Combined fireproof sleeve

Abstract

The utility model provides a combined fireproof sleeve which comprises a straight cylinder, an elastic pipe cylinder coaxial with the straight cylinder and a sleeve clamping ring connecting the straight cylinder and the elastic pipe cylinder. The straight tube is sleeved with a flexible fireproof layer; the elastic pipe barrel is a corrugated pipe, the corrugated pipe is made of fireproof materials, an anti-tearing net is embedded in the pipe wall of the corrugated pipe, and frameworks embedded in the pipe wall are arranged on the two sides of the pipe wall of the corrugated pipe in the axis direction of the corrugated pipe. The two ends of the corrugated pipe are embedded in the sleeve clamping ring, a plurality of elastic positioning mechanisms protruding out of the wall face of the inner wall of the sleeve clamping ring are embedded in the sleeve clamping ring along the inner wall in an annular array mode, and the elastic positioning mechanisms can be extruded into a sleeve clamping ring body after being stressed by force along the axis of the sleeve. Positioning grooves matched with the elastic positioning mechanisms in number to position the sleeve are formed in the straight cylinder in an annular array mode, and a flange protruding towards the axis is arranged on the inner wall of the end, away from the straight cylinder, of the sleeve clamping ring to limit the straight cylinder.

Description

Technical Field

[0001] The utility model relates to the field of casings, in particular to a combined fireproof casing. Background Art

[0002] In construction and installation projects, pipes passing through walls or floors must be equipped with fireproof casings.

[0003] The fireproof casing itself should have the following properties: 1. The inner and outer layer materials of the fire-fighting wire casing should be flame-retardant materials that are resistant to high temperature, fire and corrosion; 2. It should have sufficient strength to withstand harsh working environments and certain mechanical loads to protect the safety of internal pipelines; 3. It should be easy to install.

[0004] Existing fireproof casings are usually composed of a straight tube body, a fireproof layer, and an outer tube, or a special-shaped tube body. The casings are connected through the casing flanges according to the working conditions.

[0005] However, the existing technology has the following problems: the pipes need to be connected by flanges at both ends. If the space where the pipes need to be installed is small, the installation will be very troublesome, and the special-shaped pipe body may not be able to adapt to all bent pipes. If ordinary corrugated pipes or similar elastic pipes are used, their strength cannot meet the requirements of fireproof casings. Utility Model Content

[0006] In view of the problems existing in the prior art, the utility model provides a combined fireproof casing, which can solve the problems of the prior art in that the casing is difficult to install and the elastic pipe body is insufficient in strength.

[0007] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows:

[0008] A combined fireproof casing comprises a straight tube, an elastic tube coaxially arranged with the straight tube, and a casing clamp connecting the straight tube and the elastic tube;

[0009] A flexible fireproof layer is provided on the outer shell of the straight tube;

[0010] The elastic tube is a bellows made of fireproof material, the wall of the bellows is embedded with a tear-proof mesh, and frames embedded in the wall of the bellows are provided on both sides along the axis of the bellows;

[0011] Both ends of the bellows are embedded in the sleeve clamp, and the sleeve clamp is embedded with a number of elastic positioning mechanisms protruding inward from the inner wall of the sleeve clamp in a circular array along the inner wall. The elastic positioning mechanism will be squeezed into the sleeve clamp body after being subjected to a force along the sleeve axis and toward one side of the elastic tube. The outer wall of the straight tube is circumferentially provided with positioning grooves with the same number as the elastic positioning mechanism. The positioning grooves cooperate with the elastic positioning mechanism to position the straight tube, and a flange protruding toward the axis is provided on the inner wall of the end of the sleeve clamp facing away from the straight tube to limit the straight tube.

[0012] Furthermore, the elastic positioning mechanism is embedded in the block groove opened on the sleeve clamping ring. The elastic positioning mechanism is composed of a positioning block and a spring. One end of the spring is fixedly connected to the inner end face of the block groove, and the other end is fixedly connected to the positioning block. A part of the positioning block protrudes from the notch of the block groove. The part of the positioning block protruding from the notch of the block groove can be inserted into the positioning groove and can be retracted into the block groove.

