Method and system for dusting a filter cartridge of a gas filter

Abstract

This invention discloses a method and system for dust removal from a gas filter element, relating to the field of gas cleaning equipment technology. One end of the gas filter element is fixed to a working platform via a rotatable component. An air compressor's obliquely shaped exhaust nozzle is inserted into the interior of the filter element from the other end. The working power of the air compressor is determined according to the filter element's model, and the compressor is controlled to operate at that power. This causes air to move from the inside of the filter element to the outside at a preset pressure, pushing the filter element to rotate relative to the working platform. The outward thrust of the air and the centrifugal force of the rotating filter element efficiently remove dust from inside the filter element, improving the dust removal efficiency and effect of the gas filter. This eliminates the need for filter element replacement or manual cleaning, reducing the maintenance cost of the gas filter.

Description

Technical Field

[0001] This invention relates to the field of gas cleaning equipment technology, and in particular to a method and system for dust removal from a gas filter element. Background Technology

[0002] Gas filters are an indispensable piece of equipment in pipelines transporting media. They are used to remove impurities from the media, protecting valves and equipment and reducing maintenance costs. When dust accumulates heavily in the filter element of a gas filter, the gas flow rate in the system decreases, affecting the continuous and stable operation of the station's processes, increasing energy consumption, and thus raising production costs. Inadequately cleaned gas also increases the environmental burden.

[0003] Currently, the method for dealing with dust accumulation in gas filter cartridges is to open the filter's drain valve, using the pressure within the gas pipeline to carry away the dust, which is then discharged into the air from a venting tower at the plant. However, this method only cleans dust from the surface of the filter cartridge; it is ineffective at cleaning dust inside the cartridge. Often, after a few hours of operation, the increased pressure differential necessitates repeated draining, disrupting continuous production. To improve filtration, the gas filter cartridges must be replaced or removed for cleaning. However, replacing cartridges is expensive and requires solid waste disposal, while manual cleaning is labor-intensive and inefficient. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a method and system for dust removal from gas filter cartridges, which can improve the dust removal efficiency and effect of gas filter cartridges and reduce the maintenance costs of gas filters.

[0005] On one hand, embodiments of the present invention provide a method for dust removal from a gas filter element, comprising the following steps:

[0006] One end of the gas filter element is fixed to the working platform by a rotatable component;

[0007] An air compressor outlet nozzle is inserted into the interior of the filter element from the other end, wherein the outlet of the outlet nozzle is obliquely cut.

[0008] The operating power of the air compressor is determined according to the filter element model.

[0009] The air compressor is controlled to operate at the specified power, so that air moves from the inside of the filter element to the outside of the filter element at a preset pressure, and drives the filter element to rotate relative to the working platform.

[0010] According to some embodiments of the present invention, determining the operating power of the air compressor based on the filter element model includes the following steps:

[0011] The working power of the air compressor can be obtained by referring to the model power comparison table based on the filter element model.

[0012] The model power comparison table is obtained in the following way:

[0013] One end of each test filter element of different models is fixed to the working platform by a rotatable component. The air outlet spray gun of the air compressor is inserted into the interior of the test filter element from the other end. The power of the air compressor is adjusted from small to large until the test filter element rotates at a preset speed. The power and the filter element model at this time are recorded to obtain the model power comparison table.

[0014] According to some embodiments of the present invention, the dust removal method for the filter element of the gas filter further includes the following steps:

[0015] The length of the air compressor's outlet spray gun is adjusted according to the length of the filter element.

[0016] According to some embodiments of the present invention, the gas filter is placed on a working platform inside the housing, and the bottom of the housing is connected to a dust collection box.

[0017] According to some embodiments of the present invention, the dust removal method for the filter element of the gas filter further includes the following steps:

[0018] Obtain the first pressure value at the inlet of the dust collection box;

[0019] Obtain the second pressure value at the air compressor outlet channel;

[0020] When the difference between the second pressure value and the first pressure value is less than a preset difference, the air compressor is controlled to stop working.

