Modularized bag type dust collector

Abstract

The utility model relates to the technical field of modular assembly dust removal, in particular to a modular bag type dust collector, which comprises a plurality of modular box bodies and filter components arranged in the modular box bodies, ultra-low emission filter bags and spring type reinforced bag cages are arranged in the modular box bodies, pulse injection devices are arranged at the upper parts of the ultra-low emission filter bags, and the upper parts of the spring type reinforced bag cages are connected with the pulse injection devices. A smoke inlet and outlet air duct is arranged on the side face of each modular box body, a pneumatic louver valve is arranged on the end face of each smoke inlet and outlet air duct, an ash bucket is arranged at the bottom of each modular box body, and the modular box bodies are the same in structural size and connected through screws. The pulse injection device adopts pulse drainage point-to-point injection, the dust remover adopts a flat strip ultra-low emission filter bag, a spring type reinforced bag cage is adopted, the filter bag and the bag cage are transversely mounted in the modular box bodies, the modular box bodies are connected through bolts and sealing gaskets, the modular box bodies in different numbers are configured, and the dust removal efficiency is improved. The modular box body is freely combined, and installation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of modular assembly dust removal, in particular to a modular bag dust collector. Background Art

[0002] At present, bag filter used for dust collection and dust collection of dust-containing gas in cement plants, steel plants and other industrial production processes is an important environmental protection equipment to achieve industrial smoke dust control and emission standards. Its working principle is: dust-containing gas enters the box from the flue air inlet of the dust collector under the gravitational force of the induced draft fan. Large particles of dust first fall into the ash hopper due to gravity and inertial collision, which plays a role in pre-dust collection. The remaining finer dust is filtered by the filter bags of each filter unit with the air flow, and the dust is retained on the outer surface of the filter bag. The purified gas flows through the filter bag to the bag mouth and then to the clean air chamber, enters the air outlet from the air outlet, and is discharged into the atmosphere by the fan, thereby achieving the purpose of industrial smoke dust control and emission.

[0003] Bag dust collector is the most widely used type of dust collector in cement industry. Bag dust collector has strong applicability, is not affected by dust on resistance, and does not have other pollution problems. The currently used line-jet bag dust collector has high dust removal efficiency and the emission concentration is lower than the national dust emission standard.

[0004] However, large dust collectors cannot be shipped as a whole due to their small size and need to be shipped to the site in pieces for assembly. Due to limited on-site production conditions, the dust collector assembly quality is not high, and problems such as welding leaks and ash leakage are prone to occur. In addition, the on-site installation workload is too large and the safety risk is high. Utility Model Content

[0005] The purpose of the utility model is to provide a modular bag dust collector to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A modular bag dust collector comprises a plurality of modular boxes and a filter assembly arranged in each of the modular boxes, wherein ultra-low emission filter bags and spring-type reinforced bag cages are arranged inside the modular boxes, a pulse spray device is arranged on the upper part of the ultra-low emission filter bags, smoke inlet and outlet ducts are arranged on the sides of the modular boxes, pneumatic shutter valves are arranged on the end faces of the smoke inlet and outlet ducts, an ash hopper is arranged at the bottom of the modular boxes, and the multiple modular boxes have the same structural dimensions and are connected by screws.

[0008] As a preferred solution of the utility model, the ultra-low emission filter bag is arranged in a flat and long strip structure, the ultra-low emission filter bag is located inside the spring-type reinforced bag cage, the spring-type reinforced bag cage is installed in the modular box, and the spring-type reinforced bag cage is arranged in a horizontal structural distribution.

[0009] As a preferred solution of the utility model, the pneumatic shutter valve is connected to the PLC industrial computer equipment via wireless.

[0010] As a preferred solution of the utility model, the smoke inlet and outlet ducts are arranged at the side channels of the modular box body, and each end of the smoke inlet and outlet duct is provided with a wind-distributing pneumatic shutter valve inclined toward the air inlet and having the same width as the air inlet duct.

[0011] As a preferred solution of the utility model, during installation, a protective scaffolding is provided on the outer wall of one side of the plurality of modular boxes, and a maintenance ladder is provided on the protective scaffolding.

[0012] As a preferred solution of the utility model, a dust concentration detection device is installed at the outlet of the ultra-low emission filter bag, and the dust concentration detection device is connected to the PLC industrial computer equipment via wireless.

