Exhaust device

Abstract

This utility model belongs to the field of tobacco technology and discloses an exhaust device, including an exhaust hood, a sensor, and a control module. The exhaust hood is positioned above a vibrating trough and is equipped with a lifting device that drives the exhaust hood to move vertically, ensuring that the exhaust hood has at least two states: raised and lowered. The sensor is located on the bottom end of the exhaust hood facing the vibrating trough. The control module is electrically connected to both the sensor and the lifting device. By installing the sensor on the bottom end of the exhaust hood, where the operator is easily squeezed, when the exhaust hood descends due to misoperation, the sensor at the bottom of the exhaust hood comes into contact with the operator during the cleaning process. The sensor converts the pressure into a change in resistance and sends a signal to the control module. The control module then sends a signal to the lifting device to stop descending and resume ascending, preventing the operator from being squeezed. This proactive protection of stopping upon contact significantly improves the safety of the exhaust device, resulting in a high accident prevention rate.

Description

Technical Field

[0001] This utility model relates to the field of tobacco technology, and in particular to an exhaust device. Background Technology

[0002] During tobacco processing, high-temperature steam is typically used to treat tobacco shreds with high temperature and high humidity. This process generates excess water vapor. Some of the water vapor is extracted and discharged through the exhaust device during production, while the other part mixes with tobacco dust and adheres to the conveying trough below the exhaust device, forming dirt. After production is completed, operators need to raise the exhaust device to clean the dirt in the trough.

[0003] Because the exhaust device is located above the vibrating trough, if others do not notice that someone is cleaning the vibrating trough or if someone accidentally operates the exhaust device, causing it to drop, it could pose a crushing hazard to the operator, posing a significant safety risk.

[0004] Therefore, based on the concept of inherent safety, there is an urgent need to design a new exhaust device to improve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide an exhaust device to solve the technical problem that when the exhaust device descends during the cleaning of the vibrating trough, it poses a crushing hazard to the operator who is cleaning.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The exhaust device provided by this utility model includes:

[0008] An exhaust hood is provided above the vibration groove. The exhaust hood is equipped with a lifting device that drives the exhaust hood to rise and fall in the vertical direction, so that the exhaust hood has at least a raised state and a lowered state.

[0009] A sensor is disposed on the bottom end of the exhaust hood facing the vibration groove, and the sensor is used to detect by contact whether there is a person under the exhaust hood;

[0010] A control module is electrically connected to both the sensor and the lifting device. The control module is configured to receive signals from the sensor and control the lifting device to immediately stop descending and ascend.

[0011] By installing sensors at the bottom of the exhaust hood, where operators are easily squeezed, when an operator is cleaning the vibrating trough and others are unaware of the operation or accidentally operate the lifting device, causing the hood to descend, the sensor at the bottom of the hood comes into contact with the operator during the cleaning process. The sensor is squeezed and undergoes a slight deformation, converting the pressure into a change in resistance and sending a signal to the control module. The control module determines that the operator is being squeezed and sends a signal to the lifting device to stop descending and resume ascending, preventing the operator from being squeezed. Applying sensors to tobacco machinery safety protection achieves proactive protection with immediate stop upon contact, resulting in high response efficiency, high accident prevention rate, and significantly improved safety of the exhaust device.

[0012] As a preferred embodiment of the exhaust device, the exhaust hood includes:

[0013] The cover has two open ends, one end being an air intake end and the other end being an exhaust end, with the diameter of the air intake end being larger than the diameter of the exhaust end.

[0014] An exhaust pipe is provided, with its axial direction arranged vertically. One end of the exhaust pipe is connected to the exhaust end, and the lifting device is provided on the exhaust pipe.

[0015] The hood is horn-shaped, and the suction end can cover the vibration groove to achieve more comprehensive water vapor extraction, which is discharged through the end of the exhaust pipe away from the exhaust end of the hood.

[0016] As a preferred embodiment of the exhaust device, side plates are respectively provided on both sides of the air extraction end of the hood. When the exhaust hood is in the lowered state, the two side plates are respectively located on both sides of the vibration groove.

[0017] The side panels have a barrier effect on the extraction of water vapor, resulting in better extraction efficiency.

[0018] As a preferred embodiment of the exhaust device, the sensor is a flexible thin-film pressure sensor.

