Automatic fireproof plugging device for pneumatic air pipe

Abstract

The utility model discloses an automatic fireproof plugging device for a pneumatic air pipe, which belongs to the technical field of building fireproof equipment and comprises a support, a fireproof plugging plate, a plugging mechanism for driving the fireproof plugging plate, a fixed air pipe, a movable air pipe and a movable air pipe telescopic mechanism for driving the movable air pipe. The diameter of the fixed air pipe is larger than that of the air pipe, the diameter of the movable air pipe is larger than that of the fixed air pipe, the fixed air pipe is sleeved with the movable air pipe, and the diameter of a funnel structure at the front end of the movable air pipe is smaller than that of the air pipe; the movable air pipe front-end funnel structure and the movable air pipe front-end funnel structure are sequentially in butt joint in the wall face air pipe in the flowing direction of air pressure in the air pipe, the fireproof blocking plate can be inserted into a disconnection gap between the movable air pipe front-end funnel structure and the air pipe, the movable air pipe stretches out and draws back to achieve tight connection and disconnection of a gap with a certain width of the air pipe front-end funnel structure, and the fireproof blocking plate is inserted into the gap to separate a building hole from the air pipe. Building holes are effectively blocked, and the fire-retardant separation effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of building fireproof equipment, and particularly relates to a pneumatic air pipe automatic fireproof plugging device. BACKGROUND

[0002] Holes are one of the common architectural features in various buildings or structures, especially for some buildings that need to frequently utilize tubular material conveying, such as pneumatic conveying, steel pipe conveying material production lines, etc. The existence of these holes provides convenience for conveying materials in space, especially using steel pipe pressure conveying materials, which greatly improves the production efficiency.

[0003] However, in terms of building fire prevention, the existence of building holes undoubtedly provides a convenient way for the spread of fire to adjacent space when a fire occurs. Therefore, the fireproof plugging of building holes is crucial to achieve the fire safety of buildings. Due to the different uses of building holes, there are great differences in the shape, size, position, and whether there are objects passing through, etc. The fireproof plugging of building holes without through objects is relatively easy, and the fireproof plugging of building holes with through objects has always been a technical difficulty, especially for steel pipe pressure conveying materials, such as pneumatic conveying, steel pipe conveying material production lines, etc. SUMMARY

[0004] To solve the fireproof plugging of building holes with steel pipe conveying materials, the present application provides a pneumatic air pipe automatic fireproof plugging device, and the specific technical solutions are as follows:

[0005] A pneumatic air pipe automatic fireproof plugging device, characterized in that it comprises a support, a fireproof plugging plate, a plugging mechanism for driving the fireproof plugging plate, a fixed air pipe, a movable air pipe, and a movable air pipe telescopic mechanism for driving the movable air pipe, the support is installed on the wall surface on the opposite side of the wind pressure flow direction in the building hole air pipe; the air pipe is connected to the automatic fireproof plugging device on both sides through the air pipe flange, and the fixed air pipe is sequentially fixed on the air pipe in the reverse direction of the wind pressure flow direction in the air pipe, with the diameter of the fixed air pipe being larger than that of the air pipe, the movable air pipe is sequentially fixed on the fixed air pipe in the reverse direction of the wind pressure flow direction in the air pipe, with the diameter of the movable air pipe being larger than that of the fixed air pipe, and the front end funnel structure of the movable air pipe is inserted into the air pipe, with the diameter of the front end funnel structure being smaller than that of the air pipe; the fireproof plugging plate can be inserted into the gap between the front end funnel structure of the movable air pipe and the air pipe; the side of the fireproof plugging plate facing the wall surface is provided with an annular overflow hole, and a fire-retardant bag belt is inlaid in the annular overflow hole.

[0006] Preferably, the air pipe, the fixed air pipe, and the movable air pipe are respectively provided with a fixed air pipe sealing plate and a movable air pipe sealing plate at the interface, and a sealing silica gel pad is arranged between the fixed air pipe sealing plate and the movable air pipe sealing plate.