[0021] On the other hand, embodiments of the present invention also provide a filter element dust removal system for a gas filter, including a working platform, a rotatable part, an air compressor and a control device, wherein the air compressor includes an air outlet spray gun, the air outlet of the air outlet spray gun is obliquely cut, and the control device is connected to the air compressor;

[0022] The rotatable component is fixedly mounted on the working platform, and the rotatable component is used to rotatably fix one end of the filter element of the gas filter on the working platform;

[0023] The air spray gun is used to extend into the interior of the filter element from the other end of the filter element;

[0024] The control device is used to determine the working power of the air compressor according to the filter element model, control the air compressor to work at the working power, so that air moves from the inside of the filter element to the outside of the filter element at a preset pressure, and pushes the filter element to rotate relative to the working platform.

[0025] According to some embodiments of the present invention, the rotatable component is a planar bearing, the bottom of the planar bearing is fixed on the working platform, and one end of the filter element is fixed on the top of the planar bearing.

[0026] According to some embodiments of the present invention, the filter cartridge dust removal system of the gas filter further includes a housing and a dust collection box, the working platform is located inside the housing, and the bottom of the housing is connected to the dust collection box.

[0027] According to some embodiments of the present invention, a first pressure sensor is provided at the inlet of the dust collection box, and a second pressure sensor is provided at the outlet of the air compressor;

[0028] The first pressure sensor is used to monitor the first pressure value at the inlet of the dust collection box;

[0029] The second pressure sensor is used to monitor the second pressure value at the air compressor outlet passage;

[0030] The control device is also used to control the air compressor to stop working when the difference between the second pressure value and the first pressure value is less than a preset difference.

[0031] According to some embodiments of the present invention, the dust collection box is a transparent box.

[0032] The above-described technical solution of the present invention has at least one of the following advantages or beneficial effects: one end of the filter element of the gas filter is fixed to the working platform by a rotatable component, and the air outlet nozzle with an oblique cut shape of the air compressor is inserted into the interior of the filter element from the other end of the filter element. The working power of the air compressor is determined according to the filter element model and the air compressor is controlled to work at the working power so that air moves from the interior of the filter element to the exterior of the filter element at a preset pressure, and pushes the filter element to rotate relative to the working platform. Thus, the dust inside the filter element is efficiently removed by means of the outward thrust of the air and the centrifugal force when the filter element rotates, thereby improving the dust removal efficiency and effect of the gas filter element. There is no need to replace the filter element or perform manual cleaning, thus reducing the maintenance cost of the gas filter. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the filter element dust removal system of the gas filter provided in an embodiment of the present invention;

[0034] Figure 2This is a top view of the filter element provided in this embodiment of the invention when it is placed on the working platform for dust removal;

[0035] Figure 3 This is a flowchart of the dust removal method for the filter element of a gas filter provided in an embodiment of the present invention. Detailed Implementation

[0036] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar originals or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0037] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0038] In the description of this invention, the use of terms such as "first," "second," etc., is merely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0039] Reference Figure 1 The gas filter cartridge dust removal system of this embodiment includes a working platform 110, a rotatable component 120, an air compressor 130, and a control device (not shown in the figure). The air compressor includes an air outlet nozzle 131 with an obliquely cut outlet. The control device is connected to the air compressor. The connection between the control device and the air compressor can be a wireless connection such as a serial port or a wireless connection such as Bluetooth, through which signal transmission is performed.

[0040] A rotatable component is fixedly mounted on the work platform, and is used to rotatably fix one end of the gas filter element 140 to the work platform. An air spray gun is used to extend into the interior of the filter element from the other end. A control device is used to determine the operating power of the air compressor according to the filter element model, and controls the air compressor to operate at the operating power, so that air moves from the interior to the exterior of the filter element at a preset pressure, driving the filter element to rotate relative to the work platform.

[0041] In this embodiment, one end of the gas filter element is fixed to the working platform by a rotatable component, and the air compressor's obliquely shaped exhaust nozzle is as follows: Figure 2As shown, the air compressor extends into the interior of the filter element. When the compressor operates at a certain power, air moves from the inside of the filter element to the outside at a certain pressure. Because the outlet spray gun is obliquely shaped, it ensures that the outlet spray is reasonably spaced from the bottom of the filter element and pushes the filter element to rotate relative to the working platform. Thus, the dust inside the filter element can be efficiently removed by using the outward thrust of the air and the centrifugal force of the rotating filter element. This improves the dust removal efficiency and effect of the gas filter element, eliminating the need to replace the filter element or perform manual cleaning, thereby reducing the maintenance cost of the gas filter.

