A back draft windbox

Abstract

The utility model relates to exhaust air bellow technical field especially, relate to a back -leaning air bellow, its technical scheme includes the protection frame, the inside fixed connection of protection frame has volute, the outside of protection frame is equipped with the shell, the volute one side is equipped with the exhaust port, the volute one side close to the exhaust port is installed and has the filter frame, the volute volute one side away from is provided with the replacement structure, the replacement structure includes the sliding slot, filter frame and sliding block, the volute one side close to the protection frame is provided with the blocking structure, and the blocking structure includes the blocking frame, the pivot and the blocking board, the volute upper and lower inner wall to the volute one side close to the protection frame is equipped with the sliding slot, the inside sliding connection of sliding slot has the sliding block, the inner wall fixed connection of sliding block has filter frame, the inner wall fixed connection of filter frame has filter screen, the volute volute one side away from fixed connection has the blocking frame, and the both sides of blocking frame are equipped with the through -hole, the utility model has the advantage that the replaceable filter screen can be set to filter the dust discharged.

Description

Technical Field

[0001] This utility model relates to the field of exhaust box technology, specifically a rear-tilted air box. Background Technology

[0002] Backward-curved air boxes, typically referring to backward-curved impeller air boxes, are widely used in industrial and civil ventilation systems, particularly in factory dust removal, painting production lines, and ventilation of large buildings. Simultaneously, due to their low noise and high air volume characteristics, they are also suitable for hotels, restaurants, auditoriums, theaters, basements, and other places requiring low-noise, high-volume ventilation and smoke extraction. These air box devices feature an internal impeller with its rotation axis tilted backward. This design causes the airflow to accelerate under the action of the impeller and flow backward, thus creating a strong wind.

[0003] Existing backward-inclined air boxes, when expelling indoor air or inhaling outdoor air, usually carry and stir up various impurities such as dust, which can easily cause air pollution. In addition, the internal filter screen is usually fixed and difficult to disassemble and clean. Furthermore, the external exhaust port is usually a fixed barrier structure, which will block the air when it is necessary to expel or inhale for a short time and cannot completely seal the exhaust port.

[0004] Therefore, it is necessary to provide a new backward-inclined bellows to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a backward-tilting bellows.

[0006] The rear-tilting bellows provided by this utility model includes:

[0007] The protective frame has a volute fixedly connected to its inner side and an outer shell fitted on its outer side. An exhaust port is provided on one side of the volute.

[0008] A filter frame is installed inside the volute on the side near the exhaust port.

[0009] The replacement structure is provided on the side of the exhaust port away from the volute. The replacement structure includes a groove, a filter frame and a slider.

[0010] The vent is equipped with a blocking structure on the side near the protective frame. The blocking structure includes a blocking frame, a rotating shaft, and a blocking plate.

[0011] Preferably, the upper and lower inner walls of the exhaust port are provided with corresponding grooves, and a slider is slidably connected inside each groove. A filter frame is fixedly connected to the inner walls of the two sliders facing each other, and impurities in the air can be filtered through the filter screen.

[0012] Preferably, a blocking frame is fixedly connected to the side of the exhaust port away from the volute. The blocking frame has through holes on both sides, and multiple sets of through holes are provided. A rotating shaft is slidably connected inside each set of through holes. The ends of the multiple sets of rotating shafts are threaded. An adjusting frame is fixedly connected to the outside of the blocking frame. A second rotary motor is fixedly connected to the top of the adjusting frame. A through hole is provided at the top of the adjusting frame. A threaded rod is fixedly connected to the lower output end of the second rotary motor through the through hole. The outer thread of the threaded rod is engaged with the threads of the multiple sets of rotating shafts. The second rotary motor, in conjunction with the threaded rod, can drive the rotating shaft to rotate.

[0013] Preferably, the portion of the multiple sets of rotating shafts located inside the adjusting frame has a baffle plate fixedly connected to its outer wall, and the ends of adjacent baffle plates can be connected together, so that the exhaust port can be blocked by the baffle plates.

[0014] Preferably, a first rotary motor is fixedly connected to one side of the volute, and a through hole is opened on one side of the volute. The inner output end of the first rotary motor passes through the through hole into the inside of the volute, and a fan is fixedly connected to the output end. The fan allows air to circulate.

[0015] Preferably, a handle is fixedly connected to the outside of the filter frame, which allows the filter frame to be easily removed.

[0016] Preferably, wires are fixedly connected to the outside of the first and second rotary motors, and the power and control signals from the outside can be transmitted to the various electronic components through the wires.

[0017] Preferably, an air inlet is provided on the side of the volute near the protective frame, through which indoor air can be discharged.