[0013] As a preferred solution of the utility model, the ultra-low emission filter bag is an ultra-fine fiber gradient filter bag, the ultra-fine fiber fineness is 0.2Dtex~1.0Dtex, and the ultra-low emission filter bag includes an ultra-fine fiber layer and a normal fineness fiber layer, and the ultra-fine fiber layer is attached to the windward surface of the normal fineness fiber layer.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] In view of the problems raised in the background technology, the pulse jet device of the present application adopts pulse drainage point-to-point jetting, and the dust collector adopts flat long strip ultra-low emission filter bags and spring-type reinforced bag cages. The filter bags and bag cages are horizontally installed inside the modular box body. The modular boxes are connected by bolts and sealing gaskets. By configuring different numbers of modular boxes, different air volume requirements of the dust collector can be met. At the same time, the modular boxes can be freely combined according to the space limitations of the equipment site, and the equipment installation does not require hot work, and smoke-free installation can be achieved;

[0016] The structure is simple, and the dust collector can be used for dust removal in places with high dust concentration, large air volume and limited equipment installation space, and can realize smoke-free installation of the dust collector;

[0017] When the dust collector is performing dust removal work, the PLC industrial computer equipment controls the air-distributing pneumatic shutter valve. The dust-containing gas enters the dust collector hopper through the flue gas inlet and outlet ducts and is filtered by the flat long ultra-low emission filter bag, so that the dust is adsorbed on the filter bag. The clean gas is sent out from the flue gas inlet and outlet ducts to complete the dust removal process of the dust-containing gas. When the dust adsorbed by the filter bag reaches a certain thickness, the pulse spray device sprays pressurized gas to self-clean the filter bag.

[0018] During installation, the dust collector equipment model is selected according to the dust collector working air volume and outlet emission concentration, the number of modular boxes is determined, and the structures such as the flue gas inlet and outlet air ducts and ash hoppers are determined according to the number of modular boxes. Finally, the dust collector equipment structure and size are determined. The modular boxes are manufactured as a whole and shipped to the customer site for smoke-free assembly. The structure is simple and can be designed with modular boxes to achieve smoke-free installation of the dust collector on site and ensure the installation quality of the dust collector.

[0019] By setting up flat and long ultra-low emission filter bags and spring-type reinforced bag cages, the filter bag cages can be installed horizontally and dust accumulation on the top of the filter bags can be avoided, thereby achieving ultra-low emissions of the dust collector. The flue gas inlet and outlet ducts and pneumatic shutter valves set on the side of the modular box can realize online and offline blowing control of the dust collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a side view of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of pulse jetting of the utility model;

[0022] Figure 3 This is a schematic diagram of the distribution of the flat long ultra-low emission filter bag and the spring-type reinforced bag cage of the utility model;

[0023] Figure 4 This is the main view of the overall structure of the utility model;

[0024] Figure 5 It is a schematic diagram of the utility model of the air-distributing pneumatic shutter valve.

[0025] In the figure: 1. Modular box; 2. Filter assembly; 3. Smoke inlet and outlet ducts; 4. Pneumatic shutter valve; 5. Ash hopper; 6. Pulse spray device; 7. Ultra-low emission filter bag; 8. Spring-type reinforced bag cage; 9. Screws. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the embodiments of the present invention.

[0027] Example

[0028] See also Figure 1-5The utility model provides a technical solution: a modular bag dust collector, including multiple modular boxes 1 and a filter assembly 2 arranged in each modular box 1, an ultra-low emission filter bag 7 and a spring-type reinforced bag cage 8 are arranged inside the modular box 1, a pulse spray device 6 is arranged on the upper part of the ultra-low emission filter bag 7, a smoke inlet and outlet air duct 3 is arranged on the side of the modular box 1, a pneumatic shutter valve 4 is arranged on the end face of the smoke inlet and outlet air duct 3, an ash hopper 5 is arranged at the bottom of the modular box 1, and multiple modular boxes 1 have the same structural size, and multiple The modular box 1 is connected by screws 9; the ultra-low emission filter bag 7 is arranged in a flat and long strip structure, the ultra-low emission filter bag 7 is located inside the spring-type reinforced bag cage 8, the spring-type reinforced bag cage 8 is installed in the modular box 1, and the spring-type reinforced bag cage 8 is arranged in a horizontal structure distribution; the ultra-low emission filter bag 7 is an ultra-fine fiber gradient filter bag, the ultra-fine fiber fineness is 0.2Dtex~1.0Dtex, the ultra-low emission filter bag 7 includes an ultra-fine fiber layer and a normal fineness fiber layer, and the ultra-fine fiber layer is attached to the windward side of the normal fineness fiber layer.

