A particle dust filter type exhaust fan
By incorporating multiple layers of filters and a vibration structure within the exhaust fan, combined with a back-suction pump, the problems of dust accumulation and external pollution in the exhaust fan are solved, achieving efficient filtration and convenient maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 余海飞
- Filing Date
- 2022-11-30
- Publication Date
- 2026-06-26
AI Technical Summary
Existing exhaust fans directly discharge air containing fine dust particles into the production plant, causing environmental pollution. Furthermore, the fine dust particles tend to accumulate, leading to decreased exhaust efficiency and high maintenance costs.
A particulate dust filtration exhaust fan was designed. By setting multiple layers of filter plates and a shaking structure inside the exhaust fan, combined with a back-suction air pump, it can intercept and shake off particulate dust, prevent accumulation, and collect and store the particulate dust in a centralized manner.
It effectively filters fine dust particles in the factory air, keeps exhaust fans running efficiently, reduces maintenance frequency, avoids external pollution, and lowers maintenance costs.
Smart Images

Figure CN116816736B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of industrial exhaust fans, specifically to a particulate dust filtration exhaust fan. Background Technology
[0002] Exhaust fans need to be installed on the walls of the factory to exhaust and replace the air inside the factory. However, the environment inside the production factory contains a lot of dust particles. Directly exhausting the air outside the factory through exhaust fans will result in poor air quality and environmental pollution. At the same time, a large number of dust particles can easily accumulate at the exhaust fan outlet, which will eventually lead to a decrease in exhaust efficiency and high disassembly and maintenance costs. Summary of the Invention
[0003] The purpose of this invention is to provide a particulate dust filtration exhaust fan to overcome the above-mentioned defects in the prior art.
[0004] The present invention is achieved through the following technical solution.
[0005] This invention discloses a particulate matter filtering exhaust fan, comprising an exhaust plate, an air inlet cover rotatably mounted on the exhaust plate, an exhaust duct mounted on the exhaust plate, a mounting support strip installed inside the exhaust duct, a mounting docking block mounted on the mounting support strip, a power motor mounted on the mounting docking block, and exhaust fan blades powered by the power motor. A post-treatment unit is detachably mounted on the exhaust duct, and the post-treatment unit is equipped with an exhaust channel. The exhaust channel array has exhaust slots, each with a mating through groove. An exhaust output end is installed at the end of each exhaust slot. The post-treatment unit contains... The device includes a functional processing chamber equipped with a filter storage device. The filter storage device comprises a storage cylinder containing a back-suction pump. The storage cylinder array has a back-suction connecting groove. A mounting arc plate is slidably mounted on the storage cylinder array. A connecting plate is mounted on the mounting arc plate. A mounting tube is mounted on the connecting plate and placed within the exhaust groove. A back-suction guide groove is provided within the mounting tube and communicates with the back-suction connecting groove. A filter mounting ring is slidably mounted on the mounting tube array, and filter plates are mounted on the filter mounting ring. Sealing and blocking blocks are symmetrically mounted on the mating groove.
[0006] In a further technical solution, a support spring array is installed on the outer wall of the storage cylinder, the end of the support spring is installed on the mounting arc plate, and an annular electromagnet is installed on the outer wall of the storage cylinder.
[0007] In a further technical solution, the array inside the mounting tube is provided with a shaking groove, a shaking rod is slidably mounted on the shaking groove, a shaking spring is mounted on the shaking rod, and the filter mounting ring is mounted at the end of the shaking rod.
[0008] In a further technical solution, the storage cylinder is provided with a docking groove.
[0009] In a further technical solution, a mesh cover ring is rotatably installed on the exhaust plate, and an air inlet mesh cover is installed inside the mesh cover ring.
[0010] In a further technical solution, a filter cloth is installed inside the storage cylinder.
[0011] In a further technical solution, the rectangular array of the exhaust plates is provided with threaded holes.
[0012] The beneficial effects of this invention are:
[0013] The present invention discloses a particulate dust filtration exhaust fan. By setting up a particulate filtration system, the airflow fan is activated to draw back the turbid air in the factory into the filtration chamber. The exhaust groove is equipped with a lifting and telescopic particulate filter plate. The particulate filter plate arranged in a multi-layer array in the exhaust groove can filter and intercept particulate dust in the turbid air in the factory, so that the air discharged to the outside environment through the exhaust fan is in a clean state, avoiding the problem of particulate dust floating in the factory air being transported to the outside environment and causing pollution due to exhaust.
