Fan detection mechanism and flue smoke exhaust device

Abstract

The invention relates to the technical field of draught fan smoke exhaust, in particular to a draught fan detection mechanism and a flue smoke exhaust device.The draught fan detection mechanism comprises a connecting pipe frame used for being connected with a flue; the smoke exhauster is arranged in the connecting pipe frame and is connected with the connecting pipe frame; the connecting piece is arranged on the inner side of the connecting pipe frame and rotatably connected with the connecting pipe frame, and the connecting piece is fixedly connected with blades of the smoke ventilator and used for enhancing the rotating stability of the blades; and the sliding assembly comprises a rotating part and a sliding part, and the rotating part is driven by the connecting piece to rotate. The beneficial effect of the invention is that the bolt loosening state can be visually reflected through the synergistic effect of the sliding assembly and the warning member. The sliding assembly comprises a rotating part and a sliding part, is matched with the friction part to achieve power transmission, and drives the warning block to slide in the color developing part through the rope body to conduct state indication.

Description

Technical Field

[0001] The present invention relates to the technical field of fan smoke exhaust technology, in particular to a fan detection mechanism and a flue smoke exhaust device. Background Art

[0002] With the widespread application of industrial production and civil facilities, flue exhaust systems play an important role in ensuring the effective discharge of flue gas, preventing environmental pollution and ensuring the safe operation of equipment. Flue exhaust devices usually include connecting pipe racks, smoke exhaust fans and related connecting components, which are used to guide flue gas from combustion equipment or industrial processes to the external environment. As the core power component, the smoke exhaust fan generates airflow through high-speed rotating blades to accelerate the discharge of flue gas. However, during the long-term operation of the smoke exhaust fan, impurities such as dust, oil or particulate matter are easily adhered to the surface of the blades, resulting in damage to the dynamic balance of the blades, which in turn causes equipment vibration. This vibration will not only reduce the exhaust efficiency, but may also cause the fixed connection components (such as bolts) between the smoke exhaust fan and the connecting pipe rack to loosen, affecting the stability and safety of the system.

[0003] In order to detect potential problems such as loose bolts, manual inspection or sensor monitoring is often used in the existing technology. Manual inspection relies on the experience of the operator and observes the tightening status of the bolts through regular inspections, but this method is inefficient, easily affected by human factors, and it is difficult to detect problems in real time. Although sensor monitoring can achieve automated detection, it usually requires complex electronic equipment and data processing systems, which are costly, and the reliability of the sensor may be limited in high temperature, high humidity or highly corrosive flue environments. In addition, the existing technology lacks a simple and reliable mechanical detection mechanism that can intuitively reflect the loose status of the bolts and adapt to the complex working conditions of the smoke exhaust system. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is that the prior art lacks a simple and reliable mechanical detection mechanism that can intuitively reflect the loosening state of the bolts and adapt to the complex working conditions of the smoke exhaust system.

[0005] The above technical problems are solved by the following technical solutions: The present invention proposes a fan detection mechanism, which includes a connecting pipe rack for connecting to the flue; a smoke exhaust fan is arranged in the connecting pipe rack and connected to the connecting pipe rack; a connecting member is arranged on the inner side of the connecting pipe rack and is rotatably connected to the connecting pipe rack, and the connecting member is fixedly connected to the blades of the smoke exhaust fan to enhance the rotational stability of the blades; a sliding assembly includes a rotating part and a sliding part, the rotating part is driven to rotate by the connecting member, and the sliding part is slidably arranged in the rotating part, and the sliding part and the rotating part are respectively provided with friction parts that cooperate with each other; a warning part includes a color display part and a warning block, the warning block is slidably arranged in the color display part, and is connected to the sliding part through a rope body, and the rope body is wrapped around the sliding part, and is used to drive the warning block to slide through the movement of the sliding part to indicate the status.

[0006] In a preferred embodiment of the fan detection mechanism of the present invention: the connecting piece is located inside the connecting pipe frame and is rotatably connected to the connecting pipe frame, and the connecting piece is fixed to the blades of the smoke exhaust fan to enhance the rotation stability of the blades.

