Exhaust duct system and laundry room

Abstract

The utility model discloses an exhaust duct system and a laundry room, and relates to the technical field of buildings. The main pipeline is provided with a first extending direction for air flowing, and a first opening is formed in the end, away from the first extending direction, of the main pipeline. The blind plate is connected to the first opening of the main pipeline in an overall detachable mode, the blind plate and the main pipeline are connected through quick-release structures, and the multiple quick-release structures are distributed in the circumferential direction of the blind plate at intervals. According to the exhaust pipeline system, the cleaning work of the interior of the main pipeline is greatly facilitated. A worker can quickly dismantle the blind plate without complex operation, and enters a main pipeline to check, clean accumulated dust, maintain damaged parts and the like. And a plurality of quick disassembly structures are arranged around the blind plate at intervals in the circumferential direction, so that quick disassembly of the blind plate is ensured, when the blind plate is reinstalled, a plurality of connecting points are also convenient to align accurately, and the installation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of building technology, specifically to an exhaust duct system and a laundry room. Background Technology

[0002] In the exhaust duct system from the dryer to the lint collector in the laundry room, the exhaust duct needs to be cleaned regularly to prevent excessive lint buildup in the duct and thus fire.

[0003] Currently, manholes on exhaust ducts are typically connected to the ductwork with bolts. Once the manhole is opened, workers can enter the ductwork for manual cleaning. After cleaning, to ensure the normal operation and airtightness of the exhaust duct, the manhole and ductwork need to be sealed. Generally, packing seals are used to achieve this.

[0004] However, the existing manhole design has certain drawbacks. Due to the use of bolted connections to the air ducts and packing seals, the opening and closing procedures of the manholes are rather cumbersome and inconvenient in actual operation, which to some extent affects the efficiency of cleaning and maintaining the exhaust ducts. Utility Model Content

[0005] In view of this, the present invention provides an exhaust duct system and a laundry room to solve the problem of cumbersome operation of opening and closing manhole doors during the current exhaust duct cleaning process.

[0006] In a first aspect, this utility model provides an exhaust duct system, comprising:

[0007] A main duct having a first extending direction for airflow, the main duct having a first opening at an end away from the first extending direction;

[0008] A blind flange is detachably connected to the first opening of the main pipe. The blind flange is connected to the main pipe via a quick-release structure, which has multiple quick-release structures spaced circumferentially around the blind flange.

[0009] This utility model's technical solution has the following advantages: the blind flange is entirely detachable and connected to the first opening of the main pipeline via a quick-release structure, which greatly facilitates the cleaning work inside the main pipeline. Workers can quickly remove the blind flange without complicated operations, allowing them to enter the main pipeline for inspection, cleaning of accumulated dust, and repair of damaged parts. Multiple quick-release structures spaced circumferentially around the blind flange ensure the orderly removal process, avoiding maintenance work being hindered by difficulties in removing a single connection point. Simultaneously, when reinstalling the blind flange, multiple connection points facilitate accurate alignment, improving installation efficiency.

[0010] The blind flange features a fully detachable design, with multiple quick-release structures spaced around its circumference, allowing for relatively uniform pressure to be applied after installation. This uniform pressure distribution ensures a tight seal between the blind flange and the first opening of the main duct, effectively preventing air leakage from the interface during exhaust.

[0011] Optionally, the quick-release structure includes a push-button latch and a hook that engages with the push-button latch.

[0012] In the above solution, the push-button latch and hook fitting make the connection between the blind flange and the main pipeline extremely simple. When installing the blind flange, simply connect the push-button latch to the hook fitting and press down on the latch to quickly lock it in place. Similarly, when removing the blind flange, simply operate the push-button latch to quickly disengage from the hook fitting, enabling rapid removal of the blind flange. Compared to traditional bolt and nut connections, there is no need to use wrenches or other tools to tighten each bolt individually, significantly saving operation time and improving work efficiency.

