An air filter device for a production plant

Abstract

The utility model belongs to air filtration technical field, specifically disclose a kind of air filtration device for production workshop, comprising: air pipe assembly, air blower, filter box, spray head and water supply component;The air blower one end is connected with the air pipe assembly, another end is connected with the filter box air inlet;The filter box includes multiple filter screens in it, and multiple drain ports are arranged at the bottom end, and multiple spray heads are arranged in the filter box and connected with the water supply component, and the spray direction of each group of spray heads is towards one filter screen.The filter device of the utility model forms an efficient air flow system, ensures that the polluted air containing dust and waste gas can be effectively sucked in and purified by multiple layers of filtration, effectively removes particulate matter and harmful gases in waste gas;Secondly, the spray head and the filter screen are accurately matched to clean without stopping, and the maintenance process is simplified.

Description

Technical Field

[0001] This utility model belongs to the field of air filtration technology, and more specifically, relates to an air filtration device for production workshops. Background Technology

[0002] In modern industrial production, especially in workshops of machinery manufacturing, metal processing, and automobile assembly, cutting, welding, and painting are common key processes. While these processes improve product performance and efficiency, they also generate large amounts of dust and exhaust gases. Dust mainly originates from operations such as cutting, grinding, and sandblasting of metal materials, while exhaust gases are mostly formed from high-temperature volatiles generated during welding and the evaporation of chemicals such as paints and thinners used in painting. These dust and exhaust gases contain various harmful components, which not only seriously pollute the air quality in the workshop but may also enter the human body through the respiratory tract, posing a potential threat to workers' health and even causing occupational diseases. Therefore, during the construction of production workshops, it is essential to install effective air filtration devices to capture and treat these harmful substances, reducing their harm to the environment and human health.

[0003] To address the aforementioned issues, existing technologies typically employ the installation of air filtration systems within the workshop to handle dust and exhaust gases. Common filtration devices include baghouse dust collectors, cartridge dust collectors, and electrostatic precipitators. These devices use fans to draw pollutant-laden air into the filtration system, where filter media (such as filter bags, cartridges, or electrode plates) intercept and adsorb dust and exhaust gases, thereby purifying the air. Some advanced filtration systems are also equipped with activated carbon adsorption layers or catalytic combustion devices to treat organic waste gases and harmful gases. Furthermore, some filtration devices are designed with automatic dust removal functions, periodically removing accumulated dust from the filter media through pulse jet cleaning, mechanical vibration, or other methods to extend the filter media's lifespan and maintain filtration efficiency. These technologies, to a certain extent, improve workshop air quality, reduce pollutant emissions, and protect worker health.

[0004] Although existing technologies have achieved some success in air purification, they still have many shortcomings and cannot completely solve the problem of dust and exhaust gas pollution in production workshops. For example, the filtration efficiency of existing filter devices will decrease significantly after a large amount of dust adheres to the filter media, requiring frequent shutdowns for manual disassembly, cleaning, or replacement of the filter media. This process not only consumes a lot of manpower and resources, increasing maintenance costs, but also causes production interruptions, seriously affecting production efficiency. Secondly, although existing automatic dust removal technology can remove dust from the surface of the filter media to a certain extent, the filter replacement and cleaning process relies on manual operation, which is labor-intensive and poses a risk of secondary dust generation, threatening the health of operators. At the same time, frequent replacement of filter media also brings high operation and maintenance costs, increasing the economic burden on enterprises. Utility Model Content

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this utility model provides an air filtration device for production workshops. By forming a highly efficient airflow system, it ensures that polluted air containing dust and exhaust gases can be effectively drawn in and purified through multi-layer filtration, effectively removing particulate matter and harmful gases from the exhaust gas. Secondly, through the precise cooperation between the spray head and the filter screen, cleaning can be performed without interrupting the production process, greatly simplifying the maintenance process, reducing operational difficulty, ensuring continuous high-efficiency operation, reducing labor costs and the risk of secondary dust generation, and protecting the health of workers.

