Fireproof mechanism for wall opening

Abstract

The utility model discloses a wall hole fireproof mechanism. The wall hole fireproof mechanism comprises a base arranged at a hole of a wall and an iris switch assembly. A communicating hole corresponding to the hole opening is formed in the base; the iris switch assembly is arranged on the base and comprises a plurality of blocking pieces and an annular turntable; the turntable is rotatably arranged on the base; the multiple blocking pieces are distributed in the circumferential direction of the communicating hole and movably connected with the rotating disc and the base correspondingly. The turntable comprises a first rotating position and a second rotating position; when the turntable is located at the first rotating position, the plurality of blocking pieces seal the communicating hole so as to block the hole; and when the rotating disc is located at the second rotating position, gaps exist between the multiple blocking pieces, and the opening degree of the communicating hole is larger than zero. The opening in the wall can be flexibly and rapidly opened and closed, and the fireproof requirement of the nuclear power plant is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of auxiliary equipment of nuclear power plants, and in particular to a wall hole fireproof mechanism. BACKGROUND

[0002] It is a common phenomenon in nuclear power plants to reserve a cable passage in a wall, that is, a hole for passing cables is reserved in the wall, and the hole can be plugged in daily situations. When power is needed during maintenance or overhaul, the hole in the wall is opened, and the cable can be directly passed through the reserved hole, thereby avoiding the need for temporary hole opening in the later stage.

[0003] At present, the sealing member commonly used by nuclear power plants for the cable-reserved hole in the wall still has many problems. For example, the sealing member is not flexible enough to disassemble and assemble, and has poor reliability. For another example, when the hole is opened to pass the cable, the cable cannot be properly constrained, which can easily lead to the entry of foreign matter into the plant and the sliding of the cable. For another example, the structure of the sealing member is difficult to achieve rapid plugging of the hole in the wall, and it is difficult to meet the requirements of the nuclear power plant on the fireproof performance. CONTENT OF THE INVENTION

[0004] The technical problem to be solved by the present application is to provide a wall hole fireproof mechanism.

[0005] The technical solution adopted by the present application to solve the technical problem is:

[0006] A wall hole fireproof mechanism is constructed, comprising:

[0007] A base is arranged at the hole of the wall, and a communication hole corresponding to the hole is arranged on the base;

[0008] An iris switch assembly is arranged on the base and comprises a plurality of sealing members and a ring-shaped turntable. The turntable is rotatably arranged on the base. The inner space of the turntable corresponds to the communication hole. The plurality of sealing members are distributed along the circumference of the communication hole and are respectively movably connected with the turntable and the base. The turntable comprises a first rotation position and a second rotation position.

[0009] When the turntable is located at the first rotation position, the plurality of sealing members close the communication hole to seal the hole. When the turntable is located at the second rotation position, there is a gap between the plurality of sealing members, and the opening degree of the communication hole is greater than zero.

[0010] In some embodiments, the base comprises a main body and a limiting plate; the main body comprises a sidewall and a ring-shaped bottom wall, the sidewall surrounds at least part of the outer periphery of the bottom wall; the limiting plate is arranged on the sidewall, and the iris switch assembly is limited between the bottom wall and the limiting plate.

[0011] In some embodiments, the base further comprises a wall-penetrating piece penetrating the hole, the wall-penetrating piece is in a cylindrical shape, one end of the wall-penetrating piece is connected to the inner periphery of the bottom wall, and the other end of the wall-penetrating piece extends away from the sidewall in a direction away from the bottom wall.

[0012] In some embodiments, the inner periphery of the wall-penetrating piece is provided with a high-temperature expansion fireproof ring.

[0013] In some embodiments, the wall hole fireproof mechanism further comprises a cover plate arranged on the base and capable of being opened to cover the base; the iris switch assembly is located between the base and the cover plate.

[0014] In some embodiments, the plurality of blocking pieces are respectively arranged between the rotating disc and the base, each of the blocking pieces comprises a blocking piece, a rotating shaft and a moving piece; the rotating shaft and the moving piece are respectively arranged on opposite sides in the thickness direction of the blocking piece, the rotating shaft is movably connected to the base, and the moving piece is movably connected to the rotating disc.

[0015] In some embodiments, the plurality of blocking pieces are uniformly and adjacently arranged in the circumferential direction, each of the blocking pieces is provided with a connecting groove and a connecting protrusion on opposite sides in the connecting direction; the connecting protrusion of each of the blocking pieces is movably arranged in the connecting groove of the blocking piece adjacent thereto.

[0016] In some embodiments, a plurality of first guide structures are arranged in the circumferential direction on the base, the rotating shaft is movably arranged in the first guide structure; a plurality of second guide structures are arranged in the circumferential direction on the rotating disc, and the moving piece is movably arranged in the second guide structure.

