Chamber differential pressure ash removal device of bag type dust collector

Abstract

The utility model discloses a bag type dust collector compartment differential pressure ash removal device, which is characterized in that the top of a box body is provided with an air purification chamber, the air purification chamber is internally provided with a blowing pipe system extending to the outside of the air purification chamber, the side surface of the blowing pipe system is provided with an air outlet switching valve, the side surface of the air outlet switching valve is provided with an air outlet sampling point, and the air outlet sampling point is provided with an air inlet and an air outlet. The air outlet sampling point is connected to a differential pressure transmitter through an air outlet connecting pipe, the differential pressure transmitter is connected to the air inlet sampling point through an air inlet connecting pipe, a clean gas chamber and a dusty gas chamber which are separated by a partition plate are arranged in the box body, and the bottom of the dusty gas chamber is connected to an ash hopper through a pipeline. The low-resistance and low-energy-consumption normal operation of the dust remover can be ensured, the pressure value of each bin of the dust remover needs to be detected at any time and fed back to a PLC (Programmable Logic Controller), and then the pressure difference of the sub-chambers is started through a PLC system to clean dust.

Description

Technical Field

[0001] The utility model belongs to the technical field of the chamber differential pressure dust cleaning device of a bag filter, and particularly relates to a chamber differential pressure dust cleaning device of a bag filter. Background Art

[0002] In recent decades, with the all-round promotion of China's economic construction, the continuous progress of science and technology, and the increasing enhancement of people's environmental protection awareness, as the bag filter has stable operation and high dust removal efficiency, as an efficient environmental protection dust removal device and production process equipment, it has been widely used in more and more fields. However, in China, the dust cleaning devices of dust collectors generally adopt fixed time or fixed resistance, or both alternately. These dust cleaning devices require a large amount of compressed air, and frequent dust cleaning causes unnecessary damage to the filter bags, greatly reducing the service life of the filter bags. Therefore, it is very urgent to develop a new dust cleaning device.

[0003] Based on the design concepts of low investment, low operating cost, convenient maintenance and overhaul, etc., our company draws on advanced technologies at home and abroad and designs and develops a chamber differential pressure dust cleaning device for a bag filter. By adopting this technology, it can accurately realize the automatic detection and dust cleaning of the differential pressure of each chamber of the bag filter. Content of the Utility Model

[0004] To solve the problems existing in the prior art, the utility model provides a chamber differential pressure dust cleaning device for a bag filter, which can ensure the normal operation of the dust collector with low resistance and low energy consumption, and needs to detect the pressure value of each chamber of the dust collector at any time and feedback it to the PLC, and then start the chamber differential pressure dust cleaning through the PLC system.

[0005] To achieve the above object, the utility model provides the following technical solution: a chamber differential pressure dust cleaning device for a bag filter, including a box body, a ash hopper is arranged at the bottom of the box body, filter bags and bag cages adapted to the filter bags are arranged inside the box body, and it is characterized in that: a clean gas chamber is arranged at the top of the box body, a blowpipe system extending outside the clean gas chamber is arranged inside the clean gas chamber, an air outlet switching valve is arranged on the side of the blowpipe system, an air outlet sampling point is arranged on the side of the air outlet switching valve, the air outlet sampling point is connected to a differential pressure transmitter through an air outlet connecting pipe, the differential pressure transmitter is connected to an air inlet sampling point through an air inlet connecting pipe, a clean gas chamber and a dust-containing gas chamber separated by a partition are arranged inside the box body, the clean gas chamber is communicated with the clean gas chamber, the dust-containing gas chamber is communicated with the box body, the bottom of the dust-containing gas chamber is connected to the ash hopper through a pipeline, and an air inlet air regulating valve is arranged at a position close to the ash hopper inside the pipeline, an air inlet sampling point is arranged at the air inlet air regulating valve, and the differential pressure transmitter is electrically connected to a PLC control and display system.

[0006] Preferably, the PLC control and display system is electrically connected to a remote detection device, a digital display device and an audible and visual alarm.

[0007] Preferably, a fluorescent agent automatic spraying device is respectively arranged in the clean gas chamber, the box body, the clean gas chamber and the dusty gas chamber.

[0008] Preferably, an observation window is arranged on the box body.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] It has functions such as remote detection, digital display, sound and light alarm, etc., with a relatively high degree of automation and low operation cost.

[0011] The device is equipped with a fluorescent agent automatic spraying device. When it detects that the differential pressure value of a certain chamber of the bag filter fluctuates greatly, the PLC control display system starts the spraying device to spray fluorescent agent into this chamber to detect the specific damaged position. The detection method is advanced, reliable and fast.

[0012] The device is provided with an observation window to observe the damage condition of the filter bag, so as to carry out emergency repair in time and ensure the normal operation of the dust collector.

[0013] The device has an air distribution function. In the initial stage of the operation of the dust collector, the opening degree of the air inlet and air distribution valve of each chamber is controlled through the differential pressure value of each chamber detected by this device, so as to ensure that the air volume entering each chamber is the same, so as to achieve the purpose of air distribution. Therefore, the internal components of the bag filter can always operate under the same load, greatly prolonging the service life of the internal components of the bag filter, thereby reducing the operation cost of the dust collector. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of the utility model.

