected to one of the exhaust ring pipes (207), and the plurality of the exhaust pipes (208) connected to the reset chambers are connected to another exhaust ring pipe (207); A one-way exhaust valve (209), wherein two one-way exhaust valves (209) are provided, and the two one-way exhaust valves (209) are respectively installed on the two exhaust ring pipes (207).

6. The self-draining device for an industrial cartridge dust collector according to claim 5, characterized in that: The inner frill (105) is provided with a support rib, and the support rib is connected to the pull rod (201).

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