[0029] It should be noted that, in this embodiment, the modular boxes 1 are connected by bolts 9 and sealing gaskets. By configuring different numbers of modular boxes 1, different air volume requirements of the dust collector can be met. At the same time, the modular boxes can be freely combined according to the space limitations of the equipment site, and the equipment installation does not require hot work, and smoke-free installation can be achieved;

[0030] Furthermore, during installation, the dust collector equipment model is selected according to the dust collector working condition air volume and outlet emission concentration, the number of modular boxes 1 is determined, and the structures such as the flue gas inlet and outlet air ducts 3 and the ash hopper 5 are determined according to the number of modular boxes 1, and finally the dust collector equipment structure and size are determined. The modular box 1 is manufactured as a whole and then shipped to the customer site for smoke-free assembly. The structure is simple and can be designed through the modular box 1, while achieving smoke-free installation of the dust collector on site and ensuring the installation quality of the dust collector;

[0031] Furthermore, modular bag dust collectors are not restricted by on-site production and conditions, the dust collector assembly quality is high, and it is not easy to have problems such as welding leakage and ash leakage. In addition, the on-site installation work intensity is low, and the safety risk factor is low;

[0032] Furthermore, the dust collector adopts a flat long ultra-low emission filter bag 7 and a spring-type reinforced bag cage 8. The filter bag and the bag cage are horizontally installed inside the modular box 1. By arranging the flat long ultra-low emission filter bag 7 and the spring-type reinforced bag cage 8, the filter bag cage can be horizontally installed and dust accumulation on the upper part of the filter bag can be avoided, thereby achieving ultra-low emission of the dust collector;

[0033] Furthermore, the ultra-low emission filter bag 7 includes an ultra-fine fiber layer and a fiber layer of ordinary fineness, and the ultra-fine fiber layer is attached to the windward surface of the fiber layer of ordinary fineness to ensure the dust removal and filtering effect, and can ensure low dust emissions.

[0034] See also Figure 1 , 3 and 4, the smoke inlet and outlet ducts 3 are arranged at the side channels of the modular box body 1, and each end of the smoke inlet and outlet duct 3 is respectively provided with a pneumatic shutter valve 4 which is inclined towards the air inlet and has the same width as the air inlet duct; the pneumatic shutter valve 4 is connected to the PLC industrial computer equipment via wireless; during installation, protective scaffolding is provided on the outer wall of one side of multiple modular boxes 1, and a maintenance escalator is provided on the protective scaffolding; a dust concentration detection device is installed at the outlet of the ultra-low emission filter bag 7, and the dust concentration detection device is connected to the PLC industrial computer equipment via wireless.

[0035] It should be noted that, in this embodiment, a smoke inlet and outlet duct 3 is provided on the side of the modular box 1, and a pneumatic shutter valve 4 is connected to the PLC industrial computer device via wireless. The end surface of the smoke inlet and outlet duct 3 is controlled by the pneumatic shutter valve 4 for online and offline spraying of the dust collector, which is easy to operate.

[0036] Furthermore, when the dust collector is performing dust removal work, the PLC industrial computer equipment controls the air-distributing pneumatic shutter valve 4, and the dust-containing gas enters the dust collector ash hopper 5 through the flue gas inlet and outlet duct 3 and is filtered by the flat long ultra-low emission filter bag 7, so that the dust is adsorbed on the filter bag, and the clean gas is sent out from the flue gas inlet and outlet duct 3, thereby completing the dust removal process of the dust-containing gas. When the dust adsorbed by the filter bag reaches a certain thickness, the pulse blowing device 6 sprays pressurized gas to perform self-cleaning of the filter bag. Through the modular box body 1 design, the box body size is smaller than the transportation limit size, and can be mass-produced and shipped. At the same time, the dust collector can be installed on site without smoke and dust and the installation quality of the dust collector can be guaranteed. The structure is simple, and the dust collector can adapt to dust removal in occasions with high dust concentration, large processing air volume and limited equipment installation space, and the dust collector can be installed without smoke and dust.