[0006] To achieve the above objectives, this utility model provides an air filtration device for a production workshop, comprising: a duct assembly, a blower, a filter box, a spray head, and a water supply assembly, wherein:

[0007] One end of the blower is connected to the air duct assembly, and the other end is connected to the air inlet of the filter box;

[0008] The filter box includes multiple filter screens arranged at equal intervals from its air inlet to its air outlet, and multiple drain outlets located at its bottom.

[0009] Multiple spray heads are disposed inside the filter box and connected to the water supply assembly, with each set of spray heads spraying towards one of the filter screens.

[0010] Furthermore, the blower, the filter box, and the water supply assembly are all located inside the installation cavity, which is located inside the workshop roof.

[0011] Furthermore, the filter box is also equipped with an air guide hood and multiple support plates; one end of the air guide hood is connected to the air inlet of the filter box, and the other end faces the filter screen; the bottom ends of the multiple support plates are fixedly connected to the bottom plate of the filter box, and their upper ends are connected to one or more of the bottom ends of the filter screen, the bottom ends of the air guide hood, or the inner wall of the filter box; two support plates are corresponding to one drain outlet and are arranged symmetrically in a V-shape on both sides of the drain outlet.

[0012] Furthermore, the water supply assembly includes: a main water supply pipe, branch water supply pipes, atomizing spray heads, distribution pipes, a connecting frame, a connecting rod, a rotating drive component, and a support component; wherein:

[0013] The main water supply pipe is located inside the installation cavity and above the filter box;

[0014] The water supply branch pipe is a forked pipe, with its straight end connected to the main water supply pipe and its forked end inserted into the filter box and respectively provided with a first distribution pipe and a second distribution pipe.

[0015] The first distribution pipe is parallel to the filter screen, and a plurality of atomizing spray heads are arranged at equal intervals at its bottom end;

[0016] The second distribution pipe is parallel to the first distribution pipe, and a plurality of the water distribution pipes are arranged at equal intervals at its bottom end;

[0017] The water distribution pipe is connected to the spray head, and the water distribution pipe near the connection area is a flexible pipe;

[0018] The connecting frame is sleeved on the outside of the connection between the water distribution pipe and the spray head;

[0019] The upper ends of the plurality of support members are fixedly connected to the upper end of the inner wall of the filter box;

[0020] The connecting rod is horizontally disposed on one side of the connecting frame and is rotatably connected to the adjacent support member;

[0021] The rotary drive is located on the other side of the connecting frame relative to the connecting rod, and its output shaft is connected to the connecting frame and one end is fixedly connected to the support.

[0022] Furthermore, the branch connecting the water supply branch pipe and the second distribution pipe is equipped with a solenoid valve.

[0023] Furthermore, the filtration device also includes: a filter cartridge, an exhaust fan, and an inspection window;

[0024] The filter cartridge is located inside the mounting cavity, and its inlet end is detachably connected to the air outlet of the filter box.

[0025] The induced draft fan is mounted on the surface of the mounting cavity bottom plate and is detachably connected to the outlet end of the filter cartridge. Its outlet end is connected to a pipeline and extends to the outside of the workshop roof.

[0026] The inspection window is located at the bottom of the workshop roof and below the filter cylinder. When it is opened, the mounting cavity is connected to the interior of the production workshop.

[0027] Furthermore, the filtration device also includes: a gas detection sensor and a control console; multiple gas detection sensors are located inside the production workshop; the control console is communicatively connected to the gas detection sensors and electrically connected to the blower, solenoid valve, rotary drive component and induced draft fan respectively.

[0028] Furthermore, the aperture of the multiple filter screens gradually decreases from the air inlet to the air outlet of the filter box;

[0029] The outlet end of the air guide hood is parallel to the filter screen, and the cross-sectional shape of the outlet end is the same as that of the filter screen.