[0018] Compared with related technologies, the backward-tilting bellows provided by this utility model has the following beneficial effects: This utility model provides a backward-tilting bellows;

[0019] 1. This utility model can filter impurities in the air by setting a filter frame. When it is necessary to filter the air flowing through the bellows, the filter frame can be inserted into the slide groove by manually holding the handle. The filter frame is inserted into the slide groove by the slider. When the air is discharged or discharged through the impeller, it is filtered by the filter screen. When it is necessary to clean the filter screen, the filter frame can be pulled out by manually holding the handle through the slide groove and the slider. Thus, the filter frame can filter impurities in the air and can be quickly disassembled for easy cleaning.

[0020] 2. This utility model can block the outside of the exhaust port through the set blocking structure. When the bellows stops working, the lower output end of the second rotary motor can be controlled by the controller on the outside to rotate, which drives the fixed threaded rod to rotate, drives the multiple sets of meshing shafts to rotate, and drives the multiple sets of blocking plates to block and seal the inside of the blocking frame, thereby blocking the outside of the exhaust port and protecting the inside of the bellows. Attached Figure Description

[0021] Figure 1 is a schematic diagram of the overall structure of the rear-tilted bellows of this utility model;

[0022] Figure 2 is a top sectional view of the rear-inclined bellows structure of this utility model;

[0023] Figure 3 is a schematic diagram of the side-mounted brittle structure of the rear-tilted air box of this utility model.

[0024] The following are the labels in the diagram: 1. Protective frame; 2. Volute; 3. Exhaust port; 4. First rotary motor; 5. Fan wheel; 6. Baffle frame; 7. Shaft; 8. Adjusting frame; 9. Second rotary motor; 10. Threaded rod; 11. Slide groove; 12. Filter frame; 13. Slider; 14. Filter screen; 15. Handle; 16. Baffle plate; 17. Wire; 18. Air inlet; 19. Outer casing. Detailed Implementation

[0025] 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 merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0027] Please refer to Figures 1 to 3. An embodiment of this utility model provides a backward-tilting air box, the backward-tilting air box comprising:

[0028] The protective frame 1 has a volute 2 fixedly connected to its inner side and an outer shell 19 fitted on its outer side. An exhaust port 3 is provided on one side of the volute 2.

[0029] A filter frame 12 is installed inside the volute 2 on the side near the exhaust port 3;

[0030] The replacement structure is provided on the side of the exhaust port 3 away from the volute 2. The replacement structure includes a slide groove 11, a filter frame 12 and a slider 13.

[0031] A blocking structure is provided on the side of the exhaust port 3 near the protective frame 1. The blocking structure includes a blocking frame 6, a rotating shaft 7, and a blocking plate 16.

[0032] It should be noted that when the air circulating in the bellows needs to be filtered, the filter frame 12 can be inserted into the slide groove 11 by manually holding the handle 15. The slider 13 drives the filter frame 12 into the slide groove 11. When the air is discharged or discharged through the impeller 5, it is filtered by the filter screen 14. When the filter screen 14 needs to be cleaned, the filter frame 12 can be pulled out by manually holding the handle 15 through the slide groove 11 and the slider 13. This allows the filter to filter impurities in the air and is quick to disassemble for easy cleaning. When the bellows stops working, the lower output end of the second rotary motor 9 can be rotated by the controller on the outside. This rotates the fixed threaded rod 10, which in turn rotates the multiple sets of rotating shafts 7 that are meshed together. This causes the multiple sets of baffle plates 16 to block and seal the inside of the baffle frame 6, thereby blocking and protecting the inside of the bellows from the outside of the exhaust port.

[0033] In the embodiments of this utility model, please refer to Figures 1 and 3. The upper and lower inner walls of the exhaust port 3 are provided with corresponding sliding grooves 11. A slider 13 is slidably connected inside each sliding groove 11. A filter frame 12 is fixedly connected to the inner walls of the two sliders 13. A filter screen 14 is fixedly connected to the inner wall of the filter frame 12. Impurities in the air can be filtered through the filter screen 14.

[0034] In the embodiments of this utility model, please refer to Figures 1 and 3. A blocking frame 6 is fixedly connected to the side of the exhaust port 3 away from the volute 2. Through holes are opened on both sides of the blocking frame 6. Multiple sets of through holes are opened. Rotating shafts 7 are slidably connected inside the multiple sets of through holes. The ends of the multiple sets of rotating shafts 7 are threaded. An adjusting frame 8 is fixedly connected to the outside of the blocking frame 6. A second rotary motor 9 is fixedly connected to the top of the adjusting frame 8. A through hole is opened at the top of the adjusting frame 8. A threaded rod 10 is fixedly connected to the lower output end of the second rotary motor 9 through the through hole. The outer thread of the threaded rod 10 is engaged with the threads of the multiple sets of rotating shafts 7. The rotating shafts 7 can be driven to rotate by the second rotary motor 9 in conjunction with the threaded rod 10.