[0007] In a preferred embodiment of the fan detection mechanism of the present invention: it also includes: a drive ring, which is located on one side of the connecting member and is rotatably connected to the connecting pipe rack, and the drive ring is connected to the connecting member through a one-way rotating member to limit the rotation direction of the drive ring; a gear set, including multiple gears, meshing with the tooth grooves on one side of the drive ring.

[0008] In a preferred embodiment of the fan detection mechanism of the present invention: the rotating part is coaxially fixed with the gear and rotates synchronously with the gear; the friction component includes a first friction disk fixed on the outside of the sliding part, and a second friction disk corresponding to the first friction disk is fixed inside the rotating part; a compression spring is fixed between the sliding part and the rotating part, pushing the first friction disk to contact the second friction disk to achieve power transmission.

[0009] In a preferred embodiment of the fan detection mechanism of the present invention: the sliding part includes a rod body and a winding part, the rod body is movably connected to the rotating part, the winding part is coaxially rotatably connected to the rod body, the rope body is wound around the winding part, and a damping layer is fixed at the connection between the winding part and the rod body; wherein, when the rope body is wound to the limit, the damping layer causes the winding part to idle relative to the rod body.

[0010] In a preferred embodiment of the fan detection mechanism of the present invention, a pressure plate is slidably disposed in the screw groove, the pressure plate abutting against the bolt, and a force spring is disposed in the screw groove, one end of the force spring abutting against the pressure plate and the other end being fixed in the screw groove; wherein, when the bolt is in a tightened state, the bolt presses the pressure plate, and the pressure plate pushes the sliding portion to separate the first friction disc from the second friction disc;

[0011] In a preferred embodiment of the fan detection mechanism of the present invention: a partition is rotatably connected to the winding part, and the partition is in contact with the pressure plate; wherein, when the partition rotates with the winding part, the friction force of the pressure plate on the winding part is reduced; the partition reduces the friction resistance of the pressure plate on the winding part, so that the winding part rotates more smoothly, reduces wear, and improves transmission efficiency and device durability.

[0012] In a preferred embodiment of the fan detection mechanism of the present invention, a return spring is provided within the color development unit, one end of the return spring abutting the warning block and the other end fixed within the color development unit. When the cable is loosened, the return spring pushes the warning block back to its initial position. The return spring ensures that the warning block automatically returns to its initial color state when the cable is loosened, facilitating the next detection. This simple structure and reliable return to normal operation improve detection repeatability and accuracy.

[0013] To solve the above technical problems, the present invention also provides the following technical solutions: a flue smoke exhaust device, comprising a fan detection mechanism, and a flue; a fixed connection part, the connecting pipe rack and the flue are connected through the fixed connection part, and a sealing ring is fixed at the fitting part of the fixed connection part.

[0014] In a preferred embodiment of the flue smoke exhaust device of the present invention: at least one raised sealing rib is provided on the outer peripheral surface of the sealing ring, and the sealing rib is embedded in the contact surface of the fixed connection part when the fixed connection part is connected, further enhancing the sealing effect between the connecting pipe rack and the flue.

[0015] The beneficial effect of this invention lies in the ability to intuitively indicate the looseness of a bolt through the synergistic effect of a sliding assembly and a warning element. The sliding assembly comprises a rotating portion and a sliding portion, which cooperate with friction components to transmit power. A cable drives the warning element to slide within the color display portion, providing status indication. This mechanism achieves highly reliable real-time detection through a purely mechanical structure, eliminating the need for complex electronic equipment. This overcomes the reliability limitations of traditional sensors in high-temperature, high-humidity, or highly corrosive environments.

[0016] A one-way rotating member limits the direction of rotation of the drive ring, while the meshing of the teeth and gears ensures efficient power transmission. The rotating part and gear are coaxially fixed, ensuring synchronous and stable rotation. This mechanism is unique in its ability to convert the counter-rotating motion of the smoke exhaust fan into driving force for the detection mechanism, eliminating interference from irrelevant motion and significantly improving detection accuracy and reliability.