[0013] Optionally, the push-button latch includes: a base, a push-button rotatably connected to the base via a first pivot, a connector rotatably connected to the push-button via a second pivot, and the distal end of the connector being used to connect to the hook.

[0014] In the above solution, the push-button latch is designed based on the lever principle. The operator only needs to apply downward pressure to the pressing component. The rotation of the first pivot causes the pressing component to rotate the connecting component around the second pivot, thus quickly locking the distal end of the connecting component with the hook. This operation method is ergonomic, requiring only a simple hand pressing action, without complex skills or additional tools, and can be easily operated even in environments with limited space. For example, when maintaining blind flanges of exhaust ducts in narrow equipment compartments, workers can easily operate the push-button latch. Since the operation of the push-button latch mainly relies on the action of the pressing component, in some situations, the operator can operate it with one hand, which is very advantageous in scenarios where other tools or equipment need to be held simultaneously. For example, when maintenance personnel need to hold a lighting device in one hand and operate the latch to remove the blind flange with the other, the one-handed operation of the push-button latch demonstrates great convenience.

[0015] Optionally, the pressing member has a first rotational direction on the base that brings the connecting member closer to the hook, and a second rotational direction that moves the connecting member away from the hook;

[0016] After the pressing member rotates in the first rotation direction, the first rotating shaft is located on the side of the second rotating shaft away from the base, and after the pressing member rotates in the second rotation direction, the first rotating shaft is located on the side of the second rotating shaft closer to the base.

[0017] In the above scheme, after the pressing component rotates in the second rotation direction, the first rotating shaft is located on the side of the second rotating shaft closer to the base. This positional relationship forms a self-locking mechanism. During the operation of the exhaust duct system, when the blind flange is subjected to external forces such as airflow pressure and vibration, this self-locking structure can make the connection between the connector and the hook more stable, and it is not easy for the connector to accidentally detach from the hook due to external forces.

[0018] Optionally, the second rotating shaft has a mounting hole for inserting the connector. One end of the connector for inserting into the mounting hole has an external thread structure. After the connector is inserted into the mounting hole, adjusting nuts are connected to both ends of the mounting hole through the external thread structure. The adjusting nuts are used to adjust the depth of the connector inserted into the mounting hole.

[0019] In the above scheme, adjusting nuts are installed at both ends of the mounting hole on the second rotating shaft to precisely adjust the insertion depth of the connector into the mounting hole. In actual production and installation, components such as the blind flange, main pipe, and hooks may have certain dimensional differences. The adjusting nut design allows for adjustable insertion depth of the connector, thus accommodating these different dimensional conditions. Properly adjusting the insertion depth of the connector into the mounting hole optimizes the force distribution of the latch during operation. When the insertion depth is appropriate, the latch can more evenly distribute the forces (tension, pressure, and vibration) between the blind flange and the main pipe, avoiding damage caused by excessive localized stress. The adjusting nut firmly fixes the connector in the mounting hole, and by adjusting the insertion depth, the connection between the connector and the hook is made tighter, effectively preventing the connector from loosening and falling out of the mounting hole due to vibration, airflow impact, or other factors during the operation of the exhaust duct system. This ensures the reliability of the connection between the blind flange and the main pipe, avoids leakage problems, and ensures the normal operation of the exhaust system. During the use of the locking mechanism, if the connector or second rotating shaft shows wear or damage, it needs to be repaired or replaced. Since the connector is connected to the second rotating shaft via an external thread structure and an adjusting nut, disassembly and installation are relatively simple. Simply unscrew the adjusting nut to easily remove the connector for repair or replacement, reducing maintenance costs and difficulty and improving the maintainability of the entire exhaust duct system. During long-term operation of the exhaust duct system, the connection between the blind flange and the main duct may change due to temperature variations, duct deformation, and other factors. In this case, the depth of the connector insertion into the mounting hole can be readjusted using the adjusting nut to dynamically adjust the locking mechanism's connection status, ensuring it always maintains good working performance without requiring large-scale replacement or modification of the entire locking structure.