[0030] Furthermore, the filtration device also includes a water outlet pipe, which is horizontally inclined and embedded in the surface of the mounting cavity. It is connected to a plurality of the drain outlets via rigid pipes, and its outlet end is lower than the height of the connection point between the rigid pipes and the outlet pipe.

[0031] Furthermore, the air duct assembly includes: an air intake pipe, an air intake hood, and an air guide pipe; the air intake pipe is located at the bottom of the workshop roof via a connector and corresponds to the position of the mounting cavity, and a plurality of air intake hoods are arranged at equal intervals at its bottom end; one end of the air guide pipe is connected to the air intake pipe, and the other end of the air guide pipe passes through the mounting cavity and is connected to the blower.

[0032] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects:

[0033] 1. The filtration device of this utility model forms a highly efficient airflow system, ensuring that polluted air containing dust and exhaust gas can be effectively drawn in and purified through multi-layer filtration, effectively removing particulate matter and harmful gases from the exhaust gas; secondly, through the precise cooperation between the spray head and the filter screen, cleaning can be performed without affecting the production process, greatly simplifying the maintenance process, reducing the difficulty of operation, ensuring continuous high-efficiency operation, while reducing labor costs and the risk of secondary dust, and protecting the health of workers.

[0034] 2. The filtration device of this utility model can effectively guide the dust-laden airflow evenly into the filtration area through the air guide hood, avoiding airflow short-circuiting or excessive local impact, thereby preventing particulate matter escape caused by airflow turbulence and improving overall purification efficiency. Secondly, the support plate can effectively support the air guide hood and the filter screen, improving overall strength and operational stability. At the same time, it helps to guide the wastewater generated during the cleaning process to quickly converge to the drain outlet for discharge, preventing water accumulation and secondary pollution or blockage, improving cleaning efficiency and the hygienic performance of the equipment. In addition, by connecting the horizontally inclined water outlet pipe to the drain outlet, the system drainage efficiency can be further improved, preventing water accumulation and effectively avoiding water accumulation caused by poor drainage, reducing the risk of filter material failure due to moisture or internal corrosion of the equipment, and extending the service life of the equipment.

[0035] 3. The filtration device of this utility model, through the effective distribution of water supply pipeline, enables multiple atomizing spray heads to continuously spray water mist into the filter box, which can further purify harmful substances in the exhaust gas, allowing the exhaust gas to be more thoroughly purified when passing through the filter box, reducing environmental pollution; secondly, the use of the rotary drive component can synchronously adjust the spray angle of the spray head, thereby realizing dynamic spray cleaning, greatly improving the cleaning coverage and efficiency of the filter screen, and avoiding the problem of filter screen clogging.

[0036] 4. The filtration device of this utility model, through the design of the filter cartridge, the exhaust fan and the inspection window, enables the deep adsorption or interception of residual fine particulate matter and harmful gases in the air after the primary and intermediate purification is completed in the filter box, thereby further improving air quality and ensuring that the emitted or recirculated air meets relevant environmental protection standards. At the same time, it reduces the difficulty of subsequent maintenance and filter material replacement, and significantly reduces the difficulty of equipment operation and maintenance and downtime.

[0037] 5. The filtration device of this utility model improves the intelligence level of the filtration device through gas detection sensors and control console, so that the operating parameters can be adjusted in real time according to the concentration of pollutants. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the production workshop structure according to an embodiment of the present utility model;

[0039] Figure 2 This is a schematic diagram of the structure of the filtration device according to an embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of the structure at point A in embodiment A of this utility model;

[0041] Figure 4 This is a schematic diagram of the structure at point B in embodiment B of this utility model;

[0042] Figure 5 This is a schematic diagram of the assembly of the spray head and water supply component according to an embodiment of the present invention.

[0043] Figure 6 This is a schematic diagram of the control console in an embodiment of the present invention.