[0017] The sliding part of the present invention includes a rod body and a winding part. A damping layer is provided at the connection between the winding part and the rod body. When the rope body is wound to the limit, the damping layer allows the winding part to rotate idly relative to the rod body, thereby preventing the rope body from breaking due to excessive stretching. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Among them:

[0019] Figure 1 It shows a front view schematic diagram of the connection pipe rack of the fan detection mechanism;

[0020] Figure 2 A partial perspective view of the sliding assembly of the fan detection mechanism is shown;

[0021] Figure 3 An exploded perspective view of the sliding assembly of the fan detection mechanism is shown;

[0022] Figure 4 A top view of the sliding assembly of the fan detection mechanism is shown;

[0023] Figure 5 Shows an overall stereoscopic view of the fan detection mechanism. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0025] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.

[0026] Reference Figure 1-3 , this embodiment provides a fan detection mechanism, including a connecting pipe rack 1 for connecting to the flue 7; a smoke exhaust fan 2, which is arranged in the connecting pipe rack 1 and connected to the connecting pipe rack 1; a connecting member 3, which is arranged on the inner side of the connecting pipe rack 1 and is rotatably connected to the connecting pipe rack 1, and the connecting member 3 is fixedly connected to the blade 21 of the smoke exhaust fan 2, so as to enhance the rotation stability of the blade 21; a sliding assembly 4, including a rotating part 41 and a sliding part 42, the rotating part 41 is driven to rotate by the connecting member 3, and the sliding part 42 is slidably arranged in the rotating part 41, and the sliding part 42 and the rotating part 41 are respectively provided with friction parts 43 that cooperate with each other; a warning member 5, including a color display part 51 and a warning block 52, the warning block 52 is slidably arranged in the color display part 51, and is connected to the sliding part 42 through a rope body 53, and the rope body 53 is wound around the sliding part 42, and is used to drive the warning block 52 to slide through the movement of the sliding part 42 to indicate the status.

[0027] In this embodiment, the connecting pipe rack 1 is a hollow frame structure, usually a cylindrical or rectangular pipe, which serves as a support and guide component of the device.

[0028] The connecting pipe rack 1 serves as the skeleton of the entire device and is fixedly connected to the external flue 7 to ensure the stable installation of internal components such as the smoke exhaust fan 2, the connecting piece 3 and the sliding assembly 4.

[0029] The smoke exhauster 2 is a power device with rotating blades 21 , which is installed inside the connecting pipe frame 1 , and the blades 21 are driven to rotate by a motor.

[0030] The blades 21 rotate at high speed around the central axis to generate airflow.

[0031] The smoke exhauster 2 drives the airflow through the rotation of the blades 21, and is responsible for exhausting the smoke through the connecting pipe frame 1. The blades 21 are fixedly connected to the connecting member 3, transmitting the rotational power to the connecting member 3 to ensure the stability of power transmission.

[0032] The connecting member 3 is a rigid component (such as a sleeve or a connecting plate) and is arranged inside the connecting pipe frame 1 and is rotatably connected to the pipe frame through a bearing or a similar structure.

[0033] It rotates synchronously with the rotation of the blades 21 of the smoke exhaust fan 2 and performs circular motion around the central axis of the pipe rack.

[0034] The connecting member 3 is fixedly connected to the blade 21 of the smoke exhaust fan 2 to enhance the rotation stability of the blade 21 and reduce vibration or deviation.

[0035] The sliding assembly 4 consists of a rotating part 41 and a sliding part 42 .

[0036] The rotating part 41 is a rotating body (such as a turntable or a drum) and receives power transmission from the connecting member 3 .

[0037] The sliding portion 42 is a component (such as a slider or a slide rod) that can slide in the rotating portion 41 and cooperates with the rotating portion 41 through a guide groove.

[0038] Friction component 43: The surfaces of the rotating part 41 and the sliding part 42 are respectively provided with friction structures that cooperate with each other.

[0039] The rotating portion 41 is driven by the connecting member 3 to rotate around the central axis.

[0040] The sliding portion 42 slides in a specific direction (eg, radial or axial) within the rotating portion 41 and is subjected to the friction force of the friction component 43 .

[0041] The warning member 5 includes a color display portion 51 and a warning block 52 .

[0042] The color display portion 51 is a transparent or translucent shell (such as a window or a dial) fixed inside the connecting pipe frame 1 .

[0043] The warning block 52 is an indicating component (such as a colored slider or pointer) that can slide within the color display portion 51 .