[0020] Optionally, the connector is a U-shaped component, and both ends of the U-shaped component have the external thread structure.

[0021] In the above scheme, the connector adopts a U-shaped part with external threads at both ends, meaning that both ends of the second rotating shaft have mounting holes, and can be tightened by adjusting nuts. This double-sided tightening method, compared to single-sided tightening, can apply pressure to the U-shaped part more evenly, making it more firmly fixed in the mounting holes. During the operation of the exhaust duct system, when subjected to external forces such as airflow impact and duct vibration, both ends of the U-shaped part are subjected to force simultaneously, effectively preventing it from coming out of the mounting holes or shaking, thereby ensuring the stability of the connection between the blind flange and the main duct and ensuring the reliable operation of the exhaust system. The structural characteristics of the U-shaped part allow it to more effectively disperse the force from the blind flange and the main duct during the connection process. Since the U-shaped part spans a certain space, when the blind flange is subjected to external force, the U-shaped part can distribute the force to the connection points between its two ends and the second rotating shaft, avoiding excessive local stress. This not only improves the stability of the connection, but also extends the service life of components such as the second rotating shaft, the U-shaped part, and the adjusting nuts, reducing the risk of damage caused by uneven stress.

[0022] Optionally, the blind flange has a sealing groove on the side facing the main pipe, and a sealing element is provided in the sealing groove; the opening of the main pipe has an extension extending outward along the axial direction, and the extension end of the extension has a support extending radially, the support being embedded in the sealing groove.

[0023] In the above design, the sealing groove on the blind flange cooperates with the support portion of the extension at the main duct opening. The support portion is embedded in the sealing groove, tightly pressing the seal between them. This close-fitting structure effectively fills the gap between the blind flange and the main duct, preventing exhaust leakage at the connection. The sealing groove provides a stable installation position for the seal, preventing displacement during installation or use. Simultaneously, the presence of the sealing groove allows the seal to better maintain its sealing state under airflow pressure. When airflow in the exhaust duct impacts the connection between the blind flange and the main duct, the seal, constrained by the groove, can more effectively resist airflow pressure and maintain good sealing performance. The extension and support portion of the main duct opening not only provide a sealing fit but also offer additional support and positioning for the blind flange. The extension extends axially outward, increasing the contact area between the main duct and the blind flange, making the blind flange more stable after installation. The support portion embedded in the sealing groove further restricts the radial movement of the blind flange, ensuring that it does not shake or shift during exhaust duct operation. The structure of the support embedded in the sealing groove helps to distribute the force borne by the blind flange over a larger area. When there is pressure in the exhaust duct, the pressure on the blind flange is transferred to the extension of the main duct through the contact between the sealing groove and the support, avoiding localized stress concentration. This not only helps to extend the service life of the blind flange and the main duct, but also ensures that the entire connection structure remains stable under long-term pressure. The design of the sealing groove and support makes the installation process of the blind flange and the main duct more intuitive and convenient. Installers only need to align the support of the main duct opening with the sealing groove on the blind flange, and then push the blind flange into place to complete the initial installation positioning. This design reduces the requirement for precise alignment during installation, lowers the installation difficulty, and improves installation efficiency. This structure also provides convenience when maintenance or replacement of the blind flange or seals is required. Since the seals are located in the sealing groove, they can be directly inspected, cleaned, or replaced after removing the blind flange. At the same time, the structure of the extension of the main duct and the support is relatively simple, and complex disassembly and assembly problems are less likely to occur during maintenance.

[0024] Optionally, a number of branch pipes are connected to the side wall of the main pipe, and the branch pipes are used to connect to the dryer.

