Air exhaust and smoke exhaust integrated assembly type cavity floor system

Abstract

The utility model belongs to the technical field of cavity floor system application, and particularly discloses an air exhaust and smoke exhaust integrated assembly type cavity floor system. Comprising a head end assembly type cavity floor system, a plurality of middle assembly type cavity floor systems, a tail end assembly type cavity floor system, a lower through groove, a first transverse through groove, a second transverse through groove, a third through groove, a fourth transverse through groove, a fifth through groove, a first air guide pipe, a second air guide pipe, an external air guide pipe and the like. The air exhaust and smoke exhaust integrated assembly type cavity floor system has the advantages that the function of the assembly type cavity floor system is expanded, a traditional air exhaust and smoke exhaust pipeline is replaced, on one hand, the construction period is shortened, and on the other hand, the building construction cost is correspondingly reduced; and 2, a plurality of first inclined baffles, a plurality of second inclined baffles and a plurality of third inclined baffles which are respectively matched with the first gas guide pipe, the second gas guide pipe and the external gas guide pipe for use play a role in preventing the flue gas from flowing backwards.

Description

Technical Field

[0001] This utility model belongs to the field of cavity floor slab application technology, specifically relating to a prefabricated cavity floor slab with integrated ventilation and smoke extraction. Background Technology

[0002] Precast hollow slabs refer to precast concrete slabs made by casting sections using recycled aggregate concrete as the base building material during the precast assembly process. This maintains a good ratio between structural strength and overall weight, thereby achieving the goals of saving materials and reducing self-weight.

[0003] Buildings have requirements for fire smoke extraction or ventilation. Current methods involve adding corresponding pipes, which increases construction costs and extends the construction period.

[0004] With the advancement of building construction technology, the functions of traditional prefabricated cavity floor slabs are being expanded according to needs. For example, integrating ventilation and smoke extraction into prefabricated cavity floor slabs can solve the problems of high construction costs and long construction periods. How to solve the ventilation and smoke extraction problem in prefabricated cavity floor slabs is a current research topic.

[0005] Therefore, based on the above problems, this utility model provides a prefabricated cavity floor slab that integrates ventilation and smoke extraction. Utility Model Content

[0006] Purpose of the utility model: The purpose of this utility model is to provide a prefabricated cavity floor slab with integrated ventilation and smoke extraction, which solves the technical problem of the inability to exhaust ventilation and smoke in existing prefabricated cavity floor slabs.

[0007] Technical Solution: This utility model discloses a prefabricated hollow floor slab with integrated ventilation and smoke extraction, comprising a front prefabricated hollow floor slab, several middle prefabricated hollow floor slabs, and a rear prefabricated hollow floor slab. A lower through groove is provided in the bottom surface of the symmetrical center line of the front prefabricated hollow floor slab. A first transverse through groove is provided in the side wall of any side of the front prefabricated hollow floor slab. Second and third transverse through grooves are symmetrically provided in the outer walls of both sides of the middle prefabricated hollow floor slabs. Fourth and fifth transverse through grooves are symmetrically provided in the outer walls of both sides of the rear prefabricated hollow floor slab. The first and second transverse through grooves are connected by a first air guide pipe, and the third and fourth transverse through grooves are connected by a second air guide pipe. An external air guide pipe is provided on the fifth through groove.

[0008] The prefabricated cavity floor slab with integrated ventilation and smoke extraction in this technical solution further includes an exhaust duct seat located on the outer wall of the prefabricated cavity floor slab at the first end and on the surface of the lower through groove, an exhaust duct connected to the exhaust duct seat, an explosion-proof integrated centrifugal fan connected to the exhaust duct, and an inlet and outlet air guide pipe connected to the explosion-proof integrated centrifugal fan.

[0009] The prefabricated cavity floor slab with integrated ventilation and smoke extraction in this technical solution further includes a plurality of first inclined baffles and a plurality of second inclined baffles respectively staggered on the inner walls of the first air duct and the second air duct; wherein the first air duct and the second air duct are cylindrical structures, and the plurality of first inclined baffles and the plurality of second inclined baffles respectively form a labyrinth structure on the inner walls of the first air duct and the second air duct.

[0010] The prefabricated cavity floor slab with integrated ventilation and smoke extraction in this technical solution also includes several third inclined baffles staggered on the inner wall of the external air duct; wherein, the external air duct is a cylindrical structure, and the several third inclined baffles form a labyrinth structure on the inner wall of the external air duct.