[0013] Furthermore, a sealing rubber pad is provided on the side of the flange that contacts the straight cylinder, and the sealing rubber pad is made of fireproof material.

[0014] Furthermore, the fireproof layer is wrapped around the outside of the straight tube, and after the fireproof layer wraps around the straight tube, a part of the fireproof layer overlaps with itself to form an overlapping area, and the overlapping area is parallel to the axis of the straight tube. The lower edge of the fireproof layer stacked on top and the upper edge of the fireproof layer stacked below in the overlapping area are respectively provided with adhesive layers along the axis direction of the straight tube, and the adhesive layers cooperate to fix the overlapping area of ​​the fireproof layer, and the fireproof layer itself is adhered to the straight tube to prevent the fireproof layer from moving.

[0015] Furthermore, a portion of the upper edge of the fireproof layer stacked below in the overlapping area is cut off, and a portion of the lower edge of the fireproof layer stacked above in the overlapping area is cut off. After the fireproof layer below and the fireproof layer above are fixed together by overlapping, the thickness is equal to the thickness of the fireproof layer in the non-overlapping area.

[0016] Furthermore, the overlapping area is fitted by arranging Velcro on the upper and lower edges.

[0017] Furthermore, the gaps in the overlapping areas are filled with fire retardant paint to reduce the gaps.

[0018] Furthermore, a positioning line parallel to the axis is engraved on the outer wall of the sleeve clamp corresponding to the elastic positioning mechanism, and a positioning line parallel to the axis of the straight cylinder is engraved on the straight cylinder and the fireproof layer, extending from the positioning groove. The two positioning lines cooperate to quickly install the straight cylinder into the clamp.

[0019] The utility model has the following beneficial effects: in order to solve the problem that the existing sleeve is troublesome to install, the utility model arranges elastic positioning mechanisms and positioning grooves that cooperate with each other on the straight tube and the sleeve clamp, and a detachable fireproof layer is arranged on the outer outer surface of the sleeve straight tube. The fireproof layer is quick and easy to install and does not require manpower to fill the fireproof material at a later time. The fireproof material filled at a later time may not be filled evenly. The fully covered fireproof layer can better protect the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of the utility model;

[0021] Figure 2 This is a side view of the fireproof layer of the utility model;

[0022] Figure 3 This is a schematic diagram of the fireproof layer of the utility model;

[0023] Figure 4 This is a schematic diagram of the scale lines of the present invention.

[0024] In the above drawings:

[0025] Straight tube 1, fireproof layer 2, upper edge 21, lower edge 22, overlapping area 3, bellows 4, elastic positioning mechanism 5, block groove 51, spring 52, positioning block 53, positioning groove 54, sleeve clamping ring 6, sealing gasket 61, skeleton 7, anti-tear mesh 8, positioning line 9. DETAILED DESCRIPTION

[0026] The following is explained with reference to the accompanying drawings and embodiments:

[0027] like Figure 1 The combined fireproof casing shown includes a straight tube 1, an elastic tube coaxially arranged with the straight tube 1, and a casing clamp 6 connecting the straight tube 1 and the elastic tube;

[0028] like Figure 2As shown, the straight tube 1 is provided with a flexible fireproof layer 2 on the outside; preferably, the fireproof layer 2 is coated on the outside of the straight tube 1, and after the fireproof layer 2 covers the straight tube 1, a portion overlaps with itself to form an overlapping area 3, and the overlapping area 3 is parallel to the axis of the straight tube 1. The lower edge 22 of the fireproof layer 2 stacked on top and the upper edge 21 of the fireproof layer 2 stacked below in the overlapping area 3 are glued and fixed, and the fireproof layer 2 itself is glued to the straight tube 1 to prevent the fireproof layer 2 from moving. Preferably, the upper edge 21 of the fireproof layer 2 stacked below in the overlapping area 3 is partially cut off, and the lower edge 22 of the fireproof layer 2 stacked above in the overlapping area 3 is partially cut off. After the fireproof layer 2 below and the fireproof layer 2 above are fixed together by overlapping, the thickness of the fireproof layer 2 in the overlapping area 3 is equal to the thickness of the fireproof layer 2 in the non-overlapping area 3, so that the overall thickness of the sleeve is uniform. Preferably, the overlapping area 3 is attached by providing Velcro on the upper edge 21 and the lower edge 22. Preferably, the gaps in the overlapping area 3 are filled with fire retardant paint to reduce the gaps and improve the sealing performance of the casing.