[0042] In some embodiments, the working platform serves to fix the filter element; the working platform can be the ground, a tabletop, or something similar. Figure 1 The support platform and other components located at the bottom of the shell shown in the embodiments of the present invention are not specifically limited.

[0043] In some embodiments, the rotatable component may be a planar bearing, the bottom of which is fixed to the working platform, and one end of the filter element is connected via, for example, Figure 2 The four clamping components 121 on the planar bearing shown are fixed above the planar bearing, and the planar bearing has rolling wheels inside to achieve relative rotation.

[0044] In some embodiments, refer to Figure 1 The air compressor includes a variable frequency motor 132 and an air tank 133. The variable frequency motor can be adjusted to different power levels, and the air tank can be a 3-cubic-meter air tank.

[0045] In some embodiments, the control device stores a model-to-power lookup table, which characterizes the mapping relationship between filter element models and the required operating power of the air compressor. The control device obtains the filter element model, queries the model-to-power lookup table based on the filter element model, and determines the corresponding operating power of the air compressor.

[0046] In some embodiments, the air spray gun has a telescopic structure. When in use, the air spray gun is adjusted according to the length of the filter element. The longer the filter element is, the longer the air spray gun is, ensuring that the bottom of the filter element can be cleaned.

[0047] In some other embodiments, the air outlet spray gun and the air outlet channel of the air compressor are detachable. When in use, the air outlet spray gun of the appropriate length can be replaced according to the length of the filter element to ensure that the bottom of the filter element can be cleaned.

[0048] In some embodiments, such as Figure 1 As shown, the gas filter cartridge dust removal system also includes a housing 150 and a dust collection box 160. The working platform is located inside the housing, and the bottom of the housing is connected to the dust collection box. The working platform has a hollow structure, allowing the bottom of the housing to connect to the dust collection box.

[0049] In some embodiments, such as Figure 1As shown, a first pressure sensor 210 is installed at the inlet of the dust collection box, and a second pressure sensor 220 is installed at the air compressor outlet. The first pressure sensor monitors the first pressure value at the dust collection box inlet, and the second pressure sensor monitors the second pressure value at the air compressor outlet. The control device is also used to control the air compressor to stop working when the difference between the second pressure value and the first pressure value is less than a preset difference. In this embodiment, when dust removal begins, there is a lot of dust attached to the filter element, and the pressure difference between the inside and outside of the filter element is large. During the dust removal process, the amount of dust attached to the filter element gradually decreases, and the pressure difference between the inside and outside also decreases. The difference between the first pressure value at the dust collection box inlet and the second pressure value at the outlet can represent the pressure difference between the inside and outside of the filter element. When this difference is less than the preset difference, it indicates that there is less dust attached to the filter element, and the control device automatically controls the air compressor to stop working.

[0050] According to some embodiments of the present invention, the dust collection box is a transparent box. In this embodiment, by using a transparent dust collection box, the completion of dust removal can be determined by observing the amount of dust at the inlet of the dust collection box, thereby controlling the air compressor to stop working. Specifically, the filter element dust removal system of the gas filter also includes a camera connected to a control device. The camera is used to capture dust images of the dust collection box, and the control device is also used to analyze the grayscale of the inlet area of ​​the dust collection box based on the dust images. When the grayscale is less than a preset grayscale value, it indicates that the amount of dust at the inlet of the dust collection box is small, that is, there is less dust adhering to the filter element, and the air compressor is then controlled to stop working.

[0051] Reference Figure 3 The present invention provides a method for dust removal from a gas filter element, including but not limited to steps S110, S120, S130, and S140:

[0052] Step S110: Fix one end of the filter element of the gas filter to the working platform via a rotatable component;

[0053] Step S120: Insert the air compressor's air outlet gun into the interior of the filter element from the other end of the filter element, wherein the air outlet of the air outlet gun is obliquely cut.

[0054] Step S130: Determine the working power of the air compressor based on the filter element model;

[0055] Step S140: Control the air compressor to operate at the aforementioned working power so that air moves from the inside of the filter element to the outside of the filter element at a preset pressure, and drives the filter element to rotate relative to the working platform.