[0011] Compared with the prior art, the beneficial effects of the prefabricated hollow floor slab with integrated ventilation and smoke exhaust of this utility model are as follows: 1. It expands the function of the prefabricated hollow floor slab and replaces the traditional ventilation and smoke exhaust pipes, which shortens the construction period and reduces the construction cost accordingly; 2. The several first inclined baffles, several second inclined baffles, and several third inclined baffles used in conjunction with the first air duct, the second air duct, and the external air duct respectively prevent the backflow of smoke. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the main view of a prefabricated cavity floor slab that integrates ventilation and smoke extraction according to this utility model.

[0014] Figure 2 This is a bottom view structural diagram of a prefabricated cavity floor slab integrating ventilation and smoke extraction according to this utility model.

[0015] Figure 3 This is a structural diagram of the first air guide pipe and several first inclined baffles of a prefabricated cavity floor slab that integrates ventilation and smoke extraction according to this utility model.

[0016] Figure 4 This is a schematic diagram of the external air duct and several third inclined baffles of a prefabricated cavity floor slab that integrates ventilation and smoke extraction according to this utility model.

[0017] Figure 5 This is a structural diagram of the second air guide pipe and several second inclined baffles of a prefabricated cavity floor slab that integrates ventilation and smoke extraction according to this utility model.

[0018] The numbers in the diagram are as follows: 100-lower channel, 101-exhaust duct seat, 102-first horizontal channel, 103-second horizontal channel, 104-first air guide pipe, 105-third channel, 106-fourth horizontal channel, 107-second air guide pipe, 108-fifth channel, 109-external air guide pipe, 110-first inclined baffle, 111-third inclined baffle, 112-second inclined baffle, 10-wall, 11-exhaust duct, 12-first prefabricated hollow floor slab, 13-middle prefabricated hollow floor slab, 14-tail prefabricated hollow floor slab, 15-fan seat, 16-explosion-proof integrated centrifugal fan, 17-inlet and outlet air guide pipes. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "top," "bottom," "one side," "the other side," "front," "back," "middle part," "inner," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1

[0023] like Figure 1 and Figure 2 The diagram shows a prefabricated hollow floor slab with integrated ventilation and smoke extraction, comprising a front prefabricated hollow floor slab 12, several middle prefabricated hollow floor slabs 13, and a rear prefabricated hollow floor slab 14.

[0024] A lower through groove 100 is provided in the bottom surface of the symmetrical center line of the prefabricated hollow floor slab 12 at the first end.

[0025] A first transverse groove 102 is provided in the side wall of any one side of the prefabricated hollow floor slab 12 at the first end.

[0026] The inner sides of the two outer walls of the central prefabricated hollow floor slab 13 are symmetrically provided with a second transverse groove 103 and a third transverse groove 105.

[0027] The outer walls on both sides of the prefabricated hollow floor slab 14 at the tail end are symmetrically provided with a fourth transverse groove 106 and a fifth transverse groove 108.

[0028] The first transverse channel 102 and the second transverse channel 103 are connected by a first air guide pipe 104.

[0029] The third through groove 105 and the fourth transverse through groove 106 are connected by the second air guide pipe 107.

[0030] An external air guide pipe 109 is provided on the fifth channel 108.

[0031] The working principle is as follows: First, the flue gas enters the prefabricated hollow floor slab 12 at the first end through the lower channel 100, then enters the middle prefabricated hollow floor slab 13 through the first horizontal channel 102, the second horizontal channel 103, and the first air guide pipe 104 in sequence, and finally enters the tail prefabricated hollow floor slab 14 through the third channel 105, the fourth horizontal channel 106, and the second air guide pipe 107 in sequence, and is discharged through the external air guide pipe 109 on the fifth channel 108.

[0032] Example 2

[0033] Based on Embodiment 1, the prefabricated cavity floor slab with integrated ventilation and smoke extraction also includes an exhaust duct seat 101 disposed on the outer wall of the prefabricated cavity floor slab 12 at the first end and located on the surface of the lower through groove 100, an exhaust duct 11 connected to the exhaust duct seat 101, an explosion-proof integrated centrifugal fan 16 connected to the exhaust duct 11, and an inlet and outlet air guide pipe 17 connected to the explosion-proof integrated centrifugal fan 16.

[0034] The aforementioned exhaust duct seat 101 is installed on the wall 10. When the explosion-proof integrated centrifugal fan 16 is started (which is the power source for flue gas circulation and rotates clockwise for extraction), the flue gas first enters the prefabricated hollow floor slab 12 at the first end through the lower channel 100, and then enters several middle prefabricated hollow floor slabs 13 through the first horizontal channel 102, the second horizontal channel 103, and the first air guide pipe 104 in sequence. Finally, it enters the prefabricated hollow floor slab 14 at the tail end through the third channel 105, the fourth horizontal channel 106, and the second air guide pipe 107 in sequence, and is discharged through the external air guide pipe 109 on the fifth channel 108.

