A drainage type fire-resistant trough box

Abstract

An embodiment of the present invention discloses a drainage type fire-resistant trough box, comprising a C-shaped main body mounted on a wall, and a C-shaped cover plate fixedly nested on the C-shaped main body, wherein the C-shaped main body is provided with a drainage hole that penetrates the outside world on the lower bottom surface along the gravity direction, and a baffle is provided in the C-shaped main body that can fall under the action of gravity to cover the drainage hole, and the baffles are mounted on both sides of the drainage hole by hot-melt support strips that melt when heated; the present invention uses the hot-melt support strips and baffles to allow moisture in the C-shaped main body to flow from the drainage hole to the outside world without hindrance; when a fire occurs outside the C-shaped main body, the baffle falls under the action of gravity to seal the drainage hole; when the cable in the C-shaped main body catches fire, the baffle covers the drainage hole to prevent the fire from spreading outward; the device uses the hot-melt support strips and baffles to retain the drainage function of the drainage hole while having a certain isolation ability to prevent the fire from spreading.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of cable trough boxes, and in particular to a drainage-type fire-resistant trough box. Background Art

[0002] Cable troughs are typically made of high-temperature and fire-resistant materials. As a common support and protection device for cable laying in electrical equipment power supply systems, cable troughs protect and guide the cables laid within them. However, during rainy days, rainwater can accumulate within the troughs, and soaking the cables can easily damage them, leading to safety hazards such as leakage and short circuits.

[0003] In the prior art, drainable cable troughs are often used to address this issue, such as the utility model application with application number 201720894788.4, which isolates and secures the cables with a separator cover, and then provides drainage grooves and drainage holes on both sides of the separator cover. While this solution can solve the drainage problem, its drawback is that, in the event of a fire, the fire can easily enter the cable trough through the drainage holes, causing the cables to catch fire, and in severe cases, explosion. Furthermore, if a cable fire occurs, the fire can easily spread from the drainage holes to the outside world, causing a large-scale fire outside and causing significant property damage. Summary of the Invention

[0004] To this end, an embodiment of the present invention provides a drainage-type fire-resistant trough box to solve the problem in the prior art that the provision of drainage holes causes the cables in the fire-resistant trough box to be easily burned by fire, or the cable fire causes external fire.

[0005] In order to achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0006] A drainage-type fire-resistant trough box comprises a C-shaped main body mounted on a wall, and a C-shaped cover plate fixedly nested on the C-shaped main body; the C-shaped main body is provided with a drainage hole penetrating to the outside on its lower bottom surface along the direction of gravity, and a baffle is provided inside the C-shaped main body which can fall under the action of gravity to cover the drainage hole, and the baffles are mounted on both sides of the drainage hole by hot-melt support bars that melt when heated.

[0007] As a preferred solution of the present invention, the hot melt support strip is a strip structure made of EVA hot melt adhesive material.

[0008] As a preferred solution of the present invention, the drainage hole is provided in the middle of the width direction of the lower bottom surface of the U-shaped main body.

[0009] As a preferred solution of the present invention, the mounting surface on the U-shaped main body for mounting the hot melt support strip is an inwardly concave arc surface whose height gradually decreases from the edges on both sides to the center in the width direction.

[0010] As a preferred solution of the present invention, the lower surface of the baffle is in contact with the mounting surface.

[0011] As a preferred solution of the present invention, the width of the baffle is smaller than the width of the C-shaped body.

[0012] As a preferred solution of the present invention, drainage channels are provided on both sides of the baffle, and sliding curved surfaces are provided on the outer sides of the drainage channels.

[0013] As a preferred solution of the present invention, a U-shaped groove is provided on the mounting surface, and a flip lock plate is hingedly connected to a side wall of the U-shaped groove away from the drainage hole.

[0014] As a preferred solution of the present invention, one end of the flip lock plate is placed on the mounting surface and is provided with a locking protrusion on this end, and the other end of the flip lock plate is suspended and is provided with an arc-shaped fitting end on this end surface.

[0015] As a preferred solution of the present invention, a fitting plug plate is fixedly installed on the lower bottom surface of the baffle corresponding to the U-shaped groove, and a locking groove is provided on the lower bottom surface of the baffle for engaging with the locking protrusion when rotating the flip lock plate.

[0016] As a preferred solution of the present invention, there is a gap between the fitting plug plate and the side wall of the fitting plug plate close to the flip lock plate, and the gap is equal to the width of the flip lock plate.

[0017] As a preferred solution of the present invention, a drainage hole for communicating with the drainage hole is provided at the bottom end of the U-shaped groove.