[0044] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-production workshop, 2-workshop roof, 201-installation cavity, 3-duct assembly, 301-suction pipe, 302-suction hood, 303-air guide pipe, 4-blower, 5-filter box, 501-filter screen, 502-drain outlet, 503-air guide hood, 504-support plate, 6-spray head, 7-water supply assembly, 701-main water supply pipe, 701a-first connecting valve, 702-branch water supply pipe, 702 a-First distribution pipe, 702b-Second distribution pipe, 702c-Solenoid valve, 704-Atomizing spray head, 705-Water distribution pipe, 706-Connecting frame, 707-Connecting rod, 708-Rotary drive component, 709-Support component, 8-Water outlet pipe, 9-Filter cartridge, 10-Exhaust fan, 11-Inspection window, 12-Control console, 121-Electronic equipment, 1211-Processor, 1212-Communication bus, 1213-User interface, 1214-Network interface, 1215-Memory. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0046] like Figures 1 to 6 As shown, one embodiment of this utility model provides an air filtration device for a production workshop, including: a duct assembly 3, a blower 4, a filter box 5, spray heads 6, and a water supply assembly 7; one end of the blower 4 is connected to the duct assembly 3, and the other end is connected to the air inlet of the filter box 5; the filter box 5 includes a plurality of filter screens 501 arranged equidistantly from its air inlet to its air outlet, and a plurality of drain outlets 502 located at its bottom; the plurality of spray heads 6 are located in the filter box 5 and connected to the water supply assembly 7, and the spray direction of each group of spray heads 6 is directed toward one of the filter screens 501. The filtration device of this invention forms a highly efficient airflow system, ensuring that polluted air containing dust and exhaust gas can be effectively drawn in and purified through multi-layer filtration and purification, effectively removing particulate matter and harmful gases from the exhaust gas. Secondly, through the precise cooperation between the spray head 6 and the filter screen 501, cleaning can be performed without affecting the production process, greatly simplifying the maintenance process, reducing the difficulty of operation, ensuring continuous high-efficiency operation, reducing labor costs and the risk of secondary dust, and protecting the health of workers.

[0047] Preferably, the blower 4, the filter box 5, and the water supply assembly 7 are all located in the installation cavity 201, which is located in the workshop roof 2, in order to save production space, avoid affecting daily production operations, and improve the operating efficiency of the filtration device.

[0048] like Figures 1 to 3 As shown, the duct assembly 3 further includes: an intake pipe 301, an intake hood 302, and a guide pipe 303; the intake pipe 301 is located at the bottom of the workshop roof 2 via a connector and corresponds to the position of the mounting cavity 201, and a plurality of intake hoods 302 are arranged at equal intervals at its bottom end; one end of the guide pipe 303 is connected to the intake pipe 301, and the other end passes into the mounting cavity 201 and connects to the blower 4. It should be noted that the connector is a common reinforcing component in the prior art, such as a pipe clamp and screws. Of course, in other embodiments, other types of devices can also be used, which are not specifically limited here.

[0049] Understandably, through the above design, the duct assembly 3 enables polluted air in the entire workshop to be evenly drawn in at multiple collection points, avoiding airflow disturbance or secondary dust re-entrainment caused by excessive local negative pressure, thereby improving the uniformity and coverage of air collection.

[0050] like Figure 2 and Figure 3 As shown, the filter box 5 is further provided with an air guide hood 503 and multiple support plates 504; one end of the air guide hood 503 is connected to the air inlet of the filter box 5, and the other end faces the filter screen 501; the bottom ends of the multiple support plates 504 are fixedly connected to the bottom plate of the filter box 5, and their upper ends are connected to one or more of the bottom ends of the filter screen 501, the bottom end of the air guide hood 503, or the inner wall of the filter box 5; two support plates 504 are corresponding to one drain outlet 502 and are arranged symmetrically in a V-shape on both sides of the drain outlet 502.