[0056] According to some embodiments of the present invention, in step S130, determining the operating power of the air compressor based on the filter element model includes the following steps:

[0057] By consulting a power conversion table based on the filter model, you can obtain the operating power of the air compressor. Specifically, this can be done manually or by inputting the filter model into the control device, which will then determine the operating power and control the air compressor to operate at that power.

[0058] Specifically, the model power comparison table is obtained in the following way:

[0059] One end of each test filter element of different models is fixed to the working platform by a rotatable component. The air outlet spray gun of the air compressor is inserted into the interior of the test filter element from the other end. The power of the air compressor is adjusted from small to large until the test filter element rotates at a preset speed. The power and the filter element model at this time are recorded to obtain a model-power comparison table.

[0060] In this embodiment, different models of filter elements have different materials and specifications. Therefore, when the same airflow is introduced into the filter element, the rotation speed of different models of filter elements will be different. Under the same fixed airflow, a certain model of filter element may have a higher material density and weight, so the filter element will not rotate relative to the working platform, while another model of filter element may rotate too fast, which may result in dust remaining on the inner wall of the housing for a long time without falling off. Therefore, in order to improve the dust removal effect, it is necessary to determine the reasonable compressor power corresponding to the filter element model in advance so that the compressor power generates the corresponding airflow, so that all models of filter elements can rotate at a more suitable speed to improve the dust removal effect.

[0061] According to some embodiments of the present invention, the dust removal method for the filter element of a gas filter further includes the following steps:

[0062] Adjust the length of the air compressor's outlet spray gun according to the length of the filter element.

[0063] According to some embodiments of the present invention, the gas filter is placed on a working platform inside a housing, with the bottom of the housing connected to a dust collection box. In this embodiment, a transparent dust collection box can be used, and the completion of dust removal can be determined by observing the amount of dust at the inlet of the dust collection box, thereby controlling the air compressor to stop working. The less dust at the inlet of the dust collection box, the less dust remains on the filter element.

[0064] According to some embodiments of the present invention, the dust removal method for the filter element of a gas filter further includes the following steps:

[0065] Obtain the initial pressure value at the dust collection box inlet;

[0066] Obtain the second pressure value at the air compressor outlet passage;

[0067] When the difference between the second pressure value and the first pressure value is less than a preset difference, the air compressor is controlled to stop working.

[0068] In this embodiment, when dust removal begins, there is a lot of dust attached to the filter element, and the pressure difference between the inside and outside of the filter element is large. During the dust removal process, the amount of dust attached to the filter element gradually decreases, and the pressure difference between the inside and outside also decreases. The difference between the first pressure value at the inlet of the dust collection box and the second pressure value at the outlet channel can characterize the pressure difference between the inside and outside of the filter element. When this difference is less than the preset difference, it indicates that there is less dust attached to the filter element, and the air compressor is automatically controlled to stop working by the control device.

[0069] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A method for dust removal from a gas filter element, characterized in that, Includes the following steps: One end of the filter element of the gas filter is fixed to the working platform by a rotatable component; the gas filter is placed on the working platform inside the housing, and the bottom of the housing is connected to the dust collection box; An air compressor outlet nozzle is inserted into the interior of the filter element from the other end, wherein the outlet of the outlet nozzle is obliquely cut. The working power of the air compressor is obtained by referring to the model power comparison table based on the filter element model. The model power comparison table is obtained by fixing one end of test filter elements of different filter element models on the working platform through a rotatable component, inserting the air outlet spray gun of the air compressor into the interior of the test filter element from the other end, adjusting the power of the air compressor from small to large until the test filter element rotates at a preset speed, and recording the power at this time and the filter element model of the current test filter element to obtain the model power comparison table. The air compressor is controlled to operate at the specified working power, so that air moves from the inside of the filter element to the outside of the filter element at a preset pressure, and drives the filter element to rotate relative to the working platform; The dust removal method for the gas filter element also includes the following steps: Obtain the first pressure value at the inlet of the dust collection box; Obtain the second pressure value at the air compressor outlet channel; When the difference between the second pressure value and the first pressure value is less than a preset difference, the air compressor is controlled to stop working; The dust removal method for the gas filter element also includes the following steps: Adjust the length of the air compressor's outlet spray gun according to the length of the filter element.

Images