Fire-fighting smoke exhaust device
By designing a fire-fighting smoke exhaust device including air duct components, ventilation components, etc., the problem of uneven smoke exhaust in the prior art is solved, uniform discharge of thick smoke and spraying to reduce dust and cooling during fire, and the escape safety is improved.
Patent Information
- Application Number
- CN202420939916.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The existing fire smoke exhaust device is uneven in the fire, which makes it easy for people to inhale a large amount of smoke when they escape, affecting their vision and escape safety.
A fire-fighting smoke exhaust device is designed, including air duct assembly, ventilation assembly, seal assembly, extension assembly, seal assembly and adjustment assembly. The smoke exhaust function is triggered during fire by the triggering component, and dust-reducing cooling by spraying, the extension assembly extends the length of the air inlet to evenly discharge thick smoke.
It achieves uniform discharge of thick smoke during fire, reduces the risk of people inhaling smoke, improves escape safety, and has the effect of spraying and reducing dust.
Smart Images
Figure CN222617131U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire fighting, in particular to a fire fighting smoke exhaust device. Background Art
[0002] When a fire occurs, combustion will produce a large amount of toxic gases, which fill the escape passage. Inhaling these gases when escaping can easily cause damage to the human body. Existing smoke exhaust devices include fans, smoke exhaust pipes and blocking blocks. Under normal circumstances, the blocking blocks block the smoke exhaust pipes to prevent dust from entering. When a fire occurs, the fan starts to exhaust smoke.
[0003] However, since smoke exhaust devices are usually installed on the roof, they also suck and exhaust smoke from top to bottom. When people escape, they usually bend over to escape, which may cause a large amount of smoke to be inhaled by the human body if the smoke is not exhausted in time. The smoky state will also affect the vision of people and firefighters, which is not conducive to escape or fire fighting. Utility Model Content
[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.
[0005] In view of the problem of uneven smoke exhaust in the above or prior art, the present utility model is proposed.
[0006] Therefore, the purpose of the utility model is to provide a fire smoke exhaust device.
[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a smoke exhaust component, which includes an air duct assembly, and a ventilation assembly fixedly arranged at the end of the air duct assembly, and also includes a sealing assembly slidably arranged in the air duct assembly, and also includes an extension assembly arranged on the sealing assembly, and also includes a sealing assembly slidably arranged on the air duct assembly, and also includes an adjusting assembly fixedly arranged on the sealing assembly, and the adjusting assembly and the sealing assembly are connected; a trigger component, which includes a spraying assembly fixedly arranged on the air duct assembly, and a piston assembly slidably arranged in the spraying assembly, and the piston assembly is connected to the sealing assembly, and also includes a limit assembly fixedly arranged on the spraying assembly and the limit assembly.
[0008] As a preferred solution of the fire smoke exhaust device of the utility model, wherein: the air duct assembly includes a ventilation pipe, a No. 1 air hole is provided at the bottom of the ventilation pipe, a reserved groove is provided in the bottom of the ventilation pipe corresponding to the No. 1 air hole, a sliding groove is provided on the inner wall of the ventilation pipe corresponding to the inner side of the reserved groove, and a No. 2 air hole is provided at the bottom of the ventilation pipe adjacent to the No. 1 air hole.
[0009] As a preferred solution of the fire smoke exhaust device of the utility model, the ventilation assembly includes a fan fixedly arranged at the end of the ventilation pipe, and a button fixedly arranged on the inner wall of the end of the ventilation pipe, and the fan and the button are connected.
[0010] As a preferred solution of the fire smoke exhaust device of the utility model, wherein: the sealing assembly includes a sealing tube slidably arranged on the inner wall of the ventilation pipe, a placement hole is provided at the bottom of the sealing tube, a delay groove is provided adjacent to the placement hole, and the number of the placement holes is the same as the No. 1 air hole and the No. 2 air hole.
[0011] As a preferred solution of the fire smoke exhaust device of the utility model, the extension component includes an anti-slip ring and a hose fixed to the end of the anti-slip ring, and also includes a placement ring fixed to the end of the hose, the end of the placement ring is provided with a conical surface, and the hose and the placement hole are adapted to each other.
[0012] As a preferred solution of the fire smoke exhaust device of the utility model, the sealing assembly includes a sealing plate slidably arranged in the sliding groove, a No. 1 inclined surface is arranged on the top edge of the sealing plate, and a groove is arranged in the middle of the sealing plate.
