A basement fire ventilation structure

Abstract

The present application discloses a basement fire-fighting ventilation structure, which relates to the technical field of basement fire-fighting engineering. It includes a number of fans and a number of ventilation ducts. The ventilation ducts include a number of duct units and a number of connection units. Both ends of the duct unit have connection sections. The connection unit includes a connection sleeve. The interior of the connection sleeve has a cavity. The connection sleeve is simultaneously sleeved on the connection sections of the two duct units, and the connection section is connected to the connection sleeve. The ventilation duct further includes a number of intercepting members for intercepting particulate matter. The intercepting members are installed in the cavity, and the intercepting members are detachably connected to the connection sleeve. An installation opening adapted to the intercepting member is formed on the connection sleeve. The installation opening communicates with the cavity and is located at one end of the connection sleeve away from the basement top. This application enables the staff to facilitate the cleaning of the ventilation duct after a fire occurs.

Description

Technical Field

[0001] The present application relates to the technical field of basement fire protection engineering, and in particular to a basement fire protection ventilation structure. Background Art

[0002] Basement fire protection project, as the name suggests, is a project that uses the basement as a carrier and aims at fire protection (against fire). Common basement fire protection projects include fire water systems, automatic fire alarm systems, gas fire extinguishing systems, smoke prevention and exhaust systems, emergency evacuation systems, etc.

[0003] Among them, the smoke exhaust system in the basement is mainly implemented in the form of a ventilation structure, including a fan and ventilation ducts. The fan drives the air inside the basement to be discharged to the outside through the ventilation ducts. The fan promotes air circulation between the basement and the outside, so that when a fire occurs in the basement, the smoke can be discharged from the basement, thereby reducing the situation where trapped people in the basement cannot inhale excessive smoke and die due to the inability to discharge a large amount of smoke.

[0004] However, when the ventilation structure discharges smoke during a fire in the basement, the smoke often carries particulate matter such as ashes from combustion into the ventilation duct, and the particulate matter such as ashes from combustion tends to remain in the ventilation duct. After the fire, if the ventilation structure continues to be used directly, the particulate matter such as ashes from combustion remaining in the ventilation duct will be directly discharged to the outside with the air circulation, which will affect the outdoor air quality.

[0005] Therefore, after a fire, the interior of the ventilation duct needs to be cleaned to reduce the residue of particulate matter such as ashes of the burning objects in the ventilation duct. However, the existing cleaning process requires the ventilation structure to be disassembled as a whole for cleaning, which is labor-intensive and inefficient. Summary of the invention

[0006] The present application provides a basement fire ventilation structure, which is convenient for workers to clean the ventilation duct after a fire occurs, thereby reducing the residue of particulate matter such as ashes of combustion products in the ventilation duct.

[0007] The present application provides a basement fire ventilation structure, which adopts the following technical solutions:

[0008] A basement fire ventilation structure, comprising a plurality of fans and a plurality of ventilation ducts, wherein the fans are arranged on the ventilation ducts, and the two ends of the ventilation ducts are respectively communicated with the basement and the outside, and the ventilation ducts comprise a plurality of pipe units and a plurality of connecting units, and both ends of the pipe units have connecting sections, and the connecting units comprise connecting sleeves, and the connecting sleeves are connected to the top of the basement, and the interior of the connecting sleeves has a cavity for inserting the connecting sections, and the connecting sleeves are simultaneously sleeved on the connecting sections of the two pipe units, and the connecting sections are connected to the connecting sleeves;

[0009] The ventilation duct also includes a plurality of intercepting members for intercepting particulate matter, the intercepting members are installed in the cavity, and the intercepting members are detachably connected to the connecting sleeve; the connecting sleeve is provided with an installation opening adapted to the intercepting members, the installation opening is communicated with the cavity and is located at one end of the connecting sleeve away from the top of the basement.