[0007] Preferably, the mobile air pipe telescopic mechanism comprises mobile air pipe telescopic slides, mobile air pipe telescopic slide blocks, a mobile air pipe telescopic slide block fixing plate and mobile air pipe telescopic push rods, the mobile air pipe telescopic mechanism supports the mobile air pipe through two groups of mobile air pipe telescopic slides arranged on the bottom plate and mobile air pipe telescopic slide blocks in sliding cooperation with the mobile air pipe telescopic slides, and the two mobile air pipe telescopic push rods are arranged diagonally at the lower left side and the upper right side, the front ends of the two mobile air pipe telescopic push rods are fixed to the mobile air pipe sealing plates facing the wall surface, and the rear ends of the two mobile air pipe telescopic push rods are fixed to the bottom plate away from the wall surface.

[0008] Preferably, the bottom plate is provided with a mobile air pipe retraction to position travel switch at the limit position of the mobile air pipe telescopic push rod, the mobile air pipe retraction to position travel switch is fixed to the mobile air pipe retraction to position travel switch fixing plate and the bottom plate.

[0009] Preferably, the sealing mechanism comprises a fireproof sealing plate push rod, a fireproof sealing plate push rod front end fixing element arranged at the front end of the fireproof sealing plate push rod and a fireproof sealing plate push rod rear end fixing element arranged at the rear end of the fireproof sealing plate push rod, and the left side fixing plate of the sealing mechanism is provided with a fireproof sealing plate slide rail, and the fireproof sealing plate facing the fire-facing surface side is connected to the fireproof sealing plate through a fireproof sealing plate slide block and can be inserted into the gap between the mobile air pipe front end funnel structure and the air pipe.

[0010] Preferably, the left side fixing plate is provided with a fireproof sealing plate closing to position sensor and a fireproof sealing plate opening travel switch at the limit position of the fireproof sealing plate extension and the limit position of the fireproof sealing plate retraction, respectively.

[0011] Preferably, the fireproof sealing plate is inlaid with a ceramic fiber plate and rock wool.

[0012] The utility model has the following beneficial effects:

[0013] The utility model discloses a kind of automatic fireproof sealing devices, when fire occurs, the front end funnel structure of mobile air pipe is connected with air pipe tightly through the telescopic movement of mobile air pipe, and the gap of a certain width is disconnected, fireproof sealing plate is inserted into the gap, building hole is separated with air pipe, ceramic fiber plate (paper, cotton) is wrapped around the air pipe around the junction of fireproof sealing plate and close to wall body and automatic fireproof sealing device, and it is integrated effectively to seal building hole, reach the effect of fire resistance and separation. BRIEF DESCRIPTION OF DRAWINGS

[0014] The drawings constituting a part of the utility model are used to provide further understanding to the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute undue limitation to the utility model.In the drawings:

[0015] Figure 1 The utility model provides the front view structure diagram of automatic fireproof sealing device opening state;

[0016] Figure 2 For Figure 1A-A direction cross-sectional structure schematic view;

[0017] Figure 3 The automatic fireproof plugging device provided by the utility model provides the plan view of the open state of the automatic fireproof plugging device;

[0018] Figure 4 The automatic fireproof plugging device provided by the utility model provides the front view structure diagram of the closed state of the automatic fireproof plugging device;

[0019] Figure 5 For Figure 4 B-B direction cross-sectional structure schematic view;

[0020] Figure 6 The automatic fireproof plugging device provided by the utility model provides the plan view of the closed state of the automatic fireproof plugging device;

[0021] Figure 7 The automatic fireproof plugging device provided by the utility model provides the three-dimensional structure schematic view of the air pipe open state in the automatic fireproof plugging device;

[0022] Figure 8 The automatic fireproof plugging device provided by the utility model provides the plan view of the air pipe open state in the automatic fireproof plugging device;

