Fabricated fireproof sleeve

Abstract

The utility model provides an assembly type fireproof sleeve, and relates to the technical field of fireproof sleeves. The fireproof sleeve comprises a sleeve inner cylinder, a sleeve outer cylinder is arranged outside the sleeve inner cylinder, a connecting sealing piece is arranged between the sleeve inner cylinder and the sleeve outer cylinder, a heat insulation layer is arranged in a space defined by the sleeve outer cylinder, the connecting sealing piece and the sleeve inner cylinder, the heat insulation layer is filled with fireproof materials, and a fixing sleeve is further arranged outside the sleeve outer cylinder. A sliding groove penetrating through the two ends is formed in the inner wall of the fixing sleeve, a sliding block is fixed to the outer wall of the sleeve outer cylinder, a fireproof material and the sleeve body are constructed into a whole, the sliding block is in sliding fit with the sliding groove in the pre-buried fixing sleeve, and therefore the fireproof sleeve has the good fireproof characteristic and is convenient to construct and install; the technical problem of tedious construction procedures is solved, the product quality is guaranteed through factory prefabrication and field assembly, installation is simple and convenient, secondary plugging is not needed after installation, the construction cost is reduced, and the installation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof sleeves, in particular to an assembled fireproof sleeve. Background Art

[0002] According to the requirements of building installation projects, pipes passing through walls or floor slabs need to be equipped with casings to close the various openings and gaps left by pipes and cables passing through building walls, floors and ceilings, so as to prevent the fire from spreading and spreading through these holes in the event of a fire, thereby causing more serious damage.

[0003] In the existing technology, after the masonry of the building wall is completed, holes are generally left at the pipeline passing position, and the casing is pre-buried on-site. After the casing is installed, it will be surrounded and filled with flexible fire-proof materials such as rock wool, and then the gap will be filled and sealed with fire-proof materials such as fire-proof mud, fire-proof boards, and fire-proof bags. This method has a cumbersome construction process and consumes a lot of manpower and material resources. There are also safety hazards in places higher than the ground, and it is not conducive to later maintenance. Utility Model Content

[0004] In view of the deficiencies existing in the prior art, the utility model provides an assembled fireproof casing, which can reduce the difficulty of installation, improve the installation efficiency, and solve the problem of complicated construction procedures existing in the prior art.

[0005] According to an embodiment of the utility model, an assembled fireproof sleeve comprises a sleeve inner tube, a sleeve outer tube is arranged outside the sleeve inner tube, connecting seals are respectively arranged between the same side ends of the sleeve inner tube and the sleeve outer tube, a heat insulation layer is arranged in the space surrounded by the sleeve outer tube, the connecting seal and the sleeve inner tube, a fixed sleeve is further arranged outside the sleeve outer tube, a sliding groove running through both ends is arranged on the inner wall of the fixed sleeve, and a sliding block is fixed on the outer wall of the sleeve outer tube.

[0006] The technical principle of the utility model is: one side of the outer tube of the casing is fixedly connected to the inner tube of the casing through a connecting seal to form a cavity insulation layer with an opening on one side, and the insulation aerogel felt fireproof material is filled into the insulation layer through the opening side, and finally the outer tube of the casing and the inner tube of the casing on the opening side are connected and sealed by a connecting seal. When in use, the fixed sleeve is first embedded to make it tightly combined with the masonry wall, and then the slider on the outer tube of the casing is aligned with the slide groove of the fixed sleeve and pushed until the two ends of the fireproof casing are evenly distributed on both sides of the wall.

[0007] Furthermore, the inner sleeve tube, the outer sleeve tube and the fixed sleeve tube are all formed by bending steel plates, and the three are coaxial.

[0008] Furthermore, the connecting seal comprises a diameter-enlarging section and a diameter-reducing section.

[0009] Furthermore, the enlarged diameter section of the connecting seal is fixedly connected to the outer tube of the sleeve, and the reduced diameter section is fixedly connected to the inner tube of the sleeve.

[0010] Furthermore, the enlarged diameter section and the reduced diameter section of the connecting seal are cylindrical structures and are provided with internal threads, and the outer sleeve tube and the inner sleeve tube are respectively provided with external threads matching the internal threads.

[0011] Furthermore, the middle section of the slide groove is also provided with a limiting groove for the sliding block to be screwed into, and the inner wall of the limiting groove is movably provided with a limiting protrusion, and the bottom of the limiting protrusion is provided with a spring.

[0012] Furthermore, sleeve flanges are provided at both ends of the sleeve inner tube.

[0013] Furthermore, the outer wall of the fixing sleeve is also provided with a plurality of dot-shaped protrusions.

[0014] Compared with the prior art, the utility model has the following beneficial effects: by fixedly connecting the outer tube of the casing and the inner tube of the casing to form an insulating layer with a cavity, and then filling the insulating aerogel felt fireproof material into the insulating layer, the fireproof material and the casing body are formed into a whole, and then the slider of the outer tube of the casing is slidably matched with the slide groove in the embedded fixed sleeve, so that the device as a whole has good fireproof properties and is easy to install and disassemble the casing, solving the technical problem of complicated on-site construction procedures. The assembled fireproof casing proposed by the utility model can be assembled and produced in the factory according to the casing diameter planned at the construction site, so that the product quality can be guaranteed, and the on-site construction is very simple and convenient for installation and disassembly, which meets the requirements of prefabricated buildings, and no secondary sealing is required after installation, which reduces the construction cost and improves the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the cross-sectional structure of an embodiment of the utility model (assembled in a masonry wall).