[0015] In the figure: 1 box body, 2 ash hopper, 3 clean gas chamber, 4 pulse jet pipe system, 5 filter bag, 6 cage, 7 air inlet and air distribution valve, 8 air outlet switching valve, 9 air inlet sampling point, 10 air inlet connecting pipe, 11 air outlet sampling point, 12 air outlet connecting pipe, 13 differential pressure transmitter, 14 PLC control display system. Detailed Embodiments

[0016] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0017] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. Embodiment

[0018] See the appendix Figure 1 As shown, a differential pressure pulse jet cleaning device for a bag filter chamber includes a box body 1. A dust hopper 2 is provided at the bottom of the box body 1. Filter bags 5 and corresponding cage 6 are arranged inside the box body 1. It is characterized in that: a clean gas chamber 3 is provided at the top of the box body 1. A pulse jet pipe system 4 extending outside the clean gas chamber 3 is arranged inside the clean gas chamber 3. An air outlet switching valve 8 is arranged on the side of the pulse jet pipe system 4. An air outlet sampling point 11 is arranged on the side of the air outlet switching valve 8. The air outlet sampling point 11 is connected to a differential pressure transmitter 13 through an air outlet connecting pipe 12. The differential pressure transmitter 13 is connected to an air inlet sampling point 9 through an air inlet connecting pipe 10. A clean gas chamber and a dust-containing gas chamber separated by a partition are arranged inside the box body 1. The clean gas chamber is communicated with the clean gas chamber, and the dust-containing gas chamber is communicated with the box body. The bottom of the dust-containing gas chamber is connected to the dust hopper 2 through a pipeline, and an air inlet air regulating valve 7 is arranged at a position close to the dust hopper 2 in the pipeline. The air inlet sampling point 9 is arranged at the air inlet air regulating valve 7. The differential pressure transmitter 13 is electrically connected to a PLC control and display system 14.

[0019] This device provides a practical cleaning device for the widely used bag filter, with low device cost, high automation degree, advanced technology, and energy conservation and consumption reduction.

[0020] Preferably, the PLC control and display system 14 is electrically connected to a remote detection device, a digital display device, and an audible and visual alarm.

[0021] Preferably, fluorescent agent automatic spraying devices are respectively arranged in the clean gas chamber 3, the box body 1, the clean gas chamber, and the dust-containing gas chamber. When it is detected that the differential pressure value of a certain chamber of the bag filter fluctuates greatly, the PLC control and display system starts the spraying device to spray fluorescent agent into the chamber to detect the specific damaged position.

[0022] Preferably, an observation window is arranged on the box body 1 to observe the damage condition of the filter bag, so as to perform timely and accurate emergency repair to ensure the normal operation of the dust collector.

[0023] It has the function of equalizing air flow. In the initial stage of the operation of the dust collector, the opening degree of the air inlet regulating valve of each chamber is controlled according to the pressure difference value detected by this device for each chamber, so as to ensure that the air volume entering each chamber is the same, and achieve the purpose of equalizing air flow.

[0024] The chamber differential pressure dust cleaning device of a bag type dust collector of the present utility model is widely applicable to the bag type dust collectors required for the treatment of industrial waste gas with serious pollution in metallurgy, chemical industry, coal, building materials, paper making, non-ferrous metals, etc.

[0025] Working principle: An air inlet regulating valve 7 is provided for each chamber. An air inlet sampling point 9 is provided on the pipeline connecting the ash hopper 2. The air inlet sampling point 9 is connected to the inlet of a differential pressure transmitter 13 through an air inlet connecting pipe 10; An air outlet sampling point 11 is provided beside the air outlet switching valve 8 of each chamber in the clean gas chamber 3. The air outlet sampling point 11 is connected to the outlet of the differential pressure transmitter 13 through an air outlet connecting pipe 12; The differential pressure transmitters 13 of all chambers are connected to a PLC control and display system 14; A pressure value is uniformly set for each chamber of the dust collector. When the pressure value of a certain chamber of the dust collector is higher than the set pressure value, the dust cleaning device of this chamber is immediately started. This device provides a practical dust cleaning method for the widely used bag type dust collector, which can not only ensure that the pressure values of each chamber of the dust collector always remain consistent, operate uniformly and stably, but also reduce energy consumption, save production costs and create certain economic benefits.

[0026] The above has shown and described the basic principles, main features and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present utility model; Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model, and any reference signs in the claims should not be regarded as limiting the claimed rights.

[0027] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments understandable by those skilled in the art.

Claims

1. A bag-type dust collector chamber pressure difference cleaning device, comprising a box body, a ash hopper is provided at the bottom of the box body, and a filter bag and a bag cage adapted thereto are provided inside the box body, characterized in that: A clean air chamber is provided on the top of the box body, and a blowpipe system is provided in the clean air chamber and extends to the outside of the clean air chamber. An air outlet switching valve is provided on the side of the blowpipe system, and an air outlet sampling point is provided on the side of the air outlet switching valve. The air outlet sampling point is connected to the differential pressure transmitter through the air outlet connecting pipe, and the differential pressure transmitter is connected to the air inlet sampling point through the air inlet connecting pipe. A clean gas chamber and a dusty gas chamber separated by a partition are provided inside the box body, the clean gas chamber is connected to the clean air chamber, the dusty gas chamber is connected to the box body, the bottom of the dusty gas chamber is connected to the ash hopper through a pipeline, and an air inlet regulating valve is provided near the ash hopper in the pipeline, an air inlet sampling point is provided at the air inlet regulating valve, and the differential pressure transmitter is electrically connected to the PLC control display system.

2. According to claim 1, a bag filter chamber pressure difference cleaning device is characterized in that: The PLC control display system is electrically connected to the remote detection device, the digital display device, and the sound and light alarm.

3. According to claim 1, a bag filter chamber pressure difference cleaning device is characterized in that: The clean air chamber, the box body, the clean gas chamber and the dusty gas chamber are respectively provided with automatic fluorescent agent spraying devices.

4. According to claim 1, a bag filter chamber pressure difference cleaning device is characterized in that: The box body is provided with an observation window.

Images