Low-pressure pulse bag type dust collector

Abstract

The utility model relates to the technical field of dust collectors, in particular to a low-pressure pulse bag type dust collector. The utility model provides a low-pressure pulse bag type dust collector which comprises a frame body used for playing a foundation supporting role, a filtering assembly used for filtering semi-coke dust in air is arranged on the upper half portion of the frame body, and a collecting assembly used for collecting the semi-coke dust filtered out by the filtering assembly is arranged on the lower half portion of the frame body. The top of the frame body is additionally provided with a cleaning assembly for cleaning the filtering assembly in an intermittent operation pulse type cleaning mode; due to the fact that the dust collector is provided with the filtering assembly, the collecting assembly and the cleaning assembly, filtering and collecting operation of semi-coke dust can be achieved through the filtering assembly and the collecting assembly, and the problems that in the prior art, when a submerged arc furnace combusts semi-coke powder, a large amount of semi-coke dust polluting the environment is prone to being generated, and the semi-coke dust is prone to being polluted are solved through the cleaning assembly. And the loss amount of the semi-coke powder is also increased.

Description

Technical Field

[0001] The present application relates to the technical field of dust collectors, and in particular to a low-pressure pulse bag dust collector. Background Art

[0002] With the improvement of environmental protection requirements, dust emissions generated in industrial production processes are strictly restricted. Especially in the metallurgical industry, when the submerged arc furnace burns blue coke powder as fuel, a large amount of blue coke dust will be generated. This dust not only pollutes the environment, but also may affect the respiratory health of operators, and also increase the loss of blue coke powder. Utility Model Content

[0003] The problem to be solved by the present application is that when burning blue coke powder, the existing ore-fired furnace not only easily generates a large amount of blue coke dust that pollutes the environment, but also increases the loss of blue coke powder.

[0004] In order to solve the above-mentioned technical problems, the present application provides a low-pressure pulse bag dust collector, including a frame for serving as a basic support, the upper half of the frame is arranged with a filter assembly for filtering lignite dust in the air, the lower half of the frame is arranged with a collection assembly for collecting the lignite dust filtered by the filter assembly, and a cleaning assembly is added to the top of the frame for cleaning the filter assembly using an intermittent pulse cleaning method.

[0005] Since the dust collector of the present application is designed with a filtering component, a collecting component and a cleaning component, it is possible to filter and collect the lignite dust through the filtering component and the collecting component, and to clean the component, thereby solving the problem that when burning lignite powder in the prior art electric arc furnace, a large amount of lignite dust that pollutes the environment is easily generated, and the loss of lignite powder is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a front view structural schematic diagram of an embodiment.

[0007] Figure 2 Schematic diagram of the top view of the structure of the embodiment.

[0008] Figure 3 for Figure 1 Schematic diagram of the structure at AA in the middle.

[0009] Figure 4 for Figure 1 Schematic diagram of the structure facing the direction of point B.

[0010] Figure 5 for Figure 1 Schematic diagram of the structure at CC in the middle.

[0011] Figure 6 for Figure 3 Schematic diagram of the structure at DD in the figure.

[0012] Figure 7 for Figure 1 Schematic diagram of the structure at EE.

[0013] In the figure: 1. air pipe; 2. air valve; 3. air storage tank; 4. box; 5. ash hopper; 6. conveyor; 7. frame; 8. filter bag; 9. differential pressure transmitter; 10. ladder; 11. feeder. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. Example

[0015] The present application relates to a low-pressure pulse bag dust collector, such as Figure 1-7 As shown, the dust collector includes a frame 7 for serving as a basic support, the upper half of the frame 7 is arranged with a filter assembly for filtering lignite dust in the air, and the lower half of the frame 7 is arranged with a collection assembly for collecting the lignite dust filtered out by the filter assembly. As the use time increases, the surface of the filter assembly will experience a decrease in filtering efficiency due to the adhesion of a large amount of lignite dust. Therefore, a cleaning assembly for pulse cleaning the filter assembly is added to the top of the frame 7.

[0016] The filter assembly includes a box body 4 and a filter bag 8. The box body 4 is arranged on the upper half of the frame body 7 and fixedly connected thereto. Rectangular air flow inlets and outlets are evenly distributed on both sides of the box body 4. Filter bags 8 for filtering blue carbon dust are evenly distributed inside the box body 4. In order to ensure the filtering effect of the filter bag 8, the filter bag 8 is an elastic ring filter bag 8 with a cage frame.