[0023] Figure 9 For Figure 8 C-C direction cross-sectional structure schematic view;

[0024] Figure 10 The automatic fireproof plugging device provided by the utility model provides the three-dimensional structure schematic view of the air pipe plugging state in the automatic fireproof plugging device;

[0025] Figure 11 The automatic fireproof plugging device provided by the utility model provides the plan view of the air pipe plugging state in the automatic fireproof plugging device;

[0026] Figure 12 For Figure 11 D-D direction cross-sectional structure schematic view;

[0027] Figure 13 The automatic fireproof plugging device provided by the utility model provides the fixed air pipe structure schematic view in the automatic fireproof plugging device;

[0028] Figure 14 The automatic fireproof plugging device provided by the utility model provides the movable air pipe structure schematic view in the automatic fireproof plugging device;

[0029] Figure 15 The automatic fireproof plugging device provided by the utility model provides the movable air pipe front end structure schematic view in the automatic fireproof plugging device;

[0030] Figure 16 For Figure 15 G-G direction cross-sectional structure schematic view;

[0031] Figure 17The utility model provides an automatic fire prevention plugging device, and the automatic fire prevention plugging device comprises a fixed air pipe and a movable air pipe.

[0032] Figure 18 For Figure 17 The side view of the automatic fire prevention plugging device is shown in the figure.

[0033] Figure 19 The utility model provides an automatic fire prevention plugging device, and the automatic fire prevention plugging device comprises a fixed air pipe and a movable air pipe.

[0034] Figure 20 The utility model provides an automatic fire prevention plugging device, and the automatic fire prevention plugging device comprises a fixed air pipe and a movable air pipe.

[0035] Among them, 10, support, 20, movable air pipe telescopic mechanism, 30, plugging mechanism, 40, bolt, 50, sealing silica gel pad,

[0036] 101, wall, 102, air pipe, 103, air pipe flange, 104, expansion bolt,

[0037] 201, fixed air pipe, 2011, bottom plate, 2012, fixed air pipe sealing plate,

[0038] 202, movable air pipe, 2021, movable air pipe front end, 2022, movable air pipe telescopic slide rail, 2023, movable air pipe telescopic sliding block, 20231, movable air pipe telescopic sliding block fixed plate, 2024, movable air pipe sealing plate, 2025, movable air pipe retraction to position travel switch, 20251, movable air pipe retraction to position travel switch fixed plate, 2026, optical axis fixed plate, 20261, optical axis, 20262, shaft sleeve, 2027, movable air pipe telescopic push rod, 20271, movable air pipe telescopic push rod front end fixing piece,

[0039] 20272, movable air pipe telescopic push rod rear end fixing piece, 2028, right side support screw rod,

[0040] 301, left side fixed plate, 3011, fire prevention plugging plate slide rail, 3012, fire prevention plugging plate sliding block, 3013, fire prevention plugging plate sliding block fixed plate, 3014, left side support plate,

[0041] 302, fire prevention plugging plate push rod, 3021, fire prevention plugging plate push rod front end fixing piece, 3022, fire prevention plugging plate push rod rear end fixing piece,

[0042] 303, fire prevention plugging plate opening travel switch, 3031, fire prevention plugging plate opening travel switch fixed plate, 3032, fire prevention plugging plate closing to position sensor, 3033, fire prevention plugging plate closing to position sensor fixed plate,

[0043] 304, right side fixed plate,

[0044] 305 firestop shutter; 3051 annular overflow hole; 3052 fire barrier tape; 3053 rock wool; 3054 ceramic fiber board. DETAILED DESCRIPTION

[0045] The embodiments of the present application are described in detail below with reference to the accompanying drawings, but the present application can be implemented by various different embodiments within the scope of the claims and coverage.

[0046] In the following description of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and "vertically" indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0047] In the following description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two components. For those skilled in the art, the specific meaning of the terms in the present application can be understood according to the specific circumstances.

