A waste gas and waste residue filtering device

Abstract

The application discloses a waste gas and waste residue filtering device, which comprises a machine body, wherein the machine body comprises a pulse back-blowing dust removal mechanism and a dust collection monitoring module; the dust collection monitoring module comprises a display module arranged outside the machine body; the pulse back-blowing dust removal mechanism is electrically connected with the dust collection monitoring module, and the display module can real-time feedback the running condition of the pulse back-blowing dust removal mechanism. The working condition data of the pulse back-blowing dust removal mechanism can be collected by the dust collection monitoring module, and the real-time feedback can be provided to the operator through the display module, so that the timely manual intervention can be realized when various unexpected conditions occur in the dust collection process, and the efficiency and stability of the waste gas and waste residue filtering device can be ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of pollutant treatment, in particular to a waste gas and waste residue filtering device. Background Art

[0002] In recent years, with the rapid development of the regional economy, the requirements for power grid construction have been continuously improved. The number of steel structure prefabricated substation construction projects has increased sharply. The contradictions such as short construction period, heavy tasks, and a variety of construction processes have become increasingly prominent. During the construction of substations, the damage to the environment has also come at a price. The emission of waste gas has increased day by day, which not only affects the work efficiency of workers in the operation area and deteriorates the environment, but also causes serious pollution to the surface water, groundwater and surrounding soil environment. For this reason, greater manpower, material and financial resources must be paid to make up for it.

[0003] Currently, gas filtration systems are mostly used in large-scale processing plants such as lumber processing workshops. However, the wood processing areas at substation construction sites lack dedicated dust removal and filtration equipment for waste gas and waste residue. Air pollution can lead to respiratory infections, and prolonged exposure to turbid air can harm the human nervous, respiratory, and immune systems, leading to a fatal decline in immunity and related diseases. Furthermore, environmental factors in wood processing areas also determine the quality of the finished concrete formwork. Fine sawdust adhering to the formwork surface is often caused by the inability to filter waste gas and waste residue during the cutting process. This can lead to quality issues such as hollowing and cracking after the concrete is poured, especially at corner joints, such as between columns and beams, which directly impacts the service life of the floor.

[0004] With the continuous advancement of science and technology, it has been realized that some waste gas and waste residue can be recycled and turned into useful materials or energy through certain technical means. Waste gas and waste residue filters can be used to assist processing workers in filtering the working environment air and create a good air environment for processing workers.

[0005] During the construction of the substation project, the number of wood processing, welding and other processing operations increases, and a large amount of waste gas and waste residue will be generated during the cutting process. Workers will inhale a large amount of toxic and harmful gases in such an environment. For example, if too much waste gas from wood welding is inhaled, it will seriously damage the lungs. After the dust enters the lungs, it will block the lung lobes and affect the exchange of oxygen and carbon dioxide, causing hypoxia in the human body. People will feel short of breath, and the serious case is silicosis, which is difficult to cure. Inhaling a large amount of dust has a serious impact on the lung function of workers in the processing area.

[0006] For example, Chinese patent application number CN202211205395.X describes a dust-laden exhaust gas treatment device for an animal feed production plant. A partition divides the housing into an upper chamber and a lower chamber. An air intake duct connected to the lower chamber is provided on one side of the housing. A support rod is connected to the pleated bag and can slide radially along the vent hole. When the pressure within the hydraulic cylinder increases, the adjustment wheel is pushed to slide away from the main shaft. Each inner push rod is inserted into an adjustment wheel and connected to the hydraulic cylinder. The connecting rod frictionally contacts the inner push rod and engages with the threaded adjustment wheel to drive the connecting rod to slide away from the main shaft when the adjustment wheel rotates. A drive locking mechanism is used to restrict radial movement of the adjustment wheel and drive rotation of the adjustment wheel when the connecting rod moves a preset distance toward the main shaft. The airflow generated by the pulse valve cleans the pleated bag. The larger the diameter of the pleated bag, the higher the cleaning efficiency of the pulse valve.