[0051] Understandably, through the above design, the air guide hood 503 can effectively guide the dust-laden airflow into the filtration area evenly, avoiding airflow short-circuiting or excessive local impact, thereby preventing particulate matter escape caused by airflow turbulence and improving overall purification efficiency. Secondly, the support plate 504 can effectively support the air guide hood 503 and the filter screen 501, improving overall strength and operational stability. At the same time, it helps to guide the wastewater generated during the cleaning process to quickly converge to the drain outlet for discharge, preventing water accumulation and secondary pollution or blockage, and improving cleaning efficiency and the hygienic performance of the equipment.

[0052] In an optional embodiment, the aperture of the plurality of filter screens 501 in the direction from the air inlet to the air outlet of the filter box 5 gradually decreases, so as to achieve efficient graded purification of dust particles, improve the overall filtration performance, and enhance the operational stability and economy of the system.

[0053] In an optional embodiment, the outlet end of the air guide hood 503 is parallel to the filter screen 501, and the cross-sectional shape of the outlet end is the same as that of the filter screen 501, so as to further improve the guiding effect and purification efficiency.

[0054] like Figure 2 , Figure 4 and Figure 5As shown, the water supply assembly 7 further includes: a main water supply pipe 701, a branch water supply pipe 702, an atomizing spray head 704, a distribution pipe 705, a connecting frame 706, a connecting rod 707, a rotary drive component 708, and a support component 709; the main water supply pipe 701 is located inside the mounting cavity 201 and above the filter box 5; the branch water supply pipe 702 is a forked pipe, with its straight end connected to the main water supply pipe 701, and its forked end penetrating into the filter box 5 and respectively provided with a first distribution pipe 702a and a second distribution pipe 702b; the first distribution pipe 702a is parallel to the filter screen 501, and its bottom end is equidistantly arranged with a plurality of atomizing spray heads 704; the second distribution pipe 702b is parallel to the filter screen 501, and its bottom end is provided with a plurality of atomizing spray heads 704; the second distribution pipe 702b is parallel to the filter screen 501, and its bottom end is provided with a plurality of atomizing spray heads 704; the branch water supply pipe 702a is located inside the mounting cavity 201 and above the filter box 5 ... The first distribution pipe 702a is parallel to it, and a plurality of water distribution pipes 705 are arranged at equal intervals at its bottom end; the water distribution pipes 705 are connected to the spray head 6, and the water distribution pipes 705 near the connection area are flexible pipes; the connecting frame 706 is sleeved on the outside of the connection between the water distribution pipes 705 and the spray head 6; the upper ends of the plurality of support members 709 are fixedly connected to the upper end of the inner wall of the filter box 5; the connecting rod 707 is horizontally arranged on one side of the connecting frame 706 and is rotatably connected to the adjacent support member 709; the rotary drive member 708 is arranged on the other side of the connecting frame 706 opposite to the connecting rod 707, and its output shaft is connected to the connecting frame 706 and one end is fixedly connected to the support member 709.

[0055] Understandably, through the above design, the effective distribution of the water supply pipeline allows multiple atomizing spray heads 704 to continuously spray water mist into the filter box 5, which can further purify harmful substances in the exhaust gas, making the exhaust gas more thoroughly purified when passing through the filter box 5, and reducing environmental pollution. Secondly, the rotary drive component 708 can synchronously adjust the spray angle of the spray head 6, thereby realizing dynamic spray cleaning, which greatly improves the cleaning coverage and efficiency of the filter screen 501, and avoids the problem of filter screen clogging.

[0056] In an optional embodiment, the main water supply pipe 701 is connected to an external water supply system via a first connecting valve 701a to control the water supply and ensure a stable water supply.

[0057] In an optional embodiment, the branch connecting the water supply branch pipe 702 and the second distribution pipe 702b is equipped with a solenoid valve 702c to control the water flow rate into the spray head 6, thereby further reducing resource consumption while ensuring the normal function of the filter screen 501.