[0017] In some embodiments, the plurality of first guide structures respectively extend in the radial direction of the base; the plurality of second guide structures respectively extend in the same angle on the same side of the radial direction of the base.

[0018] In some embodiments, the base defines a driving cavity, and the iris switch assembly further comprises a driving piece, the driving piece is rotatably arranged in the driving cavity and is in meshing connection with the rotating disc.

[0019] Implementing the present application at least includes the following beneficial effects:

[0020] The wall hole fireproof mechanism can realize the opening and closing of the hole in the wall, and the repeated disassembly and assembly of the wall hole fireproof mechanism is not needed, and the operation process in the hole closing or opening process is reduced. Through the relative movement of the sealing piece, the rotating disc and the base, flexible control of the opening size of the communication hole can be realized. When the hole is not used, it can be quickly and flexibly closed to meet the fireproof requirements of the nuclear power plant. Through the control of the opening size of the communication hole, the control of the shielding degree of the hole in the wall can be realized, the effect of cable positioning can be achieved, the cable is constrained, and the relative movement of the cable during the period of passing through the hole is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0021] The application will be further described below in combination with the drawings and embodiments. In the drawings:

[0022] Figure 1 is a structural schematic view of a wall hole fireproof mechanism according to an embodiment of the application;

[0023] Figure 2 is a structural schematic view of a wall hole fireproof mechanism according to an embodiment of the application; Figure 1

[0024] Figure 3 Figure 1

[0025] Figure 4 Figure 3

[0026] Figure 5 Figure 3

[0027] Figure 6 Figure 3

[0028] Figure 7 Figure 6

[0029] Figure 8 Figure 1

[0030] Figure 9 Figure 1

[0031] Figure 10 Figure 1 ​​​​​​​​​​​​​​​​​ Detailed Implementation

[0032] To provide a clearer understanding of the technical features, objectives, and effects of this application, the specific embodiments of this application are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "bottom," "inner," "further," and "outer" are based on the orientations or positional relationships shown in some of the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or element referred to must have a specific orientation; therefore, they should not be construed as limitations on this application.

[0033] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "linking," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0034] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0035] like Figures 1 to 3 As shown, this application constructs a fireproof mechanism 1 for wall openings, which can seal pre-drilled openings in the wall for cable installation. The fireproof mechanism 1 includes a base 10 and an iris switch assembly 30. The base 10 can be installed onto the wall. The iris switch assembly 30 is disposed on the base 10 and is used to open and seal openings in the wall.

[0036] The base 10 can be provided with a communication hole 111 corresponding to the hole. The iris switch assembly 30 can include a rotating disc 31 and a plurality of blocking pieces 32. The rotating disc 31 is annular and rotatably arranged on the base 10. The annular inner space of the rotating disc 31 can correspond to the communication hole 111 and the hole. The plurality of blocking pieces 32 are distributed along the circumference of the communication hole 111 and are movably connected with the rotating disc 31 and the base 10. By rotating the rotating disc 31, the relative movement between the plurality of blocking pieces 32 and the rotating disc 31 and the base 10 can be realized, and the opening and closing of the communication hole 111 can be realized.

[0037] The rotating disc 31 can include a first rotating position and a second rotating position.

[0038] As shown in Figure 8 , when the rotating disc 31 is in the first rotating position, the plurality of blocking pieces 32 close the communication hole 111 and block the hole. Figure 9 and Figure 10 , when the rotating disc 31 is in the second rotating position, there is a gap between the plurality of blocking pieces 32, the opening degree of the communication hole 111 is greater than zero, and the hole is in a conductive state.

[0039] It should be understood that the "opening degree of the communication hole 111 is greater than zero" can be understood as that at least part of the hole of the communication hole 111 is not blocked by the blocking piece 32, and the spaces on both sides of the wall can be connected through the hole and the unblocked hole.

[0040] It should be understood that the gap between the plurality of blocking pieces 32 can be different following the relative movement of the blocking piece 32 and the rotating disc 31 and the base 10. That is, the opening degree of the communication hole 111 can also be different under the blocking of the blocking piece 32. Therefore, as shown in Figure 9 and Figure 10 , the second rotating position of the rotating disc 31 is not limited to a unique position.

[0041] By setting the iris switch assembly 30, the relative movement of the blocking piece 32 and the rotating disc 31 and the base 10 can be realized by operating the rotation of the rotating disc 31, the hole of the wall can be realized, and the repeated disassembly of the wall hole fireproof mechanism 1 is not required, and the operation process in the hole closing or conducting process is reduced.