[0044] The rope body 53 is a flexible connecting member 3 , one end of which is fixed to the sliding portion 42 , and the other end of which is connected to the warning block 52 and is wound around the sliding portion 42 .

[0045] The warning block 52 slides linearly in the color developing portion 51 .

[0046] The rope 53 is pulled or loosened as the sliding portion 42 moves, driving the warning block 52 to slide.

[0047] The sliding position of the warning block 52 forms a visual indication in the color display portion 51, reflecting the movement state of the sliding portion 42. The rope 53 acts as a connecting medium, converting the movement of the sliding portion 42 into the displacement of the warning block 52, thereby achieving indirect transmission of the state.

[0048] refer to Figure 2-4 In one embodiment provided in the present application, the connector 3 is located inside the connecting pipe frame 1 and is rotationally connected to the connecting pipe frame 1. The connector 3 is fixed to the blades 21 of the smoke exhaust fan 2 to enhance the rotational stability of the blades 21. It also includes a drive ring 6, which is located on one side of the connector 3 and is rotationally connected to the connecting pipe frame 1. The drive ring 6 is connected to the connector 3 through a one-way rotating member 61 to limit the rotation direction of the drive ring 6; a gear set, including a plurality of gears 62, which mesh with the tooth grooves 63 on one side of the drive ring 6. The rotating part 41 is coaxially fixed with the gear 62 and rotates synchronously with the gear 62; the friction component 43 includes a first friction disc 431 fixed to the outside of the sliding part 42, and a second friction disc 432 corresponding to the first friction disc 431 is fixed inside the rotating part 41; a compression spring 44 is fixed between the sliding part 42 and the rotating part 41, pushing the first friction disc 431 to contact the second friction disc 432 to achieve power transmission.

[0049] In this embodiment, the connecting member 3 is a rigid component, which rotates in a circular motion around the central axis of the connecting pipe frame 1 , and the rotational power comes from the blades 21 of the smoke exhaust fan 2 .

[0050] The drive ring 6 is an annular member located on one side of the connector 3 and is rotatably connected to the connecting pipe frame 1 via a bearing or similar structure. A tooth groove 63 is provided on one side of the drive ring 6 for engaging with a gear 62.

[0051] It is connected to the connecting member 3 via a one-way rotating member 61 (such as a one-way bearing or a ratchet mechanism) and rotates around the central axis of the connecting pipe frame 1 in only one direction.

[0052] The drive ring 6 receives the rotational power of the connecting member 3, and the one-way rotating member 61 limits its rotation direction to ensure that the power is transmitted to the gear set in one direction. Its tooth groove 63 meshes with the gear 62 to transmit the rotational motion to the rotating part 41.

[0053] The outer edge of the gear 62 is provided with teeth that mesh with the tooth grooves 63 of the drive ring 6 .

[0054] The gears 62 rotate synchronously with the rotation of the driving ring 6 and perform circular motion around their respective central axes.

[0055] The gear 62 meshes with the tooth grooves 63 of the drive ring 6 through its teeth, transmitting the rotational motion of the drive ring 6 to the rotating part 41. The gear 62 is fixed coaxially with the rotating part 41 to ensure synchronous rotation of the rotating part 41 and form a stable power transmission path.

[0056] The rotating portion 41 is a rotating body (such as a turntable) and is coaxially fixed with the gear 62 in the gear set. A guide structure is provided inside to accommodate the sliding portion 42.

[0057] It rotates synchronously around the central axis with the rotation of gear 62.

[0058] The friction member 43 includes a first friction plate 431 and a second friction plate 432 .

[0059] The first friction disc 431 is fixed to the outside of the sliding portion 42 and is a disc-shaped structure with a surface made of a high friction coefficient material such as rubber or rough metal.

[0060] The second friction disc 432 is fixed inside the rotating part 41 and is arranged opposite to the first friction disc 431 . The surface material of the second friction disc 432 matches that of the first friction disc 431 .

[0061] The first friction disc 431 slides along with the sliding portion 42 in the rotating portion 41 , and the second friction disc 432 rotates along with the rotating portion 41 , and friction is generated by contact between the two.