[0037] The utility model workflow:

[0038] During installation, the dust collector equipment model is selected according to the dust collector working air volume and outlet emission concentration, the number of modular boxes 1 is determined, and the structures such as the flue gas inlet and outlet air ducts 3 and the ash hopper 5 are determined according to the number of modular boxes 1. Finally, the dust collector equipment structure and size are determined. The modular box 1 is manufactured as a whole and then shipped to the customer site for smoke-free assembly. The structure is simple and can be designed through the modular box 1. At the same time, smoke-free installation of the dust collector is achieved on site and the installation quality of the dust collector is guaranteed;

[0039] When the dust collector is performing dust removal work, the PLC industrial computer equipment controls the air-distributing pneumatic shutter valve 4. The dust-containing gas enters the dust collector hopper 5 through the flue gas inlet and outlet ducts 3 and is filtered by the flat long ultra-low emission filter bag 7, so that the dust is adsorbed on the filter bag, and the clean gas is sent out from the flue gas inlet and outlet ducts 3, thereby completing the dust removal process of the dust-containing gas. When the dust adsorbed by the filter bag reaches a certain thickness, the pulse blowing device 6 sprays pressurized gas to perform self-cleaning of the filter bag. The ultra-low emission filter bag 7 includes an ultra-fine fiber layer and a normal fineness fiber layer. The ultra-fine fiber layer is attached to the windward side of the normal fineness fiber layer to ensure the dust removal and filtering effect. It can ensure low dust emissions and simple structure. The dust collector can adapt to dust removal in occasions such as high dust concentration, large processing air volume and limited equipment installation space, and realize smoke-free installation of the dust collector.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A modular bag filter, comprising a plurality of modular boxes (1) and a filter assembly (2) arranged in each of the modular boxes (1), characterized in that: An ultra-low emission filter bag (7) and a spring-type reinforced bag cage (8) are arranged inside the modular box (1); a pulse spray device (6) is arranged on the upper part of the ultra-low emission filter bag (7); a smoke inlet and outlet duct (3) is arranged on the side of the modular box (1); a pneumatic shutter valve (4) is arranged on the end face of the smoke inlet and outlet duct (3); an ash hopper (5) is arranged at the bottom of the modular box (1); a plurality of modular boxes (1) have the same structural dimensions, and the plurality of modular boxes (1) are connected by screws (9).

2. A modular bag dust collector according to claim 1, characterized in that: The ultra-low emission filter bag (7) is arranged in a flat and long strip structure. The ultra-low emission filter bag (7) is located inside the spring-type reinforced bag cage (8). The spring-type reinforced bag cage (8) is installed in the modular box (1). The spring-type reinforced bag cage (8) is arranged in a horizontal structural distribution.

3. A modular bag dust collector according to claim 1, characterized in that: The pneumatic shutter valve (4) is connected to the PLC industrial control computer equipment via wireless.

4. A modular bag dust collector according to claim 1, characterized in that: The smoke inlet and outlet ducts (3) are arranged at the side channels of the modular box (1), and each end of the smoke inlet and outlet ducts (3) is provided with an air-distributing pneumatic shutter valve (4) which is inclined toward the air inlet and has the same width as the air inlet duct.

5. A modular bag dust collector according to claim 1, characterized in that: During installation, a plurality of the modular boxes (1) are provided with protective scaffolding on one side outer wall, and a maintenance ladder is provided on the protective scaffolding.

6. A modular bag dust collector according to claim 1, characterized in that: A dust concentration detection device is installed at the outlet of the ultra-low emission filter bag (7), and the dust concentration detection device is connected to the PLC industrial computer equipment via wireless.

7. A modular bag dust collector according to claim 1, characterized in that: The ultra-low emission filter bag (7) is an ultra-fine fiber gradient filter bag, the ultra-fine fiber fineness is 0.2Dtex-1.0Dtex, and the ultra-low emission filter bag (7) comprises an ultra-fine fiber layer and a normal fineness fiber layer, wherein the ultra-fine fiber layer is attached to the windward surface of the normal fineness fiber layer.

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