[0042] By setting the relative movement of the blocking piece 32 and the rotating disc 31 and the base 10, the opening degree of the communication hole 111 can also be flexibly controlled, and the quick and flexible switching between the hole conducting and closing can be realized. When the hole is not needed to be used, the hole can be quickly closed to meet the fireproof requirements of the nuclear power plant.

[0043] By controlling the rotation angle of the rotating disc 31, the opening size of the communication hole 111 can be controlled, and the control of the shielding degree of the hole in the wall body can be realized. During the period of threading the cable in the hole, by reducing the opening size of the communication hole 111, the size of the opening is matched with the cable, which can play a limiting effect on the cable, realize the constraint of the cable, and avoid the relative movement of the cable during the threading period of the hole. By constraining the cable, the remaining gap between the cable and the hole is also reduced, and the entry of foreign matters into the factory building is reduced or even avoided.

[0044] As shown in Figure 2 some embodiments, the base 10 can include a main body 11 and a limiting plate 12. The main body 11 is used to carry other components and fix the wall hole fireproof mechanism 1 on the wall body. The limiting plate 12 is arranged on the main body 11 and is used to limit the arrangement position of the iris switch assembly 30 on the base 10.

[0045] Referring to Figure 3 and Figure 4 together, the main body 11 can include a bottom wall and a side wall. The bottom wall is annular, and the annular ring space can be regarded as the communication hole 111. One end of the side wall is arranged on at least part of the outer periphery of the bottom wall. The limiting plate 12 is annular and arranged on the side wall. The iris switch assembly 30 is limited between the bottom wall and the limiting plate 12.

[0046] It should be understood that the connecting relationship between the limiting plate 12 and the main body 11 can be achieved by arranging a connecting lug plate on the side wall of the main body 11 and arranging a connecting structure between the connecting lug plate and the limiting plate 12 to achieve the detachable connection of the limiting plate 12 and the main body 11. The limiting plate 12 and the main body 11 can also be fixed to each other. After assembling the iris switch assembly 30, the limiting plate 12 is fixed to the main body 11 by welding, gluing or the like to achieve the connection of the two. This is not specifically limited.

[0047] It should be understood that in the embodiment shown in Figures 2 to 5 , the bottom wall of the main body 11, the limiting plate 12, the rotating disc 31 and the like are all taken as examples of circular rings. However, the “annular” mentioned in the present application can also be rectangular annular, polygonal annular, irregular annular and the like. Correspondingly, the communication hole 111 can be a circular hole, a rectangular hole, a polygonal hole, an irregular hole and the like. This is not specifically limited.

[0048] It is now defined that the rotation axis direction of the rotating disc 31 during rotation is the axial direction of the wall hole fireproof mechanism 1, and the bottom wall of the main body 11, the limiting plate 12 and the rotating disc 31 are all perpendicular to the axial direction.

[0049] In Figure 2In the specific embodiment shown, the extension direction of axis M is the axial direction of the fireproof mechanism 1 for the wall opening. The bottom wall of the main body 11 and the limiting plate 12 are both arranged perpendicular to axis M, and the two are parallel and spaced apart along the direction of axis M. The iris switch assembly 30 is disposed between the bottom wall of the main body 11 and the limiting plate 12 in the extension direction of axis M.

[0050] like Figure 2 As shown, in some embodiments, the outer periphery of the limiting plate 12 is adapted to the inner periphery of the side wall of the main body 11, and the inner periphery is adapted to the inner periphery of the turntable 31.

[0051] By limiting the dimensions of the inner and outer circumferences of the limiting plate 12, the degree of obstruction by the limiting plate 12 can be effectively limited, preventing the inner circumference of the limiting plate 12 from being too small and obstructing the connecting hole 111, thus ensuring the maximum opening of the connecting hole 111; it also prevents the inner circumference of the limiting plate 12 from being too large and exposing the connection position between the turntable 31 and the sealing member 32, thereby increasing the risk of foreign objects entering.

[0052] It should be understood that the shape of the limiting plate 12, and / or the bottom wall of the main body 11, and / or the turntable 31 can be the same or different, and no specific limitation is made here.

[0053] For example, the bottom wall of the main body 11 can be irregular in shape, the outer contour of the turntable 31 can be circular, and the outer contour of the limiting plate 12 can be rectangular, etc.

[0054] In some other alternative embodiments, the inner circumference of the limiting plate 12 may also be slightly smaller than the inner circumference of the turntable 31. The inner circumference of the limiting plate 12 may also be slightly smaller than the inner circumference of the sidewall of the body 11.

[0055] In some other alternative embodiments, the limiting plate 12 may also be a non-circular plate structure, detachably covering the other end of the side wall, thereby covering the iris switch assembly 30 within the space constructed by the limiting plate 12, the bottom wall, and the side wall, so as to function as a cover plate.