[0013] As a preferred solution of the fire-fighting smoke exhaust device of the utility model, the adjustment component includes a spring piece fixed in the slot, and a transmission plate fixed at the end of the spring piece, the top edge of the transmission plate is provided with a No. 2 inclined surface, and also includes a pull rod fixed at the bottom of the transmission plate, and also includes a trigger block fixed at the top of the transmission plate, and the outer wall of the trigger block is located at one end of the spring piece and is provided with a No. 3 inclined surface.
[0014] As a preferred solution of the fire smoke exhaust device of the utility model, wherein: the spray assembly includes an equipment shell fixedly arranged at the end of the ventilation pipe, the bottom of the equipment shell is provided with a mounting groove, and an annular disk fixedly arranged on the inner wall of the equipment shell, and also includes a water inlet pipe fixedly arranged on the top of the equipment shell, and also includes a guide pipe fixedly arranged on both sides of the equipment shell, and also includes a nozzle fixedly arranged at the bottom of the guide pipe.
[0015] As a preferred solution of the fire smoke exhaust device of the utility model, the piston assembly includes a piston disk slidably arranged on the inner side of the corresponding annular disk inside the equipment shell, and a connecting rod fixedly arranged at the end of the piston disk, and also includes a baffle fixedly arranged at the end of the connecting rod, and the baffle is connected to the sealing tube.
[0016] As a preferred solution of the fire smoke exhaust device of the utility model, the limiting assembly includes an open ring and a support rod fixed on the open ring, and also includes a liquid-filled thermosensitive glass ball arranged on the open ring, and the support rod is connected to the annular disk and the baffle.
[0017] The beneficial effects of the fire-fighting smoke exhaust device of the utility model: the utility model has the smoke exhaust function triggered by the trigger component during a fire, and has the effect of spraying to reduce dust and temperature, and after the smoke exhaust component is triggered, the extension component will extend the length of part of the air inlet, so that the thick smoke caused by the fire can be evenly discharged, so that people who bend over to escape will inhale less thick smoke, thereby increasing the possibility of people escaping. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0019] Figure 1 This is an overall schematic diagram of the fire smoke exhaust device.
[0020] Figure 2 This is a schematic diagram of the internal structure of the fire smoke exhaust device.
[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the fire smoke exhaust device.
[0022] Figure 4 This is a partial structural diagram of the fire smoke exhaust device.
[0023] Figure 5 This is a schematic diagram of the structure of the trigger component of the fire smoke exhaust device. DETAILED DESCRIPTION
[0024] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.
[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0026] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.
[0027] Example 1, reference Figure 1 to Figure 2 , is the first embodiment of the utility model, which provides a fire smoke exhaust device that can achieve a uniform smoke exhaust effect, comprising a smoke exhaust component 100, which includes an air duct assembly 101, and a ventilation assembly 102 fixedly arranged at the end of the air duct assembly 101, and also includes a sealing assembly 103 slidably arranged in the air duct assembly 101, and also includes an extension assembly 104 arranged on the sealing assembly 103, and also includes a sealing assembly 105 slidably arranged on the air duct assembly 101, and also includes an adjustment assembly 106 fixedly arranged on the sealing assembly 105, the adjustment assembly 106 and the sealing assembly 103 are connected, and by moving the sealing assembly 103, the sealing assembly 103 and the air inlet of the air duct assembly 101 are connected, and at the same time, the sealing assembly 103 will drive the adjustment assembly 106 and the sealing assembly 105 to leave the position of the air inlet of the air duct assembly 101, at this time, the extension assembly 104 will extend out of the air duct assembly 101, and the sealing assembly 103 will trigger the ventilation assembly 102 to start the smoke exhaust function;
[0028] The trigger component 200 includes a spray component 201 fixed on the air duct component 101, and a piston component 202 slidably arranged in the spray component 201. The piston component 202 is connected to the sealing component 103, and also includes a limit component 203 fixed on the spray component 201 and the limit component 203. When a fire occurs, the limit component 203 will be triggered, so that the spray component 201 will resist the piston component 202 to complete the spraying work, and the piston component 202 will push the sealing component 103 to move.
[0029] When in use, the limit assembly 203 will be triggered when a fire occurs, so that the spray assembly 201 will resist the piston assembly 202 to complete the spraying work, and the piston assembly 202 will push the sealing assembly 103 to move, so that the sealing assembly 103 and the air inlet of the air duct assembly 101 are connected, and at the same time, the sealing assembly 103 will drive the adjustment assembly 106 and the sealing assembly 105 to separate from the air inlet position of the air duct assembly 101. At this time, the extension assembly 104 will extend out of the air duct assembly 101, and the sealing assembly 103 will trigger the ventilation assembly 102 to start the smoke exhaust function.