[0007] Although the above scheme uses a drive locking mechanism to adjust the pleated bag to control the exhaust gas treatment efficiency, the operator cannot obtain the dust accumulation status of the pleated bag in time. Therefore, there is still the problem of increased resistance and reduced exhaust gas treatment efficiency after the bag collects too much dust. Summary of the Invention

[0008] In view of the existing technology mentioned in the background technology, operators are unable to promptly determine the degree of dust collection by the bag, and are unable to determine whether the decline in waste gas treatment efficiency is due to dust saturation. The present invention aims to use this device to timely treat waste gas residue during wood, steel and other material processing operations, purify the air, reduce waste gas particles at the workplace, and protect the health of operators. At the same time, the display module is used to timely feedback the dust removal status of the pulsed back-blowing dust removal mechanism, thereby ensuring that operators can promptly intervene in the operation of the equipment when the dust collection efficiency decreases. Whether it is dust saturation or unexpected situations such as "bag sticking" or "bag breaking", they can be handled in a timely manner, thereby maintaining a high waste gas and waste residue treatment efficiency.

[0009] The second invention object of the present invention is to solve the problem that when high-temperature exhaust gas / waste residue enters the device for treatment, it will cause damage to the components of the pulse back-blowing dust removal mechanism; and the excessive water / oil content of the exhaust gas / waste residue will cause the pulse back-blowing dust removal mechanism to become "sticky".

[0010] In order to achieve the above object, the present invention adopts the following technical solutions:

[0011] A waste gas and waste residue filtering device comprises a body, wherein the body comprises a pulse-type back-blowing dust removal mechanism and a dust collection monitoring module;

[0012] Among them, the dust collection monitoring module includes a display module arranged outside the body; the pulse back-blowing dust removal mechanism is electrically connected to the dust collection monitoring module, and the display module provides real-time feedback on the operating conditions of the pulse back-blowing dust removal mechanism.

[0013] The pulsed back-flushing dust removal mechanism is a common dust removal device in the industry. Its working principle is that after the dust-laden gas enters the dust collector from the air inlet, the airflow enters the guide channel. After the large dust particles collide with the guide plate, the large dust particles fall into the coarse particles under the action of gravity, leaving the airflow and settling in the ash hopper. The fine dust is blocked on the outer surface of the dust filter when passing through the bag with the airflow, and the clean gas is discharged from the air outlet. When the dust layer on the surface of the dust filter is thick, the pulse controller issues a command to open the injection valve, and the compressed air in the air tank is ejected at high speed through the injection pipe. At the same time, it induces the surrounding air several times the amount of injected air to enter the dust filter and eject it rapidly from the inside to the outside, blowing the dust on the outer surface of the bag down into the ash hopper, and finally discharged by the ash discharge valve. This solution collects the working data of the pulsed back-flushing dust removal mechanism through the dust collection monitoring module and provides real-time feedback to the operator through the display module, ensuring timely manual intervention in the event of various unexpected conditions during the dust collection process, thereby ensuring the efficiency and stability of the waste gas and waste residue filtration device.

[0014] Furthermore, the machine body includes a casing, and the pulse-type back-blowing dust removal mechanism includes a main fan and a dust filter arranged in the casing; the casing is provided with an air inlet and an air outlet. The exhaust gas passes through the dust filter from the outer surface of the filter bag, and the waste residue and dust are blocked on the surface of the dust filter. When the blocked dust is continuously deposited on the surface of the dust filter, the filter cartridge is cleaned by pulse spraying, or the dust filter can be cleaned manually, so that the dust particles deposited on the dust filter are separated from the surface of the dust filter under the action of vibration and fall into the dust collection drawer, so that the entire surface of the dust filter is cleaned, and the purified air is discharged from the air duct and through the fan. The main fan is the negative pressure wind force of the entire equipment to ensure the normal implementation of dust collection.