[0056] In some other alternative embodiments, the limiting plate 12 may also be non-plate-shaped. For example, the limiting effect on the iris switch assembly 30 can also be achieved by arranging multiple limiting blocks at intervals along the circumferential direction of the sidewall of the body 11.

[0057] like Figure 4 As shown, in some embodiments, the main body 11 further includes a mounting portion 112, which is connected to the outer periphery of the bottom wall and located on the outer side of the side wall for connection with the wall.

[0058] For example, the mounting part 112 can be in the shape of an ear plate and have a through hole. By inserting screws or other connecting parts into the wall through the through hole, the base 10 can be installed on the wall.

[0059] Again as Figure 2 shown, in some embodiments, the base 10 can further comprise a wall penetrating piece 13. Wherein the wall penetrating piece 13 is arranged on the main body 11 for penetrating into the hole, so as to improve the fixing effect of the base 10 on the wall.

[0060] Specifically, the wall penetrating piece 13 can be arranged in a tubular shape with both ends penetrating through, one end of which can be connected to the inner periphery of the bottom wall of the main body 11, and the other end extends away from the side wall of the main body 11 towards the bottom wall of the main body 11. That is, in Figure 2 the embodiment shown, the wall penetrating piece 13 and the side wall of the main body 11 are respectively located on the two opposite sides of the bottom wall of the main body 11 in the extending direction of the axis M.

[0061] The wall penetrating piece 13 is arranged in such a position that when the base 10 is installed on the wall, the main body 11 (of the bottom wall) can be arranged in close contact with the wall surface of the wall, and the wall penetrating piece 13 penetrates into the hole.

[0062] It should be understood that in order to ensure the firmness of the base 10 arranged on the wall, the shape and size of the wall penetrating piece 13 can be adapted to the shape of the hole. Therefore, the shape and specific size of the wall penetrating piece 13 can be the same as or different from the hole, which is not limited in the present application. The same applies to the communication hole 111, which is not described in detail here.

[0063] The size of the wall penetrating piece 13 in the direction of the axis M can be flexibly set according to the thickness of the wall. The size can be adapted to the thickness of the wall, or slightly smaller or larger than the thickness of the wall, which is not limited here.

[0064] As Figure 2 shown, in some embodiments, the end of the wall penetrating piece 13 connected to the main body 11 can slightly penetrate the bottom wall of the main body 11 and be located on one side of the side wall. Such arrangement can facilitate the connection of the wall penetrating piece 13 and the main body 11, such as welding, etc.

[0065] In other some alternative embodiments, the wall penetrating piece 13 can also be connected to the main body 11 by means of bolt connection, one-piece forming, etc.

[0066] In some embodiments, the wall hole fireproof mechanism 1 is provided with a fireproof ring 40 for fireproof effect. When a fire occurs, the fireproof ring 40 can expand rapidly under heat and block the hole in a short time, regardless of whether the iris switch assembly 30 is in the closed position at this time, the hole can be closed to prevent the spread of fire.

[0067] It should be understood that the fireproof ring 40 can be made of existing materials that expand rapidly under heat.

[0068] As shown in Figure 2 some embodiments, a plurality of blocking pieces 32 are respectively arranged between the rotating disc 31 and the base 10.

[0069] Referring to Figure 6 and Figure 7 together, each blocking piece 32 comprises a blocking sheet 321, a rotating shaft 322 and a moving piece 323. The blocking sheet 321 is used to block the communication hole 111. The rotating shaft 322 and the moving piece 323 are respectively arranged on opposite sides of the thickness direction of the blocking sheet 321. The rotating shaft 322 corresponds to the bottom wall of the main body 11 of the base 10 and is movably connected to the bottom wall. The moving piece 323 corresponds to the rotating disc 31 and is movably connected to the rotating disc 31.

[0070] By arranging the rotating shaft 322 and the moving piece 323, the relative movement of the rotating disc 31 and the blocking sheet 321, and the relative movement of the blocking sheet 321 and the base 10 can be realized respectively. Further, by driving the rotating disc 31 to rotate, the plurality of blocking sheets 321 can be driven to move synchronously, and the movement angle and the movement amplitude of the blocking sheets 321 are limited by the existence of the base 10, so that the plurality of blocking sheets 321 can move synchronously along a predetermined path and realize the opening position and the closed position of the iris switch assembly 30 by mutual cooperation.

[0071] As shown in Figure 6 some embodiments, the plurality of blocking sheets 321 are uniformly and adjacently connected on the rotating disc 31 and the base 10 along the circumference of the axis M. Each blocking sheet 321 is provided with a connecting groove 3211 and a connecting protrusion 3212 on opposite sides in the connection direction. The connecting protrusion 3212 of each blocking sheet 321 is movably arranged in the connecting groove 3211 of the blocking sheet 321 adjacent thereto.