[0010] By adopting the above technical scheme, when a fire occurs, after the ashes of the burning materials and other particulate matter are discharged into the ventilation duct along with the smoke, the intercepting piece can intercept the particulate matter, so that the particulate matter is concentrated in the connecting sleeve, and along the direction of the smoke discharge, the particulate matter intercepted by the intercepting piece in several connecting sleeves gradually decreases, which can reduce the scope of the final impact of the residual particulate matter on the ventilation duct, thereby reducing the scope that the staff needs to clean after the fire and reducing the workload; when cleaning the ventilation duct after the fire, the staff can judge the area of ​​the ventilation duct that needs to be cleaned by disassembling the intercepting piece and observing the condition of the particulate matter attached to the intercepting piece, thereby reducing the workload of disassembling the pipeline unit, and when the intercepting piece is removed for cleaning, it can also facilitate the particulate matter remaining in the connecting sleeve to fall out of the installation port, making the cleaning process more convenient and improving the cleaning efficiency.

[0011] Optionally, the pipeline unit has a corrugated section between the two connecting sections, the pipeline unit has ductility along the length direction, and the connecting section is slidably connected to the connecting sleeve.

[0012] By adopting the above technical solution, the staff can change the length of the pipe unit by changing the extension of the corrugated section, thereby facilitating the disassembly and assembly of the pipe unit, shortening the time required for disassembly and assembly during the cleaning process of the pipe unit, simplifying the operation process, and further improving the efficiency of cleaning the ventilation duct after a fire; at the same time, the corrugated section has the effect of reducing echoes, and can suppress the noise generated during the use of the ventilation structure from propagating in the basement when no fire occurs, thereby reducing the impact of noise.

[0013] Optionally, the pipeline unit has a tendency to stretch after being heated, the corrugated section stretches in a direction close to the connecting sleeve and is in a stretched state, and the two connecting sections slide to extreme positions in a direction away from the corrugated section respectively.

[0014] By adopting the above technical solution, when a fire occurs, the pipeline unit stretches outward due to the heat, and the sliding fit between the connecting section and the connecting sleeve provides a deformation margin for the expansion of the pipeline unit, thereby reducing the probability that the pipeline unit is affected by thermal expansion and contraction, thereby affecting the connection relationship between itself and the connecting sleeve. At the same time, the probability of the pipeline unit being squeezed and deformed after being stretched due to heat is reduced, thereby extending the service life of the pipeline unit.

[0015] Optionally, it also includes a plurality of elastic members, which are arranged on the connecting sleeve, and drive the connecting section to slide to an extreme position in a direction away from the cavity, and make the corrugated section contracted, and the force of the stretching tendency of the pipeline unit after heating is greater than the force of the elastic members.

[0016] By adopting the above technical solution, when no fire occurs, the elastic member drives the corrugated section on the pipe unit to maintain a contracted state, which can not only improve the position stability of the pipe unit after installation and facilitate the staff to disassemble and assemble the pipe unit, but also ensure that the corrugated section effectively reduces the echo when no fire occurs; and the elastic member has a smaller tendency to stretch the pipe unit after heating, and the pipe unit can still stretch normally after heating.

[0017] Optionally, a plurality of cleaning pieces are further included, wherein the cleaning pieces are arranged on the connecting sleeve and located in the cavity; when the intercepting piece is located in the cavity, the cleaning pieces abut against the intercepting piece.

[0018] By adopting the above technical solution, when the staff removes the intercepting member and takes it out from the cavity, the cleaning member will move relative to the intercepting member in a state of abutting against the intercepting member, thereby cleaning the particulate matter attached to the intercepting member, which can reduce the time required for additional cleaning of the intercepting member after it is taken out.

[0019] Optionally, the cleaning member is slidably connected to the connecting sleeve, and the sliding direction of the cleaning member is parallel to the plane where the intercepting member is located.

[0020] By adopting the above technical solution, when the intercepting member is installed on the connecting sleeve, that is, the intercepting member is located in the cavity, the particulate matter attached to the intercepting member can be cleaned by controlling the sliding of the cleaning member, thereby providing more ways to clean the intercepting member, thereby further facilitating the staff to clean the particulate matter attached to the intercepting member.

[0021] Optionally, it further includes a plurality of linkage members, one end of each linkage member is rotatably connected to the connecting section, and the other end of each linkage member is rotatably connected to the cleaning member, and the connecting section slides relative to the connecting sleeve to drive the cleaning member to slide.

[0022] By adopting the above technical solution, when a fire occurs, the pipeline unit is heated and stretched to cause the connecting section to slide, and the sliding of the connecting section drives the sliding of the cleaning piece through the linkage part, so that the cleaning piece can clean the intercepting piece when a fire occurs, thereby reducing the probability that smoke cannot be discharged in time due to blockage of the intercepting piece when a fire occurs; at the same time, in the process of disassembling the pipeline unit, the connecting section at one end of the pipeline unit can also slide and drive the corresponding cleaning piece through the linkage part to clean the intercepting piece, making the operation more convenient.