[0015] Preferably, a guide channel is provided at the air inlet, and a recyclable phase change network is provided on the inner wall of the guide channel, and the recyclable phase change network extends to the outside of the casing. The recyclable phase change network is composed of a hollow tube, and the hollow tube is filled with a solid-liquid phase change material. Since the recyclable phase change network is provided both inside and outside the casing, when the solid-liquid phase change material in the recyclable phase change network inside the casing is continuously heated by the high-temperature exhaust gas and waste residue entering the equipment, the heat will be gradually transferred to the solid-liquid phase change material in the recyclable phase change network outside the casing, so that the solid-liquid phase change material in the entire recyclable phase change network is converted from solid to liquid. Since the temperature of the guide channel is significantly higher than the temperature outside the casing, under the action of thermal convection, the liquid phase change material in the recyclable phase change network will circulate between the inside and outside of the casing, and the higher temperature liquid phase change material will flow to the outside of the casing to dissipate heat, thereby reducing the temperature of the exhaust gas and waste residue, thereby protecting the filter element, pulse valve and other components of the pulse back-blowing dust removal mechanism.

[0016] Preferably, a composite dust cage is disposed externally of the dust filter element. The composite dust cage includes support columns and phase change columns. The phase change columns of each composite dust cage are interconnected and connected to a recyclable phase change network. The composite dust cage is used to position and protect the filter element, and the support columns serve as a shaping mechanism. In this embodiment, the phase change columns of the composite dust cage external to each dust filter element are all connected to the recyclable phase change network. This allows the composite dust cage, which is affected by high temperatures, to participate in the flow cycle and heat dissipation of the solid-liquid phase change material in the diversion duct, further reducing the impact of high temperatures on temperature-sensitive components such as the filter element.

[0017] Preferably, a temperature-changing mechanism is provided on the outside of the casing, and the temperature-changing mechanism includes a temperature-control belt covering a recyclable phase-change network provided on the outside of the casing. The temperature-changing mechanism can provide high or low temperatures like the temperature-control belt: when the temperature of the waste gas and waste residue is high, the temperature-control belt provides low temperature to the recyclable phase-change network outside the casing for timely cooling, accelerating the circulation flow rate of the solid-liquid phase-change material in the network, thereby improving the heat dissipation effect for temperature reduction protection; and when the temperature of the waste gas and waste residue is normal but the oil / water content is high, that is, the humidity is high, the temperature-control belt provides a relatively high temperature to the recyclable phase-change network outside the casing that does not affect the quality of the components of the pulse-type recoil dust removal mechanism, and also promotes the solid-liquid phase-change material in the recyclable phase-change network to be heated and liquefied and flow, so that the high-humidity waste gas and waste residue entering the diversion channel are heated and dried to a certain extent, thereby avoiding the occurrence of the "sticky bag" phenomenon. Solve the problem raised by the second invention purpose of this application.

[0018] Preferably, the dust collection monitoring module includes a weighing sensor connected to the dust filter element, and also includes a control core component connected to the weighing sensor, wherein the control core component includes a manual start / stop button connected to the pulsed back-flushing dust removal mechanism. The dust collection monitoring module can use the weighing sensor to detect changes in the mass of the filter element. The operator can analyze the dust saturation level and dust collection efficiency trends based on the mass change curve of the filter element, thereby timely controlling the start and stop of the equipment through the core component to facilitate filter element replacement and ensure efficient waste gas and waste residue treatment.

[0019] Preferably, a drawer-type tray is provided at the bottom of the machine body. The drawer-type tray serves as a detachable ash hopper for collecting waste dust left over from filtration, as well as waste dust dropped from the filter element after backflushing. When the drawer-type tray is full, a piezoelectric sensor provided at the bottom can provide feedback to the core component control device, reminding the user to dump it in time.

[0020] Preferably, a universal wheel set is provided under the machine body, which enables the entire waste gas and waste residue filtering device to be freely movable, making the device flexible and convenient, providing safety protection for processing workers, and greatly improving the construction quality of the processing operation.

