A compact volatile pollutant purification device suitable for use in a vehicle cabin

Abstract

The utility model relates to purification device technical field especially suitable for small -sized volatile pollutant purification device of workshop in a kind of utility model, including frame, outlet pipe, air pipe, fan, filter plate, sealing cover, base, motor, gear and filter frame etc., frame is rotatably connected in the center of base top portion by pivot, frame right side wall is connected and is communicated with air pipe, frame top is connected and is communicated with outlet pipe, fan is installed in the inside of outlet pipe and air pipe, the direction of the inside of outlet pipe and air pipe towards port is all installed with filter plate. By filter plate in air pipe preliminary filtration, then by right side primary filter frame, left side medium -efficiency oil -proof filter frame blocks medium dust, oil mist etc., realize secondary filtration, cooperate with loudspeaker -like flow guide frame to gather stream, effectively reduce waste gas impurity, reduce subsequent VOCs processing unit load, lay foundation for fine purification, and filter frame type can be replaced as needed, adapt to different workshop pollution situation.

Description

Technical Field

[0001] This utility model relates to the field of purification device technology, and in particular to a miniaturized volatile pollutant purification device suitable for workshops. Background Technology

[0002] Industrial production processes often generate waste gas containing dust, oil mist, and volatile organic compounds (VOCs). Direct emission of these gases can cause serious harm to the atmospheric environment and human health. Therefore, before entering core VOCs treatment units (such as RTO, RCO, adsorption concentration, etc.), the waste gas usually needs to undergo effective pretreatment to remove solid particulate matter and droplets, preventing these substances from clogging or contaminating subsequent high-value treatment equipment, ensuring its long-term stable operation, and reducing maintenance costs.

[0003] In existing technologies, most pretreatment devices employ fixed-installation filtration systems with non-adjustable air inlet directions. For workshops with vast spaces, dispersed pollution sources, or complex equipment layouts, this fixed design often creates dead zones in waste gas collection, resulting in low collection efficiency and the inability to effectively capture pollutants in some areas. Furthermore, traditional filtration structures are often relatively simple, with insufficient filtration layers or weak targeting. When faced with complex pollutant compositions (such as those containing dust, oil mist, and water vapor simultaneously), they are prone to rapid clogging or incomplete filtration, increasing system air resistance and even affecting the normal operation of subsequent VOCs treatment units.

[0004] Therefore, there is an urgent need for a pre-treatment device for exhaust gas that can be flexibly adjusted to the workshop environment, has efficient multi-stage pretreatment capabilities, and is easy to maintain. Utility Model Content

[0005] In order to overcome the shortcomings mentioned in the background art, this utility model provides a miniaturized volatile pollutant purification device suitable for workshops.

[0006] Technical Solution: A miniaturized volatile pollutant purification device suitable for workshops includes a frame, an outlet pipe, an inlet pipe, a fan, filter plates, a sealing cover, a base, a motor, gears, a filter frame, a screw, a guide frame, a connecting pipe, and a housing. The frame is rotatably connected to the top center of the base via a rotating shaft. The inlet pipe is connected and communicates with the right side wall of the frame, and the outlet pipe is connected and communicates with the top of the frame. Fans are installed inside both the outlet and inlet pipes. Filter plates are installed inside both the outlet and inlet pipes facing the ports. A sealing cover is snapped into the port of the inlet pipe. Two openings are located on the front right side of the frame. There are two sliding grooves, with filter frames slidably connected at the two grooves. Mounting plates are symmetrically installed on the front sidewall of the filter frames, and screws are threaded onto each mounting plate. Matching threaded holes are opened on the front sidewall of the frame corresponding to the positions of each screw. The screws are screwed into the threaded holes. A guide frame is fixedly connected to the middle of the frame, with its air inlet facing the filter frame. A connecting pipe is connected to and communicates with the air outlet of the guide frame. The top of the connecting pipe is connected to and communicates with the housing. The top of the housing is connected to and communicates with the air outlet pipe. A motor is installed on the right side inside the base. Gears are keyed to the end of the motor output shaft and the rotating shaft, and the two gears mesh with each other.