[0025] In the above scheme, several branch pipes are connected to the side wall of the main duct to connect to the dryers. The hot and humid air generated by the dryers during operation is connected to the exhaust system through these branch pipes, ensuring timely and effective discharge of this air and facilitating the smooth heat exchange process within the dryers, thus improving drying efficiency. The connection design between the main duct and the branch pipes helps to balance airflow distribution throughout the exhaust system. When multiple dryers operate simultaneously, the rational layout of the branch and main ducts ensures that the airflow discharged from each dryer is evenly distributed into the main duct, preventing excessive or insufficient local airflow pressure and ensuring stable operation of the exhaust system. Connecting the dryers to a unified exhaust duct system makes maintenance more centralized and convenient. Maintenance personnel only need to periodically inspect and maintain the exhaust system composed of the main and branch pipes, eliminating the need for separate maintenance of the exhaust devices for each dryer, thus reducing maintenance workload and costs.

[0026] Optionally, the branch pipe is connected to the outlet of the dryer via a flexible hose.

[0027] In the above solution, the branch pipe is connected to the dryer outlet via a flexible hose, greatly increasing installation flexibility. The dryer does not need to be precisely aligned with the branch pipe during installation, as the hose can bend and deform within a certain range. Compared to rigid connections, flexible hose connections are much simpler to install. Installers only need to slip one end of the hose over the dryer outlet and connect the other end to the branch pipe, without the need for complex tools or precise alignment. This is particularly advantageous in situations with limited installation space or varying skill levels among installers, reducing installation difficulty and improving efficiency. The dryer generates vibrations during operation. With a rigid connection, these vibrations would be directly transmitted to the branch and main pipes, potentially causing resonance in the piping system, generating more noise, and affecting the pipe's lifespan. The flexible hose, with its excellent flexibility, effectively buffers the dryer's vibrations, reducing their transmission to the piping system. Because the hose absorbs and disperses the vibration energy generated during dryer operation, it reduces pipe friction and collision noise caused by vibration. This not only improves the acoustic conditions of the working environment but, for commercial locations (such as hotel laundries), also prevents noise problems from negatively impacting the customer experience. During the drying process, the dryer and its connected pipes will expand and contract due to temperature changes. Flexible hoses, with their elasticity, can compensate for changes in pipe length and position caused by thermal expansion and contraction. Besides thermal expansion and contraction, slight shaking of the dryer during operation and building settlement can also cause minor displacement between the dryer and branch pipes. The flexibility of the flexible hose can easily handle these minor displacements, maintaining a good connection and ensuring the normal operation of the exhaust system. When the dryer needs inspection or maintenance, the detachable nature of the flexible hose connection allows for easy separation of the dryer from the exhaust system. Maintenance personnel can move and operate the dryer more freely without worrying about damaging or affecting the exhaust ducts. If the hose ages or breaks, replacement is relatively simple. Simply remove the damaged hose from the dryer outlet and branch pipes, and replace it with a new hose. Compared to replacing rigid pipe connections, this eliminates the need for complex cutting, welding, or threaded connection operations, reducing maintenance costs and time.

[0028] Optionally, the branch pipe is inclined to the side wall of the main pipe toward a side away from the first extension direction.

[0029] In the above scheme, the branch pipes are inclined towards the side furthest from the first extension direction of the main pipe. This allows the airflow exiting the dryer and entering the branch pipe to merge with the airflow in the main pipe at a more reasonable angle when it merges into the main pipe. This inclined connection helps reduce collisions and turbulence between airflows, allowing the airflow to flow more smoothly within the main pipe. For example, in a system with multiple dryers connected to the main exhaust duct, if the branch pipes are connected vertically, the airflow exiting each dryer may collide with each other within the main pipe, creating turbulence. The inclined connection effectively avoids this, ensuring a stable and orderly airflow throughout the entire exhaust system. The inclined connection also reduces local resistance at the connection point between the branch pipe and the main pipe. When the airflow enters the main pipe from the branch pipe, the inclined angle provides a smoother transition. Compared to right-angle connections, the airflow does not need to change direction abruptly, thus reducing energy loss and resistance caused by sudden changes in direction. This helps improve the overall efficiency of the exhaust system, allowing more air to be discharged with the same fan power, or reducing fan energy consumption while achieving the same exhaust effect.