[0021] Therefore, the present invention has the following beneficial effects:

[0022] 1) The dust collection monitoring module collects operating data of the pulsed back-flushing dust removal mechanism and provides real-time feedback to the operator through the display module, ensuring timely manual intervention in the event of any unexpected conditions during the dust collection process, thereby ensuring the efficiency and stability of the waste gas and waste residue filtration device;

[0023] 2) Utilize the thermal convection effect of the temperature control mechanism and the solid-liquid phase change material in the entire recyclable phase change network to protect the pulsed back-blowing dust removal mechanism from overheating;

[0024] 3) Utilize the thermal convection effect of the temperature control mechanism and the solid-liquid phase change material in the entire recyclable phase change network to provide humidity balance protection for the pulsed back-blowing dust removal mechanism;

[0025] 4) The dust collection monitoring module can use a weighing sensor to detect the mass change of the filter element. The operator can analyze the dust collection saturation level and the dust collection efficiency change trend through the mass change curve of the filter element, so as to timely control the start and stop of the equipment through the core components to facilitate the replacement of the filter element to ensure efficient waste gas and waste residue treatment.

[0026] 5) It is easy to move, has strong suction power, long service life, easy maintenance, flexible and convenient, collects dust on site, processes dust on site, can effectively ensure the cleanliness of the air, occupies little space, and is easy and quick to disassemble the ash hopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1A structural schematic diagram of the application in Example 1.

[0028] Figure 2 A structural schematic diagram of the application in Example 2.

[0029] Figure 3 A front view of the application in Example 3.

[0030] Reference signs

[0031] Machine body 1, pulse back-blowing dust removal mechanism 2, display module 3, machine shell 4, air inlet 41, air outlet 42, flow guide channel 43, main fan 5, dust filter 6, blow valve 61, composite dust filter cage 62, phase change column 63, recyclable phase change net 7, temperature control band 8, universal wheel set 9, drawer-type tray 10. DETAILED DESCRIPTION

[0032] The application will be further described below in conjunction with the accompanying drawings and specific embodiments. The examples of the described embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the application, and cannot be understood as a limitation of the application.

[0033] Example 1

[0034] As Figure 1 shown, the waste gas and waste residue filtering device of the application is a waste gas and waste residue filtering device, which comprises a machine body 1, wherein the machine body comprises a pulse back-blowing dust removal mechanism 2 and a dust collection monitoring module.

[0035] The dust collection monitoring module comprises a display module 3 arranged outside the machine body.

[0036] The pulse back-blowing dust removal mechanism is electrically connected with the dust collection monitoring module, and the display module real-time feedbacks the running conditions of the pulse back-blowing dust removal mechanism.

[0037] The pulse back-blowing dust removal mechanism is a common dust removal device in the industry. The scheme collects the working condition data of the pulse back-blowing dust removal mechanism through the dust collection monitoring module, and real-time feedbacks to the operator through the display module, so as to ensure that the dust collection process can be intervened in time when various unexpected conditions occur, thereby ensuring the efficiency and stability of the waste gas and waste residue filtering device.

[0038] The machine body includes a casing 4, and the pulse-type back-blowing dust removal mechanism includes a main fan 5 and a dust filter 6 arranged in the casing; the casing is provided with an air inlet 41 and an air outlet 42. The exhaust gas passes through the dust filter from the outer surface of the filter bag, and the waste residue and dust are blocked on the surface of the dust filter. When the blocked dust is continuously deposited on the surface of the dust filter, the filter cartridge is cleaned by pulse spraying. The dust filter can also be cleaned manually, so that the dust particles deposited on the dust filter are separated from the surface of the dust filter under the action of vibration and fall into the dust collection drawer, so that the entire surface of the dust filter is cleaned, and the purified air is discharged from the air duct and through the fan. The main fan is the negative pressure wind force of the entire equipment to ensure the normal implementation of dust collection.

[0039] The dust collection monitoring module includes a weighing sensor connected to the dust filter, a control core component connected to the weighing sensor, and a manual start / stop button connected to the pulsed back-blowing dust removal mechanism. A drawer-type tray is provided at the bottom of the machine body. A universal wheel assembly 9 is provided below the machine body.