[0023] Optionally, the cleaning member has a plurality of elastic toggle bars at one end close to the intercepting member, the toggle bars abut against the intercepting member and are curved, and when the cleaning member slides relative to the intercepting member, the plurality of toggle bars toggle the intercepting member to cause the intercepting member to vibrate.

[0024] By adopting the above technical solution, during the sliding process of the cleaning member relative to the intercepting member, a plurality of toggle bars will repeatedly toggle the intercepting member to cause the intercepting member to vibrate, thereby accelerating the falling of particulate matter attached to the intercepting member and improving the cleaning effect of the cleaning member on the intercepting member.

[0025] Optionally, the connecting sleeve has two inclined guide surfaces on the cavity wall of the cavity close to the installation port, the two guide surfaces are respectively located on both sides of the installation port, and one end of the guide surface close to the connecting section is an inclined upper end.

[0026] By adopting the above technical solution, after the intercepting member is disassembled and taken out, the particulate matter intercepted and retained in the cavity by the intercepting member and the particulate matter cleaned off the intercepting member by the cleaning member can move along the guide surface toward the installation port, and finally fall out of the installation port, thereby making the process of the particulate matter falling out of the cavity more convenient and quick.

[0027] In summary, the present application includes at least one of the following beneficial effects:

[0028] 1. When a fire occurs, it can intercept the burning ashes and other particulate matter that moves along the ventilation duct along with the smoke, thereby reducing the impact range of the particulate matter on the ventilation duct, thereby reducing the workload of cleaning the ventilation duct after the fire;

[0029] 2. After a fire occurs, the area in the ventilation duct that needs to be cleaned can be determined by disassembling and removing the intercepting parts, thereby improving the efficiency of cleaning the ventilation duct;

[0030] 3. During the process of disassembling and removing the intercepting member, the particulate matter attached to the surface of the intercepting member can be cleaned and dropped by the cleaning member; and after the intercepting member is removed, the particulate matter remaining in the cavity can be dropped from the installation port, which is convenient for cleaning;

[0031] 4. The pipe unit is ductile when heated, so that the pipe unit can protect itself by extending when a fire occurs, and at the same time drive the cleaning unit to clean the interception unit, reducing the probability that the smoke cannot be discharged in time due to excessive particulate matter attached to the interception unit;

[0032] 5. When there is no fire, the corrugated section on the pipe unit has the effect of reducing echo, which can reduce the impact of the noise generated by the ventilation structure when it is working in the basement. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram of a basement fire protection ventilation structure in Example 1;

[0034] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0035] Figure 3 yes Figure 2 Cross-sectional view from the perspective of the middle BB;

[0036] Figure 4 is a partial schematic diagram of the ventilation duct when no fire occurs in Example 2;

[0037] Figure 5 It is a partial schematic diagram of the ventilation duct when a fire occurs in Example 2.

[0038] Explanation of the reference numerals: 1. Fan; 2. Ventilation duct; 3. Connecting unit; 31. Connecting sleeve; 311. Cavity; 312. Mounting groove; 313. Mounting opening; 314. Sliding groove; 315. Guide surface; 32. Lifting member; 4. Pipe unit; 41. Connecting section; 411. Bump; 42. Corrugated section; 5. Intercepting member; 51. Frame; 511. Handle; 512. Locking groove; 52. Intercepting net; 6. Locking member; 7. Cleaning member; 71. Toggle bar; 8. Linkage member; 9. Limiting member; 10. Elastic member. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-5 This application is described in further detail.

[0040] Embodiment 1:

[0041] Reference Figure 1 The embodiment of the present application discloses a basement fire ventilation structure, the ventilation structure includes a plurality of fans 1 and a plurality of ventilation ducts 2, the fans 1 correspond to the ventilation ducts 2 one by one, and in this embodiment, it is preferred to take the ventilation structure including a fan 1 and a ventilation duct 2 as an example for introduction.