[0030] In summary, when a fire occurs, the trigger component 200 can trigger the smoke exhaust component 100 to trigger the smoke exhaust function, and has the effect of spraying to reduce dust and temperature. After the smoke exhaust component 100 is triggered, the extension component 104 will extend the length of part of the air inlet, so as to evenly discharge the thick smoke caused by the fire, so that people who bend over to escape will inhale less thick smoke, thereby increasing the possibility of people escaping.
[0031] Example 2, reference Figures 1 to 4 , which is the second embodiment of the utility model. Different from the previous embodiment, this embodiment provides a smoke exhaust component 100 of a fire smoke exhaust device, which solves the problem of uneven smoke exhaust. It includes: an air duct assembly 101 includes a ventilation pipe 101a, a No. 1 air hole 101b is provided at the bottom of the ventilation pipe 101a, a reserved groove 101c is provided in the bottom of the ventilation pipe 101a corresponding to the No. 1 air hole 101b, a slide groove 101d is provided on the inner side of the inner wall of the ventilation pipe 101a corresponding to the reserved groove 101c, and a No. 2 air hole 101e is provided at the bottom of the ventilation pipe 101a corresponding to the No. 1 air hole 101b.
[0032] Specifically, the ventilation assembly 102 includes a fan 102a fixedly arranged at the end of the ventilation pipe 101a, and a button 102b fixedly arranged at the inner wall of the end of the ventilation pipe 101a, and the fan 102a and the button 102b are connected.
[0033] Furthermore, the sealing assembly 103 includes a sealing tube 103a slidably arranged on the inner wall of the ventilation pipe 101a, a placement hole 103b is arranged at the bottom of the sealing tube 103a, a delay groove 103c is arranged adjacent to the placement hole 103b, and the number of the placement holes 103b is the same as that of the No. 1 air hole 101b and the No. 2 air hole 101e.
[0034] Furthermore, the extension component 104 includes an anti-slip ring 104a, and a hose 104b fixed at the end of the anti-slip ring 104a, and also includes a placement ring 104c fixed at the end of the hose 104b, the end of the placement ring 104c is provided with a conical surface 104d, the hose 104b and the placement hole 103b are adapted to each other, the hose 104b can move in the placement hole 103b, and the placement ring 104c can be placed in the placement hole 103b, and the placement holes 103b are separated by an extension component 104.
[0035] Furthermore, the sealing assembly 105 includes a sealing plate 105a slidably disposed in the slide groove 101d, a first inclined surface 105b is disposed at the top edge of the sealing plate 105a, and a groove 105c is disposed in the middle of the sealing plate 105a.
[0036] Furthermore, the adjustment component 106 includes a spring piece 106a fixed in the slot 105c, and a transmission plate 106b fixed at the end of the spring piece 106a, a second inclined surface 106c is provided on the top edge of the transmission plate 106b, a pull rod 106d fixed at the bottom of the transmission plate 106b, and a trigger block 106e fixed at the top of the transmission plate 106b, an outer wall of the trigger block 106e is located at one end of the spring piece 106a and is provided with a third inclined surface 106f, and the trigger block 106e can slide in the delay slot 103c.
[0037] The rest of the structure is the same as that of Example 1.
[0038] When in use, the sealing tube 103a and the extension assembly 104 are pushed to move by the trigger component 200, so that the sealing tube 103a moves a certain distance, and then drives the trigger block 106e, the transmission plate 106b, and the sealing plate 105a to move through the delay groove 103c. After moving, the sealing plate 105a will separate from the first air hole 101b and enter the interior of the slide groove 101d, so that the first air hole 101b, the second air hole 101e and the placement hole 103b are connected to each other. At this time, the placement hole 103b is located in the placement hole 103b. The ring 104c loses support and moves downward, and the placement ring 104c drives the hose 104b to move downward until the hose 104b pulls the anti-drop ring 104a to the placement hole 103b. At the same time, the end of the sealing tube 103a triggers the button 102b to activate the fan 102a to start, so that the No. 1 air hole 101b and the placement ring 104c absorb the thick smoke caused by the fire. Because the two air inlets are at different heights, they can absorb the thick smoke at high, medium and low places. After use, the placement ring 104c can be placed in the placement hole 103b, and then by pulling the pull rod 106d, the transmission plate 106b and the spring piece 106a are bent downward, and the transmission plate 106b can drive the trigger block 106e to leave the delay slot 103c. At this time, the pull rod 106d can be pulled to drive the transmission plate 106b, the spring piece 106a, and the sealing plate 105a to enter the first air hole 101b. During this process, the second inclined surface 106c of the sealing plate 105a can contact the conical surface 104d of the placement ring 104c, so as to facilitate reset. At this time, releasing the pull rod 106d can The third inclined surface 106f of the trigger block 106e and the conical surface 104d are matched to support the placement ring 104c. When the sealing tube 103a is reset by the trigger component 200, the placement hole 103b of the sealing tube 103a will pull the placement ring 104c to move, and the conical surface 104d of the placement ring 104c will be separated from the third inclined surface 106f. The trigger block 106e will contact the bottom of the placement ring 104c, thereby preventing the placement ring 104c from contacting the first air hole 101b, and the reset can be successfully completed.