[0030] Optionally, the angle between the sidewall of the branch pipe and the sidewall of the main pipe is 30°-45°.

[0031] In the above scheme, the angle between the sidewall of the branch pipe and the main pipe is between 30° and 45°, providing a relatively ideal entry angle for the airflow entering the main pipe from the branch pipe. Within this angle range, the airflow discharged from the branch pipe can merge with the mainstream airflow in the main pipe in a relatively gentle manner, effectively reducing airflow collision and turbulence. For example, when the dryer discharges hot and humid air through the branch pipe, this angle allows the airflow to smoothly integrate into the airflow in the main pipe, like a tributary flowing into a large river, without causing excessive fluctuations, ensuring stable airflow throughout the entire exhaust system and improving exhaust efficiency. Compared to angles that are too large or too small, an angle of 30°-45° can significantly reduce the local resistance of the airflow at the connection point. Airflow entering the main pipe at this angle does not need to change direction drastically, reducing energy loss caused by sudden changes in direction. According to fluid mechanics principles, lower resistance means that a larger exhaust volume can be achieved with the same fan power, or the fan energy consumption can be reduced while achieving the same exhaust effect, thereby saving energy costs. For example, in the exhaust system of a large industrial drying plant, numerous branch pipes connect to the main pipe at this angle, resulting in considerable energy savings over long-term operation. Angles of 30°-45° are relatively easy to achieve during actual construction and installation. Compared to some overly specific or difficult-to-control angles, this range of angles has relatively lower requirements for construction techniques, allowing installers to easily cut, connect, and fix the pipes. This angle range also offers reasonable space utilization. It avoids the situation where the branch pipes are too close to the main pipe due to an excessively small angle, leading to narrow connection spaces that hinder later maintenance and inspection; nor does it cause the branch pipes to extend excessively in the space, occupying too much horizontal or vertical space. In space-constrained building environments, such as basement drying rooms, a reasonable angle allows for an efficient layout of the exhaust duct system within a limited space.

[0032] Secondly, this utility model also provides a laundry room, including: the exhaust duct system described in any of the above solutions.

[0033] The technical solution for the laundry room of this utility model has all the advantages of the aforementioned exhaust duct system because it adopts the exhaust duct system described above. Attached Figure Description

[0034] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1This is a top view of an exhaust duct system according to an embodiment of the present utility model;

[0036] Figure 2 for Figure 1 An enlarged view of the main pipe at the blind flange;

[0037] Figure 3 for Figure 2 A 3D view of the center blind flange;

[0038] Figure 4 for Figure 2 Enlarged view of region A in the middle;

[0039] Figure 5 for Figure 4 Top view.

[0040] Figure 6 for Figure 1 The main view.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Main pipe; 2. Blind flange; 3. Press-lock; 4. Hook; 5. Base; 6. Pressing element; 7. First pivot; 8. Connector; 9. Second pivot; 10. External thread structure; 11. Adjusting nut; 12. Sealing groove; 13. Extension; 14. Support; 15. Branch pipe; 16. Dryer; 17. Lint collector. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0044] like Figures 1-3 As shown, this is a specific implementation of the exhaust duct system provided in this embodiment, including: a main duct 1, the main duct 1 having a first extending direction for air flow, the main duct 1 having a first opening at one end away from the first extending direction; a blind plate 2 is integrally and detachably connected to the first opening of the main duct 1, the blind plate 2 being connected to the main duct 1 by a quick-release structure, the quick-release structure having a plurality of circumferentially spaced structures surrounding the blind plate 2.