[0019] Flexible thin-film pressure sensors are highly sensitive, capable of detecting minute pressure changes and achieving accurate measurement of external pressure. They also offer rapid response, reacting to external pressure quickly for rapid measurement. Made of flexible materials, they possess excellent bendability and durability, maintaining stable performance and high reliability in various application scenarios.

[0020] As a preferred embodiment of the exhaust device, two flexible thin-film pressure sensors are provided, with the two flexible thin-film pressure sensors respectively disposed on the end faces of the two side plates away from the exhaust hood.

[0021] Regardless of whether the operator stands on the left or right side of the vibratory trough, both flexible thin-film pressure sensors can perform detection.

[0022] As a preferred embodiment of the exhaust device, shock-absorbing rubber is provided between the side plate and the flexible thin-film pressure sensor.

[0023] Shock-absorbing rubber can absorb and reduce mechanical vibration, impact and noise. Through the elastic properties of rubber, it absorbs and reflects vibration energy, thus protecting the flexible thin-film pressure sensor.

[0024] As a preferred embodiment of the exhaust device, the shock-absorbing rubber has arc-shaped surfaces on both sides.

[0025] The shock-absorbing rubber has curved sides, making its cross-section a rounded rectangle. This provides space for the rubber to deform under compression, resulting in better shock absorption and stronger rebound.

[0026] As a preferred embodiment of the exhaust device, the shock-absorbing rubber is bonded to the side plate and to the flexible thin-film pressure sensor.

[0027] By using an adhesive material to fix two objects together, the structural integrity is maintained by transferring stress. The adhesive can evenly distribute stress and has good fastening properties.

[0028] As a preferred embodiment of the exhaust device, the bonding material between the shock-absorbing rubber and the side plate, as well as between the shock-absorbing rubber and the flexible thin-film pressure sensor, is an adhesive or a vulcanizing agent.

[0029] Adhesives or vulcanizing agents can form strong adhesion on many different material surfaces and are more convenient to use. Simply apply them to the objects to be bonded and wait for them to dry. The bonding surface has uniform stress distribution and long fatigue life.

[0030] As a preferred embodiment of the exhaust device, the flexible thin-film pressure sensor is provided with connecting plates on both sides, and the two connecting plates are threadedly connected to the inner and outer sides of the side plate by bolts.

[0031] The two connecting plates and the flexible diaphragm pressure sensor are arranged in a "U" shape. One connecting plate is connected to the inside of the side plate by bolts, and the other connecting plate is connected to the outside of the side plate by bolts. This allows for a detachable connection between the flexible diaphragm pressure sensor, the shock-absorbing rubber, and the exhaust hood, making it easy to replace the flexible diaphragm pressure sensor after deformation or damage. The structure is simple and easy to install and disassemble.

[0032] The beneficial effects of this utility model are:

[0033] By installing sensors at the bottom of the exhaust hood, where operators are easily squeezed, when an operator is cleaning the vibrating trough and others are unaware of the operation or accidentally operate the lifting device, causing the hood to descend, the sensor at the bottom of the hood comes into contact with the operator during the cleaning process. The sensor is squeezed and undergoes a slight deformation, converting the pressure into a change in resistance and sending a signal to the control module. The control module determines that the operator is being squeezed and sends a signal to the lifting device to stop descending and resume ascending, preventing the operator from being squeezed. Applying sensors to tobacco machinery safety protection achieves proactive protection with immediate stop upon contact, resulting in high response efficiency, high accident prevention rate, and significantly improved safety of the exhaust device. Attached Figure Description

[0034] Figure 1 This is a perspective view of the exhaust device provided in an embodiment of the present utility model;

[0035] Figure 2 This is a side view of the exhaust device provided in an embodiment of the present utility model;

[0036] Figure 3 This is a schematic diagram of the structure of the exhaust hood provided in an embodiment of the present utility model;

[0037] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.

[0038] In the picture:

[0039] 1. Exhaust hood; 11. Hood body; 111. Suction end; 112. Exhaust end; 12. Exhaust pipe; 13. Side panel;

[0040] 2. Flexible thin-film pressure sensor;

[0041] 3. Shock-absorbing rubber. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0043] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0046] Because the exhaust device is located above the vibrating trough, if others do not notice that someone is cleaning the vibrating trough or if someone accidentally operates the exhaust device, causing it to drop, it could pose a crushing hazard to the operator, posing a significant safety risk.