[0062] The contact between the first friction disc 431 and the second friction disc 432 converts the rotational motion of the rotating portion 41 into the rotational motion of the sliding portion 42 , thereby achieving power transmission through friction.

[0063] The compression spring 44 is an elastic component fixed between the sliding portion 42 and the rotating portion 41 , and is typically a coil spring installed in the guide structure of the rotating portion 41 .

[0064] The compression spring 44 uses its elastic force to push the first friction plate 431 and the second friction plate 432 into close contact, thereby increasing the friction between the friction member 43 and ensuring the reliability of power transmission. The compression spring 44 cooperates with the sliding portion 42 and the rotating portion 41 to maintain the stable working state of the friction member 43.

[0065] refer to Figure 3-4As an optional embodiment, the sliding portion 42 includes a rod 421 and a winding portion 422. The rod 421 is movably connected to the rotating portion 41, and the winding portion 422 is coaxially rotatably connected to the rod 421. The rope 53 is wound around the winding portion 422. A damping layer 423 is fixed at the connection between the winding portion 422 and the rod 421. When the rope 53 is wound to the limit, the damping layer 423 causes the winding portion 422 to rotate idly relative to the rod 421. By providing the winding portion 422 and the damping layer 423 on the sliding portion 42, when the rope 53 is wound to the limit, the winding portion 422 rotates idly, preventing the rope 53 from breaking and protecting the transmission system. The damping layer 423 provides stable rotational resistance, ensuring that the relative movement of the winding portion 422 and the rod 421 is controllable, thereby extending the service life of the device.

[0066] In this embodiment, the sliding portion 42 is composed of a rod body 421 and a winding portion 422 .

[0067] Rod body 421: is a slender member (such as a cylindrical sliding rod or slider).

[0068] The winding portion 422 is a cylindrical or wheel-shaped component, which is coaxially arranged with the rod body 421 and is rotationally connected to the rod body 421 through a bearing or a similar structure.

[0069] The rod 421 receives the driving force from the rotating portion 41 and transmits the motion to the winding portion 422 through sliding and rotating. The winding portion 422 acts as a winding carrier for the rope 53, moving in conjunction with the rod 421 to provide support for the winding and release of the rope 53, and forming a motion transmission relationship with the warning member 5 through the rope 53.

[0070] The rope body 53 is a flexible component (such as a steel wire rope, a nylon rope or a fiber rope), one end of which is fixed to the winding portion 422 and the other end of which is connected to the warning member 5 and is wound around the outer surface of the winding portion 422 .

[0071] The rope 53 is wound or released as the winding portion 422 rotates, generating tension or a slack state, thereby driving the movement of the warning member 5 .

[0072] The rope body 53 serves as a medium for motion transmission, converting the rotational motion of the winding portion 422 into the linear sliding motion of the warning member 5 , and cooperates with the winding portion 422 of the sliding portion 42 and the warning block 52 of the warning member 5 .

[0073] The damping layer 423 is a high friction or viscous material layer (such as a rubber pad, a silicone layer or a damping oil film), fixed to the connection between the winding portion 422 and the rod body 421, and located between the contact surfaces thereof.

[0074] The damping layer 423 generates friction or viscous resistance when the winding portion 422 rotates relative to the rod 421, thereby regulating the relative rotation speed between the two. When the rope 53 is wound to the limit, the damping layer 423 allows the winding portion 422 to rotate idly relative to the rod 421.

[0075] The damping layer 423 controls the relative rotation between the winding portion 422 and the rod 421 through friction or viscosity, ensuring that the winding portion 422 rotates synchronously with the rod 421 during normal operation. When the rope 53 reaches its winding limit, it rotates idly to relieve excessive tension. The damping layer 423 cooperates with the sliding portion 42 and the rope 53 to maintain stable movement.