[0048] In addition, in the following description of the present application, unless otherwise stated, the meaning of "a plurality of", "a plurality of groups", "a plurality of roots" is two or more.

[0049] Embodiments

[0050] As Figures 1-20As shown, the embodiment shows a kind of automatic fireproof plugging device of pneumatic duct, including: support 10, fireproof plugging plate 305, plugging mechanism 30 for driving fireproof plugging plate 305, fixed duct 201, mobile duct 202 and mobile duct telescopic mechanism 20 for driving mobile duct.The support 10 is installed on the wall surface of the reverse side of the wind pressure flow direction in building hole duct 102;Duct 102 is connected to the automatic fireproof plugging device on both sides by duct flange 103, and the fixed duct 201 installation structure includes bottom plate 2011 and fixed duct sealing plate 2012;According to the reverse direction of the wind pressure flow direction in duct 102, fixed duct 201 with diameter greater than the diameter of duct 102 is sleeved on duct 102, mobile duct 202 with diameter greater than the diameter of fixed duct 201 is sleeved on fixed duct 201, and the funnel structure of the front end 2021 of mobile duct is inserted into duct 102 with diameter less than the diameter of duct 102;According to the wind pressure flow direction in duct 102, it is in turn butted in the wall surface duct 102, and fireproof plugging plate 305 can be inserted into the gap between the funnel structure of the front end 2021 of mobile duct and duct 102;By telescoping of mobile duct 202, the funnel structure of the front end 2021 of mobile duct and duct 102 are tightly connected and disconnected with a certain width gap, fireproof plugging plate 305 is inserted into the gap, building hole and duct 102 are separated, fireproof plugging plate 305 and the surrounding duct 102 near the junction of wall body 101 and automatic fireproof plugging device are wrapped with ceramic fiber plate (paper, cotton) wall body 101, and are tightly connected and integrated to effectively block building hole, so as to achieve the effect of fire resistance and separation.

[0051] A support 10 is installed on the wall surface of the reverse side of the wind pressure flow direction in hole duct 102, and the automatic fireproof plugging device is installed on the support 10, and the automatic fireproof plugging device is connected to the fixed duct 201 on both sides by duct flange 103.

[0052] Mobile duct telescopic mechanism 20 includes mobile duct telescopic slide rail 2022, mobile duct telescopic slide block 2023, mobile duct telescopic slide block fixed plate 20231, mobile duct front end 2021 and mobile duct sealing plate 2024.Mobile duct telescopic mechanism 20 is provided with two groups of mobile duct telescopic slide rails 2022 on bottom plate 2011, and mobile duct 202 is lifted by mobile duct telescopic slide block 2023;According to the reverse direction of the wind pressure flow direction in duct 102, fixed duct 201 with diameter greater than the diameter of duct 102 is sleeved on duct 102, mobile duct 202 with diameter greater than the diameter of fixed duct 201 is sleeved on fixed duct 201, and the funnel structure of the front end 2021 of mobile duct is inserted into duct 102 with diameter less than the diameter of duct 102;According to the wind pressure flow direction in duct 102, it is in turn butted in the wall surface duct 102,

[0053] Two mobile wind pipe telescopic push rods 2027 are diagonally arranged at the lower left and the upper right, the front end is fixed to the mobile wind pipe sealing plate 2024 facing the wall, and the rear end is fixed to the bottom plate 2011 away from the wall. The bottom plate 2011 is provided with a mobile wind pipe retraction limit switch 2025 fixed to the mobile wind pipe retraction limit switch fixed plate 20251 and fixed to the bottom plate 2011 at the limit position of the mobile wind pipe telescopic push rod 2027;

[0054] The sealing mechanism 30 includes a fireproof sealing plate push rod 302, a fireproof sealing plate push rod front end fixed part 3021 arranged at the front end of the fireproof sealing plate push rod 302, and a fireproof sealing plate push rod rear end fixed part 3022 arranged at the rear end of the fireproof sealing plate push rod 302. The fireproof sealing plate push rod front end fixed part 3021 is hinged to the fireproof sealing plate 305, and the fireproof sealing plate push rod rear end fixed part 3022 is hinged to the left fixed plate 301.