[0018] The embodiments of the present invention have the following advantages:

[0019] The present invention sets up a baffle above the drainage hole through a hot-melt support strip, so that the moisture in the C-shaped main body can flow to the outside from the drainage hole without hindrance; when a fire occurs outside the C-shaped main body and the C-shaped cover plate, the hot-melt support strip is melted by the heat, and the baffle, which has lost its support, falls under the action of gravity to seal the drainage hole; and when the cable in the C-shaped main body and the C-shaped cover plate catches fire, the baffle seals the drainage hole to prevent the fire from spreading outward; this device uses the hot-melt support strip and the baffle to retain the drainage function of the drainage hole while having a certain isolation ability to prevent the fire from spreading. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of the whole in the embodiment of the present invention;

[0022] Figure 2 It is a schematic structural diagram of the baffle and the U-shaped main body in the embodiment of the present invention;

[0023] Figure 3 It is a schematic structural diagram of the U-shaped groove in the embodiment of the present invention.

[0024] In the figure:

[0025] 1 - U-shaped main body; 2 - U-shaped cover plate; 3 - drain hole; 4 - baffle; 5 - hot-melt support bar; 6 - drainage channel; 7 - sliding surface; 8 - U-shaped groove; 9 - flipping lock plate; 10 - locking convex block; 11 - arc-shaped fitting end; 12 - fitting insertion plate; 13 - locking groove; 14 - drainage hole. Specific embodiments

[0026] To make the object, features, and advantages of the present invention more obvious and understandable, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0027] The following will further illustrate the technical solutions of the present invention with reference to the drawings and through specific embodiments.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0029] Such as Figure 1As shown, the present invention provides a drainage type fire-resistant trough box, comprising a C-shaped main body 1 mounted on a wall, and a C-shaped cover plate 2 fixedly nested on the C-shaped main body 1, the C-shaped main body 1 is provided with a drainage hole 3 that penetrates the outside world on the lower bottom surface along the gravity direction, and a baffle 4 is provided in the C-shaped main body 1 that can fall under the action of gravity to cover the drainage hole 3, and the baffle 4 is mounted on both sides of the drainage hole 3 by hot-melt support strips 5 that melt when heated.

[0030] The core point of the present invention is that the baffle 4 is erected above the drainage hole 3 by means of the hot-melt support strip 5. Since the width of the baffle 4 is smaller than the width of the C-shaped main body 1, the moisture in the C-shaped main body 1 can flow unimpeded from both sides of the baffle 4 to the lower bottom surface of the C-shaped main body 1 and be discharged through the drainage hole 3; and when a fire occurs outside the C-shaped main body 1 and the C-shaped cover plate 2, the hot-melt support strip 5 is melted by the heat, and the baffle 4, which has lost the support of the hot-melt support strip 5, falls under the action of gravity and seals the drainage hole 3; and when the cable inside the C-shaped main body 1 and the C-shaped cover plate 2 catches fire, the baffle 4 seals the drainage hole 3 to prevent the fire from spreading outward.

[0031] It should be noted that in real life, there are many possible installation directions of the C-shaped body 1, so in this solution, the baffle 4 is set on the lower bottom surface of the C-shaped body 1 in the direction of gravity so that the device is not affected by the C-shaped body 1.

[0032] The hot melt support strip 5 is a strip structure made of EVA hot melt adhesive material.

[0033] EVA hot melt adhesive is a solvent-free, water-free, 100% solid, fusible polymer. It is solid at room temperature but becomes a fluid, viscous liquid adhesive when heated and melted to a certain degree. Once melted, it appears light brown, translucent, or off-white. Generally, the melting point of EVA hot melt adhesive is around 80°C, and the flame temperature is much higher than this melting point.

[0034] Since the hot-melt support strip 5 turns into a colloid after melting, part of the colloid flows out of the drainage hole 3 and the remaining part of the colloid adheres to the contact surface between the U-shaped body 1 and the baffle 4, achieving a bonding and sealing effect.

[0035] The drainage hole 3 is provided at the middle of the lower bottom surface of the U-shaped body 1 in the width direction.

[0036] The mounting surface on the U-shaped main body 1 for mounting the hot melt support strip 5 is an inwardly concave arc surface with a height gradually decreasing from the edges on both sides to the center in the width direction.

[0037] The lower surface of the baffle 4 is in contact with the mounting surface.

[0038] The width of the baffle 4 is smaller than the width of the U-shaped body 1 .

[0039] Since the mounting surface on the U-shaped main body 1 for mounting the hot-melt support strip 5 is an inwardly concave arc surface, and the drainage hole 3 is arranged in the middle of the width direction of the inwardly concave arc surface, this can facilitate the rapid flow of moisture from the edges of both sides of the mounting surface to the middle of the width direction of the inwardly concave arc surface, that is, quickly flow to the drainage hole 3, which is conducive to the rapid discharge of moisture.

[0040] Furthermore, by making the contact surface between the baffle 4 and the U-shaped body 1 arc-shaped, the contact between the two can be made more stable and not easy to slide to the left or right. The contact area between the two can also be increased, making the sealing of the connection between the two stronger, thereby enhancing the fire prevention and isolation effects.