[0045] Specifically, the quick-release structure includes all quick-release structures other than bolt connections, such as: press-type latch 3, clamp, pin, buckle, etc.

[0046] It should be noted that the first extension direction refers to the direction of the arrow shown on the main pipe 1 in the figure.

[0047] The exhaust duct system provided in this embodiment features a fully detachable blind flange 2 connected to the first opening of the main duct 1 via a quick-release structure. This greatly facilitates the cleaning of the interior of the main duct 1. Workers can quickly remove the blind flange 2 without complex operations, allowing them to enter the main duct 1 for inspection, cleaning of accumulated dust, and repair of damaged parts. Multiple quick-release structures spaced circumferentially around the blind flange 2 ensure the orderly removal process, preventing maintenance work from being hindered by difficulties in removing a single connection point. Simultaneously, multiple connection points facilitate accurate alignment during reinstallation of the blind flange 2, improving installation efficiency. The fully detachable design of the blind flange 2, combined with the multiple quick-release structures spaced circumferentially around it, allows for the application of relatively uniform pressure to the blind flange 2 after installation. This uniform pressure distribution ensures a tight fit between the blind flange 2 and the first opening of the main duct 1, effectively preventing air leakage from the interface during exhaust.

[0048] like Figure 2 As shown in this embodiment, the blind plate 2 is provided with a handle on its outside, providing an easy gripping point for the operator. When it is necessary to install or remove the blind plate 2, the operator can easily grasp the handle to better control the movement of the blind plate 2.

[0049] like Figure 4 , Figure 5 As shown, in the exhaust duct system provided in this embodiment, the quick-release structure includes a push-button latch 3 and a hook 4 that cooperates with the push-button latch 3. Both the push-button latch 3 and the hook 4 can be made of stainless steel, possessing good toughness and resistance to deformation. One end of the hook 4 is bent into a hook shape to cooperate with the latch tongue of the push-button latch 3, and the other end is welded to the edge of the first opening of the main duct 1. The position of the hook 4 corresponds one-to-one with that of the push-button latch 3, ensuring accurate engagement. Furthermore, in some alternative embodiments, the installation positions of the push-button latch 3 and the hook 4 can be interchanged.

[0050] like Figure 4 , Figure 5As shown, the push-button latch 3 consists of the following parts: a base 5, on which a push-button 6 is rotatably connected via a first pivot 7; and a connector 8 is rotatably connected to the push-button 6 via a second pivot 9, the distal end of which is used to connect to the hook 4. With this configuration, when connecting the connector 8 to the hook, the operator lifts the push-button 6, causing the connector 8 to move closer to the hook 4 and connect thereto. During locking, the operator only needs to apply downward pressure to the push-button 6. At this time, the rotation of the first pivot 7 causes the push-button 6 to rotate around the second pivot 9, thus quickly locking the distal end of the connector 8 to the hook 4. After locking the connector 8 to the hook 4, the push-button 6 can be locked with a lock head to prevent accidental unlocking caused by lifting the push-button 6. Of course, the above description is not limiting; in some alternative embodiments, the lock head can be omitted.

[0051] like Figure 4 As shown, in this embodiment, the pressing member 6 has a locking portion extending towards the base 5, and a locking member is connected to the base 5 for engaging with the locking portion. When the pressing member 6 is pressed down, the locking portion engages with the locking member, thereby forming a reliable secondary locking mechanism to prevent the pressing member 6 from easily popping open during use. Specifically, in this embodiment, the locking member is movably connected to the base 5, and secondary locking is performed manually. For example, the locking member can be rotatably mounted on the base 5, or it can be slidably connected to the base 5. In addition, in some alternative embodiments, the locking member can also be fixedly connected to the base 5, and then engage with the locking portion of the pressing member 6 through a spring-loaded snap-fit ​​structure or a magnetic adsorption structure.

