Adjustable exhaust pipe for oil fume purifier

Abstract

The utility model discloses an adjustable smoke exhaust pipe for oil fume purifier, including connecting pipe, L shape smoke exhaust pipe and connecting piece, both ends of connecting piece all are fixedly connected with the connecting flange, and the both ends of connecting piece are connected with connecting pipe and L shape smoke exhaust pipe through connecting flange respectively, and connecting pipe communicates with the smoke exhaust mouth of external oil fume purifier, and the inner side wall of connecting piece is rotatably connected with the pivot, and the pivot surface is fixedly connected with the adjusting plate, the utility model discloses can easily complete angle regulation, has improved operation convenience, realizes the continuous adjustable of smoke exhaust section, and operating personnel can accurately control the smoke exhaust amount according to the oil fume production, avoids the energy waste of low load, solves the emission bottleneck of high load, can greatly reduce the grease adhesion rate, makes the pipeline inner wall clean more convenient, reduces the bacterial breeding and pipeline blockage problem caused by the accumulated oil.

Description

Technical Field

[0001] This utility model relates to the field of oil fume purification technology, specifically an adjustable exhaust pipe for an oil fume purifier. Background Technology

[0002] In the catering and industrial fume purification fields, the exhaust pipe, as the core connecting component between the fume purifier and the external exhaust system, directly affects the fume emission efficiency, equipment operational stability, and ease of maintenance. Currently, fume purifier exhaust pipes on the market generally suffer from several defects: lack of exhaust volume adjustment function or rudimentary adjustment structure; most are fixed-diameter designs, unable to flexibly adjust the exhaust cross-section according to the amount of fume generated, easily leading to energy waste, poor exhaust, and backflow of fumes; the inner wall is prone to grease accumulation and poor heat insulation, with grease easily adhering to the pipe wall, making cleaning difficult and prone to bacterial growth; the outer wall lacks an effective heat insulation layer, and high temperatures can easily cause excessively high outer wall temperatures, posing safety hazards; some simple adjustment devices lack self-locking functions, and the adjusted angle is easily deflected by airflow impact, failing to maintain a stable exhaust state. Therefore, those skilled in the art provide an adjustable exhaust pipe for fume purifiers to solve the problems mentioned in the background art. Utility Model Content

[0003] The purpose of this invention is to provide an adjustable exhaust pipe for an oil fume purifier to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: An adjustable exhaust pipe for an oil fume purifier includes a connecting pipe, an L-shaped exhaust pipe, and a connector. Both ends of the connector are fixedly connected to connecting flanges. The two ends of the connector are respectively connected to the connecting pipe and the L-shaped exhaust pipe through the connecting flanges. The connecting pipe is connected to the exhaust port of the external oil fume purifier. A rotating shaft is rotatably connected to the inner side wall of the connector, and an adjustment plate is fixedly connected to the surface of the rotating shaft.

[0005] Furthermore, the adjusting plate is disc-shaped and abuts against the inner wall of the connector.

[0006] Furthermore, the connecting flanges are threaded together with evenly distributed reinforcing ribs.

[0007] Furthermore, a housing is fixedly connected to the upper surface of the adjustment plate, and a worm gear is rotatably connected to the inner side wall of the housing, with one end of the worm gear fixedly connected to the end of the rotating shaft.

[0008] Furthermore, the inner wall of the housing is also rotatably connected to a worm gear via a bearing, and the worm gear meshes with the worm wheel.

[0009] Furthermore, a rotating handle is rotatably connected to the side wall of the housing, and one end of the rotating handle is fixedly connected to the end of the worm shaft.

[0010] Furthermore, the inner wall of the L-shaped exhaust pipe is coated with an anti-oil-accumulation coating, specifically a polytetrafluoroethylene (PTFE) layer.