[0035] In the embodiments of this utility model, please refer to Figures 1 and 3. The portion of the multiple sets of rotating shafts 7 located inside the adjusting frame 8 has a baffle plate 16 fixedly connected to its outer wall. The ends of adjacent baffle plates can be connected together. The baffle plate 16 can block the exhaust port 3.

[0036] In the embodiments of this utility model, please refer to Figures 1 and 3. A first rotary motor 4 is fixedly connected to one side of the volute 2. A through hole is opened on one side of the volute 2. The inner output end of the first rotary motor 4 passes through the through hole into the interior of the volute 2. A fan wheel 5 is fixedly connected to the output end. Air can circulate through the fan wheel 5.

[0037] In the embodiments of this utility model, please refer to Figures 1 and 3. A handle 15 is fixedly connected to the outside of the filter frame 12, and the filter frame 12 can be easily removed by means of the handle 15.

[0038] In the embodiments of this utility model, please refer to Figures 1 and 3. The outer sides of the first rotary motor 4 and the second rotary motor 9 are fixedly connected with wires 17. Through the wires 17, the external power and control signals can be transmitted to the various electronic components.

[0039] In the embodiments of this utility model, please refer to Figures 1 and 3. An air inlet 18 is provided on the side of the volute 2 near the protective frame 1, through which indoor air can be discharged.

[0040] The working principle of the rear-tilted bellows provided by this utility model is as follows:

[0041] When in use, firstly, when it is necessary to filter the air circulating in the bellows, the filter frame 12 can be inserted into the slide groove 11 by manually holding the handle 15. The slider 13 drives the filter frame 12 into the slide groove 11. When the air is discharged or discharged through the impeller 5, it is filtered by the filter screen 14. When it is necessary to clean the filter screen 14, the filter frame 12 can be pulled out by manually holding the handle 15 through the slide groove 11 and the slider 13. This allows the filter to filter impurities in the air and is quick to disassemble for easy cleaning. When the bellows stops working, the lower output end of the second rotary motor 9 can be rotated by the controller on the outside. This drives the fixed threaded rod 10 to rotate, which drives the multiple sets of rotating shafts 7 to rotate. This drives the multiple sets of baffle plates 16 to block and seal the inside of the baffle frame 6, thereby blocking and protecting the inside of the bellows from the outside of the exhaust port.

[0042] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A backward-inclined bellows, characterized in that, include: A protective frame (1) is fixedly connected to a volute (2) on its inner side, and an outer shell (19) is fitted on the outer side of the protective frame (1). An exhaust port (3) is opened on one side of the volute (2). A filter frame (12) is installed inside the volute (2) on the side near the exhaust port (3). Replacement structure, the exhaust port (3) is provided on the side away from the volute (2) and the replacement structure includes a slide groove (11), a filter frame (12) and a slider (13). The exhaust port (3) is provided with a blocking structure on the side near the protective frame (1). The blocking structure includes a blocking frame (6), a rotating shaft (7), and a blocking plate (16). The upper and lower inner walls of the exhaust port (3) are provided with corresponding sliding grooves (11). A slider (13) is slidably connected inside each sliding groove (11). A filter frame (12) is fixedly connected to the inner walls of the two sliders (13) respectively. A filter screen (14) is fixedly connected to the inner wall of the filter frame (12). A blocking frame (6) is fixedly connected to the side of the exhaust port (3) away from the volute (2). Through holes are opened on both sides of the blocking frame (6). Multiple sets of through holes are opened. Rotating shafts (7) are slidably connected inside the multiple sets of through holes. Threads are opened at the ends of the multiple sets of rotating shafts (7). An adjusting frame (8) is fixedly connected to the outside of the blocking frame (6). A second rotary motor (9) is fixedly connected to the top of the adjusting frame (8). A through hole is opened at the top of the adjusting frame (8). A threaded rod (10) is fixedly connected to the lower output end of the second rotary motor (9) through the through hole. The outer thread of the threaded rod (10) is engaged with the threads of the multiple sets of rotating shafts (7).

2. The backward-tilting bellows according to claim 1, characterized in that: The portion of each of the multiple sets of rotating shafts (7) located inside the adjusting frame (8) has a baffle plate (16) fixedly connected to its outer wall.

3. The backward-inclined bellows according to claim 1, characterized in that: A first rotary motor (4) is fixedly connected to one side of the volute (2). A through hole is opened on one side of the volute (2). The inner output end of the first rotary motor (4) passes through the through hole into the volute (2). A wind turbine (5) is fixedly connected to the output end.

4. A backward-tilting bellows according to claim 1, characterized in that: A handle (15) is fixedly connected to the outside of the filter frame (12).

5. A backward-inclined bellows according to claim 3, characterized in that: The first rotary motor (4) and the second rotary motor (9) are fixedly connected with wires (17).

6. A backward-inclined bellows according to claim 1, characterized in that: The volute (2) has an air inlet (18) on the side near the protective frame (1).

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