[0076] refer to Figure 1 and Figure 3-4 As an optional embodiment, a pressure plate 12 is slidably disposed within the screw groove 11 and abuts the bolt 15. A force spring is disposed within the screw groove 11, one end of the force spring abutting the pressure plate 12 and the other end fixed within the screw groove 11. When the bolt 15 is tightened, the bolt 15 presses against the pressure plate 12, which pushes the sliding portion 42 to separate the first friction disc 431 from the second friction disc 432. Due to the arrangement of the pressure plate 12 and the force spring, when the bolt 15 is not loose, the pressure plate 12 pushes the sliding portion 42 to separate the first friction disc 431 from the second friction disc 432, cutting off power transmission and avoiding false alarms of loose bolt 15. This rational structural design ensures the accuracy of the test results. A partition 13 is rotatably connected to the winding portion 422, and the partition 13 is in contact with the pressure plate 12; wherein, when the partition 13 rotates with the winding portion 422, the friction force of the pressure plate 12 on the winding portion 422 is reduced; the partition 13 reduces the friction resistance of the pressure plate 12 on the winding portion 422, so that the winding portion 422 rotates more smoothly, reduces wear, and improves transmission efficiency and device durability.

[0077] In this embodiment, the screw groove 11 is a channel provided on the connecting pipe frame 1 .

[0078] The pressing plate 12 is a plate-shaped member (such as a metal or hard plastic plate), which is slidably disposed in the screw groove 11 and directly abuts against the end of the bolt 15 .

[0079] The pressing plate 12 slides linearly along the guide surface in the screw groove 11 and is squeezed by the bolt 15 or pushed by the force spring.

[0080] The pressure plate 12 receives the axial thrust of the bolt 15 by abutting against the bolt 15 , and contacts the sliding portion 42 by sliding, transmitting the force to the sliding portion 42 , affecting the contact state between the first friction disk 431 and the second friction disk 432 .

[0081] The force spring is an elastic component (such as a helical compression spring 44 ), one end of which is fixed to the bottom of the screw groove 11 and the other end of which is in contact with the pressure plate 12 .

[0082] The force spring is compressed or released when the pressing plate 12 slides, generating elastic force to push the pressing plate 12 to move along the sliding direction of the screw groove 11 .

[0083] The bolt 15 is a standard fastener (such as a hexagonal bolt 15 or a hexagon socket bolt 15 ), which is installed in the fixing structure corresponding to the screw groove 11 , and the end portion directly abuts against the pressure plate 12 .

[0084] The bolt 15 is tightened or loosened by rotating. When tightened, the bolt 15 presses the pressing plate 12 in the axial direction, and when loosened, the bolt 15 reduces the thrust on the pressing plate 12.

[0085] The bolt 15 drives the pressing plate 12 to slide in the screw groove 11 by axial compression, thereby pushing the sliding portion 42 to move, thereby changing the contact state between the first friction disk 431 and the second friction disk 432 .

[0086] The sliding portion 42 is disposed inside the rotating portion 41 and is fixed with a first friction disk 431 .

[0087] The first friction disc 431 is a disc-shaped component fixed to the outside of the sliding portion 42 , and its surface is made of a material with a high friction coefficient.

[0088] The second friction disc 432 is fixed inside the rotating part 41 and is arranged opposite to the first friction disc 431 . The surface material of the second friction disc 432 matches that of the first friction disc 431 .

[0089] The partition plate 13 is a thin plate-shaped component (such as a metal or low-friction material plate), which is rotatably connected to the winding portion 422 through a bearing or similar structure and contacts the surface of the pressure plate 12.

[0090] The partition plate 13 rotates synchronously around its axis with the rotation of the winding portion 422 while maintaining contact with the pressing plate 12.

[0091] The partition 13 serves as a contact interface between the winding portion 422 and the pressing plate 12, reducing direct friction therebetween and lowering resistance during rotation of the winding portion 422. The partition 13 cooperates with the winding portion 422 and the pressing plate 12 to ensure smooth rotation of the winding portion 422.

[0092] refer to Figure 4 As an optional embodiment, a return spring is provided within the coloring portion 51. One end of the return spring abuts against the warning block 52, while the other end is fixed within the coloring portion 51. When the rope 53 slackens, the return spring pushes the warning block 52 back to its initial position. The return spring ensures that the warning block 52 automatically returns to its initial position when the rope 53 slackens, restoring the coloring portion 51 to its initial color state and facilitating the next test. This simple structure and reliable return to normal operation improve the repeatability and accuracy of detection.

[0093] In summary, the smoke exhaust component is connected to the flue 7 to increase the smoke exhaust effect of the flue.