[0011] Furthermore, a heat insulation layer is fixedly connected to the outer wall of the L-shaped exhaust pipe, specifically an outer layer of aluminum foil.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The design of the rotary handle and worm gear mechanism amplifies and transmits the operator's rotational force to the worm wheel through the worm, achieving the effect of driving a large load with a small torque. Even when the adjustment plate is in contact with the pipe wall, the angle can be easily adjusted, improving the convenience of operation. The structural design of the worm gear driving the adjustment plate enables continuous adjustment of the smoke exhaust section. The operator can accurately control the smoke exhaust volume according to the amount of oil fume generated, which avoids energy waste at low loads and solves the emission bottleneck at high loads. At the same time, the self-locking performance of the worm gear mechanism ensures that the adjustment angle is stable and reliable and will not deviate due to airflow impact or equipment vibration, ensuring the stability of the smoke exhaust system operation.

[0013] 2. The connecting flanges at both ends of the connector, along with evenly distributed reinforcing ribs, significantly improve the structural strength and rigidity of the connection, effectively resisting deformation caused by oil fume temperature fluctuations and airflow impacts. This avoids the sealing loosening problems that easily occur in traditional connection methods. This reinforced structure extends the service life of the device and reduces the possibility of oil fume leakage, meeting environmental emission requirements. The PTFE anti-oil coating on the inner side of the L-shaped exhaust pipe greatly reduces the grease adhesion rate, making it easier to clean the inner wall of the pipe. This reduces bacterial growth and pipe blockage caused by oil accumulation, lowering maintenance costs. The outer aluminum foil insulation layer effectively blocks the high temperature inside the pipe from being transferred to the outside, preventing accidental burns to operators and the safety hazards of high temperature igniting surrounding items, thus improving the safety of equipment use. Attached Figure Description

[0014] Figure 1 A schematic diagram of the overall structure of an adjustable exhaust pipe for an oil fume purifier; Figure 2 A side view of an adjustable exhaust pipe for an oil fume purifier; Figure 3 This is a schematic diagram of the connecting part in an adjustable exhaust pipe for an oil fume purifier. Figure 4 A schematic diagram of the internal structure of the casing of an adjustable exhaust pipe for an oil fume purifier; Figure 5 An adjustable exhaust pipe for an oil fume purifier Figure 4 Side view; Figure 6 This is a cross-sectional view of an L-shaped exhaust pipe in an adjustable exhaust pipe for an oil fume purifier.

[0015] In the diagram: 1. Connecting pipe; 2. L-shaped exhaust pipe; 201. Anti-oil coating; 202. Insulation layer; 3. Connecting parts; 4. Connecting flange; 5. Shell; 6. Reinforcing rib; 7. Rotating shaft; 8. Adjusting plate; 9. Worm gear; 10. Bearing; 11. Worm; 12. Rotating handle. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-6This utility model provides an embodiment of an adjustable exhaust pipe for an oil fume purifier, comprising a connecting pipe 1, an L-shaped exhaust pipe 2, and a connector 3. Connecting flanges 4 are fixedly connected to both ends of the connector 3. The connecting pipe 1 and the L-shaped exhaust pipe 2 are respectively connected to both ends of the connector 3 via the connecting flanges 4. The connecting pipe 1 communicates with the exhaust port of the external oil fume purifier. A rotating shaft 7 is rotatably connected to the inner wall of the connector 3. An adjusting plate 8 is fixedly connected to the surface of the rotating shaft 7. The adjusting plate 8 is disc-shaped and abuts against the inner wall of the connector 3. Reinforcing ribs 6 are threaded between the connecting flanges 4 and evenly distributed. A housing 5 is fixedly connected to the upper surface of the adjusting plate 8. A worm gear 9 is rotatably connected to the inner wall of the housing 5, and one end of the worm gear 9 is fixedly connected to the shaft end of the rotating shaft 7. A worm 11 is also rotatably connected to the inner wall of the housing 5 via a bearing 10, and the worm 11 meshes with the worm gear 9. A rotating handle 12 is rotatably connected to the side wall of the housing 5, and one end of the rotating handle 12 is fixedly connected to the shaft end of the worm 11. During the assembly and connection stage, the device achieves a stable connection between the connecting pipe 1 and the L-shaped exhaust pipe 2 through the connector 3. The connecting flanges 4 at both ends of the connector 3 are matched with the corresponding interfaces of the connecting pipe 1 and the L-shaped exhaust pipe 2, respectively. After initial fixing with bolts, the reinforcing ribs 6 evenly distributed between the connecting flanges 4 are further reinforced by threaded connections to form a more rigid overall structure, effectively resisting the stress impact caused by the flow of oil fumes and temperature changes. One end of the connecting pipe 1 is sealed and connected to the exhaust port of the external oil fume purifier, forming an oil fume entry channel. The L-shaped exhaust pipe 2 achieves the direction of smoke exhaust through a bending structure to adapt to the space requirements of different installation scenarios. The device adopts a modular disassembly structure of the connecting pipe 1, connector 3, and L-shaped exhaust pipe 2. Each component can be quickly assembled and disassembled through flanges. Whether it is the initial installation to adapt to different scenarios or the later inspection and replacement of individual components, it has the advantage of simple operation and reduces the labor cost of installation and maintenance.