[0040] The dust collection monitoring module can use a weighing sensor to detect the mass change of the filter element. The operator can analyze the dust collection saturation level and the dust collection efficiency change trend through the mass change curve of the filter element, so as to timely start and stop the equipment through the core component control, so as to facilitate the replacement of the filter element to ensure efficient waste gas and waste residue treatment. The drawer-type tray 10 serves as a detachable ash hopper, which is used to collect the waste residue dust left by the filtration and the waste residue dust dropped by the filter element after backblowing. When it is full, it can be fed back to the core component control device through the piezoelectric sensor set at the bottom to remind the user to dump it in time. The universal wheel assembly allows the entire waste gas and waste residue filtering device to be freely movable, and the device is flexible and convenient, providing safety protection for processing workers and greatly improving the construction quality of processing operations.

[0041] In this embodiment, after waste gas and waste residue enter the device through the air inlet, large dust particles collide with the deflector plate and, under the action of gravity, fall into the coarse particles, leaving the airflow and settling in the drawer-type tray. Fine dust particles are trapped on the outer surface of the dust filter as they pass through the bag with the airflow, and clean gas is discharged through the air outlet. When the dust layer on the surface of the dust filter is thick, the pulse controller issues a command to open the injection valve 61, and the compressed air in the air storage tank is ejected at high speed through the injection pipe. At the same time, it induces ambient air several times the amount of injected air to enter the dust filter and is ejected rapidly from the inside out, blowing the dust on the outer surface of the bag down into the ash hopper, and finally discharged through the ash discharge valve. In this embodiment, the dust filter uses commercially available dust removal bags or filter elements.

[0042] Example 2

[0043] like Figure 2As shown, in this embodiment, a guide channel 43 is provided at the air inlet, and a recyclable phase-change mesh 7 is provided on the inner wall of the guide channel. The recyclable phase-change mesh extends to the exterior of the housing. A temperature-changing mechanism is provided on the exterior of the housing, and the temperature-changing mechanism includes a temperature-control belt 8 covering the recyclable phase-change mesh provided on the exterior of the housing.

[0044] The recyclable phase change network is composed of a hollow tube, which is filled with solid-liquid phase change material. Since the recyclable phase change network is arranged both inside and outside the casing, when the solid-liquid phase change material in the recyclable phase change network inside the casing is continuously heated by the high-temperature exhaust gas and waste residue entering the equipment, the heat will be gradually transferred to the solid-liquid phase change material in the recyclable phase change network outside the casing, so that the solid-liquid phase change material in the entire recyclable phase change network is converted from solid to liquid. Since the temperature of the guide channel is significantly higher than the temperature outside the casing, under the action of thermal convection, the liquid phase change material in the recyclable phase change network will circulate between the inside and outside of the casing, and the liquid phase change material with a higher temperature will flow to the outside of the casing to dissipate heat, thereby reducing the temperature of the exhaust gas and waste residue, thereby protecting the filter element, pulse injection valve 61 and other components of the pulse back-blowing dust removal mechanism. The temperature-changing mechanism can provide high or low temperatures, like a temperature-control belt. When the exhaust gas and waste residue are at high temperatures, the temperature-control belt provides low temperatures to the recyclable phase-change network outside the housing for timely cooling, accelerating the circulation of the solid-liquid phase-change material within the network, thereby enhancing heat dissipation and providing temperature protection. When the exhaust gas and waste residue are at normal temperatures but have high oil / water content (i.e., high humidity), the temperature-control belt provides a relatively high temperature to the recyclable phase-change network outside the housing, without affecting the quality of the components of the pulsed recoil dust removal mechanism. This also promotes the liquefaction and flow of the solid-liquid phase-change material within the recyclable phase-change network, allowing the high-humidity exhaust gas and waste residue entering the diversion channel to be heated and dried to a certain extent, thereby preventing the occurrence of "sticky bags." In this embodiment, the temperature-changing mechanism utilizes a hot / cold switch, capable of switching between cooling and heating functions. In this embodiment, the recyclable phase-change network is detachably connected to the diversion channel and the housing. Operators can select a recyclable phase-change network equipped with the appropriate solid-liquid phase-change material based on the exhaust gas and waste residue parameters (temperature and humidity). Commonly used solid-liquid phase change materials include stepless hydrated salt phase change materials: sodium sulfate, sodium acetate, calcium chloride, and disodium hydrogen phosphate; molten salt phase change materials: carbonates, nitrates, sodium chloride, and lithium fluoride; and organic phase change materials: paraffin, fatty acids, and polyols. Operators can make appropriate selections based on the temperature and humidity of the waste gas and waste residue, combined with the melting point of the phase change material.