[0094] The smoke exhaust component includes a connecting pipe frame 1 and a smoke exhaust machine 2 installed inside the connecting pipe frame 1. When the smoke exhaust machine 2 is started, the smoke exhaust speed of the flue can be accelerated.

[0095] After long-term use, impurities adhere to the blades 21 of the smoke exhaust fan 2, affecting the dynamic balance, causing it to vibrate during operation. The connecting pipe frame 1 and the smoke exhaust fan 2 are connected by bolts 15, so long-term vibration will cause the bolts 15 to loosen.

[0096] When it is necessary to check whether the bolt 15 is loose, the user only needs to control the smoke exhaust fan 2 to rotate in the opposite direction, so that the blade 21 drives the connecting member 3 to rotate. At this time, the connecting member 3 drives the driving ring 6 to rotate through the one-way rotating member 61. A tooth groove 63 is provided on one side of the driving ring 6. The tooth groove 63 is engaged with a plurality of gears 62. A rotating part 41 is coaxially fixed to one side of the gear 62. The rotating part 41 is internally slidably connected to the sliding part 42. The first friction disk 431 is fixed on the outside of the sliding part 42. The rotating part 41 is internally fixed with a second friction disk 431 corresponding to the first friction disk 431. 2. A compression spring 44 is fixed between the sliding portion 42 and the rotating portion 41. Therefore, under the push of the compression spring 44, the rotating portion 41 drives the first friction disk 431 and the second friction disk 432 to contact and achieve connection. Therefore, the rotating portion 41 can synchronously drive the sliding portion 42 to rotate. A rope 53 is wrapped around the sliding portion 42. By contracting the rope 53, the rope 53 will pull the warning block 52 away from the color-displaying portion 51, so the color of the color-displaying portion 51 changes. The staff can determine whether the bolt 15 at that location is loose by observing whether the color of the color-displaying portion 51 changes.

[0097] Reference Figure 1 and Figure 5 This embodiment provides a flue smoke exhaust device, including a flue 7, a connecting pipe rack 1 and the flue 7 are connected by a fixed connection part 8, and a sealing ring is fixed at the joint of the fixed connection part 8; wherein, the sealing ring provides a sealing effect when the fixed connection part 8 is connected; the sealing ring ensures the airtightness between the connecting pipe rack 1 and the flue 7, prevents smoke leakage, improves the smoke exhaust efficiency of the smoke exhaust component, and enhances the overall safety of the system.

[0098] In this embodiment, the connecting pipe rack 1 and the flue 7 are fixedly connected via a fixed connection portion 8. The fixed connection portion 8 is a standardized connecting component, typically a round or square metal plate, which is fixed to the ends of the connecting pipe rack 1 and the flue 7, respectively. The two fixed connection portions 8 are aligned and locked using bolts 15 or nuts.

[0099] The fixed connection part 8 has a flat contact surface with high surface processing precision, ensuring that the two fixed connection parts 8 can fit tightly together.

[0100] During the installation process, the fixed connection part 8 is gradually tightened by the bolts 15 to achieve a static fixed connection, and the movement is limited to the alignment and locking actions during installation.

[0101] The fixed connection 8 ensures the mechanical stability of the connecting pipe rack 1 and the flue 7, providing a reliable physical basis for subsequent sealing. It cooperates with the connecting pipe rack 1 to transfer the flue gas to the flue 7; and cooperates with the downstream flue 7 to ensure that the flue gas enters the exhaust system smoothly.

[0102] A sealing ring is provided as a sealing component at the joint of the fixed connection part 8. The sealing ring is usually an annular elastic material (such as rubber, silicone or metal composite material), embedded in a preset groove between the joint surfaces of the fixed connection part 8 or directly pressed against the joint surface.

[0103] The sealing ring has a certain thickness and elasticity, and can be divided into a circular sealing ring, a rectangular sealing ring or a customized shape sealing ring according to the shape of the fitting surface of the fixed connection part 8 to adapt to different designs of the fixed connection part 8.

[0104] When the fixed connection part 8 is locked, the sealing ring is compressed and slightly deformed, filling the small gap between the contact surfaces of the fixed connection part 8, forming a static sealing state without independent movement.