[0042] The ventilation duct 2 is fixedly installed on the ceiling of the basement and is located near the ceiling in the basement. The two ends of the ventilation duct 2 are connected to the basement and the outside respectively; the fan 1 is fixedly installed in the ventilation duct 2, and the fan 1 is located at one end of the ventilation duct 2 close to the outside. After the fan 1 is started, it will drive the air in the basement to flow to the outside through the ventilation duct 2, thereby promoting air circulation. In this embodiment, since the fan 1 is a common prior art, it will not be described here.

[0043] Reference Figure 1 and Figure 2 The ventilation duct 2 includes a plurality of connection units 3 and a plurality of pipe units 4. The connection units 3 are fixedly installed on the ceiling of the basement. The plurality of connection units 3 are evenly spaced along the trajectory of the ventilation duct 2, and a pipe unit 4 is installed between each of the adjacent connection units 3. In this embodiment, the pipe unit 4 is preferably a square tube. Since the structures at both ends of the ventilation duct 2 are different, the structures of the pipe units 4 at both ends of the ventilation duct 2 are different from those of other pipe units 4. This is a common structural adjustment in the art and will not be described in detail here.

[0044] Reference Figure 2 and Figure 3 The connection unit 3 includes a connection sleeve 31 and two hanging parts 32. The two hanging parts 32 are parallel to each other and are both located on one side of the connection sleeve 31. The two ends of the hanging parts 32 are respectively fixedly connected to the ceiling of the basement and the connection sleeve 31. The hanging parts 32 are in a vertical state after installation. The fixed connection positions of the two hanging parts 32 and the connection sleeve 31 are respectively located at the two ends of the connection sleeve 31. The connection sleeve 31 has a cavity 311 inside. After the pipe unit 4 is installed between two adjacent connection units 3, the two ends of the pipe unit 4 are respectively communicated with the cavities 311 of the two adjacent connection sleeves 31.

[0045] The ventilation duct 2 also includes a plurality of intercepting members 5 for intercepting particulate matter such as ashes of combustion products. The intercepting members 5 include a frame 51 and an intercepting net 52. The intercepting net 52 is fixedly installed in the hollow position in the middle of the frame 51. An installation groove 312 for installing the intercepting members 5 is provided inside the connecting sleeve 31. The installation groove 312 is communicated with the cavity 311, and the installation groove 312 passes through the bottom of the connecting sleeve 31 to form an installation opening 313 for the intercepting members 5 to enter and exit the installation groove 312. The shape and size of the intercepting net 52 are the same as the shape and size of the cross section of the cavity 311. After the intercepting member 5 is installed in the installation groove 312, the projection of the intercepting net 52 along the length direction of the connecting sleeve 31 coincides with the cross section of the cavity 311.

[0046] After the interception member 5 is installed in the installation groove 312, the interception net 52 divides the cavity 311 into two halves; one side of the frame 51 is provided with a handle 511 for the staff to disassemble and install the interception member 5 on the connecting sleeve 31. After the interception member 5 is installed in the installation groove 312, the handle 511 is located in the installation groove 312 and is located in the installation groove 312 near the installation opening 313;

[0047] Reference Figure 3 , the connecting sleeve 31 is also fixedly installed with a plurality of locking members 6 inside the sleeve wall, and the plurality of locking members 6 are respectively located at the two ends of the connecting sleeve 31, and the plurality of locking members 6 are symmetrically distributed on the connecting sleeve 31. After the locking member 6 is installed on the connecting sleeve 31, one end of the locking member 6 is located in the installation groove 312, and the end of the locking member 6 located in the installation groove 312 can be extended and retracted in the direction close to the cavity 311 and has a tendency to remain in the extended state. The two sides of the frame 51 are correspondingly provided with locking grooves 512 for the locking member 6 to be inserted; during the process of inserting the intercepting member 5 into the installation groove 312, the frame 51 first squeezes the locking member 6 to contract, and after the frame 51 is completely inserted into the installation groove 312, the locking member 6 is aligned with the corresponding locking groove 512, and the locking member 6 automatically extends and snaps into the plug-in groove, so that the intercepting member 5 is fixed relative to the connecting sleeve 31; when the intercepting member 5 needs to be disassembled, it can be taken out by applying a little force to the intercepting member 5. In this embodiment, the locking member 6 is preferably a ball screw, and preferably two locking members 6 are installed on the pipeline unit 4. Since the ball screw is a common prior art, it will not be described in detail here.