[0047] To solve the above problems, combined with Figures 1-4 As shown, this embodiment provides an exhaust device, including an exhaust hood 1, a sensor, and a control module. The exhaust hood 1 is positioned above the vibrating groove, and a lifting device is provided on the exhaust hood 1 to drive the exhaust hood 1 to rise and fall vertically, so that the exhaust hood 1 has at least a raised state and a lowered state. The sensor is located on the bottom end of the exhaust hood 1 facing the vibrating groove, and the sensor is used to detect whether there are personnel under the exhaust hood 1 by contact. The control module is electrically connected to the sensor and the lifting device respectively, and the control module is configured to receive the signal from the sensor and control the lifting device to immediately stop falling and rise.

[0048] Understandably, by installing the sensor on the bottom of the exhaust hood 1, where the operator is easily squeezed, when the operator is cleaning the vibrating trough and others are unaware that someone is cleaning the trough or accidentally operate the lifting device, causing the lifting device to control the exhaust hood 1 to descend, the sensor at the bottom of the exhaust hood 1 comes into contact with the operator during the cleaning operation. The sensor is squeezed and undergoes a slight deformation. The sensor converts the pressure into a change in resistance and sends a signal to the control module. The control module determines that the operator is being squeezed and sends a signal to the lifting device to stop descending and rise, preventing the operator from being squeezed. Applying the sensor to the safety protection of tobacco machinery achieves active protection of stopping the rise upon contact, with high response efficiency, high accident prevention rate, and greatly improves the safety of the exhaust device.

[0049] Since the lifting device and its specific structure are existing technologies, this embodiment will not elaborate further. For example, the lifting device may be a linear motor, a hydraulic lift, a lifting cylinder, a worm gear lift, etc.

[0050] Specifically, such as Figure 1 and Figure 2 As shown, the exhaust hood 1 includes a hood body 11 and an exhaust pipe 12. Both ends of the hood body 11 are open, with one end being an extraction end 111 and the other end being an exhaust end 112. The diameter of the extraction end 111 is larger than the diameter of the exhaust end 112. The exhaust pipe 12 is arranged vertically, with one end connected to the exhaust end 112. A lifting device is installed on the exhaust pipe 12. The hood body 11 is generally funnel-shaped, and the extraction end 111 can cover the vibrating groove to achieve more comprehensive water vapor extraction, which is then discharged through the end of the exhaust pipe 12 away from the exhaust end 112 of the hood body 11.

[0051] To improve the extraction efficiency of water vapor, such as Figure 1 As shown, side plates 13 are respectively extended on both sides of the exhaust end 111 of the hood 11. The side plates 13 have a blocking effect on the extraction of water vapor, and the extraction effect is better. When the exhaust hood 1 is in the lowered state, the two side plates 13 are respectively located on both sides of the vibration groove.

[0052] Preferably, the sensor is a flexible thin-film pressure sensor 2. The flexible thin-film pressure sensor 2 has high sensitivity, can detect minute pressure changes, and can accurately measure external pressure. It can also achieve rapid response, responding to external pressure in a short time to achieve rapid measurement. It is made of flexible material, has good flexibility and durability, and can maintain stable performance in application scenarios, with good reliability.

[0053] like Figure 3As shown, this embodiment has two flexible thin-film pressure sensors 2, which are respectively disposed on the end faces of the two side plates 13 away from the exhaust hood 1. Both flexible thin-film pressure sensors 2 can perform detection regardless of whether the operator stands on the left or right side of the vibration groove.

[0054] In addition, such as Figure 3 and Figure 4 As shown, a shock-absorbing rubber 3 is provided between the side plate 13 and the flexible thin-film pressure sensor 2. The shock-absorbing rubber 3 can absorb and reduce mechanical vibration, impact and noise. Through the elastic properties of rubber, it absorbs and reflects vibration energy, thus protecting the flexible thin-film pressure sensor 2.