[0041] like Figure 2 and Figure 3 As shown, both sides of the baffle 4 are provided with drainage channels 6, and the outer side of the drainage channel 6 is provided with a sliding curved surface 7, a U-shaped groove 8 is provided on the mounting surface, and a flip lock plate 9 is hinged on the side wall of the U-shaped groove 8 away from the drainage hole 3, one end of the flip lock plate 9 is placed on the mounting surface and a locking protrusion 10 is provided on this end, and the other end of the flip lock plate 9 is suspended and provided with an arc-shaped fitting end 11 on this end surface, a fitting plug plate 12 is fixedly installed on the lower bottom surface of the baffle 4 corresponding to the U-shaped groove 8, and a locking groove 13 is provided on the lower bottom surface of the baffle 4 for engaging with the locking protrusion 10 when the flip lock plate 9 is rotated, there is a gap between the fitting plug plate 12 and the side wall of the fitting plug plate 12 close to the flip lock plate 9, and the gap is equal to the width of the flip lock plate 9, and the bottom end of the U-shaped groove 8 is provided with a drainage hole 14 for connecting to the drainage hole 3.

[0042] When the baffle 4 falls down due to the melting of the hot-melt support strip 5, the fitting plug plate 12 falls down with the baffle 4. When the fitting plug plate enters the U-shaped groove 8, the bottom end of the fitting plug block 12 squeezes the right end of the flip lock plate 9, causing the flip lock plate 9 to rotate clockwise. The angle of rotation of the flip lock plate 9 is the angle from its bottom edge to the left side wall of the U-shaped groove 8. Because the flip lock plate 9 rotates following the fitting plug block 12, when the fitting plug block 12 fits with the bottom of the U-shaped groove 8, the flip lock plate 9 fits with the side wall of the U-shaped groove 8. At this time, the locking protrusion 10 on the flip lock plate 9 is just nested in the locking groove 13 by rotation, thereby locking the fitting plug plate 12 in the U-shaped groove 8. The position of the fixing plate 4 in the U-shaped main body 1 is fixed to increase the stability of the baffle 4 cover.

[0043] The water in the U-shaped groove 8 can be guided to the drainage hole 3 for discharge through the drainage hole 14 .

[0044] The drainage channel 6 allows the baffle 4 to be nested and slide on both side walls of the C-shaped body 1 without affecting the drainage function, so as to ensure that the falling trajectory of the baffle 4 is a stable straight line. The sliding curved surface 7 can reduce the friction generated by the drainage channel 6 and the side walls of the C-shaped body 1, making the sliding speed faster and thus reducing the sliding time.

[0045] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0046] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

[0047] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A drainage type refractory trough box, characterized in that: The invention comprises a wall-mounted U-shaped main body (1) and a U-shaped cover plate (2) fixedly nested on the U-shaped main body (1); the U-shaped main body (1) is provided with a drainage hole (3) penetrating the outside world on its lower bottom surface along the gravity direction; and a baffle (4) is provided inside the U-shaped main body (1) which can fall under the action of gravity to cover the drainage hole (3); and the baffle (4) is mounted on both sides of the drainage hole (3) by means of hot-melt support strips (5) which melt when heated; The drainage hole (3) is provided in the middle of the width direction of the lower bottom surface of the U-shaped main body (1); The mounting surface on the U-shaped main body (1) for mounting the hot melt support strip (5) is an inwardly concave arc surface whose height gradually decreases from the edges on both sides to the center in the width direction; The lower surface of the baffle (4) is in contact with the mounting surface; The width of the baffle (4) is smaller than the width of the U-shaped body (1); Both sides of the baffle (4) are provided with drainage channels (6), and the outer sides of the drainage channels (6) are provided with sliding curved surfaces (7); The hot melt support strip (5) is a strip structure made of EVA hot melt adhesive material.

2. A drainage type refractory trough box according to claim 1, characterized in that: A U-shaped groove (8) is provided on the installation surface, and a flip lock plate (9) is hingedly connected to a side wall of the U-shaped groove (8) away from the drainage hole (3).

3. A drainage type fire-resistant trough box according to claim 2, characterized in that: One end of the flip lock plate (9) is placed on the mounting surface and is provided with a locking protrusion (10), and the other end of the flip lock plate (9) is suspended and is provided with an arc-shaped fitting end (11) on this end surface.

4. A drainage type fire-resistant trough box according to claim 3, characterized in that: A fitting plug plate (12) is fixedly mounted on the lower bottom surface of the baffle (4) corresponding to the U-shaped groove (8), and a locking groove (13) is provided on the lower bottom surface of the baffle (4) for engaging with the locking protrusion (10) when the flip lock plate (9) is rotated.

5. A drainage type fire-resistant trough box according to claim 4, characterized in that: There is a gap between the fitting plug plate (12) and the side wall of the fitting plug plate (12) close to the flip lock plate (9), and the gap is equal to the width of the flip lock plate (9).

6. A drainage type fire-resistant trough box according to claim 2, characterized in that: The bottom end of the U-shaped groove (8) is provided with a drainage hole (14) for communicating with the drainage hole (3).

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