[0014] This invention discloses a particulate dust filtration exhaust fan. Through the setting of a particulate filtration system, multiple layers of particulate filter plates in the airflow exhaust channel intercept and filter particulate dust contained in the exhaust air. However, long-term fixed exhaust can cause the filter plates to be overloaded, resulting in a decrease in exhaust efficiency. The filter plates are connected in an elastic structure in the mounting tube groove. Through the cooperation of the mounting back suction plate and the transmission structure, the filter plates in the filtration process are shaken and vibrated, so that the particulate dust accumulated on the surface of each filter plate is shaken off into the back suction guide groove. Thus, during the exhaust process, each filter plate is in a state of high-efficiency interception and ventilation. In addition, during the shaking process, the ventilation space in the exhaust channel is increased by the up and down shaking method, which, together with the airflow back suction effect, improves the exhaust efficiency and avoids the dust spreading or polluted air being discharged due to shaking and the increased ventilation space in the exhaust channel.
[0015] This invention discloses a particulate dust filtration exhaust fan. Through the setup of a particulate filtration system, during exhaust, the filter plate mounting structure and transmission components work together to vibrate and shake the filter plate, maintaining high-efficiency filtration and preventing overload and blockage. Combined with the external adsorption structure of the back-suction storage cylinder, the filter plate mounting structure is periodically retracted. The sealing and blocking structure on the side ensures the filter tube is sealed. Simultaneously, a back-suction effect is achieved through an air pump, resulting in high-pressure extraction of dust accumulated on the filter mounting structure and filter plate. This allows for centralized collection and storage of filtered dust particles, restoring the filter structure to its initial clean state. This significantly reduces maintenance frequency and allows for direct disassembly and cleaning of accumulated dust via the storage cylinder. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0019] Figure 2 yes Figure 1 A schematic diagram of the side view structure;
[0020] Figure 3 yes Figure 2 Enlarged schematic diagram of the structure of the intermediate filtration and storage device 20;
[0021] Figure 4 yes Figure 2 Enlarged structural diagram at point A;
[0022] Figure 5 yes Figure 4 A magnified structural diagram at point B in the middle. Detailed Implementation
[0023] The following is combined Figure 1-5 The present invention will be described in detail below. For ease of description, the directions referred to below are defined as follows: the directions of up, down, left, right, front, and back mentioned below are the same as... Figure 1 The projection relationships are consistent in the up, down, left, right, front, and back directions.
[0024] A particulate matter filtering exhaust fan, as described in Figures 1-5, includes an exhaust plate 11, an air inlet cover 14 rotatably mounted on the exhaust plate 11, an exhaust duct 15 mounted on the exhaust plate 11, a mounting support strip 17 installed inside the exhaust duct 15, a mounting docking block 18 mounted on the mounting support strip 17, a power motor 19 mounted on the mounting docking block 18, and exhaust fan blades 21 powered by the power motor 19. A post-treatment mounting body 22 is detachably mounted on the exhaust duct 15, and an exhaust channel 23 is mounted on the post-treatment mounting body 22. The exhaust channel 23 is arrayed with exhaust slots 37, each with a mating through groove 45. An exhaust output end 24 is installed at the end of each exhaust slot 37. The post-treatment mounting body 22 contains functional... The processing chamber 25 is equipped with a filter storage device 20, which includes a storage cylinder 26. A back-suction air pump 34 is installed inside the storage cylinder 26. The storage cylinder 26 is arrayed with back-suction connecting grooves 27. The storage cylinder 26 is arrayed with mounting arc plates 28. The mounting arc plates 28 are equipped with connecting plates 31. The connecting plates 31 are equipped with mounting pipes 32. The mounting pipes 32 are placed inside the exhaust grooves 37. The mounting pipes 32 are equipped with back-suction guide grooves 33, which are connected to the back-suction connecting grooves 27. The mounting pipes 32 are arrayed with filter plate mounting rings 40. Filter plates 41 are installed on the filter plate mounting rings 40. Sealing and blocking blocks 38 are symmetrically installed in the mating grooves 45.
[0025] During operation, the motor 19 starts, driving the exhaust fan blades 21 to rotate at high speed. This allows air from the factory to be drawn back and exhausted through the air inlet cover 14. Air entering the exhaust duct 15 is then discharged to the outside through the exhaust channel 37 by the rotating exhaust fan blades 21. During this process, the filter plates 41 arranged in an array within the mounting pipe 32 filter out fine dust particles from the factory air, ensuring the exhaust gas is clean and preventing it from affecting the air quality outside the factory. Simultaneously, during filtration, the transmission structure on the lower side of the arc plate 28 drives the connecting plate 31 to vibrate at high frequency. This, combined with the back-suction pump 34, causes the dust intercepted by the filter plates 41 to fall into the back-suction guide channel 33 and be drawn back into the storage cylinder 26, thus preventing dust accumulation on the filter plates 41 from overloading and affecting exhaust efficiency. The problem of significantly reduced efficiency is addressed by increasing the ventilation space within the exhaust trough 37 through the up-and-down shaking of the connecting plate 31 during the shaking process. This, combined with the airflow back suction effect, improves exhaust efficiency and prevents dust from spreading or polluting air from being discharged due to shaking and the increased ventilation space of the exhaust trough 37. During the indirect stop of the exhaust operation, the transmission structure drives the mounting pipe 32 to move downward, causing the sealing block 38 to block and seal both ends of the mounting pipe 32. This allows the back suction pump 34 to perform high-pressure back suction, enabling the mounting pipe 32 and filter plate 41 to intercept and back suction particles and dust particles that cannot be dislodged by shaking onto the surface of the filter plate 41. These particles are then back suctioned to the storage cylinder 26 to achieve a cleaning effect. Finally, by disassembling the post-processing mounting body 22, the stored dust particles in the storage cylinder 26 can be cleaned, enabling convenient maintenance.