[0105] The sealing ring elastically deforms to tightly adhere to the surface of the fixed connection 8, preventing smoke leakage from the connection. It works together with the fixed connection 8 to ensure airtightness between the connecting pipe rack 1 and the flue 7. It also works with the upstream connecting pipe rack 1 and the downstream flue 7 to maintain the integrity of the smoke transmission path.

[0106] As an optional embodiment, at least one raised sealing rib is provided on the outer peripheral surface of the sealing ring, and the sealing rib is embedded in the contact surface of the fixed connection part 8 when the fixed connection part 8 is connected, thereby further enhancing the sealing effect between the connecting pipe rack 1 and the flue 7.

[0107] Finally, it should be pointed out that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. A fan detection mechanism, characterized in that: include, Connecting pipe rack (1); A smoke exhaust fan (2) is arranged inside the connecting pipe frame (1); A connecting piece (3) is provided on the inner side of the connecting pipe frame (1), and the connecting piece (3) is connected to the blades (21) on the smoke exhaust machine (2); The sliding assembly (4) includes a rotating portion (41) and a sliding portion (42), wherein the rotating portion (41) is driven by the connecting member (3) to rotate, and one end of the sliding portion (42) is movably disposed in the rotating portion (41), and the sliding portion (42) and the rotating portion (41) are respectively provided with friction components (43) that cooperate with each other; The warning member (5) comprises a color display portion (51) and a warning block (52). The warning block (52) is slidably arranged in the color display portion (51) and connected to the sliding portion (42) via a rope (53). The warning block (52) is driven to slide by the movement of the sliding portion (42) to indicate a status.

2. The fan detection mechanism according to claim 1, characterized in that: The connecting piece (3) is rotatably connected to the connecting pipe rack (1).

3. The fan detection mechanism according to claim 2, characterized in that: It also includes a driving ring (6), the driving ring (6) is rotatably connected to the connecting pipe frame (1), and the driving ring (6) is connected to the connecting member (3) via a one-way rotating member (61) to limit the rotation direction of the driving ring (6); The gear set includes a plurality of gears (62), wherein the gears (62) are engaged with the tooth grooves (63) on one side of the driving ring (6).

4. The fan detection mechanism according to claim 3, characterized in that: The rotating part (41) is fixed coaxially with the gear (62) and rotates synchronously with the gear (62); The friction component (43) includes a first friction disc (431) arranged outside the sliding portion (42), and a second friction disc (432) corresponding to the first friction disc (431) is fixed inside the rotating portion (41); The compression spring (44) is fixed between the sliding portion (42) and the rotating portion (41).

5. The fan detection mechanism according to claim 4, characterized in that: The sliding portion (42) comprises a rod body (421) and a winding portion (422); the rod body (421) is movably connected to the rotating portion (41); the winding portion (422) is coaxially rotatably connected to the rod body (421); the rope body (53) is wound around the winding portion (422); and a damping layer (423) is fixed at the connection between the winding portion (422) and the rod body (421).

6. The fan detection mechanism according to claim 5, characterized in that: A plurality of screw grooves (11) are provided on the outside of the connecting pipe frame (1), a pressure plate (12) is slidably provided in the screw groove (11), the pressure plate (12) abuts against the bolts (15) connected inside the screw groove (11), a force spring is provided in the screw groove (11), one end of the force spring abuts against the pressure plate (12).

7. The fan detection mechanism according to claim 6, characterized in that: A partition (13) is rotatably connected to the winding portion (422), and the partition (13) is in contact with the pressing plate (12).

8. The fan detection mechanism according to claim 7, characterized in that: A return spring is provided in the color developing portion (51), one end of the return spring abuts against the warning block (52), and the other end is fixed in the color developing portion (51).

9. A flue smoke exhaust device, characterized in that: A fan detection mechanism comprising any one of claims 1 to 8, and Flue (7); A fixed connection part (8), wherein the connecting pipe rack (1) and the flue (7) are connected via the fixed connection part (8).

10. The flue smoke exhaust device according to claim 9, characterized in that: A sealing ring is fixed at the fitting position of the fixed connection part (8), and at least one raised sealing rib is provided on the outer peripheral surface of the sealing ring. The sealing rib is embedded in the contact surface of the fixed connection part (8) when the fixed connection part (8) is connected.

Images