[0055] like Figure 4 As shown, the shock-absorbing rubber 3 in this embodiment has arc-shaped surfaces on both sides. The arc-shaped surfaces of the shock-absorbing rubber 3 make its cross-section a monolithic rectangle (rounded corners), providing space for compression deformation, resulting in good shock absorption and stronger resilience. The shock-absorbing rubber 3 is bonded to the side plate 13 and to the flexible thin-film pressure sensor 2. The two objects are fixed together using an adhesive material, maintaining structural integrity by transmitting stress. The bonding evenly distributes stress and provides good fastening. Exemplarily, the bonding materials between the shock-absorbing rubber 3 and the side plate 13, and between the shock-absorbing rubber 3 and the flexible thin-film pressure sensor 2, are adhesives or vulcanizing agents. Adhesives or vulcanizing agents can form strong adhesion on many different material surfaces, are more convenient to use, and only need to be applied to the objects to be bonded and allowed to dry. The bonding surface has uniform stress distribution and a long fatigue life.

[0056] In other embodiments, connecting plates are respectively provided on both sides of the flexible thin-film pressure sensor 2. The two connecting plates are threadedly connected to the inner and outer sides of the side plate 13 by bolts. The two connecting plates and the flexible thin-film pressure sensor 2 are arranged in a "U" shape. One connecting plate is connected to the inner side of the side plate 13 by bolts, and the other connecting plate is connected to the outer side of the side plate 13 by bolts. This realizes a detachable connection between the flexible thin-film pressure sensor 2, the shock-absorbing rubber 3 and the exhaust cover 1, which facilitates replacement after the flexible thin-film pressure sensor 2 is deformed or damaged. The structure is simple and easy to install and disassemble.

[0057] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. Exhaust device, characterized in that include: An exhaust hood (1) is provided above the vibrating groove. The exhaust hood (1) is provided with a lifting device that drives the exhaust hood (1) to rise and fall in the vertical direction, so that the exhaust hood (1) has at least a raised state and a lowered state. A sensor is disposed on the bottom end of the exhaust hood (1) facing the vibration groove, and the sensor is used to detect by contact whether there is a person under the exhaust hood (1); A control module is electrically connected to both the sensor and the lifting device. The control module is configured to receive signals from the sensor and control the lifting device to immediately stop descending and ascend.

2. The exhaust apparatus according to claim 1, characterized by The exhaust hood (1) includes: The cover (11) has two open ends, one end being an air extraction end (111) and the other end being an exhaust end (112). The diameter of the air extraction end (111) is larger than the diameter of the exhaust end (112). An exhaust pipe (12) is provided with its axial direction in the vertical direction. One end of the exhaust pipe (12) is connected to the exhaust end (112). The lifting device is provided on the exhaust pipe (12).

3. The exhaust apparatus according to claim 2, characterized by Side plates (13) are respectively provided on the opposite sides of the exhaust end (111) of the hood (11). When the exhaust hood (1) is in the lowered state, the two side plates (13) are respectively located on the opposite sides of the vibration groove.

4. The exhaust apparatus according to claim 3, characterized by The sensor is a flexible thin-film pressure sensor (2).

5. The exhaust device according to claim 4, characterized in that, Two flexible thin-film pressure sensors (2) are provided, and the two flexible thin-film pressure sensors (2) are respectively provided on the end faces of the two side plates (13) away from the exhaust hood (1).

6. The exhaust apparatus according to claim 5, characterized by A shock-absorbing rubber (3) is provided between the side plate (13) and the flexible thin film pressure sensor (2).

7. The exhaust apparatus according to claim 6, characterized by The shock-absorbing rubber (3) has arc-shaped surfaces on both sides.

8. The exhaust apparatus according to claim 7, characterized by The shock-absorbing rubber (3) is bonded to the side plate (13), and the shock-absorbing rubber (3) is bonded to the flexible thin film pressure sensor (2).

9. The exhaust apparatus according to claim 8, characterized by The bonding materials between the shock-absorbing rubber (3) and the side plate (13) and between the shock-absorbing rubber (3) and the flexible thin film pressure sensor (2) are adhesives or vulcanizing agents.

10. The exhaust apparatus according to claim 7, characterized by The flexible thin-film pressure sensor (2) has connecting plates on both sides, and the two connecting plates are threadedly connected to the inner and outer sides of the side plate (13) by bolts.

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