[0048] Reference Figure 2 The two ends of the pipe unit 4 in the length direction are provided with connecting sections 41, and the connecting section 41 is plug-fitted with the connecting sleeve 31, and the connecting section 41 is fixedly connected with the connecting sleeve 31. In this embodiment, it is preferred that the connecting section 41 and the connecting sleeve 31 are fixedly connected by a screw.

[0049] The implementation principle of a basement fire ventilation structure in the embodiment of the present application is:

[0050] When a fire occurs in the basement, the fan 1 drives the smoke to be discharged from the basement to the outside along the ventilation duct 2. When the smoke carries particulate matter such as burning ashes and passes through the cavities 311 of the plurality of connecting sleeves 31, the plurality of intercepting members 5 will intercept the particulate matter and leave it at the bottom of the cavity 311.

[0051] After the fire is over, the amount of particulate matter remaining in the plurality of cavities 311 will gradually decrease along the direction of smoke exhaust. The staff can determine whether the ventilation duct 2 needs to be cleaned and the area on the ventilation duct 2 that needs to be cleaned by removing the corresponding interception member 5 and observing its interception situation, thereby improving the efficiency of cleaning the ventilation duct 2;

[0052] After the intercepting member 5 is disassembled and removed, the particulate matter intercepted by the intercepting member 5 and retained in the cavity 311 can fall out from the installation opening 313 , making it convenient for the staff to clean the particulate matter in the cavity 311 .

[0053] Embodiment 2:

[0054] Reference Figure 2 and Figure 4 The difference between this embodiment and embodiment 1 lies in the structure of the pipeline unit 4, and the ventilation structure also includes a plurality of cleaning parts 7 and a plurality of linkage parts 8.

[0055] Reference Figure 4 The pipe unit 4 further has a corrugated section 42 between the two connecting sections 41. The corrugated section 42 is ductile along its length direction, and the corrugated section 42 can expand and change its own expansion direction according to thermal expansion and contraction. In this embodiment, the pipe unit 4 is preferably made of a metal material or alloy with significant thermal expansion and contraction, such as steel, copper, iron, etc.

[0056] Reference Figure 4 and Figure 5 The connecting section 41 is slidably connected to the connecting sleeve 31. The end of the connecting section 41 away from the corrugated section 42 has a plurality of protrusions 411. The connecting sleeve 31 is provided with sliding grooves 314 adapted to the plurality of protrusions 411 on the cavity wall of the cavity 311. The sliding grooves 314 penetrate the connecting sleeve 31 in a direction away from the mounting groove 312 to form an opening. The plurality of protrusions 411 on the corrugated section 42 correspond one-to-one to the plurality of sliding grooves 314 at one end of the connecting sleeve 31. The plurality of sliding grooves 314 are respectively located at the top and bottom of the cavity 311, and the length direction of the sliding grooves 314 is parallel to the length direction of the pipeline unit 4.

[0057] The ventilation structure further includes a plurality of stoppers 9. After the connection section 41 is slidably connected with the connection sleeve 31, the stoppers 9 are inserted into the sliding groove 314. The stoppers 9 are located at one end of the sliding groove 314 away from the mounting groove 312 and at the side of the protrusion 411 away from the interception member 5. The stoppers 9 are fixedly connected with the connection sleeve 31. The connection section 41 is restricted from separating from the connection sleeve 31 during sliding along the sliding groove 314. In this embodiment, the stoppers 9 are preferably fixedly connected with the connection sleeve 31 via a screw.

[0058] The ventilation structure further includes a plurality of elastic members 10, which correspond to the plurality of sliding grooves 314 one by one. The elastic members 10 are installed in the sliding grooves 314, one end of the elastic member 10 is fixedly connected to the groove wall of the sliding groove 314 close to the mounting groove 312, and the other end of the elastic member 10 is fixedly connected to the protrusion 411. The elastic member 10 drives the protrusion 411 to slide in a direction away from the mounting groove 312 until the protrusion 411 abuts against the stopper 9. In this embodiment, the elastic member 10 is preferably a compression spring.