[0039] In summary, during a fire, thick smoke can be absorbed from various heights, so that people who bend over to escape will inhale less smoke, and after the fire, they can be reset in a relatively simple way.
[0040] Example 3, reference Figures 1 to 5, which is the third embodiment of the utility model. Different from the previous embodiment, this embodiment provides a trigger component 200 of a fire smoke exhaust device, which solves the problem of triggering smoke exhaust. It includes a spray assembly 201 including an equipment shell 201a fixedly arranged at the end of a ventilation pipe 101a, a mounting groove 201b is provided at the bottom of the equipment shell 201a, and an annular disk 201c fixedly arranged on the inner wall of the equipment shell 201a, and also includes a water inlet pipe 201d fixedly arranged at the top of the equipment shell 201a, and the water inlet pipe 201d needs to be connected to an external water source, and also includes a guide pipe 201e fixedly arranged on both sides of the equipment shell 201a, and also includes a nozzle 201f fixedly arranged at the bottom of the guide pipe 201e, and the nozzle 201f is an atomizing nozzle, and its function is to reduce dust and temperature.
[0041] Specifically, the piston assembly 202 includes a piston disk 202a slidably disposed inside the equipment shell 201a corresponding to the inner side of the annular disk 201c, and a connecting rod 202b fixedly disposed at the end of the piston disk 202a, and also includes a baffle 202c fixedly disposed at the end of the connecting rod 202b, and the baffle 202c is connected to the sealing tube 103a.
[0042] Furthermore, the limiting assembly 203 includes an open ring 203a, a support rod 203b fixed on the open ring 203a, and a liquid-filled thermosensitive glass ball 203c arranged on the open ring 203a. The support rod 203b is connected to the annular disk 201c and the baffle 202c.
[0043] The rest of the structure is the same as that of Example 2.
[0044] When in use, due to the high temperature in a fire, the heat will be quickly transferred to the liquid-filled thermosensitive glass ball 203c through the installation groove 201b, so that the liquid-filled thermosensitive glass ball 203c is broken. After the liquid-filled thermosensitive glass ball 203c is broken, the open ring 203a loses its fixation, so that the external water source of the water inlet pipe 201d continues to enter the interior of the equipment shell 201a, so that the water pressure inside the equipment shell 201a pushes the piston disk 202a, the connecting rod 202b and the baffle 202c to move, and the baffle 202c can push the sealing tube 103a to move. After the piston disk 202a moves, it will resist the annular disk 201 c. At this time, the water source will be introduced into the guide pipe 201e and sprayed out from the nozzle 201f to reduce the dust and temperature at the fire site. When it needs to be reset, water is absorbed from the water inlet pipe 201d by using the corresponding equipment, so that the piston disk 202a, the connecting rod 202b and the baffle 202c are reset. At this time, a new liquid-filled thermal glass ball 203c is installed at the open ring 203a through the installation groove 201b, so that the open rings 203a and the support rod 203b on both sides can use the annular disk 201c as the base point to limit the baffle 202c. At this time, the water inlet pipe 201d is connected to the external water source again to complete the replacement.
[0045] In summary, the smoke exhaust component 100 can be triggered in case of fire, and the dust reduction and temperature reduction functions can be triggered at the same time, and it can be reset and used again after use.
[0046] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values (e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.
[0047] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.
[0048] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.