[0029] like Figure 1 and Figure 3 As shown, the elastic tube is a bellows 4 made of fireproof material, and an anti-tear mesh 8 is embedded in the wall of the bellows 4. A skeleton 7 embedded in the wall of the bellows 4 is provided on both sides of the inner wall of the bellows 4 along the axial direction of the bellows 4; both ends of the bellows 4 are embedded in the sleeve clamp 6, and the sleeve clamp 6 is embedded with a number of elastic positioning mechanisms 5 protruding inward from the inner wall of the sleeve clamp 6 in a circular array along the inner wall. The elastic positioning mechanism 5 can be squeezed into the main body of the sleeve clamp 6 after being subjected to the force along the axis of the sleeve, and the outer wall of the straight cylinder 1 is circumferentially provided with the same number of positioning grooves 54 as the elastic positioning mechanism 5. The positioning grooves 54 cooperate with the elastic positioning mechanism 5 to position the straight cylinder 1, and a flange protruding toward the axis is provided on the inner wall of the sleeve clamp 6 away from the straight cylinder 1 to limit the straight cylinder 1. Preferably, a sealing rubber gasket 61 is provided on the side of the flange in contact with the straight tube 1. The sealing rubber gasket 61 is made of a fireproof material and secures the straight tube 1 to the sleeve clamp ring 6. Preferably, the elastic positioning mechanism 5 is embedded in the block groove 51 provided on the sleeve clamp ring 6. The elastic positioning mechanism 5 is composed of a positioning block 53 and a spring 52. One end of the spring 52 is fixedly connected to the inner end surface of the block groove 51, and the other end is fixedly connected to the bottom of the positioning block 53. A portion of the positioning block 53 protrudes from the notch of the block groove 51. The portion of the positioning block 53 that protrudes from the notch of the block groove 51 can be snapped into the positioning groove 54 and can be retracted into the block groove 51.

[0030] like Figure 4 As shown, preferably, a positioning line 9 parallel to the axis direction is engraved on the outer wall of the sleeve clamp 6 corresponding to the elastic positioning mechanism 5, and a positioning line 9 parallel to the axis of the straight cylinder 1 extending from the positioning groove 54 is engraved on the straight cylinder 1 and the fireproof layer 2. The two positioning lines 9 cooperate to quickly install the straight cylinder 1 into the clamp.

[0031] When using this combined sleeve, first cover the fireproof layer 2 on the straight tube 1 and fill the seams, and then install it. After the straight tube 1 is installed, install the elastic tube. When installing the elastic tube, it is necessary to align the positioning line 9 on the outer wall of the sleeve clamp 6 with the positioning line 9 on the straight tube 1 and the fireproof layer 2. In this way, the installation can quickly align the elastic positioning mechanism 5 and the positioning groove 54. After the alignment positioning line 9 is inserted, the straight tube 1 gives the elastic positioning mechanism 5 a force along the axis of the sleeve and toward one side of the elastic tube, so that the elastic positioning mechanism 5 is retracted toward the block groove 51, and the spring 52 is compressed. Until the elastic positioning mechanism 5 is aligned with the positioning groove 54, the elastic positioning mechanism 5 pops out to clamp the straight tube 1 and the sleeve clamp 6. The elastic tube can be bent, and the tear-proof mesh 8 and the frame 7 embedded in the elastic tube can prevent the elastic tube from cracking at the corrugations due to long-term use. The frames 7 provided on both sides can enable the elastic tube to bend toward the sides without the frames 7. The elastic tube is made of fireproof material and meets the fire protection requirements. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solutions of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the utility model, and all of these should be included in the scope of the claims of the utility model.