[0058] like Figure 2 and Figure 3As shown, the filtration device further includes a water outlet pipe 8, which is horizontally and inclinedly embedded in the mounting cavity 201. It is connected to multiple drain outlets 502 through rigid pipes, and its outlet end is lower than the height of the connection between the rigid pipe and the outlet pipe. This is to improve the system drainage efficiency, prevent water accumulation, effectively avoid water accumulation caused by poor drainage, reduce the risk of filter material failure due to moisture or internal corrosion of the equipment, and extend the service life of the equipment.

[0059] It should be noted that the flexible tube and the rotary drive component 708 are common pipelines in the prior art, such as telescopic tubes and rotary motors, so that the spray head 6 can follow the rotary drive component 708 to adjust the spray angle. Of course, in other embodiments, other types of devices can also be used, which are not specifically limited here.

[0060] like Figure 2 As shown, the filtration device further includes: a filter cartridge 9, an exhaust fan 10, and an inspection window 11; the filter cartridge 9 is disposed in the mounting cavity 201, and its inlet end is detachably connected to the air outlet of the filter box 5; the exhaust fan is disposed on the surface of the bottom plate of the mounting cavity 201, and is detachably connected to the outlet end of the filter cartridge 9, and its outlet end is connected to a pipeline and extends to the outside of the workshop roof 2; the inspection window 11 is disposed at the bottom of the workshop roof 2 and below the filter cartridge 9, and when it is opened, the mounting cavity 201 is connected to the interior of the production workshop 1.

[0061] It is understandable that the design of the filter cartridge 9, the exhaust fan 10, and the inspection window 11 enables the filter box 5 to perform deep adsorption or interception of residual fine particulate matter and harmful gases in the air after completing primary and intermediate purification, thereby further improving air quality and ensuring that the emitted or recirculated air meets relevant environmental protection standards. At the same time, it reduces the difficulty of subsequent maintenance and filter replacement, and significantly reduces the difficulty of equipment operation and maintenance and downtime.

[0062] It should be noted that the filter cartridge 9 is a common filtration device in the prior art, such as a PTFE peritoneal filter cartridge. Of course, in other embodiments, other types of devices can also be used, which are not specifically limited here.

[0063] like Figure 6 As shown, the filtration device further includes: a gas detection sensor and a control console 12; multiple gas detection sensors are located inside the production workshop (not shown in the figure); the control console 12 is communicatively connected to the gas detection sensors and electrically connected to the blower 4, solenoid valve 702c, rotary drive component 708 and induced draft fan 10 respectively, in order to improve the intelligence level of the filtration device and enable the operating parameters to be adjusted in real time according to the pollutant concentration.

[0064] It should be noted that the control console 12 also includes an electronic device 121. The electronic device 121 includes at least a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the real-time adjustment of operating parameters based on pollutant concentration, as described in this embodiment. This avoids energy waste caused by the device operating at high power when dust concentration is low, while potentially exceeding emission standards due to insufficient processing capacity at high concentrations. It is understood that the control console 12 also maintains an electrical connection to an external power source to ensure stable power supply.

[0065] Further, the electronic device 121 in this embodiment may include a processor 1211, a network interface 1214, and a memory 1215. Additionally, the electronic device 121 may also include a user interface 1213 and at least one communication bus 1212. The communication bus 1212 is used to enable communication between these components. The user interface 1213 may include a display screen and a keyboard; optionally, the user interface 1213 may also include a standard wired interface or a wireless interface. The network interface 1214 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface). The memory 1215 may be a high-speed RAM or non-volatile memory, such as at least one disk storage device. Optionally, the memory 1215 may also be at least one storage device located remotely from the processor 1211. The memory 1215, as a computer-readable storage medium, may include an operating system, a network communication module, a user interface module, and a device control application program.