[0007] In addition, it is particularly preferred that the inner wall of the guide frame is mirror polished.

[0008] Furthermore, it is particularly preferred that a sealing strip is embedded on the contact surface between the filter frame and the frame slide groove.

[0009] In addition, it is particularly preferred that the device also includes a first torsion spring and a rotating cover. The rotating cover is rotatably connected to the upper right side of the air outlet pipe via a support. Two first torsion springs are connected between the rotating cover and the support. In the initial state, the rotating cover seals the top port of the air outlet pipe.

[0010] Furthermore, it is particularly preferred that the device also includes a rotating plate, a second torsion spring, a pointer, and a dial. The rotating plate is rotatably connected to the left side of the housing via a pivot pin. The rotating plate is located inside the housing cavity and initially closes the communication channel between the connecting pipe and the housing. The front end of the pivot pin of the rotating plate passes through the housing wall and the front side wall of the frame in sequence and is fixedly connected to the pointer. The second torsion spring is fixedly connected between the pivot pin and the front side wall of the housing. A dial is connected to the front side wall of the frame, and the pointer points to the scale line of the dial.

[0011] Furthermore, it is particularly preferred that the dial is made of transparent acrylic material and that the scale lines on the dial are printed with fluorescent paint.

[0012] Compared with the prior art, this utility model has the following advantages: 1. It first filters impurities through the filter plate in the air inlet pipe, and then filters large dust particles through the primary filter frame on the right and medium dust and oil mist through the medium-efficiency oil-proof filter frame on the left, thus achieving secondary filtration. Combined with the funnel-shaped flow guide frame to concentrate the flow, it effectively reduces impurities in the exhaust gas, reduces the load on the subsequent VOCs treatment unit, lays the foundation for fine purification, and the filter frame type can be replaced as needed to adapt to different workshop pollution conditions.

[0013] 2. The motor drives the gears to rotate the frame horizontally, which can flexibly adjust the orientation of the air inlet pipe. This function realizes the directional extraction and all-round coverage of exhaust gas from different directions in the workshop, avoiding purification dead spots and significantly improving exhaust gas collection efficiency. It is suitable for workshop environments that are large or have complex layouts.

[0014] 3. When the airflow pushes the rotating plate on the housing, the shaft pin drives the pointer to rotate synchronously. Combined with the dial, the opening and closing amount of the rotating plate can be read intuitively. When the airflow pressure decreases, the second torsion spring drives the rotating plate to reset. The change of the pointer can accurately determine the gas flow rate and detect filter frame blockage in time, avoiding a decrease in purification efficiency due to filter frame blockage. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a cross-sectional view of the frame, air outlet pipe, and air inlet pipe of this utility model.

[0017] Figure 3 This is a cross-sectional view of the air outlet pipe component of this utility model.

[0018] Figure 4 This is a cross-sectional view of the connecting pipe component of this utility model.

[0019] In the diagram: 1. Frame, 2. Air outlet pipe, 3. Air inlet pipe, 4. Fan, 5. Filter plate, 6. Sealing cover, 7. Base, 8. Motor, 9. Gear, 10. Filter frame, 11. Screw, 12. First torsion spring, 13. Rotating cover, 14. Guide frame, 15. Connecting pipe, 16. Rotating plate, 17. Second torsion spring, 18. Pointer, 19. Dial, 20. Housing. Detailed Implementation