[0026] Preferably, the outer wall of the storage cylinder 26 is arrayed with support springs 29, the ends of the support springs 29 are mounted on the mounting arc plate 28, and the outer wall of the storage cylinder 26 is equipped with an annular electromagnet 30.
[0027] The position of the mounting plate 28 is controlled by the annular electromagnet 30, and the mounting tube 32 is driven to vibrate at high frequency by the combination of the support spring 29 and the on / off state of the annular electromagnet 30.
[0028] Preferably, the mounting tube 32 is provided with an array of shaking grooves 42, the shaking grooves 42 are slidably mounted with shaking rods 43, the shaking rods 43 are mounted with shaking springs 44, and the filter mounting rings 40 are mounted at the ends of the shaking rods 43.
[0029] When the filter is vibrated by the mounting tube 32, the vibration spring 44 causes the filter mounting ring 40 to shake off micro-dust particles.
[0030] Preferably, the storage cylinder 26 is provided with a docking groove 35.
[0031] When the post-treatment carrier 22 and the filter storage device 20 are pushed into the exhaust duct 15 for installation, the docking groove 35 connects with the installation docking block 18 to improve installation stability and efficiency.
[0032] Preferably, the exhaust plate 11 is rotatably mounted with a mesh cover ring 12, and an air inlet mesh cover 14 is installed inside the mesh cover ring 12.
[0033] The air inlet cover 14 is mounted on the mesh cover ring 12 to facilitate the opening of the exhaust duct 15 for maintenance and repair of the exhaust fan blades 21.
[0034] Preferably, a filter cloth 36 is installed inside the storage cylinder 26.
[0035] The micro-dust particles are intercepted in the storage cylinder 26 through the filter cloth 36.
[0036] Preferably, the rectangular array of the exhaust plate 11 is provided with threaded holes 13.
[0037] It is fixed to the wall through the threaded hole 13.
[0038] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand and implement the present invention. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.
Claims
1. A particulate matter filtering exhaust fan, comprising an exhaust plate, characterized in that: The exhaust plate is rotatably mounted with an air inlet cover. An exhaust duct is mounted on the exhaust plate. An installation support strip is installed inside the exhaust duct. An installation docking block is mounted on the installation support strip. A power motor is mounted on the installation docking block. The power motor powers the exhaust fan blades. A post-processing unit is detachably mounted on the exhaust duct. The post-processing unit is equipped with an exhaust channel. The exhaust channel array has exhaust slots. Each exhaust slot has a mating through slot. An exhaust output end is installed at the end of each exhaust slot. A functional processing chamber is provided inside the post-processing unit. The cavity is equipped with a filter storage device, which includes a storage cylinder. A back-suction air pump is installed inside the storage cylinder. The storage cylinder array is provided with a back-suction connecting groove. The storage cylinder array is slidably mounted with a mounting arc plate. A connecting plate is mounted on the mounting arc plate. A mounting tube is mounted on the connecting plate. The mounting tube is placed in the exhaust groove. A back-suction guide groove is provided inside the mounting tube. The back-suction guide groove communicates with the back-suction connecting groove. A filter plate mounting ring is slidably mounted on the mounting tube array. A filter plate is mounted on the filter plate mounting ring. Sealing and blocking blocks are symmetrically installed in the mating groove. The outer wall of the storage cylinder is arrayed with support springs, the ends of which are mounted on the mounting arc plate, and the outer wall of the storage cylinder is equipped with an annular electromagnet. The array inside the mounting tube is provided with a shaking groove, a shaking rod is slidably mounted on the shaking groove, a shaking spring is mounted on the shaking rod, and the filter mounting ring is mounted at the end of the shaking rod; The storage cylinder is provided with a docking groove.
2. The particulate matter filtering exhaust fan according to claim 1, characterized in that: The exhaust plate is rotatably mounted with a mesh cover ring, and an air inlet mesh cover is installed inside the mesh cover ring.
3. The particulate matter filtering exhaust fan according to claim 1, characterized in that: The storage cylinder is equipped with filter cloth.
4. The particulate matter filtering exhaust fan according to claim 1, characterized in that: The rectangular array of the exhaust panels is provided with threaded holes.