[0018] In this embodiment, the inner wall of the L-shaped exhaust pipe 2 is coated with an anti-oil-accumulation coating 201, which is specifically a polytetrafluoroethylene (PTFE) layer. A heat insulation layer 202 is fixedly connected to the outer wall of the L-shaped exhaust pipe 2, which is specifically an aluminum foil outer layer. The PTFE anti-oil-accumulation coating 201 on the inner wall of the L-shaped exhaust pipe 2 utilizes its non-stick properties to reduce the adhesion of grease in the fumes to the pipe wall. The aluminum foil heat insulation layer 202 on the outer wall, by blocking heat transfer, reduces the temperature of the outer wall of the pipe, achieving the auxiliary functions of preventing oil accumulation and providing safe heat insulation. The PTFE anti-oil-accumulation coating 201 on the inner side of the L-shaped exhaust pipe 2 significantly reduces the grease adhesion rate, making cleaning the inner wall of the pipe easier, reducing bacterial growth and pipe blockage caused by oil accumulation, and lowering maintenance costs. The aluminum foil heat insulation layer 202 on the outer side effectively blocks the transfer of high temperature from inside the pipe to the outside, avoiding accidental burns to operators and the safety hazard of high temperature igniting surrounding items, thus improving the safety of equipment use.

[0019] During the smoke exhaust volume adjustment stage, the core mechanism relies on the worm gear 9 and worm 11 transmission mechanism to drive the adjustment plate 8 to rotate. The operator rotates the handle 12 on the outside of the housing 5, which drives the worm 11, which is fixedly connected to the handle inside the housing 5, to rotate. Since the worm 11 and the worm gear 9 mesh with each other, the rotational motion of the worm 11 is converted into the circular motion of the worm gear 9. One end of the worm gear 9 is fixedly connected to the rotating shaft 7 that penetrates the inner wall of the connecting piece 3, thereby driving the rotating shaft 7 to rotate synchronously. The disc-shaped adjustment plate 8 on the surface of the rotating shaft 7 rotates with the rotating shaft 7. Because the adjustment plate 8 is in close contact with the inner wall of the connecting piece 3, the adjustment plate 8 rotates with the rotating shaft 7. The change in its rotation angle directly alters the cross-sectional area of ​​the exhaust pipe inside the connector 3. When the adjusting plate 8 is completely parallel to the exhaust direction, the exhaust cross-section is at its maximum, and the exhaust volume reaches its peak. When the adjusting plate 8 rotates to a certain angle with the exhaust direction, the exhaust cross-section decreases, and the exhaust volume decreases accordingly. When the adjusting plate 8 is completely perpendicular to the exhaust direction, the exhaust channel can be temporarily closed. At the same time, the worm gear 9 and worm 11 mechanism have self-locking characteristics. After adjustment, no additional fixing device is needed, and the adjusting plate 8 can be maintained at the target angle, avoiding positional displacement caused by airflow impact.