[0066] Furthermore, in the electronic device 121, the network interface 1214 can provide network communication functions and can communicate with the gas detection sensor; while the user interface 1213 is mainly used to provide an input interface for the user; and the processor 1211 can be used to call the device control application stored in the memory 1215 to adjust the operating parameters in real time according to the pollutant concentration.

[0067] It should be understood that in some feasible implementations, the processor 1211 described above may be a central processing unit (CPU), or it may be other general-purpose processors, DSPs, ASICs, FPGAs, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor. The memory 1215 may include read-only memory and random access memory, and provides instructions and data to the processor 1211.

[0068] The working principle of this utility model is as follows: During the construction of the production workshop 1, the installation cavity 201 is opened at the top of the workshop roof 2 to house the blower 4, the filter box 5, the water supply assembly 7, the water outlet pipe 8, the filter cylinder 9, and the induced draft fan 10. The duct assembly 3 is installed at the bottom of the workshop roof 2, and all components are stably connected. After the production workshop 1 is completed, during use, the air quality of the production workshop 1 is monitored by the gas detection sensor. If the air quality exceeds a set value, the power of the blower 4 can be increased via the control console 12. The duct assembly 3 then draws the exhaust gas from the production workshop 1 into the filter box 5 for preliminary filtration, and finally discharges it through the air guide hood 503 onto the surface of the filter screen 501. The exhaust gas undergoes multi-layer filtration through multiple filter screens 501, removing most harmful substances and particulate matter from the exhaust gas. Simultaneously, during the filtration process, water is delivered from the main water supply pipe 701 to the branch water supply pipe 702, and then distributed to multiple first distribution pipes 702a. The atomizing spray head 704 forms a water curtain barrier to further purify the exhaust gas, causing harmful substances and particulate matter to drip onto the support plate 504 and slide down its inclined angle to the outlet pipe 8 for discharge. Afterwards, the induced draft fan 10 introduces the pre-filtered exhaust gas into the filter cartridge 9 for final purification, ensuring the discharged gas meets emission standards. Furthermore, by periodically activating the solenoid valve 702 and the rotary drive 708, and by rotating the rotary drive 708 at small angles in both directions, the spray range of the spray head 6 is expanded, thereby thoroughly and evenly rinsing the filter screen 501 and achieving a self-cleaning effect.

[0069] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0070] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0071] In this invention, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model, and not to limit it; those skilled in the art will readily understand that the above description is only a preferred embodiment of this utility model, and is not intended to limit this utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An air filtration device for a production workshop, characterized in that, include: The components include: duct assembly (3), blower (4), filter box (5), spray head (6), and water supply assembly (7), of which: One end of the blower (4) is connected to the air duct assembly (3), and the other end is connected to the air inlet of the filter box (5); The filter box (5) includes multiple filter screens (501) arranged at equal intervals from its air inlet to its air outlet, and multiple drain outlets (502) located at its bottom. Multiple spray heads (6) are disposed inside the filter box (5) and connected to the water supply assembly (7), and the spray direction of each set of spray heads (6) is directed toward one of the filter screens (501).

2. The filtration device according to claim 1, characterized in that, The blower (4), the filter box (5) and the water supply assembly (7) are all located in the installation cavity (201), which is located in the workshop roof (2).

3. The filtration device according to claim 2, characterized in that, The filter box (5) is also provided with an air guide hood (503) and multiple support plates (504); one end of the air guide hood (503) is connected to the air inlet of the filter box (5), and the other end faces the filter screen (501); the bottom ends of the multiple support plates (504) are fixedly connected to the bottom plate of the filter box (5), and their upper ends are connected to one or more of the bottom ends of the filter screen (501), the bottom ends of the air guide hood (503), or the inner wall of the filter box (5); two support plates (504) are corresponding to one drain outlet (502) and are arranged symmetrically in a V-shape on both sides of the drain outlet (502).