[0055] The limit position of the fireproof sealing plate 305 extending out and the limit position of the fireproof sealing plate 305 retracting in are respectively provided with a fireproof sealing plate closing limit sensor 3032 and a fireproof sealing plate opening stroke switch 303 on the left fixed plate 301.

[0056] The bottom plate 2011 is connected with a light shaft 20261 at the right upper end of both sides and is provided with a shaft sleeve 20262, the shaft sleeve 102 is fixed to the sealing plate at the front end of the mobile wind pipe 2021, the left fixed plate 301 of the sealing mechanism 30 is provided with a fireproof sealing plate sliding rail 3011, the fireproof sealing plate 305 on the side facing the fire-facing surface is connected through a fireproof sealing plate sliding block 3012 and can be inserted into the gap between the funnel structure at the front end of the mobile wind pipe 2021 and the wind pipe 102, the annular overflow hole 3015 on the side of the fireproof sealing plate 305 facing the wall is matched with the shape of the gap between the wind pipe 102 and is larger than the wind pipe 102.

[0057] The fireproof sealing plate 305 is inlaid with a ceramic fiber plate 3054 and rock wool 3053, and a fire-retardant bale 3052 is inlaid in the annular overflow hole 3052. When the fire-retardant bale 3052 encounters fire, it expands and overflows to seal the operating gap between the fireproof sealing plate 305 and the wind pipe 102, which can achieve good heat insulation and fire resistance effect.

[0058] The wind pipe 102, the fixed wind pipe 201, and the mobile wind pipe 202 are respectively provided with a fixed wind pipe sealing plate 2012 and a mobile wind pipe sealing plate 2024 at the interface, and a sealing silica gel pad 50 is arranged between the sealing plates. The mobile wind pipe 20 is used to extend out and seal with the wind pipe 102 and the fixed wind pipe 201 to achieve air-tightness of the pipe internal pressure, so as to convey materials under the action of wind pressure flow direction.

[0059] The bottom plate 2011 is connected with a light shaft 20261 at the right upper end of both sides and is provided with a shaft sleeve 20262, the shaft sleeve 102 is fixed to the sealing plate at the front end of the mobile wind pipe 2021, and the stability of the upper end of the mobile wind pipe 202 is ensured.

[0060] The specific working process of the fireproof plugging device of the embodiment is as follows:

[0061] When the fire occurs, the smoke sensor, the temperature sensor or the personnel manually triggers the alarm switch, the automatic fire alarm control device is automatically started, or the personnel in the fire control room manually starts the automatic fireproof plugging device on one side of the building hole at the same time, the building hole is plugged to prevent the spread of fire. Specifically, two movable air pipes telescopic push rods 2027 are diagonally arranged on the left lower side and the right upper side to start to retract, the movable air pipe 202 sleeved on the fixed air pipe 201 retracts backward, the movable air pipe sealing plate 2024 fixed to the front end of the movable air pipe 2021 funnel structure and the movable air pipe sealing plate 2024 at the rear end of the movable air pipe 202 run backward and disengage at the same time, the bottom end of the movable air pipe 202 seated on the movable air pipe telescopic slider 2023 moves along the movable air pipe telescopic slide rail 2022 to the shaft sleeve 20262 connected to the right upper end of the optical shaft 20261 on both sides of the bottom plate 2011, and synchronously moves backward along the optical shaft 20261. When the movable air pipe 202 reaches the limit position and triggers the movable air pipe 202 retraction to the in-place travel switch, the two movable air pipe telescopic push rods 2027 stop working, the movable air pipe front end 2021 funnel structure is separated from the air pipe by a certain distance gap; at the same time, the fireproof plugging plate push rod 302 is extended and inserted into the gap between the movable air pipe front end 2021 funnel structure and the air pipe, the fireproof plugging plate 305 fixed to the fireproof plugging plate slider 3012 moves downward along the fireproof plugging plate slide rail 3011 on the left side fixed plate 301, and synchronously moves downward. When the fireproof plugging plate 305 reaches the limit position and triggers the fireproof plugging plate closing in-place sensor 3032, the fireproof plugging plate push rod 302 stops working. At this time, the fireproof plugging plate 305 inserted into the gap between the movable air pipe front end 2021 funnel structure and the air pipe completely seals the building hole, the fireproof plugging plate 305 is embedded with the fireproof bag belt 3052 in the annular overflow hole 3052, the fireproof bag belt 3052 expands and overflows when encountering fire to seal the running gap between the fireproof plugging plate 305 and the air pipe 102, which can achieve good heat insulation and fire resistance effect. The annular overflow hole 3015 on the wall surface side of the fireproof plugging plate 305 is matched with the gap shape between the air pipe 102 and the wall 101, and is larger than the hole sealing of the air pipe 102 and the wall 101.

[0062] When the fire alarm is lifted, the manual start, the start of the fireproof blocking plate push rod 302 is inserted into the gap between the funnel-shaped structure of the front end of the movable air pipe 2021 and the air pipe, and the fireproof blocking plate 305 is retracted upward. The fireproof blocking plate 305 fixed to the fireproof blocking plate sliding block 3012 is synchronously operated upward along the fireproof blocking plate sliding rail 3011 on the left side fixed plate 301. When the fireproof blocking plate 305 is operated to the limit position, the building hole is completely opened, and when the fireproof blocking plate opening to position sensor travel switch 303 is triggered, the fireproof blocking plate push rod 302 stops working. At this time, the fireproof blocking plate 305 inserted into the gap between the funnel-shaped structure of the front end of the movable air pipe 2021 and the air pipe completely opens the building hole, and two movable air pipe telescopic push rods 2027 are set diagonally at the lower left and the upper right to make the movable air pipe 202 sleeved on the fixed air pipe 201 extend forward. The front end fixed to the movable air pipe sealing plate 2024 facing the wall surface and the movable air pipe sealing plate 2024 at the rear end of the movable air pipe 202 are simultaneously operated and displaced forward to approach the bottom end of the movable air pipe 202 seated on the movable air pipe telescopic sliding block 2023, along the movable air pipe telescopic sliding rail 2022 and the right upper end connecting shaft sleeve 20262 of the optical shaft 20261 on both sides of the bottom plate 2011, and synchronously displaced forward along the optical shaft 20261. When the two movable air pipe telescopic push rods 2027 are set diagonally at the lower left and the upper right and completely extended to the limit, the two movable air pipe telescopic push rods 2027 stop working, and the movable air pipe sealing plate 2024 sleeved on the fixed air pipe 201 and the movable air pipe sealing plate 2024 at the rear end of the movable air pipe 202 are simultaneously and tightly connected with the fixed air pipe sealing plate 2012, which is connected in the air pipe and in a closed state, and the normal work is restored.