Claims

1. A combined fireproof casing, characterized by: It comprises a straight tube (1), an elastic tube coaxially arranged with the straight tube (1), and a sleeve clamping ring (6) connecting the straight tube (1) and the elastic tube; The straight tube (1) is provided with a flexible fireproof layer (2) on the outer surface; The elastic tube is a bellows (4) made of fireproof material, a tear-resistant mesh (8) is embedded in the wall of the bellows (4), and skeletons (7) embedded in the wall are provided on both sides of the wall of the bellows (4) along the axial direction of the bellows (4); Both ends of the bellows (4) are embedded in the sleeve clamp (6). The sleeve clamp (6) is embedded with a plurality of elastic positioning mechanisms (5) protruding inwardly from the inner wall of the sleeve clamp (6) in a circular array along the inner wall. The elastic positioning mechanism (5) is squeezed into the sleeve clamp (6) body after receiving a force along the sleeve axis and toward one side of the elastic tube. The outer wall of the straight tube (1) is provided with the same number of positioning grooves (54) as the elastic positioning mechanism (5) along the circumferential direction. The positioning grooves (54) cooperate with the elastic positioning mechanism (5) to position the straight tube (1). The inner wall of the sleeve clamp (6) at one end away from the straight tube (1) is provided with a flange protruding toward the axis to limit the straight tube (1).

2. A combined fireproof casing according to claim 1, characterized in that: The elastic positioning mechanism (5) is embedded in a block groove (51) provided on the sleeve clamp ring (6). The elastic positioning mechanism (5) is composed of a positioning block (53) and a spring (52). One end of the spring (52) is fixedly connected to the inner end surface of the block groove (51), and the other end is fixedly connected to the positioning block (53). A portion of the positioning block (53) protrudes from the notch of the block groove (51). The portion of the positioning block (53) protruding from the notch of the block groove (51) can be clamped into the positioning groove (54) and can be retracted into the block groove (51).

3. The combined fireproof casing according to claim 1, characterized in that: A sealing rubber pad (61) made of fireproof material is provided on the side of the flange that contacts the straight cylinder (1).

4. The combined fireproof casing according to claim 1, characterized in that: The fireproof layer (2) is coated on the outside of the straight cylinder (1), and after the fireproof layer (2) coats the straight cylinder (1), a portion of the fireproof layer (2) overlaps with itself to form an overlapping area (3), and the overlapping area (3) is parallel to the axis of the straight cylinder (1). In the overlapping area (3), the lower edge (22) of the fireproof layer (2) stacked on top and the upper edge (21) of the fireproof layer (2) stacked below are respectively provided with adhesive layers along the axis direction of the straight cylinder (1), and the adhesive layers cooperate to fix the overlapping area (3) of the fireproof layer (2), and the fireproof layer (2) itself is adhered to the straight cylinder (1) to prevent the fireproof layer (2) from moving.

5. The combined fireproof casing according to claim 4, characterized in that: A portion of the upper edge (21) of the fireproof layer (2) stacked below in the overlapping area (3) is cut off, and a portion of the lower edge (22) of the fireproof layer (2) stacked above in the overlapping area (3) is cut off. After the lower fireproof layer (2) and the upper fireproof layer (2) are fixed together by overlapping, the thickness of the fireproof layer (2) below is equal to the thickness of the fireproof layer (2) in the non-overlapping area (3).

6. The combined fireproof casing according to claim 5, characterized in that: The overlapping area (3) is fitted by arranging Velcro on the upper edge (21) and the lower edge (22).

7. The combined fireproof casing according to claim 4, characterized in that: The gaps in the overlapping area (3) are filled with fire retardant paint to reduce the gaps.

8. The combined fireproof casing according to claim 1, characterized in that: A positioning line (9) parallel to the axis direction is engraved on the outer wall of the sleeve clamp (6) corresponding to the elastic positioning mechanism (5), and a positioning line (9) extending from the positioning groove (54) and parallel to the axis of the straight cylinder (1) is engraved on the straight cylinder (1) and the fireproof layer (2). The two positioning lines (9) cooperate to quickly install the straight cylinder (1) into the clamp.

Images