[0059] During the use of the pipe unit 4 after installation, the corrugated section 42 has two states: contraction and extension. When there is no fire in the basement, the protrusions 411 on the two connecting sections 41 are kept against the corresponding limit members 9 under the action of the corresponding elastic members 10. At this time, the corrugated section 42 is in a contracted state, and the grooves formed on the surface of the corrugated section 42 have the effect of reducing echoes. When a fire occurs in the basement, the overall temperature of the pipe unit 4 rises, and the temperature rise causes both ends of the corrugated section 42 to extend outward along its own length direction. At this time, the force of the extension trend of the corrugated section 42 is greater than the force of the elastic member 10, so that the protrusions 411 on the connecting section 41 slide along the sliding groove 314 toward the direction close to the corresponding installation groove 312. At this time, the corrugated section 42 is in an extended state.

[0060] Reference Figure 4 and Figure 5 , several cleaning members 7 are installed in the cavity 311 of the connecting sleeve 31, the cleaning members 7 are slidably connected to the connecting sleeve 31, and the sliding direction of the cleaning members 7 is vertical. The cleaning member 7 has several elastic toggle bars 71 on the side close to the interception net 52, the end of the toggle bar 71 is against the interception net 52, and the toggle bar 71 is in a bent state under the restriction of the interception net 52. During the sliding process of the cleaning member 7, the several toggle bars 71 on the cleaning member 7 will toggle the interception net 52 at a certain frequency, and the toggle bar 71 will vibrate the interception net 52 after toggle the interception net 52, so as to facilitate the falling of the particulate matter attached to the interception net 52. In this embodiment, preferably, four cleaning members 7 are installed in the cavity 311 of each connecting sleeve 31, and the four cleaning members 7 are respectively located on both sides of the interception member 5 in pairs, and the two cleaning members 7 on the same side are respectively close to the top and bottom of the interception member 5, and the toggle bar 71 is preferably a rubber product.

[0061] The plurality of linkage members 8 are also installed in the cavity 311 of the connecting sleeve 31. The plurality of linkage members 8 correspond to the plurality of sliding grooves 314 one by one. The linkage members 8 are located on the side of the cleaning member 7 away from the intercepting member 5. One end of the linkage member 8 is rotatably connected to the protrusion 411, and the other end of the linkage member 8 is rotatably connected to the cleaning member 7. The rotation axis between the linkage member 8 and the protrusion 411 and the rotation axis between the linkage member 8 and the cleaning member 7 are both horizontal and perpendicular to the sliding direction of the protrusion 411.

[0062] When the protrusion 411 abuts against the limit member 9, the protrusion 411 drives the cleaning member 7 to abut against the wall of the cavity 311 through the linkage member 8, and the cleaning member 7 is at the extreme position at this time; when the protrusion 411 overcomes the force of the elastic member 10 and slides, the protrusion 411 drives the cleaning member 7 to slide toward the other cleaning member 7 on the same side through the linkage member 8 until the two cleaning members 7 on the same side abut against each other, and during the sliding process of the cleaning member 7, a number of toggling members to toggle the interception net 52 to clean the particulate matter on the interception net 52.

[0063] During the process of disassembling and removing the intercepting member 5 , the cleaning members 7 can be regarded as sliding relative to the intercepting member 5 , so the cleaning members 7 can also move the intercepting net 52 during this process to clean the particulate matter on the intercepting net 52 .

[0064] The cavity 311 of the connecting sleeve 31 has two guide surfaces 315 on the cavity wall near the installation opening 313. The two guide surfaces 315 are respectively located on both sides of the installation opening 313, and the guide surfaces 315 are located between the installation slot 312 and the sliding slot 314. The guide surfaces 315 are inclined surfaces, and the end of the guide surface 315 near the installation opening 313 is the inclined lower end. The granular matter intercepted by the interception net 52 and the granular matter dropped from the interception net 52 by the cleaning member 7 will fall onto the guide surface 315. After the corresponding interception member 5 is disassembled and taken out, the granular matter in the cavity 311 will move along the guide surface 315 to the installation opening 313 and fall.