[0072] By arranging the connecting groove 3211 and the connecting protrusion 3212 on the blocking sheet 321, the synchronism and the stability of the relative position of the plurality of blocking sheets 321 during movement can be further improved. Each blocking sheet 321 can move relative to each other in a plane perpendicular to the axis M to realize the opening and closing of the communication hole 111, and can be fixed relative to each other in the extension direction of the axis M to reduce the stress on each component, improve the stability of synchronous movement, and reduce the risk of damage.

[0073] The connecting groove 3211 can be longitudinally arranged, and the length thereof is greater than the size of the connecting protrusion 3212 to ensure that the connecting protrusion 3212 has sufficient movement stroke therein.

[0074] It should be understood that the "connection direction" refers to the direction in which the plurality of blocking sheets 321 are connected to each other, and the "connection direction" is perpendicular to the axis M. Figure 6In the illustrated embodiment, the width direction of the blocking piece 321 can be understood. Figures 8 to 10 In the illustrated embodiment, the circumferential direction of the axis M can also be understood.

[0075] As Figure 4 In some embodiments, as shown, the base 10 is provided with a plurality of first guide structures 115 in the circumferential direction, corresponding to the plurality of blocking pieces 32 respectively. The rotating shaft 322 of the blocking piece 32 is movably arranged in the first guide structure 115, realizing the movable connection of the blocking piece 32 and the base 10.

[0076] Specifically, the first guide structure 115 is arranged on the bottom wall of the main body 11 and extends in the radial direction thereof.

[0077] It should be understood that when the bottom wall of the main body 11 of the base 10 is not a circular ring, the circumferential direction of the base 10 can be understood as the circumferential direction of the base 10 centered on the axis M, and the radial direction can be understood as the radial direction of the base 10 centered on the axis M.

[0078] As Figure 5 As shown, the rotating disc 31 is provided with a plurality of second guide structures 311 in the circumferential direction, corresponding to the plurality of blocking pieces 32 respectively. The moving piece 323 of the blocking piece 32 is movably arranged in the second guide structure 311, realizing the movable connection of the blocking piece 32 and the rotating disc 31.

[0079] Specifically, the second guide structure 311 extends obliquely at the same angle on the same side of the radial direction of the base 10. That is, the second guide structure 311 is arranged obliquely on the rotating disc 31, and the extension direction of the second guide structure 311 has an angle with the radial direction of the rotating disc 31, and the angle of each second guide structure 311 with the radial direction of the rotating disc 31 is the same. One end of the second guide structure 311 is close to the inner periphery of the rotating disc 31, and the other end extends obliquely to the outer periphery of the rotating disc 31.

[0080] The rotating shaft 322 has a first position and a second position on the first guide structure 115, the moving piece 323 has a third position and a fourth position on the second guide structure 311, and the connecting protrusion 3212 of the blocking piece 32 has a fifth position and a sixth position in the connecting groove 3211 of the other adjacent blocking piece 32.

[0081] When the rotating disc 31 rotates to a first rotating position, the rotating shaft 322 moves to the first position on the first guide structure 115, the moving piece 323 moves to the third position on the second guide structure 311, and the connecting protrusion 3212 of each blocking piece 32 moves to the fifth position in the connecting groove 3211 of the other blocking piece 32 adjacent thereto. At this time, each blocking piece 32 closes the communication hole 111, and the iris switch assembly 30 is in the closed position.

[0082] When the turntable 31 rotates to the second rotation position, the rotating shaft 322 moves to the second position on the first guide structure 115, the moving member 323 moves to the fourth position on the second guide structure 311, and the connecting protrusion 3212 of each sealing member 32 moves to the sixth position within the connecting groove 3211 of the adjacent sealing member 32. At this time, a gap is generated between each sealing member 32, making the opening of the connecting hole 111 greater than zero, and the iris switch assembly 30 is in the open position.

[0083] It should be understood that since the opening of the connecting hole 111 is not unique (greater than zero), the second rotation position of the turntable 31 is also not unique. Therefore, the second position, the fourth position, the sixth position, and the second rotation angle are also not unique.

[0084] For example Figure 6 As shown, in some embodiments, the baffle 321 is generally quadrilateral. Its four sides are arranged in pairs, forming two groups. The two adjacent sides in each group are of the same length, so that the baffle 321 is arranged as a quadrilateral with two diagonals perpendicular to each other. It has two opposite quadrilateral sides.

[0085] We define one pair of adjacent sides as the first side and the second side, and another pair of adjacent sides as the third side and the fourth side. The two opposite sides of the quadrilateral are the first side and the second side.