[0020] Example: A miniaturized volatile pollutant purification device suitable for workshops, such as... Figures 1-4As shown, the system includes a frame 1, an outlet pipe 2, an inlet pipe 3, a fan 4, a filter plate 5, a sealing cover 6, a base 7, a motor 8, a gear 9, a filter frame 10, a screw 11, a guide frame 14, a connecting pipe 15, and a housing 20. The frame 1 is rotatably connected to the top center of the base 7 via a rotating shaft. The inlet pipe 3 is connected and connected to the right side wall of the frame 1, and the outlet pipe 2 is connected and connected to the top of the frame 1. The outlet pipe 2 is used to connect to the inlet end of an external VOCs treatment unit. Fans 4 are installed inside both the outlet pipe 2 and the inlet pipe 3. The two fans 4 have opposite flow directions. The fan 4 in the inlet pipe 3 is used to draw workshop exhaust gas into the frame 1, and the fan 4 in the outlet pipe 2 is used to direct the pre-treated exhaust gas in the frame 1 towards the VOCs treatment unit. The processing unit conveys air, forming a directional airflow channel. Filter plates 5 are installed inside both the outlet pipe 2 and the inlet pipe 3, facing the port. The filter plate 5 of the inlet pipe 3 intercepts large particles of impurities at the inlet end, while the filter plate 5 of the outlet pipe 2 intercepts residual impurities at the end of the airflow. A sealing cap 6 is snapped onto the port of the inlet pipe 3 to seal it when not in operation, preventing impurities from entering. Two sliding grooves are opened on the front right side of the frame 1, with filter frames 10 slidably connected at these grooves. The right filter frame 10 is a primary filter, intercepting large particles of dust, hair, and other impurities, reducing the load on subsequent filtration. The left filter frame 10 is a medium-efficiency oil-resistant filter, intercepting medium-sized dust, oil mist, and water mist, achieving pre-treatment of exhaust gas. A sealing strip is embedded on the contact surface between the filter frame 10 and the slide groove of the frame body 1, which can effectively fill the assembly gap between the filter frame 10 and the slide groove and prevent unfiltered gas from leaking. A handle is connected to the middle of the front side wall of the filter frame 10 for easy pulling. Mounting plates are symmetrically installed on the upper and lower sides of the front side wall of the filter frame 10, and screws 11 are threadedly connected to the mounting plates. Matching threaded holes are opened on the front side wall of the frame body 1 corresponding to the positions of each screw 11. When the screw 11 is screwed into the threaded hole, the filter frame 10 can be fixed to the frame body 1. When screwed out, the fixation can be released to remove the filter frame 10. A guide frame 14 is fixedly connected to the middle of the frame body 1. The guide frame 14 has a funnel-shaped structure and its air inlet faces the filter frame. The filter frame 10 is configured to concentrate and guide the exhaust gas after filtration, thereby improving the stability of airflow delivery. The inner wall of the guide frame 14 is mirror-polished to reduce the frictional resistance of the airflow within the guide frame 14, reduce wind pressure loss, and ensure stable exhaust gas delivery efficiency. A connecting pipe 15 is connected to and connected to the air outlet of the guide frame 14. The top of the connecting pipe 15 is connected to and connected to the housing 20. The top of the housing 20 is connected to and connected to the exhaust pipe 2. A motor 8 is installed on the right side of the base 7 by bolts. Gears 9 are keyed to the end of the output shaft of the motor 8 and the rotating shaft, respectively. The two gears 9 mesh with each other and can drive the frame 1 to rotate 360° horizontally around the axis of rotation to adjust the exhaust gas extraction direction of the intake pipe 3.

[0021] like Figure 3As shown, it also includes a first torsion spring 12 and a rotating cover 13. The rotating cover 13 is rotatably connected to the upper right side of the air outlet pipe 2 via a support. Two first torsion springs 12 are connected between the rotating cover 13 and the support. In the initial state, the rotating cover 13 tightly fits the top port of the air outlet pipe 2 under the elastic force of the first torsion springs 12, realizing the non-working seal of the air outlet pipe 2.