[0049] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A fire smoke exhaust device, characterized in that: include, A smoke exhaust component (100), comprising an air duct assembly (101), and a ventilation assembly (102) fixedly arranged at the end of the air duct assembly (101), a sealing assembly (103) slidably arranged in the air duct assembly (101), an extension assembly (104) arranged on the sealing assembly (103), a sealing assembly (105) slidably arranged on the air duct assembly (101), and an adjusting assembly (106) fixedly arranged on the sealing assembly (105), wherein the adjusting assembly (106) and the sealing assembly (103) are connected; The trigger component (200) comprises a spray component (201) fixedly mounted on the air duct component (101), and a piston component (202) slidably mounted in the spray component (201), wherein the piston component (202) is connected to the sealing component (103), and further comprises a limit component (203) fixedly mounted on the spray component (201) and the limit component (203).
2. The fire smoke exhaust device according to claim 1, characterized in that: The air duct assembly (101) comprises a ventilation duct (101a), a first air hole (101b) being provided at the bottom of the ventilation duct (101a), a reserved groove (101c) being provided in the bottom of the ventilation duct (101a) corresponding to the first air hole (101b), a sliding groove (101d) being provided on the inner side of the inner wall of the ventilation duct (101a) corresponding to the reserved groove (101c), and a second air hole (101e) being provided at the bottom of the ventilation duct (101a) corresponding to the first air hole (101b) and adjacent to it.
3. The fire smoke exhaust device according to claim 2, characterized in that: The ventilation assembly (102) comprises a fan (102a) fixedly arranged at the end of the ventilation pipe (101a), and a button (102b) fixedly arranged at the inner wall of the end of the ventilation pipe (101a), and the fan (102a) and the button (102b) are connected.
4. The fire smoke exhaust device according to claim 3, characterized in that: The sealing assembly (103) comprises a sealing tube (103a) slidably arranged on the inner wall of the ventilation tube (101a), a placement hole (103b) is arranged at the bottom of the sealing tube (103a), a delay groove (103c) is arranged adjacent to the placement hole (103b), and the number of the placement holes (103b) is the same as that of the No. 1 air hole (101b) and the No. 2 air hole (101e).
5. The fire smoke exhaust device according to claim 3 or 4, characterized in that: The extension component (104) includes an anti-slip ring (104a), and a hose (104b) fixedly arranged at the end of the anti-slip ring (104a), and also includes a placement ring (104c) fixedly arranged at the end of the hose (104b), and the end of the placement ring (104c) is provided with a conical surface (104d), and the hose (104b) and the placement hole (103b) are adapted to each other.
6. The fire smoke exhaust device according to claim 5, characterized in that: The sealing assembly (105) comprises a sealing plate (105a) slidably arranged in the sliding groove (101d), a first inclined surface (105b) is arranged on the top edge of the sealing plate (105a), and a groove (105c) is arranged in the middle of the sealing plate (105a).
7. The fire smoke exhaust device according to claim 6, characterized in that: The adjustment component (106) includes a spring sheet (106a) fixed in the slot (105c), and a transmission plate (106b) fixed at the end of the spring sheet (106a), the top edge of the transmission plate (106b) is provided with a second inclined surface (106c), and also includes a pull rod (106d) fixed at the bottom of the transmission plate (106b), and also includes a trigger block (106e) fixed at the top of the transmission plate (106b), and the outer wall of the trigger block (106e) is located at one end of the spring sheet (106a) and is provided with a third inclined surface (106f).
8. The fire smoke exhaust device according to claim 7, characterized in that: The spray assembly (201) comprises a device shell (201a) fixedly arranged at the end of the ventilation pipe (101a), a mounting groove (201b) being provided at the bottom of the device shell (201a), and an annular disk (201c) fixedly arranged on the inner wall of the device shell (201a), a water inlet pipe (201d) fixedly arranged at the top of the device shell (201a), a flow guide pipe (201e) fixedly arranged at both sides of the device shell (201a), and a spray head (201f) fixedly arranged at the bottom of the flow guide pipe (201e).
9. The fire smoke exhaust device according to claim 8, characterized in that: The piston assembly (202) includes a piston disk (202a) slidably disposed on the inner side of a corresponding annular disk (201c) inside the device shell (201a), and a connecting rod (202b) fixedly disposed at the end of the piston disk (202a), and also includes a baffle (202c) fixedly disposed at the end of the connecting rod (202b), and the baffle (202c) is connected to the sealing tube (103a).
10. The fire smoke exhaust device according to claim 8 or 9, characterized in that: The position limiting assembly (203) comprises an open ring (203a), a support rod (203b) fixedly arranged on the open ring (203a), and a liquid-filled thermosensitive glass ball (203c) arranged on the open ring (203a); the support rod (203b) is connected to the annular disk (201c) and the baffle (202c).