[0035] When ventilation is required (drawing outside air into the room); when the explosion-proof integrated centrifugal fan 16 is started (serving as the power source for flue gas circulation, extracting part of it and rotating counterclockwise), the outside air first enters the prefabricated cavity floor slab 14 at the tail end through the fifth channel 108 and the external air guide pipe 109, then enters the prefabricated cavity floor slab 13 in the middle through the third channel 105, the fourth horizontal channel 106 and the second air guide pipe 107, and finally enters the prefabricated cavity floor slab 12 through the first horizontal channel 102, the second horizontal channel 103 and the first air guide pipe 104. At this time, the air in the prefabricated cavity floor slab 12 is discharged into the room through the exhaust duct 11 and the inlet and outlet air guide pipe 17.

[0036] In addition, preferably as follows Figure 3 and Figure 5 As shown, the prefabricated cavity floor slab with integrated ventilation and smoke extraction also includes a number of first inclined baffles 110 and a number of second inclined baffles 112 that are respectively staggered on the inner walls of the first air duct 104 and the second air duct 107.

[0037] The first air duct 104 and the second air duct 107 are cylindrical structures. Several first inclined baffles 110 and several second inclined baffles 112 form a labyrinth structure on the inner walls of the first air duct 104 and the second air duct 107, respectively. The above structural design prevents the backflow of smoke during smoke exhaust and ensures the safety of smoke exhaust operations.

[0038] Furthermore, preferably as follows Figure 4 As shown, the prefabricated cavity floor slab with integrated ventilation and smoke extraction also includes several third inclined baffles 111 that are staggered on the inner wall of the external air duct 109.

[0039] The external air duct 109 is a cylindrical structure, and several third inclined baffles 111 form a labyrinth structure on the inner wall of the external air duct 109. The above structural design prevents the backflow of smoke during smoke exhaust and ensures the safety of smoke exhaust operations.

[0040] This prefabricated cavity floor slab, which integrates ventilation and smoke extraction, expands functionality, replaces traditional ventilation and smoke extraction ducts, and greatly shortens the construction period and reduces the economic cost of building construction.

[0041] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A prefabricated hollow floor slab integrating ventilation and smoke extraction, comprising a front prefabricated hollow floor slab (12), several middle prefabricated hollow floor slabs (13) and a rear prefabricated hollow floor slab (14), characterized in that: A lower through groove (100) is provided in the bottom surface of the symmetrical center line of the prefabricated cavity floor slab (12) at the first end. A first transverse groove (102) is provided in the side wall of any one side of the prefabricated hollow floor slab (12). The inner sides of the two outer walls of the central prefabricated cavity floor slab (13) are symmetrically provided with a second transverse groove (103) and a third transverse groove (105). The tail-end assembled cavity floor slab (14) has a fourth horizontal through groove (106) and a fifth through groove (108) symmetrically arranged on the inner sides of its outer walls. The first transverse channel (102) and the second transverse channel (103) are connected by a first air guide pipe (104). The third through groove (105) and the fourth transverse through groove (106) are connected by a second air guide pipe (107). An external air guide pipe (109) is provided on the fifth through slot (108).

2. The prefabricated hollow floor slab with integrated ventilation and smoke extraction as described in claim 1, characterized in that: The prefabricated cavity floor slab with integrated ventilation and smoke extraction also includes an exhaust duct seat (101) located on the outer wall of the prefabricated cavity floor slab (12) at the first end and on the surface of the lower through groove (100), an exhaust duct (11) connected to the exhaust duct seat (101), an explosion-proof integrated centrifugal fan (16) connected to the exhaust duct (11), and an inlet and outlet air guide pipe (17) connected to the explosion-proof integrated centrifugal fan (16).

3. The prefabricated cavity floor slab with integrated ventilation and smoke extraction according to claim 2, characterized in that: The prefabricated cavity floor slab with integrated ventilation and smoke exhaust also includes a number of first inclined baffles (110) and a number of second inclined baffles (112) that are respectively staggered on the inner walls of the first air duct (104) and the second air duct (107). Among them, the first air guide tube (104) and the second air guide tube (107) are cylindrical structures, and a number of first inclined baffles (110) and a number of second inclined baffles (112) form a labyrinth structure on the inner wall of the first air guide tube (104) and the second air guide tube (107).

4. The prefabricated cavity floor slab with integrated ventilation and smoke extraction according to claim 3, characterized in that: The prefabricated cavity floor slab with integrated ventilation and smoke exhaust also includes several third inclined baffles (111) that are staggered on the inner wall of the external air duct (109). The external air duct (109) is cylindrical, and several third inclined baffles (111) form a labyrinth structure on the inner wall of the external air duct (109).

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