[0020] The design of the rotating handle 12 and the worm gear 9 and worm 11 mechanism amplifies and transmits the operator's rotational force to the worm gear 9 through the worm 11, achieving the effect of driving a large load with a small torque. Even when the adjusting plate 8 is in contact with the pipe wall, the angle can be easily adjusted, improving the ease of operation. The structural design of the worm gear 9 and worm 11 driving the adjusting plate 8 enables continuous adjustment of the smoke exhaust section. The operator can accurately control the smoke exhaust volume according to the amount of oil fume generated, which avoids energy waste at low loads and solves the emission bottleneck at high loads. At the same time, the self-locking performance of the worm gear 9 and worm 11 mechanism ensures that the adjustment angle is stable and reliable, and will not deviate due to airflow impact or equipment vibration, ensuring the stability of the smoke exhaust system operation; the connecting flanges 4 at both ends of the connector 3 are equipped with The evenly distributed reinforcing ribs 6 significantly improve the structural strength and rigidity of the connection parts, effectively resisting deformation caused by oil fume temperature fluctuations and airflow impact, avoiding the sealing loosening problem that is prone to occur in traditional connection methods. This reinforced structure extends the service life of the device, while reducing the possibility of oil fume leakage and meeting environmental emission requirements. The polytetrafluoroethylene anti-oil coating 201 on the inner side of the L-shaped exhaust pipe 2 greatly reduces the grease adhesion rate, making it easier to clean the inner wall of the pipe, reducing bacterial growth and pipe blockage caused by oil accumulation, and reducing operation and maintenance costs. The aluminum foil heat insulation layer 202 on the outer side effectively blocks the high temperature inside the pipe from being transmitted to the outside, avoiding the safety hazards of accidental burns to operators and high temperature igniting surrounding items, and improving the safety of equipment use.

[0021] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. An adjustable exhaust pipe for an oil fume purifier, characterized in that, It includes a connecting pipe (1), an L-shaped exhaust pipe (2) and a connector (3). Both ends of the connector (3) are fixedly connected to a connecting flange (4). The two ends of the connector (3) are respectively connected to the connecting pipe (1) and the L-shaped exhaust pipe (2) through the connecting flange (4). The connecting pipe (1) is connected to the exhaust port of the external oil fume purifier. The inner side wall of the connector (3) is rotatably connected to a rotating shaft (7). An adjusting plate (8) is fixedly connected to the surface of the rotating shaft (7).

2. The adjustable exhaust pipe for an oil fume purifier according to claim 1, characterized in that, The adjusting plate (8) is disc-shaped and abuts against the inner wall of the connecting piece (3).

3. The adjustable exhaust pipe for an oil fume purifier according to claim 1, characterized in that, The connecting flanges (4) are threaded together with uniformly arranged reinforcing ribs (6).

4. The adjustable exhaust pipe for an oil fume purifier according to claim 1, characterized in that, The upper surface of the adjusting plate (8) is fixedly connected to the housing (5), and the inner side wall of the housing (5) is rotatably connected to the worm gear (9), and one end of the worm gear (9) is fixedly connected to the shaft end of the rotating shaft (7).

5. The adjustable exhaust pipe for an oil fume purifier according to claim 4, characterized in that, The inner wall of the housing (5) is also rotatably connected to a worm (11) via a bearing (10), and the worm (11) meshes with the worm wheel (9).

6. The adjustable exhaust pipe for an oil fume purifier according to claim 4, characterized in that, The housing (5) has a rotating handle (12) rotatably connected to its side wall, and one end of the rotating handle (12) is fixedly connected to the shaft end of the worm (11).

7. The adjustable exhaust pipe for an oil fume purifier according to claim 1, characterized in that, The inner wall of the L-shaped exhaust pipe (2) is coated with an anti-oil accumulation coating (201), which is specifically a polytetrafluoroethylene layer.

8. The adjustable exhaust pipe for an oil fume purifier according to claim 1, characterized in that, The outer wall of the L-shaped exhaust pipe (2) is fixedly connected with a heat insulation layer (202), which is specifically an outer layer of aluminum foil.

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