[0086] Then in Figure 6 In the illustrated embodiment, the lengths of the first and second sides are less than the lengths of the third and fourth sides, and the connecting groove 3211 and the connecting protrusion 3212 are respectively disposed on the third and fourth sides. The rotating shaft 322 and the moving member 323 are respectively disposed on the first and second sides.

[0087] In some embodiments, the rotating shaft 322 is located on the first side at the axial position of the baffle 321, and the moving member 323 is also located on the second side at the axial position of the baffle 321. The position of the rotating shaft 322 on the axial direction is on the side of the moving member 323 closest to both the first and second sides.

[0088] In some other alternative embodiments, the baffle 321 may also be in other shapes such as rhombus, arc, or irregular. The connecting groove 3211 and the connecting protrusion 3212 can be flexibly adjusted to follow the shape of the baffle 321 and the connection relationship between adjacent sealing members 32.

[0089] exist Figure 3 In the illustrated embodiment, there are nine of each of the sealing member 32, the first guide structure 115, and the second guide structure 311. Both the first guide structure 115 and the second guide structure 311 are longitudinally elongated straight through holes.

[0090] It should be understood that the quantities of the blocking member 32, the first guiding structure 115 and the second guiding structure 311 can be adjusted flexibly. The setting position and shape of the first guiding structure 115 on the base 10 and the setting position and shape of the second guiding structure 311 on the turntable 31 can also be adjusted flexibly according to the shape, size, quantity, etc. of the baffle 321. For example, one of the first guiding structure 115 and / or the second guiding structure 311 can be set as a shaft hole, and the other can be set as a longitudinally long arc-shaped through hole, etc.

[0091] In some other alternative embodiments, the first guiding structure 115 and / or the second guiding structure 311 can also be set as structures such as guiding grooves and guiding protrusions. When it is set as a guiding protrusion, a slot hole structure can be correspondingly set on the baffle 321 to achieve the guiding effect.

[0092] Refer to together Figure 6 and Figure 7 , in some embodiments, the rotating shaft 322 is a circular shaft, and the cross-section perpendicular to its axis can be approximately in the shape of a dry character. Through the structures belonging to the two horizontal sides of the dry character, the limit on the first guiding structure 115 of the base 10 can be achieved.

[0093] By setting it as a circular shaft shape, the rotation of the rotating shaft 322 within the first guiding structure 115 can be achieved, so as to facilitate the relative movement between adjacent blocking members 32. That is, the rotating shaft 322 is both movably arranged within the first guiding structure 115 and rotatable relative to the first guiding structure 115.

[0094] In some embodiments, the moving member 323 is generally in the shape of a cross block. One end of the vertical part of its cross shape is connected to the baffle 321, and the other end is movably connected within the second guiding structure 311. The horizontal parts of its cross shape can respectively abut against the base 10 (specifically, the bottom wall of the main body 11) and the end face of the turntable 31.

[0095] It should be understood that the connections of the rotating shaft 322 and the moving member 323 to the baffle 321 can be achieved in various ways. For example, their connections can be achieved through processes such as welding and integral molding, or the relative fixation of the two can be achieved by setting outwardly protruding limiting structures. It can also be achieved by setting corresponding mounting holes on the baffle 321 and inserting them into the mounting holes through interference fit or welding, etc. for positioning connection. Specific limitations are not made here.

[0096] In some other optional embodiments, the structure of the rotating shaft 322 and the moving piece 323 can be flexibly adjusted according to the structure of the first guide structure 115 and the second guide structure 311. For example, the moving piece 323 can also be provided in a circular shaft shape, etc.

[0097] As shown in Figure 2 some embodiments, the side surface of the blocking piece 321 close to the bottom wall of the main body 11 can be in contact with the end of the wall penetrating piece 13 to achieve a better sealing effect.

[0098] As shown in Figure 3 some embodiments, the iris switch assembly 30 further includes a driving piece 33 connected with the rotating disc 31 for driving the rotating disc 31 to rotate back and forth between the first rotating position and the second rotating position.

[0099] Specifically, the driving piece 33 can be provided in a worm shape structure, at least part of the rod section is provided with a thread, and a part of the outer periphery of the rotating disc 31 is correspondingly provided with a connecting tooth, and the thread is in meshing connection with the connecting tooth.

[0100] In use, by rotating the driving piece 33 back and forth, the rotating disc 31 can be driven to rotate back and forth under meshing transmission, thereby realizing the back and forth conversion of the iris switch assembly 30 between the opening position and the sealing position.

[0101] Such a setting mode simplifies the operation difficulty of the wall hole fireproof mechanism 1, and only needs to rotate the driving piece 33 to quickly open and close the hole. In the event of a fire or other accident, the hole can be quickly closed to prevent the spread of the fire. At the same time, the worm-shaped driving piece 33 is manually operated without the need for electric drive, has high reliability, can flexibly control the size of the opening degree of the communication hole 111 according to the thickness of the cable, and can also avoid the potential problem that the drive cannot be performed in the case of power failure.