[0063] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A kind of automatic fireproof plugging device of pneumatic air pipe, it is characterized by, The application relates to an automatic fireproof blocking device, which comprises a support (10), a fireproof blocking plate (305), a blocking mechanism (30) for driving the fireproof blocking plate (305), a fixed air pipe (201), a movable air pipe (202) and a movable air pipe telescopic mechanism (20) for driving the movable air pipe, the support (10) is installed on the wall surface on the side opposite to the wind pressure flow direction of a building hole air pipe (102); the air pipe (102) is connected with the automatic fireproof blocking device on both sides through air pipe flanges (103), the fixed air pipe (201) with a diameter larger than that of the air pipe (102) is sequentially fixed on the air pipe (102) in the direction opposite to the wind pressure flow direction of the air pipe (102), the movable air pipe (202) with a diameter larger than that of the fixed air pipe (201) is sequentially fixed on the fixed air pipe (201), the funnel structure of the front end (2021) of the movable air pipe (202) with a diameter smaller than that of the air pipe (102) is inserted into the air pipe (102); the fireproof blocking plate (305) is sequentially and butt-jointed in the air pipe (102) on the wall surface in the direction of the wind pressure flow direction of the air pipe (102), the fireproof blocking plate (305) is provided with a ring-shaped overflow hole (3015) on the side facing the wall surface, and a fireproof bag (3052) is inlaid in the ring-shaped overflow hole (3015). The air pipe (102), the fixed air pipe (201) and the movable air pipe (202) are respectively provided with a fixed air pipe sealing plate (2012) and a movable air pipe sealing plate (2024), and a sealing silica gel pad (50) is arranged between the fixed air pipe sealing plate (2012) and the movable air pipe sealing plate (2024).

2. The automatic pneumatic duct fireproof plugging device according to claim 1, characterized in that, The movable air pipe telescopic mechanism (20) comprises a movable air pipe telescopic sliding rail (2022), a movable air pipe telescopic sliding block (2023), a movable air pipe telescopic sliding block fixing plate (20231) and a movable air pipe telescopic push rod (2027), the movable air pipe telescopic mechanism (20) supports the movable air pipe (202) through two groups of movable air pipe telescopic sliding rails (2022) arranged on a bottom plate (2011) and movable air pipe telescopic sliding blocks (2023) in sliding cooperation with the movable air pipe telescopic sliding rails (2022), two movable air pipe telescopic push rods (2027) are diagonally arranged on the left lower side and the right upper side, the front ends of the two movable air pipe telescopic push rods (2027) are fixed to the movable air pipe sealing plate (2024) facing the wall surface, and the rear ends of the two movable air pipe telescopic push rods (2027) are fixed to the bottom plate (2011) away from the wall surface.

3. The automatic pneumatic duct fireproof plugging device according to claim 1, characterized in that, The bottom plate (2011) is provided with a movable air pipe retraction to position travel switch (2025) at the limit position of the movable air pipe telescopic push rod (2027), the movable air pipe retraction to position travel switch (2025) is fixed to a movable air pipe retraction to position travel switch fixing plate (20251) and the bottom plate (2011).

4. The automatic pneumatic duct fireproof plugging device according to claim 3, characterized in that, ​ 5. The automatic pneumatic duct fireproof plugging device according to claim 1, characterized in that, The blocking mechanism (30) comprises a fireproof blocking plate push rod (302), a fireproof blocking plate push rod front end fixing piece (3021) arranged at the front end of the fireproof blocking plate push rod (302), and a fireproof blocking plate push rod rear end fixing piece (3022) arranged at the rear end of the fireproof blocking plate push rod (302); the left side fixed plate (301) of the blocking mechanism (30) is provided with a fireproof blocking plate sliding rail (3011), and a fireproof blocking plate (305) on the side facing the fire-facing surface is connected through a fireproof blocking plate sliding block (3012) and can be inserted into the gap between the funnel structure of the front end (2021) of the movable air pipe and the air pipe (102).

6. The automatic pneumatic duct fireproof plugging device according to claim 5, characterized in that, The extreme position of the fireproof blocking plate (305) extending out and the extreme position of the fireproof blocking plate (305) retracting in are respectively provided with a fireproof blocking plate closing in-place sensor (3032) and a fireproof blocking plate opening travel switch (303) on the left side fixed plate (301).

7. The automatic pneumatic duct fireproof plugging device according to claim 6, characterized in that, The fireproof blocking plate (305) is inlaid with a ceramic fiber plate (3054) and rock wool (3053).

Images