[0016] Figure 2 It is a schematic diagram of the side cross-sectional structure of an embodiment of the utility model.

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of a fixing sleeve according to an embodiment of the utility model.

[0018] Figure 4 It is a schematic diagram of the enlarged structure of structure A of an embodiment of the utility model.

[0019] Figure 5 This is a schematic diagram of the cross-sectional structure of a connecting seal according to an embodiment of the utility model.

[0020] In the above drawings: 1. inner tube of the sleeve; 2. thermal insulation layer; 3. outer tube of the sleeve; 31. slider; 4. fixed sleeve; 41. slide groove; 42. limiting groove; 43. limiting protrusion; 44. spring; 5. connecting seal; 51. reduced diameter section; 52. enlarged diameter section; 6. sleeve flange. DETAILED DESCRIPTION

[0021] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] like Figure 1 and Figure 2 As shown, an embodiment of the utility model proposes an assembled fireproof sleeve, which includes a sleeve inner tube 1, a sleeve outer tube 3 is arranged on the outside of the sleeve inner tube, connecting seals 5 are respectively arranged between the same side ends of the sleeve inner tube 1 and the sleeve outer tube 3, and a fixed sleeve 4 is also arranged on the outside of the sleeve outer tube 3. The sleeve inner tube 1, the sleeve outer tube 3 and the fixed sleeve 4 are all formed by bending steel plates, and the cross-sectional shape is preferably circular or rectangular, and the three are coaxial, and the movable end of the steel plate is preferably connected and fixed by welding. The connecting seal 5 includes a narrowing section 52 and a reducing section 51, the narrowing section 52 and the reducing section 51 are coaxial and fixedly connected at the bottom, and the connection method is preferably welding. The narrowing section 52 of the connecting seal 5 is fixedly connected to the sleeve outer tube 3, and the reducing section 51 is fixedly connected to the sleeve inner tube 1, and the connection method is preferably welding.

[0023] like Figure 1 and Figure 2 As shown, the space enclosed by the outer sleeve 3, the connecting seal 5 and the inner sleeve 1 is provided with an insulation layer 2. The connecting seal 5 has the function of connecting the inner sleeve 1 and the outer sleeve 3 and sealing the insulation layer 2. The thickness of the insulation layer 2 is generally not less than 50 mm to ensure that a good fireproofing effect can be achieved. The insulation layer 2 is filled with solid fireproof material, and the solid fireproof material is an insulating aerogel felt, preferably a nano-aerogel composite material. The inner wall of the fixed sleeve 4 is provided with a slide groove 41 running through both ends, and a slider 31 is fixed on the outer wall of the outer sleeve 3. The slide groove 41 matches the slider 31 and allows the slider 31 to slide freely therein. Casing flanges 6 are also provided at both ends of the inner sleeve 1 to facilitate connection with other pipelines. The casing flanges 6 are provided with silicone rings to ensure the sealing of the pipeline connection.

[0024] like Figure 1 and Figure 2As shown, the detailed working process of this embodiment is: bend the steel plate into a cylinder to form a casing inner tube 1, a casing outer tube 3 and a fixed sleeve 4, and fix one side of the casing outer tube 3 to the casing inner tube 1 through a connecting seal 5 to form a cavity insulation layer 2 with an open side, fill the insulation aerogel felt fireproof material into the insulation layer 2 through the open side, and finally connect and seal the casing outer tube 3 and the casing inner tube on the open side with the connecting seal 5. When in use, first embed the fixed sleeve 4, preferably cement and other building materials with good viscosity, so that the fixed sleeve 4 is tightly combined with the masonry wall, and then align the slider 31 on the casing outer tube 3 with the slide groove 41 of the fixed sleeve 4 and push it until the two ends of the fireproof sleeve are evenly distributed on both sides of the wall. In subsequent construction, the pipelines to be laid can be directly connected to the fireproof sleeve through the casing flange 6.

[0025] like Figure 1 and Figure 2 As shown, by fixing the outer tube 3 of the sleeve with the inner tube 1 of the sleeve to form an insulation layer 2 with a cavity, and then filling the insulation layer 2 with insulation aerogel felt fireproof material, the fireproof material and the sleeve body are formed into a whole, and then the slider 31 of the outer tube 3 of the sleeve is slidably matched with the slide groove 41 in the embedded fixed sleeve 4, so that the device as a whole has good fireproof properties and is easy to install and disassemble, which solves the technical problem of complicated on-site construction procedures. The assembled fireproof sleeve proposed by the utility model can be assembled and produced in the factory according to the sleeve diameter planned at the construction site, so that the product quality can be guaranteed, and the on-site construction is very simple and convenient for installation and disassembly, which meets the requirements of assembled buildings, and no secondary sealing is required after installation, which reduces the construction cost and improves the installation efficiency.