[0052] like Figure 4 , Figure 5 As shown, in this embodiment, the pressing member 6 has two rotation directions on the base 5. One is the first rotation direction (clockwise in the figure), which causes the connecting member 8 to move closer to the hook member 4 when the pressing member 6 rotates in this direction. The other is the second rotation direction (counterclockwise in the figure), which causes the connecting member 8 to move away from the hook member 4 when rotated in this direction. When the pressing member 6 rotates in the first rotation direction, the first rotating shaft 7 will be on the side of the second rotating shaft 9 away from the base 5; while when the pressing member 6 rotates in the second rotation direction, the first rotating shaft 7 will be on the side of the second rotating shaft 9 closer to the base 5.

[0053] With the above configuration, after the pressing member 6 rotates in the second rotation direction, the second rotating shaft 9 is located on the side of the first rotating shaft 7 closer to the base 5. This positional relationship forms a self-locking mechanism. During the operation of the exhaust duct system, when the blind plate 2 is subjected to external forces such as airflow pressure and vibration, this self-locking structure makes the connection between the connector 8 and the hook 4 more stable, and it is not easy for the connector 8 to accidentally detach from the hook 4 due to external forces.

[0054] It should be noted that the second rotating shaft 9 is located on the side of the first rotating shaft 7 closer to the base 5, meaning that at this time, the second rotating shaft 9 is closer to the base 5 than the first rotating shaft 7.

[0055] like Figure 4 , Figure 5 As shown, in this embodiment, the second rotating shaft 9 is provided with a mounting hole for inserting the connector 8. One end of the connector 8 inserted into the mounting hole has an external thread structure 10. After the connector 8 is inserted into the mounting hole, adjusting nuts 11 are connected to both ends of the mounting hole via the external thread structure 10 of the connector 8. These adjusting nuts 11 can be used to adjust the depth of the connector 8 inserted into the mounting hole. Specifically, the connector 8 is a U-shaped part, with the external thread structure 10 at both ends; simultaneously, both ends of the second rotating shaft 9 have mounting holes, which can be fastened together via adjusting nuts 11.

[0056] In some alternative embodiments, the connector 8 can also be an L-shaped connector 8, with one end having an external thread structure 10 for insertion into the mounting hole of the second rotating shaft 9 and fixation by an adjusting nut 11, and the other end designed as a connection end to match the hook 4. Alternatively, a T-shaped connector 8 can be used, with one end of the vertical bar having an external thread structure 10 for insertion into the mounting hole of the second rotating shaft 9 and fixation by an adjusting nut 11, and both ends of the horizontal bar designed as connection points to the hook 4. The length and shape of the horizontal bar can be customized according to actual installation requirements to accommodate different hook 4 spacings and installation layouts.

[0057] like Figure 4 As shown, in this embodiment, the side of the blind flange 2 facing the main pipe 1 has a sealing groove 12, and a sealing element is provided in the sealing groove 12. The opening of the main pipe 1 has an extension 13 extending outward along the axial direction, and the extension end of the extension 13 has a support 14 extending radially. The support 14 is embedded in the sealing groove 12. With this arrangement, after the blind flange 2 is installed, the support 14 is embedded in the sealing groove 12 and presses against the sealing element. Specifically, the sealing element can be a rubber sealing gasket. Rubber sealing gaskets have good elasticity and sealing performance, and can effectively prevent air leakage.

[0058] In addition, in some alternative embodiments, the seal may be made of other materials, such as graphite packing, sealant, etc.

[0059] like Figure 1 As shown, in this embodiment, a plurality of branch pipes 15 are connected to the side wall of the main pipe 1, and the branch pipes 15 are used to connect to the dryer 16. Specifically, the branch pipes 15 can be connected to the dryer 16 via flexible hoses. The branch pipes 15 are connected to the side wall of the main pipe 1 at an angle, facing away from the first extending direction of the main pipe 1. Specifically, the angle between the branch pipe 15 and the side wall of the main pipe 1 can be between 30° and 45°.