[0102] In some other optional embodiments, the driving piece 33 can also be provided as an electric drive structure such as a motor, and the output shaft of the motor is connected with the rotating disc 31 to drive the rotating disc 31, etc.

[0103] As shown in Figure 4 some embodiments, the base 10 further includes a driving part 14 which is defined with a driving cavity 141 and is in communication with the space of the main body 11 for accommodating the iris switch assembly 30, for accommodating the driving piece 33.

[0104] The driving part 14 is located on one side of the main body 11 and comprises a bottom wall and a side wall. The bottom wall of the driving part 14 is connected with the bottom wall of the main body 11, and the two form the bottom wall of the base 10 together. The side wall of the main body 11 is arranged on the part of the bottom wall of the main body 11 which is not connected with the bottom wall of the driving part 14, and the side wall of the driving part 14 is arranged on the part of the bottom wall of the driving part 14 which is not connected with the bottom wall of the main body 11. The two side walls are connected end to end and form the side wall of the base 10 in a cylindrical shape.

[0105] It should be understood that the driving part 14 and the main body 11 can be integrally formed or connected with each other through bolts or other connecting members, which is not limited here.

[0106] As shown in Figure 1 some embodiments, the base 10 can further comprise a cover plate 20 arranged on the base 10 for openably covering the base 10, and the iris switch assembly 30 is located between the base 10 and the cover plate 20. By arranging the cover plate 20, when the wall opening fireproof mechanism 1 (the iris switch assembly 30 is in the closed position) is not used, the base 10 can be covered to be relatively closed, and the base 10 cooperates to form a complete shell, which further protects the iris switch assembly 30 inside and avoids foreign matters from entering and damaging the iris switch assembly 30.

[0107] Referring to Figures 8 to 10 together, in some embodiments, the cover plate 20 can comprise a main body cover plate 21 and a driving cavity cover plate 22. The main body cover plate 21 is arranged on the end of the side wall of the main body 11 away from the bottom wall thereof for openably covering the main body 11. The driving cavity cover plate 22 is arranged on the end of the side wall of the driving part 14 away from the bottom wall thereof for openably covering the driving part 14.

[0108] Referring to Figure 4 together, the main body cover plate 21 can be rotatably connected with the main body 11. The main body 11 can comprise at least one rotating connecting part 113 and at least one fixed connecting part 114. The rotating connecting part 113 and the fixed connecting part 114 are arranged on the bottom wall and / or the side wall of the main body 11. The main body cover plate 21 can be provided with a rotating connecting structure thereon. By arranging a rotating shaft to pass through the rotating connecting structure and the rotating connecting part 113, the main body cover plate 21 and the main body 11 can be rotatably connected.

[0109] The fixed connecting part 114 and the rotating connecting part 113 can be arranged on opposite ends of the main body 11, respectively. The main body cover plate 21 can be provided with a fixed connecting structure thereon opposite to the fixed connecting part 114. When the main body cover plate 21 covers the main body 11, the main body cover plate 21 and the main body 11 can be fixed relative to each other by connecting the fixed connecting structure and the fixed connecting part 114.

[0110] It should be understood that the rotating connection structure and / or fixed connection structure of the main cover plate 21 can be a structure independent of the plate body, such as a snap-fit ​​structure or a connection part with a separate connection hole. Alternatively, it can be a connection hole directly provided on the plate body, etc., without specific limitations here.

[0111] In some other alternative embodiments, the main cover plate 21 and the main body 11 can be detachably connected by means of fasteners, bolts or other connecting parts.

[0112] The drive chamber cover 22 and the drive unit 14 are detachably connected by bolts or other connecting parts.

[0113] In some other alternative embodiments, the two parts can be detachably connected by other types of connection structures such as snap-fit ​​structures. They can also be rotatably connected by providing a pivot.

[0114] In some other alternative embodiments, the main body cover 21 and the drive cavity cover 22 can also be configured as an integral plate structure, and by operating the plate structure, the opening and closing of the main body 11 and the drive unit 14 can be realized simultaneously.

[0115] like Figure 2 As shown, in some embodiments, the base 10 may also be provided with a sealing element 15, which may be provided on the side of the limiting plate 12 away from the iris switch assembly 30, for sealing the gap between the cover plate 20 and the limiting plate 12 when the cover plate 20 is covered on the base 10, thereby improving the sealing performance between the cover plate 20 and the base 10.

[0116] See also Figures 8 to 10 The seal 15 can be arranged in a ring shape and fits against the side of the limiting plate 12. Its outer circumference can be equivalent to the outer circumference of the limiting plate 12. Its inner circumference can be equivalent to or larger than the inner circumference of the limiting plate 12.