4. The filtration device according to claim 3, characterized in that, The water supply assembly (7) includes: a main water supply pipe (701), a branch water supply pipe (702), an atomizing spray head (704), a distribution pipe (705), a connecting frame (706), a connecting rod (707), a rotating drive component (708), and a support component (709); wherein: The main water supply pipe (701) is located inside the installation cavity (201) and above the filter box (5); The water supply branch pipe (702) is a forked pipe, with its straight end connected to the main water supply pipe (701) and its forked end inserted into the filter box (5) and respectively provided with a first distribution pipe (702a) and a second distribution pipe (702b). The first distribution pipe (702a) is parallel to the filter screen (501), and a plurality of atomizing spray heads (704) are arranged at equal intervals at its bottom end. The second distribution pipe (702b) is parallel to the first distribution pipe (702a), and a plurality of the water distribution pipes (705) are arranged at equal intervals at its bottom end. The water distribution pipe (705) is connected to the spray head (6), and the water distribution pipe (705) near the connection area is a flexible pipe; The connecting frame (706) is sleeved on the outside of the connection between the water distribution pipe (705) and the spray head (6); The upper ends of the plurality of support members (709) are fixedly connected to the upper end of the inner wall of the filter box (5); The connecting rod (707) is horizontally disposed on one side of the connecting frame (706) and is rotatably connected to the adjacent support member (709); The rotary drive (708) is located on the other side of the connecting frame (706) relative to the connecting rod (707), and its output shaft is connected to the connecting frame (706) and one end is fixedly connected to the support (709).

5. The filtration device according to claim 4, characterized in that, The branch line connecting the water supply branch pipe (702) and the second distribution pipe (702b) is equipped with a solenoid valve (702c).

6. The filtration device according to claim 5, characterized in that, The filtration device also includes: a filter cartridge (9), an exhaust fan (10), and an inspection window (11). The filter cartridge (9) is located in the mounting cavity (201), and its inlet end is detachably connected to the air outlet of the filter box (5). The exhaust fan is located on the bottom plate surface of the mounting cavity (201), and is detachably connected to the outlet end of the filter cylinder (9). Its outlet end is connected to the pipeline and extends to the outside of the workshop roof (2). The inspection window (11) is located at the bottom of the workshop roof (2) and below the filter cylinder (9). When it is opened, the installation cavity (201) is connected to the interior of the production workshop (1).

7. The filtration device according to claim 6, characterized in that, The filtration device further includes: a gas detection sensor and a control console (12); multiple gas detection sensors are located inside the production workshop; the control console (12) is communicatively connected to the gas detection sensors and electrically connected to the blower (4), solenoid valve (702c), rotary drive (708) and induced draft fan (10) respectively.

8. The filtration device according to any one of claims 3-7, characterized in that, The aperture of the plurality of filter screens (501) gradually decreases from the air inlet to the air outlet of the filter box (5); The outlet end of the air guide hood (503) is parallel to the filter screen (501), and the cross-sectional shape of the outlet end is the same as that of the filter screen (501).

9. The filtration device according to any one of claims 2-7, characterized in that, The filter device also includes a water outlet pipe (8), which is horizontally inclined and embedded in the surface of the mounting cavity (201). It is connected to a plurality of drain outlets (502) through rigid pipes, and its outlet end is lower than the height of the connection between the rigid pipe and the outlet.

10. The filtration device according to any one of claims 2-7, characterized in that, The air duct assembly (3) includes: an air intake pipe (301), an air intake hood (302), and an air guide pipe (303); the air intake pipe (301) is located at the bottom of the workshop roof (2) via a connector and corresponds to the position of the mounting cavity (201), and a plurality of air intake hoods (302) are arranged at equal intervals at its bottom end; one end of the air guide pipe (303) is connected to the air intake pipe (301), and the other end of the air guide pipe (303) is inserted into the mounting cavity (201) and connected to the blower (4).

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