[0060] In addition, in some alternative embodiments, the angle between the branch pipe 15 and the side wall of the main pipe 1 can also be other angles.

[0061] like Figure 6 As shown, an embodiment of this utility model also provides a laundry room, including: the exhaust duct system described in the above embodiments. It also includes: a lint collector 17, connected to the outlet end of the main duct 1 of the exhaust duct system, whose main function is to collect lint discharged from the dryer 16. Specifically, the lint collector 17 can be a wet lint collector 17.

[0062] During the daily operation of the laundry room, the dryer 16 generates a large amount of lint when processing a large quantity of clothes. If this lint is directly released into the external environment, it will reduce air quality. The lint collector 17 can effectively capture the lint discharged from the dryer 16, which can significantly reduce the amount of lint released into the atmosphere, improve the air environment around the laundry room, and avoid adverse effects on the respiratory system of nearby residents or staff.

[0063] Lint is flammable and can easily ignite when it accumulates in the air to a certain concentration and comes into contact with an open flame. Lint collector 17 collects lint discharged from dryer 16, reducing the concentration of lint in and around the laundry room, thereby greatly reducing the risk of fire caused by lint.

[0064] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the present invention.

Claims

1. A ventilation duct system, characterized in that, include: The main duct (1) has a first extending direction for airflow, and the main duct (1) has a first opening at an end away from the first extending direction; A blind flange (2) is detachably connected to the first opening of the main pipe (1). The blind flange (2) and the main pipe (1) are connected by a quick-release structure. The quick-release structure has multiple components spaced around the blind flange (2) in a circumferential manner. The quick-release structure includes a press-type latch (3) and a hook (4) that cooperates with the press-type latch (3). The press-type latch (3) includes a base (5). A press component (6) is rotatably connected to the base (5) via a first rotating shaft (7). A connector (8) is rotatably connected to the press component (6) via a second rotating shaft (9). The distal end of the connector (8) is used to connect with the hook (4).

2. The exhaust duct system according to claim 1, characterized in that, The pressing member (6) has a first rotation direction on the base (5) that brings the connecting member (8) closer to the hook (4), and a second rotation direction that moves the connecting member (8) away from the hook (4); After the pressing member (6) rotates in the first rotation direction, the first rotating shaft (7) is located on the side of the second rotating shaft (9) away from the base (5), and after the pressing member (6) rotates in the second rotation direction, the first rotating shaft (7) is located on the side of the second rotating shaft (9) close to the base (5).

3. The exhaust duct system according to claim 1, characterized in that, The second rotating shaft (9) has a mounting hole for inserting the connector (8). One end of the connector (8) for inserting into the mounting hole has an external thread structure (10). After the connector (8) is inserted into the mounting hole, an adjusting nut (11) is connected to both ends of the mounting hole through the external thread structure (10). The adjusting nut (11) is used to adjust the depth of the connector (8) inserted into the mounting hole.

4. The exhaust duct system according to claim 3, characterized in that, The connector (8) is a U-shaped part, and the two ends of the U-shaped part have the external thread structure (10).

5. The exhaust duct system according to any one of claims 1-4, characterized in that, The blind plate (2) has a sealing groove (12) on the side facing the main pipe (1), and a sealing element is provided in the sealing groove (12); the opening of the main pipe (1) has an extension (13) extending outward along the axial direction, and the extension end of the extension (13) has a support (14) extending radially, and the support (14) is embedded in the sealing groove (12).

6. The exhaust duct system according to any one of claims 1-4, characterized in that, Several branch pipes (15) are connected to the side wall of the main pipe (1), and the branch pipes (15) are used to connect to the dryer (16).

7. The exhaust duct system according to claim 6, characterized in that, The branch pipe (15) is inclined to the side wall of the main pipe (1) on the side away from the first extension direction.

8. A laundry room, characterized in that, include: The exhaust duct system according to any one of claims 1-7.

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