[0017] The collection assembly includes an ash hopper 5, a conveyor 6 and a feeder 11. The ash hopper 5 is arranged at the lower half of the frame 7 and is fixedly connected thereto. A conveyor 6 is arranged horizontally below the ash hopper 5 for centralized conveying and discharging of the collected blue carbon dust. The conveyor 6 is a screw conveyor 6 driven by a motor and having a vertically arranged feeder port at one end. A feeder 11 capable of controlling the feeder amount is arranged at the feeder port. The feeder 11 is a star-shaped feeder 11 with uniform and continuous discharge operation. In order to facilitate the dust It moves rapidly downward along the side wall of the ash hopper 5, therefore, the ash hopper 5 as a whole presents a stepped structure which is wide at the top and narrow at the bottom, so that after the dust adheres to the upper part of the inner wall of the ash hopper 5, it can move rapidly downward along the inner wall under the weight of its own weight. The inclination angle of the inner wall of the ash hopper 5 is 100-120°, preferably 113° which is compatible with the conveyor 6. In order to facilitate the normal cleaning and inspection operations inside the ash hopper 5, an inspection door panel which is detachably connected to it and made of transparent material is arranged on the upper part of the side wall of the ash hopper 5.

[0018] The cleaning assembly includes an air tank 3, an air pipe 1, an air valve 2 and a pressure differential transmitter 9. The air tank 3 is fixedly arranged at one end of the top of the frame 7. An air pipe 1 connected to the air tank 3 for conveying compressed gas is horizontally placed on one side of the air tank 3. In order to fully flush the filter bag 8 inside the box 4, multiple groups of air valves 2 are evenly and spacedly arranged on the upper part of the air pipe 1 to penetrate into the box 4 and flush the filter bag 8 with compressed air. In order to effectively save the gas source and not interfere with the dust removal operation of the dust collector, the cleaning assembly is an intermittent pulse cleaning method. For this reason, a device capable of detecting the inside and outside of the filter bag 8 is arranged on the upper part of the box 4. The differential pressure transmitter 9 of the wind pressure condition, when the value change of the differential pressure transmitter 9 exceeds the preset value, the air valve 2 will start to perform air blowing and cleaning operation on the filter bag 8 at this moment. The air valve 2 is composed of a lifting valve for controlling the gas flow direction and a pulse valve for controlling the intermittent air supply. In order to ensure the smooth operation of the cleaning component, an air source triplet consisting of an air filter, a pressure reducing valve and an oil mist collector can be further provided on the upper part of the air pipe 1, so that impurities or moisture in the compressed air can be removed through the air filter, and the pressure of the compressed air can be adjusted and stabilized through the pressure reducing valve to keep the air source pressure constant, and the necessary lubrication operation can be provided for the moving parts in the pneumatic equipment through the oil mist collector.

[0019] In order to facilitate the inspection and maintenance of the cleaning assembly on the top of the frame 7, a ladder 10 is arranged on one side of the frame 7 for easy climbing.

[0020] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0021] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0022] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A low-pressure pulse bag dust collector, comprising a frame for basic support, characterized in that: The upper half of the frame is arranged with a filter assembly for filtering lignite dust in the air, the lower half of the frame is arranged with a collection assembly for collecting the lignite dust filtered by the filter assembly, and a cleaning assembly is added to the top of the frame for cleaning the filter assembly in an intermittent pulse cleaning manner; the cleaning assembly includes an air tank, an air pipe, an air valve and a differential pressure transmitter, the air tank is fixedly arranged at one end of the top of the frame, and an air pipe connected to the air tank for conveying compressed gas is horizontally placed on one side of the air tank, and multiple groups of air valves that penetrate into the interior of the box and use compressed air to flush the filter bags are evenly and spaced apart on the upper part of the air pipe, and a differential pressure transmitter that can detect the wind pressure inside and outside the filter bag is arranged on the upper part of the box.

2. A low-pressure pulse bag dust collector according to claim 1, characterized in that: The filter assembly includes a box body and filter bags. The box body is arranged on the upper half of the frame body and fixedly connected thereto. Filter bags for filtering blue carbon dust are evenly arranged inside the box body.

3. A low-pressure pulse bag dust collector according to claim 2, characterized in that: Rectangular air inlets and outlets are evenly distributed on both sides of the box.

4. A low-pressure pulse bag dust collector according to claim 1, characterized in that: The collecting assembly includes an ash hopper, a conveyor and a feeder. The ash hopper is arranged at the lower half of the frame and fixedly connected thereto. A horizontally arranged conveyor is arranged below the ash hopper for centrally conveying and discharging the collected lignite dust. One end of the conveyor has a vertically arranged feeder port, and a feeder capable of controlling the discharge amount is arranged at the feeder port.

5. A low-pressure pulse bag dust collector according to claim 4, characterized in that: The ash hopper has an overall terrace-like structure that is wide at the top and narrow at the bottom.

6. A low-pressure pulse bag dust collector according to claim 4, characterized in that: The feeder is a star-shaped feeder with uniform and continuous discharge operation.

7. A low-pressure pulse bag dust collector according to claim 4, characterized in that: The inclination angle of the inner wall of the ash hopper is 100-120°.

8. A low-pressure pulse bag dust collector according to claim 4, characterized in that: An inspection door panel which is detachably connected to the ash hopper and is made of a transparent material is arranged on the upper part of the side wall of the ash hopper.

9. A low-pressure pulse bag dust collector according to claim 1, characterized in that: A ladder is also arranged on one side of the frame for easy climbing operations.

Images