[0117] In some other alternative embodiments, the outer periphery of the seal 15 may be smaller than that of the limiting plate 12. Multiple seals 15 of different sizes may also be concentrically arranged along the radial direction of the limiting plate 12 to improve the sealing effect.

[0118] It can be understood that the above embodiments only express part of the embodiments of the present application, the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the patent of the present application; it should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, the above-mentioned embodiments or technical features can be freely combined, and some modifications and improvements can be made, which belong to the protection scope of the present application, that is, the embodiments described in "in some embodiments" can be freely combined with any embodiment above and below; therefore, any equivalent transformation and modification made with the scope of the claims of the present application shall belong to the scope of the claims of the present application.

Claims

1. A wall opening fire protection device, characterized in that, The application relates to a wall hole fireproof mechanism. The wall hole fireproof mechanism comprises a base (10) arranged at a hole of a wall body, a communication hole (111) corresponding to the hole is arranged on the base (10); an iris switch assembly (30) is arranged on the base (10) and comprises a plurality of blocking pieces (32) and a ring-shaped rotating disc (31); the rotating disc (31) is rotatably arranged on the base (10); the ring inner space of the rotating disc (31) corresponds to the communication hole (111); the plurality of blocking pieces (32) are distributed along the circumference of the communication hole (111) and are respectively movably connected with the rotating disc (31) and the base (10); the rotating disc (31) comprises a first rotating position and a second rotating position; when the rotating disc (31) is located at the first rotating position, the plurality of blocking pieces (32) close the communication hole (111) to block the hole; when the rotating disc (31) is located at the second rotating position, gaps exist between the plurality of blocking pieces (32) and the opening degree of the communication hole (111) is greater than zero. The base (10) comprises a main body (11) and a limiting plate (12); the main body (11) comprises a side wall and a ring-shaped bottom wall, the side wall surrounds at least part of the outer periphery of the bottom wall; the limiting plate (12) is arranged on the side wall and the iris switch assembly (30) is limited between the bottom wall and the limiting plate (12). The base (10) further comprises a wall-penetrating piece (13) penetrating the hole, the wall-penetrating piece (13) is in a cylindrical shape, one end of the wall-penetrating piece (13) is connected to the inner periphery of the bottom wall and the other end of the wall-penetrating piece (13) extends away from the side wall in the direction away from the bottom wall.

2. The wall opening fire stop of claim 1, wherein, The inner periphery of the wall-penetrating piece (13) is provided with a high-temperature expansion fireproof ring (40).

3. The wall opening fire stop of claim 2, wherein, The wall hole fireproof mechanism further comprises a cover plate (20) arranged on the base (10) and used for openably covering the base (10); the iris switch assembly (30) is located between the base (10) and the cover plate (20).

4. The wall opening fire stop of claim 3, wherein, The plurality of blocking pieces (32) are respectively arranged between the rotating disc (31) and the base (10), each blocking piece (32) comprises a blocking piece (321), a rotating shaft (322) and a moving piece (323); the rotating shaft (322) and the moving piece (323) are arranged on opposite sides in the thickness direction of the blocking piece (321), the rotating shaft (322) is movably connected to the base (10) and the moving piece (323) is movably connected to the rotating disc (31).

5. The wall opening fire stop of claim 1, wherein, The plurality of blocking pieces (321) are uniformly and adjacently arranged along the circumference, opposite sides in the connecting direction of each blocking piece (321) are respectively provided with a connecting groove (3211) and a connecting protrusion (3212); the connecting protrusion (3212) of each blocking piece (321) is movably arranged in the connecting groove (3211) of the blocking piece (321) adjacent to the connecting protrusion (3212).

6. The wall opening fire stop of claim 1, wherein, ​ 7. The wall opening fire stop of claim 6, wherein, ​ 8. The wall opening fire stop of claim 6, wherein, A plurality of first guide structures (115) are circumferentially arranged on the base (10), and the rotating shaft (322) is movably arranged in the first guide structures (115); the rotating disc (31) is circumferentially provided with a plurality of second guide structures (311), and the moving part (323) is movably arranged in the second guide structures (311).

9. The wall opening fire protection assembly according to claim 8, wherein, The first guide structures (115) respectively extend along the radial direction of the base (10); the second guide structures (311) respectively extend along the same side of the radial direction of the base (10) and are inclined at the same angle.

10. The wall opening fire stop of claim 1, wherein, The base (10) is defined with a driving cavity (141), and the iris switch assembly (30) further comprises a driving part (33) which is rotatably arranged in the driving cavity (141) and is in meshing connection with the rotating disc (31).

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