[0022] like Figure 1 , Figure 2 and Figure 4 As shown, it also includes a rotating plate 16, a second torsion spring 17, a pointer 18, and a dial 19. The rotating plate 16 is rotatably connected to the left side of the housing 20 via a pivot pin. The rotating plate 16 is located inside the housing 20 and initially closes the communication channel between the connecting pipe 15 and the housing 20. The front end of the pivot pin of the rotating plate 16 passes through the wall of the housing 20 and the front side wall of the frame 1 in sequence, and the pointer 18 is welded thereon. The second torsion spring 17 is fixedly connected between the pivot pin and the front side wall of the housing 20. The dial 19 is fixedly connected to the front side wall of the frame 1 at a position behind the pointer 18. The pointer 18 points to the scale line of the dial 19. The dial 19 is made of transparent acrylic material, and the scale line on the dial 19 is printed with fluorescent paint. The transparent acrylic material can protect the scale line from being worn by workshop dust, and at the same time does not obstruct the reading of the pointer 18. The fluorescent paint can still clearly display the scale when the workshop light is dim, such as during night inspections or in the shadow area of ​​the equipment, thus improving the convenience of airflow monitoring.

[0023] This device needs to be used in conjunction with an external VOCs treatment unit for the purification of volatile pollutants in the workshop. Connect the outlet pipe 2 to the inlet of the external VOCs treatment unit via a flexible sealing channel. Remove the sealing cap 6 at the port of the inlet pipe 3. Then, start the two fans 4. The fans 4 inside the inlet pipe 3 generate negative pressure, drawing the workshop exhaust gas into the inlet pipe 3. After passing through the filter plate 5 inside the inlet pipe 3 to intercept impurities at the inlet end, the gas enters the frame 1. Under the pressure difference of the two fans 4, the exhaust gas flows sequentially through the primary filter on the right (intercepting large dust particles and hair) and the medium-efficiency oil-proof filter on the left (intercepting medium-sized dust particles, oil mist, and water mist), completing the exhaust gas pretreatment and reducing the purification requirements of the subsequent VOCs treatment unit. The load, after secondary filtration, the exhaust gas enters the guide frame 14, and after being concentrated by the guide frame 14, it is transported to the housing 20 through the connecting pipe 15. The thrust generated by the airflow acts on the rotating plate 16, pushing the rotating plate 16 to rotate upward around the shaft pin, releasing the seal on the channel between the connecting pipe 15 and the housing 20. The second torsion spring 17 undergoes elastic deformation simultaneously. The pretreated exhaust gas enters the housing 20 and flows to the exhaust pipe 2. After being filtered again by the filter plate 5 inside the exhaust pipe 2, the airflow thrust pushes the rotating cover 13 to rotate upward around the support, opening the top port of the exhaust pipe 2. The first torsion spring 12 undergoes elastic deformation simultaneously. The airflow finally enters the external VOCs treatment unit through the exhaust pipe 2 for fine purification.

[0024] When the rotating plate 16 rotates, the shaft pin rotates synchronously, and the pointer 18 rotates with the shaft pin and points to the corresponding scale on the dial 19. By reading the scale value pointed to by the pointer 18, the operator can obtain the opening angle of the rotating plate 16. This angle is positively correlated with the gas flow rate, thereby determining the real-time gas flow volume. At the same time, the motor 8 is started, and the output shaft of the motor 8 rotates, transmitting power to the rotating shaft through two gears 9. The rotating shaft drives the frame 1 to rotate horizontally around its axis. By adjusting the rotation angle of the frame 1, the orientation of the air inlet pipe 3 can be changed, achieving all-round extraction of exhaust gas from different areas in the workshop, improving the coverage and efficiency of exhaust gas purification. Based on the changes in gas flow volume monitored by the pointer 18 and the dial 19, the blockage status of the filter frame 10 can be determined. If the gas flow volume decreases significantly, it indicates that impurities are attached to the surface of the filter frame 10. If there is blockage, during maintenance, first stop the device operation, unscrew the screw 11 from the threaded hole in the opposite direction to release the fixation of the filter frame 10, and pull the filter frame 10 out of the slide groove through the pull handle for cleaning or replace the filter frame 10 with a filter frame of appropriate specifications according to the type of contaminants in the workshop. After maintenance, slide the filter frame 10 back into the slide groove and tighten the screw 11 to fix it. The device can then resume operation. When the device stops running, the airflow thrust in the exhaust pipe 2 disappears, and the rotating cover 13 rotates in the opposite direction under the reset force of the first torsion spring 12, resealing the top port of the exhaust pipe 2. The airflow thrust in the connecting pipe 15 disappears, and the rotating plate 16 rotates in the opposite direction under the reset force of the second torsion spring 17, resealing the channel between the connecting pipe 15 and the housing 20 to prevent external impurities from entering the device and to ensure the service life of the components.