[0065] The implementation principle of a basement fire ventilation structure in the embodiment of the present application is:

[0066] When a fire occurs in the basement, the high temperature causes the corrugated section 42 of the pipe unit 4 to extend, and the sliding groove 314 provides space for the extension of the corrugated section 42, thereby reducing the probability that the pipe unit 4 is deformed and disconnected from the connecting sleeve 31 due to the high temperature; at the same time, in the process of the high temperature driving the corrugated section 42 to extend, the connecting section 41 will drive the cleaning member 7 to slide through the linkage member 8 to clean the interception net 52, thereby reducing the probability that the interception net 52 is blocked by particulate matter and the smoke cannot be discharged in time;

[0067] After a fire occurs in the basement, the intercepting member 5 is disassembled and removed to check its interception of particulate matter. At the same time, several cleaning members 7 on both sides of the intercepting member 5 can move the particulate matter attached to the intercepting net 52 to fall off. After the intercepting member 5 is taken out, the particulate matter in the cavity 311 will fall along the guide surface 315 at the installation port 313. The staff can judge whether the ventilation duct 2 needs to be cleaned and the area on the ventilation duct 2 that needs to be cleaned by observing the falling of the particulate matter. This is convenient for the staff to make a judgment and can also save extra time for cleaning the intercepting member 5.

[0068] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A basement fire ventilation structure, comprising a plurality of fans (1) and a plurality of ventilation ducts (2), wherein the fans (1) are arranged on the ventilation ducts (2), and the two ends of the ventilation ducts (2) are respectively connected to the inside of the basement and the outside of the basement. It is characterized in that The ventilation duct (2) comprises a plurality of duct units (4) and a plurality of connection units (3), each of the duct units (4) having a connection section (41) at both ends, the connection unit (3) comprising a connection sleeve (31), the connection sleeve (31) being connected to the top of the basement, the connection sleeve (31) having a cavity (311) inside for inserting the connection section (41), the connection sleeve (31) being simultaneously sleeved on the connection sections (41) of the two duct units (4), the connection section (41) being connected to the connection sleeve (31); The ventilation duct (2) further comprises a plurality of intercepting members (5) for intercepting particulate matter, the intercepting members (5) being installed in the cavity (311), and the intercepting members (5) being detachably connected to the connecting sleeve (31); a mounting opening (313) adapted to the intercepting members (5) is provided on the connecting sleeve (31), the mounting opening (313) being communicated with the cavity (311) and being located at an end of the connecting sleeve (31) away from the top of the basement; The pipeline unit (4) has a corrugated section (42) between the two connecting sections (41); the pipeline unit (4) has ductility along the length direction; and the connecting section (41) is slidably connected to the connecting sleeve (31); The pipe unit (4) has a tendency to stretch after being heated, the corrugated section (42) stretches in a direction close to the connecting sleeve (31) and is in a stretched state, and the two connecting sections (41) slide in a direction away from the corrugated section (42) to an extreme position respectively; It also comprises a plurality of cleaning members (7), wherein the cleaning members (7) are arranged on the connecting sleeve (31) and are located in the cavity (311); when the intercepting member (5) is located in the cavity (311), the cleaning members (7) abut against the intercepting member (5); The cleaning member (7) is slidably connected to the connecting sleeve (31), and the sliding direction of the cleaning member (7) is parallel to the plane where the intercepting member (5) is located; It also comprises a plurality of linkage members (8), one end of each linkage member (8) being rotatably connected to the connecting section (41), the other end of each linkage member (8) being rotatably connected to the cleaning member (7), and the connecting section (41) slidingly moves relative to the connecting sleeve (31) to drive the cleaning member (7) to slide; The cleaning member (7) has a plurality of elastic shifting bars (71) at one end close to the intercepting member (5), the shifting bars (71) abutting against the intercepting member (5) and being curved, and when the cleaning member (7) slides relative to the intercepting member (5), the plurality of shifting bars (71) shift the intercepting member (5) to cause the intercepting member (5) to vibrate; It also comprises a plurality of elastic members (10), wherein the elastic members (10) are arranged on the connecting sleeve (31), and the elastic members (10) drive the connecting section (41) to slide to an extreme position in a direction away from the cavity (311), and cause the corrugated section (42) to be in a contracted state, and the force exerted by the extension tendency of the pipe unit (4) after being heated is greater than the force exerted by the elastic members (10).

2. A basement fire protection ventilation structure according to claim 1, It is characterized in that The connecting sleeve (31) has two inclined guide surfaces (315) on the cavity wall of the cavity (311) close to the installation opening (313), the two guide surfaces (315) are respectively located on both sides of the installation opening (313), and one end of the guide surface (315) close to the connecting section (41) is an inclined upper end.

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