[0026] like Figure 3 As shown, preferably, according to another embodiment of the utility model, in the assembled fireproof sleeve, the middle section of the slide groove 41 is also provided with a limiting groove 42 for the slider 31 to be screwed into, and when the slider 31 slides in the slide groove 41 to the position of the limiting groove 42, it can be rotated and inserted into the limiting groove 42, thereby limiting the movement of the sleeve as a whole in the direction of the slide groove.

[0027] like Figure 4As shown, preferably, according to another embodiment of the utility model, in the assembled fireproof sleeve, a limiting protrusion 43 is movably provided on the inner wall of the limiting groove 42, and a spring 44 is provided at the bottom of the limiting protrusion 43. When the slider 31 rotates into the limiting groove 42, a force is applied to the limiting protrusion 43. The limiting protrusion 43 is squeezed and the spring 44 is forced to be compressed, thereby causing the limiting protrusion 43 to retract into the cavity where the spring 44 is located, and the slider 31 can smoothly enter the limiting groove 42. After the squeezing force on the limiting protrusion 43 disappears, it will extend out of the cavity where the spring 44 is located again under the action of the elastic force of the spring 44, thereby limiting the slider 31 and preventing the slider 31 from escaping from the limiting groove 42.

[0028] like Figure 4 As shown, in this embodiment, the position of the slider 31 is further limited by adding a limiting groove 42 and a limiting protrusion 43, so that the slider 31 drives the overall position of the sleeve to be limited, making the fireproof sleeve more stable and firm after installation.

[0029] like Figure 5 As shown, preferably, according to another embodiment of the utility model, the narrowing section 52 and the reducing section 51 of the connecting seal 5 are configured as a cylindrical structure, and the free ends of the narrowing section 52 and the reducing section 51 are also provided with internal threads, and the two ends of the sleeve outer tube 3 and the sleeve inner tube 1 are respectively provided with external threads matching the internal threads, the inner thread structure of the narrowing section 52 and the reducing section 51 are the same, the starting position of the thread is consistent, and the pitch and the total length of the thread are also the same, ensuring that during the rotation of the connecting seal 5, while the internal thread of the narrowing section 52 and the sleeve outer tube 3 are rotated and tightened, the reducing section 51 and the sleeve inner tube 1 will also be rotated and tightened synchronously.

[0030] like Figure 5 As shown, based on the above further improvement, when in use, the sealing member 5 can be connected tightly to or separated from the inner tube 1 and the outer tube 3 of the casing by rotating the connection seal 5, which is beneficial for later maintenance and convenient for replacing the fireproof filling material in the insulation layer 2.

[0031] like Figure 1 As shown, preferably, according to another embodiment of the utility model, in the assembled fireproof sleeve, the outer wall of the fixed sleeve 4 is also provided with a plurality of dot-shaped protrusions to increase the stability of the fixed sleeve 4 after being embedded in the wall. Based on the above further improvement, since the dot-shaped protrusions can cooperate with the wall, the fireproof sleeve can be installed more stably.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An assembled fireproof casing, characterized in that: It comprises a sleeve inner tube, an sleeve outer tube is arranged outside the sleeve inner tube, connecting seals are arranged between the same side ends of the sleeve inner tube and the sleeve outer tube respectively, a heat insulation layer is arranged in the space surrounded by the sleeve outer tube, the connecting seal and the sleeve inner tube, a fixed sleeve is also arranged outside the sleeve outer tube, a sliding groove running through both ends is arranged on the inner wall of the fixed sleeve, and a sliding block is fixed on the outer wall of the sleeve outer tube.

2. The assembled fireproof casing according to claim 1, characterized in that: The inner sleeve tube, the outer sleeve tube and the fixed sleeve tube are all formed by bending steel plates, and the three are coaxial.

3. The assembled fireproof casing according to claim 1, characterized in that: The connecting seal comprises a narrow diameter section and a reduced diameter section.

4. The assembled fireproof casing according to claim 3, characterized in that: The enlarged diameter section of the connecting seal is fixedly connected to the outer tube of the sleeve, and the reduced diameter section is fixedly connected to the inner tube of the sleeve.

5. The assembled fireproof casing according to claim 3, characterized in that: The enlarged diameter section and the reduced diameter section of the connecting seal are cylindrical structures and are provided with internal threads, and the outer sleeve tube and the inner sleeve tube are respectively provided with external threads matching the internal threads.

6. The assembled fireproof casing according to claim 1, characterized in that: The middle section of the slide groove is also provided with a limiting groove for the sliding block to be screwed into, and the inner wall of the limiting groove is movably provided with a limiting protrusion, and the bottom of the limiting protrusion is provided with a spring.

7. The assembled fireproof casing according to claim 1, characterized in that: Casing flanges are also arranged at both ends of the casing inner tube.

8. The assembled fireproof casing according to claim 1, characterized in that: The outer wall of the fixing sleeve is also provided with a plurality of dot-shaped protrusions.

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