Claims

1. A miniaturized volatile pollutant purification device suitable for workshops, characterized in that, The system includes a frame (1), an air outlet pipe (2), an air inlet pipe (3), a fan (4), a filter plate (5), a sealing cover (6), a base (7), a motor (8), a gear (9), a filter frame (10), a screw (11), a guide frame (14), a connecting pipe (15), and a housing (20). The frame (1) is rotatably connected to the top center of the base (7) via a rotating shaft. The air inlet pipe (3) is connected and connected to the right side wall of the frame (1). The air outlet pipe (2) is connected and connected to the top of the frame (1). A fan (4) is installed inside both the air outlet pipe (2) and the air inlet pipe (3). Filter plates (5) are installed inside both the air outlet pipe (2) and the air inlet pipe (3) facing the port. A sealing cover (6) is snapped into the port of the air inlet pipe (3). Two sliding grooves are opened on the front right side of the frame (1). A filter frame (10) is slidably connected to the two slides. A mounting plate is symmetrically installed on the front side wall of the filter frame (10). A screw (11) is threadedly connected to each mounting plate. A matching threaded hole is opened on the front side wall of the frame (1) corresponding to the position of each screw (11). The screw (11) is screwed into the threaded hole. A guide frame (14) is fixedly connected to the middle of the frame (1). Its air inlet is set towards the filter frame (10). A connecting pipe (15) is connected and communicated at the air outlet of the guide frame (14). A housing (20) is connected and communicated at the top of the connecting pipe (15). The top of the housing (20) is connected and communicated with the air outlet pipe (2). A motor (8) is installed on the right side inside the base (7). A gear (9) is keyed to the end of the output shaft of the motor (8) and the rotating shaft respectively. The two gears (9) mesh with each other.

2. A miniaturized volatile pollutant purification device suitable for workshops according to claim 1, characterized in that, The inner wall of the guide frame (14) is mirror polished.

3. A miniaturized volatile pollutant purification device suitable for workshops according to claim 2, characterized in that, A sealing strip is embedded on the contact surface between the filter frame (10) and the slide groove of the frame (1).

4. A miniaturized volatile pollutant purification device suitable for workshops according to claim 3, characterized in that, It also includes a first torsion spring (12) and a rotating cover (13). The upper right side of the air outlet pipe (2) is rotatably connected to the rotating cover (13) via a support. Two first torsion springs (12) are connected between the rotating cover (13) and the support. In the initial state, the rotating cover (13) seals the top port of the air outlet pipe (2).

5. A miniaturized volatile pollutant purification device suitable for workshops according to claim 4, characterized in that, It also includes a rotating plate (16), a second torsion spring (17), a pointer (18), and a dial (19). The rotating plate (16) is rotatably connected to the left side of the housing (20) via a pin. The rotating plate (16) is located in the inner cavity of the housing (20) and initially closes the communication channel between the connecting pipe (15) and the housing (20). The front end of the pin of the rotating plate (16) passes through the wall of the housing (20) and the front side wall of the frame (1) in sequence, and is fixedly connected to the pointer (18). The second torsion spring (17) is fixedly connected between the pin and the front side wall of the housing (20). The dial (19) is connected to the front side wall of the frame (1), and the pointer (18) points to the scale line of the dial (19).

6. A miniaturized volatile pollutant purification device suitable for workshops according to claim 5, characterized in that, The dial (19) is made of transparent acrylic material, and the scale lines on the dial (19) are printed with fluorescent paint.

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