[0045] Example 3

[0046] like Figure 3As shown, this embodiment adds a composite dust cage 62, located outside the dust filter element, based on Example 2. The composite dust cage includes support columns and phase change columns 63. The phase change columns of each composite dust cage are connected to each other and to the recyclable phase change network. The composite dust cage is used to position and protect the filter element, and the support columns have a shaping function. In this solution, the phase change columns of the composite dust cage outside each dust filter element are all connected to the recyclable phase change network. This allows the composite dust cage, which is affected by high temperatures, to participate in the flow cycle and heat dissipation of the solid-liquid phase change material in the diversion duct, further reducing the impact of high temperatures on temperature-sensitive components such as the filter element.

[0047] In addition to the above-mentioned embodiments, within the scope disclosed in the claims and description of the present invention, the technical features of the present invention can be reselected and combined to form new embodiments. These can be achieved by those skilled in the art without creative work. Therefore, these embodiments that are not described in detail in the present invention should also be regarded as specific embodiments of the present invention and within the scope of protection of the present invention.

Claims

1. A waste gas and waste residue filtering device, comprising a body, characterized in that: The machine body includes a pulse back-blowing dust removal mechanism and a dust collection monitoring module; Wherein, the dust collection monitoring module includes a display module arranged outside the body; The pulse-type back-blowing dust removal mechanism is electrically connected to the dust collection monitoring module, and the display module provides real-time feedback on the operating conditions of the pulse-type back-blowing dust removal mechanism; The machine body includes a casing and a dust filter disposed in the casing, and the casing is provided with an air inlet and an air outlet; A guide channel is provided at the air inlet, and a recyclable phase change network is provided on the inner wall of the guide channel; A composite dust filter cage is provided outside the dust filter element, and the composite dust filter cage includes a support column and a phase change column. The phase change columns of each composite dust filter cage are connected to each other and connected to a recyclable phase change network. A temperature changing mechanism is arranged outside the casing, and the temperature changing mechanism comprises a temperature control belt covering a circulatory phase change network arranged outside the casing.

2. The waste gas and waste residue filtering device according to claim 1, characterized in that: The machine body includes a casing, and the pulse-type back-blowing dust removal mechanism includes a main fan and a dust filter element arranged in the casing.

3. The waste gas and waste residue filtering device according to claim 2, characterized in that: The recyclable phase change network extends to the outside of the casing.

4. The waste gas and waste residue filtering device according to claim 3, characterized in that: The phase change columns of each composite dust filter cage are connected to each other and to the recyclable phase change network, so that the composite dust filter cage affected by high temperature participates in the flow cycle heat dissipation of the solid-liquid phase change material in the diversion pipe.

5. A waste gas and waste residue filtering device according to any one of claims 1 to 4, characterized in that: The dust collection monitoring module includes a weighing sensor connected to the dust filter element, and also includes a control core component connected to the weighing sensor. The control core component includes a manual start and stop button connected to the pulse back-blowing dust removal mechanism.

6. A waste gas and waste residue filtering device according to any one of claims 1 to 4, characterized in that: A drawer-type tray is provided at the bottom of the machine body.

7. A waste gas and waste residue filtering device according to any one of claims 1 to 4, characterized in that: A universal wheel set is arranged below the machine body.

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